CN111947307B - Electric water heater for monitoring temperature of cloud platform - Google Patents
Electric water heater for monitoring temperature of cloud platform Download PDFInfo
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- CN111947307B CN111947307B CN201910403910.7A CN201910403910A CN111947307B CN 111947307 B CN111947307 B CN 111947307B CN 201910403910 A CN201910403910 A CN 201910403910A CN 111947307 B CN111947307 B CN 111947307B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000012544 monitoring process Methods 0.000 title claims abstract description 4
- 238000005485 electric heating Methods 0.000 claims abstract description 68
- 239000012530 fluid Substances 0.000 claims description 54
- 238000010438 heat treatment Methods 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 30
- 239000003814 drug Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 23
- 238000012546 transfer Methods 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000000889 atomisation Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000008236 heating water Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002663 nebulization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
- F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G7/00—Cleaning by vibration or pressure waves
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides an electric water heater for monitoring the temperature of a cloud platform, which comprises a controller and an electric heating device, wherein a temperature sensing element is arranged in the electric heating device and used for detecting the temperature in the electric heating device, the temperature sensing element is in data connection with a PLC (programmable logic controller), the PLC is connected with the cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, a client is connected with the cloud platform, the temperature data collected by the cloud collector informs the client and is stored in the cloud storage, the client can look up the temperature data in the cloud storage, and the cloud processor sends an instruction to the PLC according to the temperature data stored in the cloud storage and the requirement of a client to control the electric heating device to heat. The invention provides a novel control method of a water heater capable of remotely and intelligently controlling the temperature and the vibration at a high speed, which can improve the remote intelligent control and the operation convenience of a system.
Description
Technical Field
The invention relates to a water heater, in particular to an intermittent vibration descaling electric water heater.
Background
The water heater is an essential household appliance in the family life at present. At present, an electric water heater is generally adopted and is used for heating. In applicant's prior application, a new coil type electric heating coil, such as CN106123306A, was developed and studied to vibrate the elastic tube bundle due to the expansion of the fluid therein caused by heating, thereby achieving heating and descaling effects.
However, in applications where it is found that continuous heating of the electric heater results in fluid stability of the internal electric heating means, i.e. the fluid is not flowing or is flowing very little, or the flow is stable, resulting in a much reduced vibrational performance of the coil, thereby affecting the efficiency of descaling and heating of the coil, it has been found in practice that adjusting the vibration of the tube bundle by periodic variations in the fixity results in hysteresis and in too long or too short a cycle. Therefore, the invention improves the previous application and intelligently controls the vibration, so that the fluid in the fluid can realize frequent vibration, and good descaling and heating effects can be realized.
However, in practice, it is found that with the continuous progress of technology and the comfort of life, the requirement for remote control is higher, and the vibration descaling developed at present cannot realize remote control, so that the applicant carries out further research and development to realize remote intelligent control of the vibration descaling water heater.
Disclosure of Invention
Aiming at the defects in the technology researched in the prior art, the invention provides a novel electric heating water heater capable of remotely and intelligently controlling vibration and a control method thereof. The remote intelligent control and operation convenience of the system can be improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the electric water heater comprises a controller and an electric heating device, wherein a temperature sensing element is arranged in the electric heating device and used for detecting the temperature in the electric heating device, the temperature sensing element is in data connection with a PLC (programmable logic controller), the PLC is connected with a cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, a client is connected with the cloud platform, the temperature data collected by the cloud collector informs the client and is stored in the cloud storage, the client can look up the temperature data in the cloud storage, and the cloud processor sends an instruction to the PLC according to the temperature data stored in the cloud storage and the requirement of the client to control the electric heating device to heat.
Preferably, the electric heating device is arranged in a water tank, the water tank comprises a water inlet pipe and a water outlet pipe, the electric heating device comprises a first pipe box, a second pipe box and a coil pipe, the coil pipe is communicated with the first pipe box and the second pipe box to form closed circulation of heating fluid, and the electric heater is arranged in the first pipe box; filling phase-change fluid in the first channel; the number of the coil pipes is one or more, each coil pipe comprises a plurality of arc-shaped pipe bundles, the central lines of the arc-shaped pipe bundles are arcs taking the first pipe box as a concentric circle, and the end parts of the adjacent pipe bundles are communicated, so that the end parts of the pipe bundles form free ends of the pipe bundles; the electric heater is controlled by temperature to heat so as to achieve frequent vibration of the electric heating device.
Preferably, the user can select an automatic control or manual control working mode at the client, and the cloud processor controls the working mode selected by the client to send an instruction to the PLC controller so as to control the electric heating device to heat.
Preferably, in a manual control working mode, a user obtains temperature data according to a client, power of the electric heater is manually input at the client, and the cloud processor sends an instruction to enable the PLC to control the electric heater to operate according to the power input by the client.
Preferably, in the automatic control operation mode, the cloud processor issues an instruction to cause the PLC controller to automatically control the power of the electric heater according to the measured temperature.
Preferably, in the automatic control operation mode, the controller controls the electric heater to stop heating if the temperature detected by the temperature sensing element is higher than a certain value, and controls the electric heater to heat if the temperature detected by the temperature sensing element is lower than a certain value.
Preferably, the temperature sensing element is disposed at an upper end inside the first header and/or the second header.
Preferably, the temperature sensing member is disposed at an upper end inside the first and second header tanks.
Preferably, the controller controls the electric heater to stop heating if the temperature detected by the temperature sensing element is higher than a certain value, and controls the electric heater to heat if the temperature detected by the temperature sensing element is lower than a certain value.
The invention has the following advantages:
1. the invention provides a novel control method of a water heater capable of remotely and intelligently controlling the temperature and the vibration at a high speed, which can improve the remote intelligent control and the operation convenience of a system.
2. The electric heating device can judge whether the internal temperature reaches a stable state or not according to the internal temperature, and then intelligently controls the heating of the electric heater according to the internal temperature, so that the internal fluid can realize frequent vibration, and good descaling and heating effects are realized.
3. The invention designs a layout of an electric heating device with a novel structure in a box body, and can further improve the heating efficiency.
4. The invention optimizes the optimal relationship of the parameters of the coil pipe through a large amount of experiments and numerical simulation, thereby realizing the optimal heating efficiency.
Description of the drawings:
fig. 1 is a top view of an electric heating apparatus of the present invention.
Fig. 2 is a front view of the electric heating apparatus.
Fig. 3 is a layout diagram of an electric heating device arranged in a circular water tank.
Fig. 4 is a schematic diagram of the coil arrangement.
Fig. 5 is a schematic view of the structure of the water tank.
Fig. 6 is a control structure diagram.
Fig. 7 is a control flow diagram.
In the figure: 1. coil pipe, 2, first pipe box, 3, free end, 4, free end, 5, water inlet pipe, 6, water outlet pipe, 7, free end, 8, second pipe box, 9, connecting point, 10, electric heating device, 11, water tank, 12 pipe bundle, 13 electric heater
Detailed Description
An electric water heater comprises an electric heating device 10 and a water tank 11, wherein the electric heating device 10 is arranged in the water tank 11, and the water tank 11 comprises a water inlet pipe 5 and a water outlet pipe 6.
Fig. 1 shows a top view of an electric heating apparatus 10, as shown in fig. 1, the electric heating apparatus 10 includes a first pipe box 2, a second pipe box 8 and a coil 1, the coil 1 is communicated with the first pipe box 2 and the second pipe box 8, a fluid circulates in the first pipe box 2, the second pipe box 8 and the coil 1 in a closed manner, an electric heater 13 is disposed in the electric heating apparatus 10, and the electric heater 13 is used for heating the fluid in the electric heating apparatus 10 and then heating water in a water tank by the heated fluid.
As shown in fig. 1-2, an electric heater 13 is disposed in the first header tank 2; the first channel box 2 is filled with phase-change fluid; the number of the coil pipes 1 is one or more, each coil pipe 1 comprises a plurality of circular arc-shaped pipe bundles 12, the central lines of the circular arc-shaped pipe bundles 12 are circular arcs taking the first pipe box 2 as a concentric circle, the end parts of the adjacent pipe bundles 12 are communicated, and fluid forms serial flow between the first pipe box 2 and the second pipe box 8, so that the end parts of the pipe bundles form free ends 3 and 4 of the pipe bundles; the fluid is phase-change fluid or vapor-liquid phase-change liquid, the electric heating device is in data connection with the controller, and the controller controls the heating power of the electric heating device to periodically change along with the change of time.
Preferably, the first and second headers 2 and 8 are provided along a height direction.
It has been found in research and practice that continuous power-stable heating of the electric heater results in a stable fluid formation of the internal electric heating means, i.e. the fluid is not flowing or has little fluidity, or the flow is stable, resulting in a greatly reduced vibrational performance of the coil 1, thereby affecting the efficiency of descaling and heating of the coil 1. There is therefore a need for an improvement to the electrical heating coil described above as follows.
It has been found in research and practice that continuous power-stable heating of the electric heater results in a stable fluid formation of the internal electric heating means, i.e. the fluid is not flowing or has little fluidity, or the flow is stable, resulting in a greatly reduced vibrational performance of the coil 1, thereby affecting the efficiency of descaling and heating of the coil 1. There is therefore a need for an improvement to the electrical heating coil described above as follows.
In the prior application of the applicant, a periodic heating mode is provided, and the vibration of the coil is continuously promoted by the periodic heating mode, so that the heating efficiency and the descaling effect are improved. However, adjusting the vibration of the tube bundle with a fixed periodic variation can lead to hysteresis and too long or too short a period. Therefore, the invention improves the previous application and intelligently controls the vibration, so that the fluid in the fluid can realize frequent vibration, and good descaling and heating effects can be realized.
Aiming at the defects in the technology researched in the prior art, the invention provides a novel electric heating water heater capable of intelligently controlling vibration. This water heater can improve heating efficiency to realize fine scale removal and heating effect.
Self-regulation vibration based on pressure
Preferably, a pressure sensing element is arranged in the electric heating device and used for detecting the pressure in the electric heating device, the pressure sensing element is in data connection with a PLC (programmable logic controller), the PLC is connected with a cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, a client is connected with the cloud platform, the pressure data collected by the cloud collector informs the client and is stored in the cloud storage, and the client can look up the pressure data in the cloud storage.
Preferably, the user can select an automatic control or manual control working mode at the client, and the cloud processor controls the working mode selected by the client to send an instruction to the PLC controller so as to control the electric heating device to heat.
Preferably, the client is a mobile phone, and the mobile phone installs an APP program.
Preferably, in a manual control working mode, a user obtains pressure data according to a client, power of the electric heater is manually input at the client, and the cloud processor sends an instruction to enable the PLC to control the electric heater to operate according to the power input by the client.
Preferably, in the automatic control operation mode, the cloud processor issues an instruction to cause the PLC controller to automatically control the power of the electric heater according to the measured pressure.
Preferably, in the automatic control operation mode, the controller controls the electric heater to stop heating if the pressure detected by the pressure sensing element is higher than a certain value, and controls the electric heater to heat if the pressure detected by the pressure sensing element is lower than a certain value.
Through the pressure that pressure sensing element detected, can satisfy under certain pressure condition, the evaporation of inside fluid has basically reached saturation, and the volume of inside fluid also basically changes little, and under this kind of condition, inside fluid is relatively stable, and the tube bank vibratility at this moment worsens, therefore needs to adjust, makes it vibrate to stop heating. So that the fluid undergoes volume reduction to thereby realize vibration. When the pressure is reduced to a certain degree, the internal fluid starts to enter a stable state again, and at the moment, the fluid needs to be heated so as to evaporate and expand again, so that the electric heater needs to be started for heating.
Preferably, the pressure sensing element is arranged within the first header tank 2 and/or the second header tank 8.
Preferably, the pressure sensing elements are disposed within the first and second header tanks 2 and 8. The average of the pressures of the two headers can be selected as regulating data.
Preferably, the pressure sensing element is disposed at the free end. Through setting up at the free end, can perceive the pressure variation of free end to realize better control and regulation.
Independently adjusting vibration based on temperature
Preferably, a temperature sensing element is arranged in the electric heating device and used for detecting the temperature in the electric heating device, the temperature sensing element is in data connection with the PLC, the PLC is connected with the cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, the client is connected with the cloud platform, the temperature data collected by the cloud collector informs the client and is stored in the cloud storage, the client can look up the temperature data in the cloud storage, and the cloud processor sends an instruction to the PLC according to the temperature data stored in the cloud storage and the requirement of the client to control the electric heating device to heat.
Preferably, the user can select an automatic control or manual control working mode at the client, and the cloud processor controls the working mode selected by the client to send an instruction to the PLC controller so as to control the electric heating device to heat.
Preferably, the client is a mobile phone, and the mobile phone installs an APP program.
Preferably, in a manual control working mode, a user obtains temperature data according to a client, power of the electric heater is manually input at the client, and the cloud processor sends an instruction to enable the PLC to control the electric heater to operate according to the power input by the client.
Preferably, in the automatic control operation mode, the cloud processor issues an instruction to cause the PLC controller to automatically control the power of the electric heater according to the measured temperature.
Preferably, in the automatic control operation mode, the controller controls the electric heater to stop heating if the temperature detected by the temperature sensing element is higher than a certain value, and controls the electric heater to heat if the temperature detected by the temperature sensing element is lower than a certain value.
The temperature detected by the temperature sensing element can basically reach saturation when the temperature meets a certain temperature, and the volume of the internal fluid is not changed greatly basically. So that the fluid undergoes volume reduction to thereby realize vibration. When the temperature is reduced to a certain degree, the internal fluid starts to enter a stable state again, and the fluid needs to be heated to evaporate and expand again, so that the electric heater needs to be started for heating.
Preferably, the temperature sensing element is disposed at an upper end inside the first header and/or the second header.
Preferably, the temperature sensing element is disposed at an upper end inside the first and second header tanks.
Preferably, the temperature sensing element is disposed at the free end. Through setting up at the free end, can perceive the temperature variation of free end to realize better control and regulation.
Thirdly, automatically adjusting vibration based on liquid level
Preferably, a liquid level sensing element is arranged inside the first tube box and used for detecting the liquid level of fluid in the first tube box, the liquid level sensing element is in data connection with a PLC (programmable logic controller), the PLC is connected with a cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, the client is connected with the cloud platform, the liquid level data collected by the cloud collector informs the client and is stored in the cloud storage, the client can look up the liquid level data in the cloud storage, the cloud processor sends an instruction to the PLC according to the liquid level data stored in the cloud storage and the requirement of the client, and the electric heating device is controlled to heat.
Preferably, the user can select an automatic control or manual control working mode at the client, and the cloud processor controls the working mode selected by the client to send an instruction to the PLC controller so as to control the electric heating device to heat.
Preferably, the client is a mobile phone, and the mobile phone installs an APP program.
Preferably, in a manual control working mode, a user obtains liquid level data according to a client, the power of the electric heater is manually input at the client, and the cloud processor sends an instruction to enable the PLC to control the electric heater to operate according to the power input by the client.
Preferably, in the automatic control operation mode, the cloud processor issues an instruction to cause the PLC controller to automatically control the power of the electric heater according to the measured liquid level.
Preferably, in the automatic control operation mode, if the liquid level detected by the liquid level sensing element is lower than a certain value, the controller controls the electric heater to stop heating. The liquid level detected by the liquid level sensing element is higher than a certain value, and the controller controls the electric heater to heat.
The liquid level detected by the liquid level sensing element can basically reach saturation of evaporation of the internal fluid and basically does not change much in volume of the internal fluid under the condition of meeting a certain liquid level (such as the lowest limit). So that the fluid undergoes volume reduction to thereby realize vibration. When the liquid level rises to a certain degree, the internal fluid starts to enter a stable state again, and at the moment, the fluid needs to be heated so as to evaporate and expand again, so that the electric heater needs to be started for heating.
Fourthly, automatically adjusting vibration based on speed
Preferably, a speed sensing element is arranged inside the free end of the tube bundle and used for detecting the flow velocity of fluid in the free end of the tube bundle, the speed sensing element is in data connection with a PLC (programmable logic controller), the PLC is connected with a cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, the client is connected with the cloud platform, the speed data collected by the cloud collector informs the client and is stored in the cloud storage, the client can look up the speed data in the cloud storage, and the cloud processor sends an instruction to the PLC according to the speed data stored in the cloud storage and the requirement of the client to control the electric heating device to heat.
Preferably, the user can select an automatic control or manual control working mode at the client, and the cloud processor controls the working mode selected by the client to send an instruction to the PLC controller so as to control the electric heating device to heat.
Preferably, the client is a mobile phone, and the mobile phone installs an APP program.
Preferably, in the manual control working mode, the user obtains the speed data according to the client, the power of the electric heater is manually input at the client, and the cloud processor sends out an instruction to enable the PLC to control the electric heater to operate according to the power input by the client.
Preferably, in the automatic control operation mode, the cloud processor issues an instruction to cause the PLC controller to automatically control the power of the electric heater according to the measured speed.
Preferably, in the automatic control operation mode, the controller controls the electric heater to stop heating if the speed sensed by the speed sensing element is higher than a certain value. The speed detected by the speed sensing element is lower than a certain value, and the controller controls the electric heater to heat.
The speed detected by the speed sensor element can substantially saturate the evaporation of the internal fluid to form a stable flow and the speed of the internal fluid does not substantially change when a certain speed (for example, the highest upper limit) is satisfied. So that the fluid undergoes volume reduction to thereby realize vibration. When the speed drops to a certain degree, the internal fluid starts to enter a stable state again, and at the moment, the fluid needs to be heated so as to evaporate and expand again, so that the electric heater needs to be started for heating.
Alternatively, the water tank 11 is provided with a medicine, the medicine is soaked in water, and when the water tank is used, the water is heated in the tank body through the heat pipe, and the medicine is heated through the water, so that the liquid medicine is generated in the tank body. The water heater is a liquid medicine fumigation-washing water heater.
As another option, the water heater still includes liquid medicine atomization case, the liquid medicine atomization case passes through pipeline and water tank intercommunication, set up the atomizer in the liquid medicine atomization case, the setting of export of atomizing is on liquid medicine atomization case upper portion.
The generated liquid medicine enters the liquid medicine atomization box through a pipeline, is atomized in the liquid medicine atomization box and is discharged through an atomization outlet. The nebulization outlet can be discharged directly against the patient's sick site for treatment.
Preferably, the electric heater is arranged in a plurality of sections along the height direction, each section is independently controlled, and the electric heater is sequentially started from the lower end along the height direction in the starting process along with the change of time until all the sections are started, and then is sequentially closed from the upper end in the following half period T/2 until the period is finished, and all the sections are closed.
That is, assuming that the electric heater has n segments, one segment is started from the lower end until all segments are started.
Preferably, the heating power is the same for each section.
The electric heater is gradually started from the lower part upwards, so that the fluid at the lower part is fully heated, a good natural convection is formed, the flow of the fluid is further promoted, and the elastic vibration effect is increased. Through the change of the heating power with time variability, the fluid can be frequently evaporated, expanded and contracted in the elastic tube bundle, so that the vibration of the elastic tube bundle is continuously driven, and the heating efficiency and the descaling operation can be further realized.
Preferably, the pipe diameter of the first pipe box 2 is smaller than that of the second pipe box 8, and the pipe diameter of the first pipe box 2 is 0.5-0.8 times of that of the second pipe box 8. Through the pipe diameter change of first pipe case and second pipe case, can guarantee that the fluid carries out the phase transition and in the internal time of first box short, get into the coil pipe fast, fully get into the heat transfer of second box.
Preferably, the connection position 9 of the coil pipe at the first header is lower than the connection position of the second header and the coil pipe. This ensures that steam can rapidly enter the second header upwards.
Preferably, the first and second headers are provided with return lines at their bottoms to ensure that condensed fluid in the second header can enter the first line.
Preferably, the first and second headers are arranged in a height direction, the coil pipe is provided in plural numbers in the height direction of the first header, and a pipe diameter of the coil pipe is gradually reduced from top to bottom.
Preferably, the pipe diameter of the coil pipe is gradually decreased and gradually increased along the direction from the top to the bottom of the first pipe box.
The pipe diameter range through the coil pipe increases, can guarantee that more steam passes through upper portion and gets into the second box, guarantees that the distribution of steam is even in all coil pipes, further reinforces the heat transfer effect for whole vibration effect is even, and the heat transfer effect increases, further improves heat transfer effect and scale removal effect. Experiments show that better heat exchange effect and descaling effect can be achieved by adopting the structural design.
Preferably, the plurality of coils are arranged along the height direction of the first tube box, and the distance between the adjacent coils is increased from the top to the bottom.
Preferably, the distance between the coils increases along the height direction of the first header.
The interval range through the coil pipe increases, can guarantee that more steam passes through upper portion and gets into the second box, guarantees that the distribution of steam is even in all coil pipes, further reinforces the heat transfer effect for whole vibration effect is even, and the heat transfer effect increases, further improves heat transfer effect and scale removal effect. Experiments show that better heat exchange effect and descaling effect can be achieved by adopting the structural design.
Preferably, as shown in fig. 5, the water tank is a water tank having a circular cross section, and a plurality of electric heating devices are disposed in the water tank.
Preferably, as shown in fig. 5, a plurality of electric heaters are disposed in the water tank, one of which is disposed at the center of the water tank to become a central electric heater, and the others are distributed around the center of the water tank to become peripheral electric heaters. Through such structural design, can be so that the interior fluid of water tank fully reaches the vibration purpose, improve the heat transfer effect.
Preferably, the heating power of the single peripheral electric heating means is smaller than the heating power of the central electric heating means. Through the design, the center reaches higher vibration frequency to form a central vibration source, so that the periphery is influenced, and better heat transfer enhancement and descaling effects are achieved.
Preferably, on the same horizontal heat exchange section, the fluid needs to achieve uniform vibration, and uneven heat exchange distribution is avoided. It is therefore necessary to distribute the amount of heating power among the different electric heating devices reasonably. Experiments show that the heating power ratio of the central electric heating device to the peripheral tube bundle electric heating device is related to two key factors, wherein one of the two key factors is the distance between the peripheral electric heating device and the center of the water tank (namely the distance between the circle center of the peripheral electric heating device and the circle center of the central electric heating device) and the diameter of the water tank. Therefore, the invention optimizes the optimal proportional distribution of the pulsating flow according to a large number of numerical simulations and experiments.
Preferably, the radius of the inner wall of the water tank is B, the circle center of the central electric heating device is arranged at the circle center of the circular cross section of the water tank, the distance from the circle center of the peripheral electric heating device to the circle center of the circular cross section of the water tank is S, the circle centers of the adjacent peripheral electric heating devices are respectively connected with the circle center of the circular cross section, an included angle formed by the two connecting lines is a, the heating power of the peripheral electric heating device is W2, and the heating power of a single central electric heating device is W1, so that the following requirements are met:
W1/W2 ═ a-B ═ Ln (B/S); ln is a logarithmic function;
a, b are coefficients, where 1.855< a <1.865,0.600< b < 0.610;
1.25<B/S<2.1；
1.4<W1/W2<1.8。
wherein 35 ° < a <80 °.
Preferably, the number of the four-side distribution is 4-5.
Preferably, B is 1600-2400 mm, preferably 2000 mm; s is 1200-2000 mm, preferably 1700 mm; the diameter of the heat exchange tube is 12-20 mm, preferably 16 mm; the outermost diameter of the pulsating coil is 300-560 mm, preferably 400 mm. The diameter of the riser is 100-116 mm, preferably 108 mm, the height of the riser is 1.8-2.2 m, preferably 2 m, and the spacing between adjacent pulse tubes is 65-100 mm. Preferably around 80 mm.
The total heating power is preferably 4000-10000W, more preferably 5500W.
More preferably, a is 0.18606 and b is 0.6041.
Preferably, the box body has a circular cross section, and is provided with a plurality of electric heating devices, wherein one electric heating device is arranged at the center of the circular cross section and the other electric heating devices are distributed around the center of the circular cross section.
The coils 1 are in one or more groups, each group of coils 1 comprises a plurality of circular arc-shaped tube bundles 12, the central lines of the circular arc-shaped tube bundles 12 are circular arcs of concentric circles, and the ends of the adjacent tube bundles 12 are communicated, so that the ends of the coils 1 form tube bundle free ends 3, 4, such as the free ends 3, 4 in fig. 2.
Preferably, the heating fluid is a vapor-liquid phase-change fluid.
Preferably, the first header 2, the second header 8, and the coil 1 are all of a circular tube structure.
Preferably, the tube bundle of the coil 1 is an elastic tube bundle.
The heat exchange coefficient can be further improved by arranging the tube bundle of the coil 1 with an elastic tube bundle.
Preferably, the concentric circles are circles centered on the center of the first header 2. I.e. the tube bundle 12 of the coil 1 is arranged around the centre line of the first tube box 2.
As shown in fig. 4, the tube bundle 12 is not a complete circle, but rather leaves a mouth, thereby forming the free end of the tube bundle. The angle of the arc of the mouth part is 65-85 degrees, namely the sum of included angles b and c in figure 5 is 65-85 degrees.
Preferably, the ends of the tube bundle on the same side are aligned in the same plane, with the extension of the ends (or the plane in which the ends lie) passing through the median line of the first tube box 2.
Further preferably, the electric heater 13 is an electric heating rod.
Preferably, the first end of the inner tube bundle of the coil 1 is connected to the first tube box 2, the second end is connected to one end of the adjacent outer tube bundle, one end of the outermost tube bundle of the coil 1 is connected to the second tube box 8, and the ends of the adjacent tube bundles are connected to form a serial structure.
The plane in which the first end is located forms an angle c of 40-50 degrees with the plane in which the centre lines of the first and second headers 2, 8 are located.
The plane of the second end forms an angle b of 25-35 degrees with the plane of the centre lines of the first and second headers 2, 8.
Through the design of the preferable included angle, the vibration of the free end is optimal, and therefore the heating efficiency is optimal.
As shown in fig. 4, there are 4 tube bundles of coil 1, with tube bundles A, B, C, D in communication. Of course, the number is not limited to four, and a plurality of the connecting structures are the same as that in fig. 4.
The number of the coil pipes 1 is multiple, and the plurality of coil pipes 1 are respectively and independently connected with the first pipe box 2 and the second pipe box 8, that is, the plurality of coil pipes 1 are in a parallel structure.
Although the present invention has been described with reference to the preferred embodiments, it is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. An electric water heater for monitoring the temperature of a cloud platform comprises a PLC (programmable logic controller) and an electric heating device, wherein a temperature sensing element is arranged in the electric heating device and used for detecting the temperature in the electric heating device, the temperature sensing element is in data connection with the PLC, the PLC is connected with the cloud platform, the cloud platform comprises a cloud processor, a cloud storage and a cloud collector, a client is connected with the cloud platform, the temperature data collected by the cloud collector informs the client and is stored in the cloud storage, the client can look up the temperature data in the cloud storage, and the cloud processor sends an instruction to the PLC according to the temperature data stored in the cloud storage and the requirement of a client to control the electric heating device to heat;
the electric heating device is arranged in a water tank, the water tank comprises a water inlet pipe and a water outlet pipe, the electric heating device comprises a first pipe box, a second pipe box and a coil pipe, the coil pipe is communicated with the first pipe box and the second pipe box to form closed circulation of heating fluid, and the electric heater is arranged in the first pipe box; filling phase-change fluid in the first channel; the number of the coil pipes is one or more, each coil pipe comprises a plurality of arc-shaped pipe bundles, the central lines of the arc-shaped pipe bundles are arcs taking the first pipe box as a concentric circle, and the end parts of the adjacent pipe bundles are communicated, so that the end parts of the pipe bundles form free ends of the pipe bundles; the temperature sensing element is arranged at the upper end in the first channel box and/or the second channel box; the cloud processor controls the working mode selected by the customer to send an instruction to the PLC controller so as to control the electric heating device to heat; in an automatic control working mode, the cloud processor sends out an instruction to enable the PLC controller to automatically control the power of the electric heater according to the measured temperature; in the automatic control working mode, the temperature detected by the temperature sensing element is higher than a certain value, the controller controls the electric heater to stop heating, and if the temperature detected by the temperature sensing element is lower than the certain value, the controller controls the electric heater to heat.
2. The electric water heater of claim 1, wherein in the manually controlled mode of operation, a user obtains temperature data from the client, manually inputs power to the electric heater at the client, and the cloud processor issues instructions to cause the PLC controller to control operation of the electric heater according to the power input at the client.
3. The electric water heater of claim 1, wherein the tank contains a medicament, the medicament being immersed in water, and in use, the water is heated in the tank by the heat pipe, and the medicament is heated by the water, thereby producing a liquid medicament in the tank.
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| EP2499436B1 (en) * | 2009-11-09 | 2016-04-13 | DBK David + Baader GmbH | Electric heater |
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| US5256857A (en) * | 1990-08-22 | 1993-10-26 | Texas Instruments Incorporated | Finned PTC air heater assembly for heating an automotive passenger compartment |
| JPH06123498A (en) * | 1990-08-22 | 1994-05-06 | Texas Instr Inc <Ti> | Heater |
| CN106016708A (en) * | 2016-07-25 | 2016-10-12 | 冯大成 | Electric water heater using mobile phone application for temperature control |
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