CN105758029B - An intelligent constant temperature solar water heating system - Google Patents

Abstract

The present invention discloses an intelligent constant-temperature solar water heating system. By adding a retractable liner retraction device to the inner liner of the water tank, and connecting the liner retraction device and the inner liner with a pipe, a circulating pump and a solenoid valve are provided, and the system is automatically controlled by a controller to achieve automatic water level replenishment and temperature control in the water tank. This overcomes the problem of rapid temperature drops in hot water caused by water replenishment during use of solar water heaters.

Description

An intelligent constant temperature solar water heating system

technical field

The invention relates to the field of solar water heaters, in particular to an intelligent constant temperature solar water heating system.

Background technique

With the development of new energy sources, solar energy is more and more used in daily life, and solar water heaters are currently the most widely used. The solar water heater is generally divided into a photoelectric conversion part and a storage water tank. The water tank is provided with an inner tank, which can be used by mixing the inner tank with the water in the water tank.

But the existing solar water heaters have the following disadvantages: when the water in the water tank is used to a certain extent, the water pressure in the water tank will not be stable for use; If the temperature drops, and the water supply is too hasty at the same time, it will cause uneven mixing of cold and hot water, which will affect the use.

Contents of the invention

The purpose of the present invention is to provide an intelligent and constant temperature solar water heating system to overcome the problem of automatic replenishment of water by the solar water heater during bathing.

To achieve the above object, the present invention adopts the following technical solutions:

An intelligent and constant temperature solar water heating system, including a water tank and a controller, an inner tank contraction device is arranged in the water tank, and a circulation pump is arranged outside the water tank;

The inner tank shrinking device is provided with a water inlet and a water outlet, and the water inlet pipe passes through the water tank wall and is connected with the water inlet of the inner tank shrinking device;

One end of the circulation pump passes through the water tank wall through the water pipe and is connected to the water outlet of the liner shrinkage device, and the other end of the circulation pump is connected to the water inlet of the water tank through the water pipe;

The water outlet of the water tank is connected to the water mixing valve through a water pipe, and the other input end of the water mixing valve is connected to the water inlet pipe of the liner shrinkage device, and the output of the water mixing valve is the water end;

The controller has two output ends and two input ends: one input end is connected to the water level sensor, the other input end is connected to the water level sensor, the water level sensor is set in the water tank, and the water temperature sensor is set in the water tank; one output end is connected to The other output end of the pump is connected to a solenoid valve, and the solenoid valve is arranged on the pipeline of the water inlet of the shrinking device of the inner bag.

In the above technical solution, the solenoid valve is arranged on the pipeline of the water inlet of the liner shrinking device, one end of the solenoid valve is the water inlet of the liner shrinking device, the other end of the solenoid valve is the water inlet pipe, and the water inlet pipe is connected to the water inlet of the inner bag shrinkage device. Mixer valve connection.

In the above technical solution, the shrinking device for the liner is made of heat insulating material.

In the above technical solution, the heat insulating material is a water-resistant material.

In the above technical solution, the water outlet of the water tank is provided with an automatic booster pump.

In the above technical solution, the automatic booster pump is provided with a water flow sensor.

Its working principle of the present invention is divided into two parts, and a part is the function of automatic water replenishment, and a part is the function of automatic constant temperature.

Realization of automatic water replenishment function: a water level sensor is installed in the water tank. When the water in the water tank is used, the water level drops. Once the water level drops to the set value, the signal collected by the sensor is fed back to the controller; the controller sends out a control signal after receiving the signal , control the solenoid valve to open, the water in the water inlet pipe flows into the liner shrinkage device through the solenoid valve, a large amount of water inflow makes the liner shrinkage device expand, and the expansion of the liner shrinkage device will squeeze the space in the water tank, so the water tank The water level is also raised in disguise. When the water level sensor detects that the water level has returned to above the set value, the signal is fed back to the controller, and the controller also controls the solenoid valve to close at the same time to stop replenishing the inner tank shrinking device. Repeated work can keep the water level in the water tank above the set water level, so that the water pressure in the water tank is large enough to facilitate use.

Realization of automatic constant temperature function: a water temperature sensor is installed in the shrinking device of the liner. When the water temperature in the water tank is higher than the set value, the water temperature sensor feeds back the signal to the controller, and the controller sends a control command to the circulation pump, and the circulation pump starts Work pumps the water in the liner shrinking device into the water tank, so that the cold water in the liner shrinking device flows into the water tank to mix with the hot water in the water tank, and at the same time returns the hot water in the water tank to the liner shrinking device until When the water temperature sensor detects that the water temperature in the water tank returns to below the set value, the circulating pump stops working. The repeated control realizes that the hot water in the liner shrinking device can always be kept in the same temperature range.

In summary, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the present invention are: adopt relatively simple structure and circuit design, and simultaneously adopt the excellent water-resistant material of "heat insulation performance" to make the "inner liner contraction device". The hot water temperature drops rapidly due to water replenishment during the use of the water heater.

Description of drawings

The invention will be illustrated by way of example with reference to the accompanying drawings, in which:

Fig. 1 is a schematic diagram of the structure principle of the present invention;

Among them: 1 is the water tank, 2 is the water level sensor, 3 is the controller, 4 is the water temperature sensor, 5 is the solenoid valve, 6 is the shrinking device of the inner tank, 7 is the water, 8 is the circulation pump, 9 is the outlet pipe, 10 is the inlet Water pipe, 11 is mixing valve.

detailed description

As shown in Fig. 1, the schematic diagram of the structure principle of the present invention is mainly composed of a water tank, an inner tank contraction device, a controller, a circulation pump, and a solenoid valve. The inner space of the water tank is the inner bladder of the water tank, and the inner bladder shrinkage device is arranged in the water tank. The liner shrinking device is made of heat-insulating and water-resistant soft material, and the inner liner shrinking device can be inflated by adding water and inflating it. The shrinking device of the liner is provided with a water outlet and a water inlet, and the water outlet and the water inlet are respectively connected to the outside through a pipe.

The water tank is also provided with a water outlet and a water inlet. The water outlet of the liner shrinkage device is connected to the water inlet of the water tank through a pipeline. At the same time, a circulation pump is set on the pipeline to cut off the pipeline. By controlling the circulation pump The work makes the pipe conduction.

The water inlet pipe of the liner shrinking device is connected with the external water inlet pipe, and at the same time, the water inlet pipe is connected with the water outlet of the water tank; a solenoid valve is arranged outside the water inlet of the liner shrinking device to realize the water inlet pipe. Cut off, by controlling the switch of the solenoid valve to realize the conduction between the water inlet pipe and the shrinking device of the inner tank; a water mixing valve is set between the water inlet pipe and the water outlet of the water tank, and the water outlet pipe is between the water mixing valve and the water outlet of the water tank, and the water is mixed The output end of the valve is the water end.

The controller in this implementation uses 220VC AC power supply. When the water level sensor senses that the water level of the water tank is lower than 20% of the set value, the controller sends a 12V/0.5A DC voltage to the solenoid valve to open the solenoid valve, so that the The water in the water pipe quickly enters the inner tank contraction device under the action of water pressure. Because the liner shrinking device is filled with a large amount of water, the inner liner shrinking device expands rapidly, and the expanded liner shrinking device compresses the space in the water tank, and the water level in the water tank rises because of the reduced space, so When the water level sensor senses that the water level in the water tank is higher than 80% of the set value, the controller controls the solenoid valve to close to stop water replenishment.

When the temperature of the water in the water tank rises rapidly during the process of solar photothermal conversion, once the water temperature sensor in the water tank detects that the water temperature is higher than 50°C, the controller will send a set of AC 220V voltage to the circulation pump, so that the circulation pump will discharge the inner tank. The cold water in the shrinking device is pumped into the water tank to realize the mixing of cold water and hot water to reduce the water temperature in the water tank.

The control of water temperature and water level is carried out synchronously. When all the water in the shrinking device of the inner tank is pumped into the water tank by the circulating pump, and the water in the tank still fails to drop to the set 40°C, the complete shrinkage of the shrinking device of the inner tank will cause the water level to drop, so the solenoid valve will also simultaneously Open it, replenish water to the shrinking device of the inner tank, and at the same time, the circulation pump reversely pumps the hot water in the water tank into the shrinking device of the inner tank, and after multi-layer circulation work, the water temperature in the water tank can be kept at 40°C, and at the same time the water in the water tank The water level can be kept above 80%.

The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, and any new method or process step or any new combination disclosed.

Claims (5)

1. a kind of solar water heating system of intelligent constant-temperature, including water tank and controller, it is characterised in that be provided with water tank Inner bag constriction device, water tank are provided with pump outside；

The inner bag constriction device is provided with a water inlet and delivery port, and water inlet pipe passes through water tank wall and inner bag constriction device Water inlet connects；

One end of pump is connected by water pipe through water tank wall with the delivery port of inner bag constriction device, the other end of pump by water pipe with The water inlet connection of water tank；

The delivery port of water tank is connected to water mixing valve, and the water inlet of another input of water mixing valve and inner bag constriction device by water pipe Pipe connects, and the output of water mixing valve is to use water end (W.E.)；

The controller includes two output ends and two inputs：One input connection level sensor, another input End connection cooling-water temperature sensor, the level sensor, cooling-water temperature sensor are arranged in water tank；It is one output end connection pump, another Individual output end connects magnetic valve, and the magnetic valve is arranged on the pipeline of inner bag constriction device water inlet；

The magnetic valve is arranged on the pipeline of inner bag constriction device water inlet, one end entering for inner bag constriction device of magnetic valve The mouth of a river, the other end of magnetic valve is inlet channel, and inlet channel is connected with water mixing valve；

The inner bag constriction device is made of heat-barrier material.

A kind of 2. solar water heating system of intelligent constant-temperature according to claim 1, it is characterised in that the heat-barrier material For water-resistant material.

3. the solar water heating system of a kind of intelligent constant-temperature according to claim 1, it is characterised in that the water tank goes out The mouth of a river is provided with automatic pressure pump.

A kind of 4. solar water heating system of intelligent constant-temperature according to claim 3, it is characterised in that the Automatic-boosting Current inductor is provided with pump.

5. the solar water heating system of a kind of intelligent constant-temperature according to claim 1, it is characterised in that the pump is two-way The circulating pump of work.