TWI628381B - Closed reinforcement structure of solenoid valve - Google Patents

Abstract

The present invention is directed to a close-up reinforcing structure of a solenoid valve, which is provided with at least one permanent magnet on one side of at least one fluid input end of the internal chamber of the solenoid valve, and is elastically deformed by at least one elastic member to make at least one movement The iron core abuts the fluid input end, transmits the magnetic attraction between the permanent magnet and the moving iron core, and the elastic force imparted by the elastic element, and doubles the adhesion between the fluid input end and the moving iron core. In addition, by the electromagnetic effect generated by starting the solenoid valve, the magnetic relationship between the permanent magnet, the moving iron core and the at least one fixed iron core can be utilized to enhance the force for urging the moving iron core and the fixed iron core.

Description

Closed reinforcement structure of solenoid valve

The invention relates to an adhesion strengthening structure of a solenoid valve, particularly a structure that strengthens the adhesion of a fluid input end of a blocking solenoid valve.

The solenoid valve is used as a valve structure. It has been widely used in industrial control of production line processes, or its traces can be seen in product portfolios in various fields. As the technology matures, it has become a Indispensable essential components.

One of the application types of the solenoid valve is used as a basic component to control the fluid path. By operating the solenoid valve to turn on and off the power, the flow rate and direction of the device fluid connected to the solenoid valve are determined Even the flow rate can be switched on and off according to the user's parameter settings.

Please refer to the first figure, which is a schematic cross-sectional view of a conventional solenoid valve structure. As shown in the figure, the structure of the solenoid valve 1 includes the following components: a first-rate housing 10, a chamber 102, a fluid input port 104, a moving iron core 108, an elastic element 110, and a fluid output port 112. A magnetic circuit housing 90, a coil holder 902, a coil group 904, a magnetic yoke iron 906 and a fixed iron core 908.

The operating principle is as follows: when the solenoid valve 1 is inactive and is in a power-off state, the elastic element 110 maintains an elastic force against the moving iron core 108 to block toward the fluid input port 104, so that the equipment connected to the fluid input port 104 cannot provide fluid The source, in turn, interrupts the path relationship between the fluid input 104 and the fluid output 112.

Please refer to the second figure as well, which is a sectional view of the conventional solenoid valve structure. As shown in the figure, when the solenoid valve 1 is energized, the coil assembly 904 is excited by electricity, which causes the moving iron core 108 and the fixed iron core 908 to generate magnetic attraction through the electromagnetic effect. At this time, the magnetic attraction force generated between the moving iron core 108 and the fixed iron core 908 is greater than the elastic force of the elastic element 110, causing the mobile iron core 108 to compress the elastic element 110 to generate a compressive elastic force, while moving toward the fixed iron core 908 to attract and fix , So that the blocking relationship between the moving iron core 108 and the fluid input end 104 is released. Then, the equipment connected to the fluid input end 104 can provide a source of fluid, and exhibit a conduction relationship through the passage between the chamber 102 and the fluid output end 112, and the fluid can be delivered to the equipment connected to the fluid output end 112.

Take the previous stage, and refer again to the first figure, when the solenoid valve 1 is restored to the power-off state again, the coil assembly 904 is no longer energized and the magnetic phase generated by the electromagnetic effect no longer exists between the moving iron core 108 and the fixed iron core 908 Suction force, the elastic element 110 compressed by the moving iron core 108 releases the compressive elastic force, and restores the elastic force it maintains against the moving iron core 108 towards the fluid input end 104 to perform a blocking operation, thereby again cutting off the fluid input end 104 and the fluid output end 112 The relationship between channels. Here, the conventional solenoid valve 1 can switch the channel relationship between the fluid input end 104 and the fluid output end 112 through its own opening and closing actuation methods.

However, the technical features disclosed in the above-mentioned conventional solenoid valve structure have the following defects to be improved:

1. The elastic element performs compression, reset and other actions for a long time, which is prone to elastic fatigue. This will make the sealing effect between the moving iron core and the fluid input end low, which will cause the equipment connected to the fluid input end and output end. Misoperation occurs, which reduces the service life of the solenoid valve itself and the equipment connected to it. At the same time, the yield and quality of the products made on the production lines of these connected equipment will also be affected.

2. In order to maintain the elastic force of the elastic element can effectively block the reliability of the fluid input end, it is necessary to strengthen the elastic strength of the elastic element; in order to make the electromagnetic effect of the solenoid valve energized and excited, the magnetic core magnetic attraction force generated by it is greater than the elasticity The increased elasticity of the element requires improvement of the structure of the related element provided in the magnetic circuit housing. For example, increase the number of coils in the coil set to increase the magnetic phase attraction. In this way, the components provided relative to the coil set must also be correspondingly larger before they can be implemented (that is, the coil holder needs to increase the structure of the coil set for accommodation) As a result, the structure area and cost of the solenoid valve have increased, and the use of it has been restricted to a certain extent. When it cannot be more widely used in any field, it can be combined to increase its practicality.

3. The contact between the fluid input end and the moving iron core through long-term abutment and separation actuation methods can easily cause the components of this part to wear, resulting in a decrease in the reliability of the adhesion between the two, so it will cause the above "1." The mentioned problem appears.

In view of this, how to improve these missing problems should be an important direction for the industry to solve and overcome.

An object of the present invention is to provide a close-strength strengthening structure of a solenoid valve, which uses an actuating relationship between a permanent magnet and a moving iron core, and is matched with an elastic element to multiply strengthen the tightness between the fluid input end and the moving iron core Sex.

An object of the present invention is to provide an adhesion strengthening structure of a solenoid valve, which changes the magnetism of a moving iron core and a fixed iron core by the electromagnetic effect generated by the solenoid valve, and utilizes the magnetic relationship between the moving iron core and the permanent magnet, Enhance the force of pushing the moving iron core to adsorb and fix the iron core.

In order to achieve the above purpose and technical means adopted, the present invention provides a close strengthening structure of a solenoid valve, which includes at least one fluid input end, at least one permanent magnet, at least one moving iron core, and at least one fixed iron core , At least one elastic element and at least one fluid output end. The fluid input end is provided on one side of the chamber, and the permanent magnet is provided on one side of the fluid input end connected to the chamber, and the iron core is relatively moved. The moving iron core is movably arranged in the chamber, one end is opposite to the fluid input end, and the other end is opposite to the fixed iron core. The elastic element uses its elastic deformation to make the moving iron core abut the fluid input end. The fluid output end communicates with the fluid input end through the chamber; wherein, when the solenoid valve is actuated, the moving iron core moves away from the fluid input end, and a fluid can flow from the fluid input end to the fluid output end through the chamber. Here, the present invention can achieve the effect of strengthening the adhesion and enhancing the magnetic phase suction force generated by the electromagnetic effect without changing the outer structure of the electromagnetic valve.

In order to have a better understanding and understanding of the features of the present invention and the achieved effects, the examples and detailed descriptions are accompanied by the following explanations:

After investigation, the conventional solenoid valve structure disclosed in the prior art has some defects that need to be improved in the implementation of the operation. These defects are likely to cause the malfunction of the related connected equipment, resulting in the service life of the solenoid valve structure itself and the connected equipment. The reduction will also affect the yield and quality of the products made on the equipment production line, or have a certain degree of restrictions on use due to the appearance structure and cost considerations. Here, there is a need to improve against these problems. The present invention provides a close strengthening structure of the solenoid valve, and solves these problems according to the technical methods taught below, thereby enhancing the practical value of the solenoid valve structure.

Please refer to the third figure, which is a schematic cross-sectional view of the adhesion strengthening structure of the solenoid valve according to the first embodiment of the present invention. As shown in the figure, the adhesion strengthening structure of the solenoid valve 1 of the present invention includes the following components: a chamber 102, at least one fluid input end 104, at least one permanent magnet 106, at least one moving iron core 108, at least one elastic element 110 , At least one fluid output end 112 and at least one fixed iron core 908.

The chamber 102 is disposed inside a flow channel housing 10 included in the solenoid valve 1, the fluid input end 104 communicates with the flow channel housing 10 and is disposed on one side of the chamber 102, and the fluid output end 112 communicates with the flow channel housing 10 and is disposed It is on the other side of the chamber 102 and communicates with the fluid input 104 through the chamber 102. The permanent magnet 106 is disposed on one side of the fluid input end 104 connected to the chamber 102 and is opposite to the moving iron core 108. In this embodiment, the permanent magnet 106 is disposed at the outer edge of the fluid input end 104, but not limited to this, and may also be disposed at the inner edge of the fluid input end 104. The moving iron core 108 is movably disposed in the chamber 102, and one end is opposite to the fluid input end 104, and the other end is opposite to the fixed iron core 908. The elastic element 110 uses its elastic deformation to make the moving iron core 108 abut the fluid input端 104.

In addition, the structure of the solenoid valve 1 of the present invention further includes a magnetic circuit housing 90, a coil holder 902, a coil assembly 904, and a magnetic conductive yoke 906. The bobbin 902 is disposed in the magnetic circuit housing 90 and is located between the moving iron core 108 and the fixed iron core 908, and the coil group 904 is disposed in the bobbin 902. The magnetic yoke iron 906 is disposed in the magnetic circuit housing 90 and is located on one side of the bobbin 902. The fixed iron core 908 is disposed inside the magnetic circuit housing 90 and relatively moves the iron core 108 and the bobbin 902.

The fluid input port 104 of the present invention can be connected to a device that supplies fluid (for example, gas, liquid), the fluid output port 112 outputs fluid to be supplied to related equipment, and then the fluid input port 104 and the fluid are determined by the operation mode of the solenoid valve 1 The path relationship of the output end 112 can further switch the path state (on, off) between the fluid input end 104 and the fluid output end 112 according to the user's needs.

When the solenoid valve 1 of the present invention is not actuated, the moving iron core 108 and the fixed iron core 908 as a metal member are not magnetic. At this time, the moving iron core 108 does not move horizontally between the permanent magnet 106 and the fixed iron core 908, and the moving iron core 108 will press against the fluid input end 104 due to the elastic deformation of the elastic element 110 (as shown by the arrow in the figure). The blocking, coupled with the magnetism of the permanent magnet 106, produces a magnetic attraction effect, which causes the moving iron core 108 to effectively block the fluid input end 104 through the double acting force of the elastic force and the magnetic attraction force. Furthermore, it is different from the traditional solenoid valve structure in that it only uses the elastic force of the elastic element 110 to perform the sealing and blocking, and its structural design is not as good as the effect brought by the sealing optimization of the present invention.

Therefore, through the elastic force of the elastic element 110 and the magnetic attraction force of the permanent magnet 106, the moving iron core 108 can strengthen the adhesion with the fluid input end 104, thereby enhancing the adhesion effect of the solenoid valve 1; at this time, the fluid input end 104 is blocked by the moving iron core 108, and the channel relationship with the fluid output end 112 is cut off, so that the devices connected to the fluid input end 104 and the fluid output end 112 cannot be communicated with each other, so that the fluid cannot be supplied to flow between each other.

Please also refer to the fourth figure, which is a cross-sectional view of the electromagnetic valve of the first embodiment of the present invention. As shown in the figure, when the solenoid valve 1 of the present invention is actuated, the coil assembly 904 is excited under the energized state, the moving iron core 108 and the fixed iron core 908 generate a magnetic field due to the electromagnetic effect, and the magnetic yoke iron 906 is used to enhance the electromagnetic effect, In order to improve and concentrate the adsorption force of the moving iron core 108 and the fixed iron core 908; wherein the moving iron core 108 and the fixed iron core 908 generate a magnetic field due to the electromagnetic effect is a conventional technology, which will not be described in detail and will be omitted in the embodiment Instructions.

When the solenoid valve 1 is actuated, one end of the moving iron core 108 generates a repulsive magnetic force with the permanent magnet 106 by electromagnetic action, and the other end generates a magnetic attraction force with the fixed iron core 908 to move The iron core 108 moves toward the fixed iron core 908 through the double acting force of the repulsive magnetic force and the attracting magnetic force (as shown by arrows in the figure), and the compression elastic element 110 generates a compression elastic force (not shown). At the same time, the adsorption relationship between the moving iron core 108 and the permanent magnet 106 is released, and it does not have the effect of blocking the fluid input 104. Therefore, the channel relationship between the fluid input 104 and the fluid output 112 is conducted. The devices to which the fluid output ports 112 are connected to each other can be connected to the fluid.

Among them, the sum of the repulsive magnetic force and the attracting magnetic force is greater than the elastic force of the elastic element 110 itself, thereby compressing the elastic element 110 to generate a compression elastic force, and pushing the moving iron core 108 to move toward the fixed iron core 908. In another embodiment, the forces of the repulsive magnetic force and the attracting magnetic force are greater than the elastic force of the elastic element 110 itself, which can also compress the elastic element 110 to generate a compressive elastic force and push the moving iron core 108 to move toward the fixed iron core 908. Therefore, through the repulsive magnetic force provided by the permanent magnet 106 and the moving iron core 108, the magnetic attraction of pushing the moving iron core 108 and the fixed iron core 908 can be multiplied.

Referring back to the third figure, when the solenoid valve 1 of the present invention stops operating, the coil assembly 904 is no longer energized and cannot perform electromagnetic action to cause the moving iron core 108 and the fixed iron core 908 to generate a magnetic field. At this time, the moving iron core 108 and the fixed iron core 908 as a metal member do not have magnetism, so the magnetic attraction relationship between the two is released, and due to the release of the compression elastic force of the elastic element 110 and the magnetic attraction force of the permanent magnet 106, The double acting force between the two pushes the moving iron core 108 to block the fluid input end 104, and the fluid input end 104 resumes the blocking state of the solenoid valve 1 which has not been activated at the beginning (that is, the moving iron core 108 does not move horizontally, and Abutting the fluid input end 104); where the sum of the magnetic attraction force of the permanent magnet 106 and the compressive elastic force released by the elastic element 110 is greater than the fluid thrust in the fluid input end 104, which can strengthen the mobile iron core 108 to return Until the permanent magnet 106 exhibits a magnetic attraction state, and the elastic force maintained by the elastic element 110 can effectively enhance the adhesion of the fluid input end 104. In another embodiment, the relative magnetic attraction force of the permanent magnet 106 and the compression elastic force released by the elastic element 110 are both greater than the fluid thrust force in the fluid input end 104, which can also strengthen the mobile iron core 108 to return to the permanent magnet 106 to exhibit magnetic attraction status.

Please refer to the fifth figure, which is a sectional view of the electromagnetic valve of the second embodiment of the adhesion strengthening structure. As shown in the figure, the difference between the second embodiment of the present invention and the first embodiment is that two fluid output ends 112 may be provided to connect to the chamber 102, and the other ends of the fluid output ends 112 communicating with the chamber 102 may be connected at least A control element (not shown) to determine the on-off relationship with the fluid input 104. For example, by controlling the element to open one fluid output port 112 and close the other fluid output port 112, when the fluid input port 104 and the fluid output ports 112 are in a conducting state due to the activation of the solenoid valve 1, the fluid can be delivered to One of the fluid output ports 112 is used in connected equipment; however, the actuation method of the solenoid valve 1 of the second embodiment of the present invention is the same as that of the first embodiment, and is not repeated here. Therefore, the second embodiment of the present invention determines the passage relationship between the fluid input end 104 and the fluid output end 112 through the opening and closing of the solenoid valve 1, and then the control element provided at the other end of the fluid output end 112 is also The state of fluid connection can be switched.

Please refer to the sixth figure, which is a cross-sectional view of the electromagnetic valve of the third embodiment of the present invention. As shown in the figure, the third embodiment of the present invention is similar to the first embodiment in that two fluid input ends 104 can be provided to connect to the chamber 102, and permanent magnets are also provided on one side of the fluid input ends 104, respectively. 106, and two mobile iron cores 108 are respectively arranged corresponding to the fluid input ends 104, and a fixed iron core (not shown) can be adapted to the mobile iron core 108 to be set to two, or a fixed iron core is directly used to correspond Both moving iron cores 108 can be used, and it is not limited to this; wherein, the solenoid valve 1 of the third embodiment operates in the same manner as the first embodiment, and the fluid input ports 104 communicate with the chamber 102 The other end can also be the same as the control element (not shown) provided at the other end of the fluid output end 112 of the second embodiment to switch the fluid delivery mode, which will not be detailed here.

Please refer to the seventh figure, which is a sectional view of the electromagnetic valve of the fourth embodiment of the adhesion strengthening structure. As shown in the figure, the difference between the fourth embodiment and the third embodiment of the present invention is that two fluid input ends 104 can be provided to connect to the chamber 102, and simultaneously block the two fluid input ends 104 through a moving iron core 108 The remaining operation modes are the same as the third embodiment, and will not be described in detail here.

In summary, the components of the embodiments of the present invention disclosed above can be correspondingly arranged in plural according to the needs of users. The adhesion strengthening structure of the solenoid valve of the present invention can be strengthened according to the permanent magnet provided on the side of the fluid input end, which is matched with the moving iron core and the elastic element. It can also provide the multiplying force of the magnetic phase suction force of the solenoid valve due to the electromagnetic effect, and can improve the lack of waiting for improvement described in the prior art. Here, the technical means taught by the present invention can achieve the equivalent effect of enhancing the adhesion of the solenoid valve, reducing the external structure and cost of the solenoid valve, and enhancing the magnetic phase suction of the electromagnetic effect.

1‧‧‧ Solenoid valve

10‧‧‧Runner housing

102‧‧‧ chamber

104‧‧‧ fluid input

106‧‧‧Permanent magnet

108‧‧‧Mobile iron core

110‧‧‧Elastic element

112‧‧‧ fluid output

90‧‧‧Magnetic housing

902‧‧‧coil holder

904‧‧‧coil set

906‧‧‧Magnetic yoke

908‧‧‧Fixed iron core

The first picture: it is a schematic sectional view of a conventional solenoid valve structure; the second picture: it is a sectional schematic diagram of the conventional solenoid valve structure; the third picture: it is the adhesion of the solenoid valve according to the first embodiment of the invention A schematic cross-sectional view of the reinforced structure; the fourth figure: it is a cross-sectional action diagram of the close reinforced structure of the solenoid valve of the first embodiment of the invention; the fifth figure: it is the close seal of the solenoid valve of the second embodiment of the invention The cross-sectional action diagram of the reinforced structure; the sixth figure: it is the cross-sectional action diagram of the close reinforced structure of the solenoid valve of the third embodiment of the invention; and the seventh figure: it is the solenoid valve of the fourth embodiment of the invention The cross-sectional view of the close reinforced structure is a moving picture.

Claims (10)

A close strengthening structure of a solenoid valve includes: at least one fluid input end, which is arranged on one side of a chamber; at least one permanent magnet, which is arranged on one side of the fluid input end connected to the chamber, and opposite At least one movable iron core is provided, the movable iron core is movably disposed in the chamber, one end is opposite to the fluid input end, and the other end is oppositely provided with at least one fixed iron core; at least one elastic element, which utilizes its elastic deformation to make The mobile iron core abuts the fluid input end; at least one fluid output end, which communicates with the fluid input end through the chamber; and a coil set, which is disposed between the mobile iron core and the fixed iron core for Exciting or not exciting the moving iron core and the fixed iron core; wherein, when the solenoid valve is actuated, the moving iron core is moved away from the permanent magnet, and a fluid can flow into the fluid from the fluid input end through the chamber Output. The adhesion strengthening structure of the solenoid valve as described in item 1 of the patent application scope, wherein when the solenoid valve is actuated, one end of the moving iron core generates a repulsive magnetic force with the permanent magnet, and the other end generates with the fixed iron core One-phase magnetic force, the magnetic force pushes the moving iron core to compress the elastic element, and attracts and fixes with the fixed iron core. The adhesion strengthening structure of the electromagnetic valve as described in item 2 of the patent application scope, wherein the repulsive magnetic force and the phase attracting magnetic force are both greater than the elastic force of the elastic element itself. The adhesion strengthening structure of the solenoid valve as described in item 2 of the patent application scope, wherein the sum of the repulsive magnetic force and the phase magnetic attraction force is greater than the elastic force of the elastic element itself. The adhesion strengthening structure of the solenoid valve as described in item 1 of the patent application scope, wherein when the solenoid valve is not actuated, one end of the moving iron core and the permanent magnet generate a magnetic attraction force, and the elastic element releases a compression The elastic force, the compression elastic force and the phase attracting magnetic force push the movable iron core to be fixed with the permanent magnet and block the fluid input end. The adhesion strengthening structure of the solenoid valve as described in item 5 of the patent application scope, wherein the phase magnetic attraction force and the compression elastic force are both greater than the fluid thrust force in the fluid input end. The adhesion strengthening structure of the solenoid valve as described in item 5 of the patent application range, wherein the sum of the acting force of the phase magnetic attraction force and the compression elastic force is greater than the fluid thrust in the fluid input end. The adhesion strengthening structure of the solenoid valve as described in item 1 of the patent application scope further includes a first-rate housing, the cavity is provided inside the flow channel housing, and the fluid input end and the fluid output end respectively communicate with the The flow channel housing is provided on one side and the other side of the chamber. The adhesion strengthening structure of the solenoid valve as described in item 1 of the patent application scope further includes a magnetic circuit housing, inside which is provided a coil holder and a magnetically conductive yoke, the coil assembly is provided on the coil holder, the The coil frame is disposed between the moving iron core and the fixed iron core, the magnetically conductive yoke is disposed on one side of the coil frame, the fixed iron core is disposed in the magnetic circuit housing, and is opposite to the moving iron core and the Coil stand. The adhesion strengthening structure of the solenoid valve as described in item 1 of the patent application scope, wherein the permanent magnet is disposed at the outer edge of the fluid input end.