JP3203262U - Electromagnetic pilot three-way valve and air conditioning system - Google Patents

Abstract

An electromagnetic pilot three-way valve for an air conditioning system that reduces the number of members in the main valve and reduces the manufacturing cost of the main valve. An electromagnetic pilot three-way valve includes a main valve 1 and a pilot valve 2. The main valve 1 includes a main valve body 11, a piston 12, a bracket 13, a slide block 14, and a first elastic member 15. Including. The space inside the main valve body 11 is divided into a first pressure chamber 111 and a second pressure chamber 112 by the piston 12, the slide block 14 and the piston 12 are connected by a bracket 13, and the main valve body 11 is a second pressure chamber. The A communication tube 10, the B communication tube 20, and the C communication tube 30 are connected to a portion corresponding to the chamber 112, and the a capillary tube 40, the b capillary tube 50, and the c capillary tube 60 are connected to the pilot valve 2. The pilot valve 2 controls the communication of the b capillary tube 50 to the a capillary tube 40 or the c capillary tube 60, the b capillary tube 50 is connected to the first pressure chamber 111, and the c capillary tube 60 is connected to the C communication tube 30. [Selection] Figure 1

Description

The utility model relates to an electromagnetic pilot three-way valve and an air conditioning system.

The current air conditioning system includes a flow path switching valve. The flow path switching valve is provided with an electric machine, a reduction gear, and a slide block. The reduction gear is driven and rotated by the electric machine, and the slide block is interlocked by the reduction gear. By rotating, the open / close state of different valve ports of the flow path switching valve is switched. The slide block is appropriately modified according to the change in the diameter of the valve opening of the flow path switching valve.

However, in the above-described conventional technology, that is, when the valve opening of the flow path switching valve increases, the operating force for driving the slide block and sealing the valve opening increases. That is, when the frictional force between the slide block and the flow path switching valve increases, the action force that causes the electric machine to rotate the slide block in conjunction with the reduction gear is correspondingly increased. For this reason, the current flow path switching valve has disadvantages such as low versatility and a complicated structure. Therefore, the present inventor considered that the above-described drawbacks can be improved, and as a result of intensive studies, the present inventor has arrived at a proposal of the present invention that effectively improves the above-described problems with a rational design.

The present utility model has been made in view of the above circumstances, and in order to solve the above-described problems, the present invention mainly aims to provide an electromagnetic pilot three-way valve and an air conditioning system.

In order to solve the above-described problems and achieve the above object, the present invention provides an electromagnetic pilot three-way valve according to the present invention comprising a main valve and a pilot valve, wherein the main valve includes a main valve body, a piston, a bracket, A slide block and a first elastic member. The space inside the main valve body is divided into a first pressure chamber and a second pressure chamber by the piston, the slide block and the piston are connected by a bracket, and the main valve body corresponds to the second pressure chamber. A communication tube, B communication tube and C communication tube are connected to the pilot valve, and a capillary tube, b capillary tube and c capillary tube are connected to the pilot valve. The pilot valve controls the communication of the b capillary to the a capillary or the c capillary, the b capillary is connected to the first pressure chamber, and the c capillary is connected to the C communication pipe. In a state where the b capillary is communicated with the c capillary, the piston is driven by the first elastic member to move toward the first pressure chamber, and the A communication pipe is communicated with the B communication pipe. In a state where the b capillary is communicated with the a capillary, the piston is driven and moved toward the second pressure chamber by the high-pressure gas put in the a capillary, and the A communication pipe is communicated with the C communication pipe.

In a preferred embodiment of the utility model, the slide block and the piston are connected by a bracket, and in a state where the b capillary is communicated with the c capillary, the piston is driven by the first elastic member to enter the first pressure chamber. And the slide block moves along the piston in the direction of the first pressure chamber. In this process, if the elastic potential energy of the first elastic member is sufficiently large, the piston can overcome the frictional force between the main valve body and the slide block moves in conjunction with this. Similarly, in a state where the b capillary is in communication with the a capillary, the piston is driven and moved toward the second pressure chamber by the high-pressure gas put in the a capillary, and the slide block moves together with the second pressure chamber according to the piston. Move in the direction of. In this process, if the pressure value of the high pressure gas is sufficiently large, the piston can overcome the frictional force between the main valve body and the slide block moves in conjunction with this. That is, the pressure of the high-pressure gas placed in the capillary tube is sufficiently large regardless of which one or more of the A communication pipe, the B communication pipe, and the C communication pipe is modified. If the elastic potential energy released from is sufficiently large, the slide block moves according to the piston. With this design, the electromagnetic pilot three-way valve according to the present invention can be applied to A communication pipes, B communication pipes and C communication pipes having different pipe diameters.

In addition, the piston is driven by the first elastic member and moves toward the first pressure chamber, thereby eliminating the need to put high-pressure gas into the second pressure chamber. This design simplifies the connection structure between the main valve and the pilot valve and reduces the manufacturing cost of the electromagnetic pilot three-way valve.

Preferably, the main valve further includes a valve seat member installed in the second pressure chamber, and the first elastic member is sandwiched between the piston and the valve seat member. With this design, the piston is driven and moved toward the first pressure chamber by the elastic potential energy released from the elastic member.

Preferably, the valve seat member includes a valve seat and a support frame connected to the valve seat, one end of the first elastic member is in contact with the piston, and the other end of the first elastic member is the valve seat and the support frame. Respectively. With this design, the elastic potential energy released from the first elastic member acts evenly on the bottom of the bowl-like shape of the piston, and the piston is prevented from tilting during the movement process.

Preferably, a second elastic member is sandwiched between the slide block and the bracket, and the slide block is driven by the second elastic member to move according to the bracket and is bonded to the valve seat. The second elastic member applies a force to the valve seat of the slide block.

Preferably, the support frame is provided with a notch. The notch is used to increase the flow of coolant located on the two sides of the support frame of the second pressure chamber.

Preferably, the support frame is surrounded after being connected to the valve seat to form an annular path, and the bracket and the slide block penetrate the annular path. The annular path prevents the slide block from rotating during the movement in the second pressure chamber.

Preferably, the bracket is provided with a vent hole. The ventilation holes increase the flow of coolant located at the two ends of the bracket of the second pressure chamber.

The air conditioning system according to the utility model includes a compressor, a four-way switching valve, an indoor heat exchanger, a throttle member, an outdoor heat exchanger, and a flow path switching valve. The indoor heat exchanger and the flow path switching valve are each communicated with a compressor by a four-way switching valve, the indoor heat exchanger and the outdoor heat exchanger are communicated by a throttle member, and the flow path switching valve is an outdoor heat exchange Communicated with the vessel. The flow path switching valve is an electromagnetic pilot three-way valve by any one of the technical means described above.

BRIEF DESCRIPTION OF THE DRAWINGS It is a structure conceptual diagram (in the case of a defrost state) which shows the air conditioning system of preferable embodiment of this utility model. It is a composition conceptual diagram (when not in a defrost state) which shows an air-conditioning system of a preferred embodiment of this utility model. It is an external appearance perspective view which shows the electromagnetic pilot three-way valve of preferable embodiment of this utility model. It is a first sectional view showing an electromagnetic pilot three-way valve of a preferred embodiment of the utility model. It is a 2nd sectional view showing an electromagnetic pilot three-way valve of a preferred embodiment of this utility model. It is an expanded view of the part which shows the electromagnetic pilot three-way valve of preferable embodiment of this utility model. It is sectional drawing which shows the pilot valve of preferable embodiment of this utility model.

Preferred embodiments of the utility model will be described with reference to the accompanying drawings. The embodiment described below does not limit the contents of the present invention described in the claims of the utility model registration. In addition, all the configurations described below are not necessarily essential requirements of the present invention.

First embodiment An air conditioning system includes a compressor 3, a four-way switching valve 4, an indoor heat exchanger 5, a throttle member 6, an outdoor heat exchanger 7, and a flow path switching valve (Fig. 1). The compressor 3 includes an A1 interface, an A2 interface, an A3 interface, and an A4 interface, and the four-way switching valve 4 includes a C interface, a D interface, an E interface, and an S interface. The indoor heat exchanger 5 includes a B1 interface and a B2 interface, the outdoor heat exchanger 7 includes a C1 interface and a C2 interface, and the flow path switching valve is an electromagnetic pilot three-way valve. The electromagnetic pilot three-way valve includes a main valve 1 and a pilot valve 2, and the main valve 1 includes a main valve body 11 and a piston 12, and a space inside the main valve body 11 is defined by the piston 12 and a first pressure chamber 111 and a second valve. The A communication pipe 10, the B communication pipe 20, and the C communication pipe 30 are connected to a portion corresponding to the second pressure chamber 112 of the main valve body 11, and the pilot valve 2 is connected to the a capillary tube 40. , B capillary tube 50 and c capillary tube 60 are connected. The A1 interface of the compressor 3 communicates with the D interface of the four-way switching valve 4 and the a capillary tube 40, and the A2 interface of the compressor 3 and the A3 interface of the compressor 3 communicate with the S interface of the four-way switching valve 4, respectively. The B1 interface is communicated with the E interface of the four-way switching valve 4, and the B2 interface of the indoor heat exchanger 5 and the C1 interface of the outdoor heat exchanger 7 are communicated by the throttle member 6. The C2 interface of the outdoor heat exchanger 7 communicates with the A communication pipe 10, the B communication pipe 20 communicates with the C interface of the four-way switching valve 4, and the C communication pipe 30 communicates with the A4 interface and the c capillary 60 of the compressor 3, respectively. The b capillary tube 50 is communicated with the first pressure chamber 111.

The main valve 1 further includes a bracket 13, a slide block 14, a first elastic member 15, a valve seat member 16, and a screw nail 18. As shown in FIGS. 3, 4, and 6, the piston 12 is provided with a through hole 121 in the axial direction, and a screw thread hole 132 is provided on one side of the bracket 13 close to the piston 12. Is penetrated through the through hole 121 and connected to the thread of the thread hole 132, and the bracket 13 is fixed to the bottom side of the piston 12. A convex portion 141 is extended upward from the slide block 14, and an installation hole 131 to be combined with the convex portion 141 is provided on one side of the bracket 13 away from the piston 12, and the convex portion 141 is in the installation hole 131. The second elastic member 17 is sandwiched between the bracket 13 and the slide block 14 by being moved along the axial direction of the installation hole 131. The second elastic member 17 is a spring plate, and the second elastic member 17 is provided with an avoidance hole 171 combined with the convex portion 141, and the convex portion 141 is inserted into the installation hole 131 through the avoidance hole 171. Is done. The first elastic member 15 is a coil spring, and the first elastic member 15 is covered with a bracket 13. The valve seat member 16 includes a valve seat 161 and a support frame 162 connected to the valve seat 161, and the valve seat 161 is provided with a C interface 1611 and a B interface 1612. When the B communication pipe 20 is connected to the main valve body 11, the B communication pipe 20 and the second pressure chamber 112 are connected by the B interface 1612. When the C communication pipe 30 is connected to the main valve body 11, the C communication pipe 30 and the second pressure chamber 112 are connected by the C interface 1611. The lower end of the support frame 162 is provided with a notch, which is referred to as a lower notch 1621 in the present invention for ease of description, and the valve seat 161 is inserted into the lower notch 1621, whereby the support frame 162 is Connected to the valve seat 161. The slide block 14 is positioned above the valve seat 161, and the slide block 14 is bonded to the valve seat 161 by the elastic potential energy released from the second elastic member 17. When the piston 12 moves toward the first pressure chamber 111, the C interface 1611 is sealed by the slide block 14. When the piston 12 moves toward the second pressure chamber 112, the B interface 1612 is sealed by the slide block 14.

The pilot valve 2 includes a pilot valve body 21, a duct 22, a pilot valve seat 23, and a coil kit 24 (see FIG. 7). The pilot valve seat 23 is installed in the pilot valve body 21, the duct 22 is connected to the pilot valve body 21, and the coil member 24 is wound around the duct 22. The duct 22 is provided with an attractor 25, a core core 26 and a third elastic member 27. The third elastic member 27 is a coil spring, and the core core 26 has a pilot valve. A carriage 28 extending to the position of the seat 23 is installed, and the carriage 28 is provided with a sliding portion 29 that is bonded to the pilot valve seat 23. When the pilot valve 2 excites the coil member 24, the core mandrel 26 moves in the direction of the attractor 25. In the process in which the core core 26 moves in the direction of the attractor 25, the core core 26 is moved relative to the pilot valve seat 23 by moving the sliding portion 29 by the carriage 28, whereby the a capillary 40 And b communication with the capillary tube 50 is realized. When the pilot valve 2 does not excite the coil member 24, the core mandrel 26 is driven by the third elastic member 27 and moves away from the attractor 25. In the process in which the core core 26 moves away from the attractor 25, the core core 26 is moved with respect to the pilot valve seat 23 by interlocking the sliding portion 29 by the carriage 28, whereby the b capillary tube is moved. 50 and communication with the c capillary tube 60 are realized.

The A1 interface of the compressor 3 communicates with the D interface of the four-way switching valve 4 and the a capillary tube 40, whereby high-pressure gas in the A1 interface of the compressor 3 moves to the D interface of the four-way switching valve 4, and a capillary tube 40. Move further in (see FIG. 1).

As shown in FIGS. 1 and 7, when the air conditioning system is in a defrosting state, the indoor heat exchanger 5 generates the action of the condenser, the outdoor heat exchanger 7 generates the action of the evaporator, and the pilot valve 2 excites the coil member 24 to realize communication between the a capillary 40 and the b capillary 50. Any one of the high-pressure gases in the A1 interface of the compressor 3 is the A1 interface of the compressor 3 → a capillary tube 40 → b capillary tube 50 → first pressure chamber 111. When the high pressure gas continuously moves into the first pressure chamber 111, the piston 12 is driven by the high pressure gas and moves toward the second pressure chamber 112, and the A communication pipe 10 is communicated with the C communication pipe 30. At this time, another movement path of the high-pressure gas in the A1 interface of the compressor 3 is as follows: the A1 interface of the compressor 3 → the D interface of the four-way switching valve 4 → the E interface of the four-way switching valve 4 → the indoor heat exchanger 5. B1 interface → B2 interface of the indoor heat exchanger 5 → throttle member 6 → C1 interface of the outdoor heat exchanger 7 → C2 interface of the outdoor heat exchanger 7 → A communication pipe 10 → C communication pipe 30 → A4 interface of the compressor 3 is there.

As shown in FIGS. 1 and 6, when the air conditioning system is in a defrosting state, the movement path of the high pressure gas in the A2 interface of the compressor 3 and the movement path of the high pressure gas in the A3 interface of the compressor 3 are the same. The movement path of the high pressure gas in the A2 interface of the compressor 3 is, for example, the A2 interface of the compressor 3 → the S interface of the four-way switching valve 4 → the C interface of the four-way switching valve 4 → the B communication pipe 20. When the B interface 1612 of the valve seat 161 is blocked by the slide block 14, the high-pressure gas in the A2 interface of the compressor 3 only moves into the B communication pipe 20.

2 and 7, when the air conditioning system is not in the defrosting state, the indoor heat exchanger 5 generates an evaporator function, and the outdoor heat exchanger 7 generates a condenser function. The pilot valve 2 does not excite the coil member 24, and the conduit between the a capillary 40 and the b capillary 50 is cut off. One movement path of the high-pressure gas in the A1 interface of the compressor 3 is the A1 interface → a capillary tube 40 of the compressor 3. When the pilot valve 2 does not perform field excitation on the coil member 24, the b capillary tube 50 is communicated with the c capillary tube 60, and the movement path of the high pressure gas in the first pressure chamber 111 is the first pressure chamber 111. → c capillary tube 60 → b capillary tube 50 → C communication tube 30 → A4 interface of the compressor 3 After the high-pressure gas in the first pressure chamber 111 moves to the compressor 3, the piston 12 is driven by the first elastic member 15 to move toward the first pressure chamber 111, and the A communication pipe 10 and the B communication pipe 20 Realize communication. At this time, another movement path of the high-pressure gas in the A1 interface of the compressor 3 is as follows: the A1 interface of the compressor 3 → the D interface of the four-way switching valve 4 → the C interface of the four-way switching valve 4 → the B communication pipe 20 → A Communication pipe 10 → C2 interface of outdoor heat exchanger 7 → C1 interface of outdoor heat exchanger 7 → Throttle member 6 → B2 interface of indoor heat exchanger 5 → B1 interface of indoor heat exchanger 5 → E of four-way switching valve 4 Interface → S interface of the four-way switching valve 4 → A2 interface of the compressor 3 (or A3 interface of the compressor 3).

As shown in FIGS. 4 and 6, in this embodiment, a notch is provided at the upper end of the support frame 162. In the present invention, this is referred to as an upper notch 1622 for ease of description. The notch 1622 is installed in the radial direction with respect to the main valve body 11. This design increases the flow of coolant located on the two sides of the support frame 162 of the second pressure chamber 112. After the valve seat 161 is inserted into the lower notch 1611, the valve seat 161 and the support frame 162 are connected and integrated, and the two of them surround each other to form one annular path. The rotation of the slide block 141 is restricted.

In the present embodiment, the bracket 13 is provided with a vent hole 133. This design increases the flow of coolant located on the two sides of the bracket 13 of the second pressure chamber 112 (see FIGS. 4 and 6).

As shown in FIGS. 4 and 5, the connection positions between the A communication pipe 10, the B communication pipe 20 and the C communication pipe 30 and the main valve body 11 are modified, respectively, and the a capillary 40, the b capillary 50 and the c capillary are changed. The connection position between 60 and the pilot valve 2 is also changed. As shown in FIG. 4, taking the A communication pipe 10 as an example, in this embodiment, the A communication pipe 10 is connected to the upper end of the main valve body 11. According to another embodiment of the present invention, the A communication pipe 10 may be connected to the side wall of the main valve body 11 (see FIG. 5).

Second embodiment An air conditioning system includes a compressor, a four-way switching valve, an indoor heat exchanger, a throttle member, an outdoor heat exchanger, and a flow path switching valve. The compressor has an A1 interface. , The A2 interface, the A3 interface, and the A4 interface, and the four-way switching valve includes the C interface, the D interface, the E interface, and the S interface. The indoor heat exchanger includes a B1 interface and a B2 interface, and the outdoor heat exchanger includes a C1 interface and a C2 interface. The flow path switching valve is an electromagnetic pilot three-way valve. The electromagnetic pilot three-way valve includes a main valve and a pilot valve. The main valve is composed of a main valve body and a piston. Divided into a pressure chamber and a second pressure chamber. The A communication pipe, the B communication pipe, and the C communication pipe are connected to the portion corresponding to the second pressure chamber of the main valve body, and the a capillary, the b capillary, and the c capillary are connected to the pilot valve. The A1 interface of the compressor communicates with the D interface and a capillary of the four-way switching valve, the A2 interface of the compressor and the A3 interface of the compressor communicate with the S interface of the four-way switching valve, and the B1 interface of the indoor heat exchanger is the four-way switching valve. To the E interface. The B2 interface of the indoor heat exchanger and the C1 interface of the outdoor heat exchanger are connected by a throttle member, the C2 interface of the outdoor heat exchanger is connected to the A communication pipe, and the B communication pipe is the C interface of the four-way switching valve. The C communication tube communicates with the A4 interface of the compressor and the c capillary tube, and the b capillary tube communicates with the first pressure chamber.

The difference between this embodiment and the first embodiment is that in this embodiment, the valve seat member includes a valve seat, one end of the elastic member is in contact with the piston, and the other end of the elastic member is in contact with the valve seat. It is a point. According to another embodiment of the present invention, the elastic member may be sandwiched between the piston and the inner wall of the main valve body. Taken together, the beneficial effect of this embodiment is that the number of members in the main valve is reduced and the manufacturing cost of the main valve is reduced.

The above-described embodiments are merely for explaining the technical idea and features of the present invention, and are intended to allow those skilled in the art to understand the contents of the present invention and to carry out the present invention. It does not limit the scope of the utility model registration request. Accordingly, improvements or modifications having various similar effects without departing from the spirit of the present invention shall be included in the following claims.

3 Compressor 4 Four-way selector valve 5 Indoor heat exchanger 6 Throttle member 7 Outdoor heat exchanger 1 Main valve 2 Pilot valve 11 Main valve body 12 Piston 111 First pressure chamber 112 Second pressure chamber 10 A communication pipe 20 B communication pipe 30 C communication tube 40 Capillary tube 50 Capillary tube 60 Capillary tube 13 Bracket 14 Slide block 15 First elastic member 16 Valve seat member 18 Screw nail 121 Through hole 132 Screw hole 141 Convex portion 17 Second elastic member 21 Pilot valve body 22 Duct 23 Pilot valve Seat 24 Coil kit 25 Attractor 26 Core core 27 Third elastic member 28 Carriage 29 Sliding part 133 Ventilation hole

Claims (8)

The electromagnetic pilot-type three-way valve includes a main valve and a pilot valve, and the main valve includes a main valve body, a piston, a bracket, a slide block, and a first elastic member. The space is divided into a first pressure chamber and a second pressure chamber, the slide block and the piston are connected by a bracket, and the main valve body is connected to a portion corresponding to the second pressure chamber with an A communication pipe and a B communication pipe. And the C communication tube is connected, and the pilot valve is connected to the a capillary, the b capillary, and the c capillary, the communication of the b capillary to the a capillary or the c capillary is controlled by the pilot valve, and the b capillary is The c capillary is connected to a pressure chamber, and the c capillary is connected to a C communication tube. In a state in which the b capillary is communicated with the c capillary, the piston is driven by the first elastic member to move toward the first pressure chamber, the A communicating tube is communicated with the B communicating tube, and the b capillary is replaced with the a capillary. In the state of communication, the electromagnetic pilot three-way is characterized in that the piston is driven and moved toward the second pressure chamber by the high-pressure gas put into the capillary a, and the A communication pipe is connected to the C communication pipe. Valve and air conditioning system. The electromagnetic valve according to claim 1, wherein the main valve further includes a valve seat member installed in the second pressure chamber, and the first elastic member is sandwiched between the piston and the valve seat member. Pilot three-way valve and air conditioning system. The valve seat member includes a valve seat and a support frame connected to the valve seat, one end of the first elastic member abuts on the piston, and the other end of the first elastic member contacts the valve seat and the support frame, respectively. The electromagnetic pilot three-way valve and the air conditioning system according to claim 2, wherein the electromagnetic pilot three-way valve and the air conditioning system are in contact with each other. The second elastic member is sandwiched between the slide block and the bracket, and the slide block is driven by the second elastic member to move according to the bracket and is bonded to the valve seat. The electromagnetic pilot three-way valve and air conditioning system described in 1. 4. The electromagnetic pilot three-way valve and the air conditioning system according to claim 3, wherein the support frame is provided with a notch. The electromagnetic pilot three-way valve according to claim 3, wherein the support frame is surrounded after being connected to the valve seat to form an annular path, and the bracket and the slide block penetrate the annular path. Air conditioning system. 2. The electromagnetic pilot three-way valve and the air conditioning system according to claim 1, wherein the bracket is provided with a vent hole. The air conditioning system includes a compressor, a four-way switching valve, an indoor heat exchanger, a throttle member, an outdoor heat exchanger, and a flow switching valve. The indoor heat exchanger and the flow switching valve are four-way switching valves. Respectively, the indoor heat exchanger and the outdoor heat exchanger are communicated by a throttle member, and the flow path switching valve is communicated to an outdoor heat exchanger. An electromagnetic pilot three-way valve and an air conditioning system, wherein the electromagnetic pilot three-way valve according to any one of claims 1 to 7.