WO2021057296A1

WO2021057296A1 - Three-way solenoid valve assembly method, and three-way solenoid valve

Info

Publication number: WO2021057296A1
Application number: PCT/CN2020/108578
Authority: WO
Inventors: 邸志强; 曾庆军
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2019-09-29
Filing date: 2020-08-12
Publication date: 2021-04-01
Also published as: CN112576800A; JP7366162B2; CN112576800B; JP2022549049A

Abstract

A three-way solenoid valve assembly method, comprising: connecting a guide sleeve (10) to a valve seat (20); connecting a nut assembly (30) to the valve seat (20); assembling a valve element assembly (40), sequentially mounting a screw (41), a gasket (42), a spring (43) and a valve rod (44) of the valve element assembly (40) on a spring sleeve (45) from the bottom up, and connecting the valve rod (44) to the spring sleeve (45); mounting the valve element assembly (40) on the valve seat (20) from a position below the valve seat (20) up, and connecting the valve element assembly (40) to the nut assembly (30) after passing through the guide sleeve (10).

Description

Electromagnetic three-way valve assembly method and electromagnetic three-way valve

Technical field

This application relates to the technical field of valves, and in particular to an electromagnetic three-way valve assembly method and an electromagnetic three-way valve.

Background technique

There are many types of existing flow control valves, including the commonly used three-way solenoid valves. In the refrigeration industry, three-way solenoid valves usually have one inlet and two outlets, but the fluid entering from this one inlet can only pass through two One of the outlets flows out, that is, the inlet can only communicate with one outlet, but is closed with the other outlet, so that there is only "on" or "off" function, and proportional distribution cannot be achieved. The overall structure of some three-way solenoid valves is also relatively complicated, which makes the processing and assembly process longer and more difficult, and it is difficult to ensure accurate processing accuracy.

Summary of the invention

The main purpose of the present application is to provide an electromagnetic three-way valve assembly method and an electromagnetic three-way valve, so as to solve the problem of complicated assembly process of the three-way electromagnetic valve in the prior art.

In order to achieve the above objective, according to an optional embodiment of the present application, an electromagnetic three-way valve assembly method is provided, which includes: connecting a guide sleeve with a valve seat; connecting a nut assembly with the valve seat; assembling a valve core assembly, Install the screw, gasket, spring and valve stem of the valve core assembly onto the spring sleeve from bottom to top, and connect the valve stem with the spring sleeve; install the valve core assembly from the bottom of the valve seat upwards to the valve seat, And the valve core assembly is connected with the nut assembly after passing through the guide sleeve.

In an alternative embodiment, when the guide sleeve is connected to the valve seat, the guide sleeve is installed above the valve seat.

In an alternative embodiment, the guide sleeve has a small-diameter section and a large-diameter section that are sequentially connected, and the large-diameter section is connected to the valve seat. When the nut assembly is connected to the valve seat, the nut assembly is sleeved above the valve seat It is connected with the valve seat behind the outer side of the small diameter section of the guide sleeve, and the nut assembly abuts against the guide sleeve.

In an alternative embodiment, when assembling the valve core assembly, the screw is first threaded on the spring sleeve from bottom to top, and the protrusion of the screw is abutted against the inner edge of the spring sleeve, and then the gasket The and springs are sequentially loaded into the spring sleeve from bottom to top, and the two ends of the gasket are respectively abutted with the screw and the spring, and then the valve stem is connected with the bottom of the spring sleeve.

In an alternative embodiment, after the valve stem is connected to the bottom of the spring sleeve, the first gasket, the gasket, and the second gasket are sequentially installed to the lower part of the valve stem from bottom to top, and the second The gasket and the valve stem have an interference fit.

In an optional embodiment, the method for assembling the electromagnetic three-way valve further includes connecting the first connecting pipe and the second connecting pipe to the side of the valve seat before connecting the guide sleeve to the valve seat, and the first connecting pipe The second connecting pipe is staggered along the axial direction of the valve core assembly.

In an optional embodiment, the method for assembling the electromagnetic three-way valve further includes connecting the third connecting pipe to the bottom surface of the valve seat after the valve core assembly is installed on the valve seat.

In an optional embodiment, when the third connecting pipe is connected, the third connecting pipe is connected to the valve core seat, the valve core seat is installed to the opening at the bottom of the valve seat, and the opening is blocked.

In an optional embodiment, the method for assembling the electromagnetic three-way valve further includes, after installing the third connecting pipe, sleeve the rotor assembly on the outside of the nut assembly, and connect the rotor assembly with the top of the screw.

In an alternative embodiment, when the rotor assembly is connected to the top of the screw, the axial position of the valve core assembly relative to the valve seat and the position of the rotor assembly relative to the nut assembly are adjusted to initialize the electromagnetic three-way valve.

In an optional embodiment, the method for assembling the electromagnetic three-way valve further includes, after installing the rotor assembly, arranging the housing on the outside of the rotor assembly, connecting the housing with the valve seat, and then connecting at least one of the housing and the valve seat One is connected to the fixing frame.

According to another aspect of the present application, there is provided an electromagnetic three-way valve, including: a valve seat; a guide sleeve connected with the valve seat; a nut assembly connected with the valve seat; a valve core assembly, the valve core assembly passing through the guide sleeve The inner part is connected with a nut assembly, and the valve core assembly includes a spring sleeve inserted in the guide sleeve, and a screw, a gasket, a spring and a valve stem which are sequentially connected with the spring sleeve from top to bottom.

In an optional embodiment, the valve seat has a first cavity and a second cavity spaced up and down, and a first valve port is formed between the first cavity and the second cavity, and the first cavity Connected with the first connecting pipe and the third connecting pipe, the second cavity is in communication with the second connecting pipe, a second valve port is formed between the first cavity and the third connecting pipe, and the valve core assembly controls the first valve port and The degree of opening of the second valve port.

In an optional embodiment, the valve core assembly further includes a first sealing gasket, a sealing ring, and a second sealing gasket arranged in order from top to bottom, the first sealing gasket is matched with the first valve port, and the second sealing gasket Cooperate with the second valve port.

In an optional embodiment, the inner diameter of the first valve port is larger than the outer diameter of the spring sleeve and smaller than the diameter of the first gasket.

In an optional embodiment, the guide sleeve has a small-diameter section and a large-diameter section that are sequentially connected, the large-diameter section is connected to the valve seat, and a part of the nut assembly is sleeved outside the small-diameter section.

Applying the technical solution of the present application, the valve core assembly is formed by mounting the screw, gasket, spring and valve stem on the spring sleeve from bottom to top, and the assembled valve core assembly is also mounted on the valve seat from bottom to top Yes, this further simplifies the overall process of the electromagnetic three-way valve, which greatly facilitates the assembly process of the electromagnetic three-way valve, and a guide sleeve is installed on the valve seat, the valve core assembly is inserted into the guide sleeve, and the setting of the guide sleeve is increased The guide stroke is improved, and the coaxiality of the valve core assembly is improved, which is beneficial to ensure the installation accuracy of the valve core assembly and ensure the normal and stable operation of the electromagnetic three-way valve.

Description of the drawings

The drawings of the specification forming a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 shows a schematic diagram of the structure when the first connecting pipe and the second connecting pipe of the electromagnetic three-way valve of the present application are fully opened;

Fig. 2 shows a schematic structural view of the electromagnetic three-way valve in Fig. 1 when the first connecting pipe and the third connecting pipe are fully opened;

Fig. 3 shows a schematic structural diagram of the valve core assembly of the electromagnetic three-way valve in Fig. 1.

Among them, the above drawings include the following reference signs:

10. Guide sleeve; 20, valve seat; 21, first cavity; 22, second cavity; 23, first valve port; 24, second valve port; 30, nut assembly; 40, valve core assembly; 41 , Screw; 42, gasket; 43, spring; 44, valve stem; 45, spring sleeve; 46, the first gasket; 47, the sealing ring; 48, the second gasket; 50, the first connecting pipe; 60, The second connecting pipe; 70, the third connecting pipe; 80, the valve core seat; 90, the rotor assembly; 100, the housing; 110, the fixing frame.

detailed description

It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the application will be described in detail with reference to the drawings and in conjunction with the embodiments.

In order to solve the problem of the complicated assembly process of the three-way solenoid valve in the prior art, the present application provides an assembly method for an electromagnetic three-way valve and an electromagnetic three-way valve.

An electromagnetic three-way valve as shown in Figures 1 to 3, including a valve seat 20, a guide sleeve 10 connected with the valve seat 20, a nut assembly 30 connected with the valve seat 20, and a valve core assembly 40, the valve core assembly 40 The valve core assembly 40 is inserted into the guide sleeve 10 and connected to the nut assembly 30. The valve core assembly 40 includes a spring sleeve 45 inserted in the guide sleeve 10, and a screw 41, a washer 42, and a screw 41 connected to the spring sleeve 45 from top to bottom. The spring 43 and the valve stem 44. Correspondingly, the assembly method includes connecting the guide sleeve 10 with the valve seat 20; connecting the nut assembly 30 with the valve seat 20; assembling the valve core assembly 40, connecting the screw 41, gasket 42, spring 43 and valve of the valve core assembly 40 The rod 44 is sequentially mounted on the spring sleeve 45 from bottom to top, and the valve rod 44 is connected with the spring sleeve 45; the valve core assembly 40 is mounted on the valve seat 20 from below the valve seat 20 upwards, and the valve core assembly 40 After passing through the guide sleeve 10, it is connected with the nut assembly 30.

In this embodiment, the screw 41, the gasket 42, the spring 43, and the valve stem 44 are sequentially mounted on the spring sleeve 45 from bottom to top to form the valve core assembly 40. The assembled valve core assembly 40 is also mounted from bottom to top. On the valve seat 20, the overall process of the electromagnetic three-way valve is further simplified, which greatly facilitates the assembly process of the electromagnetic three-way valve, and a guide sleeve 10 is installed on the valve seat 20, and the valve core assembly 40 is passed through the guide sleeve In 10, the setting of the guide sleeve 10 increases the stroke of the guide, thereby improving the coaxiality of the valve core assembly 40, which is beneficial to ensure the installation accuracy of the valve core assembly 40 and ensure the normal and stable operation of the electromagnetic three-way valve.

It should be noted that the screw 41, washer 42, spring 43, and valve stem 44 are sequentially mounted on the spring sleeve 45 from bottom to top, which means that the screw 41, washer 42, spring 43 and valve stem 44 are assembled from the bottom to the top. The lower end of the spring sleeve 45 is sequentially mounted on the spring sleeve 45 upwards, and finally a structure in which the screw 41, the gasket 42, the spring 43 and the valve stem 44 are arranged in order from top to bottom is formed.

In this embodiment, when the guide sleeve 10 is connected to the valve seat 20, the guide sleeve 10 is pressed against the valve seat 20 from above the valve seat 20, and the guide sleeve 10 can be installed above the valve seat 20. Specifically, a ring groove is provided on the upper surface of the valve seat 20, and an interference fit is adopted between the bottom of the guide sleeve 10 and the ring groove. During installation, the guide sleeve 10 is directly press-fitted into the ring groove, and the guide sleeve 10 and The extrusion fit between the ring grooves can reliably connect the guide sleeve 10 with the valve seat 20.

The outer side of the guide sleeve 10 of this embodiment includes a small-diameter section and a large-diameter section that are sequentially connected from top to bottom, wherein the bottom of the large-diameter section is in interference fit with the ring groove to connect with the valve seat 20, and the nut assembly 30 and When the valve seat 20 is connected, the nut assembly 30 is sleeved over the valve seat 20 on the outside of the small diameter section of the guide sleeve 10 and then connected to the valve seat 20. The nut assembly 30 abuts against the end surface of the small diameter section or is formed with the large diameter section and the small diameter section. The stepped surface abuts, so that the nut assembly 30 abuts the guide sleeve 10, and the guide sleeve 10 is stably fixed on the valve seat 20 by matching the ring groove, and then the nut assembly 30 and the valve seat 20 are welded to each other by laser welding. All together.

It should be noted that most of the parts welded by laser welding in this embodiment are that the two parts are first press-fitted together by means of interference fit, and then welded together by means of laser welding, so as to ensure that the two parts are welded together. The relative stability between the components facilitates the welding operation.

As shown in Figure 3, the top of the spring sleeve 45 has an inner edge extending radially inward, the bottom end of the screw 41 has a protrusion extending radially outward, and the washer 42 and the spring 43 are both contained in the spring sleeve 45. Inside, there is also an interference fit between the top end of the valve stem 44 and the bottom end of the spring sleeve 45. When assembling the valve core assembly 40, first thread the screw 41 on the spring sleeve 45 from bottom to top, and make the screw 41 The protrusion abuts against the inner edge of the spring sleeve 45, so that the upper part of the screw 41 extends out of the spring sleeve 45, so as to facilitate subsequent matching with the nut assembly 30, and then the washer 42 and the spring 43 are sequentially installed from the bottom to the top Inside the spring sleeve 45, and make the two ends of the gasket 42 abut the screw 41 and the spring 43 respectively, and then press the valve stem 44 to the bottom of the spring sleeve 45, and use the laser welding method to connect the valve stem 44 and the spring sleeve 45 Solder together. When the screw 41 moves, the screw 41 drives the valve stem 44 to move by squeezing the washer 42 and the spring 43. When the valve stem 44 cannot continue to move, the screw 41, the washer 42 and the spring 43 are movable relative to the spring sleeve 45. Therefore, the screw 41 has a certain movement margin. The movement of the screw 41 will press the spring 43 through the gasket 42, so that the movement of the screw 41 is converted into the elastic force of the spring 43 and stored, so as to avoid hard contact.

In this embodiment, the valve core assembly 40 further includes a first sealing gasket 46, a sealing ring 47, and a second sealing gasket 48 arranged in order from top to bottom. After the valve stem 44 is connected to the bottom of the spring sleeve 45, the The first sealing gasket 46, the sealing ring 47, and the second sealing gasket 48 are successively penetrated from the bottom end of the valve stem 44 to the lower part of the valve stem 44 from bottom to top, forming a top-down first sealing gasket 46 and a sealing ring 47 And the second gasket 48 are arranged in sequence, and the first gasket 46 and the sealing ring 47 can move freely relative to the valve stem 44, and the second gasket 48 and the valve stem 44 adopt an interference fit The first sealing gasket 46 and the second sealing gasket 48 respectively cooperate with the valve seat 20 to control the on-off and flow distribution of the electromagnetic three-way valve, which realizes that the electromagnetic three-way valve can be multiple The outlet also provides the effect of flow. The specific flow distribution ratio can be distributed in any proportion according to the needs of the system. The sealing ring 47 is mainly used to seal the gap between the first sealing gasket 46 and the second sealing gasket 48. Because the first gasket 46 is movable relative to the valve stem 44, some fluid may overflow from the gap between the first gasket 46 and the valve stem 44, and the sealing ring 47 can block the gap to avoid The overflow of fluid ensures the effect of the electromagnetic three-way valve.

In this embodiment, the electromagnetic three-way valve assembly method further includes welding the first connecting pipe 50 and the second connecting pipe 60 to the valve seat 20 by means of furnace welding before connecting the guide sleeve 10 and the valve seat 20. The side surface, and the first connecting pipe 50 and the second connecting pipe 60 are staggered along the axial direction of the valve core assembly 40. The method for assembling the electromagnetic three-way valve further includes connecting the third connecting pipe 70 to the bottom surface of the valve seat 20 after the valve core assembly 40 is installed on the valve seat 20.

Specifically, the valve seat 20 of this embodiment includes a first cavity 21 and a second cavity 22 spaced from bottom to top, wherein the first connecting pipe 50 communicates with the first cavity 21 and serves as a fluid inlet. The second connecting pipe 60 communicates with the second cavity 22 as a fluid outlet, and the third connecting pipe 70 also communicates with the first cavity 21 as another fluid outlet, where the first cavity 21 and the second cavity 22 are connected A first valve port 23 is opened. The size of the first valve port 23 is larger than the size of the spring sleeve 45 and slightly smaller than the size of the first gasket 46. The first gasket 46 cooperates with the first valve port 23, thereby To control the on-off and opening between the first connecting pipe 50 and the second connecting pipe 60, the first connecting pipe 50 and the second connecting pipe 60 are perpendicular to the axis of the electromagnetic three-way valve, and the third connecting pipe 70 is connected to the electromagnetic three-way valve. The axis of the valve is parallel. The third connecting pipe 70 has a second valve port 24. The opening size of the second valve port 24 is slightly smaller than the size of the second sealing gasket 48. The second sealing gasket 48 is matched with the second valve port 24. Thereby controlling the on-off and opening degree between the first connecting pipe 50 and the third connecting pipe 70. As the valve core assembly 40 moves up and down, the mating relationship between the first gasket 46 and the first valve port 23 and the second sealing The mating relationship between the pad 48 and the second valve port 24 will all change, thereby changing the fluid flow through the second connecting pipe 60 and the third connecting pipe 70 to achieve flow distribution.

In this embodiment, the bottom of the valve seat 20 is open, and its opening is larger, so that the valve core assembly 40 can be installed from the bottom of the valve seat 20. Considering the size of the third connecting pipe 70 is not convenient for opening The port side is blocked, so a valve core seat 80 is also provided. When connecting the third connecting pipe 70, first connect the third connecting pipe 70 to the valve core seat 80 by means of furnace welding, and then connect the valve core seat 80 It is press-fitted to the opening at the bottom of the valve seat 20 by means of interference fit, and then welded to the valve seat 20 by laser welding, so that the opening at the bottom of the valve seat 20 can be blocked by the valve core seat 80 , To ensure that the fluid can only flow out of the second connecting pipe 60 and the third connecting pipe 70, and will not overflow from other parts.

Since the valve core seat 80 is provided in this embodiment, the second gasket 48 is not directly matched with the third connecting pipe 70, but is matched with the valve core seat 80. The second valve port 24 is opened in the valve core. On the seat 80, the second sealing gasket 48 contacts and cooperates with the valve core seat 80 to realize the change of the opening degree of the second valve port 24. Of course, one end of the third connecting pipe 70 extending into the valve core seat 80 can be directly contacted and fitted with the second sealing gasket 48. At this time, the mouth of the third connecting pipe 70 is the second valve port 24.

In this embodiment, the method for assembling the electromagnetic three-way valve further includes, after installing the third connecting pipe 70, arranging the rotor assembly 90 on the outside of the nut assembly 30 from above the nut assembly 30, and aligning the rotor assembly 90 with the screw 41 The top connection. When connecting the rotor assembly 90 to the top of the screw 41, the axial position of the valve core assembly 40 relative to the valve seat 20 and the position of the rotor assembly 90 relative to the nut assembly 30 need to be adjusted to initialize the electromagnetic three-way valve. It should be noted here that the initialization refers to adjusting the spool assembly 40 and the rotor assembly 90 so that the electromagnetic three-way valve meets the factory requirements. The specific initialization conditions may change according to actual needs. The following is an initialization Adjustment example: adjust the axial position of the valve core assembly 40 so that the second gasket 48 on the valve core assembly 40 is in contact with the third connecting pipe 70. At this time, the position of the valve core assembly 40 is the lower limit position, and accordingly , Adjust the position of the rotor assembly 90 relative to the nut assembly 30 through the stop rod on the rotor assembly 90 and the slip ring located on the guide rail of the linear spring of the nut assembly 30, so that the rotor assembly 90 is at the lower limit position relative to the nut assembly 30, That is, the position shown in FIG. 1, in this way, the initialization adjustment is completed, and then the rotor assembly 90 and the valve stem 44 are welded together by laser welding to complete the connection of the rotor assembly 90 and the valve stem 44.

In this embodiment, the method for assembling the electromagnetic three-way valve further includes after installing the rotor assembly 90, covering the housing 100 on the outside of the rotor assembly 90, and welding the housing 100 and the valve seat 20 together by laser welding, and then By welding at least one of the housing 100 and the valve seat 20 and the fixing frame 110 for winding the coil together by laser welding, the entire electromagnetic three-way valve can be assembled.

It should be noted that multiple in the above-mentioned embodiment refers to at least two.

From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

1. The problem of complicated assembly process of the three-way solenoid valve in the prior art is solved;

2. The overall process of the electromagnetic three-way valve is further simplified, which greatly facilitates the assembly process of the electromagnetic three-way valve;

3. The setting of the guide sleeve increases the stroke of the guide, thereby improving the coaxiality of the valve core assembly, which is beneficial to ensure the installation accuracy of the valve core assembly;

4. Realize the effect that the electromagnetic three-way valve can provide flow for multiple outlets at the same time.

Obviously, the embodiments described above are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A method for assembling an electromagnetic three-way valve, which is characterized in that it comprises:

Connect the guide sleeve (10) with the valve seat (20);

Connect the nut assembly (30) with the valve seat (20);

Assemble the valve core assembly (40), and install the screw (41), gasket (42), spring (43) and valve stem (44) of the valve core assembly (40) to the spring sleeve (45) from bottom to top. ), and connect the valve stem (44) with the spring sleeve (45);

Install the valve core assembly (40) on the valve seat (20) from below the valve seat (20) upwards, and make the valve core assembly (40) pass through the guide sleeve (10) Then it is connected with the nut assembly (30).
The electromagnetic three-way valve assembly method according to claim 1, characterized in that, when the guide sleeve (10) is connected to the valve seat (20), the guide sleeve (10) is installed on the Above the valve seat (20).
The electromagnetic three-way valve assembly method according to claim 2, characterized in that the guide sleeve (10) has a small diameter section and a large diameter section connected in sequence, and the large diameter section and the valve seat (20) When connecting the nut assembly (30) and the valve seat (20), the nut assembly (30) is sleeved on the small diameter of the guide sleeve (10) from above the valve seat (20) The outer side of the segment is connected with the valve seat (20), and the nut assembly (30) abuts against the guide sleeve (10).
The electromagnetic three-way valve assembly method according to claim 1, characterized in that, when assembling the valve core assembly (40), the screw (41) is first inserted into the spring sleeve ( 45), and make the protrusion of the screw (41) abut the inner edge of the spring sleeve (45), and then the washer (42) and the spring (43) from bottom to top Into the spring sleeve (45), and make the two ends of the gasket (42) abut the screw (41) and the spring (43) respectively, and then the valve stem (44) ) Is connected to the bottom of the spring sleeve (45).
The electromagnetic three-way valve assembly method according to claim 4, characterized in that, after connecting the valve stem (44) with the bottom of the spring sleeve (45), the first gasket (46) and the sealing The ring (47) and the second gasket (48) are sequentially installed to the lower part of the valve stem (44) from bottom to top, and the second gasket (48) is in interference fit with the valve stem (44) .
The electromagnetic three-way valve assembly method according to claim 1, characterized in that the electromagnetic three-way valve assembly method further comprises before connecting the guide sleeve (10) and the valve seat (20), connecting the first A connecting pipe (50) and a second connecting pipe (60) are connected to the side of the valve seat (20), and the first connecting pipe (50) and the second connecting pipe (60) are along the valve The core assembly (40) is arranged in a misaligned axial direction.
The electromagnetic three-way valve assembly method according to claim 1, wherein the electromagnetic three-way valve assembly method further comprises after installing the valve core assembly (40) on the valve seat (20), The third connecting pipe (70) is connected to the bottom surface of the valve seat (20).
The electromagnetic three-way valve assembly method according to claim 7, characterized in that when connecting the third connecting pipe (70), the third connecting pipe (70) is connected with the valve core seat (80), and the The valve core seat (80) is installed at the opening at the bottom of the valve seat (20) and blocks the opening.
The electromagnetic three-way valve assembly method according to claim 7, characterized in that the electromagnetic three-way valve assembly method further comprises after installing the third connecting pipe (70), sleeve the rotor assembly (90) on The outer side of the nut assembly (30), and the rotor assembly (90) is connected with the top of the screw (41).
The electromagnetic three-way valve assembly method according to claim 9, characterized in that when the rotor assembly (90) is connected to the top of the screw (41), the valve core assembly (40) is adjusted relative to The axial position of the valve seat (20) and the position of the rotor assembly (90) relative to the nut assembly (30) enable the electromagnetic three-way valve to be initialized.
The electromagnetic three-way valve assembly method according to claim 9, characterized in that, the electromagnetic three-way valve assembly method further comprises after installing the rotor assembly (90), covering the housing (100) on the rotor The outer side of the assembly (90), and connect the housing (100) with the valve seat (20), and then connect at least one of the housing (100) and the valve seat (20) with the fixing frame (110) )connection.
An electromagnetic three-way valve, characterized in that it comprises:

Valve seat (20);

A guide sleeve (10) connected with the valve seat (20);

A nut assembly (30) connected with the valve seat (20);

The valve core assembly (40), the valve core assembly (40) is inserted in the guide sleeve (10) and connected with the nut assembly (30), and the valve core assembly (40) includes The spring sleeve (45) in the guide sleeve (10), and the screw (41), gasket (42), spring (43) and valve stem (44) connected to the spring sleeve (45) from top to bottom ).
The electromagnetic three-way valve according to claim 12, characterized in that the valve seat (20) has a first cavity (21) and a second cavity (22) spaced up and down, and the first cavity A first valve port (23) is formed between the body (21) and the second cavity (22), and the first cavity (21) is connected to the first connecting pipe (50) and the third connecting pipe (70). ) Is connected, the second cavity (22) is in communication with the second connecting pipe (60), and a second valve port (24) is formed between the first cavity (21) and the third connecting pipe (70). ), and the valve core assembly (40) controls the opening of the first valve port (23) and the second valve port (24).
The electromagnetic three-way valve according to claim 13, characterized in that the spool assembly (40) further comprises a first sealing gasket (46), a sealing ring (47) and a second sealing which are arranged in order from top to bottom. A gasket (48), the first gasket (46) is matched with the first valve port (23), and the second gasket (48) is matched with the second valve port (24).
The electromagnetic three-way valve according to claim 14, characterized in that the inner diameter of the first valve port (23) is larger than the outer diameter of the spring sleeve (45) and smaller than that of the first sealing gasket (46) diameter.
The electromagnetic three-way valve according to claim 12, characterized in that the guide sleeve (10) has a small diameter section and a large diameter section connected in sequence, and the large diameter section is connected to the valve seat (20), A part of the nut assembly (30) is sleeved outside the small diameter section.