CN114483968B - Pilot valve and main valve body connecting structure and method - Google Patents
Pilot valve and main valve body connecting structure and method Download PDFInfo
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- CN114483968B CN114483968B CN202210163921.4A CN202210163921A CN114483968B CN 114483968 B CN114483968 B CN 114483968B CN 202210163921 A CN202210163921 A CN 202210163921A CN 114483968 B CN114483968 B CN 114483968B
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- valve body
- main valve
- ring
- pilot valve
- core seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
- F16K1/427—Attachment of the seat to the housing by one or more additional fixing elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Valve Housings (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a pilot valve and main valve body connecting structure and a connecting method, comprising a main valve body, a pilot valve part detachably arranged on the main valve body and a rotor assembly arranged on the pilot valve part, wherein a coil assembly is arranged outside the rotor assembly, the pilot valve part comprises a pressure ring and a thin-wall sleeve part which is welded with the pressure ring and extends upwards, the pressure ring is in interference fit with a valve core seat of the pilot valve part to form a whole of the pilot valve part, and the outer diameter of the pressure ring is larger than the outer diameter of the thin-wall sleeve part. After the compression ring and the thin-wall sleeve part are welded into a whole, the whole is pressed into a valve core seat of the pilot valve part, so that the compression ring and the valve core seat are in interference fit to form the whole pilot valve part. Compared with laser welding, the invention is more convenient to install and has higher connection quality and reliability.
Description
Technical Field
The invention relates to air conditioner refrigeration equipment, in particular to a connecting structure and a connecting method of a pilot valve and a main valve body.
Background
The electronic expansion valve is installed between the liquid receiver and the evaporator and is a demarcation point of high pressure and low pressure of the air conditioner refrigerating system. The functions are as follows: throttling and depressurizing the high pressure liquid refrigerant from the receiver, and adjusting and controlling the amount of liquid refrigerant entering the evaporator to accommodate variations in refrigeration compliance. The driving mode of the electronic expansion valve is that the controller calculates the parameters acquired by the sensor, sends out an adjusting instruction to the driving plate, outputs an electric signal to the electronic expansion valve by the driving plate, then drives the rotor part of the electronic expansion valve to rotate through the coil, realizes the up-and-down motion of the valve needle, and adjusts the valve port throttling area of the electronic expansion valve, thereby realizing the control of the refrigerating capacity.
In the prior art, a pilot valve with a large diameter is generally adopted, and an external thread is directly formed on the pilot valve and is in threaded connection with a main valve body. Thus, the pilot valve requires large diameter tooling and wastes significant material costs.
The Chinese patent application with publication number of CN104344050A discloses an electronic expansion valve in 11/2015, which adopts a compression ring and a pilot valve core for brazing, and adopts the compression ring and a sleeve for laser welding, but the laser welding can influence the previous brazing seam, so that the connection quality is reduced, and the reliability is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pilot valve and main valve body connecting structure and a connecting method, which can further improve the installation convenience and the connection reliability of a compression ring while reducing the outer diameter of a valve core seat and reducing the material waste.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a pilot valve and main valve body connection structure, includes the main valve body, detachably install in pilot valve part on the main valve body and install in rotor assembly on the pilot valve part, the rotor assembly is equipped with the coil assembly outward, the pilot valve part includes the clamping ring and welds and upwards extends thin wall sleeve portion with the clamping ring, the clamping ring forms the pilot valve part whole with the case seat interference fit of pilot valve part, the external diameter of clamping ring is greater than thin wall sleeve portion external diameter.
Preferably, the valve core seat is provided with a valve port, a transverse inlet and a longitudinal outlet.
Preferably, the valve core seat is made of aluminum or copper, and the pressing ring is made of steel.
Preferably, the valve core seat is provided with a limit step with a small upper part and a large lower part, and the compression ring and the limit step are propped against each other to form limit.
Preferably, the compression ring is compressed and fixed by a compression nut with external threads, and the external threads of the compression nut are matched and screwed with the main valve body.
Preferably, the press ring is provided with external threads, and the external threads of the press ring are matched with the main valve body for screwing.
Preferably, the valve core seat is provided with external threads, and the external threads of the valve core seat are matched with the main valve body for screwing.
Preferably, a sealing structure is arranged between the valve core seat and the main valve body.
Preferably, a sealing structure is arranged between the pressing ring and the main valve body.
The invention also provides a connection method of the pilot valve and the main valve body, after welding the compression ring and the thin-wall sleeve part into a whole, the whole is pressed into the valve core seat of the pilot valve part, so that the compression ring and the valve core seat are in interference fit to form the whole pilot valve part.
According to the technical scheme, the pressing ring is in interference fit with the valve core seat of the pilot valve to form the whole pilot valve part, so that on one hand, the outer diameter of the valve core seat can be set smaller, and the material waste in the processing process is reduced. In addition, the clamping ring is directly in threaded connection with the main valve body or is compressed and fixed by the compression nut, and compared with the laser welding, the device is more convenient to install, and the connection quality and reliability are higher.
Drawings
The invention is further described with reference to the drawings and detailed description which follow:
FIG. 1a is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 1b is a partially enlarged block diagram of FIG. 1 a;
FIG. 1c is a schematic diagram of a partial improvement of example 1;
FIG. 1d is a schematic diagram showing a partial modification II of the embodiment 1;
FIG. 2a is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 2b is a partially enlarged block diagram of FIG. 2 a;
fig. 2c is a schematic diagram of a partial modification of example 2.
Reference numerals in the drawings: 1. a main valve body; 2. a rotor assembly; 3. a pilot valve member; 4. an inlet channel; 5. an outlet channel; 6. an intermediate channel; 7. a valve seat; 8. a valve core seat; 9. a valve port; 10. a valve needle; 11. a compression nut; 12. a compression ring; 13. a guide sleeve; 14. a screw; 15. a limit step; 16. a screw; 17. a valve needle sleeve; 18. a nut assembly; 19. a connecting sheet; 20. a communication passage; 21. a seal ring; 22. and pressing the flange.
Detailed Description
The following describes embodiments of the invention in detail, but the invention may be practiced in a variety of different ways, as defined and covered by the claims.
In addition, the pilot valve part 3 comprises a pressure ring 12 and a thin-walled sleeve part welded with the pressure ring 12 and extending upwards. Wherein, the clamping ring 12 is in interference fit with the valve core seat 8 and forms the whole of the pilot valve part. On the one hand, the outer diameter of the valve core seat 8 can be set smaller, so that the material waste in the processing process is reduced. Meanwhile, laser welding can be avoided, and the quality and reliability of connection are improved.
Further, the outer diameter of the compression ring 12 is larger than the outer diameter of the thin-walled sleeve portion. Specifically, a pressing flange 22 protruding outwards in the circumferential direction can be arranged at the bottom of the pressing ring, so that the pressing ring 12 can bear larger pressure, and a larger pressing force is formed on the valve core seat 8, so that connection is more reliable.
In order to form a good interference fit between the compression ring 12 and the valve core seat 8, the valve core seat is made of aluminum or copper, and the compression ring is made of steel, so that the interference fit is convenient to seal because the hardness of the aluminum or copper is lower than that of the steel.
In order to improve the quality and reliability of the connection between the compression ring 12 and the valve core seat 8, the valve core seat 8 is provided with a limit step 15 with a small upper part and a large lower part, and the compression ring 12 and the limit step are propped against to form limit.
In this embodiment, the compression ring 12 is tightly fixed by the compression nut 11 with external threads, and the external threads of the compression nut 11 and the main valve body are matched and screwed up to ensure that the compression ring cannot fall off.
The interference fit does not necessarily guarantee a seal, and therefore, as shown in fig. 1b, a sealing structure is provided between the valve seat 8 and the main valve body 1. Specifically, the sealing structure comprises a sealing ring 21, wherein a sealing groove is arranged at the bottom surface of a stepped hole at the upper part of the main valve body, the sealing ring 21 is arranged in the sealing groove, and the sealing is formed by pressing the bottom surface of the upper part of the valve core seat 8. Meanwhile, the upper part of the compression ring 12 is compressed by a compression nut 11, a gap is arranged between a compression flange 22 at the bottom of the compression ring 12 and the side surface of the step hole at the upper part of the main valve body, and the compression nut is provided with a cylindrical protruding part and is compressed in the gap.
As shown in fig. 1c, a sealing structure is provided between the pressure ring 12 and the main valve body 1. The sealing structure between the pressure ring 12 and the main valve body 1 comprises a sealing ring 21, wherein the bottom surface of the step hole at the upper part of the main valve body is provided with a sealing groove, and the sealing ring 21 is arranged in the sealing groove and is tightly pressed by the bottom surface of the pressure ring 12 to form a seal. The pressing flange 22 at the bottom of the pressing ring 12 is connected with the side surface of the stepped hole at the upper part of the main valve body, and the pressing nut 11 is directly pressed on the whole pressing flange 22. This is because the interference fit between the pressure ring 12 and the valve core seat 8 does not necessarily ensure sealing, so the sealing problem is further solved by adopting a sealing structure.
As shown in fig. 1d, a gap is provided between the pressing flange 22 at the bottom of the pressing ring 12 and the side surface of the stepped hole at the upper part of the main valve body, and the pressing nut is provided with a cylindrical protruding part to be pressed in the gap. The difference from the structure shown in fig. 1b is that a seal groove is provided on the bottom surface of the pressure ring, and a seal ring 21 is provided in the seal groove.
In this embodiment, the compression nut 11 and the compression ring 12 cooperate to fix the valve core seat 8, so that the overall processing difficulty of the compression nut 11 and the compression ring 12 is simplified, and the processing efficiency is improved. Wherein, the connection method of the pilot valve part 3 and the main valve body 1 is as follows: after the press ring 12 and the thin-wall sleeve part are welded into a whole, the whole is pressed into the valve core seat 8 of the pilot valve part, so that the press ring 12 and the valve core seat 8 are in interference fit to form the whole pilot valve part.
The electronic expansion valve of the vehicle air conditioning system further comprises a nut component 18, the nut component 18 and the thin-wall sleeve part are fixedly connected to the valve core seat 8, the rotor assembly 2 is in running fit with the nut component 18, and the rotor assembly 2 is rotatably arranged in the thin-wall sleeve part relative to the nut component 18. The nut component 18 is fixedly connected with the valve core seat 8 through a connecting sheet 19. The nut component 18 and the valve core seat 8 can be stably connected through the connecting sheet 19, so that the nut component 18 can not rotate relative to the valve core seat 8, and when the rotor assembly 2 rotates relative to the nut component 18, the rotation between the rotor assembly and the nut component 18 can be converted into the axial movement of the rotor assembly 2, and the size of the opening area between the valve needle 10 and the valve port 9 can be adjusted. The valve needle assembly slides in the pilot valve inner hole, and the nut inner hole is sleeved with the pilot valve, so that high-precision guiding is realized. Of course, the valve needle assembly can also slide in the inner hole of the nut, and then the nut is sleeved with the pilot valve, so that high-precision guiding is realized.
Wherein, the connection piece 19 and the nut are integrally injection molded, a positioning platform for positioning the connection piece is arranged on the valve core seat 8, and the screw 14 passes through the connection piece 19 to fix the nut on the positioning platform of the valve core seat 8. Because the nut is directly fixed on the valve core seat by adopting the screw 14, the complex welding process is avoided, and the quality and the reliability of installation are improved.
According to the electronic expansion valve of the vehicle air conditioning system, the pilot valve part 3 comprises the valve seat 7 and the valve core seat 8 which are fixedly connected together after being formed separately, and the valve seat 7 and the valve core seat 8 can be processed separately, so that the forming difficulty of the valve seat 7 and the valve core seat 8 can be reduced. The valve port is made of steel, and the valve core seat is made of aluminum or copper.
In order to facilitate the positioning of the nut, a guide part is arranged on the valve core seat 8, and an inner hole at the bottom of the nut is sleeved on the guide part. In this embodiment, the guide portion is a guide sleeve 13 integrally provided with the valve core holder 8. The valve core seat 8 upwards extends to form a guide sleeve 13, and guide fit is formed between the guide sleeve 13 and the nut, so that the coaxiality of fit between the nut component 18 and the valve core seat 8 can be ensured, the guide precision of the valve needle 10 during movement is improved, and the deviation phenomenon in the movement process of the valve needle 10 is prevented.
The rotor assembly 2 further comprises a screw 16 and a needle cover 17, the needle 10 is movably arranged in the needle cover 17 and extends out of one end of the needle cover 17, and the screw 16 extends into the needle cover 17 from the other end of the needle cover 17 and is in driving connection with the needle 10. The cross-sectional area of the small diameter section of the valve needle 10 is less than or equal to 5 times the equivalent area of the valve port 9. Preferably, the cross section area of the small-diameter section of the valve needle 10 is smaller than or equal to 3 times of the equivalent area of the valve port 9, so that the turbulence area can be reduced, the influence of turbulence on the valve needle 10 is not relieved, and the stability and reliability of the valve needle 10 in working are improved.
The valve seat 7 is inversely arranged on the valve core seat 8 from bottom to top and is fixed by laser or argon arc welding or interference fit.
The valve core seat is provided with external threads, and the external threads of the valve core seat are matched with the main valve body for screwing.
As shown in fig. 2b, the sealing structure between the pressure ring 12 and the main valve body 1 comprises a sealing ring 21, wherein the bottom surface of the stepped hole at the upper part of the main valve body is provided with a sealing groove, and the sealing ring 21 is arranged in the sealing groove and is pressed by the bottom surface of the pressure ring 12 to form a seal.
As shown in fig. 2c, the sealing ring 21 may also be disposed on a side surface of the pressure ring 12, and a sealing groove is disposed on a side surface of the stepped hole on the upper portion of the main valve body, and the sealing ring 21 is disposed in the sealing groove and is pressed by the side surface of the pressure ring. Therefore, the outer diameter of the compression ring can be smaller, and compared with the sealing ring arranged on the bottom surface, the compression ring can save materials.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a pilot valve and main valve body connection structure, includes main valve body (1), detachably install in pilot valve part (3) on main valve body (1) and install in rotor assembly (2) on pilot valve part (3), rotor assembly (2) are the coil assembly outward, pilot valve part (3) include clamping ring (12) and with clamping ring (12) welding and upwards extending's thin wall sleeve portion, its characterized in that: the pressing ring (12) is in interference fit with the valve core seat (8) of the pilot valve part (3) and forms a whole of the pilot valve part (3), and the outer diameter of the pressing ring (12) is larger than that of the thin-wall sleeve part;
the compression ring (12) is fixed by a compression nut (11) with external threads, and the external threads of the compression nut (11) are matched with the main valve body (1) for screwing;
a sealing structure is arranged between the valve core seat (8) and the main valve body (1);
or a sealing structure is arranged between the compression ring (12) and the main valve body (1).
2. The pilot valve and main valve body connection of claim 1, wherein: the sealing structure is arranged between the valve core seat (8) and the main valve body (1), the sealing structure comprises a sealing ring (21), a sealing groove is arranged on the bottom surface of a stepped hole on the upper portion of the main valve body (1), and the sealing ring (21) is arranged in the sealing groove and is tightly pressed by the bottom surface on the upper portion of the valve core seat (8) to form a seal.
3. The pilot valve and main valve body connection of claim 1, wherein: the sealing structure is arranged between the pressure ring (12) and the main valve body (1), the sealing structure comprises a sealing ring (21), a sealing groove is formed in the bottom surface of the pressure ring (12), and the sealing ring (21) is arranged in the sealing groove.
4. A pilot valve and main valve body connection as claimed in claim 2 or 3, wherein: the utility model discloses a main valve body, including main valve body (1) upper portion step hole, clamping ring (12) bottom is equipped with circumference outside convex pressfitting flange (22), the upper portion of clamping ring (12) by gland nut (11) compress tightly, be equipped with the clearance between pressfitting flange (22) with main valve body (1) upper portion step hole side, gland nut (11) are equipped with tubular protruding portion and pressfitting in the clearance.
5. The pilot valve and main valve body connection of claim 1, wherein: the sealing structure is arranged between the pressing ring (12) and the main valve body (1), the sealing structure comprises a sealing ring (21), a sealing groove is arranged on the bottom surface of a step hole on the upper portion of the main valve body (1), and the sealing ring (21) is arranged in the sealing groove and is pressed by the bottom surface of the pressing ring (12) to form sealing.
6. The pilot valve and main valve body connection of claim 5, wherein: the bottom of the compression ring (12) is provided with a pressing flange (22) protruding outwards in the circumferential direction, the pressing flange (22) is connected with the side face of the step hole at the upper part of the main valve body (1), and the compression nut (11) is pressed on the pressing flange (22).
7. The pilot valve and main valve body connection of claim 1, wherein: the valve core seat (8) is provided with a valve port (9), a transverse inlet and a longitudinal outlet.
8. The pilot valve and main valve body connection of claim 1, wherein: the valve core seat (8) is made of aluminum or copper, and the compression ring (12) is made of steel.
9. The pilot valve and main valve body connection of claim 1, wherein: the valve core seat (8) is provided with a limit step (15) with a small upper part and a large lower part, and the compression ring (12) is propped against the limit step (15) to form limit.
10. A pilot valve and main valve body connection method for use in a pilot valve and main valve body connection structure as claimed in any one of claims 1 to 9, characterized in that: after the compression ring (12) and the thin-wall sleeve part are welded into a whole, the whole valve core seat (8) of the pilot valve part (3) is pressed in, so that the compression ring (12) and the valve core seat (8) are in interference fit to form the whole pilot valve part (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210163921.4A CN114483968B (en) | 2016-12-13 | 2016-12-13 | Pilot valve and main valve body connecting structure and method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210163921.4A CN114483968B (en) | 2016-12-13 | 2016-12-13 | Pilot valve and main valve body connecting structure and method |
| CN201611146582.XA CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611146582.XA Division CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483968A CN114483968A (en) | 2022-05-13 |
| CN114483968B true CN114483968B (en) | 2023-06-06 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611146582.XA Active CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
| CN202210163921.4A Active CN114483968B (en) | 2016-12-13 | 2016-12-13 | Pilot valve and main valve body connecting structure and method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611146582.XA Active CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
Country Status (1)
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| CN (2) | CN107061762B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538772B (en) * | 2017-09-21 | 2022-09-20 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN109751428B (en) * | 2017-11-07 | 2022-04-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN112303245B (en) * | 2019-07-29 | 2023-04-18 | 浙江三花商用制冷有限公司 | Flow control valve |
| DE102020129285A1 (en) * | 2019-12-04 | 2021-06-10 | ECO Holding 1 GmbH | Expansion valve |
| CN217736284U (en) * | 2022-06-16 | 2022-11-04 | 盾安汽车热管理科技有限公司 | Electronic expansion valve |
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| JP2006097947A (en) * | 2004-09-29 | 2006-04-13 | Fuji Koki Corp | Motor operated valve |
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| CN106151552A (en) * | 2015-04-24 | 2016-11-23 | 杭州三花研究院有限公司 | Electric expansion valve and refrigerant system thereof |
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- 2016-12-13 CN CN202210163921.4A patent/CN114483968B/en active Active
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| CN103261765A (en) * | 2010-10-15 | 2013-08-21 | 浙江三花股份有限公司 | Electrically-operated valve |
| CN102996883A (en) * | 2011-09-15 | 2013-03-27 | 浙江三花股份有限公司 | Solenoid valve |
| JP2013164125A (en) * | 2012-02-10 | 2013-08-22 | Saginomiya Seisakusho Inc | Expansion valve |
| CN104344050A (en) * | 2013-07-25 | 2015-02-11 | 浙江三花汽车零部件有限公司 | Electronic expansion valve |
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| CN204004479U (en) * | 2013-12-13 | 2014-12-10 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
| CN106151554A (en) * | 2015-04-24 | 2016-11-23 | 杭州三花研究院有限公司 | Electric expansion valve, the manufacture method of electric expansion valve and refrigerant system |
| CN106151552A (en) * | 2015-04-24 | 2016-11-23 | 杭州三花研究院有限公司 | Electric expansion valve and refrigerant system thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107061762B (en) | 2022-03-25 |
| CN114483968A (en) | 2022-05-13 |
| CN107061762A (en) | 2017-08-18 |
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