CN114483968A - Connecting structure and method for pilot valve and main valve body - Google Patents
Connecting structure and method for pilot valve and main valve body Download PDFInfo
- Publication number
- CN114483968A CN114483968A CN202210163921.4A CN202210163921A CN114483968A CN 114483968 A CN114483968 A CN 114483968A CN 202210163921 A CN202210163921 A CN 202210163921A CN 114483968 A CN114483968 A CN 114483968A
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- valve body
- ring
- main valve
- pilot valve
- sealing
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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 connecting structure and a connecting method of a pilot valve and a main valve body, and the connecting structure comprises 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 press ring and a thin-wall sleeve part welded with the press ring and extending upwards, the press ring is in interference fit with a valve core seat of the pilot valve part to form a whole pilot valve part, and the outer diameter of the press ring is larger than that of the thin-wall sleeve part. After the pressure 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 pressure 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-conditioning 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 arranged between the liquid receiver and the evaporator and is a dividing point of high pressure and low pressure of the air-conditioning refrigeration system. The function is as follows: the high pressure liquid refrigerant from the receiver is throttled to reduce pressure and the amount of liquid refrigerant entering the evaporator is regulated and controlled to accommodate changes in refrigeration compliance. The driving mode of the electronic expansion valve is that the controller calculates parameters acquired by the sensor, sends a regulating instruction to the drive plate, outputs an electric signal to the electronic expansion valve by the drive plate, and then drives the rotor component of the electronic expansion valve to rotate through the coil, so that the valve needle moves up and down, the throttling area of the valve port of the electronic expansion valve is regulated, and the control of the refrigerating capacity is realized.
In the prior art, a pilot valve with a large diameter is generally adopted, and the pilot valve directly forms an external thread and is in threaded connection with a main valve body. Thus, the pilot valve needs to be machined in a large-diameter mode, and material waste is serious in cost.
Chinese patent application publication No. CN104344050A discloses an electronic expansion valve in 11/2/2015, which is brazed with a guide valve core by using a pressing ring, and the pressing ring and a sleeve are laser welded, but the laser welding affects the previous brazing seam, which causes the connection quality to be reduced and the reliability to be reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a connecting structure and a connecting method of a pilot valve and a main valve body, which can further improve the installation convenience and the connection reliability of a pressure ring while reducing the outer diameter of a valve core seat and reducing material waste.
In order to solve the technical problems, the invention adopts the following technical scheme: a connecting structure of a pilot valve and a main valve body comprises a main valve body, a pilot valve part detachably mounted on the main valve body and a rotor assembly mounted on the pilot valve part, wherein a coil assembly is arranged outside the rotor assembly, the pilot valve part comprises a press ring and a thin-wall sleeve part welded with the press ring and extending upwards, the press ring is in interference fit with a valve core seat of the pilot valve part to form a whole pilot valve part, and the outer diameter of the press ring is larger than that of the thin-wall sleeve part.
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 pressure ring is made of steel.
Preferably, the valve core seat is provided with a limiting step with a small upper part and a large lower part, and the pressing ring is abutted against the limiting step to form limiting.
Preferably, the compression ring is compressed and fixed by a compression nut with an external thread, and the external thread of the compression nut is matched and screwed with the main valve body.
Preferably, the pressing ring is provided with an external thread, and the external thread of the pressing ring is matched and screwed with the main valve body.
Preferably, the valve core seat is provided with an external thread, and the external thread of the valve core seat is matched and screwed with the main valve body.
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 method for connecting the pilot valve and the main valve body, after the pressure ring and the thin-wall sleeve part are welded into a whole, the pressure ring and the thin-wall sleeve part are integrally pressed into the valve core seat of the pilot valve part, so that the pressure ring and the valve core seat are in interference fit to form the whole pilot valve part.
According to the technical scheme, the press 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 smaller, and material waste in the machining process is reduced. In addition, the clamping ring is directly connected with the main valve body in a threaded mode or is compressed and fixed through the compression nut, and compared with the laser welding mode, the clamping ring is convenient to install, and the connection quality and the reliability are high.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
FIG. 1a is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 1b is a partially enlarged structural view of FIG. 1 a;
FIG. 1c is a schematic diagram of a first partial modification of embodiment 1;
FIG. 1d is a schematic diagram of a second embodiment of the present invention;
FIG. 2a is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 2b is a partially enlarged structural view of FIG. 2 a;
fig. 2c is a schematic view of a partial modification of embodiment 2.
Reference numbers in the figures: 1. a main valve body; 2. a rotor assembly; 3. a pilot valve member; 4. an inlet channel; 5. an outlet channel; 6. a middle channel; 7. a valve seat; 8. a valve core seat; 9. a valve port; 10. a valve needle; 11. a compression nut; 12. pressing a ring; 13. a guide sleeve; 14. a screw; 15. a limiting step; 16. a screw; 17. a valve needle sleeve; 18. a nut assembly; 19. connecting sheets; 20. a communication channel; 21. a seal ring; 22. and pressing the flanges.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
In addition, the pilot valve member 3 further includes a press ring 12 and a thin-walled sleeve portion welded to the press ring 12 and extending upward. Wherein the pressure ring 12 is in interference fit with the valve core seat 8 and forms the pilot valve part as a whole. On the one hand, the outer diameter of the valve core seat 8 can be set smaller, so that material waste during machining is reduced. Meanwhile, laser welding can be avoided, and the quality and the reliability of connection are improved.
Further, the outer diameter of the pressing ring 12 is larger than that of the thin-walled sleeve portion. Specifically, the pressing flange 22 protruding outward in the circumferential direction may be provided at the bottom of the pressing ring, so that the pressing ring 12 can bear a large pressure, and a large pressing force is formed on the valve core seat 8, thereby making the connection more reliable.
In order to enable the pressure ring 12 and the valve core seat 8 to form good interference fit, the valve core seat is made of aluminum or copper, the pressure ring is made of steel, and the aluminum or copper is lower in hardness than the steel, so that the pressure ring is convenient to seal in interference fit.
In order to improve the quality and reliability of the connection between the pressure ring 12 and the valve core seat 8, the valve core seat 8 is provided with a limiting step 15 which is small at the top and big at the bottom, and the pressure ring 12 is abutted against the limiting step to form limiting.
In this embodiment, the pressing ring 12 is pressed and fixed by a pressing nut 11 having an external thread, and the external thread of the pressing nut 11 is screwed to the main valve body in a fitting manner, so as to ensure that the pressing ring does not fall off.
Interference fit does not necessarily ensure sealing, and therefore, as shown in fig. 1b, a sealing structure is provided between the valve core seat 8 and the main valve body 1. Specifically, the sealing structure comprises a sealing ring 21, a sealing groove is formed in the bottom surface of a step hole in the upper portion of the main valve body, and the sealing ring 21 is arranged in the sealing groove and is pressed by the bottom surface of the upper portion of the valve core seat 8 to form sealing. Meanwhile, the upper part of the compression ring 12 is compressed by the compression nut 11, a gap is arranged between the pressing 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 pressed 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 pressing ring 12 and the main valve body 1 comprises a sealing ring 21, a sealing groove is formed in the bottom surface of a step hole in the upper portion of the main valve body, 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. Wherein, the pressfitting flange 22 of the bottom of the clamping ring 12 is connected with the side of the step hole at the upper part of the main valve body, and the gland nut 11 is directly pressfitting on the whole pressfitting flange 22. This is because the interference fit between the pressure ring 12 and the valve cartridge 8 does not necessarily ensure a seal, and therefore a sealing structure is further employed to address the sealing problem.
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 step hole at the upper part of the main valve body, and the pressing nut is provided with a cylindrical protrusion which is pressed in the gap. The difference from the configuration shown in fig. 1b is that a seal groove is provided on the bottom surface of the pressure ring, and the seal ring 21 is provided in the seal groove.
In this embodiment, the compression nut 11 and the compression ring 12 are matched to fix the valve core seat 8, so that the processing difficulty of the compression nut 11 and the compression ring 12 are simplified, and the processing efficiency is improved. The connection method of the pilot valve part 3 and the main valve body 1 comprises the following steps: 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 also comprises a nut component 18, wherein the nut component 18 and the thin-wall sleeve part are both fixedly connected on 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 assembly 18 and the valve core seat 8 are fixedly connected through a connecting piece 19. The connecting piece 19 can form stable connection between the nut component 18 and the valve core seat 8, so that the nut component 18 is ensured not to rotate relative to the valve core seat 8, when the rotor assembly 2 rotates relative to the nut component 18, the rotation between the nut component 18 and the rotor assembly can be converted into axial movement of the rotor assembly 2, and the adjustment of the opening area between the valve needle 10 and the valve port 9 is realized. The valve needle component slides in the inner hole of the pilot valve, and the inner hole of the nut 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 to realize high-precision guiding.
The connecting sheet 19 and the nut are integrally formed by injection molding, a positioning platform for positioning the connecting sheet is arranged on the valve core seat 8, and the screw 14 penetrates through the connecting sheet 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 the screw 14, the complex welding procedure is avoided, and the quality and the reliability of installation are improved.
The electronic expansion valve of the vehicle air conditioning system of the invention, 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, thereby reducing the forming difficulty of the valve seat 7 and the valve core seat 8. 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, the valve core seat 8 is provided with a guide portion, and an inner hole at the bottom of the nut is sleeved on the guide portion. In this embodiment, the guide portion is a guide sleeve 13 provided integrally with the valve body case 8. The valve core seat 8 extends upwards to form the guide sleeve 13, and the guide sleeve 13 and the nut form guide fit, so that the coaxiality of the nut assembly 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 of the valve needle 10 during movement is prevented.
The rotor assembly 2 further comprises a screw 16 and a needle sleeve 17, the needle 10 is movably arranged in the needle sleeve 17 and extends out from one end of the needle sleeve 17, and the screw 16 extends into the needle sleeve 17 from the other end of the needle sleeve 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-sectional area of the small diameter section of the valve needle 10 is less than or equal to 3 times of the equivalent area of the valve port 9, so that the turbulent flow area can be reduced, the influence of turbulent flow on the valve needle 10 is surprisingly not reduced, and the stability and the reliability of the valve needle 10 during operation are improved.
The valve seat 7 is inversely arranged on the valve core seat 8 from bottom to top and is fixed through laser or argon arc welding or interference fit.
The valve core seat is provided with an external thread, and the external thread of the valve core seat is matched and screwed with the main valve body.
As shown in fig. 2b, the sealing structure between the pressing ring 12 and the main valve body 1 includes a sealing ring 21, a sealing groove is provided on the bottom surface of the step hole on the upper portion of the main valve body, the sealing ring 21 is provided in the sealing groove, and the bottom surface of the pressing ring 12 is pressed to form a seal.
As shown in fig. 2c, the sealing ring 21 may be disposed on the side surface of the pressing ring 12, a sealing groove is disposed on the 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 pressed by the side surface of the pressing ring. Therefore, the outer diameter of the pressing ring can be smaller, and compared with the sealing ring arranged on the bottom surface, materials can be saved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pilot valve and main valve body connecting structure comprises a main valve body (1), a pilot valve part (3) detachably mounted on the main valve body (1) and a rotor assembly (2) mounted on the pilot valve part (3), wherein a coil assembly is arranged outside the rotor assembly (2), the pilot valve part (3) comprises a pressing ring (12) and a thin-wall sleeve part welded with the pressing ring (12) and extending upwards, and the pilot valve and main valve body connecting structure is characterized in that: the press ring (12) is in interference fit with a valve core seat (8) of the pilot valve part (3) to form the whole pilot valve part (3), and the outer diameter of the press ring (12) is larger than that of the thin-wall sleeve part;
the compression ring (12) is compressed and fixed by a compression nut (11) with an external thread, and the external thread of the compression nut (11) is matched and screwed with the main valve body (1);
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. A pilot valve and main valve body connecting structure according to 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 formed in the bottom surface of a step hole in the upper portion of the main valve body (1), and the sealing ring (21) is arranged in the sealing groove and is compressed to form sealing by the bottom surface of the upper portion of the valve core seat (8).
3. A pilot valve and main valve body connecting structure according to 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 formed in the bottom surface of the pressing ring (12), and the sealing ring (21) is arranged in the sealing groove.
4. A pilot valve and main valve body connecting structure according to claim 2 or 3, wherein: pressing ring (12) bottom is equipped with to the convex pressfitting flange (22) in circumference outside, the upper portion of pressing ring (12) by gland nut (11) compress tightly, pressfitting flange (22) with be equipped with the clearance between the main valve body (1) upper portion step hole side, gland nut (11) are equipped with the tube-shape protruding portion and the pressfitting is in the clearance.
5. A pilot valve and main valve body connecting structure according to claim 1, wherein: the sealing structure is arranged between the compression 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 in the upper portion of the main valve body (1), the sealing ring (21) is arranged in the sealing groove, and the bottom surface of the compression ring (12) is compressed to form sealing.
6. A pilot valve and main valve body connection according to claim 5, wherein: the pressing ring (12) is provided with a pressing flange (22) protruding towards the outer side in the circumferential direction at the bottom, the pressing flange (22) is connected with the side face of a step hole in the upper portion of the main valve body (1), and the pressing nut (11) is pressed on the pressing flange (22).
7. A pilot valve and main valve body connecting structure according to claim 1, wherein: the valve core seat (8) is provided with a valve port (9), a transverse inlet and a longitudinal outlet.
8. A pilot valve and main valve body connecting structure according to claim 1, wherein: the valve core seat (8) is made of aluminum or copper, and the pressure ring (12) is made of steel.
9. A pilot valve and main valve body connecting structure according to claim 1, wherein: the valve core seat (8) is provided with a limiting step (15) which is small in upper part and large in lower part, and the pressing ring (12) is abutted against the limiting step (15) to form limiting.
10. A pilot valve and main valve body connecting method applied to the pilot valve and main valve body connecting structure according to any one of claims 1 to 9, characterized in that: and after the pressing ring (12) and the thin-wall sleeve part are welded into a whole, the pressing ring and the thin-wall sleeve part are integrally pressed into the valve core seat (8) of the pilot valve part (3), so that the pressing 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 |
|---|---|---|---|
| CN201611146582.XA CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
| CN202210163921.4A CN114483968B (en) | 2016-12-13 | 2016-12-13 | Pilot valve and main valve body connecting structure and method |
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 true CN114483968A (en) | 2022-05-13 |
| CN114483968B CN114483968B (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210163921.4A Active CN114483968B (en) | 2016-12-13 | 2016-12-13 | Pilot valve and main valve body connecting structure and method |
| CN201611146582.XA Active CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201611146582.XA Active CN107061762B (en) | 2016-12-13 | 2016-12-13 | Connecting structure and method for pilot valve and main valve body |
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| CN (2) | CN114483968B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241114A1 (en) * | 2022-06-16 | 2023-12-21 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
Families Citing this family (4)
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN205715985U (en) * | 2016-05-06 | 2016-11-23 | 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 |
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2016
- 2016-12-13 CN CN202210163921.4A patent/CN114483968B/en active Active
- 2016-12-13 CN CN201611146582.XA patent/CN107061762B/en active Active
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| JP2006097947A (en) * | 2004-09-29 | 2006-04-13 | Fuji Koki Corp | Motor operated valve |
| 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 |
| CN104676067A (en) * | 2013-11-29 | 2015-06-03 | 株式会社Tgk | Stepping motor driven control valve |
| 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 |
| 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 |
| 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 |
| CN105041630A (en) * | 2015-07-08 | 2015-11-11 | 浙江三花汽车零部件有限公司 | Electromagnetic control valve for variable displacement compressor |
| CN205715985U (en) * | 2016-05-06 | 2016-11-23 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
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| WO2023241114A1 (en) * | 2022-06-16 | 2023-12-21 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107061762A (en) | 2017-08-18 |
| CN107061762B (en) | 2022-03-25 |
| CN114483968B (en) | 2023-06-06 |
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