CN116697053A - Flow regulating assembly and electronic expansion valve - Google Patents

Flow regulating assembly and electronic expansion valve Download PDF

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Publication number
CN116697053A
CN116697053A CN202210182091.XA CN202210182091A CN116697053A CN 116697053 A CN116697053 A CN 116697053A CN 202210182091 A CN202210182091 A CN 202210182091A CN 116697053 A CN116697053 A CN 116697053A
Authority
CN
China
Prior art keywords
flow
sealing
valve head
regulating
regulating assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210182091.XA
Other languages
Chinese (zh)
Inventor
贺宇辰
徐冠军
康志军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dunan Artificial Environment Co Ltd
Original Assignee
Zhejiang Dunan Artificial Environment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Dunan Artificial Environment Co Ltd filed Critical Zhejiang Dunan Artificial Environment Co Ltd
Priority to CN202210182091.XA priority Critical patent/CN116697053A/en
Publication of CN116697053A publication Critical patent/CN116697053A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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
    • F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
    • 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)
  • Lift Valve (AREA)

Abstract

The application relates to a flow regulating assembly and an electronic expansion valve, wherein the flow regulating assembly comprises a valve head and a sealing gasket, the valve head is provided with a sealing surface and a regulating surface, and the sealing gasket is provided with a sealing matching surface and a diversion surface; along with the movement of the valve head relative to the sealing gasket, the valve head can drive the adjusting surface to extend into the channel, and the flow area between the adjusting surface and the sealing matching surface is adjusted so as to control the flow of medium in the channel; and under the drive of valve head, the valve head can seal off the passageway with the butt cooperation between sealing surface and the sealing mating surface, and the water conservancy diversion face can lead the medium between regulation face and the sealing mating surface of passing through. The application can realize the flow regulation of the flow regulating component in small flow by utilizing the sealing between the valve head and the sealing gasket and controlling the flow area between the sealing matching surface and the regulating surface, and meanwhile, the flow guiding surface can play a role in guiding flow and reducing flow resistance, and particularly reduces flow resistance in the maximum opening.

Description

Flow regulating assembly and electronic expansion valve
Technical Field
The application belongs to the technical field of flow control, and particularly relates to a flow regulating assembly and an electronic expansion valve.
Background
In the electronic expansion valve, the valve head changes the flow area by changing the relative position of the valve head and the flow adjusting surface on the inner wall of the valve port, thereby realizing flow adjustment. The flow characteristic curve is a relationship between the flow rate of the electronic expansion valve and the valve port opening (i.e., the moving distance of the valve head). In the actual use process, the requirements of different systems and using conditions on flow regulation are different.
At present, the existing electronic expansion valve generally adopts a flare line sealing structure to realize flow blocking, and particularly adopts a mode that the cone angle of a valve port on a valve head is propped against a sealing gasket. However, the sealing structure has poor working reliability, the sealing gasket is affected by temperature, and has larger deformation compared with the valve head, the valve head is possibly locked from high temperature to low temperature, the valve opening resistance is increased, the flow curve deviation is possibly caused, and the sealing structure cannot realize the flow regulation of the electronic expansion valve in the case of small flow.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a flow regulating assembly and an electronic expansion valve that solve the above-mentioned problems.
The flow regulating assembly comprises a valve head and a sealing gasket, wherein a channel is formed in the sealing gasket, and the valve head can move relative to the sealing gasket so as to regulate the medium flow of the channel;
the valve head is provided with a sealing surface and an adjusting surface, and the sealing gasket is provided with a sealing matching surface and a diversion surface;
along with the movement of the valve head relative to the sealing gasket, the valve head can drive the adjusting surface to extend into the channel and adjust the flow area between the adjusting surface and the sealing matching surface so as to control the flow of medium in the channel; and under the drive of valve head, the valve head can with sealing surface with sealing cooperation between the face seal the passageway of sealing, the water conservancy diversion face can be to the route the regulating surface with the medium between the sealing cooperation face is guided.
It can be appreciated that through the above-mentioned structure setting of sealing face, water conservancy diversion face, sealed mating surface and regulation face for this flow control subassembly during operation can utilize the butt between sealing face and the sealed mating surface to realize the face and the face between this valve head and the sealed pad, and can utilize the distance between control sealed mating surface and the regulation face, realize the flow control when this flow control subassembly low discharge, and this simultaneously, the water conservancy diversion face can play the water conservancy diversion and reduce the effect of flow resistance, especially reduces the circulation resistance when maximum aperture.
In one embodiment, the flow guiding surface is arranged on the periphery of the adjusting surface along the axial direction of the sealing gasket.
It can be understood that the diversion surface is arranged on the periphery of the adjusting surface, so that the diversion surface is specifically arranged on the sealing gasket and the position of the adjusting surface on the valve head, and the diversion surface is ensured to play a role in diversion on the medium entering between the adjusting surface and the sealing matching surface.
In one embodiment, the guide surface and the adjusting surface are both provided with an inclined surface structure, and an inclination angle of the guide surface is larger than an inclination angle of the adjusting surface with respect to an axis of the sealing gasket.
It can be understood that through the above-mentioned structural arrangement of the flow guiding surface and the adjusting surface, the structure arrangement of the adjusting surface on the valve head and the flow guiding surface on the sealing gasket is realized in particular, so as to meet the use requirements that the adjusting surface can be matched with the sealing matching surface on the sealing gasket and realize flow regulation in small flow, and the flow guiding surface can play a role in guiding and reducing flow resistance.
In one embodiment, the adjusting surface comprises a plurality of adjusting segment surfaces, and the adjusting segment surfaces are sequentially connected.
It will be appreciated that one embodiment of the conditioning surface is achieved by the structural arrangement of the plurality of conditioning segment surfaces described above.
In one embodiment, the sealing surface and the sealing mating surface are both provided in a planar structure.
It will be appreciated that by the above-described structural arrangement, the structural arrangement of the sealing surface and the sealing engagement surface is embodied.
In one embodiment, the flow guiding surface is provided in a planar configuration.
It will be appreciated that the flow-guiding surface is provided in a planar configuration, embodying an embodiment of the flow-guiding surface.
In one embodiment, the flow guiding surface is arranged on the periphery of the sealing matching surface.
It can be appreciated that by the above-described structural arrangement, the positional relationship of the flow guiding surface and the seal mating surface on the gasket is specifically realized.
In one embodiment, the sealing gasket is provided with a clearance gap, and the clearance gap is arranged at a position where the sealing matching surface is connected with the channel wall of the channel.
It can be understood that through the structural arrangement of the clearance gap, the space between the upper adjusting surface of the valve head and the sealing gasket can be increased, so that the medium can pass through the space between the adjusting surface and the sealing matching surface and enter the channel under the flow guide of the flow guide surface, and the phenomenon that burrs or flanging are generated during processing is avoided.
In one embodiment, the valve head is provided with a clearance groove, and the clearance groove is arranged at a position between the sealing surface and the adjusting surface.
It can be understood that through the structural arrangement of the clearance groove, the surface-to-surface sealing can be realized, and the effect of the surface-to-surface sealing is avoided when the valve head is turned over or burrs exist in the machining process of the valve head.
The application further discloses an electronic expansion valve, which comprises a valve body and a flow regulating assembly, wherein the flow regulating assembly is arranged on the valve body, and the flow regulating assembly is any one of the flow regulating assemblies.
It can be understood that through the reasonable structure setting of above-mentioned flow control subassembly for this electronic expansion valve realizes the face-to-face contact seal, and then ensures the sealed effect of this electronic expansion valve during operation, can make this electronic expansion valve realize the flow control when low discharge simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of an electronic expansion valve provided by the application.
Fig. 2 is a schematic structural diagram of a flow regulating assembly according to the present application.
FIG. 3 is a schematic view of a partial structure of a valve head according to the present application.
Fig. 4 and 5 are schematic partial structures of a valve head according to another embodiment of the present application.
Fig. 6 is a schematic structural view of the gasket of the present application.
Wherein, 10, valve head; 11. sealing surfaces; 12. adjusting the surface; 121. adjusting the sectional surface; 13. an empty-avoiding groove; 20. a sealing gasket; 201. a channel; 2011. a channel wall; 21. sealing the mating surface; 22. a flow guiding surface; 23. a clearance gap; 200. a valve body; 210. the valve port.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the electronic expansion valve provided by the application comprises a valve body 200 and a flow regulating assembly, wherein the flow regulating assembly is arranged on the valve body 200 and is used for regulating the flow of a medium passing through a valve port 210 of the valve body 200 on the valve body 200, so that the purpose of regulating the flow when the electronic expansion valve works is achieved.
As shown in fig. 2 to 6, the flow regulating assembly provided by the present application includes a valve head 10 and a sealing pad 20, wherein a channel 201 is formed on the sealing pad 20, and the valve head 10 can move relative to the sealing pad 20 to regulate the medium flow of the channel 201. When the flow regulating assembly is applied to an electronic expansion valve, the sealing gasket 20 of the flow regulating assembly is installed at the position of the valve port 210 of the valve body 200, and the channel 201 is communicated with the valve port 210, so that the valve head 10 can regulate the flow of the channel 201 on the sealing gasket 20, and the regulation of the flow of the medium during the operation of the electronic expansion valve can be realized.
In an embodiment, the valve head 10 of the embodiment is provided with a sealing surface 11 and an adjusting surface 12, the sealing pad 20 is provided with a sealing matching surface 21 and a diversion surface 22, and along with the movement of the valve head 10 relative to the sealing pad 20, the adjusting surface 12 can be driven to extend into the channel 201, and the flow area between the adjusting surface 12 and the sealing matching surface 21 can be adjusted to control the flow of medium in the channel 201; and under the drive of the valve head 10, the valve head 10 can block the channel 201 by abutting and matching between the sealing surface 11 and the sealing matching surface 21, and the flow guiding surface 22 can guide the medium passing between the adjusting surface 12 and the sealing matching surface 21 and entering the channel 201. The flow area mentioned above specifically refers to the minimum passage area between the adjustment surface 12 and the seal mating surface 21 through which the medium passes.
As can be seen from the above, the flow rate adjusting assembly can realize the surface-to-surface sealing between the valve head 10 and the gasket 20 by the abutment between the sealing surface 11 and the sealing mating surface 21 during operation, and can realize the flow rate adjustment when the flow rate of the flow rate adjusting assembly is small by controlling the flow area between the adjusting surface 12 and the sealing mating surface 21, and at the same time, the adjusting surface 12 can play a role of guiding flow and reducing flow resistance, especially reducing flow resistance at the maximum opening.
The guide surface 22 is disposed on the periphery of the adjusting surface 12 along the axial direction of the sealing gasket 20, so that the guide surface 22 is specifically disposed on the sealing gasket 20 and the adjusting surface 12 is disposed on the valve head 10, so as to ensure that the guide surface 22 can guide the medium entering between the adjusting surface 12 and the sealing mating surface 21.
The adjusting surface 12 and the guiding surface 22 of the embodiment are both in inclined structures, and the inclination angle of the guiding surface 22 is larger than that of the adjusting surface 12 relative to the axis of the sealing gasket 20, so that the structure arrangement of the guiding surface 22 on the sealing gasket 20 and the structure arrangement of the adjusting surface 12 on the valve head 10 are specifically realized, the flow regulation when the adjusting surface 12 can be matched with the sealing matching surface 21 on the sealing gasket 20 and realize small flow is satisfied, and the using requirements of guiding and reducing flow resistance can be met by the guiding surface 22.
Specifically, the adjusting surface 12 is provided as a complete inclined surface, which has a simplified structure and facilitates the production and preparation of the valve head 10.
It should be noted that, the adjusting surface 12 is not limited to the above-mentioned integral inclined surface structure, and for those skilled in the art, the adjusting surface 12 includes a plurality of adjusting segment surfaces 121, and the adjusting segment surfaces 121 are sequentially connected, that is, the inclination angles of each adjusting segment surface 121 are different, so that two adjacent adjusting segment surfaces 121 are connected at a certain angle.
The sealing surface 11 and the sealing matching surface 21 of the application are both in planar structures, so that the structural arrangement of the sealing surface 11 and the sealing matching surface 21 is realized. The seal surface 11 and the seal mating surface 21 are not limited to those shown in the drawings, and the seal surface 11 and the seal mating surface 21 may be provided as inclined surfaces that mate with each other, and will not be described here.
The guide surface 22 is provided on the outer periphery of the seal mating surface 21, thereby specifically realizing the positional relationship between the guide surface 22 and the seal mating surface 21 on the gasket 20.
Of course, the flow guiding surface 22 is not limited to the inclined surface described above, and it is obvious to those skilled in the art that the flow guiding surface 22 may be configured in a planar structure, so as to implement an embodiment of the flow guiding surface 22.
In addition, the sealing gasket 20 of the present application is provided with the clearance gap 23, and the clearance gap 23 is provided at the connection position of the sealing mating surface 21 and the channel wall 2011 of the channel 201, so that the space between the adjusting surface 12 of the valve head 10 and the sealing gasket 20 can be increased, thereby ensuring that the medium can pass between the adjusting surface 12 and the sealing mating surface 21 and enter the channel 201 under the flow guiding of the flow guiding surface 22, and avoiding the burr or flanging generated during processing from affecting the surface sealing.
In the application, the valve head 10 is provided with the clearance groove 13, and the clearance groove 13 is arranged at the position between the sealing surface 11 and the adjusting surface 12, so that the surface sealing can be realized, and the clearance is avoided when the valve head 10 is processed and has turnover or burrs, thereby avoiding the influence on the surface sealing effect.
In summary, the electronic expansion valve with the flow regulating assembly realizes surface-to-surface contact sealing, so that the sealing effect of the electronic expansion valve during working is ensured, and meanwhile, the electronic expansion valve realizes the function of flow regulation during small flow.
The technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the application and are not to be construed as limiting the application, and that suitable modifications and variations of the above embodiments are within the scope of the application as claimed.

Claims (10)

1. A flow regulating assembly comprising a valve head (10) and a sealing gasket (20), wherein a channel (201) is formed in the sealing gasket (20), and the valve head (10) can move relative to the sealing gasket (20) so as to regulate the medium flow of the channel (201);
the valve head is characterized in that a sealing surface (11) and an adjusting surface (12) are arranged on the valve head (10), and a sealing matching surface (21) and a diversion surface (22) are arranged on the sealing gasket (20);
along with the movement of the valve head (10) relative to the sealing gasket (20), the valve head can drive the adjusting surface (12) to extend into the channel (201) and adjust the flow area between the adjusting surface (12) and the sealing matching surface (21) so as to control the flow of medium in the channel (201); and under the drive of valve head (10), valve head (10) can seal passageway (201) with sealing face (11) with the butt cooperation between sealed mating surface (21), guide surface (22) can guide the medium of passing through between regulating surface (12) and sealed mating surface (21).
2. Flow regulating assembly according to claim 1, characterized in that the flow guiding surface (22) is provided at the periphery of the regulating surface (12) in the axial direction of the sealing gasket (20).
3. The flow regulating assembly according to claim 1, wherein the flow guiding surface (22) and the regulating surface (12) are each provided in a beveled configuration, and wherein the angle of inclination of the flow guiding surface (22) is greater than the angle of inclination of the regulating surface (12) with respect to the axis of the gasket (20).
4. The flow regulating assembly according to claim 1, wherein the regulating surface (12) comprises a plurality of regulating segment surfaces (121), the plurality of regulating segment surfaces (121) being connected in sequence.
5. A flow regulating assembly according to claim 1, characterized in that the sealing surface (11) and the sealing counter surface (21) are both provided in a planar configuration.
6. Flow regulating assembly according to claim 1, characterized in that the flow guiding surface (22) is provided in a planar structure.
7. A flow regulating assembly according to claim 1, characterized in that the flow guiding surface (22) is provided at the periphery of the sealing mating surface (21).
8. The flow regulating assembly according to claim 1, wherein the sealing gasket (20) is provided with a clearance gap (23), and the clearance gap (23) is arranged at a position where the sealing matching surface (21) is connected with a channel wall (2011) of the channel (201).
9. Flow regulating assembly according to claim 1, characterized in that the valve head (10) is provided with a clearance groove (13), the clearance groove (13) being provided in a position between the sealing surface (11) and the regulating surface (12).
10. An electronic expansion valve comprising a valve body (200) and a flow regulating assembly mounted on the valve body (200), characterized in that the flow regulating assembly is provided as claimed in any one of claims 1-9.
CN202210182091.XA 2022-02-25 2022-02-25 Flow regulating assembly and electronic expansion valve Pending CN116697053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210182091.XA CN116697053A (en) 2022-02-25 2022-02-25 Flow regulating assembly and electronic expansion valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210182091.XA CN116697053A (en) 2022-02-25 2022-02-25 Flow regulating assembly and electronic expansion valve

Publications (1)

Publication Number Publication Date
CN116697053A true CN116697053A (en) 2023-09-05

Family

ID=87834408

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210182091.XA Pending CN116697053A (en) 2022-02-25 2022-02-25 Flow regulating assembly and electronic expansion valve

Country Status (1)

Country Link
CN (1) CN116697053A (en)

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