Expansion valve, air conditioning system and vehicle
By introducing cleaning components into the expansion valve, the media impact cleaning brush is used to remove impurities in the inner wall, solving the problem of degradation of flow control accuracy caused by refrigerant adhesion, and achieving higher flow regulation accuracy and media stability.
Patent Information
- Application Number
- CN202421963720.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-13
AI Technical Summary
In the prior art, the adhesion of refrigerant to the inner wall of the electronic expansion valve leads to a decrease in the flow control accuracy.
An expansion valve is designed, including a valve seat, a driving component, a regulating component and a cleaning component. The cleaning component consists of elastic parts, a cleaning brush and a telescopic part. The cleaning brush is used to clean the inner wall of the valve outlet hole and improve the flow adjustment accuracy.
Effectively remove impurities in the inner wall of the valve outlet hole, improve flow regulation accuracy and media stability, and avoid concentrated force when the media flows out.
Smart Images
Figure CN223121737U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air-conditioning components, and in particular relates to an expansion valve, an air-conditioning system and a vehicle. Background Art
[0002] The electronic expansion valve is a major component in the air conditioning system, and can control the flow rate of the refrigerant flowing into the evaporator. In the prior art, after the electronic expansion valve is used for a long time, the refrigerant is easy to adhere to the inner wall of the electronic expansion valve, so that the refrigerant adhered to the inner wall of the electronic expansion valve will reduce the flow control accuracy of the electronic expansion valve. Utility Model Content
[0003] The utility model aims at the technical problem that the refrigerant adhering to the inner wall reduces the flow control accuracy of the electronic expansion valve in the prior art, and proposes an expansion valve and an air conditioning system.
[0004] In order to solve the above problems, the first embodiment of the utility model provides an expansion valve, including a valve seat, a drive assembly, an adjustment assembly and a cleaning assembly, wherein the valve seat is provided with an internal space and a valve inlet hole and a valve outlet hole both connected to the internal space;
[0005] The driving assembly is installed in the internal space and connected to the regulating assembly; one end of the regulating assembly away from the driving assembly is arranged opposite to the valve inlet hole, and the driving assembly is used to drive the regulating assembly to adjust the medium flow between the valve inlet hole and the valve outlet hole;
[0006] The cleaning assembly comprises an elastic member, a cleaning brush and a telescopic member installed in the valve outlet hole, the cleaning brush is installed on the telescopic member, and the elastic member is installed in the valve outlet hole and abuts against the cleaning brush.
[0007] Optionally, the cleaning brush is provided with a flow blocking portion extending toward a center line of the valve outlet hole.
[0008] Optionally, the regulating assembly includes a needle valve and a resistance member detachably connected to the needle valve, and one end of the needle valve away from the resistance member is connected to the driving assembly; the end of the resistance member away from the needle valve is provided with an regulating part adapted to the valve inlet hole, and the driving assembly is used to drive the needle valve to drive the regulating part of the resistance member to move in the valve inlet hole to regulate the medium flow between the valve inlet hole and the valve outlet hole.
[0009] Optionally, the valve inlet hole includes a first through hole and a tapered hole connected to the first through hole, and the tapered hole is connected to the internal space at one end away from the first through hole; the inner diameter of the tapered hole gradually increases from the first through hole toward the internal space.
[0010] Optionally, a first clamping portion is provided at the first end of the needle valve away from the driving assembly, and a second clamping portion is provided at one end of the abutting member away from the adjusting portion. The first clamping portion and the second clamping portion are detachably connected.
[0011] Optionally, a second through hole penetrating through the adjusting portion and the second clamping portion is further provided on the abutting member, and the second through hole communicates with the valve inlet hole.
[0012] Optionally, the adjusting assembly further includes an inner tube detachably inserted into the second through hole.
[0013] Optionally, the expansion valve further includes a sealing ring sleeved at the connection between the needle valve and the abutting member.
[0014] Optionally, the driving assembly includes a magnetic rotor, a connecting block, and a stator winding installed in the internal space. The magnetic rotor is installed in the inner hole of the stator winding; the connecting block is installed on the magnetic rotor;
[0015] The connecting block is provided with an internal threaded hole, and the needle valve is provided with a screw rod, and the screw rod is threadedly inserted into the internal threaded hole.
[0016] The second embodiment of the present invention further provides an air conditioning system, including a compressor, a condenser, an evaporator, and the above-mentioned expansion valve; the outlet of the compressor communicates with the inlet of the condenser, the outlet of the condenser communicates with the valve inlet hole, the valve outlet hole communicates with the inlet of the evaporator, and the outlet of the evaporator communicates with the inlet of the compressor.
[0017] The third embodiment of the present invention further provides a vehicle, including the above-mentioned air conditioning system.
[0018] In the present invention, the cleaning assembly includes an elastic member, a cleaning brush, and a telescopic member installed in the valve outlet hole. The cleaning brush is installed on the telescopic member, and the elastic member is installed in the valve outlet hole and abuts against the cleaning brush; during the process that the medium (refrigerant, refrigerant, etc.) flows into the valve outlet hole through the valve inlet hole, the medium will impact the cleaning brush, the cleaning brush moves on the telescopic member, and the elastic force of the elastic member can also drive the cleaning brush to move on the telescopic member, so that the cleaning brush can remove impurities, medium, etc. remaining on the inner wall of the valve outlet hole, ensuring the cleanliness of the valve outlet hole and improving the flow regulation accuracy of the expansion valve. In addition, during the process that the medium pushes the cleaning brush to move, the cleaning brush can decompose the impact force of the medium in the valve outlet hole, avoiding the problem of concentrated acting force of the medium flowing out of the valve outlet hole and improving the stability of the medium flowing out of the expansion valve. Description of the Drawings
[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] Figure 1 A cross-sectional view of an expansion valve provided by an embodiment of the present utility model;
[0021] Figure 2 is Figure 1 a partial enlarged view of part A in
[0022] Figure 3 is Figure 1 a partial enlarged view of part B in
[0023] Figure 4 A schematic diagram of an air-conditioning system provided by an embodiment of the present utility model.
[0024] The reference numerals in the specification are as follows:
[0025] 10. Expansion valve; 1. Valve seat; 11. Internal space; 12. Valve inlet hole; 121. First through hole; 122. Tapered hole; 13. Valve outlet hole; 2. Driving assembly; 21. Magnetic rotor; 22. Connecting block; 23. Stator winding; 3. Adjusting assembly; 31. Needle valve; 32. Contact member; 321. Adjusting portion; 322. Second clamping portion; 323. Second through hole; 33. Inner tube; 4. Cleaning assembly; 41. Elastic member; 42. Cleaning brush; 421. Flow blocking portion; 43. Telescopic member; 5. Sealing ring; 20. Compressor; 30. Condenser; 40. Evaporator. Specific embodiments
[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0027] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.
[0028] As Figure 1 and Figure 3As shown in the figure, an expansion valve 10 provided by the first embodiment of the present utility model includes a valve seat 1, a driving assembly 2, an adjusting assembly 3, and a cleaning assembly 4. An internal space 11, a valve inlet hole 12 and a valve outlet hole 13 that are both communicated with the internal space 11 are provided on the valve seat 1. Preferably, the center line of the valve inlet hole 12 coincides with the center line of the internal space 11, and the center line of the valve inlet hole 12 is perpendicular to the center line of the valve outlet hole 13.
[0029] The driving assembly 2 is installed in the internal space 11 and is connected to the adjusting assembly 3. One end of the adjusting assembly 3 away from the driving assembly 2 is disposed opposite to the valve inlet hole 12. The driving assembly 2 is used to drive the adjusting assembly 3 to adjust the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13. It can be understood that the driving assembly 2 includes, but is not limited to, a linear motor, an electromagnetic winding, etc. The driving assembly 2 can drive the adjusting assembly 3 to move, and the adjusting assembly 3 adjusts the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13 by the depth inserted into the valve inlet hole 12.
[0030] The cleaning assembly 4 includes an elastic member 41, a cleaning brush 42, and a telescopic member 43 installed in the valve outlet hole 13. The cleaning brush 42 is installed on the telescopic member 43, and the elastic member 41 is installed in the valve outlet hole 13 and abuts against the cleaning brush 42. It can be understood that the telescopic member 43 includes, but is not limited to, a telescopic rod, etc., and the elastic member 41 includes, but is not limited to, a spring, etc. The elastic member 41 can be sleeved on the telescopic member 43. The elastic member 41 can also be sleeved on a sliding rod, and the sliding rod is slidably inserted into a sliding hole of the cleaning brush 42.
[0031] In the present utility model, the cleaning assembly 4 includes an elastic member 41, a cleaning brush 42, and a telescopic member 43 installed in the valve outlet hole 13. The cleaning brush 42 is installed on the telescopic member 43, and the elastic member 41 is installed in the valve outlet hole 13 and abuts against the cleaning brush 42. During the process that the medium (refrigerant, refrigerant medium, etc.) flows through the valve inlet hole 12 into the valve outlet hole 13, the medium will impact the cleaning brush 42, and the cleaning brush 42 moves on the telescopic member 43. The rebounding force of the elastic member 41 can also drive the cleaning brush 42 to move on the telescopic member 43. Thus, the cleaning brush 42 can remove impurities, medium, etc. remaining on the inner wall of the valve outlet hole 13, ensuring the cleanliness of the valve outlet hole 13 and improving the flow rate adjustment accuracy of the expansion valve 10. In addition, during the process that the medium pushes the cleaning brush 42 to move, the cleaning brush 42 can decompose the impact force of the medium in the valve outlet hole 13, avoiding the problem of concentrated acting force of the medium flowing out of the valve outlet hole 13 and improving the stability of the medium flowing out of the expansion valve 10.
[0032] In one embodiment, as Figure 1 and Figure 3 shown, a flow blocking portion 421 extending towards the center line of the valve outlet hole 13 is provided on the cleaning brush 42. It can be understood that the flow blocking portion 421 increases the force-bearing area of the cleaning brush 42, making it easier for the medium in the valve outlet hole 13 to drive the cleaning brush 42 to move. During the movement of the cleaning brush 42, the acting force of the medium in the valve outlet hole 13 can be weakened, thereby further ensuring the decomposition force of the cleaning brush 42 on the medium in the valve outlet hole 13.
[0033] In one embodiment, as Figure 1 and Figure 2 shown, the adjusting assembly 3 includes a needle valve 31 and a contact member 32 detachably connected to the needle valve 31. One end of the needle valve 31 away from the contact member 32 is connected to the driving assembly 2; an adjusting portion 321 adapted to the valve inlet hole 12 is provided at one end of the contact member 32 away from the needle valve 31. The driving assembly 2 is used to drive the needle valve 31 to drive the adjusting portion 321 of the contact member 32 to move in the valve inlet hole 12 to adjust the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13. It can be understood that the contact member 32 can be detachably installed on the needle valve 31 through a snap structure, a plug-in structure, etc. Specifically, the driving assembly 2 can drive the contact member 32 to move through the needle valve 31, and the adjusting portion 321 of the contact member 32 adjusts the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13 by the depth inserted into the valve inlet hole 12.
[0034] During the operation of the contact member 32, the medium in the valve inlet hole 12 has a large impact force on the contact member 32, and the adjusting portion 321 of the contact member 32 will abut against the inner wall of the valve inlet hole 12. Therefore, there is a large frictional force between the adjusting portion 321 and the inner wall of the valve inlet hole 12, and the contact member 32 is prone to wear. In this embodiment, the contact member 32 is detachably installed on the needle valve 31, which is convenient for replacing the contact member 32.
[0035] In one embodiment, as Figure 1 and Figure 2 shown, the valve inlet hole 12 includes a first through hole 121 and a tapered hole 122 communicating with the first through hole 121. One end of the tapered hole 122 away from the first through hole 121 communicates with the internal space 11; in the direction from the first through hole 121 towards the internal space 11, the inner diameter of the tapered hole 122 gradually increases. It can be understood that the inner diameter of the tapered hole 122 at one end towards the first through hole 121 is smaller, and the inner diameter at one end towards the internal space 11 is larger.
[0036] Specifically, during the process that the driving component 2 drives the abutting member 32 to move through the needle valve 31, the adjusting portion 321 adjusts the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13 by the depth of insertion into the conical hole 122. When the depth of the adjusting portion 321 drawn into the conical hole 122 is relatively deep, the distance between the adjusting portion 321 and the inner wall of the conical hole 122 is relatively small (that is, the opening degree of the valve inlet hole 12 is relatively small), and the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13 is relatively small. When the depth of the adjusting portion 321 extending into the conical hole 122 is relatively shallow, the distance between the adjusting portion 321 and the inner wall of the conical hole 122 is relatively large (that is, the opening degree of the valve inlet hole 12 is relatively large), and the medium flow rate between the valve inlet hole 12 and the valve outlet hole 13 is relatively large. In this embodiment, the expansion valve 10 has a simple structure and low manufacturing cost.
[0037] In a specific embodiment, as Figure 1 and Figure 2 shown, the adjusting portion 321 is a conical portion extending into the conical hole 122; in the direction from the inner space 11 towards the first through hole 121, the outer diameter of the conical portion gradually decreases. It can be understood that the outer diameter of the conical portion at the end towards the first through hole 121 is relatively small, and the outer diameter at the end towards the needle valve 31 is relatively large.
[0038] In an embodiment, as Figure 1 and Figure 2 shown, a first clamping portion (not shown in the figure) is provided at the first end of the needle valve 31 away from the driving component 2, and a second clamping portion 322 is provided at the end of the abutting member 32 away from the adjusting portion 321, and the first clamping portion is detachably connected to the second clamping portion 322. It can be understood that the first clamping portion and the second clamping portion 322 can be the cooperation of a clamping portion and a clamping convex portion, that is, when the first clamping portion is a clamping groove, the second clamping portion 322 is a clamping convex portion; when the second clamping portion 322 is a clamping groove, the first clamping portion is a clamping convex portion.
[0039] Specifically, the steps for docking and installing the abutting member 32 and the needle valve 31 are as follows: First, dock the second clamping portion 322 with the first clamping portion, and then rotate the abutting member 32 so that the second clamping portion 322 and the first clamping portion are clamped with each other. The disassembly steps between the abutting member 32 and the needle valve 31 are as follows: First, rotate the abutting member 32 until the second clamping portion 322 is disengaged from the first clamping portion, and then remove the abutting member 32 from the needle valve 31. In this embodiment, the disassembly and assembly operations between the abutting member 32 and the needle valve 31 are simple.
[0040] In one embodiment, as Figure 1 shown, a second through hole 323 penetrating through the adjusting portion 321 and the second engaging portion 322 is further provided on the abutting member 32, and the second through hole 323 communicates with the valve inlet hole 12. It can be understood that one end of the second through hole 323 faces the second engaging portion 322, and the other end of the second through hole 323 faces the valve inlet hole 12. Specifically, one end of a tool can pass through the valve inlet hole 12 and extend into the second through hole 323, and the tool can toggle the second engaging portion 322 so that the second engaging portion 322 engages or disengages from the first engaging portion. In this embodiment, the design of the second through hole 323 further improves the convenience of disassembly and assembly between the abutting member 32 and the needle valve 31. In addition, the medium in the valve inlet hole 12 can enter the second through hole 323 and flush the abutting member 32 to prevent impurities, etc. from adhering to the abutting member 32, further ensuring the flow regulation accuracy of the expansion valve 10.
[0041] In one embodiment, as Figure 1 and Figure 2 shown, the adjusting assembly 3 further includes an inner tube 33 detachably inserted into the second through hole 323. It can be understood that the inner tube 33 can be inserted into the second through hole 323 through a threaded structure. One end of a tool can pass through the valve inlet hole 12 and extend into the inner hole of the inner tube 33, and the tool can toggle the second engaging portion 322; in this embodiment, the design of the inner tube 33 avoids the accident of damaging the abutting member 32 when the tool toggles the second engaging portion 322, and prolongs the service life of the expansion valve 10.
[0042] In one embodiment, as Figure 1 shown, the expansion valve 10 further includes a sealing ring 5 sleeved on the connection portion between the needle valve 31 and the abutting member 32. It can be understood that the sealing ring 5 is sleeved on the needle valve 31 and the abutting member 32, and the sealing ring 5 can prevent leakage accidents at the connection portion between the needle valve 31 and the abutting member 32, thereby avoiding the medium from adhering to the needle valve 31.
[0043] In one embodiment, as Figure 1 shown, the driving assembly 2 includes a magnetic rotor 21, a connecting block 22, and a stator winding 23 installed in the internal space 11. The magnetic rotor 21 is installed in the inner hole of the stator winding 23; the connecting block 22 is installed on the magnetic rotor 21; an internal threaded hole is provided on the connecting block 22, and a screw rod is provided on the needle valve 31, and the screw rod is threadedly inserted into the internal threaded hole. It can be understood that an external thread is provided on the screw rod.
[0044] Specifically, after the stator winding 23 is energized, the stator winding 23 drives the magnetic rotor 21 and the connecting block 22 to rotate, and the connecting block 22 drives the needle valve 31 to move through the screw rod connected to the internal thread hole by a thread. In this embodiment, the needle valve 31 and the connecting block 22 are connected by a thread structure, so that the disassembly and assembly operation between the needle valve 31 and the connecting block 22 is simple, and thus it is convenient to replace the needle valve 31.
[0045] As Figure 3 shown, the second embodiment of the present invention further provides an air conditioning system, including a compressor 20, a condenser 30, an evaporator 40, and the above-mentioned expansion valve 10; the outlet of the compressor 20 is communicated with the inlet of the condenser 30, the outlet of the condenser 30 is communicated with the valve inlet hole 12, the valve outlet hole 13 is communicated with the inlet of the evaporator 40, and the outlet of the evaporator 40 is communicated with the inlet of the compressor 20.
[0046] Specifically, the compressor 20 extracts the low-pressure gas refrigerant in the evaporator 40, and the refrigerant is compressed in the compressor 20 and converted into a high-pressure state. The compressor 20 transports the refrigerant to the condenser 30. After the refrigerant exchanges heat with the external air in the condenser 30, the refrigerant reaches the dew point determined by the pressure in the condenser 30, and the refrigerant begins to condense and is converted into a liquid refrigerant. The condenser 30 transports the liquid refrigerant to the inlet of the evaporator 40 through the valve inlet hole 12 and the valve outlet hole 13 of the expansion valve 10. Among them, the driving assembly 2 can adjust the refrigerant flow rate flowing out of the expansion valve 10 through the adjusting assembly 3; the liquid refrigerant is depressurized and evaporated in the evaporator 40, so that the liquid refrigerant is converted into a gaseous refrigerant in the evaporator 40 and flows back to the compressor 20.
[0047] The third embodiment of the present invention further provides a vehicle, which is characterized in that it includes the above-mentioned air conditioning system.
[0048] The above are only the preferred embodiments of the present invention, and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An expansion valve, characterized in that, It comprises a valve seat, a driving assembly, an adjusting assembly and a cleaning assembly, wherein the valve seat is provided with an internal space and a valve inlet hole and a valve outlet hole both connected to the internal space; The driving assembly is installed in the internal space and connected to the regulating assembly; one end of the regulating assembly away from the driving assembly is arranged opposite to the valve inlet hole, and the driving assembly is used to drive the regulating assembly to adjust the medium flow between the valve inlet hole and the valve outlet hole; The cleaning assembly comprises an elastic member, a cleaning brush and a telescopic member installed in the valve outlet hole, the cleaning brush is installed on the telescopic member, and the elastic member is installed in the valve outlet hole and abuts against the cleaning brush.
2. The expansion valve according to claim 1, wherein The cleaning brush is provided with a flow blocking portion extending toward the center line of the valve outlet hole.
3. The expansion valve according to claim 1, characterized in that, The regulating assembly includes a needle valve and a resistance member detachably connected to the needle valve, and the end of the needle valve away from the resistance member is connected to the driving assembly; the end of the resistance member away from the needle valve is provided with a regulating part adapted to the valve inlet hole, and the driving assembly is used to drive the needle valve to drive the regulating part of the resistance member to move in the valve inlet hole, so as to adjust the medium flow between the valve inlet hole and the valve outlet hole.
4. The expansion valve according to claim 3, characterized in that, The valve inlet hole includes a first through hole and a tapered hole connected to the first through hole, and the tapered hole is connected to the internal space at one end away from the first through hole; the inner diameter of the tapered hole gradually increases from the first through hole toward the internal space.
5. The expansion valve according to claim 3, characterized in that A first clamping portion is provided at a first end of the needle valve away from the driving assembly, and a second clamping portion is provided at an end of the abutment member away from the adjusting portion. The first clamping portion and the second clamping portion are detachably connected.
6. The expansion valve according to claim 5, characterized in that, The abutment member is further provided with a second through hole penetrating the adjusting portion and the second clamping portion, and the second through hole is connected to the valve inlet hole.
7. The expansion valve according to claim 6, wherein The adjustment assembly further comprises an inner tube detachably inserted into the second through hole; and / or The expansion valve further comprises a sealing ring sleeved at the connection between the needle valve and the abutment member.
8. The expansion valve according to claim 3, characterized in that The driving assembly comprises a magnetic rotor, a connecting block and a stator winding installed in the inner space, wherein the magnetic rotor is installed in an inner hole of the stator winding; the connecting block is installed on the magnetic rotor; The connecting block is provided with an internal threaded hole, the needle valve is provided with a screw rod, and the screw rod is threadably inserted into the internal threaded hole.
9. An air conditioning system, characterized in that, It comprises a compressor, a condenser, an evaporator and an expansion valve as described in any one of claims 1 to 8; the outlet of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the valve inlet hole, the valve outlet hole is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the inlet of the compressor.
10. A vehicle, characterized in that, Comprising the air conditioning system as claimed in claim 9.