Temperature control flow valve
Through the design of the temperature-controlled flow valve, the flow of the medium is automatically controlled by using the thermosensitive medium to sense temperature changes, which solves the problem of insufficient heating in the electric vehicle heat pump system in winter and achieves efficient heating and cost reduction.
Patent Information
- Application Number
- CN202422992409.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-05
AI Technical Summary
When existing electric vehicle heat pump systems provide heating in winter, the external heat exchanger does not absorb enough heat from the air, resulting in the heating needs of the passenger compartment not being met. Existing solutions, such as PTC heating devices, are heavy and costly, and electronic expansion valves are expensive.
A temperature-controlled flow valve is designed. By setting a sliding part and a power box in the valve body, the heat-sensitive medium in the spiral tube is used to sense temperature changes, and the circulation and backflow of the high-temperature medium are automatically controlled to achieve a heating function without the need for additional heating devices.
The heating efficiency of the heat pump system is improved, the weight of the system is reduced, the production cost is lowered, and no additional heating device is required.
Smart Images
Figure CN223424643U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigeration and air conditioning, in particular to a temperature control flow valve. Background Art
[0002] The thermal management system of an electric vehicle is a crucial component. Besides maintaining the appropriate operating temperature range for power components such as batteries, motors, and electronic controls, it also creates a comfortable thermal and humid environment in the passenger compartment, crucial for ensuring the safe and efficient operation of electric vehicles. Typically, new energy vehicles use an intermediate heat exchanger in a heat pump system to heat the passenger compartment in winter.
[0003] In winter, if a heat pump system absorbs only a limited amount of heat from the air through an external heat exchanger, it cannot meet the passenger compartment heating needs. Existing technologies offer the following solutions: 1. Using air PTC auxiliary heating; 2. Using an electronic expansion valve to direct the high-temperature, high-pressure refrigerant from the compressor exhaust back to the gas-liquid separator, where it mixes with the low-temperature, low-pressure refrigerant from the external heat exchanger before entering the compressor intake chamber. This allows the heat pump system to provide more heat to the passenger compartment. However, PTC heating devices are heavy and take up considerable space, while electronic expansion valves are expensive and costly.
[0004] Therefore, there is an urgent need for a temperature-controlled flow valve to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a temperature-controlled flow valve, which can control the high-temperature medium to perform auxiliary heating according to temperature changes, meet heating requirements, and control production costs.
[0006] To achieve this purpose, the present invention adopts the following technical solutions:
[0007] Provided is a temperature-controlled flow valve, comprising:
[0008] a valve body, wherein a channel is provided inside the valve body, a first port and a second port are formed at both ends of the channel, and the valve body is provided with a liquid inlet and a liquid outlet communicated with the channel;
[0009] a sliding member, the sliding member being slidably disposed in the channel, the sliding member being capable of closing or opening the communication between the liquid inlet and the liquid outlet;
[0010] A power box, comprising a box body, an expansion piece, and a spiral tube, the box body being provided with an opening communicating with the first port, the expansion piece being located in the box body and covering the opening, one end of the sliding member being passed through the opening and abutting against the expansion piece, the expansion piece and the inner wall of the box body forming a receiving cavity, one end of the spiral tube being passed through the box body and communicating with the receiving cavity;
[0011] A compression structure includes an end cover and an elastic member, the end cover is sealed and connected to the second port, and the elastic member is compressed between the end cover and the sliding member.
[0012] As an optional solution for the temperature-controlled flow valve, the power box further includes a protective member, which is disposed within the box body and between the sliding member and the telescopic piece.
[0013] As an optional solution for the temperature-controlled flow valve, the power box also includes a limiter, which is connected to the inner wall of the box body. The sliding part includes a sliding portion and a protruding portion radially protruding along the sliding portion. The sliding portion passes through the limiter, and the protruding portion is limited to the side of the limiter close to the opening.
[0014] As an optional solution for the temperature-controlled flow valve, the box body also includes a box cover and a box seat, the expansion piece is arranged between the box cover and the box seat, the expansion piece and the inner wall of the box cover form the accommodating cavity, and the opening is arranged on the box seat.
[0015] As an optional solution for the temperature-controlled flow valve, a ventilation hole is provided on the side wall of the box body, and the ventilation hole is provided between the opening and the expansion piece.
[0016] As an optional solution for the temperature-controlled flow valve, the expansion piece is provided with ridges.
[0017] As an optional solution of the temperature-controlled flow valve, the temperature-controlled flow valve further includes a first sealing ring, which is sleeved on the sliding member.
[0018] As an optional solution for the temperature-controlled flow valve, the sliding member is provided with an annular first sealing groove, and the first sealing ring is provided in the first sealing groove.
[0019] As an optional solution for the temperature-controlled flow valve, the end cover is threadedly connected to the inner wall of the second port.
[0020] As an optional solution for the temperature-controlled flow valve, the pressing structure further includes a second sealing ring, which is sleeved on the end cover.
[0021] Beneficial effects of the utility model:
[0022] The utility model provides a temperature-controlled flow valve, including a valve body, a sliding member, a power box and a clamping structure. A channel is provided in the valve body, the sliding member can slide in the channel, the power box and the clamping structure respectively close a first port and a second port connected to the channel, a liquid inlet and a liquid outlet connected to the channel are provided on the valve body, high-temperature material flows into the valve body through the liquid inlet and flows out from the liquid outlet, and the communication between the liquid inlet and the liquid outlet can be closed or opened by sliding the sliding member.
[0023] The power box includes a box body, an expansion piece and a spiral tube. The expansion piece is arranged in the box body and abuts against one end of the sliding member. The side of the expansion piece facing away from the sliding member forms a storage cavity with the inner wall of the box body. One end of the spiral tube is passed through the box body and communicates with the storage cavity, and the other end is placed in the external environment where temperature sensing is required or fixed on a specific object. The heat-sensitive medium can be injected into the storage cavity through the spiral tube, and the spiral tube can be closed after filling. By setting the injection tube to a threaded shape, the contact area between the heat-sensitive medium in the spiral tube and the external environment can be expanded, and the heat exchange efficiency between the heat-sensitive medium and the external environment can be improved, which is conducive to improving the response speed of the temperature control flow valve, and thus improving the heating efficiency of the heat pump system.
[0024] The compression structure includes an end cap and an elastic member. The end cap is sealed to the second port of the channel. The elastic member is compressed between the end cap and the end of the slider, which is away from the power box. The pressure exerted by the elastic member on the slider is opposite to the pressure exerted by the expansion strip. When the pressure on the expansion strip is greater, the slider moves toward the elastic member; when the pressure on the expansion strip decreases, the elastic member pushes the slider toward the expansion strip; when the forces on the slider are balanced, the slider stops sliding. The compression structure resets the slider, ensuring connectivity between the liquid inlet and outlet.
[0025] When the external ambient temperature of the spiral tube rises, the spiral tube and the heat-sensitive medium in the accommodating cavity expand due to the heat, causing the expansion piece to expand and deform toward the outside of the accommodating cavity, and then push the sliding member in the direction away from the power box, so that the sliding member can disconnect the connection between the liquid inlet and the liquid outlet; when the external ambient temperature of the spiral tube drops, the heat-sensitive medium contracts, causing the expansion piece to bend and deform toward the inside of the accommodating cavity. At this time, the sliding member can slide toward the power box under the push of the elastic member, thereby connecting the liquid inlet and the liquid outlet, realizing the reflux of the high-temperature material in the compressor, meeting the heating needs of the heat pump system, and no additional heating device is required, which is conducive to reducing the weight of the heat pump system and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic structural diagram of the temperature control flow valve provided by the utility model;
[0027] Figure 2 This is a schematic structural diagram of the valve body of the temperature-controlled flow valve provided by the present utility model;
[0028] Figure 3 is a structural schematic view of the power box of the temperature-controlled flow valve provided by the utility model;
[0029] Figure 4 is a structural schematic view of the sliding piece of the temperature-controlled flow valve provided by the utility model.
[0030] In the figure:
[0031] 100, valve body; 110, channel; 111, first port; 112, second port; 113, through hole; 120, liquid inlet; 130, liquid outlet;
[0032] 200, sliding piece; 210, sliding part; 211, first sealing groove; 220, protruding part;
[0033] 300, power box; 310, box body; 311, opening; 312, containing cavity; 313, box cover; 314, box seat; 315, air hole; 320, telescopic sheet; 330, spiral pipe; 340, protection piece; 350, limiting piece;
[0034] 400, compression structure; 410, end cover; 420, elastic piece; 430, second sealing ring;
[0035] 500, first sealing ring. DETAILED DESCRIPTION
[0036] The utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0037] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0039] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0040] like Figures 1 to 4 As shown, the temperature control flow valve of this embodiment includes a valve body 100, a sliding member 200, a power box 300 and a pressing structure 400. A channel 110 is provided inside the valve body 100, and a first port 111 and a second port 112 are formed at both ends of the channel 110. The valve body 100 is provided with a liquid inlet 120 and a liquid outlet 130 connected to the channel 110. High-temperature substances flow into the valve body through the liquid inlet 120 and flow out from the liquid outlet 130. In this embodiment, the liquid inlet 120 and the liquid outlet 130 are staggered. A through hole 113 is formed between the liquid inlet 120 and the liquid outlet 130, and the sliding member 200 is slidably arranged in the channel 110. The sliding member 200 can close or open the connection between the liquid inlet 120 and the liquid outlet 130, that is, the sliding member 200 can open or close the through hole 113. The power box 300 abuts against one end of the sliding member 200, and is used to push the sliding member 200 to close the through hole 113. The clamping structure 400 abuts against the other end of the sliding member 200, and is used to push the sliding member 200 to open the through hole 113.
[0041] In this embodiment, the valve body 100 is made of C3371 lead brass material, which has good plasticity and machinability and can be easily pressed into various complex shapes; it has excellent corrosion resistance and fatigue strength, can maintain stable performance under repeated loads, thereby extending the service life; it also has good thermal conductivity.
[0042] Optionally, the channel 110 is configured as a circular channel, and the sliding member 200 includes a sliding portion 210 . The sliding portion 210 is configured as a cylindrical structure, which is convenient for production and processing and helps to achieve sealing between the sliding member 200 and the channel 110 .
[0043] In this embodiment, the slider 200 is made of HPB steel. The end of the slider 200 that abuts the pressing structure 400 (i.e., the end used to close or open the through-hole 113) is configured as a spherical structure. When the spherical structure contacts the inner wall of the through-hole 113, it can better seal the through-hole 113. Optionally, the diameter of the through-hole 113 is 3 mm to 10 mm, which can ensure the flow rate of the through-hole 113 when the through-hole 113 is open, and ensure the sealing effect between the slider 200 and the through-hole 113 when the through-hole 113 is closed.
[0044] Furthermore, the temperature-controlled flow valve further includes a first sealing ring 500 , which is located in the channel 110 and sleeved on the sliding member 200 , for achieving sealing between the sliding member 200 and the inner wall of the channel 110 .
[0045] Preferably, the sliding member 200 is provided with an annular first sealing groove 211 , and the first sealing ring 500 is provided in the first sealing groove 211 to achieve positioning of the first sealing ring 500 and prevent the first sealing ring 500 from falling off.
[0046] Optionally, multiple first sealing rings 500 may be provided, with the multiple first sealing rings 500 spaced apart and sleeved on the sliding member 200 to further ensure a seal between the sliding member 200 and the inner wall of the channel 110. Preferably, multiple first sealing grooves 211 are also provided, with the multiple first sealing grooves 211 corresponding one-to-one with the multiple first sealing rings 500 to ensure the positioning of the first sealing rings 500. For example, two, three, four, etc. first sealing rings 500 may be provided.
[0047] In this embodiment, the power box 300 includes a box body 310, an expansion piece 320, and a spiral tube 330. The box body 310 is connected to the valve body 100. The box body 310 is provided with an opening 311 connected to the first port 111. The expansion piece 320 is located in the box body 310 and covers the opening 311. One end of the sliding member 200 is inserted through the opening 311 and abuts against the expansion piece 320. The expansion piece 320 and the inner wall of the box body 310 form a receiving cavity 312. One end of the spiral tube 330 is inserted through the box body 310 and connected to the receiving cavity 312. The compression structure 400 includes an end cap 410 and an elastic member 420. The end cap 410 is sealed and connected to the second port 112. The elastic member 420 is compressed between the end cap 410 and the sliding member 200.
[0048] Based on the above design, the expansion piece 320 is arranged in the box body 310 and abuts against one end of the sliding member 200. The side of the expansion piece 320 facing away from the sliding member 200 forms a receiving chamber 312 with the inner wall of the box body 310. One end of the spiral tube 330 is passed through the box body 310 and communicates with the receiving chamber 312, and the other end is placed in the external environment where temperature sensing is required or fixed on a specific object. The heat-sensitive medium can be injected into the receiving chamber 312 through the spiral tube 330, and the spiral tube 330 can be closed after filling. By setting the injection tube in a spiral shape, the contact area between the heat-sensitive medium in the spiral tube 330 and the external environment can be expanded, and the heat exchange efficiency between the heat-sensitive medium and the external environment can be improved, which is conducive to improving the reaction speed of the temperature-controlled flow valve to changes in the external environment temperature, thereby improving the heating efficiency of the heat pump system.
[0049] Optionally, the spiral tube 330 has a diameter of 1 mm and is made of TP2 copper material, which has good welding and cold bending properties, is convenient for bending processing and welding connection with the box body 310, and also has good thermal conductivity, which can ensure the thermal conductivity efficiency inside and outside the spiral tube 330.
[0050] Optionally, the expansion piece 320 is made of K100 steel material, which has good wear resistance and corrosion resistance, thereby ensuring the service life of the expansion piece 320.
[0051] Preferably, the expansion piece 320 is provided with ridges, which may extend in a spiral shape, or may be provided with multiple ridges, which may be distributed on the expansion piece 320 in the form of concentric circles, parallel circles, etc., to ensure a better sealing state with the box body 310, and to prevent the expansion piece 320 from being in contact with the sliding part 200 for a long time, resulting in adhesion and affecting the liquid supply state.
[0052] Furthermore, the box body 310 also includes a box cover 313 and a box seat 314, and the expansion piece 320 is arranged between the box cover 313 and the box seat 314. The expansion piece 320 and the inner wall of the box cover 313 form a accommodating cavity 312, and the opening 311 is arranged on the box seat 314. In this embodiment, the box cover 313 is provided with a flange structure, and the box cover 313 and the box seat 314 can be connected by snap connection; in some other embodiments, the box cover 313 and the box seat 314 can also be connected by riveting, welding, etc., to ensure the airtightness of the connection.
[0053] Optionally, the box seat 314 is configured to be funnel-shaped, and the box cover 313 and the box seat 314 are made of SUS stainless steel material, which has excellent corrosion resistance, pitting resistance and thermal service life, ensuring the structural strength and service life of the power box 300.
[0054] Furthermore, a vent hole 315 is provided on the side wall of the box body 310. The vent hole 315 is provided between the opening 311 and the expansion piece 320. That is, the vent hole 315 is provided on the side wall of the box base 314. This allows the interior of the box base 314 to communicate with the outside air, ensuring that the air pressure between the expansion piece 320 and the opening 311 remains constant, thereby preventing excessive air pressure inside the box base 314 from affecting the downward expansion of the expansion piece 320. Optionally, the air pressure inside the box base 314 is 0.1 MPa.
[0055] Furthermore, the power box 300 further includes a stopper 350 connected to the inner wall of the box body 310. The sliding member 200 further includes a protrusion 220 protruding radially along the sliding portion 210. The sliding portion 210 passes through the stopper 350, and the protrusion 220 is limited to a side of the stopper 350 near the opening 311. Optionally, the stopper 350 is welded to the inner wall of the box base 314.
[0056] When the external ambient temperature is too low, the sliding member 200 slides toward the power box 300. When the protrusion 220 abuts against the limit member 350, it can prevent the sliding member 200 from continuing to slide toward the power box 300, thereby limiting the maximum stroke of the sliding member 200 and preventing the sliding member 200 from excessive movement and causing damage to the telescopic piece 320 and the clamping structure 400.
[0057] Furthermore, the power box 300 also includes a protective member 340 , which is disposed in the box body 310 and between the sliding member 200 and the telescopic piece 320 . Specifically, the protective member 340 is disposed between the telescopic piece 320 and the limiting member 350 .
[0058] When the sliding part 200 slides, the sliding part 200 passes through the limiting part 350 and abuts against the protective part 340, and the protective part 340 abuts against the telescopic piece 320, thereby preventing the sliding part 200 from directly contacting the telescopic piece 320, reducing the wear of the sliding part 200 on the telescopic piece 320, and the cross-sectional area of the protective part 340 is larger than the cross-sectional area of the sliding part, which can reduce the stress concentration of the telescopic piece 320 and improve the service life of the telescopic piece 320.
[0059] In this embodiment, the compression structure 400 includes an end cap 410 and an elastic member 420. The end cap 410 is sealed and connected to the second port 112, and the elastic member 420 is compressed between the end cap 410 and the sliding member 200. The pressure exerted by the elastic member 420 on the sliding member 200 is opposite to the pressure exerted by the expansion piece 320 on the sliding member 200. When the pressure of the expansion piece 320 is greater, the sliding member 200 moves toward the elastic member 420; when the pressure of the expansion piece 320 decreases, the elastic member 420 pushes the sliding member 200 toward the expansion piece; when the force on the sliding member 200 is balanced, the sliding member 200 stops sliding. The compression structure 400 can achieve the reset of the sliding member 200, ensuring the connectivity between the liquid inlet 120 and the liquid outlet 130.
[0060] For example, the elastic member 420 may be configured as a metal spring, a rubber elastic member, or the like.
[0061] It should be noted that the end cap 410 is threadedly connected to the inner wall of the second port 112, thereby allowing the length of the end cap 410 extending into the second port 112 to be adjusted, thereby adjusting the initial compression length of the elastic member 420, thereby adjusting the initial pressure of the elastic member 420 and expanding the applicability of the temperature-controlled flow valve. Optionally, the end cap 410 is provided with a hexagonal countersunk hole on the side facing the outside of the second port 112, which allows the end cap 410 to be rotated using an hexagonal wrench, thereby facilitating adjustment of the position of the end cap 410.
[0062] Furthermore, the compression structure 400 further includes a second sealing ring 430 . The second sealing ring 430 is sleeved on the end cover 410 to achieve a sealing effect between the end cover 410 and the second port 112 .
[0063] Optionally, the end cover 410 is provided with a second sealing groove, and the second sealing ring 430 can be limited in the second sealing groove to achieve the positioning of the second sealing ring 430.
[0064] The temperature-controlled flow valve provided in this embodiment has the following characteristics: when the external ambient temperature of the spiral tube 330 increases, the heat-sensitive medium in the spiral tube 330 and the accommodating chamber 312 expands due to the heat, causing the expansion piece 320 to expand and deform toward the outside of the accommodating chamber 312, and then pushing the sliding member 200 in the direction away from the power box 300, so that the sliding member 200 can disconnect the connection between the liquid inlet 120 and the liquid outlet 130; when the external ambient temperature of the spiral tube 330 decreases, the heat-sensitive medium contracts, causing the expansion piece 320 to bend and deform toward the inside of the accommodating chamber 312. At this time, the sliding member 200 can slide toward the power box 300 under the push of the elastic member 420, thereby connecting the liquid inlet 120 with the liquid outlet 130, realizing the reflux of the high-temperature material of the compressor, meeting the heating needs of the heat pump system, and no additional heating device is required, which is conducive to reducing the weight of the heat pump system and low manufacturing cost.
[0065] In this embodiment, when the external ambient temperature is higher than -5°C, the expansion piece 320 pushes the sliding member 200 to close the through hole 113, and the liquid inlet 120 and the liquid outlet 130 cannot be connected; when the external ambient temperature is lower than -5°C, the thermosensitive medium shrinks, the pressure of the expansion piece 320 on the sliding member 200 decreases, the elastic member 420 pushes the sliding member 200 to move, the through hole 113 connects the liquid inlet 120 and the liquid outlet 130, and the high-temperature material flows through the liquid inlet 120 and the liquid outlet 130; as the external ambient temperature decreases, the sliding member 200 gradually moves away from the through hole 113, so that the flow rate between the liquid inlet 120 and the liquid outlet 130 gradually increases; when the external ambient temperature is lower than -21°C, the protrusion 220 abuts against the limit member 350, and the flow rate between the liquid inlet 120 and the liquid outlet 130 is the largest.
[0066] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. A temperature-controlled flow valve, characterized in that: include: A valve body (100), wherein a channel (110) is provided inside the valve body (100), a first port (111) and a second port (112) are formed at both ends of the channel (110), and the valve body (100) is provided with a liquid inlet (120) and a liquid outlet (130) in communication with the channel (110); a sliding member (200), the sliding member (200) being slidably disposed in the channel (110), and the sliding member (200) being capable of closing or opening the communication between the liquid inlet (120) and the liquid outlet (130); A power box (300), the power box (300) comprising a box body (310), an expansion piece (320) and a spiral tube (330), the box body (310) being provided with an opening (311) communicating with the first port (111), the expansion piece (320) being located in the box body (310) and covering the opening (311), one end of the sliding member (200) being passed through the opening (311) and abutting against the expansion piece (320), the expansion piece (320) and the inner wall of the box body (310) forming an accommodating cavity (312), one end of the spiral tube (330) being passed through the box body (310) and communicating with the accommodating cavity (312); A compression structure (400) includes an end cover (410) and an elastic member (420), wherein the end cover (410) is sealed and connected to the second port (112), and the elastic member (420) is compressed between the end cover (410) and the sliding member (200).
2. The temperature-controlled flow valve according to claim 1, characterized in that: The power box (300) further includes a protective member (340), wherein the protective member (340) is arranged in the box body (310), and the protective member (340) is arranged between the sliding member (200) and the expansion piece (320).
3. The temperature-controlled flow valve according to claim 1, characterized in that: The power box (300) further comprises a limiting member (350), wherein the limiting member (350) is connected to the inner wall of the box body (310); the sliding member (200) comprises a sliding portion (210) and a protruding portion (220) protruding radially along the sliding portion (210); the sliding portion (210) is passed through the limiting member (350), and the protruding portion (220) is limited to a side of the limiting member (350) close to the opening (311).
4. The temperature-controlled flow valve according to claim 1, characterized in that: The box body (310) further comprises a box cover (313) and a box seat (314); the expansion piece (320) is arranged between the box cover (313) and the box seat (314); the expansion piece (320) and the inner wall of the box cover (313) form the accommodating cavity (312); and the opening (311) is arranged on the box seat (314).
5. The temperature-controlled flow valve according to claim 1, characterized in that: A vent hole (315) is provided on the side wall of the box body (310), and the vent hole (315) is provided between the opening (311) and the expansion piece (320).
6. The temperature-controlled flow valve according to claim 1, characterized in that: The expansion piece (320) is provided with ridges.
7. The temperature-controlled flow valve according to claim 1, characterized in that: The temperature-controlled flow valve further comprises a first sealing ring (500), wherein the first sealing ring (500) is sleeved on the sliding member (200).
8. The temperature-controlled flow valve according to claim 7, characterized in that: The sliding member (200) is provided with an annular first sealing groove (211), and the first sealing ring (500) is arranged in the first sealing groove (211).
9. The temperature-controlled flow valve according to claim 1, characterized in that: The end cover (410) is threadedly connected to the inner wall of the second port (112).
10. The temperature-controlled flow valve according to claim 1, characterized in that: The compression structure (400) further includes a second sealing ring (430), and the second sealing ring (430) is sleeved on the end cover (410).