Reversing valve and temperature adjusting system
By designing a pressure relief valve in the reversing valve to communicate with the chamber at high pressure to achieve the purpose of pressure relief, the problem of the existing reversing valve prone to failure under high pressure is solved, ensuring the normal operation and safety of the temperature control system.
Patent Information
- Application Number
- CN202421779252.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Existing reversing valves are prone to failure under high pressure, resulting in the temperature regulation system being unable to operate normally.
A reversing valve including a valve body, a slider, a connecting pipe and a pressure relief valve is designed. The pressure relief valve is switched to the first state at high pressure, and the first chamber and the second chamber are connected to the pressure relief purpose, so as to avoid the impact of the high pressure on the valve body.
It effectively avoids the problem of the reversing valve failure due to high pressure, and ensures the normal operation and safety of the temperature control system.
Smart Images
Figure CN222783044U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of reversing valves, and in particular to reversing valves and temperature control systems. Background Art
[0002] As people's living conditions are improving, air conditioners are becoming more and more common as the main equipment for temperature regulation. The reversing valve is a key component in air conditioners. It plays a role in cooling and heating conversion in the temperature control system of air conditioners. It achieves the purpose of cooling and heating by changing the direction of the compressor exhaust pipe and the return air pipe entering the evaporator and condenser. However, in order to ensure that the reversing valve is in place, the existing reversing valve increases the air pressure in the valve body to make the reversing valve in place. However, the pressure in the valve body is too high, which will cause high-pressure impact on the valve body. After repeated impacts, the reversing valve will fail, resulting in the temperature control system not being able to operate normally. Utility Model Content
[0003] The present application provides a reversing valve and a temperature regulating system, which can prevent the reversing valve from being damaged by high pressure.
[0004] An embodiment of the present application provides a reversing valve, comprising: a valve body, a slider, a first connecting pipe, a plurality of second connecting pipes and a pressure relief valve, wherein the valve body encloses a first chamber; the slider is arranged in the first chamber, a second chamber is opened on the slider, and the slider moves along the length direction of the valve body; the first connecting pipe is arranged on the valve body and communicated with the first chamber; a plurality of second connecting pipes are arranged on the valve body and communicated with the first chamber, when the slider blocks one or more of the second connecting pipes, the first connecting pipe is communicated with another one or more of the second connecting pipes; the pressure relief valve is arranged on the slider, and can be switched between a first state and a second state, in the first state, the first chamber can be communicated with the second chamber, and in the second state, the first chamber is disconnected from the second chamber.
[0005] Further, the reversing valve includes: a protrusion, which is provided on the valve body and located in the first chamber. In the first state, the pressure relief valve deviates from the protrusion, and in the second state, the pressure relief valve is located above the protrusion to prevent it from switching to the first state.
[0006] Furthermore, the protrusion includes: a first protrusion and a second protrusion, and along the moving direction of the slider, the first protrusion and the second protrusion are located on both sides of the first connecting pipe.
[0007] Furthermore, the slider is provided with an air inlet connected to the second chamber, the reversing valve includes an elastic member, and when the pressure relief valve presses against the elastic member in a direction away from the air inlet, the elastic member is compressed, and the air inlet is connected to the first chamber and the second chamber. In the second state, the elastic force of the elastic member presses downward against the pressure relief valve, and the pressure relief valve seals the air inlet.
[0008] Further, the second connecting pipe at least includes: a first output pipe, one end of which is arranged on the valve body to communicate with the first chamber, and the other end of the first output pipe is connected to the condenser; a second output pipe, one end of which is arranged on the valve body to communicate with the first chamber, and the other end of the second output pipe is connected to the air inlet of the compressor; a third output pipe, one end of which is arranged on the valve body to communicate with the first chamber, and the other end of the third output pipe is connected to the evaporator.
[0009] Furthermore, one end of the first connecting pipe is arranged on the valve body to communicate with the first chamber, and the other end of the first connecting pipe is connected to the exhaust port of the compressor, and the medium in the compressor flows into the first chamber through the first connecting pipe.
[0010] Further, when the pressure relief valve moves to above the first protrusion, the pressure relief valve is in the second state, the first output pipe is connected to the second output pipe through the second chamber, and the first connecting pipe is connected to the third output pipe through the first chamber.
[0011] Further, when the pressure relief valve moves to above the second protrusion, the pressure relief valve is in the second state, the second output pipe is connected to the third output pipe through the second chamber, and the first connecting pipe is connected to the first output pipe through the first chamber.
[0012] Further, when the pressure relief valve moves between the first protrusion and the second protrusion, the medium entering the first chamber through the first connecting pipe pushes upward against the pressure relief valve, causing it to switch to the first state, and the first connecting pipe is connected to the first output pipe, the second output pipe and the third output pipe respectively through the first chamber and the second chamber.
[0013] An embodiment of the present application also provides a temperature control system, including the above-mentioned reversing valve, and also includes: a compressor, a condenser and an evaporator, the compressor is respectively connected to the first connecting pipe and one or more of the second connecting pipes, and the condenser and the evaporator are respectively connected to another one or more of the second connecting pipes.
[0014] In some embodiments, the pressure relief valve of the above technical solution is arranged on a slider, and can be switched to the first state when the air pressure in the valve body is too high, and the first chamber is connected to the second chamber to achieve the purpose of pressure relief, avoiding the impact of the valve body caused by excessive air pressure in the first chamber, thereby preventing the reversing valve from being damaged by high pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic diagram of a reversing valve according to an exemplary embodiment of the present application.
[0016] Figure 2 yes Figure 1 A sectional view of a directional control valve is shown, wherein the pressure relief valve is in the second state.
[0017] Figure 3 yes Figure 2 A partial enlarged view of the circle A of the reversing valve is shown, wherein only a portion of the valve body is shown.
[0018] Figure 4 yes Figure 1 The cross-sectional view of the reversing valve is shown, at this time, the pressure relief valve is in the first state.
[0019] Figure 5 yes Figure 4 A partial enlarged view of rectangle B of the reversing valve is shown, wherein only a portion of the valve body is shown.
[0020] Figure 6 yes Figure 1 A cross-sectional view of the reversing valve is shown, wherein the pressure relief valve is in the second state and is located above the first protrusion.
[0021] Figure 7 yes Figure 1 A cross-sectional view of the reversing valve is shown, wherein the pressure relief valve is in the second state and is located above the second protrusion.
[0022] Explanation of the accompanying drawings: 1. valve body; 2. first chamber; 3. pressure relief valve; 4. protrusion; 41. first protrusion; 42. second protrusion; 5. slider; 51. second chamber; 511. air inlet; 52. elastic member; 6. first connecting pipe; 7. second connecting pipe; 71. first output pipe; 72. second output pipe; 73. third output pipe; 8. piston; 9. connecting rod. DETAILED DESCRIPTION
[0023] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0024] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.
[0025] The embodiment of the present application provides a temperature control system, which is a system used for cooling or heating in an air conditioner. The reversing valve is an important component in the temperature control system to assist the temperature control system in operating a cooling or heating mode.
[0026] See also Figure 1 to Figure 2 As shown, the reversing valve comprises: a valve body 1 and a slider 5. The valve body 1 encloses a first chamber 2; the slider 5 is arranged in the first chamber 2, a second chamber 51 is provided on the slider 5, and the slider 5 moves along the length direction of the valve body 1. The design of the slider 5 enables the flow path inside the valve body 1 to be switched according to the change of the position of the slider 5, thereby realizing precise control of the flow direction of the fluid.
[0027] The reversing valve includes: a first connecting pipe 6 and multiple second connecting pipes 7. The first connecting pipe 6 is arranged on the valve body 1 and is connected to the first chamber 2. The multiple second connecting pipes 7 are arranged on the valve body 1 and are connected to the first chamber 2. When the slider 5 blocks one or more of the second connecting pipes 7, the first connecting pipe 6 is connected to one or more other second connecting pipes 7, thereby realizing the switching of different flow paths and improving the flexibility and applicability of the system.
[0028] The reversing valve includes a pressure relief valve 3, which is arranged on a slider 5 and can be switched between a first state and a second state to achieve connection or disconnection between the first chamber 2 and the second chamber 51, which is beneficial for automatically releasing excessive pressure when the reversing valve is running, thereby improving the safety of the reversing valve operation.
[0029] See also Figure 4 and Figure 5 As shown, the reversing valve includes a protrusion 4, which is provided on the valve body 1 and located in the first chamber 2. When the pressure relief valve 3 is in the first state, the first chamber 2 can be connected with the second chamber 51, and the pressure relief valve 3 deviates from the protrusion 4.
[0030] Ginseng Figure 6 and Figure 7As shown, when the pressure relief valve 3 is in the second state, the first chamber 2 is disconnected from the second chamber 51, and the pressure relief valve 3 is located above the protrusion 4 to prevent it from switching to the first state. The setting of the protrusion 4 prevents the pressure relief valve 3 from accidentally switching to the first state, ensuring that it can only switch to the first state under specific conditions, such as when the air pressure is too high and exceeds a threshold, thereby reducing the risk of accidents and damage.
[0031] In some embodiments, other limiting elements, such as limiting blocks, limiting pins or springs, etc., may also be used to limit the movement range of the slider 5.
[0032] In some embodiments, an electronic sensor or indicator light may be added to electronically detect and display the pressure state of the pressure relief valve 3 .
[0033] See also Figure 3 and Figure 4 As shown, the protrusion 4 includes: a first protrusion 41 and a second protrusion 42. Along the moving direction of the slider 5, the first protrusion 41 and the second protrusion 42 are located on both sides of the first connecting pipe 6, limiting the movement range of the slider 5 and further improving the safety and reliability of the system.
[0034] In some embodiments, magnetism or adsorption force can be used to achieve alignment and locking of the slider 5 and the protrusion 4, such as installing magnetic material in the slider 5, the first protrusion 41 and the second protrusion 42 to ensure that the slider 5 is attracted by the magnetic force when it is in a specific position, thereby achieving alignment and stability.
[0035] In some embodiments, a plurality of protrusions 4 may be provided, such as a third protrusion, a fourth protrusion, etc., to make the position of the slider 5 more precise.
[0036] In some embodiments, a mechanical or electronic sensor may be added to detect the position of the slider 5 and ensure its correct position through feedback control.
[0037] In some embodiments, the reversing valve further includes a piston 8 and a connecting rod 9 . The piston 8 is connected to the slider 5 via the connecting rod 9 . The piston 8 drives the slider 5 to move along the length direction of the valve body 1 .
[0038] See also Figures 3 to 5 As shown, the slider 5 is provided with an air inlet 511 communicating with the second chamber 51, and the reversing valve includes an elastic member 52. When the pressure relief valve 3 pushes against the elastic member 52 in a direction away from the air inlet 511, the pressure relief valve 3 is Figure 3 Status switch to Figure 5 In the state, the elastic member 52 is compressed, and the air inlet 511 communicates with the first chamber 2 and the second chamber 51 .
[0039] Ginseng Figure 3When the pressure relief valve 3 is in the second state, the elastic force of the elastic member 52 pushes the pressure relief valve 3 downward, and the pressure relief valve 3 seals the air inlet 511. The pressure relief valve 3 can flexibly control the opening and closing of the flow path to meet the functional requirements under different working conditions. Figure 4 and Figure 5 When an unexpectedly high pressure occurs, the pressure relief valve 3 will be lifted up, and the first chamber 2 is connected to the second chamber 51 to prevent the valve body 1 from being damaged by excessive pressure.
[0040] In some embodiments, a hydraulic or pneumatic control method may be used instead of the elastic member 52 and the slider 5 to control the opening and closing state of the air inlet 511 .
[0041] In some embodiments, an electronic control unit (ECU) and a sensor may be provided to realize the automatic pressure relief function of the pressure relief valve 3, and the electronic control system may adjust the position of the slider 5 and the state of the pressure relief valve 3 according to a preset program or feedback signal.
[0042] See also Figure 6 and Figure 7 As shown, the second connecting pipe 7 at least includes: a first output pipe 71, one end of the first output pipe 71 is arranged on the valve body 1 to communicate with the first chamber 2, and the other end of the first output pipe 71 is connected to the condenser; a second output pipe 72, one end of the second output pipe 72 is arranged on the valve body 1 to communicate with the first chamber 2, and the other end of the second output pipe 72 is connected to the air inlet of the compressor; a third output pipe 73, one end of the third output pipe 73 is arranged on the valve body 1 to communicate with the first chamber 2, and the other end of the third output pipe 73 is connected to the evaporator, forming a complete refrigeration or heating cycle, which is beneficial to improving the operating efficiency of the entire temperature control system.
[0043] In some embodiments, by controlling the position of the slider 5 in the valve body 1, the opening and closing of certain flow channels are controlled, and the compressor, condenser or evaporator are selectively connected to meet the needs under different working conditions.
[0044] In some embodiments, when the second connecting pipe 7 includes a first output pipe 71, a second output pipe 72 and a third output pipe 73, the reversing valve is a four-way reversing valve.
[0045] In some embodiments, in addition to the arrangement of the first output tube 71 , the second output tube 72 , and the third output tube 73 , more output tubes may be added to meet more complex system requirements.
[0046] In the embodiment of the present application, the first output pipe 71, the second output pipe 72 and the third output pipe 73 are rigid straight pipes. In some embodiments, a hose or a corrugated pipe may also be used to improve the flexibility and vibration resistance of the pipeline.
[0047] One end of the first connecting pipe 6 is arranged on the valve body 1 to communicate with the first chamber 2, and the other end of the first connecting pipe 6 is connected to the exhaust port of the compressor. The medium in the compressor flows into the first chamber 2 through the first connecting pipe 6. The setting of the first connecting pipe 6 can control the flow rate and direction of the medium entering the valve body 1 from the compressor, providing a basis for the subsequent switching of the flow path.
[0048] In some embodiments, the first connecting pipe 6 and the valve body 1 may be designed as a split type or an integrally formed type.
[0049] In some embodiments, a flow regulating device, such as a solenoid valve, a regulating valve, etc., may be integrated on the first connecting pipe 6 to achieve fine control of the medium flow.
[0050] like Figure 6 As shown, when the pressure relief valve 3 moves to the top of the first protrusion 41, the pressure relief valve 3 is in the second state, the first output pipe 71 is connected with the second output pipe 72 through the second chamber 51, the first connecting pipe 6 is connected with the third output pipe 73 through the first chamber 2, and the medium in the compressor flows into the third output pipe 73 via the first connecting pipe 6, and then flows into the evaporator to realize the circulation of the medium. At this time, the reversing valve is in the heating state.
[0051] like Figure 7 As shown, when the pressure relief valve 3 moves to the top of the second protrusion 42, the pressure relief valve 3 is in the second state, the second output pipe 72 is connected with the third output pipe 73 through the second chamber 51, the first connecting pipe 6 is connected with the first output pipe 71 through the first chamber 2, and the medium in the compressor flows into the first output pipe 71 via the first connecting pipe 6, and then flows into the condenser to realize the circulation of the medium. At this time, the reversing valve is in the refrigeration state.
[0052] In some embodiments, the medium in the compressor is a refrigerant, and refrigerants such as R22 (chlorodifluoromethane), R134a (tetrafluoroethane), and R290 (propane) may be used.
[0053] See also Figure 4 As shown, when the pressure relief valve 3 moves to between the first protrusion 41 and the second protrusion 42, the medium entering the first chamber 2 through the first connecting pipe 6 pushes upward against the pressure relief valve 3, causing it to switch to the first state. The first connecting pipe 6 is connected to the first output pipe 71, the second output pipe 72 and the third output pipe 73 through the first chamber 2 and the second chamber 51 respectively. At this time, the reversing valve is in a pressure relief state. The setting of the pressure relief valve 3 can ensure that when pressure reduction or safe release of the medium is required, the pressure relief operation is responded to and executed quickly, thereby avoiding high-pressure damage to the reversing valve.
[0054] The embodiment of the present application also provides a temperature control system, including the above-mentioned reversing valve, and also includes: a compressor, a condenser and an evaporator, the compressor is respectively connected to the first connecting pipe 6 and one or more second connecting pipes 7, and the condenser and the evaporator are respectively connected to another one or more second connecting pipes 7.
[0055] The temperature control system of the present application realizes a complete heating or cooling cycle through a reversing valve, and adjusts the transfer and discharge of heat as needed, thereby effectively controlling the temperature, which is conducive to meeting the temperature regulation needs in different scenarios, and can also reduce the energy consumption of the temperature control system and improve energy utilization efficiency.
[0056] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.
Claims
1. A reversing valve, characterized in that: include: A valve body, enclosing and forming a first chamber; A slider is disposed in the first chamber, a second chamber is formed on the slider, and the slider moves along the length direction of the valve body; A first connecting pipe, disposed on the valve body and connected to the first chamber; A plurality of second connecting pipes are provided on the valve body and communicated with the first chamber, and when the slider blocks one or more of the second connecting pipes, the first connecting pipe communicates with another one or more of the second connecting pipes; The pressure relief valve is arranged on the slider and can be switched between a first state and a second state. In the first state, the first chamber can be connected with the second chamber, and in the second state, the first chamber is disconnected from the second chamber.
2. The reversing valve according to claim 1, characterized in that: It includes: a protrusion, which is arranged on the valve body and located in the first chamber. In the first state, the pressure relief valve deviates from the protrusion. In the second state, the pressure relief valve is located above the protrusion to prevent it from switching to the first state.
3. The reversing valve according to claim 2, characterized in that: The protrusion includes: a first protrusion and a second protrusion. Along the moving direction of the slider, the first protrusion and the second protrusion are located at two sides of the first connecting pipe.
4. The reversing valve according to claim 3, characterized in that: The slider is provided with an air inlet connected to the second chamber, the reversing valve includes an elastic member, when the pressure relief valve presses against the elastic member in a direction away from the air inlet, the elastic member is compressed, the air inlet is connected to the first chamber and the second chamber, and in the second state, the elastic force of the elastic member presses downward against the pressure relief valve, and the pressure relief valve seals the air inlet.
5. The reversing valve according to claim 3, characterized in that: The second connecting pipe at least comprises: a first output pipe, one end of which is disposed on the valve body to communicate with the first chamber, and the other end of which is connected to a condenser; a second output pipe, one end of which is disposed on the valve body to communicate with the first chamber, and the other end of which is connected to an air inlet of the compressor; A third output pipe, one end of which is arranged on the valve body to communicate with the first chamber, and the other end of which is connected to the evaporator.
6. The reversing valve according to claim 5, characterized in that: One end of the first connecting pipe is disposed on the valve body to communicate with the first chamber, and the other end of the first connecting pipe is connected to the exhaust port of the compressor, and the medium in the compressor flows into the first chamber through the first connecting pipe.
7. The reversing valve according to claim 5, characterized in that: When the pressure relief valve moves to above the first protrusion, the pressure relief valve is in the second state, the first output pipe is connected to the second output pipe through the second chamber, and the first connecting pipe is connected to the third output pipe through the first chamber.
8. The reversing valve according to claim 5, characterized in that: When the pressure relief valve moves to above the second protrusion, the pressure relief valve is in the second state, the second output pipe is connected to the third output pipe through the second chamber, and the first connecting pipe is connected to the first output pipe through the first chamber.
9. The reversing valve according to claim 5, characterized in that: When the pressure relief valve moves to between the first protrusion and the second protrusion, the medium entering the first chamber through the first connecting pipe pushes upward against the pressure relief valve, causing it to switch to the first state. The first connecting pipe is connected to the first output pipe, the second output pipe and the third output pipe respectively through the first chamber and the second chamber.
10. A temperature control system, characterized in that: It comprises the reversing valve as described in any one of claims 1 to 9, and also comprises: a compressor, a condenser and an evaporator, the compressor is respectively connected to the first connecting pipe and one or more of the second connecting pipes, the condenser and the evaporator are respectively connected to another one or more of the second connecting pipes.