Stop valve, air conditioning system and manufacturing method of stop valve

Abstract

The invention provides a stop valve, an air conditioning system and a manufacturing method of the stop valve, and relates to the technical field of stop valves. The stop valve comprises a valve body, a first valve element and a second valve element. The valve body is provided with a first fluid channel and a second fluid channel, and the second fluid channel and the first fluid channel are arranged at intervals and do not communicate with each other. The first fluid channel is provided with at least two first feeding ports which are arranged at intervals; the second fluid channel is provided with at least two second feeding ports which are arranged at intervals; the first valve element can be movably installed on the first fluid channel so as to adjust connection and disconnection between the first feeding ports. The second valve element can be movably installed on the second fluid channel so as to adjust connection and disconnection between the second feeding ports. The stop valve integrates the functions of a high-pressure stop valve and a low-pressure stop valve, the double-valve effect can be achieved at the same time only through one-time assembly, and installation convenience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of stop valves, and in particular to a stop valve, an air conditioning system and a method for manufacturing the stop valve. Background Art

[0002] The stop valve is used to control the on and off of the refrigerant in the air conditioning system. It is divided into high-pressure stop valve and low-pressure stop valve according to the pressure of the circulating refrigerant. The high-pressure stop valve is mainly used to control the on and off of liquid refrigerant, and the low-pressure stop valve is mainly used to control the on and off of gaseous refrigerant. In actual use, the high-pressure stop valve and the low-pressure stop valve need to be manufactured separately, and they need to be installed separately at the outdoor unit during the installation process, which has high manufacturing and installation costs. Summary of the invention

[0003] Based on this, it is necessary to provide a stop valve, an air conditioning system and a method for manufacturing the stop valve to simplify installation, facilitate processing and manufacturing, and reduce production costs.

[0004] A stop valve comprises a valve body, a first valve core and a second valve core; the valve body is constructed with a first fluid channel and a second fluid channel, the second fluid channel is arranged at intervals from the first fluid channel and is not connected to each other; the first fluid channel has at least two first feed ports arranged at intervals; the second fluid channel has at least two second feed ports arranged at intervals; the first valve core can be movably installed in the first fluid channel to adjust the connection and disconnection between each first feed port; the second valve core can be movably installed in the second fluid channel to adjust the connection and disconnection between each second feed port.

[0005] It can be understood that, in the first fluid channel, the setting of at least two first feed ports is conducive to the input and output of the fluid, and the first valve core can control the on and off of each first feed port; in the second fluid channel, the setting of at least two second feed ports is conducive to the input and output of the fluid, and the second valve core can control the on and off of each second feed port. Such a setting is equivalent to the valve body having two non-interfering cut-off flow channels, which can be used in the air-conditioning system to realize the circulation of gaseous refrigerant and liquid refrigerant at the same time; that is, the stop valve integrates the functions of the high-pressure stop valve and the low-pressure stop valve. Therefore, when assembling, there is no need to consider the structural avoidance during the double valve assembly, and only one assembly is required to meet the double valve effect at the same time, thereby improving the convenience of installation.

[0006] In one embodiment, the valve body is provided with a mounting section at the first feed port and / or the second feed port, and the mounting section is protruding outward or recessed inward from the surface of the valve body; each of the mounting sections is constructed with a through hole, and each of the through holes can be connected to the corresponding first fluid channel or the second fluid channel.

[0007] It can be understood that the provision of the installation section facilitates the assembly and communication of the valve body with the external pipeline at the first feed port and / or the second feed port.

[0008] In one of the embodiments, the stop valve also includes a plurality of connectors, each of the connectors corresponds to an installation section, a sealing cap is provided between the connector and the installation section, the connector is threadedly connected to the installation section, the sealing cap is pressed between the connector and the installation section, and the sealing cap blocks the through hole.

[0009] It is understandable that the connection head is provided to facilitate the connection of the installation section with the external pipeline, reduce the impact of the connection on the installation section, and help protect the structure of the installation section. The sealing cap is provided to seal when the pipeline is not connected.

[0010] In one of the embodiments, at least one end of the first fluid channel along the first direction passes through the valve body, and one end is defined as a first assembly end; the first valve core is installed into the first fluid channel from the first assembly end, and a first sealing member is squeezed between the first valve core and the valve body; the stop valve also includes a first valve cover, which is installed on the first assembly end; and / or, at least one end of the second fluid channel along the first direction passes through the valve body, and one end is defined as a second assembly end; the second valve core is installed into the second fluid channel from the second assembly end, and a second sealing member is squeezed between the first valve core and the valve body; the stop valve also includes a second valve cover, which is installed on the second assembly end.

[0011] It can be understood that the setting of the first assembly end provides an installation space for the first valve core, so that the first valve core can be installed in the valve body, the setting of the first sealing component can achieve sealing when the first valve core moves to prevent fluid leakage, and the setting of the first valve cover can block the first fluid channel to enhance the sealing performance; the setting of the second assembly end provides an installation space for the second valve core, so that the second valve core can be installed in the valve body, and the setting of the second sealing component can achieve sealing when the second valve core moves to prevent fluid leakage.

[0012] In one embodiment, in the first fluid channel, the valve body is configured with a first limiting end face, the first valve cover is pressed against the first limiting end face and forms a line seal; and / or, in the second fluid channel, the valve body is configured with a second limiting end face, the second valve cover is pressed against the second limiting end face and forms a line seal, so as to further enhance the sealing performance.

[0013] In one embodiment, the first fluid channel is used for circulating low-pressure fluid, the second fluid channel is used for circulating high-pressure fluid, and the inner diameter of the first fluid channel is greater than the inner diameter of the second fluid channel.

[0014] It can be understood that such a configuration can ensure the fluid flow in the first fluid channel and the second fluid channel.

[0015] In one embodiment, the first fluid channel has at least three first feed ports, wherein at least two of the first feed ports are used to connect with the heat exchange circuit to transport refrigerant, and at least one of the first feed ports is installed with a filling assembly, and the filling assembly is used to inject refrigerant into the first fluid channel.

[0016] It is understandable that at least three first feed ports are provided so that while the heat exchange circuit is connected, a filling component is installed in one of the first feed ports to replenish the refrigerant in time when the refrigerant flow is insufficient.

[0017] The present application also provides an air conditioning system, comprising the above-mentioned stop valve. Therefore, both the gaseous refrigerant and the liquid refrigerant in the air conditioning system can be controlled on and off by the stop valve, achieving a dual purpose effect and being easy to install.

[0018] The present application also provides a method for manufacturing a stop valve, which is used to manufacture the above-mentioned stop valve, and the manufacturing method includes the following steps: obtaining a rod; cutting the rod to obtain a blank; extruding and cutting the blank to form a columnar valve body block; machining the valve body block to form a first fluid channel and a second fluid channel; and installing the first valve core and the second valve core into the first fluid channel and the second fluid channel respectively to form the stop valve.

[0019] It is understandable that such an arrangement allows the obtained blank to be directly extruded without additional processing to shape the blank, and the processing is simple. A stop valve capable of controlling the on-off of two fluid circuits can be obtained through a single processing flow, which has high production efficiency and is conducive to reducing production costs.

[0020] In one of the embodiments, machining the valve body block to form the first fluid channel and the second fluid channel includes: performing a primary hole opening process on the valve body block along a first direction so that the valve body block forms two deep holes arranged at intervals; performing a secondary hole opening process on the valve body block along a second direction so that the valve body block forms at least two first short holes arranged at intervals, at least one of the first short holes is connected to one of the deep holes, and at least another first short hole is connected to another of the deep holes.

[0021] It can be understood that the deep hole and the first short hole are formed by drilling to form the first fluid channel and the second fluid channel.

[0022] In one of the embodiments, the first side wall of the valve body block is cut to reduce its thickness, so that the valve body block has protruding first mounting sections on both sides along the second direction; wherein the first short holes penetrate the first mounting sections respectively corresponding to each other; the second side wall of the valve body block is cut to reduce its thickness, so that the valve body block has protruding second mounting sections on one side along the first direction; wherein the first fluid channel and the second fluid channel respectively penetrate the second mounting sections respectively corresponding to each other, and the second side wall is arranged at an angle to the first side wall.

[0023] It is understandable that the first side wall is cut to reduce the thickness to form the first installation section, which is easy to operate, so that the valve body can be connected to the external pipeline through the first installation section to achieve the communication between the external pipeline and the valve body. The second installation section is processed on the second side wall to facilitate the valve body to be connected to the external pipeline through the second installation section to achieve fluid circulation.

[0024] In one embodiment, machining the valve body block to form the first fluid channel and the second fluid channel comprises: performing three hole opening operations on the valve body block along the third direction, so that the valve body block forms at least one second short hole, and the second short hole is connected to one of the deep holes. Performing thickness reduction cutting on the third side wall of the valve body block, so that at least one side of the valve body block along the third direction forms a protruding third installation section; wherein the second short hole runs through the third installation section.

[0025] It is understandable that the third hole is made along the third direction to form an installation space for installing the filling assembly. The third installation section is processed on the third side wall to facilitate the connection with the connector to form a seal.

[0026] In one embodiment, before cutting the rod to obtain the blank, the manufacturing method also includes the following steps: melting aluminum alloy material to obtain liquid aluminum alloy; obtaining a casting mold; injecting the liquid aluminum alloy into the casting mold, and waiting for solidification to obtain a columnar solid aluminum alloy; and homogenizing annealing the columnar solid aluminum alloy to obtain the rod.

[0027] It is understandable that the aluminum alloy material used for processing has higher strength and lower density, and the processed stop valve is lighter and has lower material cost. The casting mold is convenient for processing the liquid aluminum alloy into a solid aluminum alloy of a certain shape, and then the residual stress can be reduced by homogenization annealing.

[0028] In one of the embodiments, the valve body block is machined to form a first fluid channel and a second fluid channel; before that, the manufacturing method also includes heat treating the valve body block: heating the valve body block once, wherein the valve body block is heated to 530°C within 2 hours and kept warm for 2 hours; cooling the valve body block once, wherein the valve body block is water-cooled to room temperature within 20 seconds; heating the valve body block twice, wherein the valve body block is heated to 180°C within 12 hours and kept warm for 2 hours; heating the valve body block three times, wherein the valve body block is heated to 220°C within 10 minutes and kept warm for 2 hours; and air cooling the valve body block.

[0029] It can be understood that by heating three times and cooling twice to change the metallographic structure inside the valve body block, the residual stress is greatly reduced, making it easier to perform subsequent machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the structure of the stop valve provided for this application;

[0032] Figure 2 A cross-sectional view of a stop valve provided in the present application from one perspective;

[0033] Figure 3 A cross-sectional view from another perspective of the stop valve provided in this application.

[0034] Reference numerals: 100, stop valve; 10, valve body; 101, mounting section; 10101, through hole; 1011, first mounting section; 1012, second mounting section; 1013, third mounting section; 1021, first assembly end; 1022, second assembly end; 103, deep hole; 104, first short hole; 105, second short hole; 11, first fluid channel; 12, second fluid channel; 13, first side wall ; 14. Second side wall; 15. Third side wall; 16. Limiting platform; 17. First limiting end face; 18. Second limiting end face; 111. First feeding port; 121. Second feeding port; 21. First valve core; 22. Second valve core; 30. Connecting head; 41. First valve cover; 42. Second valve cover; 50. Filling assembly; 60. Limiting ring; 71. First sealing member; 72. Second sealing member; 80. Sealing cap. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0040] See also Figures 1 to 3The present application provides a stop valve 100, which includes a valve body 10, a first valve core 21 and a second valve core 22; the valve body 10 is constructed with a first fluid channel 11 and a second fluid channel 12, and the second fluid channel 12 is arranged at intervals from the first fluid channel 11 and is not connected to each other; the first fluid channel 11 has at least two first feed ports 111 arranged at intervals; the second fluid channel 12 has at least two second feed ports 121 arranged at intervals; the first valve core 21 can be movably installed in the first fluid channel 11, and the first valve core 21 can move in the first fluid channel 11 to control the on-off of the first feed port 111; the second valve core 22 can be movably installed in the second fluid channel 12, and the second valve core 22 can move in the second fluid channel 12 to adjust the on-off between each second feed port 121.

[0041] In this way, a first fluid channel 11 and a second fluid channel 12 are simultaneously provided in a valve body 10 so that the valve body 10 can be connected to two different pipelines, and the two different pipelines respectively realize the control of the on-off of the fluid in each pipe through a separate first fluid channel 11 or a second fluid channel 12. Specifically, the first fluid channel 11 is movably installed with a first valve core 21, and the on-off state between each first feed port 111 is switched by the movement of the first valve core 21; similarly, the second fluid channel 12 is movably installed with a second valve core 22, and the on-off state between each second feed port 121 is switched by the movement of the second valve core 22. When the stop valve 100 is applied to an air-conditioning system, it can replace the high-pressure stop valve 100 and the low-pressure stop valve 100 in the heat exchange circuit of the air-conditioning system. Exemplarily, the pipeline where the low-pressure stop valve 100 is located is connected to the first fluid channel 11, and the movement of the first valve core 21 forms a hard seal with the valve body 10, thereby controlling the flow of the fluid in the pipeline; the pipeline where the high-pressure stop valve 100 is located is connected to the second fluid channel 12, and the movement of the second valve core 22 forms a hard seal with the valve body 10, thereby controlling the flow of the fluid in the pipeline. When installing the air conditioner, only one installation of the stop valve 100 is required to realize the functions of the traditional high and low pressure valves, reducing two installation steps, and there is no need to consider structural avoidance with other stop valves 100, so the installation is more convenient and quick, which is conducive to improving assembly efficiency.

[0042] like Figures 1 to 3 As shown, for the sake of convenience of explanation, the second direction is set to the x-axis, the third direction is set to the y-axis, and the first direction is set to the z-axis. At the same time, taking the valve body 10 as a rectangular structure as an example, the walls of the valve body 10 on both sides along the x-axis direction are set to the first side wall 13, the walls of the valve body 10 on both sides along the z-axis direction are set to the second side wall 14, and the walls of the valve body 10 on both sides along the y-axis direction are set to the third side wall 15.

[0043] like Figure 2As shown, in an optional embodiment, the first fluid channel 11 is used to circulate low-pressure fluid, and the second fluid channel 12 is used to circulate high-pressure fluid. In order to ensure the CV value of the circulation channel, the inner diameter of the first fluid channel 11 is d1, and the inner diameter of the second fluid channel is d2, and d1>d2 is satisfied. In this way, in the same valve body, the first fluid channel 11 has a larger inner diameter to increase the circulation space and ensure the flow rate of the low-pressure fluid, and the second fluid channel 12 has a smaller inner diameter, which can make the high-pressure fluid flow faster to reduce pressure loss, and can also reduce the use of materials when opening the hole.

[0044] like Figures 1 to 3 As shown, in an optional embodiment, the valve body 10 is provided with a mounting section 101 protruding from the first feed port 111 and / or the second feed port 121; each mounting section 101 is constructed with a through hole 10101 penetrating along its own extension direction, and each through hole 10101 is connected to the corresponding first fluid channel 11 or second fluid channel 12, so that the mounting section 101 can be used to connect with an external pipeline. The mounting section 101 is protruding from the valve body 10, which can leave a space for installation and connection, and at the same time, it is also beneficial to increase the connection area between the valve body 10 and the external pipeline, making the connection more reliable. The external pipeline can be connected to the first fluid channel 11 or the second fluid channel 12 through the mounting section 101. In other embodiments, the mounting section 101 can also be configured to be formed by being recessed inward from the surface of the valve body 10, and the external pipeline or pipeline connector is extended into the mounting section 101 and sealed to achieve the connection between the external pipeline and the first fluid channel 11 or the second fluid channel 12.

[0045] Furthermore, according to the different positions of the first feeding port 111 and / or the second feeding port 121, the corresponding position of the installation section 101 is also different, and is divided into a first installation section 1011, a second installation section 1012 and a third installation section 1013. The first installation section 1011 is located on the first side wall 13, the second installation section 1012 is located on the second side wall 14, and the third installation section 1013 is located on the third side wall 15.

[0046] like Figures 1 to 3 As shown, in a further embodiment, the stop valve 100 further includes a plurality of connectors 30, each connector 30 corresponds to a mounting section 101, and each connector 30 is detachably connected to the corresponding mounting section 101. In this way, the connector 30 is connected to the mounting section 101 and the external pipeline at the same time to realize the assembly of the mounting section 101 and the external pipeline, which is beneficial to protect the structure of the mounting section 101. At the same time, the detachable connection method facilitates the replacement of the connecting pipeline at any time. Exemplarily, the connector 30 is configured with an internal thread, and the mounting section 101 and the external pipeline are respectively configured with an external thread, and the connection between the mounting section 101 and the external pipeline and the connector 30 is realized by threaded matching. .

[0047] Furthermore, a sealing cap 80 is provided between the connector 30 and the mounting section 101. The connector 30 and the mounting section 101 are threadedly connected. The sealing cap 80 is pressed between the connector 30 and the mounting section 101. The sealing cap 80 blocks the through hole 10101 so as to seal before the mounting section 101 is connected to an external pipeline, and protects the internal structure of the valve body 10 when the pipeline is not connected. When the mounting section 101 is connected to an external pipeline, the sealing cap 80 needs to be disassembled and removed.

[0048] In an optional embodiment, the installation section 101 is integrally formed with the valve body 10. In this way, the installation section 101 is formed while the valve body 10 is being processed, which can reduce the processing steps and improve the processing efficiency.

[0049] In another optional embodiment, the mounting section 101 is formed by protruding outward from the surface of the valve body 10, and the mounting section 101 and the valve body 10 are formed separately. In this way, it is convenient to replace the mounting section 101 after it is damaged, and there is no need to replace the entire valve body 10 due to damage to the mounting section 101, which is conducive to reducing costs. Exemplarily, the mounting section 101 is welded, bonded or detachably connected to the valve body 10.

[0050] like Figures 1 to 3 As shown, in an optional embodiment, at least one end of the first fluid channel 11 along the first direction passes through the valve body 10, and one end is defined as a first assembly end 1021; the first valve core 21 is installed in the first fluid channel 11 from the first assembly end 1021, and a first sealing member 71 is squeezed between the valve body 10; the stop valve 100 also includes a first valve cover 41, and the first valve cover 41 is installed on the first assembly end 1021. In this way, the setting of the first assembly end 1021 facilitates the installation of the first valve core 21 in the first fluid channel 11, and the port on the side where the first valve core 21 is located is blocked by the first valve cover 41, so as to ensure the sealing at the port and prevent fluid leakage.

[0051] Similarly, if Figures 1 to 3 As shown, at least one end of the second fluid channel 12 along the first direction penetrates the valve body 10, and one end is defined as a second assembly end 1022; the second valve core 22 is installed in the second fluid channel 12 from the second assembly end 1022, and a second sealing member 72 is squeezed between the valve body 10; the stop valve 100 also includes a second valve cover 42, and the second valve cover 42 is installed on the second assembly end 1022. The arrangement in the second fluid channel 12 can refer to the first fluid channel 11, and will not be repeated here.

[0052] Furthermore, a mounting hole is constructed on one side of the valve body along the z-axis direction away from the first assembly end 1021 and the second assembly end 1022. In the air-conditioning system, the stop valve 100 can be installed on the air-conditioning panel through the mounting hole, and bolts, screws, etc. can be used to pass through the air-conditioning panel and extend into the inner thread of the mounting hole to achieve the connection between the two.

[0053] like Figure 3 As shown, in a more specific embodiment, the stop valve 100 further includes a limit ring 60, and the inner walls of the first fluid channel 11 and the second fluid channel 12 are configured with a limit groove to install the limit ring 60. In the first fluid channel 11, the limit ring 60 is located between the first valve cover 41 and the first valve core 21 to limit the movement of the first valve core 21 and prevent the first valve core 21 from coming out of the first fluid channel 11. In the second fluid channel 12, the limit ring 60 is located between the second valve cover 42 and the second valve core 22 to limit the movement of the second valve core 22 and prevent the second valve core 22 from coming out of the second fluid channel 12.

[0054] In a further embodiment, in the first fluid channel 11, the valve body 10 is configured with a first limiting end face 17, and the first valve cover 41 is pressed against the first limiting end face 17 to form a line seal; in the second fluid channel 12, the valve body 10 is configured with a second limiting end face 18, and the second valve cover 42 is pressed against the second limiting end face 18 to form a line seal. In this way, taking the first limiting end face 17 as an example, the line seal has a good sealing effect, and a further sealing effect can be achieved on the basis of the first sealing member 71. Even if the fluid leaks from the first sealing member 71 to between the first valve cover 41 and the first valve core 21, the first valve cover 41 can form a line seal with the first limiting end face 17 to block the leakage channel of the fluid. Specifically, the valve body 10 can form a conical first limiting end face 17 and press fit with the right-angle edge of the first valve cover 41 to achieve a line seal. The cooperation between the second limiting end face 18 and the second valve cover 42 also has a similar effect, which will not be repeated here.

[0055] like Figure 3 As shown, in a further embodiment, in the first fluid channel 11, the valve body 10 is respectively configured with a limit platform 16, and the first valve core 21 has a first position. In the first position, the stop valve 100 disconnects the fluid connection, and the first valve core 21 is pressed against the limit platform 16 to form a hard seal. In this way, the limit platform 16 has a limiting effect on the movement of the first valve core 21, and the first valve core 21 can abut against the limit platform 16 and form a hard seal with the limit platform 16, thereby blocking the flow of the fluid and achieving a stop effect.

[0056] Similarly, a corresponding limit platform 16 may also be provided in the second fluid channel 12 to limit and seal the second valve core 22 . For details, please refer to the setting of the limit platform 16 in the first fluid channel 11 , which will not be described in detail here.

[0057] Further, taking the first fluid channel 11 as an example, the first fluid channel 11 includes a deep hole 103 and a short hole, the short hole is connected to the deep hole 103 and is arranged at an angle, the first valve core 21 is penetrated in the deep hole 103, and can move along the axial direction of the deep hole 103, and the first valve core 21 and the hole wall of the deep hole 103 are sealed and connected to prevent fluid leakage. The end of the short hole away from the deep hole 103 serves as a first feed port 111. In some embodiments, the number of short holes is two and they are arranged at intervals along the axial direction of the deep hole 103, the axes of each short hole are parallel to each other, and each corresponds to a first feed port 111, and each first feed port 111 is located on the first side wall 13 of the valve body 10 on one side along the x-axis direction. In an alternative embodiment, the number of short holes is one, and at least one end of the deep hole 103 along its own axial direction (i.e., the z-axis direction) penetrates the second side wall 14 of the valve body 10. At this time, the end of the short hole away from the deep hole 103 and the end of the deep hole 103 along its own axial direction respectively correspond to a first feed port 111. The structural arrangement of the second fluid channel 12 can also refer to the first fluid channel 11, and will not be repeated here. Specifically, the short hole located at the first side wall 13 is the first short hole 104, and the short hole located at the third side wall 15 is the second short hole 105.

[0058] like Figure 2 and Figure 3 As shown, in a further embodiment, the first fluid channel 11 has at least three first feed ports 111, wherein at least two first feed ports 111 are used to communicate with the heat exchange circuit to transport the refrigerant, and at least one first feed port 111 is installed with a filling assembly 50, and the filling assembly 50 is used to inject the refrigerant into the first fluid channel 11. In this way, on the basis of at least two first feed ports 111 being connected with the pipeline in the heat exchange circuit, at least one first feed port 111 is added to form an assembly space to install the filling assembly 50. Since the gaseous fluid is easy to leak, the filling assembly 50 is conducive to replenishing the gaseous fluid when the flow rate is insufficient.

[0059] In an optional embodiment, the valve body 10 can be processed and formed at one time, and then the first fluid channel 11 and the second fluid channel 12 can be formed by machining. In another optional embodiment, the valve body 10 can also be processed in parts and then assembled and connected. Exemplarily, the valve body 10 includes a first part and a second part, one of which is configured with one first feed port 111 and one second feed port 121, and the other is configured with another first feed port 111 and another second feed port 121. The first part and the second part are assembled correspondingly to form a complete first fluid channel 11 and a second fluid channel 12. The arrangement of the parts makes the processing easier and facilitates the replacement of the corresponding first part or second part when the valve body 10 is damaged.

[0060] The present application also provides an air conditioning system, including the above-mentioned stop valve 100. In this way, the air conditioning system can simultaneously realize the control of the on-off of two different pipelines through one stop valve 100. At the same time, during the actual assembly, only one stop valve 100 provided by the present application needs to be installed, and the number of installations is correspondingly reduced, which is conducive to improving the assembly efficiency.

[0061] In a specific embodiment, the air-conditioning system also includes a compressor, a first heat exchanger and a second heat exchanger; the two first feed ports 111 in the stop valve 100 are connected between the compressor and the second heat exchanger, and the two second feed ports 121 in the stop valve 100 are connected between the second heat exchanger and the first heat exchanger to define a heat exchange circuit.

[0062] Generally, the air conditioning system has a cooling mode and a heating mode. In the cooling mode, the compressor outputs a high-temperature and high-pressure gaseous refrigerant, which is input into the first heat exchanger, and after heat exchange in the first heat exchanger, it is cooled down to become a medium-temperature liquid refrigerant; then, the medium-temperature liquid refrigerant is input into the second heat exchanger after throttling and reducing pressure, and exchanges heat with the external air. After absorbing heat, the refrigerant evaporates into a gaseous state and is sucked back into the liquid reservoir to continue the refrigeration cycle. In the heating mode, the compressor outputs a high-temperature gaseous refrigerant, which is input into the second heat exchanger, and exchanges heat with the external air. The gaseous refrigerant releases heat and becomes a medium-temperature liquid refrigerant. Then, after throttling and reducing pressure, the medium-temperature liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant and flows into the first heat exchanger. After absorbing heat and evaporating into a gaseous state in the first heat exchanger, it returns to the liquid reservoir to continue the heating cycle.

[0063] Therefore, the two first feed ports 111 in the stop valve 100 are connected between the four-way valve and the second heat exchanger, so as to control the on-off of the gaseous refrigerant between the compressor and the second heat exchanger; the two second feed ports 121 in the stop valve 100 are connected between the second heat exchanger and the first heat exchanger, so as to control the on-off of the liquid refrigerant between the second heat exchanger and the first heat exchanger. More specifically, the air conditioning system has a throttling element, which is connected between the first heat exchanger and the second heat exchanger to throttle and reduce the pressure of the refrigerant. Exemplarily, the throttling element is set as an expansion valve, a capillary tube, etc., and the specific second feed port 121 is connected between the throttling element and the second heat exchanger.

[0064] The present application also provides a method for manufacturing a stop valve 100, which is used to manufacture the above-mentioned stop valve 100, and the manufacturing method includes the following steps: obtaining a rod; cutting the rod to obtain a blank; extruding and cutting the blank to form a valve body block; machining the valve body block to form a first fluid channel 11 and a second fluid channel 12; and respectively installing the first valve core 21 and the second valve core 22 into the first fluid channel 11 and the second fluid channel 12 to form the stop valve 100.

[0065] It should be noted that the stop valve 100 in the present application is made of aluminum alloy, which is a light metal material, so that the overall weight of the stop valve 100 is relatively light, and the price of aluminum alloy is relatively low, which is conducive to reducing production costs. Therefore, the rod is mainly a rod formed by aluminum alloy. It is convenient to obtain multiple blanks by cutting the rod, and then the individual blanks are extruded to form profiles, and cut to form multiple columnar valve body blocks, and then the valve body blocks are machined, such as opening holes, cutting, etc., to form a first circulation channel and a second circulation channel. Finally, the first valve core 21 and the second valve core 22 are respectively installed in the first fluid channel 11 and the second fluid channel 12, and the corresponding first valve cover 41, the second valve cover 42 and the connector 30 are connected to form a complete stop valve 100. Among them, the aluminum alloy can be directly extruded after the blank is obtained by processing, and the steps are simple, and no additional molding process is required, which is conducive to improving production efficiency.

[0066] In an optional embodiment, before cutting the rod to obtain the blank, the manufacturing method further includes the following steps: melting the aluminum alloy material to obtain a liquid aluminum alloy; obtaining a casting mold; injecting the liquid aluminum alloy into the casting mold, and waiting for solidification to obtain a columnar solid aluminum alloy; homogenizing and annealing the columnar solid aluminum alloy to obtain a rod. In this way, the casting mold facilitates the solidification and molding of the liquid aluminum alloy to form a solid aluminum alloy of a specific shape. Homogenizing and annealing the solid aluminum alloy can eliminate or reduce intracrystalline segregation, thereby improving the performance of the solid aluminum alloy, so that the organizational structure in the solid aluminum alloy is homogenized. In a specific embodiment, homogenizing and annealing the columnar solid aluminum alloy includes: using 6061 aluminum alloy as the columnar solid aluminum alloy; heat-insulating the columnar solid aluminum alloy at 520°C-540°C for 12 hours; cooling to 300°C with the furnace; and air cooling to room temperature.

[0067] In a further embodiment, in the step of cutting the rod to obtain a blank, the blank is a special-shaped structure, that is, a blank of a certain shape is obtained to facilitate subsequent further processing of the blank and to facilitate the formation of a columnar valve body block.

[0068] In an optional embodiment, extruding the blank includes: obtaining an extrusion die; placing the blank into the extrusion die; heating the blank to 450°C-550°C, and extruding the blank using a pressure of not less than 2000T; wherein the temperature of the extrusion die is 400°C-500°C. In this way, the high temperature can soften the organizational structure of the blank to a certain extent, and under the action of a higher extrusion force, the blank is formed into a specific shape through the extrusion die. For example, a solid aluminum strip can be formed to facilitate subsequent cutting into multiple valve body blocks to form the preliminary contour shape of the valve body 10. In a specific embodiment, the blank can be heated to 450°C, 500°C or 550°C; the blank can be extruded using a pressure of 2000T, 3000T or 5000T.

[0069] In an optional embodiment, after forming the columnar valve body block, the manufacturing method further includes: heat treating the valve body block. Thus, the organization structure of the valve body block can be improved by heat treating the valve body block, which is conducive to obtaining a valve body 10 with excellent performance.

[0070] In a specific embodiment, the heat treatment of the valve body block includes: heating the valve body block once, wherein the valve body block is heated to 530°C within 2 hours and kept warm for 2 hours; cooling the valve body block once, wherein the valve body block is water-cooled to room temperature within 20 seconds; heating the valve body block twice, wherein the valve body block is heated to 180°C within 12 hours and kept warm for 2 hours; heating the valve body block three times, wherein the valve body block is heated to 220°C within 10 minutes and kept warm for 2 hours; and air cooling the valve body block. In this way, by continuously heating and cooling the valve body block, residual stress can be effectively reduced, deformation and cracking of the valve body block surface can be reduced, and subsequent machining treatments such as drilling and cutting of the valve body block can be facilitated.

[0071] In an optional embodiment, machining the valve body block to form the first fluid channel 11 and the second fluid channel 12 includes: performing a primary hole drilling process on the valve body block along the first direction so that the valve body block forms two deep holes 103; performing a secondary hole drilling process on the valve body block along the second direction so that the valve body block forms at least two first short holes 104 arranged at intervals, at least one first short hole 104 is connected to one of the deep holes 103, and at least another first short hole 104 is connected to another of the deep holes 103. Thus, taking the first fluid channel 11 as an example, the deep hole 103 is machined along the first direction, one end of the deep hole 103 can form a first discharge port, and the other end of the deep hole 103 is used to install the first valve core 21 and can be blocked by the first valve cover 41; along the second direction, the first short hole 104 connected to the deep hole 103 is machined on the valve body 10, which is conducive to forming another first discharge port, and the connection between the deep hole 103 and the first short hole 104 is conducive to forming the first fluid channel 11. The processing of the second fluid channel 12 may refer to the first fluid channel 11 , and will not be described in detail herein.

[0072] In other embodiments, the valve body block may be punched once in the first direction to form two deep holes 103 arranged at intervals, each deep hole 103 only has one end passing through the valve body block, one of the deep holes 103 is used to install the first valve core 21, and the other deep hole 103 is used to install the second valve core 22. The valve body block is punched twice in the second direction to form at least four first short holes 104 arranged at intervals in the valve body block. At least two of the first short holes 104 are connected to one of the deep holes 103 and are arranged at an angle to form a first fluid channel 11, and one end of each first short hole 104 along its own axial direction away from the deep hole 103 is defined as a first discharge port; at least another two first short holes 104 are connected to another of the deep holes 103 and are arranged at an angle to form a second fluid channel 12, and one end of each first short hole 104 along its own axial direction away from the corresponding deep hole 103 is defined as a second discharge port.

[0073] In a further embodiment, machining the valve body block to form the first fluid channel 11 and the second fluid channel 12 includes: performing three hole-opening operations on the valve body block along the third direction, so that the valve body block forms at least one second short hole 105, and the second short hole 105 is connected to one of the deep holes 103. In this way, by machining the second short hole 105, it is convenient to add at least one first feed port 111 for installing the filling assembly 50; the second short hole 105 is connected to the deep hole 103, so that the filling assembly 50 can fill the deep hole 103 with refrigerant. In more embodiments, a plurality of second short holes 105 arranged at intervals are machined on the valve body block, and the plurality of second short holes 105 extend along the third direction, and a plurality of first feed ports 111 are correspondingly formed at the third side wall 15 to install a plurality of filling assemblies 50.

[0074] like Figure 1 and Figure 2 As shown, in an optional embodiment, machining the valve body block to form the first fluid channel 11 and the second fluid channel 12 further includes: cutting the first side wall 13 of the valve body block to reduce the thickness, so that the valve body block is formed with protruding first mounting sections 1011 on both sides along the second direction of the valve body block; wherein the first short holes 104 penetrate the first mounting sections 1011 corresponding to each other. In this way, the two side walls of the valve body block on both sides along the x-axis direction are both first side walls 13. Since the first short holes 104 are respectively opened in the two first side walls 13, when the first side wall 13 is cut, the first short holes 104 are cut and reserved to form the first mounting section 1011 protruding outward from the first side wall 13, so as to protect the structure of the first short hole 104, ensure the extension length of the first short hole 104, and facilitate the external pipeline to be connected to the first short hole 104 through the first mounting section 1011. In addition, by cutting the first side wall 13 to reduce its thickness, the installation section 101 on the first side wall 13 is integrally formed with the valve body 10 , thereby reducing the number of installation and connection steps.

[0075] like Figure 1 and Figure 2 As shown, in an optional embodiment, the axial direction of one of the first feed ports 111 is the same as the first direction, and the axial direction of one of the second feed ports 121 is the same as the first direction; that is, along the first direction, two deep holes 103 are machined to penetrate the valve body block, and one end of the two deep holes 103 along their own axial direction is respectively defined as one of the first feed ports 111 and one of the second feed ports 121. Based on this, machining the valve body block to form the first fluid channel 11 and the second fluid channel 12 also includes: cutting the second side wall 14 of the valve body block to reduce the thickness, so that a protruding second installation section 1012 is formed on one side of the valve body block along the axial direction of the first fluid channel 11 and / or the second fluid channel 12; wherein the first fluid channel 11 and the second fluid channel 12 respectively penetrate the corresponding second installation sections 1012, and the second side wall 14 is arranged at an angle to the first side wall 13. In this way, the side walls of the valve body block on both sides along the z-axis direction are the second side walls 14. Since the second side wall 14 is provided with a deep hole 103, when the second side wall 14 is cut, the deep hole 103 is cut and retained to form a second installation section 1012 protruding outward from the second side wall 14, so as to protect the structure of the deep hole 103, ensure the extension length of the deep hole 103, and facilitate the external pipeline to be connected to the deep hole 103 through the second installation section 1012. In addition, by cutting the thickness of the second side wall 14, the second installation section 1012 on the second side wall 14 is integrally formed with the valve body 10, reducing the installation and connection steps.

[0076] like Figure 1 and Figure 3 As shown, in an optional embodiment, machining the valve body block to form the first fluid channel 11 and the second fluid channel 12 further includes: cutting the third side wall 15 of the valve body block to reduce the thickness, so that at least one side of the valve body block along the third direction is formed with a protruding installation section 101. In this way, the side walls of the valve body block on both sides along the y-axis direction are the second side walls 14. Since the third side wall 15 is provided with a second short hole 105, when the third side wall 15 is cut, the second short hole 105 is cut and retained to form a third installation section 1013 protruding outward from the third side wall 15, so as to protect the structure of the second short hole 105 and ensure the extension length of the third short hole, so as to form a sufficient installation space for installing the filling assembly 50. In addition, by cutting the third side wall 15 to reduce the thickness, the third installation section 1013 on the third side wall 15 is integrally formed with the valve body 10, thereby reducing the installation and connection steps.

[0077] In summary, after cutting and forming each mounting section 101 on the valve body block, a threaded structure can be turned on the outer wall of the corresponding mounting section 101 to connect with the corresponding connector 30; or, a specific structure can be turned on the mounting section 101 to facilitate matching with the corresponding connector 30. Further, when processing each deep hole 103, a limit groove for installing the limit ring 60 can be turned on the hole wall of each deep hole 103. In this way, after the valve core corresponding to each deep hole 103 is installed, the corresponding limit ring 60 and valve cover are installed, thereby forming a stop valve 100 for an air conditioning system.

[0078] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A stop valve, characterized in that: include: A valve body (10) is constructed with a first fluid channel (11) and a second fluid channel (12), wherein the second fluid channel (12) and the first fluid channel (11) are arranged at intervals and are not connected to each other; the first fluid channel (11) has at least two first feed ports (111) arranged at intervals; and the second fluid channel (12) has at least two second feed ports (121) arranged at intervals; A first valve core (21) is movably mounted on the first fluid channel (11) to adjust the opening and closing between the first feeding ports (111); The second valve core (22) can be movably mounted on the second fluid channel (12) to adjust the opening and closing between the second feeding ports (121).

2. The stop valve according to claim 1, characterized in that: The valve body (10) is provided with a mounting section (101) at the first feeding port (111) and / or the second feeding port (121), and the mounting section (101) is formed by convexly protruding outwards or concavely protruding inwards from the surface of the valve body (10); Each of the mounting sections (101) is configured with a through hole (10101), and each of the through holes (10101) can be connected to the corresponding first fluid channel (11) or the second fluid channel (12).

3. The stop valve according to claim 2, characterized in that: The stop valve (100) further comprises a plurality of connectors (30), each of the connectors (30) corresponding to one of the mounting sections (101), a sealing cap (80) being provided between the connectors (30) and the mounting section (101), the connectors (30) being threadedly connected to the mounting section (101), the sealing cap (80) being pressed between the connectors (30) and the mounting section (101), and the sealing cap (80) blocking the through hole (10101).

4. The stop valve according to claim 1, characterized in that: At least one end of the first fluid channel (11) along the first direction passes through the valve body (10), wherein one end is defined as a first assembly end (1021); the first valve core (21) is installed into the first fluid channel (11) from the first assembly end (1021), and a first sealing member (71) is squeezed between the first valve core (21) and the valve body (10); the stop valve (100) further comprises a first valve cover (41), and the first valve cover (41) is installed on the first assembly end (1021); And / or, at least one end of the second fluid channel (12) along the first direction passes through the valve body (10), and one end is defined as a second assembly end (1022); the second valve core (22) is installed into the second fluid channel (12) from the second assembly end (1022), and a second sealing member (72) is squeezed between the second valve core and the valve body (10); the stop valve (100) further includes a second valve cover (42), and the second valve cover (42) is installed on the second assembly end (1022).

5. The stop valve according to claim 4, characterized in that: In the first fluid channel (11), the valve body (10) is configured with a first limiting end surface (17), and the first valve cover (41) is pressed against the first limiting end surface (17) to form a line seal; and / or, In the second fluid channel (12), the valve body (10) is configured with a second limiting end surface (18), and the second valve cover (42) is pressed against the second limiting end surface (18) to form a line seal.

6. The stop valve according to claim 1, characterized in that: The first fluid channel (11) is used for circulating low-pressure fluid, and the second fluid channel (12) is used for circulating high-pressure fluid. The inner diameter of the first fluid channel (11) is greater than the inner diameter of the second fluid channel (12).

7. The stop valve according to claim 1, characterized in that: The first fluid channel (11) has at least three first feed ports (111), wherein at least two of the first feed ports (111) are used to be connected to the heat exchange circuit to transport refrigerant, and at least one of the first feed ports (111) is installed with a filling component (50), and the filling component (50) is used to inject refrigerant into the first fluid channel (11).

8. An air conditioning system, characterized in that: The invention comprises the stop valve (100) according to any one of claims 1 to 7.

9. A method for manufacturing a stop valve, characterized in that: Used to manufacture the stop valve (100) according to any one of claims 1 to 7, the manufacturing method comprises the following steps: Get the rods; cutting the rod to obtain a blank; Extruding and cutting the blank to form a columnar valve body block; Machining the valve body block to form a first fluid channel (11) and a second fluid channel (12); The first valve core (21) and the second valve core (22) are respectively installed in the first fluid channel (11) and the second fluid channel (12) to form the stop valve (100).

10. The manufacturing method according to claim 9, characterized in that: The machining of the valve body block to form the first fluid channel (11) and the second fluid channel (12) comprises: Performing a hole-opening process on the valve body block along a first direction so that the valve body block is formed with two deep holes (103) arranged at intervals; The valve body block is subjected to secondary hole opening processing along the second direction so that the valve body block is formed with at least two first short holes (104) arranged at intervals, at least one of the first short holes (104) is connected to one of the deep holes (103), and at least another one of the first short holes (104) is connected to another one of the deep holes (103).

11. The manufacturing method according to claim 10, characterized in that: The machining of the valve body block to form the first fluid channel (11) and the second fluid channel (12) also includes: The first side wall (13) of the valve body block is cut to reduce thickness, so that protruding first mounting sections (1011) are formed on both sides of the valve body block along the second direction; wherein the first short holes (104) penetrate the first mounting sections (1011) respectively corresponding to each other; The second side wall (14) of the valve body block is cut to reduce its thickness, so that a protruding second mounting section (1012) is formed on one side of the valve body block along the first direction; wherein the first fluid channel (11) and the second fluid channel (12) respectively penetrate the corresponding second mounting sections (1012), and the second side wall (14) is arranged at an angle to the first side wall (13).

12. The manufacturing method according to claim 10, characterized in that: The machining of the valve body block to form the first fluid channel (11) and the second fluid channel (12) comprises: performing three hole-opening operations on the valve body block along a third direction so that the valve body block forms at least one second short hole (105), wherein the second short hole (105) is connected to one of the deep holes (103); The third side wall (15) of the valve body block is cut to reduce thickness, so that a protruding third installation section (1013) is formed on at least one side of the valve body block along the third direction; wherein the second short hole (105) passes through the third installation section (1013).

13. The manufacturing method according to claim 9, characterized in that: Before cutting the bar to obtain the blank, the manufacturing method further comprises the following steps: Melting aluminum alloy materials to obtain liquid aluminum alloy; Obtain a casting mold; Injecting liquid aluminum alloy into the casting mold and waiting for solidification to obtain columnar solid aluminum alloy; The columnar solid aluminum alloy is subjected to homogenization annealing to obtain the rod.

14. The manufacturing method according to claim 9, characterized in that: The valve body block is machined to form a first fluid channel (11) and a second fluid channel (12); before that, the manufacturing method further comprises heat treating the valve body block: Heating the valve body block once, wherein the valve body block is heated to 530° C. within 2 hours and kept at this temperature for 2 hours; Cooling the valve body block once, wherein the valve body block is water-cooled to room temperature within 20 seconds; Secondarily heating the valve body block, wherein the valve body block is heated to 180° C. within 12 hours and kept at this temperature for 2 hours; Heating the valve body block three times, wherein the valve body block is heated to 220° C. within 10 minutes and kept at this temperature for 2 hours; The valve body block is cooled by air.

Images