Filtering and throttling device and air conditioner

Abstract

The utility model provides a filtering and throttling device and an air conditioner, the filtering and throttling device comprises a shell, a filtering piece and a valve element assembly, and the shell forms a cavity with an input end and an output end; the filtering piece is arranged in the cavity and used for filtering fluid flowing from the input end to the output end; a throttling cavity is formed in the valve element assembly, the through-flow section area of the throttling cavity is smaller than that of the input end, and the valve element assembly is movably arranged in the cavity and used for isolating the input end from the output end or enabling the input end to communicate with the output end through the throttling cavity. According to the filtering and throttling device, the filtering function and the throttling function are combined in one filtering and throttling device, the workload caused by assembly connection in the air conditioner production process can be reduced, in addition, due to the fact that the number of connecting parts is reduced, the fluid leakage risk of the connecting parts is reduced, and the product quality is improved.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioners, and particularly relates to a filtering throttle device and an air conditioner. Background Art

[0002] As a device for adjusting parameters such as the temperature and humidity of indoor air, an air conditioner has now become an essential household appliance for every household.

[0003] In the refrigeration cycle system of an air conditioner, a filter and a throttle are usually connected in series in the refrigerant circulation path. Among them, the filter is used to filter impurities in the refrigerant, and the throttle is used to adjust the flow rate and pressure of the refrigerant. At present, the filter and throttle in an air conditioner are both independent components. During the production process, it is necessary to connect the two to the refrigerant circulation path separately, resulting in troublesome assembly. Moreover, due to the large number of connection parts, the risk of leakage at the connection parts is also increased. Utility Model Content

[0004] The embodiments of this application provide a filtering throttle device and an air conditioner, which can solve the problems of low assembly efficiency and high leakage risk caused by the separate design of the filter and throttle in existing air conditioners.

[0005] To achieve the above object, this application provides the following technical solutions:

[0006] A filtering throttle device applied to an air conditioner, comprising:

[0007] A housing, forming a cavity with an input end and an output end;

[0008] A filter element, disposed in the cavity, for filtering the fluid flowing from the input end to the output end;

[0009] A valve core assembly, forming a throttle cavity, the cross-sectional area of the throttle cavity is smaller than the cross-sectional area of the input end, and the valve core assembly is movably disposed in the cavity to isolate the input end and the output end, or to connect the input end to the output end through the throttle cavity.

[0010] In some embodiments, the valve core assembly includes a valve core movably disposed in the cavity, and the valve core includes:

[0011] A valve core body, forming the throttle cavity and an opening part that communicate with each other, and there is a gap between the valve core body and the side wall of the cavity;

[0012] A sealing connection part, formed on the outer wall of the valve core body, and the opening part and the input end are located on opposite sides of the sealing connection part;

[0013] When the valve core moves to the first position, the sealed connection part is in sealed connection with the side wall of the cavity to block the opening part and the input end; when the valve core moves to the second position, the sealed connection part and the side wall of the cavity are in clearance fit, so that the opening part and the input end are communicated.

[0014] In some embodiments, the cavity has a first circumferential side wall and a second circumferential side wall. The first circumferential side wall and the second circumferential side wall are arranged in sequence along the moving direction of the valve core. The inner diameter of the first circumferential side wall is smaller than that of the second circumferential side wall. The first circumferential side wall is used for sealed connection with the sealed connection part, and the second circumferential side wall is used for clearance fit with the sealed connection part.

[0015] In some embodiments, the cavity further has a third circumferential side wall. The third circumferential side wall, the first circumferential side wall, and the second circumferential side wall are arranged in sequence along the moving direction of the valve core. The inner diameter of the third circumferential side wall is larger than that of the first circumferential side wall. The input end is opened on the third circumferential side wall, and the throttling cavity is arranged on the side of the sealed connection part away from the input end.

[0016] In some embodiments, the cavity further forms a guiding groove. The valve core body further includes a first end portion in its moving direction, and the first end portion is inserted into the guiding groove. The guiding groove includes a fourth circumferential side wall arranged around the first end portion, and the fourth circumferential side wall is in sealed fit with the first end portion.

[0017] In some embodiments, the valve core body further includes a second end portion opposite to the first end portion. The housing further includes a fifth circumferential side wall arranged around the second end portion, and the fifth circumferential side wall is in sealed fit with the second end portion.

[0018] In some embodiments, the valve core assembly further includes an elastic member. One end of the elastic member is connected to the valve core, and the other end is connected to the housing;

[0019] When the valve core moves to the first position, the elastic member is in a normal state. When the valve core moves to the second position, the elastic member generates elastic deformation.

[0020] In some embodiments, the filter element is arranged between the throttling cavity and the output end.

[0021] In some embodiments, the filter element is in a cup shape with an opening facing the throttling cavity.

[0022] An air conditioner includes a refrigeration system, and the refrigeration system includes the above-mentioned filter throttling device.

[0023] The filtering throttling device and air conditioner provided by the embodiments of the present application combine the filtering and throttling functions in one filtering throttling device, which can reduce the workload caused by assembly connection during the production of the air conditioner. In addition, since the number of connection parts is reduced, the risk of fluid leakage at the connection parts is also reduced, improving the product quality. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0025] In order to more comprehensively understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals in the following description represent the same parts.

[0026] Figure 1 It is a schematic structural diagram of the filtering throttling device provided by the embodiments of the present application.

[0027] Figure 2 It is a top view of the filtering throttling device provided by the embodiments of the present application.

[0028] Figure 3 It is Figure 2 a cross-sectional view of the shown filtering throttling device along the A-A direction.

[0029] Figure 4 It is a cross-sectional view of the filtering throttling device provided by the embodiments of the present application in another state.

[0030] Figure 5 It is a schematic structural diagram of the air conditioner provided by the embodiments of the present application.

[0031] Figure 6 It is a schematic structural diagram of the refrigeration system provided by the embodiments of the present application.

[0032] Description of the Reference Numerals:

[0033] 10. Air conditioner;

[0034] 100. Filtering throttling device; 200. Refrigeration system;

[0035] 110. Housing; 120. Filter element; 130. Spool assembly;

[0036] 111. Input end; 112. Output end; 113. Cavity; 131. Throttle cavity; 132. Spool; 133. Elastic member; 210. Compressor; 220. Flow path switching valve; 230. First heat exchanger group; 240. Second heat exchanger group 240;

[0037] 1131. First circumferential side wall; 1132. Second circumferential side wall; 1133. Third circumferential side wall; 1134. Guide groove; 1135. Fourth circumferential side wall; 1136. Fifth circumferential side wall; 1137. Sixth circumferential side wall; 1138. Seventh circumferential side wall; 1321. Spool body; 1322. Sealing connection part; 1323. Opening part; 1321a. First end; 1321b. Second end. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0039] The embodiments of the present application provide a filtering throttling device, and this filtering throttling device is applied to an air conditioner. Exemplarily, please refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of the filtering throttling device provided by the embodiments of the present application, Figure 2 which is a top view of the filtering throttling device provided by the embodiments of the present application, Figure 3 is Figure 2 a cross-sectional view of the filtering throttling device shown along the A-A direction. The filtering throttling device 100 includes a housing 110, a filter element 120 and a spool assembly 130.

[0040] Among them, the housing 110 forms a cavity 113 with an input end 111 and an output end 112; the filter element 120 is arranged in the cavity 113 for filtering the fluid flowing from the input end 111 to the output end 112; the spool assembly 130 forms a throttling cavity 131, and the flow cross-sectional area of the throttling cavity 131 is smaller than the flow cross-sectional area of the input end 111. The spool assembly 130 is movably arranged in the cavity 113 to isolate the input end 111 and the output end 112, or to connect the input end 111 to the output end 112 through the throttling cavity 131.

[0041] It can be understood that the input end 111 is used for inputting fluid, and the output end 112 is used for outputting the filtered and throttled fluid. Among them, the filter element 120 can be arranged between the input end 111 and the valve core assembly 130 to filter the fluid flowing from the input end 111 to the throttling chamber 131, or can be arranged between the valve core assembly 130 and the output end 112 to filter the fluid flowing from the throttling chamber 131 to the output end; the filter element 120 can also have multiple numbers, and filter elements 120 are arranged between the input end 111 and the valve core assembly 130 and between the valve core assembly 130 and the output end 112 to achieve multiple filtering of the fluid.

[0042] In the actual application process, the filter throttling device 100 can be connected to the refrigeration cycle system of the air conditioner. The refrigeration cycle system forms a refrigerant circulation loop. Among them, the filter throttling device 100 is used to filter and throttle the flowing refrigerant. In the initial state, the input end 111 and the output end 112 are isolated. As the refrigerant is continuously input, the pressure of the input end 111 continuously increases. When the pressure reaches the preset value, the valve core assembly 130 moves in the cavity 113 until the input end 111 is communicated with the output end 112 through the throttling chamber 131. Then the refrigerant starts to flow into the throttling chamber 131 for throttling. After being throttled, the refrigerant flows through the filter element 120 and is filtered, and then flows out of the filter throttling device 100 through the output end 112.

[0043] The filter throttling device 100 provided by the embodiment of the present application combines the filtering and throttling functions in one filter throttling device 100, which can reduce the workload generated by assembly connection in the air conditioner production process. In addition, since the connection parts are reduced, the fluid leakage risk at the connection parts is also reduced, improving the product quality.

[0044] Further, refer to Figure 4 , Figure 4 is a cross-sectional view of the filter throttling device provided by the embodiment of the present application in another state. The valve core assembly 130 includes a valve core 132 and an elastic member 133.

[0045] Among them, the valve core 132 is movably arranged in the cavity 113. The valve core 132 includes a valve core body 1321 and a sealing connection part 1322. A throttling cavity 131 and an opening 1323 that communicate with each other are formed in the valve core body 1321. The valve core body 1321 and the side wall of the cavity 113 are arranged at intervals; the sealing connection part 1322 is formed on the outer wall of the valve core body 1321. The opening 1323 and the input end 111 are located on opposite sides of the sealing connection part 1322; when the valve core 132 moves to the first position, the sealing connection part 1322 is sealingly connected to the side wall of the cavity 113 to block the opening 1323 and the input end 111; when the valve core 132 moves to the second position, the sealing connection part 1322 and the side wall of the cavity 113 are in clearance fit, so that the opening 1323 and the input end 111 communicate with each other.

[0046] It should be noted that the fluid input from the input end 111 enters the throttling cavity 131 through the opening 1323. The valve core body 1321 and the side wall of the cavity 113 are arranged at intervals, and a fluid passage is formed therebetween. One end of the fluid passage communicates with the input end, and the other end communicates with the opening 1323; when the valve core 132 moves to the Figure 3 first position as shown, the sealing connection part 1322 is sealingly connected to the side wall of the cavity 113, thereby blocking the fluid passage between the input end 111 and the opening 1323, and further blocking the opening 1323 and the input end 111; when the valve core 132 moves to the Figure 4 second position as shown, the sealing connection part 1322 and the side wall of the cavity 113 are in clearance fit, and both ends of the fluid passage communicate, so that the input end 111 and the opening 1323 communicate with each other.

[0047] In some embodiments, the cavity 113 has a first circumferential side wall 1131 and a second circumferential side wall 1132. The first circumferential side wall 1131 and the second circumferential side wall 1132 are arranged in sequence along the moving direction of the valve core 132. The inner diameter of the first circumferential side wall 1131 is smaller than the inner diameter of the second circumferential side wall 1132. The first circumferential side wall 1131 is used for sealing connection with the sealing connection part 1322, and the second circumferential side wall 1132 is used for clearance fit with the sealing connection part 1322.

[0048] It can be understood that the inner diameter of the first circumferential side wall 1131 is smaller than the inner diameter of the second circumferential side wall 1132. When the sealing connection part 1322 moves to face the first circumferential side wall 1131, its outer wall is closely attached to the first circumferential side wall 1131, so as to achieve sealing connection; when the sealing connection part 1322 moves to face the second circumferential side wall 1132, since the inner diameter of the second circumferential side wall 1132 is larger than the inner diameter of the first circumferential side wall 1131, the outer wall of the sealing connection part 1322 is spaced from the second circumferential side wall 1132, so as to achieve clearance fit.

[0049] In some embodiments, the cavity 113 further has a third circumferential side wall 1133. The third circumferential side wall 1133, the first circumferential side wall 1131, and the second circumferential side wall 1132 are arranged in sequence along the moving direction of the valve core 132. The inner diameter of the third circumferential side wall 1133 is greater than that of the first circumferential side wall 1131. The input end 111 is opened on the third circumferential side wall 1133, and the throttling cavity 131 is arranged on the side of the sealing connection part 1322 away from the input end 111.

[0050] Preferably, the valve core body 1321 is cylindrical, and a cylindrical cavity extending along the length direction is formed inside it. One end of the cavity is sealed, and the other end leads to the outside of the valve core body 1321 and communicates with the output end 112. An opening 1323 communicating with the cavity is formed on the side wall of the valve core body 1321, thereby forming the throttling cavity 131. The third circumferential side wall 1133, the first circumferential side wall 1131, and the second circumferential side wall 1132 are all cylindrical and coaxially arranged with the cylindrical valve core body 1321. The annular sealing connection part 1322 is sleeved on the outer wall of the valve core body 1321, and the outer diameter of the sealing connection part 1322 is equal to or slightly larger than the inner diameter of the first circumferential side wall 1131. Preferably, the contact surface between the sealing connection part 1322 and the first circumferential side wall 1131 is smooth. The sealing connection part 1322 and the valve core body 1321 are integrally formed, for example.

[0051] In some embodiments, the cavity 113 further forms a guiding groove 1134. The valve core body 1321 further includes a first end portion 1321a in its moving direction. The first end portion 1321a is inserted into the guiding groove 1134. The guiding groove 1134 includes a fourth circumferential side wall 1135 arranged around the first end portion 1321a, and the fourth circumferential side wall 1135 is in sealing fit with the first end portion 1321a. The valve core body 1321 further includes a second end portion 1321b opposite to the first end portion 1321a. The cavity 113 further has a fifth circumferential side wall 1136 arranged around the second end portion 1321b, and the fifth circumferential side wall 1136 is in sealing fit with the second end portion 1321b.

[0052] In some embodiments, the valve core assembly 130 further includes an elastic member 133. One end of the elastic member 133 is connected to the valve core 132, and the other end is connected to the housing 110. When the valve core 132 moves to the first position, the elastic member 133 is in a normal state. When the valve core 132 moves to the second position, the elastic member 133 undergoes elastic deformation.

[0053] Preferably, the elastic member 133 is arranged in the guiding groove 1134, and both ends are fixedly connected to the groove bottom of the guiding groove 1134 and the first end portion 1321a respectively. Optionally, the elastic member 133 is a spring, and the telescopic direction of the spring is the same as the moving direction of the valve core 132.

[0054] In practical applications, in the initial state, asFigure 3 When the elastic member 133 is in a normal state, the first circumferential side wall 1131 is sealingly connected to the sealing connection portion 1322, and a first cavity with an input end 111 is formed by enclosing between the valve core body 1321, the fourth circumferential side wall 1135, the third circumferential side wall 1133, the first circumferential side wall 1131, and the sealing connection portion 1322; as the fluid input into the first cavity through the input end 111 increases, the pressure in the first cavity gradually increases, and when it is greater than a preset value, the sealing connection portion 1322 moves in the direction close to the second circumferential side wall 1132 under the air pressure; when the sealing connection portion 1322 moves to be opposite to the second circumferential side wall 1132, such as Figure 4 the input end 111 communicates with the opening 1323 through the gap between the valve core 132 and the side wall of the cavity 113, so that the input fluid can flow out through the output end 112 after throttling through the throttling cavity 131.

[0055] Regarding the setting manner of the filter element 120, optionally, the filter element 120 is arranged between the throttling cavity 131 and the output end 112 to filter the throttled fluid. To improve the filtering efficiency of the filter element 120, the filter element 120 can be set as a cup shape with an opening facing the throttling cavity 131. Optionally, the filter element 120 is a filter mesh structure.

[0056] In some embodiments, the cavity 113 further has a sixth circumferential side wall 1137 and a seventh circumferential side wall 1138. The filter element 120 is arranged in the cavity formed by enclosing the sixth circumferential side wall 1137. Optionally, the filter element 120 is welded to the sixth circumferential side wall 1137, or is clamped by opening a clamping groove on the sixth circumferential side wall 1137. The seventh circumferential side wall 1138 forms the output end 112. Preferably, the fourth circumferential side wall 1135, the third circumferential side wall 1133, the first circumferential side wall 1131, the second circumferential side wall 1132, the fifth circumferential side wall 1136, the sixth circumferential side wall 1137, and the seventh circumferential side wall 1138 are sequentially connected and coaxially arranged along the moving direction of the valve core 132. In this way, the noise generated when the fluid flows in the filtering and throttling device 100 can be reduced.

[0057] The filtering and throttling device 100 provided by the embodiment of the present application combines the filtering and throttling functions in one filtering and throttling device 100, which can reduce the workload generated by assembly connection in the air conditioner production process. In addition, since the connection parts are reduced, the risk of fluid leakage at the connection parts is also reduced, and the product quality is improved.

[0058] The embodiment of the present application also provides an air conditioner. Exemplarily, please refer to Figure 5 , Figure 5Schematic structural diagram of the air conditioner provided by the embodiment of the present application. The air conditioner 10 includes a refrigeration system 200, and the refrigeration system 200 includes the filtering throttling device 100 in the above embodiment.

[0059] Exemplarily, participate Figure 6 , Figure 6 Schematic structural diagram of the refrigeration system provided by the embodiment of the present application. The refrigeration system 200 includes a compressor 210, a flow path switching valve 220, a first heat exchanger group 230, a filtering throttling device 100, and a second heat exchanger group 240 that are sequentially connected in series through a refrigerant pipeline. The output end of the second heat exchanger group 240 is connected to the suction end of the compressor 210.

[0060] For the air conditioner 10 provided by the embodiment of the present application, by integrating the filtering and throttling functions into a single filtering throttling device 100, the workload caused by assembly connections during the production of the air conditioner can be reduced. Additionally, since the number of connection points is reduced, the risk of fluid leakage at the connection points is also lowered, improving the product quality.

[0061] The above has introduced in detail the filtering throttling device and the air conditioner provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, based on the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A filtering throttle device, applied to an air conditioner, characterized in that Comprising: A housing, forming a cavity with an input end and an output end; A filter element, disposed in the cavity, for filtering the fluid flowing from the input end to the output end; A valve core assembly, forming a throttling cavity, the flow cross-sectional area of the throttling cavity being smaller than that of the input end, the valve core assembly being movably disposed in the cavity to isolate the input end and the output end, or to connect the input end to the output end through the throttling cavity.

2. The filtering throttle device according to claim 1, characterized in that The valve core assembly includes a valve core movably disposed in the cavity, and the valve core includes: A valve core body, forming the throttling cavity and an opening that communicate with each other, and there is a gap between the valve core body and the side wall of the cavity; A sealing connection portion, formed on the outer wall of the valve core body, the opening and the input end being located on opposite sides of the sealing connection portion; When the valve core moves to the first position, the sealing connection portion is sealingly connected to the side wall of the cavity to block the opening and the input end; when the valve core moves to the second position, the sealing connection portion and the side wall of the cavity are in clearance fit to communicate the opening and the input end.

3. The filtering throttling device according to claim 2, characterized in that, The cavity has a first circumferential side wall and a second circumferential side wall, the first circumferential side wall and the second circumferential side wall being arranged in sequence along the moving direction of the valve core, the inner diameter of the first circumferential side wall being smaller than that of the second circumferential side wall, the first circumferential side wall being used for sealing connection with the sealing connection portion, and the second circumferential side wall being used for clearance fit with the sealing connection portion.

4. The filtering throttle device according to claim 3, wherein, The cavity further has a third circumferential side wall, the third circumferential side wall, the first circumferential side wall, and the second circumferential side wall being arranged in sequence along the moving direction of the valve core, the inner diameter of the third circumferential side wall being larger than that of the first circumferential side wall, the input end being opened on the third circumferential side wall, and the throttling cavity being disposed on the side of the sealing connection portion away from the input end.

5. The filtering throttling device according to claim 2, characterized in that, The cavity further forms a guide groove, and the valve core body further includes a first end portion in its moving direction, the first end portion being inserted into the guide groove, the guide groove including a fourth circumferential side wall surrounding the first end portion, and the fourth circumferential side wall being sealingly fitted with the first end portion.

6. The filtering throttling device according to claim 5, wherein, The valve core body further includes a second end portion opposite to the first end portion, and the housing further includes a fifth circumferential side wall surrounding the second end portion, and the fifth circumferential side wall being sealingly fitted with the second end portion.

7. The filtering throttle device according to any one of claims 2-5, characterized in that, The valve core assembly further includes an elastic member, one end of the elastic member being connected to the valve core and the other end being connected to the housing; When the valve core moves to the first position, the elastic member is in a normal state, and when the valve core moves to the second position, the elastic member undergoes elastic deformation.

8. The filtering throttle device according to any one of claims 1-6, characterized in that The filter element is disposed between the throttling cavity and the output end.

9. The filtering throttle device according to claim 8, characterized in that The filter element is in a cup shape with an opening facing the throttling cavity.

10. An air conditioner, characterized in that, Including a refrigeration system, the refrigeration system including the filter throttling device according to any one of claims 1-9.

Images