Air conditioner refrigerant self-filling device

Abstract

The utility model discloses an air conditioner refrigerant self-filling device which is used for connecting an air conditioner refrigerant loop and a refrigerant storage device, the refrigerant self-filling device comprises a shell, an electronic expansion valve, a first connecting pipe and a second connecting pipe, the electronic expansion valve is connected with a signal line, the signal line penetrates out of the shell, and the first connecting pipe is connected with the second connecting pipe. The end, located outside the shell, of the signal line is used for being connected with a controller of the air conditioner. The first connecting pipe and the second connecting pipe are connected with an inlet pipe and an outlet pipe of the electronic expansion valve respectively and penetrate out of the shell, the first connecting pipe penetrating out of the shell is used for being connected with a refrigerant storage device, and the second connecting pipe penetrating out of the shell is used for being connected with an air conditioner refrigerant loop. The refrigerant self-filling device is provided with the electronic expansion valve, and the electronic expansion valve is connected with the controller of the air conditioner, so that the refrigerant filling flow can be adjusted by adjusting the opening degree of the electronic expansion valve, and the refrigerant filling amount can be accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning refrigerant filling, in particular to an air-conditioning refrigerant self-filling device. Background Art

[0002] The air conditioner needs to be charged with refrigerant when it is installed. After a certain period of use, due to the loss of refrigerant, it also needs to be charged with refrigerant.

[0003] The existing refrigerant charging method generally directly connects the refrigerant storage device to the refrigerant pipeline, and uses the pressure difference between the air pressure in the refrigerant storage device and the air conditioner refrigerant pipeline to charge the refrigerant. However, this method has poor control accuracy for the refrigerant charging amount, and there is a problem that the refrigerant charging amount requirements of the air conditioner cannot be met or exceeded.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The utility model provides an air-conditioning refrigerant self-charging device, which solves the technical problem that the refrigerant charging amount of the existing air-conditioning refrigerant self-charging device cannot reach or exceeds the refrigerant charging amount requirement.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0007] An air-conditioning refrigerant self-charging device, used to connect an air-conditioning refrigerant circuit and a refrigerant storage device, the refrigerant self-charging device comprising:

[0008] case;

[0009] An electronic expansion valve, connected to which is a signal line, the signal line passes through the housing, and one end of the signal line located outside the housing is used to be connected to a controller of the air conditioner;

[0010] The first connecting pipe and the second connecting pipe are respectively connected to the inlet pipe and the outlet pipe of the electronic expansion valve and pass through the shell. The first connecting pipe passing through the shell is used to connect to the refrigerant storage device, and the second connecting pipe passing through the shell is used to connect to the air-conditioning refrigerant circuit.

[0011] In some embodiments of the present application, the electronic expansion valve is installed in the housing via a first installation assembly, the first installation assembly includes a first fixing member and a first buffer member, and the first buffer member is located between the first fixing member and the electronic expansion valve.

[0012] In some embodiments of the present application, the electronic expansion valve includes a tube body, a first mounting structure is provided in the shell, and the first mounting assembly is used to fix the tube body of the electronic expansion valve on the first mounting structure.

[0013] In some embodiments of the present application, a wire clamp fixing device for fixing the electronic expansion valve signal line is provided in the shell, and the wire clamp fixing device is located on the first mounting structure; the shell has a through hole for the signal line to pass through, and a flexible part is provided in the through hole.

[0014] In some embodiments of the present application, a filter is provided on the first connecting tube and / or the second connecting tube located in the shell, and the filter is installed in the shell through a second mounting assembly, and the second mounting assembly includes a second fixing member and a second buffer member, and the second buffer member is located between the second fixing member and the filter.

[0015] In some embodiments of the present application, a gas-side shut-off device is provided on the refrigerant pipeline, and the second connecting pipe passing through the shell is used to connect to the gas-side shut-off device.

[0016] In some embodiments of the present application, the second connecting tube passing through the shell has a free end, the free end of the second connecting tube is provided with a second pipe connecting device, the refrigerant self-filling device includes a second hose, and the second pipe connecting device is connected to the gas side shut-off device through the second hose.

[0017] In some embodiments of the present application, the first connecting tube passing through the shell has a free end, the free end of the first connecting tube is provided with a first pipe connecting device, the refrigerant self-filling device includes a first hose, and the first pipe connecting device is connected to the refrigerant storage device through the first hose.

[0018] In some embodiments of the present application, the shell includes a first shell and a second shell, the first shell and the second shell each include a front panel and a side panel, the side panels of the first shell and the second shell are connected to form a side panel of the shell, and the fixing structure of the first shell and the second shell, the signal line, and the first connecting tube and the second connecting tube are all located on the side panel.

[0019] In some embodiments of the present application, the side panel of the shell includes a top side panel, and a handle is provided on the top side panel.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are: an air-conditioning refrigerant self-charging device, used to connect the air-conditioning refrigerant circuit and the refrigerant storage device, the refrigerant self-charging device includes a shell, an electronic expansion valve, a first connecting pipe and a second connecting pipe, the electronic expansion valve is connected to a signal line, the signal line passes through the shell, and one end of the signal line located outside the shell is used to connect with the controller of the air conditioner; the first connecting pipe and the second connecting pipe are respectively connected to the inlet pipe and the outlet pipe of the electronic expansion valve and pass through the shell, the first connecting pipe passing through the shell is used to connect with the refrigerant storage device, and the second connecting pipe passing through the shell is used to connect with the air-conditioning refrigerant circuit. The utility model refrigerant self-charging device is provided with an electronic expansion valve, and the electronic expansion valve is connected to the controller of the air conditioner, so that the refrigerant filling flow rate can be adjusted by adjusting the opening of the electronic expansion valve to accurately control the refrigerant filling amount.

[0021] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the connection between the air conditioner refrigerant self-charging device, the refrigerant storage device, and the air conditioner according to an embodiment;

[0024] Figure 2 A schematic diagram of an air-conditioning refrigerant self-charging device according to an embodiment;

[0025] Figure 3 for Figure 2 Left side view;

[0026] Figure 4 for Figure 2 Bottom view of

[0027] Figure 5 This is the internal schematic diagram of the air conditioner refrigerant self-charging device;

[0028] Figure 6 is an enlarged view of the assembly position of the electronic expansion valve and the first mounting assembly;

[0029] Figure 7 is an enlarged view of the assembly position of the filter and the second mounting assembly;

[0030] Figure 8 is a schematic diagram of the first housing being exploded from other components;

[0031] Fig. 9 is a schematic diagram of a first shell;

[0032] Fig.10 is a schematic diagram of a second shell;

[0033] In the figure,

[0034] 101. Refrigerant self-charging device;

[0035] 102, air conditioning device; 1021, indoor unit; 1022, outdoor unit; 1023, gas side shutoff device; 1024, liquid side shutoff device;

[0036] 103. Refrigerant storage device;

[0037] 1. Shell; 11. First mounting structure; 12. Flexible member; 13. Second mounting structure; 14. First shell; 15. Second shell; 1451. Front panel; 1452. Side; 1453. Top side panel;

[0038] 2. Electronic expansion valve; 21. Signal line; 22. Coil; 23. Valve body; 24. Inlet pipe; 25. Outlet pipe;

[0039] 3. First connecting pipe; 31. First pipe connecting device;

[0040] 4. second connecting pipe; 41. second pipe connecting device;

[0041] 51. a first fixing member; 52. a first buffer member;

[0042] 6. Wire clamping device;

[0043] 7. Filter;

[0044] 81. a second fixing member; 82. a second buffer member;

[0045] 91. a first hose; 92. a second hose;

[0046] 10. Handle. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0053] The air conditioning device provided in the present application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, a throttling device and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0054] The low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0055] The throttling device expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0056] The outdoor unit of the air conditioner refers to a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and a throttling device may be provided in the indoor unit or the outdoor unit.

[0057] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating state, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling state.

[0058] In the refrigerant circulation loop formed by connecting the compressor, condenser, throttling device and evaporator through pipes, refrigerant needs to be filled to achieve cooling and heating of the air-conditioning device.

[0059] like Figure 1-10 As shown, an air-conditioning refrigerant self-charging device 101 is used to charge refrigerant into a refrigerant circulation system of an air-conditioning device 102 .

[0060] like Figure 1 The refrigerant shown is stored in the refrigerant storage device 103 before charging. The air conditioning refrigerant self-charging device 101 is used to connect the refrigerant circuit of the air conditioning device 102 and the refrigerant storage device 103 to charge the refrigerant stored in the refrigerant storage device 103 into the refrigerant circuit of the air conditioning device 102.

[0061] The refrigerant circuit of the air-conditioning device 102 has high requirements on the filling accuracy of the air-conditioning refrigerant, especially for refrigerants with safety performance such as flammable refrigerants.

[0062] Therefore, how to control the accuracy of the refrigerant filling amount through the refrigerant self-filling device 101 is a technical problem that must be solved.

[0063] The refrigerant self-charging device 101 is described in detail below in conjunction with the accompanying drawings:

[0064] like Figure 2-7 As shown, the refrigerant self-charging device 101 includes a shell 1, an electronic expansion valve 2, a first connecting pipe 3 and a second connecting pipe 4.

[0065] Among them, the electronic expansion valve 2 is located inside the shell 1, the first connecting pipe 3 and the second connecting pipe 4 are partially located inside the shell 1 and partially located outside the shell 1, and the part of the first connecting pipe 3 and the second connecting pipe 4 located outside the shell 1 is used to connect with the refrigerant circuit of the air-conditioning device 102 and the refrigerant storage device 103.

[0066] The shell 1 is used to form the outer shell of the refrigerant self-charging device 101 and to protect the internal components of the shell 1 .

[0067] The electronic expansion valve 2 is located in the housing 1 and is used to control the refrigerant flow rate during the refrigerant filling process. The electronic expansion valve 2 controls the refrigerant flow rate by controlling its opening. In particular, when the refrigerant filling amount is about to reach the refrigerant set filling amount, reducing the opening of the electronic expansion valve 2 can help control the actual refrigerant filling amount to accurately reach the refrigerant set filling amount.

[0068] The electronic expansion valve 2 includes a coil 22 , a valve body 23 , an inlet pipe 24 and an outlet pipe 25 .

[0069] The coil 22 is used to control the opening of the valve core in the valve body 23 .

[0070] The inlet pipe 24 and the outlet pipe 25 are both connected to the valve body 23 to allow the refrigerant to enter and exit the valve body 23 .

[0071] The electronic expansion valve 2 is connected to a signal line 21 , which is connected to a coil 22 of the electronic expansion valve 2 . The signal line 21 is used to receive an electrical signal and transmit the electrical signal to the coil 22 . The size of the electrical signal obtained by the coil 22 controls the opening of the electronic expansion valve 2 .

[0072] The signal line 21 passes through the housing 1 to be connected to an external electrical signal generating device.

[0073] In order to simplify the product, one end of the signal line 21 outside the housing 1 is used to connect to the controller of the air conditioning device 102. The controller of the air conditioning device 102 sends a control signal of the electronic expansion valve 2 to control the electronic expansion valve 2. There is no need to set up a separate control device for the electronic expansion valve 2, which can simplify the structure of the refrigerant self-charging device and save costs.

[0074] The first connecting pipe 3 and the second connecting pipe 4 are respectively connected to the inlet pipe 24 and the outlet pipe 25 of the electronic expansion valve 2 and pass through the shell 1. The first connecting pipe 3 passing through the shell 1 is used to connect to the refrigerant storage device 103, and the second connecting pipe 4 passing through the shell 1 is used to connect to the refrigerant circuit of the air-conditioning device 102.

[0075] The first connecting pipe 3 is connected to the inlet pipe 24 of the electronic expansion valve 2 , and the first connecting pipe 3 passes through the shell 1 . The first connecting pipe 3 passing through the shell 1 is used to connect to the refrigerant storage device 103 , and the first connecting pipe 3 is used to conduct the refrigerant of the refrigerant storage device 103 to the electronic expansion valve 2 .

[0076] The second connecting pipe 4 is connected to the outlet pipe 25 of the electronic expansion valve 2. The second connecting pipe 4 passes through the shell 1. The second connecting pipe 4 passing through the shell 1 is used to connect to the refrigerant circuit of the air-conditioning device 102. The second connecting pipe 4 is used to conduct the refrigerant of the electronic expansion valve 2 to the refrigerant circuit of the air-conditioning device 102.

[0077] The electronic expansion valve 2 is installed in the housing 1 through a first installation assembly.

[0078] The first mounting assembly includes a first fixing member 51 and a first buffer member 52. The first fixing member 51 is used to fix the electronic expansion valve 2. The first buffer member 52 is located between the first fixing member 51 and the electronic expansion valve 2. The first buffer member 52 is used to form a flexible connection between the first fixing member 51 and the electronic expansion valve 2 to prevent wear on the pipeline.

[0079] In some embodiments, the first fixing member 51 is a bridge-shaped metal clip.

[0080] In some embodiments, the first buffer member 52 is a rubber member, and the rubber member may be located between the first fixing member 51 and the electronic expansion valve 2 .

[0081] In one embodiment, the first installation assembly is assembled with the tube body of the electronic expansion valve 2 , for example, the first installation assembly is assembled with the inlet pipe 24 and / or the outlet pipe 25 of the electronic expansion valve 2 .

[0082] In some embodiments, the first buffer member 52 is mounted on the inlet pipe 24 and / or the outlet pipe 25 of the electronic expansion valve 2 .

[0083] In order to facilitate the assembly of the first mounting component with the inlet pipe 24 and / or outlet pipe 25 of the electronic expansion valve 2, a first mounting structure 11 is provided in the shell 1. The first mounting component is used to fix the tube body of the electronic expansion valve 2 on the first mounting structure 11. The first buffer member 52 is located between the first fixing member 51 and the tube body of the electronic expansion valve 2.

[0084] The first mounting structure 11 is a mounting platform protruding from the inner wall of the housing 1 .

[0085] The first mounting structure 11 facilitates the assembly of the first fixing member 51 and the housing 1 . The fixing structure is not shown on the appearance of the housing 1 , thereby ensuring that the appearance of the housing 1 is smooth and beautiful.

[0086] Both ends of the bridge-shaped metal clip of the first fixing member 51 are fixed to the mounting platform by screws, and the arc-shaped portion of the bridge-shaped metal clip is assembled with the tube body of the electronic expansion valve 2 through the first buffer member 52 .

[0087] In order to protect the signal line 21 and to facilitate the routing of the signal line 21 , a wire clamping and fixing device 6 for fixing the electronic expansion valve signal line 21 is provided in the housing 1 .

[0088] In some embodiments, the wire clamping device 6 is located on the first mounting structure 11 .

[0089] In some embodiments, the wire clamping and fixing device 6 is a wire clamp, and the wire clamp is fixedly mounted on the first mounting structure 11 .

[0090] The signal line 21 is fixed by the line clamping and fixing device 6 , which can protect the signal line 21 . When an external force acts on the signal line 21 , the line clamping and fixing device 6 has a buffering effect on the signal line to prevent the signal line 21 from being torn off.

[0091] The housing 1 has a through hole for the signal line 21 to pass through, and a flexible member 12 is arranged in the through hole to protect the signal line 21 .

[0092] In order to ensure the quality of the charged refrigerant, a filter 7 is provided on the first connecting pipe 3 and / or the second connecting pipe 4 located in the housing 1 .

[0093] The filter 7 is used to filter the refrigerant charged from the refrigerant storage device 103 to the air conditioning device 102 to prevent impurities from entering the refrigerant circulation circuit of the air conditioning device 102 .

[0094] In some embodiments, the filter 7 is installed in the housing 1 through a second installation assembly.

[0095] The second mounting assembly includes a second fixing member 81 and a second buffer member 82 . The second fixing member 81 is used to fix the filter 7 . The second buffer member 82 is located between the second fixing member 81 and the filter 7 .

[0096] In some embodiments, the second buffer member 82 is a rubber block, and the rubber block is sleeved on the filter 7 .

[0097] In the embodiment where the first connecting pipe 3 and the second connecting pipe 4 are both provided with filters 7, the rubber block is one or two. When one rubber block is provided, the rubber block is provided with two through holes for placing two filters 7 respectively.

[0098] The second fixing member 81 is a bridge-shaped metal clip.

[0099] In order to facilitate the assembly of the second fixing member 81 and the shell 1, and to ensure that the fixing structure is not displayed on the appearance of the shell 1 and the flatness and aesthetics of the appearance of the shell 1, a second mounting structure 13 is set in the shell 1. The second mounting structure 13 is a mounting platform protruding from the inner wall of the shell 1. The two ends of the bridge-shaped metal clip of the second fixing member 81 are fixed to the mounting platform by screws, and the arc-shaped portion of the bridge-shaped metal clip is assembled with the filter 7 through the second buffer member 82.

[0100] The air conditioning device 102 includes an indoor unit 1021 and an outdoor unit 1022. The indoor unit 1021 and the outdoor unit 1022 are connected via a refrigerant pipeline, and a gas side shutoff device 1023 and a liquid side shutoff device 1024 are provided on the refrigerant pipeline.

[0101] The second connecting pipe 4 passing through the housing 1 is used to connect to the gas-side shut-off device 1023 .

[0102] In some embodiments, the refrigerant self-charging device 101 includes a second hose 92 .

[0103] The second connecting pipe 4 passing through the housing 1 has a free end. A second pipe connecting device 41 is provided at the free end of the second connecting pipe 4 . The second pipe connecting device 41 is connected to the gas-side shut-off device 1023 via a second hose 92 .

[0104] The second pipe connection device 41 facilitates the connection and removal of the second hose 92 and the second connecting pipe 4 .

[0105] In some embodiments, the refrigerant self-charging device 101 includes a first hose 91 .

[0106] The first connecting pipe 3 passing through the shell 1 has a free end. A first pipe connecting device 31 is provided at the free end of the first connecting pipe 3 . The first pipe connecting device 31 is connected to the refrigerant storage device 103 through a first hose 91 .

[0107] The first pipe connection device 31 facilitates the connection and removal of the first hose 91 and the first connecting pipe 3 .

[0108] The first pipe connection device 31 and the second pipe connection device 41 both include pipe connection nuts.

[0109] In some embodiments, the first pipe connection device 31 and the second pipe connection device 41 both include pipe caps to protect the pipes.

[0110] In order to ensure the integrity and aesthetics of the front panel of the shell 1, the front panel of the shell 1 is not provided with any components and is a complete panel.

[0111] exist Figure 8-10 In the example, the housing 1 includes a first housing 14 and a second housing 15 , and the first housing 14 and the second housing 15 are connected to form the housing 1 .

[0112] The first shell 14 and the second shell 15 each include a front panel 1451 and a side portion 1452 connected to the front panel 1451 .

[0113] The side portions 1452 of the first shell 14 and the second shell 15 are connected to form four side panels of the shell 1 .

[0114] After the first shell 14 and the second shell 15 are assembled, the front panels 1451 of the two shells face each other, and the four side panels connect the front panels 1451 of the first shell 14 and the second shell 15 .

[0115] The fixing structures of the first shell 14 and the second shell 15 are both located on the side panels, and the signal line 21 and the first connecting pipe 3 and the second connecting pipe 4 are all passed through the side panels.

[0116] In some embodiments, the side portion 1452 of the first shell 14 is disposed perpendicularly to the front panel 1451 of the first shell 14 , and the size of the side portion 1452 of the first shell 14 is smaller than the size of the side panel.

[0117] In some embodiments, the side portion 1452 of the second shell 15 is disposed perpendicularly to the front panel 1451 of the second shell 15 , and the size of the side portion 1452 of the second shell 15 is smaller than the size of the side panel.

[0118] The side panels of the housing 1 include a top side panel 1453 , on which a handle 10 is provided for carrying the refrigerant self-charging device.

[0119] When the air conditioner is charged with refrigerant, the first pipe connection device 31 of the refrigerant self-charging device 101 is connected to the refrigerant storage device 103 through the first hose 91, the second pipe connection device 41 is connected to the gas side cut-off device 1023 of the air conditioner 102 through the second hose 92, and the signal line 21 is connected to the controller of the air conditioner 102, generally connected to the controller of the outdoor unit. The opening of the electronic expansion valve 2 is controlled by the controller during the refrigerant charging process.

[0120] The air conditioner refrigerant self-charging device can improve the accuracy of the refrigerant filling amount. The overall structure is simple, the front panel adopts a screw-free design to ensure the aesthetics of the product, and a handle design is added on the top to facilitate after-sales service personnel to move and carry. The electronic expansion valve and filter inside the shell are fixed with a new flexible structure design to avoid metal wear during multiple disassembly and assembly.

[0121] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0122] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioning refrigerant self-charging device, used to connect an air conditioning refrigerant circuit and a refrigerant storage device, characterized in that: The refrigerant self-charging device comprises: case; An electronic expansion valve, connected to which is a signal line, the signal line passes through the housing, and one end of the signal line located outside the housing is used to be connected to a controller of the air conditioner; The first connecting pipe and the second connecting pipe are respectively connected to the inlet pipe and the outlet pipe of the electronic expansion valve and pass through the shell. The first connecting pipe passing through the shell is used to connect to the refrigerant storage device, and the second connecting pipe passing through the shell is used to connect to the air-conditioning refrigerant circuit.

2. The air conditioning refrigerant self-charging device according to claim 1, characterized in that: The electronic expansion valve is installed in the housing through a first installation assembly. The first installation assembly includes a first fixing member and a first buffer member. The first buffer member is located between the first fixing member and the electronic expansion valve.

3. The air conditioning refrigerant self-charging device according to claim 2, characterized in that: The electronic expansion valve comprises a tube body, a first mounting structure is arranged in the shell, and the first mounting assembly is used to fix the tube body of the electronic expansion valve on the first mounting structure.

4. The air conditioning refrigerant self-charging device according to claim 3, characterized in that: A wire clamping device for fixing the electronic expansion valve signal line is arranged in the shell, and the wire clamping device is located on the first mounting structure; a through hole for the signal line to pass through is provided on the shell, and a flexible member is arranged in the through hole.

5. The air conditioning refrigerant self-charging device according to claim 1, characterized in that: A filter is provided on the first connecting pipe and / or the second connecting pipe in the shell. The filter is installed in the shell through a second mounting assembly. The second mounting assembly includes a second fixing member and a second buffer member. The second buffer member is located between the second fixing member and the filter.

6. The air conditioning refrigerant self-charging device according to claim 1, characterized in that: The refrigerant pipeline is provided with a gas-side shutoff device, and the second connecting pipe passing through the shell is used to connect the gas-side shutoff device.

7. The air conditioning refrigerant self-charging device according to claim 6, characterized in that: The second connecting pipe passing through the shell has a free end, and the free end of the second connecting pipe is provided with a second pipe connecting device. The refrigerant self-filling device includes a second hose, and the second pipe connecting device is connected to the gas side shut-off device through the second hose.

8. The air conditioning refrigerant self-charging device according to claim 1, characterized in that: The first connecting tube passing through the shell has a free end, the free end of the first connecting tube is provided with a first pipe connecting device, the refrigerant self-filling device includes a first hose, and the first pipe connecting device is connected to the refrigerant storage device through the first hose.

9. The air conditioning refrigerant self-charging device according to claim 1, characterized in that: The shell includes a first shell and a second shell, each of which includes a front panel and a side portion, the side portions of the first shell and the second shell are connected to form a side panel of the shell, and the fixing structure of the first shell and the second shell, the signal line, and the first connecting tube and the second connecting tube are all located on the side panel.

10. The air conditioning refrigerant self-charging device according to claim 1, characterized in that: The side panels of the housing include a top side panel, and a handle is disposed on the top side panel.

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