Cleaning device

Abstract

The invention discloses a cleaning device. The cleaning device is used for cleaning the air conditioning unit, the air conditioning unit comprises an indoor unit and an outdoor unit connected with the indoor unit, and the cleaning device is arranged outside the air conditioning unit and comprises a gas-liquid separator, a first pipeline assembly and a second pipeline assembly. One end of the first pipeline assembly is detachably connected with a refrigerant pipe of the outdoor unit, and the other end of the first pipeline assembly is connected with a gas inlet of the gas-liquid separator; one end of the second pipeline assembly is detachably connected with a refrigerant pipe of the indoor unit, and the other end of the second pipeline assembly is connected with a gas outlet of the gas-liquid separator. The cleaning device is arranged outside the air conditioning unit, so that the weight of the air conditioning unit can be reduced, and the fault occurrence rate in the operation process of the air conditioning unit is reduced. Moreover, the cleaning device is arranged outside the air conditioning unit, so that the structure of the cleaning device is not limited by the structure of the air conditioning unit, and the cleaning device can effectively clean the residual refrigerant and refrigerant oil in the indoor unit.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and in particular to a cleaning device. Background Art

[0002] With the rapid development of the air-conditioning industry, people have higher and higher requirements for the efficiency and reliability of air-conditioning. Some old air-conditioning units on the market often have poor cooling or heating effects due to their long service life, and the reliability of their internal components and the whole machine is difficult to guarantee. In these cases, it is usually necessary to replace the outdoor unit of the air-conditioning unit to improve the overall performance.

[0003] When replacing the outdoor unit, you often encounter the problem that the refrigerant types used by different models of air conditioning units are inconsistent. In this case, in order to ensure that the newly replaced outdoor unit is compatible with the indoor unit and works properly, the refrigerant and refrigeration oil remaining in the indoor unit need to be thoroughly cleaned.

[0004] In the related art, a cleaning device, such as a cleaning tank, is installed inside the air conditioning unit. During the trial operation of the air conditioning unit, the cleaning tank can automatically clean the refrigerant and refrigeration oil remaining in the indoor unit.

[0005] However, since the cleaning device is arranged inside the air conditioning unit, this will increase the weight of the air conditioning unit and also increase the failure rate during the operation of the air conditioning. Summary of the invention

[0006] The present invention provides a cleaning device to solve at least one of the above-mentioned technical problems.

[0007] The cleaning device of the embodiment of the present invention is used for cleaning an air conditioning unit, the air conditioning unit comprises an indoor unit and an outdoor unit connected to the indoor unit, the cleaning device is arranged outside the air conditioning unit, and the cleaning device comprises a gas-liquid separator, a first pipe assembly and a first pipe assembly. One end of the first pipe assembly is detachably connected to the refrigerant pipe of the outdoor unit, and the other end of the first pipe assembly is connected to the air inlet of the gas-liquid separator; one end of the second pipe assembly is detachably connected to the refrigerant pipe of the indoor unit, and the other end of the second pipe assembly is connected to the air outlet of the gas-liquid separator.

[0008] In the cleaning device of the embodiment of the present invention, the cleaning device is arranged outside the air conditioning unit, which can reduce the weight of the air conditioning unit and reduce the failure rate during the operation of the air conditioning unit. In addition, since the cleaning device is arranged outside the air conditioning unit, the structure of the cleaning device is not limited by the structure of the air conditioning unit itself, and the cleaning device can effectively clean the refrigerant and refrigeration oil remaining in the indoor unit. During the trial operation of the air conditioning unit, the refrigerant can enter the gas-liquid separator through the first pipeline assembly and can be separated in the gas-liquid separator, and oil stains and impurities remain in the gas-liquid separator. Thereafter, the refrigerant flows into the indoor unit from the second pipeline assembly and continues to circulate in the air conditioning unit. As the number of refrigerant cycles increases, more oil stains and impurities remain in the gas-liquid separator, thereby achieving effective cleaning of the refrigerant and refrigeration oil remaining in the indoor unit.

[0009] In addition, since the cleaning device is arranged outside the air-conditioning unit, and the first pipe assembly is detachably connected to the refrigerant pipe of the outdoor unit, and the second pipe assembly is detachably connected to the refrigerant pipe of the indoor unit, after cleaning the residual refrigerant and refrigeration oil, the cleaning device can be cleaned and reused, thereby reducing replacement costs.

[0010] In some embodiments, the gas-liquid separator includes a first separator and a second separator, the first pipeline assembly includes a first air inlet pipe, a second air inlet pipe, a third air inlet pipe and a first three-way valve, the first air inlet pipe, the second air inlet pipe and the third air inlet pipe are all connected to the first three-way valve, the first air inlet pipe is connected to the refrigerant pipe of the outdoor unit, the second air inlet pipe is connected to the first separator, and the third air inlet pipe is connected to the second separator;

[0011] The second pipe assembly includes a first air outlet pipe, a second air outlet pipe, a third air outlet pipe and a second three-way valve. The first air outlet pipe, the second air outlet pipe and the third air outlet pipe are all connected to the second three-way valve. The first air outlet pipe is connected to the refrigerant pipe of the indoor unit. The second air outlet pipe is connected to the first separator, and the third air outlet pipe is connected to the second separator.

[0012] In some embodiments, the first pipe assembly further includes a filter and a first connecting pipe, one end of the filter is connected to the first air inlet pipe, the other end of the filter is connected to the first connecting pipe, and a first valve is provided at one end of the first connecting pipe away from the filter.

[0013] In some embodiments, the first pipe assembly also includes a second connecting pipe and a first nozzle, one end of the second connecting pipe is connected to the first valve, the other end of the second connecting pipe is detachably connected to the first nozzle, and the first nozzle is detachably connected to the refrigerant pipe of the outdoor unit.

[0014] In some embodiments, a second valve is disposed at one end of the first gas outlet pipe away from the second three-way valve.

[0015] In some embodiments, the second pipe assembly also includes a third connecting pipe and a second nozzle, one end of the third connecting pipe is connected to the second valve, the other end of the third connecting pipe is detachably connected to the second nozzle, and the second nozzle is detachably connected to the refrigerant pipe of the indoor unit.

[0016] In some embodiments, the cleaning device also includes an oil drain pipe assembly, which includes an oil drain pipeline and a third valve. The gas-liquid separator is provided with an oil drain port, one end of the oil drain pipe is connected to the oil drain port, and the other end of the oil drain pipe is connected to the third valve.

[0017] In some embodiments, the gas-liquid separator includes a first separator and a second separator, the oil drain pipeline includes a first oil drain pipe, a second oil drain pipe, a third oil drain pipe and a third three-way valve, the first oil drain pipe, the second oil drain pipe and the third oil drain pipe are all connected to the third three-way valve, the first oil drain pipe is connected to the first separator, the second oil drain pipe is connected to the second separator, and the third oil drain pipe is connected to the third valve.

[0018] In certain embodiments, the cleaning device further comprises a support member, the gas-liquid separator is mounted on the support member, and a plurality of universal wheels are provided on a side of the support member facing away from the gas-liquid separator.

[0019] In some embodiments, the cleaning device further includes a box assembly, which is detachably connected to the support member, and a mounting groove is provided on the box assembly. The box assembly includes a buckle, and the buckle is snapped into the mounting groove.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of the connection relationship between the cleaning device and the air conditioning unit according to an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a first pipeline assembly according to an embodiment of the present invention;

[0024] Figure 3is a schematic structural diagram of a second pipeline assembly according to an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the connection relationship between the oil drain pipe assembly and the gas-liquid separator according to the embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of a support member and a universal wheel according to an embodiment of the present invention;

[0027] Figure 6 is a disassembled schematic diagram of a cleaning device according to an embodiment of the present invention;

[0028] Figure 7 It is a partial structural schematic diagram of a cleaning device according to an embodiment of the present invention;

[0029] Figure 8 It is a schematic structural diagram of a third cover plate assembly according to an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] Cleaning device 100; air conditioning unit 200; indoor unit 210; outdoor unit 220; refrigerant connecting pipe 300; gas-liquid separator 10; air inlet 11 of gas-liquid separator; first pipe assembly 20; refrigerant pipe 221 of outdoor unit; second pipe assembly 30; refrigerant pipe 211 of indoor unit; air outlet 12 of gas-liquid separator; first separator 13; second separator 14; first air inlet pipe 21; second air inlet pipe 22; third air inlet pipe 23; first three-way valve 24; first air outlet pipe 31; second air outlet pipe 32; third air outlet pipe 33; second three-way valve 34; filter 25; first connecting pipe 26; first valve 27; second connecting pipe 28; first nut 29; second valve 35; third connecting pipe 36; second nut 37; oil drain pipe assembly 4 0; oil drain pipe 41; third valve 42; oil drain port 15; first oil drain pipe 410; second oil drain pipe 411; third oil drain pipe 412; third three-way valve 413; support 50; universal wheel 60; crimping nut 70; box assembly 80; mounting groove 81; buckle 82; mounting space 83; first cover assembly 84; second cover assembly 85; third cover assembly 86; fourth cover assembly 87; fifth cover assembly 88; sixth cover assembly 89; first main body 840; first bracket 841; second bracket 842; second main body 850; first bending edge 851; third main body 860; second bending edge 861; third bracket 862; fourth main body 870; mounting hole 871; wire sleeve 872; fifth main body 890. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, 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.

[0036] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0037] See also Figure 1 The cleaning device 100 of the embodiment of the present invention is used to clean an air conditioning unit 200. The air conditioning unit 200 includes an indoor unit 210 and an outdoor unit 220 connected to the indoor unit 210. The cleaning device 100 is arranged outside the air conditioning unit 200. The cleaning device 100 includes a gas-liquid separator 10, a first pipe assembly 20 and a first pipe assembly 20. One end of the first pipe assembly 20 is detachably connected to the refrigerant pipe 221 of the outdoor unit 220, and the other end of the first pipe assembly 20 is connected to the air inlet 11 of the gas-liquid separator 10; one end of the second pipe assembly 30 is detachably connected to the refrigerant pipe 211 of the indoor unit 210, and the other end of the second pipe assembly 30 is connected to the air outlet 12 of the gas-liquid separator 10.

[0038] In the cleaning device 100 of the embodiment of the present invention, the cleaning device 100 is arranged outside the air conditioning unit 200, which can reduce the weight of the air conditioning unit 200 and reduce the failure rate during the operation of the air conditioning unit 200. In addition, since the cleaning device 100 is arranged outside the air conditioning unit 200, the structure of the cleaning device 100 is not limited by the structure of the air conditioning unit 200 itself, and the cleaning device 100 can effectively clean the refrigerant and refrigeration oil remaining in the indoor unit 210. During the trial operation of the air conditioning unit 200, the refrigerant can enter the gas-liquid separator 10 through the first pipe assembly 20, and can be separated in the gas-liquid separator 10, and the oil and impurities remain in the gas-liquid separator 10. Thereafter, the refrigerant flows into the indoor unit 210 from the second pipe assembly 30 and continues to circulate in the air conditioning unit 200. As the number of refrigerant cycles increases, more oil and impurities remain in the gas-liquid separator 10, thereby achieving effective cleaning of the refrigerant and refrigeration oil remaining in the indoor unit 210.

[0039] In addition, since the cleaning device 100 is arranged outside the air-conditioning unit 200, and the first pipe assembly 20 is detachably connected to the refrigerant pipe 221 of the outdoor unit 220, and the second pipe assembly 30 is detachably connected to the refrigerant pipe 211 of the indoor unit 210, after cleaning the residual refrigerant and refrigeration oil, the cleaning device 100 can be cleaned and reused, thereby reducing replacement costs.

[0040] Specifically, the cleaning device 100 is used to clean the refrigerant and refrigeration oil remaining in the air-conditioning unit 200. The cleaning device 100 is independently provided with the air-conditioning unit 200. The cleaning device 100 is provided outside the air-conditioning unit 200, and can be connected with the outdoor unit 220 and the indoor unit 210 inside the air-conditioning unit 200 through the first pipe assembly 20 and the second pipe assembly 30.

[0041] The air conditioning unit 200 may include an indoor unit 210, an outdoor unit 220, and a refrigerant connecting pipe 300 connecting the outdoor unit 220 and the indoor unit 210. When the indoor unit 210 needs to be cleaned, the indoor unit 210 and the outdoor unit 220 may be connected to the cleaning device 100, respectively, and the air conditioning unit 200 may be tested. At this time, the refrigerant can flow from the outdoor unit 220 to the cleaning device 100, further flow to the indoor unit 210, and flow to the outdoor unit 220 again. Through the refrigerant circulation, the refrigerant and refrigeration oil remaining in the indoor unit 210 are cleaned.

[0042] The first pipe assembly 20 is a component that connects the refrigerant pipe 221 of the outdoor unit 220 and the gas-liquid separator 10. The refrigerant can flow to the first pipe assembly 20 through the refrigerant pipe 221 of the outdoor unit 220, and flow to the air inlet 11 of the gas-liquid separator 10 through the first pipe assembly 20, thereby flowing into the gas-liquid separator 10.

[0043] The gas-liquid separator 10 is used to process the refrigerant. The gas-liquid separator 10 can separate the oil and impurities in the refrigerant, and keep the oil and impurities in the gas-liquid separator 10 to clean the refrigerant and the refrigeration oil. The number of the gas-liquid separators 10 can be one or more. For example, the number of the gas-liquid separators 10 can be two, three, four or even more.

[0044] The second pipe assembly 30 is an assembly that connects the refrigerant pipe 211 of the indoor unit 210 and the gas-liquid separator 10. The refrigerant processed by the gas-liquid separator 10 flows to the gas outlet 12 of the gas-liquid separator 10 through the second pipe assembly 30, thereby flowing out of the gas-liquid separator 10, and further flows to the refrigerant pipe 211 of the indoor unit 210. The refrigerant flowing into the indoor unit 210 further flows to the outdoor unit 220 through the refrigerant connecting pipe 300 between the indoor unit 210 and the outdoor unit 220, and flows to the gas-liquid separator 10 again to start the next cleaning.

[0045] The first pipe assembly 20 can be detachably connected to the refrigerant pipe 221 of the outdoor unit 220 by means of threaded connection, clamp connection or quick-connection connection. The second pipe assembly 30 can be detachably connected to the refrigerant pipe 211 of the indoor unit 210 by means of threaded connection, clamp connection or quick-connection connection.

[0046] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the gas-liquid separator 10 includes a first separator 13 and a second separator 14, the first pipeline assembly 20 includes a first air inlet pipe 21, a second air inlet pipe 22, a third air inlet pipe 23 and a first three-way valve 24, the first air inlet pipe 21, the second air inlet pipe 22 and the third air inlet pipe 23 are all connected to the first three-way valve 24, the first air inlet pipe 21 is connected to the refrigerant pipe 221 of the outdoor unit 220, the second air inlet pipe 22 is connected to the first separator 13, and the third air inlet pipe 23 is connected to the second separator 14;

[0047] The second pipe assembly 30 includes a first air outlet pipe 31, a second air outlet pipe 32, a third air outlet pipe 33 and a second three-way valve 34. The first air outlet pipe 31, the second air outlet pipe 32 and the third air outlet pipe 33 are all connected to the second three-way valve 34. The first air outlet pipe 31 is connected to the refrigerant pipe 211 of the indoor unit 210, the second air outlet pipe 32 is connected to the first separator 13, and the third air outlet pipe 33 is connected to the second separator 14.

[0048] In this way, by providing the first separator 13 and the second separator 14, the cleaning device 100 can simultaneously perform two-way separation processing on the refrigerant. This parallel processing mechanism can improve the cleaning efficiency, because the two-way separators can work at the same time, thereby speeding up the entire cleaning process. The first three-way valve 24 can divert the refrigerant flowing from the outdoor unit 220 to the first air inlet pipe 21, so that the refrigerant can enter the first separator 13 and the second separator 14 through the second air inlet pipe 22 and the third air inlet pipe 23. The second three-way valve 34 can merge the refrigerant flowing out of the second outlet pipe 32 and the third outlet pipe 33, and allow the merged refrigerant to flow into the indoor unit 210 through the first outlet pipe 31.

[0049] Specifically, the first separator 13 and the second separator 14 can be gas-liquid separators 10 of the same model, or gas-liquid separators 10 of different models. The number of the first separator 13 and the second separator 14 can be one or more. The number of the first air inlet pipe 21, the second air inlet pipe 22, the third air inlet pipe 23, the first three-way valve 24, the first air outlet pipe 31, the second air outlet pipe 32, the third air outlet pipe 33 and the second three-way valve 34 can be adaptively set according to the number of the first separator 13 and the second separator 14.

[0050] The first air inlet pipe 21, the second air inlet pipe 22, the third air inlet pipe 23, the first three-way valve 24, the first air outlet pipe 31, the second air outlet pipe 32, the third air outlet pipe 33 and the second three-way valve 34 can all be made of copper, aluminum or other pressure-resistant and temperature-resistant materials.

[0051] The first air intake pipe 21, the second air intake pipe 22 and the third air intake pipe 23 can be connected to the first three-way valve 24 by a non-detachable method such as welding, or by a detachable method such as threaded connection or flange connection.

[0052] The refrigerant can flow to the first air inlet pipe 21 through the refrigerant pipe 221 of the outdoor unit 220, and then flow to the first three-way valve 24 through the first air inlet pipe 21. The refrigerant is split at the three-way valve and flows to the second air inlet pipe 22 and the third air inlet pipe 23. The refrigerant flowing to the second air inlet pipe 22 flows into the first separator 13. The refrigerant flowing to the third air inlet pipe 23 flows into the second separator 14.

[0053] The refrigerant processed by the first separator 13 and the second separator 14 can flow out from the second outlet pipe 32 and the third outlet pipe 33. The outflowing refrigerant merges at the second three-way valve 34, and further flows to the refrigerant pipe 211 of the indoor unit 210 through the first outlet pipe 31, thereby flowing into the indoor unit 210.

[0054] See also Figure 1 and Figure 2 In some embodiments, the first pipeline assembly 20 also includes a filter 25 and a first connecting pipe 26, one end of the filter 25 is connected to the first air intake pipe 21, the other end of the filter 25 is connected to the first connecting pipe 26, and a first valve 27 is provided at one end of the first connecting pipe 26 away from the filter 25.

[0055] In this way, the filter 25 can protect the first separator 13 and the second separator 14 from being damaged by large particles of impurities. By filtering out these impurities before entering the separator, the service life of the separator can be extended and the maintenance cost can be reduced. The first valve 27 can be set to cut off the path of the refrigerant flowing to the filter 25 when necessary, or control the refrigerant flow to the filter 25 to avoid excessive refrigerant flow into the filter 25, thereby ensuring the filtering performance of the filter 25.

[0056] Specifically, the filter 25 can be used to remove solid particles in the refrigerant, thereby pre-treating the refrigerant that will flow into the first separator 13 and the second separator 14 .

[0057] The first connecting pipe 26 is a pipe for connecting the filter 25 and the first valve 27, and is used to transport the refrigerant. The first connecting pipe 26 can be made of copper, aluminum or other pressure-resistant and temperature-resistant materials. The first connecting pipe 26 can be connected to the first valve 27 by a non-detachable method such as welding, or by a detachable method such as a threaded connection or a flange connection.

[0058] The first valve 27 can be a bidirectional ball valve, a gate valve, a butterfly valve or other valve components. The first valve 27 has a switching function and can be used to control the flow rate and pressure of the refrigerant flowing into the filter 25 .

[0059] See also Figure 1 and Figure 2 In some embodiments, the first pipe assembly 20 also includes a second connecting pipe 28 and a first nozzle 29, one end of the second connecting pipe 28 is connected to the first valve 27, the other end of the second connecting pipe 28 is detachably connected to the first nozzle 29, and the first nozzle 29 is detachably connected to the refrigerant pipe 221 of the outdoor unit 220.

[0060] When the outdoor unit 220 of the air conditioner has different capacities, the diameter of the refrigerant pipe 221 of the outdoor unit 220 also varies. Since the first nozzle 29, the second connecting pipe 28 and the refrigerant pipe 221 of the outdoor unit 220 can be detachably connected, the first nozzle 29 of different diameters can be disassembled and replaced to adapt to the refrigerant pipe 221 of the outdoor unit 220 of different diameters, so that the cleaning device has a wide range of adaptability.

[0061] Specifically, the second connecting pipe 28 is a pipe for connecting the first valve 27 and the first nozzle 29, and is used to transport the refrigerant. The second connecting pipe 28 can be made of copper, aluminum or other pressure-resistant and temperature-resistant materials. The second connecting pipe 28 can be connected to the first valve 27 by a non-detachable method such as welding, or by a detachable method such as a threaded connection or a flange connection.

[0062] The first connecting pipe 26 can be detachably connected to the first nut 29 by means of threaded connection, clamp connection or quick-connection connection.

[0063] The first nut 29 that meets the requirements can be obtained by selection. The first nut 29 can be a quick-plug nut, a spiral nut, or a nut in other forms. The first nut 29 can be detachably connected to the refrigerant pipe 221 of the outdoor unit 220 by means of threaded connection, clamp connection, or quick plug connector connection.

[0064] See also Figure 1 and Figure 3 In some embodiments, a second valve 35 is provided at one end of the first air outlet pipe 31 away from the second three-way valve 34 .

[0065] In this way, by setting the second valve 35 at one end of the first air outlet pipe 31 away from the second three-way valve 34, the path for the refrigerant to flow out of the cleaning device 100 can be cut off when necessary, or the flow rate of the refrigerant flowing out of the first air outlet pipe 31 can be controlled, so that the refrigerant can be fully separated in the gas-liquid separator 10 before flowing out of the cleaning device 100, thereby improving the cleaning effect of the refrigerant.

[0066] Specifically, the second valve 35 can be a two-way ball valve, gate valve or butterfly valve, etc. The second valve 35 has a switch function and can be used to control the flow rate and pressure of the refrigerant flowing into the first outlet pipe 31. The first outlet pipe 31 can be connected to the second valve 35 by a non-detachable method such as welding, or by a detachable method such as threaded connection or flange connection.

[0067] See also Figure 1 and Figure 3 In some embodiments, the second pipe assembly 30 also includes a third connecting pipe 36 and a second nozzle 37, one end of the third connecting pipe 36 is connected to the second valve 35, the other end of the third connecting pipe 36 is detachably connected to the second nozzle 37, and the second nozzle 37 is detachably connected to the refrigerant pipe 211 of the indoor unit 210.

[0068] When the indoor unit 210 of the air conditioner has different capacities, the diameter of the refrigerant pipe 211 of the indoor unit 210 also varies. Since the second nozzle 37, the third connecting pipe 36 and the refrigerant pipe 211 of the indoor unit 210 are all detachably connected, the second nozzle 37 of different diameters can be disassembled and replaced to adapt to the refrigerant pipe 211 of the indoor unit 210 of different diameters, so that the cleaning device has a wide range of adaptability.

[0069] Specifically, the third connecting pipe 36 is a pipe for connecting the second valve 35 and the second nozzle 37, and is used to transport the refrigerant. The third connecting pipe 36 can be made of copper, aluminum or other pressure-resistant and temperature-resistant materials. The third connecting pipe 36 can be connected to the second valve 35 by a non-detachable method such as welding, or by a detachable method such as a threaded connection or a flange connection.

[0070] The third connecting pipe 36 can be detachably connected to the second nut 37 by means of threaded connection, clamp connection or quick-insert connector connection.

[0071] The second nut 37 that meets the requirements can be obtained by selection. The second nut 37 can be a quick-plug nut, a spiral nut, or a nut in other forms. The second nut 37 can be detachably connected to the refrigerant pipe 211 of the indoor unit 210 by means of threaded connection, clamp connection, or quick-plug connector connection.

[0072] See also Figure 1 and Figure 4 In some embodiments, the cleaning device 100 also includes an oil drain pipe assembly 40, the oil drain pipe assembly 40 includes an oil drain pipeline 41 and a third valve 42, the gas-liquid separator 10 is provided with an oil drain port 15, one end of the oil drain pipe is connected to the oil drain port 15, and the other end of the oil drain pipeline 41 is connected to the third valve 42.

[0073] In this way, the setting of the oil drain pipe assembly 40 enables the waste oil and impurities in the gas-liquid separator 10 to be discharged in time, preventing the waste oil and impurities from accumulating too much and affecting the separation effect of the gas-liquid separator 10, thereby improving the cleaning efficiency. The setting of the third valve 42 can provide precise control of the waste oil discharge. The operator can open or close the third valve 42 in time according to the specific situation of the cleaning process, thereby effectively managing the discharge time and discharge amount of the waste oil.

[0074] Specifically, the oil drain pipe assembly 40 can be used to discharge the waste oil and impurities in the gas-liquid separator 10. The oil drain pipe 41 can be made of stainless steel, copper or other corrosion-resistant materials to adapt to the chemical properties of the waste oil. The third valve 42 can be a valve such as a ball valve, a gate valve or a butterfly valve. The third valve 42 can have a check function to prevent the waste oil and impurities from flowing back.

[0075] The oil drain port 15 is an interface on the gas-liquid separator 10 for discharging waste oil and impurities. The oil drain port 15 can be set as a threaded interface, a flange interface or other forms to meet different connection requirements. The oil drain port 15 can be set at the lowest point of the gas-liquid separator 10, thereby improving the discharge rate of waste oil and impurities in the gas-liquid separator 10 and reducing the probability of waste oil and impurities remaining in the gas-liquid separator 10.

[0076] The oil drain pipe 41 can be connected to the oil drain port 15 by a non-detachable method such as welding, or by a detachable method such as threaded connection or flange connection. The oil drain pipe 41 can be connected to the third valve 42 by a non-detachable method such as welding, or by a detachable method such as threaded connection or flange connection.

[0077] See also Figure 1 and Figure 4 In some embodiments, the gas-liquid separator 10 includes a first separator 13 and a second separator 14, the oil drain pipeline 41 includes a first oil drain pipe 410, a second oil drain pipe 411, a third oil drain pipe 412 and a third three-way valve 413, the first oil drain pipe 410, the second oil drain pipe 411 and the third oil drain pipe 412 are all connected to the third three-way valve 413, the first oil drain pipe 410 is connected to the first separator 13, the second oil drain pipe 411 is connected to the second separator 14, and the third oil drain pipe 412 is connected to the third valve 42.

[0078] In this way, by providing the first oil drain pipe 410, the second oil drain pipe 411 and the third oil drain pipe 412, waste oil and impurities can be discharged from the two separators and the third valve 42 at the same time. This multi-path discharge method can significantly improve the efficiency of waste oil and impurity discharge. The second three-way valve 34 can merge the waste oil and impurities flowing out of the second oil drain pipe 411 and the third oil drain pipe 412, and make the waste oil and impurities flow out from the first oil drain pipe 410.

[0079] Specifically, the first oil drain pipe 410, the second oil drain pipe 411, the third oil drain pipe 412 and the third three-way valve 413 can all be made of stainless steel, copper or other corrosion-resistant materials to adapt to the chemical properties of the waste oil. The first oil drain pipe 410, the second oil drain pipe 411 and the third oil drain pipe 412 can all be connected to the third three-way valve 413 by welding or other non-detachable methods, or by threaded connection, flange connection or other detachable methods.

[0080] When it is necessary to discharge the waste oil and impurities in the gas-liquid separator 10, the third valve 42 can be opened. The waste oil in the first separator 13 flows out of the first separator 13 through the first oil drain pipe 410. The waste oil in the second separator 14 flows out of the second separator 14 through the second oil drain pipe 411. The waste oil flowing out of the two separators is combined through the second three-way valve 34, and further flows to the third oil drain pipe 412, and flows out of the cleaning device 100 through the third valve 42.

[0081] See also Figure 1 and Figure 5 In some embodiments, the cleaning device 100 further includes a support member 50 , the gas-liquid separator 10 is mounted on the support member 50 , and a plurality of universal wheels 60 are disposed on a side of the support member 50 facing away from the gas-liquid separator 10 .

[0082] Thus, by providing a plurality of universal wheels 60 , the position of the cleaning device 100 can be quickly adjusted to meet different cleaning requirements. At the same time, the plurality of universal wheels 60 facilitates the transportation of the cleaning device 100 .

[0083] Specifically, the number of the universal wheels 60 can be two, three, four or even more. For example, the number of the universal wheels 60 can be four, and the four universal wheels 60 can be arranged on the support member 50 in a rectangular shape. The universal wheels 60 can be arranged on the support member 50 in a detachable manner such as bolt connection, clamping, etc., or can be arranged on the support member 50 in a non-detachable manner such as welding, riveting, etc. For example, the universal wheels 60 and the support member 50 are detachably connected by connecting bolts.

[0084] The gas-liquid separator 10 can be installed on the support member 50 by a detachable connection method such as bolt connection, clamping, etc., or can be installed on the support member 50 by a non-detachable method such as welding, riveting, etc.

[0085] See also Figure 5 In some embodiments, a plurality of crimping nuts 70 are provided on the support member 50 , and the plurality of crimping nuts 70 are used to fix the gas-liquid separator 10 , so that the gas-liquid separator 10 can remain stable during the movement of the cleaning device 100 .

[0086] See also Figure 6 and Figure 7 In some embodiments, the cleaning device 100 further includes a box assembly 80 , which is detachably connected to the support member 50 , and a mounting groove 81 is provided on the box assembly 80 , and the box assembly 80 includes a buckle 82 , which is snapped into the mounting groove 81 .

[0087] Thus, the design of the buckle 82 makes it more convenient to install and remove the box assembly 80. The operator can easily connect the box assembly 80 with the support member 50 or easily separate the box assembly 80 from the support member 50 through the buckle 82, thereby improving the convenience of operation.

[0088] Specifically, the box assembly 80 has an installation space 83. The gas-liquid separator 10 can be disposed in the installation space 83. The box assembly 80 can protect the gas-liquid separator 10 from environmental factors, thereby improving the reliability of the gas-liquid separator 10.

[0089] The box assembly 80 may include a first cover assembly 84, a second cover assembly 85, a third cover assembly 86, a fourth cover assembly 87, a fifth cover assembly 88, and a sixth cover assembly 89. The first cover assembly 84, the second cover assembly 85, the third cover assembly 86, and the fourth cover assembly 87 may be fixed around the support member 50 by threaded connection.

[0090] The first cover assembly 84 may include a first body 840, a first bracket 841 and a second bracket 842. The first body 840 is a main contour shape portion of the first cover assembly 84. The first bracket 841 and the second bracket 842 may both be brackets made of sheet metal or steel.

[0091] The first bracket 841 can be arranged on the first main body 840 by a detachable connection method such as bolt connection or clamping, or can be arranged on the first main body 840 by a non-detachable method such as welding or riveting. The first bracket 841 is connected to the first pipe assembly 20. The first bracket 841 can be used to fix the first pipe assembly 20 to reduce the probability of the first pipe assembly 20 being broken during transportation or operation.

[0092] The second bracket 842 can be provided on the first main body 840 by a detachable connection method such as bolt connection or clamping, or can be provided on the first main body 840 by a non-detachable method such as welding or riveting. The second bracket 842 is connected to the second pipe assembly 30. The second bracket 842 can be used to fix the second pipe assembly 30 to reduce the probability of the second pipe assembly 30 breaking during transportation or operation.

[0093] The second cover plate assembly 85 may include a second main body 850 and a first bending edge 851. The second main body 850 is a main contour shape portion of the second cover plate assembly 85. Both sides of the second main body 850 are provided with a first bending edge 851. One of the first bending edges 851 may be connected to the first main body 840 by a detachable connection such as bolt connection or clamping, or may be connected by a non-detachable connection such as welding or riveting.

[0094] See also Figure 8 The third cover plate assembly 86 may include a third main body 860, a second bending edge 861 and a third bracket 862. The third main body 860 is the main contour shape part of the third cover plate assembly 86. Second bending edges 861 are provided on both sides of the third main body 860. One of the second bending edges 861 may be connected to the first main body 840 by a detachable connection such as bolt connection or clamping, or may be connected by a non-detachable connection such as welding or riveting. The third bracket 862 may be a bracket made of materials such as sheet metal or steel.

[0095] The third bracket 862 can be provided on the third main body 860 by a detachable connection method such as bolt connection or clamping, or can be provided on the third main body 860 by a non-detachable method such as welding or riveting. The third bracket 862 is connected to the first pipe assembly 20. The third bracket 862 can be used to fix the first pipe assembly 20 to reduce the probability of the first pipe assembly 20 being broken during transportation or operation.

[0096] The fourth cover plate assembly 87 may include a fourth main body 870 and a mounting hole 871 provided on the fourth main body 870. A wire sleeve 872 is provided in the mounting hole 871. The mounting hole 871 is used for the first pipe assembly 20 and the second pipe assembly 30 to pass through. The wire sleeve 872 may be provided in the mounting hole 871 by bonding. The fourth main body 870 is a main contour shape portion of the fourth cover plate assembly 87. The mounting hole 871 may be a through hole provided on the fourth main body 870. The wire sleeve 872 may be made of materials such as plastic or rubber. The wire sleeve 872 may prevent the first pipe assembly 20 and the second pipe assembly 30 from interfering with the fourth main body 870 during assembly or disassembly, thereby reducing the probability of the first pipe assembly 20 and the second pipe assembly 30 being damaged due to collision or wear, thereby improving the service life of the first pipe assembly 20 and the second pipe assembly 30.

[0097] The fifth cover plate assembly 88 can be fixed to the first cover plate assembly 84, the second cover plate assembly 85 and the third cover plate assembly 86 in a detachable manner such as threaded connection or clamping, or can be fixed to the first cover plate assembly 84, the second cover plate assembly 85 and the third cover plate assembly 86 in a non-detachable manner such as welding or riveting. The fifth cover plate assembly 88 can be arranged above the gas-liquid separator 10.

[0098] The sixth cover plate assembly 89 can be fixed to the second cover plate assembly 85 and the third cover plate assembly 86 in a detachable manner such as threaded connection and clamping, or can be fixed to the second cover plate assembly 85 and the third cover plate assembly 86 in a non-detachable manner such as welding and riveting.

[0099] The sixth cover plate assembly 89 may include a fifth main body 890 and a mounting groove 81 provided on the fifth main body 890. A buckle 82 may be snapped into the mounting groove 81. The fifth main body 890 is the main contour shape portion of the sixth cover plate assembly 89. One end of the fifth main body 890 may be connected to the fourth main body 870 by a detachable connection such as bolt connection or snap connection. The other end of the fifth main body 890 may be connected to the fifth cover plate assembly 88 by a detachable connection such as bolt connection or snap connection, or may be connected by a non-detachable connection such as welding or riveting.

[0100] The fifth main body 890 can also be connected to one of the first bent edges 851 of the second cover assembly 85 by a detachable connection such as bolt connection or clamping, or by a non-detachable connection such as welding or riveting. The fifth main body 890 can also be connected to one of the second bent edges 861 of the third cover assembly 86 by a detachable connection such as bolt connection or clamping, or by a non-detachable connection such as welding or riveting.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0102] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cleaning device for cleaning an air conditioning unit, the air conditioning unit comprising an indoor unit and an outdoor unit connected to the indoor unit, characterized in that: The cleaning device is arranged outside the air conditioning unit, and the cleaning device comprises: Gas-liquid separator; a first pipe assembly, one end of which is detachably connected to the refrigerant pipe of the outdoor unit, and the other end of which is connected to the air inlet of the gas-liquid separator; A second pipe assembly, one end of which is detachably connected to the refrigerant pipe of the indoor unit, and the other end of which is connected to the air outlet of the gas-liquid separator.

2. The cleaning device according to claim 1, characterized in that: The gas-liquid separator comprises a first separator and a second separator, the first pipeline assembly comprises a first air inlet pipe, a second air inlet pipe, a third air inlet pipe and a first three-way valve, the first air inlet pipe, the second air inlet pipe and the third air inlet pipe are all connected to the first three-way valve, the first air inlet pipe is connected to the refrigerant pipe of the outdoor unit, the second air inlet pipe is connected to the first separator, and the third air inlet pipe is connected to the second separator; The second pipe assembly includes a first air outlet pipe, a second air outlet pipe, a third air outlet pipe and a second three-way valve. The first air outlet pipe, the second air outlet pipe and the third air outlet pipe are all connected to the second three-way valve. The first air outlet pipe is connected to the refrigerant pipe of the indoor unit. The second air outlet pipe is connected to the first separator, and the third air outlet pipe is connected to the second separator.

3. The cleaning device according to claim 2, characterized in that: The first pipeline assembly also includes a filter and a first connecting pipe, one end of the filter is connected to the first air intake pipe, the other end of the filter is connected to the first connecting pipe, and a first valve is provided at one end of the first connecting pipe away from the filter.

4. The cleaning device according to claim 3, characterized in that: The first pipeline assembly also includes a second connecting pipe and a first nozzle, one end of the second connecting pipe is connected to the first valve, the other end of the second connecting pipe is detachably connected to the first nozzle, and the first nozzle is detachably connected to the refrigerant pipe of the outdoor unit.

5. The cleaning device according to claim 2, characterized in that: A second valve is disposed at one end of the first air outlet pipe away from the second three-way valve.

6. The cleaning device according to claim 5, characterized in that: The second pipe assembly also includes a third connecting pipe and a second nozzle, one end of the third connecting pipe is connected to the second valve, the other end of the third connecting pipe is detachably connected to the second nozzle, and the second nozzle is detachably connected to the refrigerant pipe of the indoor unit.

7. The cleaning device according to claim 1, characterized in that: The cleaning device also includes an oil drain pipe assembly, which includes an oil drain pipeline and a third valve. The gas-liquid separator is provided with an oil drain port, one end of the oil drain pipe is connected to the oil drain port, and the other end of the oil drain pipe is connected to the third valve.

8. The cleaning device according to claim 7, characterized in that: The gas-liquid separator includes a first separator and a second separator, the oil drain pipeline includes a first oil drain pipe, a second oil drain pipe, a third oil drain pipe and a third three-way valve, the first oil drain pipe, the second oil drain pipe and the third oil drain pipe are all connected to the third three-way valve, the first oil drain pipe is connected to the first separator, the second oil drain pipe is connected to the second separator, and the third oil drain pipe is connected to the third valve.

9. The cleaning device according to claim 1, characterized in that: The cleaning device further comprises a support member, the gas-liquid separator is mounted on the support member, and a plurality of universal wheels are arranged on a side of the support member away from the gas-liquid separator.

10. The cleaning device according to claim 9, characterized in that: The cleaning device also includes a box assembly, which is detachably connected to the support member. The box assembly is provided with a mounting groove, and the box assembly includes a buckle, which is snapped into the mounting groove.

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