Air conditioner refrigerant filling structure, air conditioning system and operation machine

Abstract

The utility model relates to the technical field of operation machinery, and discloses an air conditioner refrigerant filling structure, an air conditioner system and operation machinery. The air conditioner refrigerant filling structure comprises a three-way adapter and a filling pipe, the first end of the three-way adapter is suitable for being communicated with an exhaust port or an air inlet of a compressor, the second end of the three-way adapter is suitable for being communicated with a refrigerant pipe, one end of the filling pipe is connected with the third end of the three-way adapter, and the other end of the filling pipe extends to a machine top cover of an operation machine to form a refrigerant filling port. And an end cover capable of being opened and closed is arranged on the refrigerant filling port. According to the utility model, the refrigerant filling port is led out to the machine top cover through the three-way adapter and the filling pipe, so that the refrigerant filling port can be seen by opening the machine top cover, the refrigerant can be directly filled into the refrigerant filling port only by opening the end cover on the refrigerant filling port during refrigerant filling, and the convenience of refrigerant filling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of operating machinery, in particular to an air-conditioning refrigerant filling structure, an air-conditioning system and an operating machinery. Background Art

[0002] Operating machinery refers to mechanical equipment used in civil engineering, construction engineering, road engineering and other fields. It is mainly used for earth excavation, earth filling, transportation, compaction, leveling, concrete construction, pile foundation construction, lifting and hoisting, etc. Common operating machinery includes excavators, loaders, bulldozers, rollers, concrete mixers, cranes, etc.

[0003] In the prior art, the air conditioner of the operating machinery realizes refrigeration through the change of the physical state of the refrigerant. The refrigerant directly affects the refrigeration effect, so the refrigerant filling becomes particularly important. Usually, the refrigerant filling port is designed in a large and unobstructed position. However, since the compressor is connected to the engine, the position of the compressor is fixed according to the position of the engine, so the compressor is sometimes located at a lower position of the whole machine. When the compressor is located at a lower position, it is not convenient to fill the refrigerant, resulting in difficulty in refrigerant filling. Utility Model Content

[0004] In view of this, the utility model provides an air-conditioning refrigerant filling structure, an air-conditioning system and an operating machine to solve the problem that when the compressor is located at a lower position, it is inconvenient to fill the refrigerant, resulting in difficulty in refrigerant filling.

[0005] In a first aspect, the utility model provides an air conditioning refrigerant filling structure, comprising:

[0006] A three-way adapter, the first end of which is suitable for communicating with the exhaust port or the air inlet of the compressor, and the second end of which is suitable for communicating with the refrigerant pipe;

[0007] A filling pipe has one end connected to the third end of the three-way adapter and the other end extending to the top cover of the operating machine to form a refrigerant filling port, and an openable and closable end cover is provided on the refrigerant filling port.

[0008] Beneficial effects: The refrigerant filling structure of the air conditioner connects the first end of the three-way adapter to the exhaust port or the air inlet of the compressor, the second end to the refrigerant pipe, and the third end to one end of the filling pipe. The other end of the filling pipe is extended to the top cover of the operating machine to form a refrigerant filling port, and an openable and closable end cover is provided on the refrigerant filling port. The refrigerant filling port is led out to the top cover through the three-way adapter and the filling pipe, so that the refrigerant filling port can be seen by opening the top cover. When filling the refrigerant, only the end cover on the refrigerant filling port needs to be opened to directly fill the refrigerant into the refrigerant filling port, thereby improving the convenience of refrigerant filling.

[0009] In an optional embodiment, the three-way adapter includes a connector body, the first end and the second end are bent along two ends of the connector body respectively, and the third end is arranged on the connector body between the first end and the second end.

[0010] Beneficial effect: The first end, the second end and the third end of the three-way adapter can be bent in different directions respectively, so that the three-way adapter can be connected to the compressor, the refrigerant pipe and the filling pipe respectively in a narrow space.

[0011] In an optional embodiment, the first end of the three-way adapter is connected to the compressor via a fastener.

[0012] Beneficial effect: The first end of the three-way adapter is connected to the compressor through the fastener, thereby ensuring the stability of the connection between the three-way adapter and the compressor.

[0013] In a second aspect, the utility model further provides an air conditioning system, comprising a compressor, a condenser and an evaporator connected by a refrigerant pipe to form a circulation loop, and further comprising:

[0014] Two of the air conditioning refrigerant filling structures, the first end of one of the three-way adapters is connected to the exhaust port of the compressor, and the second end is connected to the refrigerant pipe between the compressor and the condenser; the first end of the other three-way adapter is connected to the air inlet of the compressor, and the second end is connected to the refrigerant pipe between the compressor and the evaporator;

[0015] One end of the two filling pipes is respectively connected to the third ends of the two three-way adapters in a one-to-one correspondence, and the other end extends to the top cover of the operating machine.

[0016] Beneficial effect: This air conditioning system, by setting two air conditioning refrigerant filling structures, connects the first end of a three-way adapter to the exhaust port of the compressor, and the second end to the refrigerant pipe between the compressor and the condenser. The first end of another three-way adapter is connected to the air inlet of the compressor, and the second end is connected to the refrigerant pipe between the compressor and the evaporator, ensuring that the refrigerant in the air conditioning system can circulate normally between the compressor, the condenser and the evaporator. At the same time, the two filling pipes are connected to the two three-way adapters correspondingly and extend to the top cover of the operating machinery, so that the refrigerant filling ports of the two filling pipes can be easily seen when the top cover is opened. When refrigerant needs to be added, only the end cover on the refrigerant filling port needs to be opened, and refrigerant can be added to the refrigerant filling ports of the two filling pipes at the same time, so that the refrigerant entering both sides of the compressor is balanced, thereby ensuring the pressure in the refrigerant pipe is stable, and also improving the convenience of refrigerant filling. This design optimizes the system structure and improves the convenience and efficiency of operation.

[0017] In an optional embodiment, the refrigerant filling ports of the two filling pipes are adjacent to each other and spaced apart.

[0018] Beneficial effect: By arranging the refrigerant filling ports of the two filling pipes adjacent to each other, it is convenient to fill the two refrigerant filling ports with refrigerant at the same time, thereby improving the operation efficiency. The refrigerant filling ports of the two filling pipes are arranged at intervals, that is, an installation space is left between the two refrigerant filling ports, ensuring that the two refrigerant filling ports can be connected to external filling guns at the same time.

[0019] In an optional embodiment, the inner diameters of the two filling pipes are different, wherein the inner diameter of the filling pipe connected to the exhaust port of the compressor is smaller than the inner diameter of the filling pipe connected to the intake port of the compressor.

[0020] Beneficial effect: After the refrigerant is compressed by the compressor, the refrigerant in the refrigerant pipe is in a high temperature and high pressure state. By designing the inner diameter of the filling pipe connected to the exhaust port of the compressor to be thinner, the pressure of the refrigerant in the filling pipe is ensured.

[0021] In an optional embodiment, two filling nozzles are further included, and the two filling nozzles are arranged in a one-to-one correspondence with the two refrigerant filling ports, and the end cover is detachably connected to the filling nozzles.

[0022] Beneficial effects: By setting two filling nozzles corresponding to the two refrigerant filling ports, the filling device can be better adapted, thereby improving the stability and safety of refrigerant filling and preventing accidents caused by refrigerant leakage or improper filling. The end cover is detachably connected to the filling nozzle, so that the end cover on the filling nozzle can be removed during the refrigerant filling process. When the refrigerant filling is completed, the end cover is re-covered on the filling nozzle, which is convenient for sealing the refrigerant in the refrigerant pipe and preventing refrigerant leakage.

[0023] In an optional embodiment, a support member is further included, and two slots are provided on the support member at positions corresponding to the two filling nozzles, and the two filling nozzles are respectively positioned in the two slots.

[0024] Beneficial effect: By installing the filling nozzle in the slot of the support, the filling nozzle can be effectively fixed and stabilized, so that the distance and position between the two filling nozzles are relatively fixed, avoiding shaking or displacement during the filling process, ensuring the accuracy and stability of the filling, and improving work efficiency and accuracy.

[0025] In an optional embodiment, a fastening connector is further provided on the support member, and the fastening connector is provided between the two slots. The support member is installed at the installation position of the working machine through the fastening connector.

[0026] Beneficial effect: The support is installed on the installation position of the operating machine by fastening the connecting piece, so that the support is fixed in the operating machine, and then the two oil nozzles are fixed, thereby increasing the stability and safety of the entire system and avoiding loosening or falling off during operation.

[0027] In a third aspect, the utility model further provides an operating machine, comprising:

[0028] Top cover;

[0029] In the air conditioning system, the refrigerant filling port of the filling pipe extends to the top cover.

[0030] Beneficial effect: This operating machine is connected to two three-way adapters through two filling pipes, and extends to the top cover of the operating machine, so that the refrigerant filling ports of the two filling pipes can be easily seen when the top cover is opened, thereby improving the convenience and efficiency of refrigerant filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a structural schematic diagram of an air conditioning refrigerant filling structure according to an embodiment of the utility model;

[0033] Figure 2 This is a structural schematic diagram of a three-way adapter in an air conditioning refrigerant filling structure according to an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the coordination between a filling nozzle and a supporting member in an air-conditioning refrigerant filling structure according to an embodiment of the utility model;

[0035] Figure 4 It is a structural schematic diagram of another perspective of the cooperation between a filling nozzle and a supporting member in an air-conditioning refrigerant filling structure according to an embodiment of the utility model;

[0036] Figure 5 The present invention is a schematic structural diagram of the cooperation between a filling gun and a filling nozzle in an air-conditioning refrigerant filling structure according to an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Three-way adapter; 101. First end; 102. Second end; 103. Third end; 104. Connector body; 2. Compressor; 201. Exhaust port; 202. Inlet port; 3. Refrigerant pipe; 4. Filling pipe; 401. Refrigerant filling port; 5. End cover; 6. Filling nozzle; 7. Support member; 701. Slot; 702. Fastening connector; 8. Fastener; 9. Filling gun; 901. Filling hole; 902. Pressure sensor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0040] In the related art, the air conditioner of the operating machinery realizes refrigeration through the change of the physical state of the refrigerant. The refrigerant directly affects the refrigeration effect, so the refrigerant filling becomes particularly important. Usually, the refrigerant filling port is designed in a large and unobstructed location. However, since the compressor is connected to the engine, the position of the compressor is fixed according to the position of the engine. Therefore, the compressor is sometimes located at a lower position of the whole machine. When the compressor is located at a lower position, it is not convenient to add refrigerant, which makes it difficult to add refrigerant.

[0041] In order to solve the above technical problems, the following Figures 1 to 5 , describing an embodiment of the utility model.

[0042] According to an embodiment of the present utility model, on the one hand, as Figure 1 and Figure 2 As shown, an air conditioning refrigerant filling structure is provided, including a three-way adapter 1 and a filling pipe 4.

[0043] Specifically, combined Figure 1 and Figure 2 As shown, the three-way adapter 1 has a first end 101 , a second end 102 and a third end 103 , wherein the first end 101 is suitable for communicating with the exhaust port 201 or the air inlet 202 of the compressor 2 , and the second end 102 is suitable for communicating with the refrigerant pipe 3 .

[0044] Specifically, Figure 1 As shown, one end of the filling pipe 4 is connected to the third end 103 of the three-way adapter 1, and the other end of the filling pipe 4 extends to the top cover of the operating machine to form a refrigerant filling port 401, and the refrigerant filling port 401 is provided with an openable and closable end cover 5.

[0045] In this air conditioner refrigerant filling structure, the first end 101 of the three-way adapter 1 is connected to the exhaust port 201 or the air inlet 202 of the compressor 2, the second end 102 is connected to the refrigerant pipe, the third end 103 is connected to one end of the filling pipe 4, the other end of the filling pipe 4 is extended to the top cover of the operating machine to form a refrigerant filling port 401, and an openable and closable end cover 5 is provided on the refrigerant filling port 401. The refrigerant filling port 401 is led out to the top cover by the three-way adapter 1 and the filling pipe 4, so that the refrigerant filling port 401 can be seen by opening the top cover. When filling the refrigerant, only the end cover 5 on the refrigerant filling port 401 needs to be opened to directly fill the refrigerant into the refrigerant filling port 401, thereby improving the convenience of refrigerant filling.

[0046] Compared with the existing mechanism, the embodiment of the present application only needs to set a three-way adapter 1 and a filling pipe 4 at the exhaust port 201 and the air inlet 202 of the compressor 2 respectively, so that the refrigerant filling port 401 can be set at a convenient filling position without changing the position or design parameters of the original mechanism such as the compressor 2, thereby improving the convenience of refrigerant filling.

[0047] Specifically, the three-way adapter 1 can select any existing three-way adapter as needed. In the embodiment of the present application, the structure of the three-way adapter 1 is not specifically limited.

[0048] Specifically, the filling pipe 4 can be made of a soft tube, or a hard tube or other pipe materials suitable for transporting refrigerant. In the embodiment of the present application, there is no specific limitation on the type of the filling pipe 4.

[0049] Specifically, the end cover 5 can be opened and closed on the refrigerant filling port 401. The end cover 5 and the refrigerant filling port 401 can be opened and closed by a threaded connection, or by a snap connection. In the embodiment of the present application, the opening and closing method of the end cover 5 is not specifically limited.

[0050] Exemplarily, in order to ensure the sealing effect and stable fixation of the end cover 5 to the refrigerant filling port 401, a threaded connection is used to combine the end cover 5 with the refrigerant filling port 401 to achieve the openable and closable function of the end cover 5.

[0051] In one embodiment, if Figure 2 As shown, the three-way adapter 1 includes a connector body 104 , a first end 101 and a second end 102 are bent along two ends of the connector body 104 , respectively, and a third end 103 is arranged on the connector body 104 between the first end 101 and the second end 102 , and the third end 103 is arranged perpendicular to the connector body 104 .

[0052] The first end 101, the second end 102 and the third end 103 of the three-way adapter 1 can be bent in different directions, so that the three-way adapter 1 can be connected to the compressor 2, the refrigerant pipe and the filling pipe 4 in a narrow space. The third end 103 of the three-way adapter 1 is arranged vertically with the connector body 104, which is conducive to the filling pipe 4 being arranged vertically upward toward the top cover of the operating machine, and the other end of the filling pipe 4 is arranged at the top cover.

[0053] Specifically, the connector body 104 can be configured to be in a long strip shape, or in an "L" shape, etc., and any shape can be selected as needed. In the embodiment of the present application, the shape of the connector body 104 is not specifically limited.

[0054] Specifically, a chamfer may be provided at the bend of the three-way adapter 1 to facilitate the circulation of the refrigerant in the three-way adapter 1 .

[0055] Specifically, the pipe diameters of the first end 101, the second end 102 and the third end 103 of the three-way adapter 1 can be set to the same pipe diameter or to different pipe diameters. In the embodiment of the present application, no specific restrictions are imposed on the pipe diameters of the first end 101, the second end 102 and the third end 103.

[0056] In one embodiment, if Figure 2 As shown, the first end 101 of the three-way adapter is connected to the compressor 2 via the fastener 8 .

[0057] When installing the three-way adapter 1 , the first end 101 of the three-way adapter 1 is fixed to the compressor 2 by tightening the fastener 8 to ensure the stability of the connection between the three-way adapter 1 and the compressor 2 .

[0058] It should be noted that the air conditioning refrigerant filling structure can be used in various air conditioning systems that require refrigerant filling, including household air conditioning, commercial air conditioning, industrial air conditioning, and some special-purpose air conditioning equipment, and can also be applied to other refrigeration equipment and systems that require refrigerant filling, such as refrigeration cabinets, refrigeration vehicles, etc. In the embodiments of the present application, the use scenarios of the air conditioning refrigerant filling structure are not specifically limited.

[0059] According to an embodiment of the present utility model, on the other hand, Figure 1 and Figure 2 As shown, an air conditioning system is also provided, including a compressor 2, a condenser, an evaporator and two air conditioning refrigerant filling structures.

[0060] Specifically, the compressor 2, the condenser and the evaporator are connected via the refrigerant pipe 3 to form a circulation loop.

[0061] Specifically, Figure 1As shown, the first end 101 of one of the three-way adapters 1 is connected to the exhaust port 201 of the compressor 2, and the second end 102 of the three-way adapter 1 is connected to the refrigerant pipe 3 between the compressor 2 and the condenser. The first end 101 of the other three-way adapter 1 is connected to the air inlet 202 of the compressor 2, and the second end 102 of the three-way adapter 1 is connected to the refrigerant pipe 3 between the compressor 2 and the evaporator.

[0062] Specifically, Figure 1 As shown, one end of the two filling pipes 4 is connected to the third ends 103 of the two three-way adapters 1 in a one-to-one correspondence, and the other end extends to the top cover of the operating machine.

[0063] This air conditioning system, by setting two air conditioning refrigerant filling structures, connects the first end 101 of a three-way adapter 1 to the exhaust port 201 of the compressor 2, and the second end 102 to the refrigerant pipe 3 between the compressor 2 and the condenser. The first end 101 of the other three-way adapter 1 is connected to the air inlet 202 of the compressor 2, and the second end 102 is connected to the refrigerant pipe 3 between the compressor 2 and the evaporator, ensuring that the refrigerant in the air conditioning system can circulate normally between the compressor 2, the condenser and the evaporator. At the same time, the two filling pipes 4 are connected to the two three-way adapters 1 correspondingly, and extend to the top cover of the operating machine, so that the refrigerant filling ports 401 of the two filling pipes 4 can be easily seen when the top cover is opened. When refrigerant needs to be added, it is only necessary to open the end cover 5 on the refrigerant filling port 401, and refrigerant can be added to the refrigerant filling ports 401 of the two filling pipes 4 at the same time, so that the refrigerant entering the two sides of the compressor 2 is balanced, thereby ensuring that the pressure in the refrigerant pipe 3 is stable, and the convenience of refrigerant filling is also improved. This design optimizes the system structure and improves the convenience and efficiency of operation.

[0064] Specifically, the three-way adapter 1 can be connected to the exhaust port 201 or the air inlet 202 of the compressor 2 by fasteners, and can also be connected to the exhaust port 201 or the air inlet 202 of the compressor 2 by snap-fitting. Any existing connection method can be selected as needed. In the embodiment of the present application, no specific restrictions are imposed on the connection method between the three-way adapter 1 and the exhaust port 201 or the air inlet 202 of the compressor 2.

[0065] In one embodiment, if Figure 1 As shown, the refrigerant filling ports 401 of the two filling pipes 4 are adjacent to each other and spaced apart.

[0066] By arranging the refrigerant filling ports 401 of the two filling pipes 4 adjacent to each other, it is convenient to simultaneously fill the two refrigerant filling ports 401 with refrigerant, thereby improving the operation efficiency. The refrigerant filling ports 401 of the two filling pipes 4 are arranged at intervals, that is, an installation space is left between the two refrigerant filling ports 401, ensuring that the two refrigerant filling ports 401 can be connected to the external filling gun 9 at the same time.

[0067] Specifically, the two refrigerant filling ports 401 may be arranged at the same horizontal plane or at different horizontal planes. In the embodiment of the present application, no specific limitation is imposed on the heights of the two refrigerant filling ports 401 .

[0068] In one embodiment, if Figure 1 As shown, the inner diameters of the two filling pipes 4 are different, wherein the inner diameter of the filling pipe 4 connected to the exhaust port 201 of the compressor 2 is smaller than the inner diameter of the filling pipe 4 connected to the intake port 202 of the compressor 2 .

[0069] After the refrigerant is compressed by the compressor 2, the refrigerant in the refrigerant pipe 3 is in a high temperature and high pressure state. The pressure of the refrigerant in the refrigerant pipe 4 is ensured by designing the inner diameter of the filling pipe 4 connected to the exhaust port 201 of the compressor 2 to be thinner.

[0070] In one embodiment, in combination Figure 1 , Figure 3 and Figure 4 As shown, two filling nozzles 6 are also included. The two filling nozzles 6 are arranged in a one-to-one correspondence with the two refrigerant filling ports 401, and the end cover 5 is detachably connected to the filling nozzles 6.

[0071] By correspondingly arranging two filling nozzles 6 on the two refrigerant filling ports 401, it is possible to better adapt to the filling device, thereby improving the stability and safety of refrigerant filling and preventing accidents caused by refrigerant leakage or improper filling. The end cover 5 is detachably connected to the filling nozzle 6, so that the end cover 5 on the filling nozzle 6 can be easily removed during the refrigerant filling process. When the refrigerant filling is completed, the end cover 5 is re-covered on the filling nozzle 6, so that the refrigerant is easily sealed in the refrigerant pipe 3 and refrigerant leakage is avoided.

[0072] Specifically, the detachable connection method between the end cover 5 and the filling nozzle 6 can be a threaded connection, or it can be an existing connection method such as a snap connection. In the embodiment of the present application, no specific limitation is imposed on the detachable connection method between the end cover 5 and the filling nozzle 6.

[0073] Specifically, the connection end between the filling nozzle 6 and the refrigerant filling port 401 is configured as a stepped shaft adapted to the inner diameter of the refrigerant filling port 401 . When installing the filling nozzle 6 , it is only necessary to insert the connection end of the filling nozzle 6 into the refrigerant filling port 401 .

[0074] In one embodiment, if Figure 3 and Figure 4 As shown, a support member 7 is also included. Two slots 701 are provided on the support member 7 at positions corresponding to the two filling nozzles 6 . The two filling nozzles 6 are respectively positioned in the two slots 701 .

[0075] By installing the filling nozzle 6 in the slot 701 of the support 7, the filling nozzle 6 can be effectively fixed and stabilized, so that the distance and position between the two filling nozzles 6 are relatively fixed, avoiding shaking or displacement during the filling process, ensuring the accuracy and stability of the filling, and improving work efficiency and accuracy.

[0076] Specifically, the support member 7 can be provided in a sheet shape, a plate shape, a block shape, etc. In the embodiment of the present application, the shape of the support member 7 is not specifically limited.

[0077] Specifically, the card slot 701 can be set as an opening, or can be set as a through hole, etc. In the embodiment of the present application, the type of the card slot 701 is not specifically limited.

[0078] In one embodiment, if Figures 3 to 5 As shown, a fastening connection member 702 is also provided on the support member 7 , and the fastening connection member 702 is provided between two slots 701 . The support member 7 is installed at the installation position of the working machine through a fastener 8 .

[0079] The support member 7 is installed on the installation position of the working machine by fastening the connecting member 702, so that the support member 7 is fixed in the working machine, and then the two fuel nozzles are fixed, thereby increasing the stability and safety of the entire system and avoiding loosening or falling off during operation.

[0080] Specifically, the fastening connector 702 can be selected from existing fastening connectors such as bolts and clamps. In the embodiment of the present application, the type of the fastening connector 702 is not specifically limited.

[0081] Specifically, combined Figure 1 and Figure 5 As shown, the two filling nozzles 6 can be filled through the filling gun 9, and the filling gun 9 is provided with two adaptive filling holes 901 corresponding to the two filling nozzles 6. The filling gun 9 is provided with a pressure sensor 902, and the pressure sensor 902 is electrically connected to the controller. The pressure sensor 902 is used to detect the pressure in the air-conditioning system and transmit the detection data to the controller. The controller controls the filling gun 9 to continue filling or stop filling according to the detection data.

[0082] The principle of adding refrigerant to the air conditioning system in this embodiment is described as follows:

[0083] Open the top cover of the operating machine, remove the end caps 5 on the two filling nozzles 6, and correspondingly set the two filling holes 901 on the filling gun 9 on the two filling nozzles 6. The filling gun 9 simultaneously fills the two filling nozzles 6 with refrigerant, and the refrigerant enters the filling pipe 4 and the three-way adapter 1 from the filling nozzle 6, and enters the air conditioning system from the three-way adapter 1. When the pressure sensor 902 in the filling gun 9 detects that the pressure in the air conditioning system reaches a preset value, the controller controls the filling gun 9 to stop filling according to the detection data of the pressure sensor 902, removes the filling gun 9, and sets the two end caps 5 sealing covers on the two filling nozzles 6.

[0084] According to an embodiment of the present utility model, on the other hand, a working machine is provided, including a top cover and an air conditioning system.

[0085] Specifically, the refrigerant filling port 401 of the filling pipe 4 extends to the top cover.

[0086] This operating machine is connected to two three-way adapters 1 via two filling pipes 4, and extends to the top cover of the operating machine, so that the refrigerant filling ports 401 of the two filling pipes 4 can be easily seen when the top cover is opened, thereby improving the convenience and efficiency of refrigerant filling.

[0087] It should be noted that the operating machinery includes but is not limited to excavators, cranes, pile drivers, mixers, etc. In the embodiments of the present application, no specific restrictions are imposed on the types of operating machinery.

[0088] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An air conditioning refrigerant filling structure, characterized in that: include: A three-way adapter (1), wherein the first end (101) is suitable for communicating with the exhaust port (201) or the air inlet (202) of the compressor (2), and the second end (102) is suitable for communicating with the refrigerant pipe (3); A filling pipe (4) has one end connected to the third end (103) of the three-way adapter (1), and the other end extending to the top cover of the operating machine to form a refrigerant filling port (401), and an openable and closable end cover (5) is provided on the refrigerant filling port (401).

2. The air conditioning refrigerant filling structure according to claim 1, characterized in that: The three-way adapter (1) comprises a connector body (104), the first end (101) and the second end (102) being bent along two ends of the connector body (104), respectively, and the third end (103) being arranged on the connector body (104) between the first end (101) and the second end (102).

3. The air conditioning refrigerant filling structure according to claim 2, characterized in that: The first end (101) of the three-way adapter (1) is connected to the compressor (2) via a fastener (8).

4. An air conditioning system, comprising a compressor (2), a condenser and an evaporator connected to form a circulation loop through a refrigerant pipe (3), characterized in that: Also includes: The air conditioning refrigerant filling structure according to any one of claims 1 to 3, wherein the first end (101) of one of the three-way adapters (1) is connected to the exhaust port (201) of the compressor (2), and the second end (102) is connected to the refrigerant pipe (3) between the compressor (2) and the condenser; the first end (101) of the other three-way adapter (1) is connected to the air inlet (202) of the compressor (2), and the second end (102) is connected to the refrigerant pipe (3) between the compressor (2) and the evaporator; One end of the two filling pipes (4) is respectively connected to the third ends (103) of the two three-way adapters (1) in a one-to-one correspondence, and the other end extends to the top cover of the operating machine.

5. The air conditioning system according to claim 4, characterized in that: The refrigerant filling ports (401) of the two filling pipes (4) are arranged adjacent to each other and at intervals.

6. The air conditioning system according to claim 4, characterized in that: The inner diameters of the two filling pipes (4) are different, wherein the inner diameter of the filling pipe (4) connected to the exhaust port (201) of the compressor (2) is smaller than the inner diameter of the filling pipe (4) connected to the intake port (202) of the compressor (2).

7. The air conditioning system according to claim 4, characterized in that: It also includes two filling nozzles (6), the two filling nozzles (6) are arranged in a one-to-one correspondence with the two refrigerant filling ports (401), and the end cover (5) is detachably connected to the filling nozzles (6).

8. The air conditioning system according to claim 7, characterized in that: It also comprises a support member (7), on which two slots (701) are provided at positions corresponding to the two filling nozzles (6), and the two filling nozzles (6) are respectively positioned in the two slots (701).

9. The air conditioning system according to claim 8, characterized in that: The support member (7) is also provided with a fastening connection member (702), and the fastening connection member (702) is arranged between the two clamping grooves (701). The support member (7) is installed at the installation position of the working machine through the fastening member (8).

10. A working machine, characterized in that: include: Top cover; In the air conditioning system according to any one of claims 4 to 9, the refrigerant filling port (401) of the filling pipe (4) extends to the top cover.

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