Refrigerant filling device

Abstract

The utility model discloses a refrigerant filling device, comprising: a filling body, the filling body having a main board, one end of the main board in the length direction is connected with a low-pressure filling pipe and a high-pressure filling pipe, the other end of the main board in the length direction is connected with a filling pipe and a vacuum pipe, a vacuum channel and a filling channel are arranged in the main board, a communication channel is arranged between the vacuum channel and the filling channel to achieve communication, a vacuum solenoid valve is arranged between the low-pressure filling pipe and the vacuum channel to achieve on-off, a communication solenoid valve is arranged between the vacuum channel and the communication channel to achieve on-off, one end of the filling channel is connected with the high-pressure pipe, and the other end of the filling channel is achieved through the filling solenoid valve, a control button is arranged on the filling body, the control button is electrically connected with the vacuum solenoid valve, the communication solenoid valve and the filling solenoid valve, and is controlled, and the problems of easy failure of the sealing of the filling device, excessive weight and safety risks in the filling process in the prior art are solved through long-term actual verification in the final assembly production line.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, and in particular relates to a refrigerant filling device. Background Art

[0002] The newly produced automobile air conditioning system has two plug-in interfaces, which correspond to the high-pressure interface and low-pressure interface of the automobile air conditioning system respectively. Before filling the automobile air conditioning system with refrigerant, the air in the entire air conditioning system needs to be connected through the refrigerant filling gun, and the air is extracted by the vacuum filling machine, and then a certain mass of pure liquid refrigerant is filled into the air conditioning system through the refrigerant filling gun. When filling the refrigerant, it is necessary to fill it from the high-pressure interface of the automobile air conditioning system. Due to the characteristics of the refrigerant, the boiling point is -26.2℃, so if leakage occurs during use, it will cause frostbite, and there are requirements for the sealing material of the components during use, otherwise there will be a risk of sealing failure and leakage. The filling devices in the existing technology are mostly assembled structures, which makes the sealing structure prone to sealing failure and the overall weight is too heavy and difficult to operate. Utility Model Content

[0003] The utility model aims to provide a refrigerant filling device to solve the technical problems of the filling device in the prior art that the sealing is easily invalidated and the weight is too heavy.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A refrigerant filling device comprises: a filling body, the filling body having a main board, one end of the main board in the length direction is connected to a low-pressure filling pipe and a high-pressure filling pipe, the other end of the main board in the length direction is connected to a filling pipe and a vacuum pipe, the main board has a vacuum channel and a filling channel, a communication channel is provided between the vacuum channel and the filling channel to achieve communication, a vacuum solenoid valve is provided between the low-pressure filling pipe and the vacuum channel to achieve on-off, a communication solenoid valve is provided between the vacuum channel and the communication channel to achieve on-off, one end of the filling channel is connected to the high-pressure pipe, and the other end of the filling channel is achieved through the filling solenoid valve, a control button is provided on the filling body, the control button is electrically connected to the vacuum solenoid valve, the communication solenoid valve and the filling solenoid valve, and is controlled.

[0006] The utility model provides a refrigerant filling device, wherein the main board is a metal integral structure, and the vacuum channel, the filling channel and the communication channel are integrally formed through mechanical processing.

[0007] The utility model discloses a refrigerant filling device, wherein the top surface of the mainboard and the positions of the vacuum solenoid valve, the communication solenoid valve and the filling solenoid valve are respectively processed with a vacuum solenoid valve installation port, a communication solenoid valve installation port and a filling solenoid valve installation port.

[0008] The utility model discloses a refrigerant filling device. The two sides of the mainboard in the length direction are respectively processed with a low-pressure pipe interface, a high-pressure pipe interface, a filling pipe interface and a vacuum pipe interface.

[0009] The utility model discloses a refrigerant filling device. Side plates are installed on both sides of the main board in the length direction. A shell is arranged in the upper space of the main board. The side plates, the main board and the shell form a closed space.

[0010] The utility model provides a refrigerant filling device, wherein an operating handle is arranged on a side of the side plate away from the low-pressure filling pipe.

[0011] The utility model provides a refrigerant filling device, wherein the operating handle is of a hollow structure, and the filling pipe and the vacuum pipe pass through the operating handle.

[0012] The utility model discloses a refrigerant filling device, wherein a hanging ring is arranged on a side plate opposite to the operating handle.

[0013] The utility model provides a refrigerant filling device, wherein the main board is made of stainless steel, and the side plates and the shell are made of aluminum alloy.

[0014] The beneficial effects of the utility model are as follows: a refrigerant filling device is proposed, which can withstand high pressure through the channel structure integrally formed on the main board, and the vacuum channel and the fluid channel are independent through the design of three valves, so as to prevent fluid cross-linking from affecting the use of the vacuum filling machine; the solenoid valve structure is used to reduce the valve body seals and avoid refrigerant leakage caused by seal mismatch; the shell and auxiliary connecting parts are made of aluminum alloy material, the product body is light in weight, and is more suitable for long-term repeated operations on the automobile assembly line, and the operator will not experience too much operating fatigue; the control button is integrated on the shell for easy operation, and the metal material can also prevent falling and deformation; the pull ring is set, so it is convenient to hang on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0016] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0017] Figure 2 This is a diagram showing one side of the handle of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of an embodiment of the utility model with the housing removed;

[0019] Figure 4 This is a diagram of the mainboard connection structure of an embodiment of the utility model;

[0020] Figure 5It is a perspective view of the interior of the mainboard of the embodiment of the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme 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 of the embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] like Figure 1-5 As shown, a refrigerant filling device comprises: a filling body 1, the filling body 1 has a main board 11, one end of the main board 11 in the length direction is connected to a low-pressure filling pipe 2 and a high-pressure filling pipe 3, the other end of the main board 11 in the length direction is connected to a filling pipe and a vacuum pipe, the main board 11 has a vacuum channel 111 and a filling channel 112, a communication channel 113 is provided between the vacuum channel 111 and the filling channel 112 to achieve communication, a vacuum solenoid valve 7 is provided between the low-pressure filling pipe 2 and the vacuum channel 111 to achieve on-off, a communication solenoid valve 8 is provided between the vacuum channel 111 and the communication channel 113 to achieve on-off, one end of the filling channel 112 is communicated with the high-pressure pipe, and the other end of the filling channel 112 is connected and disconnected by a filling solenoid valve 9, and a control button 14 is provided on the filling body 1, and the control button 14 is electrically connected to the vacuum solenoid valve 7, the communication solenoid valve 8 and the filling solenoid valve 9 for control.

[0023] In a preferred embodiment of the present invention, the main board 11 is a metal integral structure, and the vacuum channel 111, the filling channel 112 and the communication channel 113 are integrally formed by mechanical processing.

[0024] In a preferred embodiment of the utility model, the top surface of the main board 11 is respectively processed with a vacuum solenoid valve installation port 114, a communication solenoid valve installation port 115 and a filling solenoid valve installation port 116 at positions corresponding to the vacuum solenoid valve 7, the communication solenoid valve 8 and the filling solenoid valve 9.

[0025] In a preferred embodiment of the utility model, a low-pressure pipe interface 117, a high-pressure pipe interface 118, a filling pipe interface 119 and a vacuum pipe interface 120 are respectively processed on both sides of the main board 11 in the length direction.

[0026] In a preferred embodiment of the utility model, side panels 12 are installed on both sides of the main board 11 in the length direction, a shell 13 is arranged in the upper space of the main board 11, and the side panels 12, the main board 11 and the shell 13 enclose a closed space.

[0027] In a preferred embodiment of the utility model, an operating handle 5 is provided on a side of the side plate 12 away from the low-pressure filling pipe 2 .

[0028] In a preferred embodiment of the utility model, the operating handle 5 is of a hollow structure, and the filling pipe and the vacuum pipe pass through the operating handle 5 .

[0029] In a preferred embodiment of the present utility model, a hanging ring 6 is provided on the side plate 12 on the side opposite to the operating handle 5 .

[0030] In a preferred embodiment of the present invention, the main board 11 is made of stainless steel, and the side panels 12 and the housing 13 are made of aluminum alloy.

[0031] Brief description of the use principle:

[0032] The filling device is designed with two connecting ports, a low-pressure filling pipe 2 and a high-pressure filling pipe 3. The ends of the low-pressure filling pipe 2 and the high-pressure filling pipe 3 are provided with quick connectors 4, which can respectively correspond to the high-pressure interface and the low-pressure interface of the automobile air-conditioning pipeline; at the same time, the other ends of the low-pressure filling pipe 2 and the high-pressure filling pipe 3 are connected to the low-pressure pipe interface 117 and the high-pressure pipe interface 118.

[0033] The filling gun uses a whole 304 stainless steel plate as the main board 11, and two channels are formed by drilling holes inside the main board 11, namely a vacuum channel and a refrigerant fluid channel;

[0034] Three solenoid valves are designed as the opening and closing valves of the channels, among which the filling solenoid valve 9 is responsible for the opening and closing of the filling channel 112, the vacuum solenoid valve 7 is responsible for the opening and closing of the vacuum channel 111, and the communication solenoid valve 8 is responsible for the communication between the vacuum channel 111 and the filling channel 112 at the stainless steel main board 11;

[0035] A start and stop control button 14 is designed on the refrigerant filling device to control the start and stop of the refrigerant vacuum filling device;

[0036] When the equipment starts working, the operator lifts the refrigerant filling device and connects the two pipeline systems of the high-pressure filling pipe 3 and the low-pressure filling pipe 2 in front of the refrigerant filling device to the high-pressure and low-pressure interfaces of the automobile air conditioning system;

[0037] After docking, press the control button 14 on the refrigerant filling device. At this time, the vacuum solenoid valve 7 and the communication solenoid valve 8 are opened, the filling solenoid valve 9 is closed, the vacuum pipe interface is connected to the vacuum pipe, and the high and low pressure interfaces of the automobile air conditioning pipeline are vacuumed at the same time to quickly remove the air inside;

[0038] After reaching the set vacuum degree, the vacuum solenoid valve 7 and the communication solenoid valve 8 are closed, the filling solenoid valve 9 is opened, and the vacuum filling machine fills the high-pressure liquid refrigerant into the high-pressure interface end of the vehicle through the filling channel 112 via the filling pipe. After the filling is completed, the filling solenoid valve 9 is closed, and the entire vacuum filling is completed;

[0039] The operator presses the stop button of the control button 14 on the refrigerant filling device, and the entire filling machine system stops working;

[0040] The operator removes the piping system in front of the refrigerant filling gun from the high and low pressure interfaces of the vehicle, and then places the refrigerant filling device to the designated position, and the equipment process cycle is completed.

[0041] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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, 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 cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present utility model, 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 the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A refrigerant filling device, characterized in that: include: A filling body (1), the filling body (1) comprising a main board (11), one end of the main board (11) being connected to a low-pressure filling pipe (2) and a high-pressure filling pipe (3) in the length direction, the other end of the main board (11) being connected to a filling pipe and a vacuum pipe, the main board (11) comprising a vacuum channel (111) and a filling channel (112), a communication channel (113) being provided between the vacuum channel (111) and the filling channel (112) to achieve communication, the low-pressure filling pipe (2) and the vacuum channel (11 1), a vacuum solenoid valve (7) is arranged between the vacuum channel (111) and the communication channel (113) to realize on-off, a communication solenoid valve (8) is arranged between the vacuum channel (111) and the communication channel (113) to realize on-off, one end of the filling channel (112) is connected to the high-pressure pipe, and the other end of the filling channel (112) is opened and closed by the filling solenoid valve (9), and a control button (14) is arranged on the filling body (1), and the control button (14) is electrically connected to the vacuum solenoid valve (7), the communication solenoid valve (8) and the filling solenoid valve (9) to realize control.

2. A refrigerant filling device according to claim 1, characterized in that: The main board (11) is a metal integral structure, and the vacuum channel (111), the filling channel (112) and the communication channel (113) are integrally formed by mechanical processing.

3. A refrigerant filling device according to claim 2, characterized in that: The top surface of the main board (11) is processed with a vacuum solenoid valve installation port (114), a communication solenoid valve installation port (115) and a filling solenoid valve installation port (116) at locations corresponding to the positions of the vacuum solenoid valve (7), the communication solenoid valve (8) and the filling solenoid valve (9), respectively.

4. A refrigerant filling device according to claim 3, characterized in that: A low-pressure pipe interface (117), a high-pressure pipe interface (118), a filling pipe interface (119) and a vacuum pipe interface (120) are respectively processed on both sides of the main board (11) in the length direction.

5. A refrigerant filling device according to claim 4, characterized in that: Side panels (12) are installed on both sides of the main board (11) in the length direction, a shell (13) is provided in the upper space of the main board (11), and the side panels (12), the main board (11) and the shell (13) form a closed space.

6. A refrigerant filling device according to claim 5, characterized in that: An operating handle (5) is provided on a side of the side plate (12) away from the low-pressure filling pipe (2).

7. A refrigerant filling device according to claim 6, characterized in that: The operating handle (5) is of a hollow structure, and the filling pipe and the vacuum pipe extend out of the operating handle (5).

8. A refrigerant filling device according to claim 7, characterized in that: A hanging ring (6) is provided on the side plate (12) opposite to the operating handle (5).

9. A refrigerant filling device according to claim 5, characterized in that: The main board (11) is made of stainless steel, and the side panels (12) and the housing (13) are made of aluminum alloy.

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