CN217058052U

CN217058052U - Refrigerant filling gun and refrigerant filling machine

Info

Publication number: CN217058052U
Application number: CN202220508719.6U
Authority: CN
Inventors: 刘汉平; 刘庆; 邓雄章
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-07-26
Anticipated expiration: 2032-03-09

Abstract

The utility model provides a refrigerant filling gun and refrigerant filling machine. The refrigerant filling gun is applied to filling of a refrigerant of an automobile air conditioner, the automobile air conditioner comprises a refrigerant cavity, and the refrigerant filling gun comprises a joint assembly, a four-way connector, a vacuum valve and a filling valve. The joint assembly is connected to the refrigerant cavity; the four-way connector comprises a four-way air outlet end, a four-way air inlet end and a four-way joint connecting end, and one end of the joint assembly, which is far away from the refrigerant cavity, is connected to the four-way joint connecting end; the vacuum valve is connected to the four-way air outlet end; the filling valve is connected to the four-way air inlet end. The refrigerant filling gun comprises the vacuum valve and the filling valve, the complexity is reduced by reducing the arrangement of the suck-back valve, the volume and the weight of the refrigerant filling gun are reduced to the maximum extent, and the reliability is improved.

Description

Refrigerant filling gun and refrigerant filling machine

Technical Field

The utility model relates to a refrigerant filling equipment technical field, in particular to refrigerant filling rifle and refrigerant filling machine.

Background

The basic working principle of the refrigerant filling gun is as follows: the filling device is connected and sealed with an automobile air conditioner pipeline through a quick connector of a filling gun, the quick connector is connected with the air conditioner pipeline, air in the automobile air conditioner pipeline is pumped out through a vacuum valve of the filling gun by using a vacuum pump, then refrigerant stored in the device is filled into the automobile air conditioner pipeline through a filling valve, the filling valve is closed after the filling amount is reached, then residual refrigerant in the flexible hose is sucked back into the device through a back suction valve, and new circulation is restarted.

However, the refrigerant filling gun in the prior art needs the assistance of a balancer due to large volume, and can not be well popularized due to interference in some occasions.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a refrigerant filling gun, this refrigerant filling gun include vacuum valve and filling valve, through the setting that reduces the suck-back valve, have reduced the complexity, furthest's reduction the volume and the weight of refrigerant filling gun, improved the reliability.

For realizing the purpose of the utility model, the utility model adopts the following technical scheme:

according to the utility model discloses an aspect provides a refrigerant filling gun is applied to vehicle air conditioner's refrigerant filling, vehicle air conditioner includes the refrigerant chamber, refrigerant filling gun includes joint Assembly, four-way connection ware, vacuum valve and filling valve. The joint assembly is connected to the refrigerant cavity; the four-way connector comprises a four-way air outlet end, a four-way air inlet end and a four-way joint connecting end, and one end of the joint assembly, which is far away from the refrigerant cavity, is connected to the four-way joint connecting end; the vacuum valve is connected to the four-way air outlet end; the filling valve is connected to the four-way air inlet end.

According to the utility model discloses an embodiment, wherein, the joint Assembly includes that high pressure connects and low pressure connects, the cross joint link includes high pressure link and low pressure link, high pressure connect with high pressure link intercommunication, the low pressure connect with low pressure link intercommunication.

According to the utility model discloses an embodiment, wherein, the vacuum valve is gas accuse valve.

According to an embodiment of the present invention, wherein the filling valve is a solenoid valve.

According to the utility model discloses a further aspect provides a refrigerant filling machine. The refrigerant filling machine comprises the refrigerant filling gun and a filling machine main body. The filling machine main body comprises a vacuumizing pipeline, a refrigerant filling pipeline and a refrigerant recovery pipeline, wherein the vacuumizing pipeline and the refrigerant recovery pipeline are connected to one end, far away from the four-way connector, of the vacuum valve, and one end, far away from the vacuum valve, of the refrigerant recovery pipeline is communicated with one end, far away from the connector assembly, of the filling valve through the refrigerant filling pipeline.

According to the utility model discloses an embodiment, wherein, evacuation pipeline includes vacuum control valve and vacuum pump, the vacuum control valve with the vacuum pump connect gradually in the vacuum valve is kept away from the one end of joint Assembly, with will refrigerant chamber evacuation.

According to the utility model discloses an embodiment, wherein, evacuation pipeline still including connect in the vacuum control valve with vacuum detection valve and vacuum sensor between the vacuum valve to real-time detection the vacuum value in refrigerant chamber.

According to the utility model discloses an embodiment, wherein, refrigerant recovery pipeline including connect gradually in the vacuum valve is kept away from the recovery valve, the recovery pump and the accumulator of joint Assembly one end, with refrigerant in the refrigerant filling rifle is retrieved extremely in the accumulator.

According to the utility model discloses an embodiment, wherein, refrigerant filling pipeline includes the filling control valve, the one end of filling control valve connect in the accumulator, the other end connect in the filling valve is kept away from joint Assembly's one end.

According to the utility model discloses an embodiment, wherein, refrigerant filling pipeline still includes the flowmeter, the flowmeter set up in filling the control valve with between the filling valve, in order to show the refrigerant filling volume in refrigerant chamber.

The utility model provides an embodiment has following advantage or beneficial effect:

the utility model discloses a refrigerant filling gun includes vacuum valve and filling valve, through the setting that reduces the suck-back valve, use the effect that the vacuum valve compromises the suck-back valve, the complexity has been reduced, furthest's weight that has reduced refrigerant filling gun, no longer need use the equalizer helping hand, the filling valve adopts the solenoid valve, the vacuum valve adopts the gas accuse valve, make volume minimizing in the correct operating pressure scope, valve body in the structure has all adopted standardized and modular structure, the reliability has been improved.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a perspective view of a refrigerant filling gun according to an exemplary embodiment.

FIG. 2 is a schematic diagram of a refrigerant charger shown in accordance with an exemplary embodiment.

Wherein the reference numerals are as follows:

1. a joint assembly; 11. a high-pressure joint; 12. a low pressure connection; 2. a four-way connector; 21. a four-way air outlet end; 22. a four-way air inlet end; 23. a four-way joint connection end; 231. a high voltage connection end; 232. a low voltage connection terminal; 3. a vacuum valve; 4. a filling valve; 5. a filling machine main body; 51. a vacuum pumping pipeline; 511. a vacuum control valve; 512. a vacuum pump; 513. a vacuum detection valve; 514. a vacuum sensor; 52. a refrigerant charging line; 521. a filling control valve; 522. a flow meter; 53. a refrigerant recovery line; 531. a recovery valve; 532. a recovery pump; 533. an energy storage device; 6. a valve block; 7. quickly screwing a joint; 8. and filling the gun shell.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 1 to 2, fig. 1 is a perspective view of a refrigerant filling gun according to the present invention. Fig. 2 shows a schematic diagram of a refrigerant filling machine provided by the present invention.

The utility model discloses refrigerant filling rifle is applied to vehicle air conditioner's refrigerant filling, and vehicle air conditioner includes the refrigerant chamber, and refrigerant filling rifle includes joint Assembly 1, four-way connection ware 2, vacuum valve 3 and filling valve 4. The joint assembly 1 is connected to the refrigerant cavity; the four-way connector 2 comprises a four-way air outlet end 21, a four-way air inlet end 22 and a four-way connector connecting end 23, and one end of the connector assembly 1, which is far away from the refrigerant cavity, is connected to the four-way connector connecting end 23; the vacuum valve 3 is connected with the four-way air outlet end 21; the filling valve 4 is connected to the four-way inlet port 22.

The vacuum valve 3 can be opened and the filling valve 4 can be closed in the vacuumizing process, the filling valve 4 is opened and the vacuum valve 3 is closed in the filling process, the filling valve 4 is closed and the vacuum valve 3 is opened in the recycling process, meanwhile, the filling valve 4, the vacuum valve 3 and the joint component 1 are connected through the four-way connector 2, the hose and the quick-screwing joint 7, one end, far away from the four-way connector 2, of the joint component 1 is communicated with a refrigerating machine cavity of an automobile air conditioner, and the automobile air conditioner is compact, reliable and small in size.

Preferably, the refrigerant filling gun further comprises a filling gun housing 8, the filling gun housing 8 being of an approximately rectangular parallelepiped, square or other regular shape, wherein the four-way connector 2, the vacuum valve 3 and the filling valve 4 are accommodated within the filling gun housing 8.

In a preferred embodiment of the present invention, the joint assembly 1 comprises a high-pressure joint 11 and a low-pressure joint 12, the four-way joint connection end 23 comprises a high-pressure connection end 231 and a low-pressure connection end 232, the high-pressure joint 11 is communicated with the high-pressure connection end 231, and the low-pressure joint 12 is communicated with the low-pressure connection end 232.

As shown in fig. 1, the high pressure connection end 231 and the low pressure connection end 232 are arranged in parallel at the four-way connector connection end 23, so that the high pressure connector 11 and the low pressure connector 12 can be connected in parallel to the four-way connector 2, a high pressure port and a low pressure port are usually arranged in a refrigerant cavity of an automobile air conditioner, and both the high pressure connector 11 and the low pressure connector 12 can be used for vacuum pumping and filling before filling.

In a preferred embodiment of the present invention, the vacuum valve 3 is a pneumatic control valve. The filling valve 4 is an electromagnetic valve.

As shown in fig. 1, the weight of the solenoid valve is greater than that of the pneumatic control valve, but the pressure resistance of the solenoid valve is better than that of the pneumatic control valve, so that the filling valve 4 adopts the solenoid valve to meet the requirement that the filling pressure of the refrigerant is in a range of 0 to 20Bar, and the pressure in a refrigerant cavity of the automobile air conditioner after filling is about 5 to 8Bar, so that the vacuum valve 3 adopts the pneumatic control valve to meet the requirement that the pressure for vacuumizing and recycling is in a range of 0 to 10Bar, thereby reducing the volume and weight of the refrigerant filling gun to the maximum extent, avoiding the need of using a balancer for assisting power, optimizing the engineering and being capable of being popularized and applied in a large scale easily.

The utility model discloses a refrigerant filling gun includes vacuum valve 3 and filling valve 4, through the setting that reduces the suck-back valve, use vacuum valve 3 to compromise the effect of suck-back valve, the complexity has been reduced, furthest's the weight of refrigerant filling gun has reduced, no longer need use the equalizer helping hand, filling valve 4 adopts the solenoid valve, vacuum valve 3 adopts the gas accuse valve, make the volume minimizing in the correct operating pressure within range, the valve body in the structure has all adopted standardized and modular structure, the reliability is improved.

The refrigerant filling machine provided by the utility model comprises the refrigerant filling gun and a filling machine main body 5. The filling machine main body 5 comprises a vacuumizing pipeline 51, a refrigerant filling pipeline 52 and a refrigerant recovery pipeline 53, the vacuumizing pipeline 51 and the refrigerant recovery pipeline 53 are both connected to one end, away from the four-way connector 2, of the vacuum valve 3, and one end, away from the vacuum valve 3, of the refrigerant recovery pipeline 53 is communicated with one end, away from the connector assembly 1, of the filling valve 4 through the refrigerant filling pipeline 52.

As shown in fig. 2, the refrigerant filling machine fills the vehicle air conditioner with the refrigerant including three steps of evacuation, refrigerant filling and refrigerant recovery, wherein in the first step, the evacuation pipeline 51 and the vacuum valve 3 are opened, so that one end of the evacuation pipeline 51 is communicated with a refrigerator cavity of the vehicle air conditioner, and a vacuum value in the refrigerant cavity reaches a preset vacuum threshold value and is in a vacuum state; secondly, closing the vacuum valve 3 and the vacuumizing pipeline 51, opening the refrigerant filling pipeline 52 and the filling valve 4, enabling the refrigerant to enter a refrigerant cavity of the automobile air conditioner through the refrigerant filling pipeline 52 and the filling valve 4 in sequence, enabling the filling amount in the refrigerant cavity to reach the set filling amount, and then closing the refrigerant filling pipeline 52 and the filling valve 4; and thirdly, opening the refrigerant recovery pipeline 53 and the vacuum valve 3, and recovering the refrigerant through the vacuum valve 3 and the refrigerant filling pipeline 52 in sequence to finish the whole refrigerant filling process.

In a preferred embodiment of the present invention, the vacuum pumping pipeline 51 comprises a vacuum control valve 511 and a vacuum pump 512, and the vacuum control valve 511 and the vacuum pump 512 are sequentially connected to one end of the vacuum valve 3 away from the joint component 1 to pump the refrigerant cavity to vacuum.

As shown in fig. 2, the high-pressure joint 11 and/or the low-pressure joint 12 are communicated with a refrigerant cavity of an automobile air conditioner, the vacuum valve 3 is opened, the vacuum control valve 511 and the vacuum pump 512 are opened, the vehicle loop gas is extracted by the vacuum pump 512, and the vacuum extraction process is controlled by time setting and a preset vacuum threshold value.

In a preferred embodiment of the present invention, the vacuum pumping line 51 further comprises a vacuum detection valve 513 and a vacuum sensor 514 connected between the vacuum control valve 511 and the vacuum valve 3 to detect the vacuum value of the refrigerant chamber in real time.

As shown in fig. 2, the vacuum control valve 511 is closed, the vacuum sensor 514 detects the vacuum value in real time, the vacuum value needs to reach a certain limit value, for example, 5mBar/10s, within a certain time, if the vacuum value does not reach the set vacuum threshold value at the end of the timing, for example, the pressure increases too fast, the refrigerant filling machine sends an indication of equipment leakage, and the cycle must be terminated.

In a preferred embodiment of the present invention, the refrigerant recovery pipeline 53 includes a recovery valve 531, a recovery pump 532 and an energy storage 533 connected to the vacuum valve 3 in sequence at an end far away from the joint assembly 1, so as to recover the refrigerant in the refrigerant filling gun to the energy storage 533.

As shown in fig. 2, the charging valve 4 is closed, the vacuum check valve 513 is closed, the vacuum valve 3 is opened, and the refrigerant is introduced from the refrigerant recovery valve 531 into the accumulator 533 through the refrigerant recovery pump 532 and stored.

Preferably, the vacuum control valve 511 and the recovery valve 531 are provided in the same valve block 6, which is advantageous in reducing the overall volume of the refrigerant charging gun.

In a preferred embodiment of the present invention, the refrigerant filling line 52 includes a filling control valve 521, one end of the filling control valve 521 is connected to the energy storage 533, and the other end is connected to one end of the filling valve 4 far away from the joint assembly 1.

As shown in fig. 2, the vacuum valve 3 is closed, the vacuum check valve 513 is closed, the filling valve 4 is opened, and the refrigerant is filled from the accumulator 533 to the refrigerant chamber of the vehicle air conditioner through the filling control valve 521.

In a preferred embodiment of the present invention, the refrigerant filling line 52 further comprises a flow meter 522, and the flow meter 522 is disposed between the filling control valve 521 and the filling valve 4 to display the refrigerant filling amount of the refrigerant cavity.

As shown in fig. 2, the refrigerant is filled into the refrigerant cavity of the vehicle air conditioner through a filling control valve 521 via a flow meter 522, and the flow meter 522 displays the filling amount, which can be calculated by measuring the pulse and measuring the temperature numerical parameter. And stopping filling when the filling amount of the refrigerant filling pipeline 52 reaches a set amount, and sending a filling fault prompt by the refrigerant filling machine if the set amount is not reached after the filling time is over.

The utility model discloses a refrigerant filling machine includes refrigerant filling gun and filling machine main part 5. The refrigerant filling gun comprises a vacuum valve 3 and a filling valve 4, the vacuum valve 3 is used for taking the effect of the suck-back valve into consideration by reducing the arrangement of the suck-back valve, the complexity is reduced, the weight of the refrigerant filling gun is reduced to the maximum extent, a balancer is not needed for assisting, the filling valve 4 adopts an electromagnetic valve, the vacuum valve 3 adopts a pneumatic control valve, the volume is minimized within a correct working pressure range and is only 10% of the volume of the original refrigerant filling gun. All elements of the filling machine main body 5 and the refrigerant filling gun are high-quality brands and industrial standardized products, the maintenance is simple and low in frequency, the operation efficiency, the reliability and the service life are longer, the reliability is improved, the using total cost is low, the reliability is high, the cost can be greatly saved, and the cost can reach more than 50 ten thousand yuan per year.

In embodiments of the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" are used for indicating the position or the positional relationship based on the position or the positional relationship shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but not for indicating or implying that the indicated device or unit must have a specific direction, be constructed and operated in a specific position, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, the description of the terms "one embodiment," "a preferred embodiment," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A refrigerant filling gun is applied to filling of refrigerant of an automobile air conditioner, the automobile air conditioner comprises a refrigerant cavity, and the refrigerant filling gun is characterized by comprising:

a joint assembly (1), said joint assembly (1) being connected to said refrigerant chamber;

the four-way connector (2) comprises a four-way air outlet end (21), a four-way air inlet end (22) and a four-way joint connecting end (23), wherein one end, far away from the refrigerant cavity, of the joint assembly (1) is connected to the four-way joint connecting end (23);

the vacuum valve (3), the said vacuum valve (3) is connected to the said four-way outlet port (21); and

and the filling valve (4), and the filling valve (4) is connected to the four-way air inlet end (22).

2. Refrigerant filling gun according to claim 1, characterized in that the joint assembly (1) comprises a high-pressure joint (11) and a low-pressure joint (12), the four-way joint connection (23) comprising a high-pressure connection (231) and a low-pressure connection (232), the high-pressure joint (11) communicating with the high-pressure connection (231) and the low-pressure joint (12) communicating with the low-pressure connection (232).

3. Refrigerant filling gun according to claim 1, characterized in that the vacuum valve (3) is a pneumatic control valve.

4. Refrigerant filling gun according to claim 1, characterized in that the filling valve (4) is a solenoid valve.

5. A refrigerant charging machine, comprising:

the refrigerant filling gun according to any one of the preceding claims 1 to 4; and

the filling machine main body (5) comprises a vacuumizing pipeline (51), a refrigerant filling pipeline (52) and a refrigerant recovery pipeline (53), wherein the vacuumizing pipeline (51) and the refrigerant recovery pipeline (53) are connected to one end, far away from the four-way connector (2), of the vacuum valve (3), and one end, far away from the vacuum valve (3), of the refrigerant recovery pipeline (53) is communicated with one end, far away from the joint assembly (1), of the filling valve (4) through the refrigerant filling pipeline (52).

6. Refrigerant filling machine according to claim 5, characterized in that said evacuation line (51) comprises a vacuum control valve (511) and a vacuum pump (512), said vacuum control valve (511) and said vacuum pump (512) being in turn connected to the end of said vacuum valve (3) remote from said joint assembly (1) to evacuate said refrigerant chamber.

7. Refrigerant dispenser according to claim 6, characterized in that said evacuation line (51) further comprises a vacuum detection valve (513) and a vacuum sensor (514) connected between said vacuum control valve (511) and said vacuum valve (3) to detect in real time the vacuum value of said refrigerant chamber.

8. Refrigerant filling machine according to claim 5, characterized in that said refrigerant recovery line (53) comprises a recovery valve (531), a recovery pump (532) and an accumulator (533) connected in sequence to an end of said vacuum valve (3) remote from said joint assembly (1) to recover the refrigerant inside said refrigerant filling gun into said accumulator (533).

9. Refrigerant dispenser according to claim 8, characterized in that said refrigerant filling line (52) comprises a filling control valve (521), said filling control valve (521) being connected at one end to said accumulator (533) and at the other end to an end of said filling valve (4) remote from said joint assembly (1).

10. Refrigerant filling machine according to claim 9, characterized in that said refrigerant filling line (52) further comprises a flow meter (522), said flow meter (522) being arranged between said filling control valve (521) and said filling valve (4) to display the refrigerant filling quantity of said refrigerant chamber.