CN216011356U - Quick anti-return joint of vehicle air conditioner refrigerant filling - Google Patents
Quick anti-return joint of vehicle air conditioner refrigerant filling Download PDFInfo
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- CN216011356U CN216011356U CN202122436618.0U CN202122436618U CN216011356U CN 216011356 U CN216011356 U CN 216011356U CN 202122436618 U CN202122436618 U CN 202122436618U CN 216011356 U CN216011356 U CN 216011356U
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- air conditioner
- pipe part
- refrigerant
- valve body
- refrigerant filling
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Abstract
The utility model discloses a quick anti-return joint of vehicle air conditioner refrigerant filling, including the valve body, the upper end of valve body is equipped with the main link that advances, and the lower extreme is equipped with the output, and the outside of output is rotated and is installed the spiro union cap, and the side of valve body is equipped with the vice link that advances of perpendicular to valve body axis direction, all is equipped with the valve inside in main link and the vice link that advances, has reached filling convenience, easy operation, the effect that reduces the refrigerant and reveal, prevent the refrigerant backward flow.
Description
Technical Field
The utility model relates to an air conditioner refrigerant filling instrument field especially relates to a quick backflow prevention joint of vehicle air conditioner refrigerant filling.
Background
At present, two main types of automobile air-conditioning refrigerants (also called refrigerants) are provided, one type is R12, the other type is 134a (HFC-134 a), R12 has long history and is widely used, but chlorine molecules contained in the gas destroy the ozone layer in the atmosphere to cause greenhouse effect, so that countries in the world represent gathering Montreal for years have agreed with the protocol, and the production and use of Freon products are regulated to stop in recent years, wherein R12 is the first time. 134a is a variety used in the beginning of the nineties, because the chlorine-free molecules do not damage the ozone layer, the modification of the automobile air-conditioning system is less, the automobile air-conditioning system is recommended to be used by the relevant organizations in united nations, and the automobile air-conditioning system is called as 'environment-friendly snow race' in Guangdong province and other places, and the air-conditioning systems of new vehicles at home and abroad currently use 134a refrigerant.
For the vehicle type which already adopts a 134a air conditioning system, most of filling ports of high-pressure and low-pressure pipelines of the vehicle air conditioner adopt a valve core filling port form at present, and in daily use, the condition that the air conditioner does not refrigerate, namely, the refrigerant is insufficient is often met, and the refrigerant needs to be filled at the moment. When the refrigerant fills and annotates at present, will weld the filling opening and refrigerant jar, vacuum pump, manometer etc. on the system and couple together through coupling hose, form and fill and annotate the passageway. Because the pressure of the high-pressure refrigerant tank can reach dozens of atmospheric pressures, the refrigerant is inevitably leaked to cause waste even if the manipulation is skillful in the process of connecting the connecting hose and the filling port; and when the filling is finished, if the refrigerant tank is not evacuated in time, the refrigerant can be caused to flow back, and unnecessary troubles are brought.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide a quick backflow prevention joint of vehicle air conditioner refrigerant filling to reach the filling convenience, easy operation, reduce the refrigerant and reveal, prevent the purpose of refrigerant backward flow.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a quick anti-return joint of vehicle air conditioner refrigerant filling, includes the valve body, the upper end of valve body is equipped with main link that advances, and the lower extreme is equipped with the outlet end, the outside of outlet end is rotated and is installed the spiro union cap, the side of valve body is equipped with the vice link that advances of perpendicular to valve body axis direction, main link and the vice link that advances of advancing all are equipped with the valve inside in advancing.
As a specific aspect of the present invention, it may be preferable that: the outlet end comprises an upper pipe part and a lower pipe part from top to bottom, a through hole for the upper pipe part to pass through is formed in the screw joint cap, the diameter of the through hole is the same as that of the upper pipe part, and the outer diameter of the lower pipe part is larger than that of the upper pipe part.
As a specific aspect of the present invention, it may be preferable that: the internal diameter of lower tube portion is greater than the internal diameter of upper tube portion for the top of lower tube portion forms the step, be equipped with downwardly extending's annular flange on the step, the bottom of annular flange is equipped with the briquetting, the lower extreme of briquetting is planar and with the lower extreme parallel and level of lower tube portion.
As a specific aspect of the present invention, it may be preferable that: an annular groove is formed between the annular flange and the inner wall of the lower pipe part, an annular sealing ring is arranged in the annular groove, and the lower end of the annular sealing ring is flush with the lower end of the lower pipe part.
As a specific aspect of the present invention, it may be preferable that: the annular sealing ring comprises a chamfer part positioned at the lower end, and the inner diameter of the chamfer part is gradually reduced from bottom to top.
As a specific aspect of the present invention, it may be preferable that: the auxiliary inlet connecting end is provided with a blocking cap, and the outer end of the blocking cap is provided with a valve core pull opening.
The utility model discloses technical effect mainly embodies in following aspect: the main inlet connecting end is used for connecting refrigerant equipment, the refrigerant equipment comprises a refrigerant tank, a refrigerant machine and the like, the outlet end is used for connecting a refrigerant filling port of a vehicle air conditioner, a screw cap can be matched with the external thread of the filling port so as to firmly align the outlet end with the filling port, and the auxiliary inlet connecting end is used for connecting a pressure gauge; refrigerant equipment passes through the main link of advancing, then will cool if pour into the filler in the play end, and the manometer of vice link of advancing simultaneously can observe the pressure condition constantly, and the valve inside of main link of advancing and vice link of advancing can prevent that the play end from taking place to leak when connecting vehicle air conditioner refrigerant filler, has reached convenient, the easy operation of filling, reduces the refrigerant and reveals, prevents the effect of refrigerant backward flow.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic sectional view of the outlet end of the present invention;
fig. 3 is a schematic view of the three-dimensional structure of the outlet of the present invention.
Reference numerals: 1. a valve body; 2. a main inlet connecting end; 3. outputting; 31. an upper pipe portion; 32. a lower pipe portion; 4. a screw cap; 5. a secondary inlet connecting end; 6. a valve core; 7. a through hole; 8. a step; 9. an annular flange; 10. briquetting; 11. an annular groove; 12. an annular seal ring; 121. chamfering the corner; 13. a plugging cap; 14. the valve core is pulled open.
Detailed Description
The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical solutions of the present invention can be more easily understood and grasped, and cannot be construed as limiting the present invention.
Examples
The utility model provides a quick anti-return joint of vehicle air conditioner refrigerant filling, it is shown with reference to figure 1, the utility model discloses a quick anti-return joint of vehicle air conditioner refrigerant filling, including valve body 1, the upper end of valve body 1 is equipped with the owner and advances link 2, and the lower extreme is equipped with outlet end 3, and the outside of outlet end 3 is rotated and is installed screw cap 4, and the side of valve body 1 is equipped with the vice link 5 that advances of 1 axis direction of perpendicular to valve body, and the owner all is equipped with valve inside 6 in advancing link 2 and the vice link 5 that advances.
When the device is used, the main inlet connecting end 2 is used for connecting refrigerant equipment, the refrigerant equipment comprises a refrigerant tank, a refrigerant machine and the like, the outlet end 3 is used for connecting a refrigerant filling port of a vehicle air conditioner, the screw cap 4 can be matched with the external thread of the filling port, the outlet end 3 is further firmly aligned with the filling port, and the auxiliary inlet connecting end 5 is used for connecting a pressure gauge; the refrigerant equipment passes through the main inlet connecting end 2, then injects the refrigerant into the filling port at the outlet end 3, meanwhile, the pressure condition can be observed constantly by the pressure gauge of the auxiliary inlet connecting end 5, and the leakage of the refrigerant can be prevented when the outlet end 3 is connected with the refrigerant filling port of the vehicle air conditioner by the valve inside 6 in the main inlet connecting end 2 and the auxiliary inlet connecting end 5. The utility model discloses simple structure, convenient operation does not receive space and personnel proficiency influence, effectively avoids the refrigerant to reveal and causes personnel frostbite.
Referring to fig. 2, the outlet 3 includes an upper pipe portion 31 and a lower pipe portion 32 from top to bottom, the screw cap 4 is provided with a through hole 7 through which the upper pipe portion 31 passes and having the same diameter as the upper pipe portion 31, and the lower pipe portion 32 has an outer diameter larger than that of the upper pipe portion 31. The outlet end 3 is arranged at the lower end of the valve body 1 in a welding mode, during installation, the screw cap 4 is firstly sleeved outside the upper pipe part 31 and then welded on, as the outer diameters of the through hole 7 on the screw cap 4 and the upper pipe part 31 are generally large, and the outer diameter of the lower pipe part 32 is larger than that of the upper pipe part 31, the screw cap 4 cannot fall off, and the outlet end 3 can be matched with the filling port more closely by matching with the external thread of the filling port.
Referring to fig. 2 and 3, the inner diameter of the lower pipe portion 32 is larger than that of the upper pipe portion 31, so that the top of the lower pipe portion 32 forms a step 8, an annular flange 9 extending downward is provided on the step 8, a pressing block 10 is provided at the bottom of the annular flange 9, and the lower end of the pressing block 10 is planar and flush with the lower end of the lower pipe portion 32. The pressing block 10 can play a role in opening a valve inside in a refrigerant filling port of an air conditioner of a vehicle, the annular flange 9 provides a good setting position for the pressing block 10, the lower pipe part 32 cannot be blocked, after the pressing block 10 is arranged, when the screw cap 4 is matched with the external thread of the filling port, the pressing block 10 can open the valve inside in the filling port in a proper manner, at the moment, refrigerant filling can be carried out, after the refrigerant is filled for a period of time, the refrigerant can be observed through a pressure gauge connected with the auxiliary inlet connecting end 5 until filling is finished, only the screw cap 4 needs to be screwed down, after the screw cap 4 is screwed down, the pressing block 10 loosens the valve inside in the filling port in a proper manner, and leakage and backflow of the refrigerant are avoided.
An annular groove 11 is formed between the annular flange 9 and the inner wall of the lower pipe part 32, an annular sealing ring 12 is arranged in the annular groove 11, and the lower end of the annular sealing ring 12 is flush with the lower end of the lower pipe part 32. The annular sealing ring 12 can improve the sealing performance between the lower pipe part 32 and a refrigerant filling opening of a vehicle air conditioner, and can effectively reduce leakage of refrigerant.
The annular seal ring 12 includes a chamfered portion 121 at a lower end, and an inner diameter of the chamfered portion 121 gradually decreases from bottom to top. When the screw cap 4 is matched with the external thread of the filling opening, along with the gradual screwing of the screw cap 4, the annular sealing ring 12 is more closely attached to the filling opening, the design can ensure that the annular sealing ring 12 is more closely attached to the filling opening, the pressing of the pressing block 10 is not influenced, the attaching degree of the filling opening can be increased, and the sealing property between the lower pipe part 32 and the refrigerant filling opening of the vehicle air conditioner is further improved.
The auxiliary inlet connecting end 5 is provided with a blocking cap 13, and the outer end of the blocking cap 13 is provided with a valve core wrench opening 14. When the auxiliary inlet connecting end 5 is not used, the blocking cap 13 can be screwed up, the auxiliary inlet connecting end 5 is guaranteed not to leak air, the valve core wrench opening 14 is formed in the outer end of the blocking cap 13, the blocking cap 13 can have the function of a valve core 6 wrench, tightness of the valve core 6 at any place can be adjusted, and the valve core is humanized.
Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.
Claims (6)
1. The utility model provides a quick anti-return joint of vehicle air conditioner refrigerant filling, includes the valve body, characterized by, the upper end of valve body is equipped with main link that advances, and the lower extreme is equipped with the outlet end, the outside of outlet end is rotated and is installed the spiro union cap, the side of valve body is equipped with the vice link that advances of perpendicular to valve body axis direction, all be equipped with the valve inside in main link and the vice link that advances.
2. The refrigerant filling quick backflow-preventing joint of the automobile air conditioner as claimed in claim 1, wherein: the outlet end comprises an upper pipe part and a lower pipe part from top to bottom, a through hole for the upper pipe part to pass through is formed in the screw joint cap, the diameter of the through hole is the same as that of the upper pipe part, and the outer diameter of the lower pipe part is larger than that of the upper pipe part.
3. The refrigerant filling quick backflow prevention joint of an automobile air conditioner as claimed in claim 2, wherein: the internal diameter of lower tube portion is greater than the internal diameter of upper tube portion for the top of lower tube portion forms the step, be equipped with downwardly extending's annular flange on the step, the bottom of annular flange is equipped with the briquetting, the lower extreme of briquetting is planar and with the lower extreme parallel and level of lower tube portion.
4. The refrigerant filling quick backflow prevention joint of an automobile air conditioner as claimed in claim 3, wherein: an annular groove is formed between the annular flange and the inner wall of the lower pipe part, an annular sealing ring is arranged in the annular groove, and the lower end of the annular sealing ring is flush with the lower end of the lower pipe part.
5. The quick backflow-preventing joint for refrigerant filling of an automobile air conditioner as claimed in claim 4, wherein: the annular sealing ring comprises a chamfer part positioned at the lower end, and the inner diameter of the chamfer part is gradually reduced from bottom to top.
6. The refrigerant filling quick backflow-preventing joint of the automobile air conditioner as claimed in claim 1, wherein: the auxiliary inlet connecting end is provided with a blocking cap, and the outer end of the blocking cap is provided with a valve core pull opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122436618.0U CN216011356U (en) | 2021-10-09 | 2021-10-09 | Quick anti-return joint of vehicle air conditioner refrigerant filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122436618.0U CN216011356U (en) | 2021-10-09 | 2021-10-09 | Quick anti-return joint of vehicle air conditioner refrigerant filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216011356U true CN216011356U (en) | 2022-03-11 |
Family
ID=80583423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122436618.0U Active CN216011356U (en) | 2021-10-09 | 2021-10-09 | Quick anti-return joint of vehicle air conditioner refrigerant filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216011356U (en) |
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2021
- 2021-10-09 CN CN202122436618.0U patent/CN216011356U/en active Active
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