Refrigerant filling connector with safety ring

Abstract

The utility model relates to a refrigerant filling connector with a safety ring, which belongs to the field of refrigeration equipment and comprises a sleeve shell and a spray head arranged on the upper top surface of the sleeve shell, and a spray head guide pipe is arranged in the spray head and communicated with a drainage pipe arranged in the sleeve shell. The inner diameter of the drainage pipe is larger than or equal to the outer diameter of a liquid outlet of the refrigerant packaging bottle, the inner diameter of the spray head guide pipe is smaller than the outer diameter of the liquid outlet of the refrigerant packaging bottle, and a safety ring is arranged on the upper end face of the sleeve shell around the spray head. The connector can be directly arranged on the spraying opening of the refrigerant pressure bottle in a sleeving mode and directly connected to the filling opening for refrigerant filling, use is convenient, filling can be completed only by aligning and pressing, the sealing performance is improved through the arrangement of the safety ring and the sealing gasket, leakage and frostbite of an operator caused by the fact that the spraying direction of the refrigerant is not fixed in the filling process are avoided, and the service life of the refrigerant pressure bottle is prolonged. The refrigerant filling device guarantees the filling effect and safety and is suitable for refrigerant filling of various vehicle types.

Description

Technical Field

[0001] The utility model relates to a refrigerant filling connector, in particular to a refrigerant filling connector with a safety ring, and belongs to the field of refrigeration equipment. Background Art

[0002] Refrigerant, also known as refrigerant medium, coolant, refrigerant, is a medium for energy conversion in refrigeration equipment such as automobiles, ships, refrigerators, and household air conditioners that require refrigeration. These substances usually increase power through reversible phase changes (such as gas-liquid phase changes), such as steam in a steam engine, refrigerant in a refrigerant, etc. When the refrigeration effect of the refrigeration equipment is poor, it is necessary to add refrigerant again.

[0003] The existing refrigerant is packaged in a pressure tank. During filling, the pressure tank containing the refrigerant needs to be abutted against the filling port of the refrigeration equipment, and the liquid outlet of the pressure tank is opened by the thimble of the filling port, and the refrigerant is injected by pressure. However, in actual use, it is difficult to conveniently connect the refrigerant bottle to the filling port. To ensure the filling effect, a manifold pressure gauge is generally used to connect the pressure tank to the filling port and a valve is used for sealing. However, this filling method requires sequential installation and connection, and the pressure value needs to be constantly monitored during the filling process, which is cumbersome and laborious and inconvenient. Summary of the Invention

[0004] In view of this, the utility model provides a refrigerant filling connector with a safety ring, which increases its sealing performance on the basis of realizing the quick connection between the refrigerant packaging bottle and the filling port.

[0005] The technical solution for the utility model to solve the above technical problems is as follows:

[0006] A refrigerant filling connector with a safety ring includes a sleeve housing and a nozzle provided on the upper top surface of the sleeve housing. The nozzle has a nozzle conduit inside, and the nozzle conduit is communicated with a drainage pipe provided inside the sleeve housing. The inner diameter of the drainage pipe is greater than or equal to the outer diameter of the liquid outlet of the refrigerant packaging bottle, and the inner diameter of the nozzle conduit is less than the outer diameter of the liquid outlet of the refrigerant packaging bottle;

[0007] A safety ring is provided around the nozzle on the upper end surface of the sleeve housing, and the inner diameter of the safety ring is greater than or equal to the outer diameter of the refrigerant filling port.

[0008] Based on the above technical solution, the utility model can be further improved as follows.

[0009] Further, the nozzle includes a nozzle housing, a nozzle conduit, and a pressure locking structure. The nozzle housing is integrally connected to the upper end surface of the sleeve housing. A pressure locking structure and a plurality of spray outlets surrounding the pressure locking structure are provided on the spray end of the nozzle housing, and the pressure locking structure is communicated with the nozzle conduit inside the nozzle housing;

[0010] Preferably, the pressure lock top structure includes a pneumatic valve locking spring valve core.

[0011] Furthermore, a sealing gasket is provided between the upper end face of the housing and the safety ring.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The connector of the present utility model can be directly sleeved on the spray outlet of the refrigerant pressure bottle and directly connected to the filling port for refrigerant filling. It is convenient to use, and only needs to be aligned and pressed to complete the filling. The setting of the safety ring and the sealing gasket increases the sealing performance, avoids the leakage caused by the unfixed spraying direction of the refrigerant during the filling process and the operator being frostbitten, ensures the filling effect and safety, and is applicable to the refrigerant filling of various vehicle models. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the refrigerant filling connector with a safety ring of the present utility model;

[0015] Figure 2 is a cross-sectional view of the structure of the refrigerant filling connector with a safety ring of the present utility model;

[0016] Figure 3 is a schematic diagram of the top structure of the refrigerant filling connector with a safety ring of the present utility model.

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] 01, housing; 11, drain pipe; 02, nozzle; 21, nozzle conduit; 22, pressure lock top structure; 23, spray outlet; 03, safety ring; 04, sealing gasket. Detailed Embodiments

[0019] The principles and features of the present utility model will be described below with reference to the drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0020] As Figures 1-3 shown, the refrigerant filling connector with a safety ring 03 includes a housing 01 and a nozzle 02 provided on the top surface of the housing 01. The nozzle 02 has a nozzle conduit 21 inside, and the nozzle conduit 21 is communicated with a drain pipe 11 provided inside the housing 01. The inner diameter of the drain pipe 11 is greater than or equal to the outer diameter of the liquid outlet of the refrigerant packaging bottle, and the inner diameter of the nozzle conduit 21 is less than the outer diameter of the liquid outlet of the refrigerant packaging bottle;

[0021] The upper end face of the housing 01 is provided with a safety ring 03 around the nozzle 02, and the inner diameter of the safety ring 03 is greater than or equal to the outer diameter of the refrigerant filling port.

[0022] In another embodiment of the present utility model, the spray head 02 includes a spray head housing, a spray head conduit 21, and a pressure locking and topping structure 22. The spray head housing is integrally connected to the upper end surface of the sleeve housing 01. A pressure locking structure and a plurality of spray outlets 23 arranged around the pressure locking and topping structure 22 are provided on the spray end of the spray head housing. The pressure locking and topping structure 22 communicates with the spray head conduit 21 inside the spray head housing.

[0023] In another embodiment of the present utility model, the pressure locking and topping structure 22 includes a gas valve type locking spring valve core. When the pressure bottle is connected to the filling port and pressed, the locking spring valve core is abutted by a thimble provided on the filling port, so that the refrigerant in the pressure bottle is quickly atomized and ejected, and the ejection amount can be adjusted by applying different pressures according to the filling situation.

[0024] In another embodiment of the present utility model, a sealing gasket 04 is further provided between the upper end surface of the sleeve housing 01 and the safety ring 03.

[0025] During use, the refrigerant filling connector with the safety ring 03 of the present utility model is sleeved on the spray outlet 23 of the refrigerant pressure bottle with a drainage tube 11, and the pressure locking and topping structure 22 is aligned with the thimble of the refrigeration equipment filling port. The pressure bottle is pressed downwards. The spray outlet 23 is ejected under the pressure of the stepped structure formed by the drainage tube 11 and the spray head conduit 21, and atomization is achieved by the pressure locking and topping structure 22. At the same time, the sealing gasket 04 abuts on the filling port, and the safety ring 03 is sleeved outside the filling port to achieve sealing. After the filling is completed, the refrigerant filling can be stopped by no longer pressing down the pressure tank.

[0026] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A refrigerant filling connector with a safety ring, characterized in that: It comprises a casing and a nozzle arranged on the top surface of the casing, wherein the nozzle has a nozzle conduit in it, the nozzle conduit is connected with a drainage pipe arranged in the casing, the inner diameter of the drainage pipe is greater than or equal to the outer diameter of the liquid outlet of the refrigerant packaging bottle, and the inner diameter of the nozzle conduit is smaller than the outer diameter of the liquid outlet of the refrigerant packaging bottle; The upper end surface of the sleeve is provided with a safety ring surrounding the nozzle, and the inner diameter of the safety ring is greater than or equal to the outer diameter of the refrigerant filling port.

2. The refrigerant filling connector with a safety ring according to claim 1, characterized in that: The nozzle includes a nozzle shell, a nozzle conduit and a pressure lock top structure. The nozzle shell is integrally connected to the upper end surface of the sleeve shell. A pressure locking structure and a plurality of ejection outlets arranged around the pressure lock top structure are arranged on the ejection end of the nozzle shell. The pressure lock top structure is connected to the nozzle conduit in the nozzle shell.

3. The refrigerant filling connector with a safety ring according to claim 2, characterized in that: The pressure locking top structure comprises an air valve type locking spring valve core.

4. The refrigerant filling connector with a safety ring according to any one of claims 1 to 3, characterized in that: A sealing gasket is also arranged between the upper end surface of the sleeve and the safety ring.

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