Air conditioner, anti-detaching pipe joint and assembly

Abstract

The invention provides an anti-detaching pipe joint and an assembly. The anti-detaching pipe joint assembly comprises the anti-detaching pipe joint and a pipe connecting nut, wherein the anti-detaching pipe joint comprises an independent pipe joint body and an auxiliary nut; the two ends of the pipe joint body are provided with screw threads; the screw thread at one end is matched with the screw thread of the auxiliary nut; the screw thread at the other end is matched with the screw thread of the pipe connecting nut; the middle of the pipe joint body is further provided with a non-threaded segment; the non-threaded segment is provided with a groove; first wedged teeth are arranged in the groove; and the corresponding end face of the auxiliary nut is provided with second wedged teeth which are meshed with the first wedged teeth. The invention further provides an air conditioner. An evaporator and a connecting pipe of the air conditioner are connected with each other through the anti-detaching pipe joint assembly. Due to the adoption of the anti-detaching pipe joint and the assembly, anti-detaching pipe connecting connection can be realized truly, the problem of cold medium leakage caused by detachment of the conventional pipe joint and pipe connecting nut is solved, and the connection between the joint and the nut is firmer; the after-sales installation and maintenance costs are reduced, and the application range of a combustible refrigerant is expanded; and the anti-detaching pipe joint is easy to install, is simple in structure, and is convenient to process.

Description

[0001] 【Technical field】 [0002] The invention relates to a pipe connection structure, in particular to an anti-disassembly pipe joint applied to an air conditioner. [0003] 【Background technique】 [0004] At present, pipe joints and union nuts are used to connect the evaporator and the connecting pipe inside the room of the split-type air conditioner with common working fluid. However, detachable joints are not allowed on the indoor side of the air conditioner that uses flammable refrigerants. In the existing design, the evaporator and connecting pipes are directly welded on the indoor side and the quick connector is used on the outdoor side when the split unit is developed. It can meet the requirements of standards and safety, but there are still several problems: 1. The cost of quick connector components is high, so that the cost advantage of the product is not obvious; 2. After-sales installation is limited by the connecting pipe, and the scope of use of the product i...

AI Technical Summary

Problems solved by technology

However, detachable joints are not allowed on the indoor side of the air conditioner that uses flammable refrigerants. In the existing design, the evaporator and connecting pipes are directly welded on the indoor side and the quick connector is used on the outdoor side when the split unit is developed. It can meet the requirements of standards and safety, but there are still several problems: 1. The cost of quick connector components is high, so that the cost advantage of the product is not obvious; 2. After-sales installation is limited by the connecting pipe, and the scope of use of the product is further reduced

Existing pipe joints are generally one-piece pipe joints, which are mainly composed of two parts: a threaded section and a prism surface section. When a clockwise torque is applied to the prism surface section, the thread section and the prism surface section rotate together to closely cooperate with the union nut. ; However, when a counterclockwise torque is applied to the prism surface section, it also drives the threaded section to rotate together, so the cooperation with the union nut will be loosened, so there is a possibility of detachment, which cannot meet the requirements of using flammable refrigerants. Detachable joints are not allowed on the inside of the air conditioner. The connection between the pipe joint and the union nut is loose, which will cause refrigerant leakage and fail to meet the assembly standards and safety requirements.

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