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Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut

A technology for connecting nuts and pipe joints, which is applied in the field of pipe joints, can solve problems such as refrigerant leakage, and achieve the effects of easy installation, convenient processing, and simple structure

Active Publication Date: 2013-12-25
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned current state of the art, the first technical problem to be solved by the present invention is to provide an anti-disassembly union nut, so as to avoid the problem of refrigerant leakage caused by the detachability of existing pipe joints and union nuts, and expand the capacity of flammable refrigerants. The application range of the agent, and the structure is simple, the processing is convenient, and the cost of after-sales installation and maintenance is reduced.

Method used

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  • Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut
  • Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut
  • Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut

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Experimental program
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Embodiment 1

[0038] Such as figure 1 As shown, the union nut 100 in this embodiment includes a mutually independent nut body 110 and a rotating part 120 for the tool to rotate, and a matching active part and a driven part are respectively arranged on the rotating part 120 and the nut body 110 .

[0039] combine figure 2 , 3 As shown, the nut body 110 is stepped, and it includes a large-diameter section 111 and a small-diameter section 112 that are sequentially connected from the first end 118 to the second end 119. Preferably, the outer peripheral surface of the large-diameter section 111 is Cylindrical, this avoids turning the nut body 110 with a tool. A first internal thread 113 matching with the pipe joint 200 is provided on the large-diameter section 111 , and the follower part is provided on the end surface of the large-diameter section 111 close to the second end 119 . Preferably, the driven part of this embodiment is one or more wedge-shaped grooves 116 (also can be wedge-shaped...

Embodiment 2

[0045] Such as Figures 6 to 8 As shown, the structure of the union nut 100 of the present embodiment is substantially the same as that of the union nut 100 of the first embodiment, the difference is that the follower part is arranged on the end surface of the large diameter section 111 close to the second end 119 One or more positioning holes 117, the active part is the same number of positioning posts 123 provided on the corresponding end surface of the rotating part 120, and the small diameter section 112 of the nut body 110 is a polished rod structure. Such as Figure 9 As shown, the positioning column 123 is inserted into the positioning hole 117, and the tightening torque is applied to the rotating part 120. The rotating part 120 drives the nut body 110 to rotate synchronously, and the first end 118 of the nut body 110 is screwed into the pipe joint 200. The nut body 110 and the pipe After the joints 200 are tightly connected, further tightening torque is applied to bre...

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PUM

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Abstract

The invention discloses a pipe connection nut which comprises a nut body and a rotating part for enabling a tool to rotate. A first end of the nut body is provided with a first internal screw thread; the rotating part and the nut body are two independent parts; the rotating part and the nut body are respectively provided with a driving part and a driven part which are matched; when a tightening torque is applied to the rotating part, the driving part and the driven part are combined to transfer the torque to the nut body; when an unscrewing torque is applied to the rotating part, the driving part is separated from the driven part; or, the driving part is combined with the driven part and when the tightening torque applied to the rotating part exceeds a certain value, the driving part or the driven part is broken. According to the pipe connection nut provided by the invention, the pipe connection nut and a pipe joint are guaranteed not to be loosened; the problem of leakage of a refrigerant, which is caused by the case that an existing pipe joint and the pipe connection nut are detachable, is avoided; and the application range of the flammable refrigerant is enlarged. Meanwhile, the invention also discloses a pipe joint assembly and an air conditioner which use the pipe connection nut, and a disassembly prevention method for the pipe connection nut.

Description

technical field [0001] The invention relates to a pipe joint, in particular to a union nut, a pipe joint assembly using the union nut, an air conditioner, and a method for preventing disassembly of the union nut. Background technique [0002] 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, the EN60335-2-40 standard requires that the indoor side of the air conditioner using flammable refrigerants is not allowed to use detachable connection structures. Although the joint scheme can meet the requirements of standards and safety, there are still several problems: [0003] 1. The cost of the quick connector assembly is nearly 400 yuan, so that the cost advantage of the product is not obvious. [0004] 2. After-sales installation is limited by the connecting pipe, and the scope of use of the product is further reduced. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L15/00F16L19/02F24F13/02
Inventor 肖庆韩鹏谢娟王武刚
Owner GREE ELECTRIC APPLIANCES INC