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Soft stainless steel tube

A stainless steel tube and stainless steel technology, applied in the direction of hoses, tubes, rigid tubes, etc., can solve problems such as weak vibration, copper tubes do not have sufficient pressure resistance characteristics for high pressure resistance, and small refrigerant pressure stress margins, etc.

Active Publication Date: 2021-05-04
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Second, the copper tube has the disadvantage of not having sufficient high-voltage withstand voltage characteristics
[0008] Third, since the copper pipe has a small stress margin to withstand the refrigerant pressure inside the pipe, it has the disadvantage of being weak against the vibration transmitted from the compressor.
[0014] However, since the strength and hardness of conventional existing stainless steel pipes are much higher than those of copper pipes, there is a disadvantage that it is not suitable for pipe expansion work or pipe bending work for pipe connection.
In particular, the piping constituting the refrigerant cycle can be arranged to bend at a specific point with a specific curvature, but in the case of using existing stainless steel pipes, there is a disadvantage that it is impossible to bend the piping

Method used

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Embodiment Construction

[0057] Hereinafter, some embodiments of the present invention will be described in detail with reference to illustrative drawings. When attaching reference numerals to constituent elements in each drawing, it should be noted that the same constituent elements are given the same reference numerals as much as possible even if they are shown in different drawings. In addition, when describing the embodiments of the present invention, when it is judged that a specific description of related known structures or functions will hinder the understanding of the embodiments of the present invention, the detailed description will be omitted.

[0058] In addition, terms such as first, second, A, B, a, b, etc. can be used when describing components of the embodiments of the present invention. However, such terms are used only to distinguish the constituent elements from other constituent elements, and the nature, order, or order, etc. of the corresponding constituent elements are not limit...

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Abstract

The soft stainless steel pipe according to the embodiment of the present invention is composed of stainless steel with an austenite matrix structure and contains a copper component. It is characterized in that it has a delta ferrite matrix structure of 1% or less based on the particle area, and has a A certain outer diameter is used to transport the refrigerant of the air conditioner. The refrigerant uses R410a and has a minimum thickness determined based on the saturation pressure of the refrigerant.

Description

technical field [0001] The present invention relates to a soft stainless steel pipe (Ductile stainless steel pipe). Background technique [0002] An air conditioner may be defined as a device that uses a phase change cycle of a refrigerant to supply warm air or cool air to a room. [0003] In detail, the phase change cycle of the refrigerant may include: a compressor, which is used to compress the low-temperature and low-pressure gas-phase refrigerant into a high-temperature and high-pressure gas-phase refrigerant; The high-temperature and high-pressure gas-phase refrigerant is phase-changed into a high-temperature and high-pressure liquid-phase refrigerant; an expansion valve is used to expand the high-temperature and high-pressure liquid-phase refrigerant passing through the condenser into a low-temperature and low-pressure two-phase refrigerant; and An evaporator that phases the low-temperature and low-pressure two-phase refrigerant passing through the expansion valve in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/14F25B41/37F25B41/42
CPCF16L11/14F25B41/31C21D6/004C21D8/105C21D9/14C21D1/26C22C38/001C22C38/02C22C38/04C22C38/40C22C38/42C22C38/44C22C38/58C21D2211/001C21D2211/005F16L9/02F16L9/17F24F1/32
Inventor 洪硕杓
Owner LG ELECTRONICS INC
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