Unlock instant, AI-driven research and patent intelligence for your innovation.

Heat exchanger and refrigeration cycle device

A heat exchanger, refrigeration cycle technology, applied in heat exchange equipment, heat exchange materials, heating and refrigeration combinations, etc., can solve problems such as refrigerant disproportionation reaction

Active Publication Date: 2021-05-25
FUJITSU GENERAL LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rise in pressure and temperature may cause the disproportionation reaction of HFO1123 refrigerant

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat exchanger and refrigeration cycle device
  • Heat exchanger and refrigeration cycle device
  • Heat exchanger and refrigeration cycle device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown schematically in order to simplify the drawings.

[0017] Hereinafter, embodiments of the heat exchanger disclosed in the present invention will be described in detail based on the drawings. In addition, the following embodiment does not limit the heat exchanger disclosed by this invention.

[0018] The structure of the refrigeration cycle device

[0019] figure 1 The refrigerant circuit of the refrigeration cycle apparatus of this embodiment is shown. The refrigeration cycle device 1 is suitable for an air conditioning device that cools and heats a room. Such as figure 1 As shown, the refrigeration cycle apparatus 1 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The heat exchanger of the present invention has a heat pipe through which the refrigerant flows and a spiral groove formed on the inner peripheral surface of the heat pipe, and the height of the inner wall of the groove in the radial direction of the heat pipe is 0.1 [mm ] above, in the length of the soaked periphery of the heat transfer tube as S, the tube axial direction and the longitudinal direction of the groove on the cross section of the heat transfer tube parallel to the tube axis of the heat transfer tube The formed inclination angle is set as θ, and when the length of the heat pipe is set as L, the inclination angle θ is an acute angle, and the wetting area of ​​the heat pipe S×L / cosθ satisfies: S×L / cosθ≥0.5 [m 2 ].

Description

technical field [0001] The invention relates to a heat exchanger and a refrigeration cycle device. Background technique [0002] The refrigeration cycle device includes a compressor, a condenser, an expansion valve (pressure reducer), and an evaporator, and circulates the refrigerant in a closed refrigerant circuit. As the refrigerant, R410A refrigerant which is a hydrofluorocarbon (HFC) is widely used. However, the R410A refrigerant has a large global warming potential (GWP: Global Warming Potential). Therefore, in the known related art, as a refrigerant having a small GWP, a hydrofluoroolefin (HFO) 1123 refrigerant, and a mixed refrigerant containing the HFO 1123 refrigerant are used. [0003] In addition, technology in this field is disclosed in, for example, International Publication No. 2012 / 157764. [0004] However, HFO1123 refrigerant has the property of causing a disproportionation reaction represented by the following chemical reaction formula under predetermined...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B29/00F25B41/30
CPCF25B13/00F25B29/003F25B41/30F28F13/187C09K5/045F28F1/40F24F1/14F24F1/26F25B9/002F25B39/04F28D7/082F28F2210/06
Inventor 板仓俊二堀口贤藤利行岛田宗太船田和也小峰健治田中顺也
Owner FUJITSU GENERAL LTD