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

Refrigerating device inner heat exchanger

A technology for internal heat exchangers and heat exchangers, applied in the direction of heat exchanger fixation, refrigerators, heat exchange equipment, etc., can solve the problems of pressure loss on the suction side of the refrigerator, loss of efficiency of the refrigerator, and not very large pressure loss, etc. , to achieve the effect of simple separation or disassembly, simple installation, and short overall length

Inactive Publication Date: 2007-10-17
EATON FLUID POWER GMBH
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such heat exchanger tubes are less or not suitable for use in refrigerators designed to use other refrigerants
In particular such heat exchanger tubes cause a pressure loss on the suction side of the refrigerator when using CO at moderately high pressure 2 When the pressure loss is not very large
However, at lower operating pressures this loss becomes significant and causes the refrigerator to suffer a considerable loss of efficiency

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
  • Refrigerating device inner heat exchanger
  • Refrigerating device inner heat exchanger
  • Refrigerating device inner heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Figure 1 shows a refrigerator 1 that can be used, for example, in an air conditioning system of a motor vehicle or elsewhere. The refrigerator 1 comprises a compressor 2 which, in the case of a motor vehicle, is driven for example by the engine of said vehicle or even by a separate electric motor or similar. The compressor 2 comprises an outlet 3, at which compressed refrigerant is supplied, and an inlet 4, at which said compressor draws in low-pressure refrigerant. From the outlet 3 the pressure line 5 leads to a cooling device 6 in which the compressed and thus heated refrigerant is cooled and condensed. Therefore, the cooling device 6 is also called a condenser. Refrigerants that can be used are, for example, R-134a or other so-called safe refrigerants—that is to say, refrigerants that work at low pressure.

[0034] At the outlet 7 of the cooling device, the refrigerant is discharged into another pressure line 8 which leads to a high-pressure inlet 9 of a heat exch...

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 (11) has a tube (22), which has an inner lower pressure channel (25). The lower pressure channel is equipped with the connection at the side of a refrigerant compressor and has high pressure channels equipped with the connection at the pressure side of the refrigerant compressor. The lower pressure channel has a cross section in cylindrical manner. The high pressure channels are arranged around the lower pressure channel and are separated by intermediate walls, which are arranged radically to each other. The tube is manufactured in bent form having small bending radii.

Description

technical field [0001] The invention relates to a heat exchanger for a refrigerator for preheating a refrigerant supplied to a compressor of the refrigerator. Background technique [0002] Refrigerators, such as those such as those used in air-conditioning systems of motor vehicles, are often equipped with so-called internal heat exchangers. In this regard, document DE 10053000 A1 discloses a refrigerator with carbon dioxide as refrigerant. In particular, the refrigerator is designed for high operating pressures and is suitable for compressive stresses of 700 bar. The refrigerant flows into the compressor through an internal heat exchanger configured in the form of a heat exchanger tube. The refrigerant, which has been compressed by the refrigerator and cooled in the condenser, then passes again through the heat exchanger tubes in counter-flow direction to heat the carbon dioxide flowing to the compressor. The heat exchanger, constructed in the form of a heat exchanger tu...

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 Applications(China)
IPC IPC(8): F25B40/06F28D7/10F25B1/00
CPCF16L37/0982F28F2255/16F28D7/14F16L37/00F28F9/0246F25B2309/061F16L37/088F28F2275/085F25B40/02F25B40/00F28F2255/143
Inventor P·克鲁格D·布赫米勒S·韦勒
Owner EATON FLUID POWER GMBH