Internal heat exchanger for automotive air conditioner

A technology for internal heat exchangers and air conditioners, applied to indirect heat exchangers, heat exchanger shells, heat exchanger types, etc., can solve problems such as not being able to ensure sufficient length

Inactive Publication Date: 2008-08-27
TGK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This causes a problem that the sleeve cannot secure a sufficient length necessary for heat exchange

Method used

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  • Internal heat exchanger for automotive air conditioner
  • Internal heat exchanger for automotive air conditioner
  • Internal heat exchanger for automotive air conditioner

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Embodiment Construction

[0014] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing preferred embodiments of the invention.

[0015] FIG. 1 is a diagram showing an installation example of an expansion valve and an internal heat exchanger according to a first embodiment of the present invention.

[0016] In the refrigeration cycle of an automobile air conditioner, a compressor, a condenser, and a receiver (all not shown) are arranged in the engine room of the vehicle, and an expansion valve 2 and an evaporator are arranged in the compartment separated from the engine room by a partition wall 1 3. In the illustrated embodiment, the expansion valve 2 is accommodated in a housing 4 mounted on the end face of the evaporator 3 in such a manner as to cover the inlet and outlet of the evaporator 3 . Inside the housing 4 the refrigerant outlet of the expansion valve 2 is connected to the inlet of the evaporator 3 . The expansion valve 2 and the e...

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Abstract

An internal heat exchanger for an automotive air conditioner which is capable of securing length of the internal heat exchanger necessary for heat exchange by a double pipe even when an evaporator and an expansion valve are disposed where the distance to a partition wall is short. Between an expansion valve and evaporator, and a partition wall, a first double pipe is disposed which is formed by surrounding an inner pipe connected to an inlet port of the expansion valve with an outer pipe connected to an outlet port of the evaporator, and a second double pipe is disposed within an engine room which is formed by surrounding an inner pipe with an outer pipe, in a manner extended from the first double pipe. The first double pipe and the second double pipe are connected by a pipe connecting member such that the connecting portions of the pipes are prevented from disconnection.

Description

technical field [0001] The present invention relates to an internal heat exchanger for an automobile air conditioner, more particularly to such an internal heat exchanger for an automobile air conditioner, which is used in the refrigeration cycle of an automobile air conditioner for Heat exchange is performed between the high-temperature refrigerant that has flowed out of the condenser and the low-temperature refrigerant that has returned to the compressor. Background technique [0002] For automobile air conditioners, it has been proposed that the refrigerant used in its refrigeration cycle should be changed from alternative freon (HFC-134a) to natural refrigerant (carbon dioxide) in consideration of environmental issues. Although a refrigeration cycle system using carbon dioxide as a refrigerant has the same basic structure, an internal heat exchanger is generally used in a refrigeration cycle using carbon dioxide in order to improve system efficiency (see, for example, Ja...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B39/00
CPCB60H1/00342B60H1/00571B60H1/3227B60H2001/00957F25B40/00F25B2500/18F28D7/106F28F9/26B60H1/32B60H1/00
Inventor 广田久寿
Owner TGK
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