Controllable heat exchanger for a motor vehicle air conditioning system

A technology for heat exchangers and automotive air conditioners, which is applied to heat exchange equipment, indirect heat exchangers, heat exchanger types, etc., and can solve the problems of air conditioning equipment efficiency and adverse effects on power.
CN102767984AInactive Publication Date: 2012-11-07GM GLOBAL TECH OPERATIONS LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GM GLOBAL TECH OPERATIONS LLC
Publication Date
2012-11-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

A heat exchanger for a motor vehicle air conditioning system is provided. The heat exchanger includes an inner tube through which a heat exchanger medium can flow, an outer tube that at least regionally envelops the inner tube forming an intermediate space, and a regulating unit fluidically connected to the intermediate space. The regulating unit is configured to alter the flow resistance of the intermediate space as a function of the temperature of a heat exchanger medium that flows through the intermediate space.
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Description

technical field

[0001] The invention relates to a heat exchanger or heat exchanger for a vehicle air-conditioning system, which is designed in particular to exchange heat energy in a coolant circuit. Background technique

[0002] Air-conditioning unit built-in heat exchangers, so-called built-in heat exchangers (IHX), are known for increasing the power and efficiency of automotive air-conditioning units, which connect the section of the coolant circuit between the evaporator and the compressor with the condensing The coolant circuit section between the regulator and the pressure reducing valve is thermally coupled. The relatively cold coolant flowing from the evaporator to the compressor can in this way be used for (pre)cooling or recooling the relatively hot coolant flowing into the pressure reducing device arranged on the high-pressure side of the coolant circuit.

[0003] DE 10 2005 052 972 A1 thus describes, for example, a double-walled heat exchanger tube having an out...

Claims

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