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Refrigerating circuit for use in a motor vehicle

A technology for refrigeration circuits and motor vehicles, which is applied in the direction of refrigerators, refrigeration components, vehicle parts, etc., and can solve problems such as increased refrigerant mass flow

Inactive Publication Date: 2013-03-20
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the refrigerant is then in a further highly superheated state, i.e. at a high temperature t E , then too little refrigerant is injected into the evaporator and the mass flow of refrigerant may increase

Method used

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  • Refrigerating circuit for use in a motor vehicle
  • Refrigerating circuit for use in a motor vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] figure 1 A refrigeration circuit according to the invention is schematically shown and see now figure 2 The pressure-enthalpy diagram in is explained in more detail. The refrigeration circuit has a pressure line 4 and a suction line 6 . Pressure line 4 starts at the output of compressor 8 . Compressor 8 compresses the refrigerant to a liquefaction pressure P V , which in figure 2 is indicated by a state change A. Refrigerant at liquefaction pressure P V is transferred to the condenser 10, where the refrigerant releases heat, with the result that the refrigerant is in liquid state at the output of the condenser 10 and it has a liquefaction temperature t V . This state change in figure 2 Indicated by B.

[0012] From the condenser 10, the refrigerant is passed to the internal heat exchanger 12, in which the refrigerant in the pressure line 4 releases heat to the refrigerant in the suction line 6, which is shown by the pressure-enthalpy diagram The state chang...

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Abstract

The invention relates to a refrigerating circuit for use in a motor vehicle which has a refrigerant compressor (8) connected on the output side to a pressure line (4) and on the input side to a suction line (6). The refrigerating circuit has at least one condenser (10), at least one regulated expansion valve (14), at least one evaporator (16) and at least one inner heat exchanger (12). The regulated expansion valve (14) has a temperature tE in a detection zone (20) of the suction line (6) as a controlled variable. The detection zone (20) for the regulated expansion valve (14) is arranged at the output of the inner heat exchanger (12).

Description

technical field [0001] The invention relates to a refrigeration circuit for use in a motor vehicle, the refrigeration circuit having a refrigerant compressor which is connected on the output side to a pressure line and on the input side to a suction line; Having at least one condenser; having at least one regulating expansion valve; having at least one evaporator and having at least one internal heat exchanger, wherein the regulating expansion valve has as control variable in a detection zone of the suction line a temperature t E . Background technique [0002] Such refrigeration circuits are well known. In the simplest type of construction of this refrigeration circuit, the pressure line runs from the output of the compressor, through the condenser, to the input of the expansion valve. In the expansion valve the pressure is reduced and thus the suction line is connected to the output of the expansion valve leading through the evaporator and terminating at the compressor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06
CPCF25B2600/2513B60H2001/3291F25B1/00F25B40/00F25B41/00F25B2341/0683B60H1/3228F25B41/30F25B40/06F25B43/00
Inventor R·弗莱施哈克T·查皮B·弗里斯
Owner DR ING H C F PORSCHE AG
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