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Motor vehicle refrigerant circuit with a refrigeration system circuit and a heat pump circuit

A technology for refrigerant circuits, motor vehicles, applied in the direction of compressors with reversible cycles, refrigerators, refrigeration and liquefaction, etc., can solve the problem of increased heat demand, reduced air heat pump output, increased risk of condenser freezing, etc. problem, to achieve the effect of increasing vehicle travel and reducing electric power consumption

Active Publication Date: 2013-01-30
HANON SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, heat is drawn from the ambient air by using the refrigeration system condenser as a heat pump evaporator, which leads to an increased risk of ice formation in the heat pump evaporator / refrigeration system condenser due to excessively high pressure losses during heat pump operation
[0007] It is also disadvantageous that the output of air-to-air heat pumps decreases as the ambient temperature drops, yet the heat demand to properly heat the vehicle cabin at low temperatures naturally increases

Method used

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  • Motor vehicle refrigerant circuit with a refrigeration system circuit and a heat pump circuit
  • Motor vehicle refrigerant circuit with a refrigeration system circuit and a heat pump circuit
  • Motor vehicle refrigerant circuit with a refrigeration system circuit and a heat pump circuit

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Embodiment Construction

[0035] figure 1 The refrigerant circuit of a motor vehicle in a preferred embodiment is shown. The refrigerant circuit 1 can realize a refrigeration system mode and a heat pump mode.

[0036] In refrigeration system mode, the refrigeration system condenser 2 is first arranged downstream of the refrigerant compressor 5 in the usual manner. According to a preferred but not essential embodiment of the present invention, the refrigerant flows to the refrigeration system condenser 2 via an internal heat exchanger 9, also known as a subcooling counterflow device. Subsequently, the refrigerant is expanded in the expansion valve 11, which is preferably configured in such a way that the refrigerant can flow therethrough bidirectionally, and the refrigerant is passed via the bifurcation point 18 to Refrigeration system and heat pump evaporator 3.

[0037] In the broad sense of the invention, a component that can act as an expansion member is designated an expansion valve. Thus, in a...

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Abstract

The invention relates to a motor vehicle refrigerant circuit provided with a refrigeration system circuit and a heat pump circuit which are used for air conditioning and heating of a motor vehicle, wherein heat pump condenser (4), a refrigeration system and a heat pump evaporator (3), and a chiller (10) in a coolant circuit are configured to serve as extra heat pump evaporators in the heat pump circuit and are in serial connection, and an expansion member (17) is connected with the chiller (10) at a coolant side and disposed in the coolant circuit by serving as a member for heating the coolant.

Description

technical field [0001] The invention relates to a motor vehicle refrigerant circuit with a refrigeration system circuit and a heat pump circuit for air conditioning and heating of a motor vehicle. Background technique [0002] Since the amount of waste heat from the drive engine is no longer sufficient in modern motor vehicles, these vehicles require a supplementary heat source for conditioning the vehicle cabin at relatively low ambient temperatures. [0003] Various methods of solving this problem are known in the prior art, which relate to systems for heating and also to heat pump circuits of refrigeration systems for the air conditioning of vehicles, which systems and heat pump circuits are usually present in all in the vehicle mentioned above. [0004] For example, an air-conditioning system for a vehicle realizing interconnection with a heat pump is known from DE 10 200 900 A1. The cooling circuit of the engine is coupled to the heat pump circuit of the refrigeration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/32F25B30/00
CPCF25B2313/02791B60H1/00271F25B13/00B60H1/32F25B30/00B60H1/00
Inventor M·格拉夫T·哈斯
Owner HANON SYST
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