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Vehicle air conditioning device

A technology of air conditioning and adjustment devices, which is applied to vehicle components, air handling equipment, transportation and packaging, etc., and can solve problems such as the decline in heating capacity

Pending Publication Date: 2021-02-19
SANDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the frost on the outdoor heat exchanger grows, the heat exchange with the outside air is hindered, so the heating capacity decreases.

Method used

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  • Vehicle air conditioning device
  • Vehicle air conditioning device
  • Vehicle air conditioning device

Examples

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Embodiment Construction

[0038] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. figure 1A block diagram of a vehicle air-conditioning apparatus 1 to which an embodiment of the present invention is applied is shown. The vehicle to which the embodiment of the present invention is applied is an electric vehicle (EV) without an engine (internal combustion engine), and a battery 55 (for example, a lithium battery) is mounted on the vehicle, and the electric power charged into the battery 55 from an external power source is supplied to a driving motor. (Electric motor) 65 is supplied to a vehicle that drives and travels. Furthermore, the vehicle air-conditioning apparatus 1 is also powered by the battery 55 to be driven.

[0039] That is, the vehicle air-conditioning apparatus 1 performs the heating operation by the heat pump operation using the refrigerant circuit R, and further selectively performs the dehumidification and heating operation in an elect...

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PUM

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Abstract

Provided is a vehicle air conditioning device that can prevent damage to a compressor due to liquid compression when defrosting an outdoor heat exchanger, and that can prevent excessive cooling of a battery or the like. This invention is provided with an object-to-be-temperature-regulated temperature regulation device (61) that regulates the temperature of an object that is subject to temperatureregulation such as a battery (55) by circulating a heat medium through the object. The object-to-be-temperature-regulated temperature regulation device has a refrigerant / heat-medium heat exchanger (64) that causes heat exchange between a refrigerant and the heat medium, and heat medium heaters (66A, 66B). The refrigerant discharged from a compressor (2) is caused to release heat in an outdoor heatexchanger (7) and is then decompressed. Thereafter, a defrosting operation is executed, in which heat is absorbed from the heat medium in the refrigerant / heat-medium heat exchanger. Through the defrosting operation, the heat medium heaters control the temperature of the object that is subject to temperature regulation so as to be at least a prescribed lower limit value TL.

Description

technical field [0001] The present invention relates to a heat pump-type vehicle air conditioner capable of adjusting the temperature of an object to be temperature-regulated, such as a battery mounted on a vehicle, and particularly relates to defrosting of an outdoor heat exchanger. Background technique [0002] Due to the emergence of environmental problems in recent years, vehicles such as hybrid vehicles and electric vehicles, which drive a travel motor with electric power supplied from a mounted battery, have become widespread. Furthermore, as an air-conditioning apparatus applicable to such a vehicle, an apparatus including a refrigerant circuit connecting a compressor, a radiator, a heat absorber, and an outdoor heat exchanger has been developed; The refrigerant sprayed from the compressor dissipates heat in the radiator, and the refrigerant after heat dissipation in the radiator absorbs heat in the outdoor heat exchanger, thereby heating the vehicle interior; Dissip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/22
CPCB60H1/32B60H1/22
Inventor 石关彻也
Owner SANDEN CORP