Air conditioner

A technology of air-conditioning equipment and control devices, which is applied to air handling equipment, mechanical equipment, lighting and heating equipment, etc., and can solve problems such as reducing the working volume of compressors

Inactive Publication Date: 2003-12-24
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is necessary to reduce the load acting on the engine, if the displacement of the compressor is controlled according to the suction pressure Ps, the displacement of the compressor cannot be rapidly reduced.

Method used

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Examples

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Embodiment Construction

[0027] The following will refer to Figures 1 to 10 An embodiment of the automobile air conditioner of the present invention will be described. Such as figure 1 As shown, the refrigeration circuit (refrigerant circuit) of the air conditioner includes a displacement compressor and an external refrigerant circuit 30 . For example, the external refrigerant circuit 30 has a condenser 31 , a thermal expansion valve 32 , or a pressure reducing device, and an evaporator 33 . A temperature sensor 34 is arranged near the outlet of the evaporator 33 , or downstream of the evaporator 33 . The opening of the expansion valve 32 is controlled by a feedback control program based on the temperature measured by the temperature sensor 34 and the evaporation pressure in the evaporator (evaporator outlet pressure). Therefore, the amount of liquid refrigerant supplied to the evaporator by the expansion valve 32 is equivalent to the heat load acting on the evaporator, thereby regulating the ref...

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PUM

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Abstract

An air-conditioning apparatus having a refrigerant circuit including a condenser, a pressure reducing device, an evaporator, and a variable displacement compressor. The air-conditioning apparatus has a torque detecting device and an external information detecting device. The torque detecting device directly or indirectly detects the reaction torque acting on the compressor, and the external information detecting device detects various external information other than the torque. The air-conditioning apparatus further has a control device for determining a target torque in accordance with the external information provided by the external information detecting device. The control device executes a feedback control program for controlling the displacement of the compressor such that the torque detected by the torque detecting device approaches the target torque.

Description

technical field [0001] The air conditioner involved in the present invention has a refrigerant circuit, and the refrigerant circuit includes a condenser, a decompression device, an evaporator, and a variable capacity compressor. More specifically, the present invention relates to a The control program of the working volume of the variable capacity compressor. Background technique [0002] Conventional automotive air-conditioning equipment has a refrigerant circuit including a condenser, an expansion valve (pressure reducing device), an evaporator and a compressor. The evaporator sends refrigerant gas to the compressor where it is compressed and sent to the condenser. The refrigerant flowing in the evaporator refrigerant circuit exchanges heat with the air drawn in from the passenger compartment. That is, heat is transferred from the air flowing through the evaporator to the refrigerant flowing in the evaporator. This heat transfer varies with the heating or cooling load. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06B60H1/32F04B27/14F25B1/00
CPCB60H2001/3266B60H2001/3261B60H2001/3255B60H2001/3238B60H1/3216B60H2001/325B60H1/3205B60H1/3208B60H2001/3275B60H1/32
Inventor 竹中健二太田雅树柏木阳一郎川口真广园部正法樽谷知二大立泰治仓挂浩隆宫川和仁山中康司
Owner TOYOTA IND CORP
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