Control method and heat pump unit for controlling operation of compressor

A control method and compressor technology, applied in the field of heat pumps, can solve problems such as not being able to guarantee the life cycle of the compressor, and achieve the effect of prolonging the service life

Active Publication Date: 2019-01-15
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This protection method cannot completely protect the compressor (such as the inverter compressor) to operate within the reliable operating pressure range, so it cannot guarantee the life cycle of the compressor

Method used

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  • Control method and heat pump unit for controlling operation of compressor
  • Control method and heat pump unit for controlling operation of compressor

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Embodiment Construction

[0020] The invention will be described in detail below by means of exemplary embodiments with reference to the drawings. The following detailed description of the present invention is for the purpose of illustration only, and in no way limits the present invention and its application or use.

[0021] refer to figure 1 ( figure 1 To show a structural block diagram of the heat pump unit according to the present invention), the heat pump unit 100 according to the present invention includes a compressor 1 and a control device (not shown). In the illustrated example, the heat pump unit 100 may also include: exhaust temperature sensor 2, high pressure sensor (exhaust pressure sensor) 3, high pressure switch 4, four-way valve 5, fin heat exchanger 6, ambient temperature sensor Package 7, defrosting temperature sensing package 8, filter 9, electronic expansion valve 10, plate heat exchanger 11, low pressure sensor (suction pressure sensor) 12 and suction temperature sensing packag...

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Abstract

The invention relates to a control method for controlling operation of a compressor and an associated heat pump unit. According to one aspect of the invention, the control method for controlling operation of the compressor is provided. The control method comprises the steps of: obtaining an exhaust pressure (Pd) of the compressor (1); obtaining a suction pressure (Ps) of the compressor (1); comparing the obtained exhaust pressure (Pd) and the obtained suction pressure (Ps) with a preset pressure ratio limiting value; and controlling the operation of the compressor (1) based on the pressure ratio comparing result. According to the control method, the range exceeding of the operation pressure of the compressor can be prevented, so that the compressor can be effectively protected, and the service life of the compressor is prolonged.

Description

technical field [0001] The present invention relates to the field of heat pumps, in particular to a control method for controlling the operation of a compressor and an associated heat pump unit, which are improved in the control of the operating pressure of the compressor. Background technique [0002] At present, heat pump units (such as heating and cooling air-conditioning units and air source heat pump water heater units) usually stay at a single maximum pressure protection value for compressor pressure control (such as figure 2 The B-A horizontal line in the exhaust pressure upper limit line) and the minimum pressure protection value (such as figure 2 The E-C vertical line in the middle - the lower limit line of the inspiratory pressure). This protection method cannot completely protect the compressor (such as an inverter compressor) to operate within a reliable operating pressure range, so that it cannot guarantee the life cycle of the compressor. [0003] Here, it sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F25B49/02
CPCF25B30/02F25B49/022
Inventor 姚鸿海曾凡卓孟红武王传华谷月明李桂强宋鹏王晓红朱新
Owner GREE ELECTRIC APPLIANCES INC
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