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Heat pump system and its water pump control method

A control method and technology of a heat pump system, applied in pump control, liquid variable capacity machinery, machines/engines, etc., can solve problems such as energy waste, and achieve the effect of improving heat quality, reducing heating temperature difference, and increasing outlet water temperature

Active Publication Date: 2021-04-27
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the defects of energy waste in existing water pump control methods, the present invention proposes a heat pump system and a water pump control method thereof

Method used

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  • Heat pump system and its water pump control method

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Embodiment Construction

[0032] The water pump control method proposed by the present invention is applicable to a heat pump system. The heat pump system has a water-side heat exchanger and at least one compressor. The compressor drives the refrigerant to circulate in the flow path where it is located. The heat exchange part of the heat exchanger. The water pump drives the water to flow into the water side heat exchanger from the inlet of the water side heat exchanger. When flowing through the water side heat exchanger, it exchanges heat with each heat exchange part in turn, and then exchanges heat from the water side. The outlet of the heater flows out, and the water pump is a variable frequency water pump with adjustable speed. The maximum and minimum voltages are set in advance according to the operating range of the water pump, and the voltage range is divided into multiple voltage levels. Each voltage level corresponds to a water pump level. , adjust the speed of the water pump by controlling the ...

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Abstract

The invention discloses a heat pump system and a water pump control method thereof. The water pump control method of the heat pump system includes: setting several different adjustment conditions in advance, and each adjustment condition corresponds to a water pump control logic; The parameter is compared with the adjustment condition, and if the operation parameter meets a certain adjustment condition, the speed of the water pump is adjusted according to the water pump control logic corresponding to the adjustment condition. The invention can execute different water pump control logics according to the operating parameters of the heat pump system, and dynamically adjust the speed of the water pump to ensure stable and reliable operation of the system.

Description

technical field [0001] The invention relates to the technical field of water pump speed regulation control, in particular to a heat pump system and a water pump control method thereof. Background technique [0002] Traditional heat pump engineering pumps mostly use fixed frequency pumps or variable frequency pumps for fixed frequency control. Although fixed frequency control is simple and easy to implement, there are problems of energy waste and insufficient utilization of variable frequency pumps in practical applications. For example, in the early stage of heating, the end of the heat pump project is very cold, and the inlet water temperature of the water side heat exchanger is low. If the traditional water pump control method is used, the water temperature needs to be heated up slowly. During this period of slow heating, because the heat grade is too low, almost Unable to use, resulting in waste of energy. After the temperature rises, the heating capacity of the heat pum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06
CPCF04B49/06
Inventor 余凯邓志扬袁明征张勇
Owner GREE ELECTRIC APPLIANCES INC
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