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Method and system for controlling hot water producing operation of heat pumps of double compressors

A technology of operation control and dual compressors, which is applied to fluid heaters, lighting and heating equipment, etc., and can solve problems such as inability to adapt to various engineering applications and large temperature fluctuations

Active Publication Date: 2014-08-06
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In addition, some heat pump water heaters only rely on the temperature of the water tank or the temperature of the water entering the heat exchanger or the temperature of the water leaving the heat exchanger to control the start and stop of the unit, that is, the compressor. bigger

Method used

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  • Method and system for controlling hot water producing operation of heat pumps of double compressors
  • Method and system for controlling hot water producing operation of heat pumps of double compressors
  • Method and system for controlling hot water producing operation of heat pumps of double compressors

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Embodiment Construction

[0052] The specific implementation of the operation control method and system of the dual-compressor heat pump hot water heating system of the present invention will be described below with reference to the accompanying drawings.

[0053] The control system (control part) provided by the embodiment of the present invention is used to control the heat pump cycle system (execution part), such as figure 1 As shown, the heat pump circulation system 1 includes a water circulation system 2 and a refrigerant circulation system 3;

[0054] The water circulation system 2 includes a water pump, a water tank, the water side of the first heat exchanger (condenser), and a circulating water pipeline; the refrigerant circulation system 3 includes a throttling expansion device, a second heat exchanger (evaporator), The first compressor, the second compressor, the refrigerant side of the first heat exchanger (condenser), and the refrigerant circulation pipeline.

[0055] figure 1 , figure ...

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Abstract

The invention discloses a method and a system for controlling hot water producing operation of heat pumps of double compressors. The method includes receiving inlet water temperatures, outlet water temperatures and the water temperature of a water tank in real time after temperature setting control signals of users are received; computing low-temperature threshold values and high-temperature threshold values; detecting temperatures set by the users, inlet water temperatures of first heat exchangers, outlet water temperatures of second heat exchangers and the temperature of the water tank, judging whether various operation conditions are met or not and reasonably controlling on and off of the double compressors. The inlet water temperatures, the outlet water temperatures and the water temperature of the water tank are monitored by a plurality of environmental thermal bulbs. The method and the system for controlling hot water producing operation of the heat pumps of the double compressors have the advantages that the various monitored internal temperatures of a water heater and the temperatures set by the users are analyzed, so that the stability of the temperature of the water tank can be guaranteed, actual requirements of the users can be met, the problem of halting due to overheat protection, overcurrent protection and the like under the condition of high inlet water temperatures can be solved, starting and halting of the double compressors can be reasonably controlled, and the service comfort can be guaranteed for the users.

Description

technical field [0001] The invention relates to the technical field of water heater equipment, in particular to an operation control method and system for hot water heating by a dual-compressor heat pump. Background technique [0002] At present, the heat pump water heater is a kind of high-efficiency and energy-saving product that is relatively mature and has gradually entered thousands of households. Among the many heat pump water heater products, there are products that directly produce hot water, and there are also recirculating heat pumps used with an insulated water tank, or a combination of both. [0003] But there are some common problems in conventional heat pump water heaters: [0004] Under high inlet water temperature, the unit will generate high condensing pressure and high exhaust temperature, and even various protection shutdowns of the compressor, such as over-current protection, high-pressure protection, etc., will affect the efficiency and use effect of th...

Claims

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Application Information

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IPC IPC(8): F24H9/20
Inventor 黄玉优冯海洋林海佳张苏璧于静
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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