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Heat pump water heater and its control method

A technology of a heat pump water heater and a control method, which is applied in the directions of heating mode, temperature control, fluid heater, etc., can solve the problems of performance degradation of the heat pump water heater and the like

Active Publication Date: 2016-03-30
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a heat pump water heater and its control method, so as to solve the problem in the prior art that the performance of the heat pump water heater decreases as the water temperature rises

Method used

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  • Heat pump water heater and its control method
  • Heat pump water heater and its control method

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] The embodiment of the present invention provides a heat pump water heater, and the heat pump water heater provided by the embodiment of the present invention is introduced in detail below:

[0029] The heat pump water heater provided by the embodiment of the present invention mainly includes a water tank, a detection unit, a compressor and a control unit, wherein the detection unit is used to detect the water temperature in the water tank, and may be a thermocouple or thermal resistance temperature sensor, or may be a Temperature sensor pack. The motor coil of the compressor has multi-level windings, and the resistance value of the nth winding of the multi-level winding is smaller than ...

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Abstract

The invention discloses a heat pump water heater and a control method thereof. Wherein, the heat pump water heater includes: a water tank; a detection unit for detecting the water temperature in the water tank to obtain the detected water temperature; a compressor, the motor coil of the compressor has a multi-level winding, wherein the resistance value of the nth winding of the multi-level winding is less than The resistance value of the n-1th winding in the multi-level winding, where n is a natural number greater than 2; and the control unit, which is connected to the detection unit and the compressor, is used to find the winding corresponding to the detected water temperature, and obtain the pth winding , and control the compressor to operate with the pth winding. The present invention solves the problem of performance degradation of the heat pump water heater in the prior art as the water temperature rises, and further achieves the effect of improving the overall performance of the heat pump water heater.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a heat pump water heater and a control method thereof. Background technique [0002] The overall unit performance of the heat pump water heater will decrease as the temperature of the hot water increases, that is, the higher the water temperature, the lower the performance of the heat pump water heater. Especially for heat pump water heater products using fixed-frequency compressors, since the fixed-frequency compressor motor has a fixed number of turns, a fixed winding, and a fixed speed, it is impossible to adjust the frequency or speed of the compressor according to the operating conditions of the system under different water temperature conditions. The performance of the heat pump water heater will drop significantly in the first stage, resulting in a decline in the overall performance of the heat pump water heater throughout the heating process. [0003] For the problem of perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F24H9/20G05D23/20
CPCF24H4/04F24H15/223F24H15/156F24H15/421F24H15/38F24H9/2014
Inventor 寇颖举李绍斌曹浩史帆柳飞袁明征
Owner GREE ELECTRIC APPLIANCES INC
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