A control method, device, controller and system based on heat pump water heater

A technology for heat pump water heaters and control methods, which is applied to fluid heaters, lighting and heating equipment, etc., which can solve the problems of frequent start and stop of compressors and affect the reliability of heat pump water heaters, and achieve the effect of ensuring reliability

Active Publication Date: 2016-08-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the ambient temperature fluctuates frequently near the critical ambient temperature, the compressor of the heat pump water heater will start and stop frequently, which will affect the reliability of the heat pump water heater

Method used

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  • A control method, device, controller and system based on heat pump water heater
  • A control method, device, controller and system based on heat pump water heater
  • A control method, device, controller and system based on heat pump water heater

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Embodiment Construction

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0079] A heat pump water heater is a device that absorbs ambient temperature to heat water. Within the normal ambient temperature range, the pressure ratio and maximum pressure of the heat pump water heater are within an acceptable range. Once the ambient temperature and the current hot water temperature of the heat pump water heater make the pressure of the heat pump water heater When the ratio and the maximum pressure exceed the acceptable range, the heat pump wat...

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PUM

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Abstract

Embodiments of the invention disclose a control method, a control device, a controller and a control system based on a heat pump water heater. The control method includes: acquiring and detecting current ambient temperature and determining a temperature range of the current ambient temperature; when the current ambient temperature changes to a holding range, referring to a temperature association table and highest hot water temperature determining record; using highest hot water temperature, determined when the ambient temperature in the highest hot water temperature determining record changes to the holding range once, as current highest hot water temperature; controlling a compressor of the heat pump water heater to start or stop according to current water temperature and current highest hot water temperature. The holding range is between two adjacent temperature ranges of determined highest hot water temperature. By the use of the control method, the control device, the controller and the control system, the problem that the compressor of the heat pump water heater starts and stops frequently when the ambient temperature frequently changes around a critical temperature is overcome, and reliability of the heat pump water heater is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of heat pump water heater control, and more specifically, relates to a heat pump water heater-based control method, device, controller and system. Background technique [0002] A heat pump water heater is a device that transfers heat from a low-temperature medium to high-temperature water. Its working principle is: the evaporator absorbs heat from the ambient air to evaporate the heat-transfer working medium, the temperature and pressure of the working medium steam rise after being compressed by the compressor, and when the high-temperature steam condenses into a liquid through the condenser, the heat released is transferred to the water in the storage tank. The condensed heat transfer fluid returns to the evaporator through the expansion valve, and then is evaporated again, and so on. The heat pump water heater needs to operate when the outside temperature is -15°C-45°C. [0003] In the case of h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
Inventor 寇颖举董明珠谭建明李绍斌柳飞袁明征
Owner GREE ELECTRIC APPLIANCES INC
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