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Heat pump water heater control method, control device and heat pump water heater

The technology of a heat pump water heater and a control method is applied in the fields of heat pump water heaters, control devices, and control methods of heat pump water heaters. normative effect

Active Publication Date: 2016-03-02
GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method used by the existing heat pump water heaters to detect the change of the water temperature in the water tank is to place a temperature sensor in the water tank to detect the change of the water temperature in the water tank in real time and control the start-up of the heat pump host. Although this control method is simple and easy , but also has its disadvantages: 1. The temperature sensor needs to be installed in the water tank by after-sales installers on site. The installation is not standardized and the reliability is not high. When the water temperature detection deviates, it will lead to abnormal startup, such as frequent startup; 2. After the temperature sensor fails, because the water temperature in the water tank is unknown, it cannot be turned on, which affects the normal use of the heat pump water heater, resulting in no hot water available for users

Method used

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  • Heat pump water heater control method, control device and heat pump water heater
  • Heat pump water heater control method, control device and heat pump water heater
  • Heat pump water heater control method, control device and heat pump water heater

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Embodiment Construction

[0036] It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0037] The core idea of ​​the present invention is: add an auxiliary temperature sensor for sensing the water temperature in the circulating waterway in the heat pump main unit of the heat pump water heater, and make a comprehensive judgment through the main temperature sensor in the water tank and the auxiliary temperature sensor in the heat pump main unit, It can effectively eliminate the detection deviation caused by abnormality, ensure the normal start and stop of the heat pump host, and when the main temperature sensor fails, the auxiliary temperature sensor can be used to control the start and stop of the heat pump host to ensure the user's water supply.

[0038] figure 1 It is a schematic flow chart of a preferred embodiment of the control method of the heat pump water heater in the present inv...

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Abstract

The invention discloses a control method and control device of a heat-pump water heater and the heat-pump water heater. The control method includes the steps of S10, detecting whether a main temperature sensor in a water tank breaks down or not, executing the step S11 if the main temperature sensor does not break down, executing the step S12 if the main temperature sensor breaks down, S11, judging whether the starting condition of a heat pump main machine is met or not according to the water temperature sensed by the main temperature sensor, executing the step S12 if the starting condition of the heat pump main machine is met, executing the step S10 if the starting condition of the heat pump main machine is not met, S12, starting a water pump in a circulation water route for a certain preset time in a continuous mode, S13, judging whether the starting condition of the heat pump main machine is met or not according to the water temperature sensed by an auxiliary temperature sensor, executing the step S14, if the starting condition of the heat pump main machine is met, executing the step S10 if the starting condition of the heat pump main machine is not met, and S14, starting the heat pump main machine to conduct heating. According to the control method of the heat-pump water heater, water temperature detection deviations caused by abnormal reasons can be effectively removed, the heat pump main machine can be normally started and stopped, and water utilization of a user is guaranteed.

Description

technical field [0001] The invention relates to the technical field of water heater control, in particular to a heat pump water heater control method, a control device and the heat pump water heater. Background technique [0002] In the existing heat pump water heater, the heat pump host and the water tank are connected by pipelines to form a circulating waterway, and a water pump is installed in the circulating waterway. When the heat pump host is used to heat the water, the water pump is turned on to make the water in the water tank pass through the heat pump host repeatedly. And make the water temperature rise of whole box water reach setting temperature. At present, the start-up of the heat pump main engine is generally controlled by detecting the change of the water temperature in the water tank, and the start-up is started when the water temperature is lower than the preset value. The method used by the existing heat pump water heaters to detect the change of the wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
Inventor 乔晓光
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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