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Water heater reservation control method and solar heat pump water heater

A technology of solar heat pump and control method, which is applied to fluid heaters, lighting and heating equipment, etc. It can solve the problems of not saving energy, inaccurate start time of heat pump, and inability to complete scheduled heating, etc., and achieve the effect of improving performance and improving overall performance

Active Publication Date: 2020-09-15
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a water heater scheduling control method to solve the problem that the existing solar heat pump water heater cannot complete the scheduled heating due to the inaccurate start time of the heat pump when the heating is scheduled, or the heating efficiency of the water heater is low and the energy is not saved.

Method used

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  • Water heater reservation control method and solar heat pump water heater

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Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, this embodiment provides a water heater reservation control method, which is applied to a direct expansion solar heat pump water heater, and includes the following steps:

[0026] Step S1: After the water heater is powered on, the system reads the preset temperature Ts and the preset time t1 set by the user, obtains the current temperature Tr and the current time t2 of the water tank, and calculates the difference between the preset temperature Ts and the current temperature Tr. Ts-Tr, and the difference t1-t2 between the scheduled time t1 and the current time t2; then calculate the energy Q that the system needs to absorb according to the formula Q=CM(Ts-Tr), where C is the specific heat capacity of water , M requires the mass of heated water.

[0027] Step S2: Count the ambient temperature and light intensity of the system for the first n days before the reservation, and calculate the heating power of the heat pump;

[0028] Here, the ambient...

Embodiment 2

[0051] This embodiment provides a solar heat pump water heater, which uses the water heater reservation control method described in the first embodiment to perform scheduled heating. The water heater includes a water tank, a compressor, an electronic expansion valve and a direct expansion evaporator that can absorb solar radiation heat. At the same time, the water heater is also provided with a temperature sensor and a light intensity sensor, wherein the light intensity sensor is preferably a photosensitive sensor, which can be used to detect the sun irradiance intensity.

[0052] In the water heater, the direct expansion evaporator and the light intensity sensor are respectively placed in the outdoor environment, so as to absorb and detect the solar radiation intensity. According to the ambient temperature and light intensity measured by the system, the heating power of the heat pump is calculated, and then the appropriate heating time is selected for heating, which makes ful...

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Abstract

The invention discloses a water heater appointment control method and relates to the technical field of water heaters. The water heater appointment control method is applied to a solar heat pump waterheater and comprises the following steps that the appointed temperature and appointed moment are read, and the energy needing to be absorbed is calculated; statists of the environment temperature andthe illumination intensity in the n days before appointment of the system is conducted, and the heat power of the heat pump is calculated; the heating time needed by the system is determined; whetherthe heating time is smaller than the difference value between the appointed moment and the current moment is judged, if yes, the optimal heating time of the system is selected to start heating, and if not, heating is started immediately. The invention also discloses the solar heat pump water heater. According to the water heater appointment control method, the environment temperature and the illumination intensity are used as the reference variables, the optimal heating time is selected to start the heat pump to conduct heating, the solar radiation heat is fully utilized, the inaccuracy, caused by adjustment conducted only according to the environment temperature, of the system is solved, the energy saving function is effectively achieved during appointment heating of the water heater, and the overall performance and the heating efficiency of the solar heat pump water heater are improved.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a water heater reservation control method and a solar heat pump water heater using the water heater reservation control method. Background technique [0002] The existing air source heat pump water heater reservation control methods mainly include two methods. The first is to calculate the required heating time through the system heating power and the amount of heat to be heated according to the user's reservation time, reservation temperature, and current time and temperature, and turn it on in advance. The heat pump is used for heating, and the scheduled heating is completed; the other is to determine the optimal start time of the system according to the temperature curve of the day after calculating the time that the heat pump needs to be heated. [0003] However, for solar heat pump water heaters that organically combine solar energy and air energy technologies, due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20F24H4/02
CPCF24H4/02F24H9/2007
Inventor 卢炳奇李伟渠荣华
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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