Solar assisted heat pump heater and control method

A technology of solar heat pump and control method, which is applied to the control of the above-mentioned water heater, solar heat pump water heater, heat pump water heater field, can solve the problems of high production cost of heat pump system, unfavorable mass production, etc., and achieve suitable promotion and use, and sufficient heat exchange efficiency Play and improve the effect of system efficiency

Active Publication Date: 2017-03-01
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned first and second methods, although the control method is more precise and the power of the heat pump system is high-efficiency, due to the use of high-cost components (inverter compressors in the first method), or the addition of components (the second method The solar radiation intensity sensor is added in the method), which makes the production cost of the heat pump system higher, which is not conducive to mass production

Method used

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Effect test

Embodiment 1

[0052] In this embodiment, the solar heat pump water heater further includes an electric heating module for heating the water in the water tank. The electric heating module can be composed of electric heating tubes, electric heating wires and other components arranged in the water tank and / or on the outer wall of the water tank to achieve direct or indirect contact with the water in the water tank to complete the purpose of preparing high-temperature water. (not indicated in the attached picture)

[0053] When the heat pump system prepares high-temperature water, there are disadvantages such as slow water temperature rise rate and high energy consumption in the heating process; therefore, when the water temperature in the water tank is higher than the set value T2, the heat pump system stops working, and the electric heating module is used to control the water temperature in the water tank. By heating the water, the purpose of rapid and low-energy preparation of high-temperatu...

Embodiment 2

[0063] In this embodiment, the heat pump water heater can adjust the opening of the electronic expansion valve of the heat pump system correspondingly according to the difference between day and night, and according to the presence or absence of solar radiation heat, so as to provide the best heating mode for the system. Therefore, the heat pump water heater can be adjusted according to the water temperature of the water tank, according to different heating methods and temperature parameters, so as to be suitable for complex external environment changes.

[0064] In this embodiment, when the working time of the water heater is in the daytime mode, the corresponding variable P1 is obtained according to the detected temperature of the evaporator environment; and the corresponding electronic expansion valve is obtained according to the detected value of the compressor suction end temperature or the discharge end temperature Opening degree P0; thus, the final electronic expansion v...

Embodiment 3

[0080] Such as figure 1 As shown, in this embodiment, the evaporator 100 is provided with an evaporator temperature sensor 4 for detecting the temperature of the evaporator 100 itself, and an ambient temperature sensor 5 for detecting the ambient temperature of the evaporator 100 . The evaporator temperature sensor 4 is arranged on the back of the evaporator 100; the ambient temperature sensor 5 is arranged on the side of the evaporator 100 to improve measurement accuracy.

[0081] Through the above settings, the opening of the electronic expansion valve can be adjusted correspondingly according to the temperature of the evaporator itself and the ambient temperature, so as to optimize the power of the heat pump system.

[0082] In the process of steps 1) to 5) of the first embodiment above, the evaporator temperature change rate is obtained according to the evaporator temperature detection value; when the evaporator temperature change rate is larger, the opening of the electro...

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Abstract

The invention relates to a solar assisted heat pump heater and a control method. The heater comprises a heat pump system, wherein the heat pump system comprises a blow expansion type evaporator, a compressor, a condenser and an electronic expansion valve and is used for allowing cold media to flow, and the condenser is arranged in a water tank and/or outside the water tank, so that the cold media flowing through the evaporator are subjected to heat exchange with water in the water tank; temperature sensors for detecting temperature of the flowing cold media are arranged on an air suction pipeline and an air exhaust pipeline of the compressor respectively. When the temperature Tr of the water tank is lower than a set value T1, corresponding electronic expansion valve opening is obtained according to a temperature detection value of an air suction end of the compressor; when the temperature Tr of the water tank is higher than the set value T1, the corresponding electronic expansion valve opening is obtained according to a temperature detection value of an air exhaust end of the compressor. According to the device and the method, indexing control is adopted according to the water temperature of the water tank during heating of the heat pump, so that the control precision of the electronic expansion valve is higher in a preparation process, the heating efficiency is improved, and the energy consumption is reduced.

Description

technical field [0001] The present invention relates to a solar heat pump water heater in the field of water heaters, in particular to a heat pump water heater capable of heating by using solar energy and air energy at the same time; and also relates to a control method of the above water heater. Background technique [0002] At present, evaporators are mostly used in refrigerators, freezers, wine cabinets, air energy heat pumps and other products on the market. Solar heat pump evaporators appear in the market later, and the products are larger than refrigerators, freezers, wine cabinets, and air energy heat pump evaporators. Although it appeared late, solar heat pump water heaters have developed rapidly because of their advantages such as high heat conduction efficiency and fast heat exchange rate. [0003] In addition, after the solar heat pump water heater adopts the expansion evaporator, it can absorb both solar radiation heat and heat in the air. Therefore, a new contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/04F24H9/00F24H9/20
Inventor 卢炳奇渠荣华周志成
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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