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Water temperature control method of heat pump cold and hot water system and heat pump cold and hot water system

A water temperature control method, cold and hot water technology, applied in the direction of heat pumps, heating methods, heating and ventilation control systems, etc., can solve the problem of affecting user comfort, increasing unnecessary energy consumption of heat exchange hosts, and difficulty in meeting the needs of various indoor terminals Demand and other issues, to achieve the effect of improving comfort, improving operating efficiency, and reducing unnecessary energy consumption

Pending Publication Date: 2022-07-05
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This solution cannot determine the energy supply demand increment according to the temperature offset of each indoor end, and cannot accurately control the target water temperature of the indoor unit, resulting in the heat exchange host always supplying energy according to the maximum load, which increases the unnecessary energy of the heat exchange host. consumption, it is difficult to meet the use requirements of each indoor end, affecting the comfort of users

Method used

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  • Water temperature control method of heat pump cold and hot water system and heat pump cold and hot water system
  • Water temperature control method of heat pump cold and hot water system and heat pump cold and hot water system
  • Water temperature control method of heat pump cold and hot water system and heat pump cold and hot water system

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Experimental program
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Embodiment 1

[0057] Traditional heat pump cold and hot water units often only set one target water temperature to meet the cooling or heating needs of multiple indoor terminals, and there is a lack of linkage between the indoor terminal and the heat exchange host. Due to the different needs of different indoor terminals, the set temperature of each indoor terminal It is not the same. Fixing a water supply temperature of the heat exchange host can easily cause insufficient cooling or heating at some indoor terminals, and cannot fully meet the cooling or heating needs of each indoor terminal, affecting the user's comfort. The existing technology cannot determine the increment of energy supply demand according to the temperature offset of each indoor terminal, and cannot accurately control the target water temperature of the indoor unit, resulting in the heat exchange host always supplying energy according to the maximum load, increasing the unnecessary heat exchange host. Energy consumption, ...

Embodiment 2

[0080] In order to facilitate understanding, an embodiment of a water temperature control method for a heat pump cold and hot water system is provided below for illustration. In practical applications, the temperature difference between the inlet and outlet water of the indoor unit can be determined by determining the target energy supply, and then by obtaining the inlet water temperature The target outlet water temperature is determined by the temperature, so as to achieve the purpose of controlling the water temperature of the indoor unit, ensuring that the energy supply demand of each indoor terminal is met, and the operation efficiency is improved.

[0081] see figure 2 , the second embodiment of the water temperature control method of the heat pump cold and hot water system shown in the embodiment of the present application includes:

[0082] 201. Obtain the weather forecast temperature and the indoor set temperature within a preset time period, and determine the indoor ...

Embodiment 3

[0114] For ease of understanding, an example of a water temperature control method for a heat pump cold and hot water system is provided below for illustration. In practical applications, after the target outlet water temperature is determined, the target outlet water temperature can be used as an input to control the heat exchange host to adjust the compression The frequency of the machine and the opening of the throttling device are adjusted to achieve the effect of intelligent control, improve the control accuracy of the heat exchange host, and prolong the service life.

[0115] see image 3 , the third embodiment of the water temperature control method of the heat pump cold and hot water system shown in the embodiment of the present application includes:

[0116] 301. Feed back the target outlet water temperature to the heat exchange host;

[0117] Feedback the predicted target outlet water temperature to the controller of the heat exchange host. The feedback form can be ...

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Abstract

The invention relates to a water temperature control method of a heat pump cold and hot water system. The method comprises the following steps: acquiring a weather predicted temperature and an indoor set temperature within a preset duration; according to the weather predicted temperature and the preset temperature difference value, the indoor predicted temperature within the preset duration is determined; determining a temperature prediction offset according to the indoor prediction temperature and the indoor set temperature; determining an energy supply prediction increment according to the temperature prediction offset; determining an increment prediction cumulative sum according to the energy supply prediction increment of each indoor tail end; and determining the target outlet water temperature of the indoor unit of the heat exchange host according to the incremental prediction cumulative sum. According to the scheme, the purpose of accurately controlling the target water outlet temperature of the indoor unit can be achieved, it is ensured that the energy supply requirement of each indoor tail end is met, the user comfort degree is improved, the heat exchange main machine is prevented from running in the maximum load state all the time, unnecessary energy consumption of the heat exchange main machine is reduced, the running efficiency is improved, and the energy-saving and environment-friendly effects are achieved.

Description

technical field [0001] The present application relates to the technical field of heat pump cold and hot water systems, and in particular, to a water temperature control method for a heat pump cold and hot water system and a heat pump cold and hot water system. Background technique [0002] With the advancement of science and technology and the improvement of the quality of life, the application of heat pump cold and hot water systems in general households has gradually become popular, which can meet the heating needs in winter and also take into account the cooling in summer. The cooling or heating demand at the end of the room. Traditional heat pump cold and hot water units often only set one target water temperature to meet the cooling or heating needs of multiple indoor terminals, and there is a lack of linkage between the indoor terminal and the heat exchange host. Due to the different needs of different indoor terminals, the set temperature of each indoor terminal It i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/86F24F11/84F24F11/46F25B30/02F25B49/02
CPCF24F11/64F24F11/86F24F11/84F24F11/46F25B30/02F25B49/02
Inventor 陈志杰尚瑞李天阳曹巍黄太平李思佳
Owner GREE ELECTRIC APPLIANCES INC