Control method and device for high-precision direct-expansion heat pump air conditioner

A heat pump air conditioner and control method technology, applied in heating and ventilation control systems, heating methods, household heating and other directions, can solve problems such as poor system heat dissipation, easy frosting of outdoor heat exchangers, unstable temperature control, etc., to avoid Influence, maintain the indoor temperature, and ensure the effect of stable output

Active Publication Date: 2021-12-31
GUANGDONG EUROKLIMAT AIR CONDITIONING & REFRIGERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the heat pump air conditioner is heating in the low temperature season, due to the low outdoor temperature and high humidity, the surface of the outdoor heat exchanger is prone to frost. If it cannot be defrosted in time, it will lead to poor heat dissipation of the system. It is necessary to shut down regularly for defrosting to ensure the normal operation of the system, which leads to unstable temperature control when the air conditioning system is heating in a low-temperature and high-humidity environment

Method used

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  • Control method and device for high-precision direct-expansion heat pump air conditioner
  • Control method and device for high-precision direct-expansion heat pump air conditioner
  • Control method and device for high-precision direct-expansion heat pump air conditioner

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Effect test

Embodiment 1

[0037] see figure 1 , the invention discloses a control method of a high-precision direct expansion heat pump air conditioner. The high-precision direct expansion heat pump air conditioner includes at least two heat pump systems, and the control method includes:

[0038] When the high-precision direct expansion heat pump air conditioner is running, if there is no heat pump system in the defrosting state, at least one heat pump system should be kept idle.

[0039] When there is a heat pump system that meets the defrosting conditions among the heat pump systems in the working state, it is controlled to enter the defrosting state and the number of heat pump systems that remain idle is selected to enter the working state.

[0040] Make the defrosted heat pump system enter the idle state.

[0041] The present invention keeps at least one heat pump system in an idle state when there is no heat pump system in the defrosting state in the high-precision direct expansion heat pump air ...

Embodiment 2

[0059] see Figure 5 , the present invention also discloses a control device for a high-precision direct expansion heat pump air conditioner. The high-precision direct expansion heat pump air conditioner includes at least two heat pump systems, and the device includes a controller 30 configured as:

[0060] When the high-precision direct expansion heat pump air conditioner is running, if there is no heat pump system in the defrosting state, at least one heat pump system should be kept idle;

[0061] When there is a heat pump system that meets the defrosting conditions in the heat pump system in the working state, control it to enter the defrosting state and select the same number of heat pump systems that remain idle as the heat pump systems entering the defrosting state to enter the working state;

[0062] Make the defrosted heat pump system enter the idle state.

[0063] When the heat pump system of the present invention meets the defrosting conditions, it can control the h...

Embodiment 3

[0065] see Image 6 , the present invention also discloses a high-precision direct expansion heat pump air conditioner, comprising:

[0066] processor 40;

[0067] memory 50, wherein executable instructions of the processor 40 are stored;

[0068] Wherein, the processor 40 is configured to execute the control method of the high-precision direct expansion heat pump air conditioner as described in the first embodiment by executing executable instructions.

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Abstract

The invention discloses a control method and device for a high-precision direct-expansion heat pump air conditioner. The control method comprises the steps that when the high-precision direct-expansion heat pump air conditioner operates, if heat pump systems in a defrosting state do not exist, at least one heat pump system is kept in an idle state; when the heat pump systems meeting the defrosting condition exist in the heat pump systems in a working state, the heat pump systems are controlled to enter the defrosting state, and the heat pump systems which are kept in the idle state and have the same number as the heat pump systems entering the defrosting state are selected to enter the working state; and the heat pump systems completing defrosting enter the idle state. According to the control method and device, when the high-precision direct-expansion heat pump air conditioner operates in a defrosting mode, the situation that the indoor temperature is affected after the heat pump systems enter the defrosting state can be avoided, and then the constant indoor temperature is maintained.

Description

technical field [0001] The invention relates to the technical field of air conditioning control, in particular to a control method and device for a high-precision direct expansion heat pump air conditioner. Background technique [0002] As concepts such as double carbon and energy saving gradually enter the hearts of the public, air conditioners have always been an indispensable part of daily life and production. Among them, there are some process occasions that require temperature and humidity. If the environment temperature and humidity fluctuate, it will directly affect the quality of the product and the production order. Therefore, it is necessary to use a high-precision air-conditioning control system to keep the environment at a constant temperature and humidity state. Constant temperature and humidity air conditioners consume a lot of energy, and their operating power may even exceed the total power of production equipment. Air source heat pump technology is an energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/54F24F11/61F24F11/64F24F11/42F24F11/873F24F110/12
CPCF24F11/54F24F11/61F24F11/64F24F11/42F24F11/873F24F2110/12Y02B30/70
Inventor 罗意明蔡晓辉杨卫刚房一鸣李锐涛
Owner GUANGDONG EUROKLIMAT AIR CONDITIONING & REFRIGERATION
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