Natural wind identification control method and system of heat pump unit and storage medium

A control method and technology of heat pump units, applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc. Interference, the effect of improving reliability

Active Publication Date: 2022-03-29
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the unit is installed in a position with strong natural wind in the prior art, it is impossible to identify whether the operating parameters of the unit are normally adjusted or caused by the interference of natural wind. After the unit is disturbed by natural wind, the opera

Method used

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  • Natural wind identification control method and system of heat pump unit and storage medium
  • Natural wind identification control method and system of heat pump unit and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0049] Implementation case one:

[0050] like figure 1 As shown, a method for identifying and controlling natural wind of a heat pump unit includes:

[0051] The cooling operation of the unit starts, and in the running time period Δt 0 After stable working conditions, the optimal time period Δt 0 = 10min. After the working condition is stable, the ambient temperature of the outdoor unit is obtained through the outdoor environment temperature sensor package. First, the time period Δt is obtained 1 The minimum ambient temperature T min , the preferred time period Δt 1 =3min, the time period Δt 1 The minimum ambient temperature T min Marked as the target temperature T C .

[0052] After a fixed cycle time, get the time period Δt of the outdoor unit 2 The ambient temperature interval, the fixed period is preferably 30min, according to the maximum value T of the ambient temperature interval Cmax and / or minimum T Cmin with the target temperature T C The temperature devia...

Example Embodiment

[0064] Implementation case two:

[0065] A natural wind recognition control system for a heat pump unit, comprising:

[0066] The first acquisition module is used to acquire the time period Δt of the outdoor unit 1 The minimum ambient temperature T min ;

[0067] The second acquisition module is used to acquire the time period Δt of the outdoor unit 2 ambient temperature range;

[0068] target temperature module for the minimum ambient temperature T min Marked as the target temperature T C And set the target temperature deviation ΔT;

[0069] The first calculation module is used to calculate the maximum value T of the ambient temperature range Cmax and / or minimum T Cmin with the target temperature T C The temperature deviation ΔT is obtained, and the temperature deviation ΔT is the maximum value T of the ambient temperature range Cmax with the target temperature T C The absolute temperature difference|T Cmax -T C |or the minimum value T of the ambient temperature ...

Example Embodiment

[0078] Implementation Case Three

[0079] like figure 2 As shown, a heat pump unit, a compressor 1, a four-way reversing valve 2, an outdoor heat exchanger 3, a gas-liquid separator 4, a flash evaporator 5, a first electronic expansion valve 6, an indoor heat exchanger 7, and an outdoor environment Temperature sensing package 8, solenoid valve 9, unit control device 10, second electronic expansion valve 11 and communication line 12, the compressor 1 is divided into three branches through the four-way reversing valve 2, and the first branch is connected in sequence An outdoor heat exchanger 3, a second electronic expansion valve 11, and a flash evaporator 5, the flash evaporator 5 is connected to the compressor 1 through a solenoid valve 9; the second branch is connected to the indoor heat exchanger 7, the first electronic expansion valve 6 into the flash evaporator 5; the third branch returns to the compressor 1 through the gas-liquid separator 4.

[0080] The outdoor envir...

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Abstract

A natural wind recognition control method of a heat pump unit comprises the steps that when the unit runs in a refrigeration mode, the minimum environment temperature Tmin of an outdoor unit in a time period delta t1 is obtained and marked as the target temperature TC; the environment temperature interval of the outdoor unit in the time period delta t2 is obtained, and the temperature deviation delta T is calculated according to the maximum value TCmax and/or the minimum value TCmin and the target temperature TC; whether the temperature deviation delta T is larger than the target temperature deviation delta Ttarget or not is judged; and when delta T is larger than or equal to delta T target, the judgment result is that the unit is influenced by natural wind, and when the number of abnormal times in the target period time reaches the target number of abnormal times, the unit is judged to be in a natural wind influence state, a warning signal is sent to a user, the user is reminded, safety early warning is conducted, and the reliability of the unit is improved. The outdoor environment temperature changes before and after are periodically compared according to the set time interval, whether the unit is in the natural wind influence state or not is judged, interference of external natural wind on operation of the unit is completely eradicated, and the influence of the natural wind on the unit can be avoided.

Description

technical field [0001] The invention relates to the field of identification and control of natural wind by a heat pump unit, in particular to a method and system for identification and control of natural wind by a heat pump unit and a storage medium. Background technique [0002] Air source heat pump units are more and more widely used in the heat pump market due to their good environmental protection effect and high energy saving performance. When installing in an area with strong external natural wind, it is necessary to consider avoiding the local seasonal wind direction to prevent natural wind from interfering with the operation of the unit. However, in actual engineering, due to various subjective and objective factors, it cannot be completely avoided. As a result, the unit is disturbed by natural wind for a long time, and the operation reliability is affected. Therefore, how to accurately identify the existence of natural wind through the operating parameters of the u...

Claims

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Application Information

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IPC IPC(8): F24F11/30F24F11/61F24F11/52F24F11/63F24F110/12
CPCF24F11/30F24F11/61F24F11/52F24F11/63F24F2110/12Y02B30/70
Inventor 尚瑞李思佳陈志杰李天阳
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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