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Heat pump air conditioner frosting judgment method, computer readable storage medium and air conditioner

A technology of heat pump air conditioner and computer program, which is applied in the field of air conditioner, can solve the problems of no-frost defrost layer, misjudgment or missed judgment, accumulation, etc., and achieve the effect of effective detection and prevention of missed judgment and misjudgment

Active Publication Date: 2020-04-10
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air conditioners currently on the market generally use the outdoor ambient temperature and the outdoor coil temperature to jointly judge whether frost has formed. However, due to the complexity of ambient temperature and humidity, this judgment method often leads to misjudgments or missed judgments, resulting in no frost. The situation of defrosting or accumulation of frost layer, therefore, a new and more reliable method is needed to judge the frosting problem of the external machine

Method used

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  • Heat pump air conditioner frosting judgment method, computer readable storage medium and air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: A method for judging frosting of a heat pump air conditioner.

[0018] Such as figure 1 As shown, a method for judging frosting of a heat pump air conditioner, the specific steps are as follows:

[0019] Calculate or test the current In of the external fan in normal operation in advance, and the current value when frosting reaches a certain level, calculate the difference △I between the two, and input it into the control module.

[0020] First of all, after turning on the heating operation time t1, start to judge frosting, at this time continue to detect the external fan motor current I, and calculate △I=I-In, when the continuous Xmin satisfies △I>△I 结霜判断 , T 外管 <0°C, it is considered that the outdoor heat exchanger has frosted, and it enters the defrosting state at this time.

[0021] Although this control is more reliable than a single temperature judgment, due to the uncontrollable external environment, it cannot be ruled out that the heat exchanger ...

Embodiment 2

[0029] Embodiment 2: a computer-readable storage medium.

[0030] A computer-readable storage medium is used for storing a computer program, and when the computer program is invoked by a processor, the method for judging frosting of a heat pump air conditioner described in Embodiment 1 is implemented.

Embodiment 3

[0031] Embodiment 3: a kind of air conditioner.

[0032] An air conditioner includes a processor and a memory, the memory is used to store a computer program, and when the computer program is invoked by the processor, the method for judging frosting of the heat pump air conditioner described in Embodiment 1 is realized.

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Abstract

The invention provides a heat pump air conditioner frosting judgment method, a computer readable storage medium and an air conditioner. The method comprises the steps: after the air conditioner is started and enters a heating operation mode, detecting current of a motor of an outer fan in real time to obtain a real-time current value; judging whether frosting conditions are met or not according tothe difference between the real-time current value and the normal operation current value of the motor, and then, judging and analyzing the temperature of an outer pipe; and when the two judgment conditions are met at the same time, judging that an outdoor heat exchanger frosts and enters a defrosting mode. The current value is used as the frosting judgment condition and is not easily influencedby the environment temperature and humidity, so that whether frosting occurs or not can be judged more accurately, and the situations of missed judgment and misjudgment and the like are prevented.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for judging frosting of a heat pump air conditioner, a computer-readable storage medium and an air conditioner. Background technique [0002] During the heating operation of the household split air conditioner, the outdoor unit is prone to frost at low temperature. The system must switch to cooling mode after running for a period of time to defrost the heat exchanger of the outdoor unit to ensure the normal operation of the air conditioner, but how to judge whether the outdoor unit has frost and whether the thickness of the frost layer is the most suitable for defrosting? Timing is a problem. Air conditioners currently on the market generally use the outdoor ambient temperature and the outdoor coil temperature to jointly judge whether frost has formed. However, due to the complexity of ambient temperature and humidity, this judgment method often leads to misjud...

Claims

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Application Information

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IPC IPC(8): F24F11/42F24F11/64F24F11/77F24F11/88F24F140/20
CPCF24F11/42F24F11/64F24F11/77F24F11/88F24F2140/20Y02B30/70
Inventor 范建波黄允棋司徒姗姗张世强罗永前
Owner GREE ELECTRIC APPLIANCES INC
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