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Heating control method of fixed-frequency air conditioner under low-temperature working condition

A control method and technology for air conditioners, which can be applied in the fields of high-efficiency regulation technology, climate sustainability, mechanical equipment, etc., and can solve problems such as blowing cold air and poor user experience.

Inactive Publication Date: 2021-01-12
QINGDAO HAIER JIAOZHOU AIR CONDITIONER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the existing fixed-frequency air conditioner will blow cold air under low-temperature conditions, resulting in poor user experience, the present invention provides a fixed-frequency air conditioner under low-temperature conditions A heating control method for an air conditioner, the fixed frequency air conditioner includes a condenser, an evaporator, a fixed frequency compressor and an indoor fan, and the control method includes:

Method used

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  • Heating control method of fixed-frequency air conditioner under low-temperature working condition
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  • Heating control method of fixed-frequency air conditioner under low-temperature working condition

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Embodiment 1

[0044] First refer to figure 1 and figure 2 , to describe Embodiment 1 of the present invention. in, figure 1 It is a flow chart of the heating control method of the fixed frequency air conditioner under the low temperature condition of the present invention, figure 2 It is a logic diagram of Embodiment 1 of the heating control method of the fixed-frequency air conditioner under the low-temperature working condition of the present invention.

[0045] Such as figure 1 As shown, in order to solve the problem that the existing fixed-frequency air conditioner will blow cold air under low temperature conditions, resulting in poor user experience, the fixed-frequency air conditioner of the present invention includes a condenser, an evaporator, a fixed-frequency compressor and an indoor The fan, the heating control method of the fixed frequency air conditioner under the low temperature condition includes:

[0046] S100, detecting the pressure value P of the condenser c ; For ...

Embodiment 2

[0056] refer to figure 1 and image 3 , to describe in detail the second embodiment of the present invention, wherein, image 3 It is a logic diagram of Embodiment 2 of the heating control method of the fixed-frequency air conditioner under the low-temperature working condition of the present invention.

[0057] Such as figure 1 and image 3 As shown, in a possible implementation, "detecting the pressure value P of the condenser c After the step of ", the refrigeration control method also includes: detecting the pressure value P of the evaporator e ;"Based on the pressure value P of the condenser c , the step of controlling the wind speed R of the indoor fan" further includes: based on the pressure value P of the condenser c and the pressure value of the evaporator P e , to control the wind speed R of the indoor fan.

[0058] The advantage of the above arrangement is that the pressure value P of the evaporator is increased e As a judgment condition, by P c and P e S...

Embodiment 3

[0067] Further reference below Figure 4 , the third embodiment of the present invention will be described in detail. in, Figure 4 It is a logic diagram of Embodiment 3 of the heating control method of the fixed-frequency air conditioner under the low-temperature working condition of the present invention.

[0068] The embodiment of the third embodiment is based on the second embodiment, further increasing the P c and P e The total pressure value P m It is one of the judging conditions to make the judgment of the temperature state of the condenser more accurate.

[0069] Specifically, "Based on the condenser pressure value P c and the pressure value of the evaporator P e , the step of controlling the wind speed R of the indoor fan" further includes: based on the pressure value P of the condenser c , the pressure value of the evaporator P e and P c and P e The total pressure value P m , to control the wind speed R of the indoor fan.

[0070] Such as Figure 4 Show...

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Abstract

The invention belongs to the field of air conditioners, and particularly provides a heating control method of a fixed-frequency air conditioner under a low-temperature working condition. According tothe heating control method, the problem that user experience is poor due to the fact that an existing fixed-frequency air conditioner blows cold air under the low-temperature working condition can besolved. The fixed-frequency air conditioner comprises a condenser, an evaporator, a fixed-frequency compressor and an indoor fan. The heating control method of the fixed-frequency air conditioner under the low-temperature working condition comprises the steps of detecting pressure value Pc of the condenser; and controlling air speed R of the indoor fan based on the pressure value Pc of the condenser. According to the heating control method, the pressure value Pc of the condenser can be obtained in real time by the fixed-frequency air conditioner, so that temperature value of the condenser at the moment is judged on the basis of the value, influence of external conditions on detection values is reduced, detection is more accurate, air supply is started more timely, and waiting time for a user is shortened.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and specifically provides a heating control method for a fixed-frequency air conditioner under low-temperature working conditions. Background technique [0002] Due to its low production cost and high cost performance, fixed-frequency air conditioners have also occupied a part of the market in the field of air conditioners for a long time. In conventional fixed-frequency air conditioners, the frequency of the compressor is fixed. When heating under low-temperature conditions, the frequency of the fixed-frequency compressor cannot be adjusted, so the frequency cannot be increased rapidly. After the air conditioner is turned on in winter, the air blown by the indoor fan is cold air, which makes the user feel cold and reduces the user experience. [0003] Correspondingly, there is a need in the art for a new heating control method for fixed-frequency air conditioners under low-temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/89F24F11/77
CPCF24F11/64F24F11/77F24F11/89Y02B30/70
Inventor 李延政刘明牛巧宁王玉洁王录娥周鹏
Owner QINGDAO HAIER JIAOZHOU AIR CONDITIONER
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