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Anti-freezing control method of air conditioner

A control method and air conditioner technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve problems affecting the normal operation of the unit, water leakage from the water receiving tray, and reducing the water storage volume of the water receiving tray, etc.

Active Publication Date: 2020-10-20
NANJING TICA AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the various structures of the indoor unit, when the water storage height of the water receiving tray is higher than the surface of the heat exchanger, the frost will turn into ice cubes and cannot be weathered through the indoor circulation. Cause water leakage from the water receiving tray, affecting the normal operation of the unit

Method used

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  • Anti-freezing control method of air conditioner

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] A unitary air conditioner includes a refrigerant circulation circuit composed of a compressor, a four-way valve, an outdoor heat exchanger, a throttling component, an indoor heat exchanger and a gas-liquid separator. The indoor heat exchanger is provided with a temperature sensor capable of detecting the temperature Ti of the evaporator coil.

[0033] like figure 1 As shown, the antifreeze control method of the above-mentioned air conditioner comprises the following steps:

[0034] 1) The unit is in cooling operation, the compressor is turned on, the four-way valve is closed, the outdoor fan is turned on, and the indoor fan is turned on; at the same time, the initial value of the N parameter is set to 0;

[0035] 2) Detect Ti parameter;

[0036] 3) If Ti ≤ T1, and the duration ≥ t1, go to step 4); otherwise, go to step 1); where: T1 enters the...

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Abstract

The invention relates to an anti-freezing control method of an air conditioner. The anti-freezing control method of the air conditioner is applied to a unit type air conditioner. The air conditioner comprises a refrigerant circulation loop formed by a compressor, a four-way valve, an outdoor heat exchanger, a throttling component, an indoor heat exchanger and a gas-liquid separator; and a temperature sensor is arranged on the indoor heat exchanger and can detect the temperature Ti of an evaporator coil pipe. When a unit is cooled at a low temperature, the unit is adjusted to enter a weatheringfrost and hot gas defrosting program according to the Ti and the duration time, so that the icing phenomenon of the unit is avoided, and the running stability and reliability of the unit are improved.

Description

technical field [0001] The invention relates to an air conditioner control method, in particular to an antifreeze control method, in particular to an air conditioner antifreeze control method. Background technique [0002] More and more places need low-temperature refrigeration to maintain low indoor ambient temperature, such as computer rooms, drug storage warehouses, chilled seafood supermarkets, laboratories, processing workshops with heat sources, etc. The outdoor ambient temperature used in these places ranges from 16°C to -15°C ℃, the indoor ambient temperature is generally about 16 ℃ ~ 25 ℃. [0003] Cooling operation in a low-temperature environment, the outdoor ambient temperature is too low to reduce the condensation temperature of the air conditioning system, and the evaporation temperature decreases. Stop the compressor to prevent the accumulation of frost in the indoor heat exchanger, and use the indoor circulating air to melt the frost. After defrosting, conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/43F24F11/61F24F11/64F24F11/84F24F11/86F24F11/72F24F11/871F24F11/88F24F140/20
CPCF24F11/43F24F11/61F24F11/64F24F11/72F24F11/84F24F11/86F24F11/871F24F11/88F24F2140/20
Inventor 谭秋晖杨亚华徐来福任奎张泽隆樊军鹏
Owner NANJING TICA AIR CONDITIONING CO LTD