Air conditioning control method and device in heating mode

Abstract

The invention provides a heating-mode air conditioner control method and device. The method comprises the steps that when an air conditioner is in a heating mode, whether the temperature of an outer tube of the air conditioner drops to an early warning temperature or not is detected; and if the temperature of the outer tube of the air conditioner drops to the early warning temperature, the opening degree of an electronic expansion valve connected with an evaporator in the air conditioner is adjusted. The heating-mode air conditioner control method and device solve the technical problem that in the prior art, an air conditioner cannot conduct long-time continuous heating operation under a low-temperature condition, thereby achieving the technical effect that the continuous heating operation time of the air conditioner under the low-temperature condition is prolonged effectively.

Description

technical field

[0001] The present invention relates to the technical field of air conditioning control, in particular to an air conditioning control method and device in a heating mode. Background technique

[0002] When the air conditioner uses the heat pump cycle heating, the gas Freon will be pressurized by the compressor to become a high-temperature and high-pressure gas, and then enter the heat exchanger of the indoor unit (in this case, the condenser) through the switching of the four-way valve, and condense and liquefy to release heat. It will become a liquid, and at the same time, the indoor air will be heated, so as to achieve the ultimate goal of increasing the indoor temperature. Then, the liquid Freon is decompressed by the throttling device, enters the heat exchanger of the outdoor unit (at this time, the evaporator), evaporates and gasifies, absorbs heat, and becomes a gas, and at the same time absorbs the heat of the outdoor air, and then enters the compresse...

Examples

Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0029] Considering that the split frequency inverter is under ultra-low temperature heating conditions, there will be frosting on the external unit, which will cause the evaporation temperature of the external unit to decrease and enter the defrosting mode earlier. There are two problems in this way:

[0030] 1) The frosting of the external unit is faster, which affects the heat transfer;

[0031] 2) The time to enter the defrost is too fast, which affects the comfort.

[0032] However, it is obviously unreasonable to prolong the time before entering defrosting simply by reducing the tube tem...

technical field

[0001] The present invention relates to the technical field of air conditioning control, in particular to an air conditioning control method and device in a heating mode. Background technique

[0002] When the air conditioner uses the heat pump cycle heating, the gas Freon will be pressurized by the compressor to become a high-temperature and high-pressure gas, and then enter the heat exchanger of the indoor unit (in this case, the condenser) through the switching of the four-way valve, and condense and liquefy to release heat. It will become a liquid, and at the same time, the indoor air will be heated, so as to achieve the ultimate goal of increasing the indoor temperature. Then, the liquid Freon is decompressed by the throttling device, enters the heat exchanger of the outdoor unit (at this time, the evaporator), evaporates and gasifies, absorbs heat, and becomes a gas, and at the same time absorbs the heat of the outdoor air, and then enters the compresse...

Examples

Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0029] Considering that the split frequency inverter is under ultra-low temperature heating conditions, there will be frosting on the external unit, which will cause the evaporation temperature of the external unit to decrease and enter the defrosting mode earlier. There are two problems in this way:

[0030] 1) The frosting of the external unit is faster, which affects the heat transfer;

[0031] 2) The time to enter the defrost is too fast, which affects the comfort.

[0032] However, it is obviously unreasonable to prolong the time before entering defrosting simply by reducing the tube tem...

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