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An air conditioner and its anti-freezing control method

A control method and anti-freezing technology, applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc., can solve the overall layout restrictions, limited to the middle coil of the indoor heat exchanger, and the heat load of the air conditioner major issues

Active Publication Date: 2021-10-29
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Application Information

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Problems solved by technology

However, the main function of the temperature sensor installed on the coil of the air conditioner is not limited to freezing temperature monitoring in cooling or dehumidification mode, it also needs to be used to monitor the temperature of the coil when the air conditioner is running in heating mode, so as to avoid the heat exchanger inside the air conditioner In the heating mode, the heat load of the air conditioner is too high due to the high temperature. The limitation of these two functions makes the installation position of the temperature sensor on the air conditioner need to be limited to the middle coil of the indoor heat exchanger, which is also a problem. Restricts the overall layout inside the air conditioner indoor unit

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  • An air conditioner and its anti-freezing control method
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Embodiment Construction

[0042]The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. Herein, various embodiments may be referred to individually or collectively by the term "invention", which is for convenience only and is not intended to automatically limit the scope of this application if in fact more than one invention is disclosed. A single invention or inventive concept. Herein, relational terms such ...

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Abstract

The invention provides an air conditioner and its anti-freezing control method, belonging to the technical field of air conditioners. The liquid inlet of the indoor heat exchanger of the air conditioner is provided with a sensor for detecting the temperature of the refrigerant inlet pipe; the control method includes: when the current working mode of the air conditioner is the cooling mode, the indoor exchange rate of the air conditioner is determined according to the corrected temperature of the refrigerant inlet pipe; Whether the heater has a freezing problem; in response to the freezing problem of the indoor heat exchanger of the air conditioner, the air conditioner is controlled to switch to the anti-freezing mode; when the current working mode of the air conditioner is the heating mode, the load protection operation is performed on the air conditioner according to the temperature in the cold. The air conditioner and its anti-freezing control method provided by the present invention judge the freezing problem of the air conditioner by using the detected temperature of the refrigerant inlet pipe; at the same time, in the heating mode, the load protection operation of the air conditioner can also be performed according to the determined cooling temperature.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and its anti-freezing control method. Background technique [0002] When the air conditioner is in cooling or dehumidification operation, due to the temperature angle of the refrigerant entering the indoor heat exchanger of the indoor unit, the outer surface of the indoor heat exchanger is always at a low temperature. When the indoor air flows through the indoor heat exchanger, The water vapor in the air is easy to condense into dew or even frost on the indoor heat exchanger, causing the indoor heat exchanger of the indoor unit to freeze, which in turn affects the cooling effect of the air conditioner, making its cooling or dehumidification capacity weaker and weaker. [0003] In view of the freezing phenomenon of the indoor heat exchanger of the air conditioner, the anti-freezing implementation method mainly adopted by the existing air conditioner is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/43F24F11/64F24F11/65F24F140/20F24F140/50
CPCF24F11/43F24F11/64F24F11/65F24F2140/20F24F2140/50
Inventor 许文明
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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