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An air conditioner and a control method for preventing freezing

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 problem of insensitivity to trigger anti-freezing protection, and achieve the effect of timely and sensitive anti-freezing protection

Active Publication Date: 2021-08-24
CHONGQING HAIER AIR CONDITIONER CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an air conditioner and its anti-freezing method, aiming to solve the disadvantage of insensitive trigger anti-freezing protection caused by using a single temperature sensor to sense the coil temperature in the existing air conditioner

Method used

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  • An air conditioner and a control method for preventing freezing
  • An air conditioner and a control method for preventing freezing
  • An air conditioner and a control method for preventing freezing

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Embodiment Construction

[0055]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 discloses an air conditioner and its anti-freezing control method, belonging to the technical field of air conditioners. The control method includes: obtaining the temperature of the refrigerant inlet pipe and the temperature of the middle pipe of the heat exchanger in the air-conditioning room; calculating the temperature difference between the refrigerant inlet pipe and the temperature of the middle pipe; The temperature average of the liquid pipe temperature and the middle pipe temperature is used as the reference temperature; in response to the temperature difference being greater than the preset difference threshold, the minimum pipe temperature among the refrigerant inlet pipe temperature and the middle pipe temperature of the indoor heat exchanger is used as the reference temperature; according to the reference Determine whether the temperature meets the preset anti-freezing condition; in response to the reference temperature meeting the preset anti-freezing condition, determine and control the air conditioner to switch to the corresponding anti-freezing mode according to the reference temperature. The air conditioner and its anti-freezing control method provided by the present invention can trigger self-anti-freezing protection in a more timely and sensitive manner compared with the method of judging anti-freezing by a single coil temperature in the prior art.

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 CHONGQING HAIER AIR CONDITIONER CO LTD
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