Icing detection method and device for air conditioner indoor unit

A detection method and detection device technology, applied in the direction of mechanical equipment, heating and ventilation safety systems, heating and ventilation control systems, etc., can solve problems such as easy failures, and achieve the effect of preventing freezing damage

Active Publication Date: 2018-07-24
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Abstract
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Problems solved by technology

[0004] The invention provides a method and device for detecting icing of an internal unit, aiming to solve the problem that t

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  • Icing detection method and device for air conditioner indoor unit
  • Icing detection method and device for air conditioner indoor unit
  • Icing detection method and device for air conditioner indoor unit

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Embodiment Construction

[0049]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 icing detection method and device for an air conditioner indoor unit, and belongs to the technical field of air conditioners. The icing detection method comprises the stepsthat the outdoor environment temperature and the suction temperature of a compressor when an air conditioner operates in a refrigeration mode or a dehumidification mode are acquired; and when the outdoor environment temperature and the suction temperature meet preset icing judgment conditions, the air conditioner is triggered to enter an icing protection mode, wherein the icing conditions refer tothat the outdoor environment temperature is higher than or equal to a first outdoor temperature threshold value and the suction temperature is smaller than or equal to a first suction temperature threshold value. According to the icing detection method for the air conditioner indoor unit, whether or not the indoor unit has the icing tendency can be judged according to outdoor unit relevant parameters such as the outdoor environment temperature and the suction temperature of the compressor, and corresponding protection is triggered in time, so that the problem of detection failures caused whenan indoor unit coil is affected by the factors such as refrigerant deficiency or indoor distribution variations is avoided, and the phenomenon that the air conditioner indoor unit is damaged due to icing is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for detecting icing of an air conditioner inner unit. Background technique [0002] In high temperature weather in summer, out of comfort considerations, air conditioner users generally set the cooling temperature of the air conditioner at a lower value, so that the indoor environment can be kept at a relatively cool temperature; at this time, enter the air conditioner The temperature of the refrigerant is generally low. The heat exchanger of the internal unit is affected by the temperature of the low-temperature refrigerant, and the outer surface and fins of the heat exchanger often have the problem of icing. The frost condensed on the heat exchanger will reduce the cooling effect of the air conditioner and affect Normal use of the air conditioner. When the air conditioner is running in dehumidification mode, it will often cause icing problems for s...

Claims

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Application Information

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IPC IPC(8): F24F11/43F24F11/64F24F11/61F24F110/12
Inventor 白骏
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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