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A control method for preventing frosting of heat exchanger in indoor unit of radiant air conditioner

A technology for an indoor unit of an air conditioner and a control method, which is applied in the field of radiant air conditioners, can solve problems such as inability to prevent frosting of heat exchangers, and achieve the effects of good applicability, avoiding damage and preventing frosting.

Active Publication Date: 2019-05-31
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In view of this, an object of the present invention is to propose a control method for preventing frosting of heat exchangers in indoor units of radiant air conditioners, so as to solve the problem that existing methods for preventing frosting of heat exchangers of air conditioners cannot prevent the indoor units of radiant air conditioners from frosting. The problem of frosting in the heat exchanger

Method used

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  • A control method for preventing frosting of heat exchanger in indoor unit of radiant air conditioner
  • A control method for preventing frosting of heat exchanger in indoor unit of radiant air conditioner
  • A control method for preventing frosting of heat exchanger in indoor unit of radiant air conditioner

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Embodiment Construction

[0020] The following description and drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. 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. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.

[0021] Before specifically introducing the embodiments of the present invention, some technical...

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Abstract

The invention relates to a control method for preventing a heat exchanger in an indoor unit of a radiation type air conditioner from being frosted. The control method comprises the steps: a, keeping the operating frequency of a compressor invariable; b, detecting the surface temperature of the heat exchanger of the indoor unit of the radiation type air conditioner in real time; and c, adjusting the openness of an electronic expansion valve in the radiation type air conditioner in real time according to the detection result, wherein the surface temperature of the heat exchanger is constantly higher than the ice point temperature. According to the control method, the operating frequency of the compressor is kept stable, so that the temperature of indoor air is not affected; on the premise that the compressor operates in the stable frequency, the surface temperature of the heat exchanger in the indoor unit is adjusted by changing the openness of an electronic expansion valve. Experimental detection verifies that with adoption of the method, the surface temperature of the heat exchanger is constantly higher than the ice point temperature, so that the phenomenon that the heat exchanger in the indoor unit is frosted is effectively prevented, the heat exchanger is better prevented from being damaged, the service life of the indoor unit is prolonged, and the applicability is better.

Description

technical field [0001] The invention belongs to the technical field of radiant air conditioners, and in particular relates to a control method for preventing frosting of heat exchangers in indoor units of radiant air conditioners. Background technique [0002] During the cooling process of the air conditioner in summer, when the cooling temperature is too low, it is easy to cause frost and ice on the heat exchanger in the indoor unit, causing damage to the heat exchanger. Ordinary air-conditioning evaporators are small and concentrated, and the evaporation temperature of the heat exchanger is relatively uniform under the action of the fan. By detecting the temperature of the coil and adjusting the frequency of the compressor, the purpose of preventing the heat exchanger from frosting and freezing can be achieved; but This control method is only suitable for traditional air conditioners with a wide operating frequency range; it is not suitable for radiant air conditioners, ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F24F11/43F24F11/64
CPCF24F11/30F24F11/43F24F11/52
Inventor 李波付裕任志强张明杰许文明
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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