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Air conditioner heating and defrosting control method and device and air conditioner

A heating defrosting and control method technology, applied in the field of devices, air conditioners, and air conditioner heating and defrosting control methods, can solve problems such as easy frosting and affect user comfort, and achieve the effect of avoiding energy waste

Active Publication Date: 2020-03-31
NINGBO AUX ELECTRIC
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Problems solved by technology

At present, the existing defrosting control method is usually shutdown defrosting, that is, through the target condensing temperature, the frequency is corrected and controlled, and for the lower working conditions of the external environment, after the compressor frequency is raised to the highest, it is easy to frost. It may cause the air conditioner to stop and defrost repeatedly and periodically, which seriously affects the comfort of users.

Method used

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  • Air conditioner heating and defrosting control method and device and air conditioner
  • Air conditioner heating and defrosting control method and device and air conditioner
  • Air conditioner heating and defrosting control method and device and air conditioner

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Embodiment Construction

[0037] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In addition, if there are descriptions related to "first", "second", etc. below, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance nature or implicitly indicate the number of technical features indicated. In addition, the terms "comprising", "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the explicitly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

[0039] Generally speaking, when the air conditioner is in the heating condition, the coil of the o...

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Abstract

The invention provides an air conditioner heating and defrosting control method and device and an air conditioner, which relate to the technical field of air conditioners. The control method comprisesthe steps: the air conditioner is determined to operate in a heating mode, and the outdoor environment temperature, the air outlet temperature and the outer coil temperature are obtained; whether a condition of entering a bypass defrosting mode is met or not is judged according to the outdoor environment temperature, the air outlet temperature and the outer coil temperature; and if the conditionof entering the bypass defrosting mode is met, a bypass control valve is opened, the bypass defrosting mode is started to prevent an outdoor heat exchanger from frosting, wherein the bypass control valve and a throttling assembly of the air conditioner are arranged in parallel. By arranging the bypass loop, a high-temperature refrigerant and a throttled low-temperature refrigerant are mixed, the temperature of the refrigerant entering the outdoor heat exchanger is increased step by step, the temperature of return air is increased step by step, a frost layer is melted step by step, and defrosting work is carried out under the condition that the compressor is not shut down.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to an air conditioner heating and defrosting control method and device and an air conditioner. Background technique [0002] The frosting and defrosting problem of air source heat pump system is a key technical problem of air conditioning, which has a significant impact on heating performance and comfort. For air conditioners operating in humid and cold areas, frosting often occurs on the outdoor unit. In order to ensure the continuous and efficient operation of the air conditioner, periodic defrosting is required. At present, the existing defrosting control method is usually shutdown defrosting, that is, through the target condensing temperature, the frequency is corrected and controlled, and for the lower working conditions of the external environment, after the compressor frequency is raised to the highest, it is easy to frost. It may cause the air conditioner t...

Claims

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Application Information

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IPC IPC(8): F24F11/41F24F11/64F24F11/65F24F11/84F24F11/88F24F110/10F24F140/12F24F140/20
CPCF24F11/41F24F11/64F24F11/65F24F11/84F24F11/88F24F2110/10F24F2140/12F24F2140/20
Inventor 李海利左泽明张中强田涛杨明登来盼盼
Owner NINGBO AUX ELECTRIC
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