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Control method of air-conditioning unit and air-conditioning unit

A technology of an air-conditioning unit and a control method, which is applied to the control of air-conditioning units and the field of air-conditioning units, can solve problems such as compressor surge, compressor bearing failure, affecting compressor stability, etc., and achieve the effect of reducing communication lines.

Active Publication Date: 2022-05-20
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
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Problems solved by technology

[0006] In order to solve the problem that during the operation of the existing air conditioning units, when the load of the indoor unit fluctuates suddenly, the compressor "surges" and affects the stability of the compressor operation and even causes the bearing failure of the compressor. The present invention provides A control method of an air-conditioning unit and the air-conditioning unit

Method used

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  • Control method of air-conditioning unit and air-conditioning unit
  • Control method of air-conditioning unit and air-conditioning unit

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Embodiment approach

[0062] Therefore, as a preferred implementation of the above-mentioned control method provided in this embodiment, the control method further includes: if the actual inspiratory pressure difference between the actual inspiratory pressure value and the maximum reasonable inspiratory pressure value is less than the first When the suction pressure difference is preset, the setting interval time after the load balance valve 12 reduces the set adjustment range next time is longer than the set interval time after the load balance valve 12 reduces the set adjustment range this time.

[0063] As a preferred implementation of the above-mentioned control method provided in this embodiment, the determination rule of the reasonable inhalation pressure range is: the greater the pressure ratio between the actual exhaust pressure value and the actual inhalation pressure value, the greater the reasonable inhalation pressure range. The greater the difference between the maximum reasonable inspi...

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Abstract

The invention belongs to the technical field of air conditioning, and in particular relates to a control method of an air conditioning unit and the air conditioning unit. The invention aims to solve the problem that during the operation of the air conditioner unit, when the load of the indoor unit fluctuates suddenly, the "surge" phenomenon occurs when the compressor cannot be loaded or unloaded in time, which affects the stability of the compressor operation and even causes the compressor bearing to fail. For this purpose, the present invention judges the actual suction pressure value of the compressor, the actual discharge pressure value of the compressor and the actual bearing offset, and then based on the judgment result, the air compressor installed between the suction end and the discharge end of the compressor The load balancing valve between them is selectively controlled while cooperating with the compressor energy regulation. In this way, according to the load change of the indoor unit, the method is used to adjust the load balancing valve and the energy adjustment of the compressor to adaptively adjust the operating state of the compressor, so as to avoid the "surge" phenomenon of the compressor and affect the compressor's operation. Stability has even caused problems with compressor bearing failure.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a control method of an air conditioning unit and the air conditioning unit. Background technique [0002] The cooling-only air-conditioning unit is an air-conditioning unit that can only be used for refrigeration, and it is widely used in the edible fungus breeding industry and cold storage and other fields. [0003] In the refrigerant circulation route of the cooling-only air conditioner unit, the exhaust port of the compressor communicates with the first end of the outdoor condenser, and the second end of the outdoor condenser communicates with the first end of the user-side evaporator through a throttling device. The second end of the user-side evaporator communicates with the suction port of the compressor. During the working process of the cooling-only air conditioner unit, through the repeated compression of the refrigerant by the compressor and the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/54F24F11/64F24F11/86F24F11/84F24F11/61F24F140/12
CPCF24F11/54F24F11/64F24F11/86F24F11/84F24F11/61F24F2140/12
Inventor 王书森张捷王铁伟邓善营
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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