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Compressor guide vane opening control method, device and air conditioning unit

A guide vane opening and control device technology, which is applied in the field of compressors, can solve problems such as low adjustment accuracy and lag in guide vane opening adjustment, and achieve the effects of avoiding surge and solving lagging and inaccurate adjustments

Active Publication Date: 2021-09-21
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a compressor guide vane opening control method, device, and air-conditioning unit to solve the problems in the prior art that the guide vane opening adjustment lags behind and the adjustment accuracy is not high

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  • Compressor guide vane opening control method, device and air conditioning unit
  • Compressor guide vane opening control method, device and air conditioning unit
  • Compressor guide vane opening control method, device and air conditioning unit

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Embodiments of the present invention provide a solution for controlling the opening of guide vanes, which is mainly aimed at centrifugal compressors, such as applied to chillers. like figure 1 As shown, the chiller includes: a compressor 10 , an evaporator 20 , a condenser 30 and a throttling device 40 . The evaporator 20 is provided with chilled incoming water 21 and chilled outgoing water 22 . The condenser 30 is provided wit...

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Abstract

The invention discloses a method and a device for controlling the opening degree of a guide vane of a compressor and an air conditioning unit. The method includes: determining the impeller inlet speed of the compressor according to the target cooling capacity; determining the target opening according to the relationship between the impeller inlet speed and the guide vane opening; and adjusting the guide vane opening to the target opening. The invention determines the required impeller inlet speed according to the target cooling capacity, and then calculates the target opening of the guide vane in real time according to the relationship between the guide vane opening and the airflow speed, so that the guide vane can be adjusted quickly and accurately in real time according to the target opening. , effectively solve the problem of lag and inaccurate adjustment of the guide vane when the working conditions change, and can avoid surge and ensure the efficient and stable operation of the unit.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a method and device for controlling the opening of compressor guide vanes and an air conditioner unit. Background technique [0002] The inlet of the centrifugal compressor is generally equipped with guide vanes (referred to as guide vanes for short). The opening of the guide vanes is different, and the flow rate of gas entering the compressor is also different. At present, the opening of the guide vane is adjusted by the guide vane adjustment mechanism installed at the compressor inlet to control the suction flow, and the variable frequency centrifuge is adjusted through the guide vane adjustment mechanism and the rotational speed to achieve the purpose of flow regulation. [0003] At present, there are several methods to adjust the opening of the guide vane: [0004] (1) By adding angular displacement sensors, guide vane adjustment mechanisms and corresponding programs in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/46F04D29/44F04D27/02F04D27/00
CPCF04D27/001F04D27/002F04D27/0246F04D29/444F04D29/462
Inventor 潘翠张治平刘华周宇李宏波
Owner GREE ELECTRIC APPLIANCES INC
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