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

A technology of guide vane opening and control method, applied in the field of compressors, can solve the problems of low adjustment accuracy and lag in guide vane opening adjustment, and achieve the effect of avoiding surge and solving the adjustment lag and inaccuracy.

Active Publication Date: 2020-05-12
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 and device, and air conditioning unit
  • Compressor guide vane opening control method and device, and air conditioning unit
  • Compressor guide vane opening control method and 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. Such as 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 ...

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Abstract

The invention discloses a compressor guide vane opening control method and device and an air conditioning unit. The method comprises the following steps that the impeller inlet velocity of a compressor is determined according to a target refrigerating capacity; target opening is determined according to the relationship between the impeller inlet velocity and guide vane opening; and the opening ofa guide vane is adjusted to the target opening. According to the compressor guide vane opening control method, the required impeller inlet velocity is determined according to the target refrigeratingcapacity, and then the target opening of the guide vane is calculated in real time according to the relationship between the guide vane opening and the airflow velocity, so that the guide vane is quickly and accurately adjusted in real time according to the target opening, the problem that the adjustment of the guide vane is hysteretic and not accurate when the working condition is changed is effectively solved, the surge can be avoided, and the efficient and stable operation of the unit is guaranteed.

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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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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