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Control method for air-cooled maglev unit

A control method and magnetic levitation technology, applied in the control input related to air characteristics, space heating and ventilation control input, application, etc., can solve the problem of unit cost increase, unit failure shutdown, multiple fixed-frequency fans cannot be flexibly adjusted, etc. problems, to achieve the effect of avoiding downtime, low cost, stable and reliable operation

Active Publication Date: 2021-12-28
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the existing air-cooled magnetic levitation unit adopts the structure of multiple fixed-frequency fans, which cannot flexibly adjust the pressure ratio of the unit, it is easy to cause the unit to fail and shut down, and the use of multiple variable-frequency fans will make the unit’s For the problem of greatly increased cost, the present invention provides a control method for air-cooled maglev units. The air-cooled maglev unit includes a plurality of fixed-frequency fans. The control method includes: in the start-up phase of the unit, first turn on some fixed-frequency fans ;Get the pressure ratio of the unit; according to the pressure ratio of the unit, selectively turn on the fixed-frequency fan that is not running

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Embodiment Construction

[0021] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0022] It should be noted that, in the description of the present invention, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance.

[0023] Based on the problems pointed out by the background technology that the existing air-cooled maglev unit adopts the structure of multiple fixed-frequency fans, the pressure ratio of the unit cannot be flexibly adjusted, which will easily lead to the failure of the unit and the use of multiple variable-frequency fans will greatly increase the cost of the unit. The invention provides a control method for an air-cooled mag...

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Abstract

The invention belongs to the technical field of air-conditioning units and aims to solve the problem that the existing air-cooled magnetic levitation unit adopts the structure of multiple fixed-frequency fans, which cannot flexibly adjust the pressure ratio of the unit, which easily leads to the failure of the unit and the use of multiple variable-frequency fans will increase the cost of the unit. problem of increasing magnitude. Therefore, the present invention provides a control method for air-cooled maglev units, the control method includes: in the start-up stage of the unit, first turn on part of the fixed-frequency fans; obtain the pressure ratio of the unit; according to the pressure ratio of the unit, select Temporarily turn on the non-running fixed-frequency fan. The invention can make the unit run more stably, especially in low temperature environment, and can avoid the failure of the unit due to too small pressure ratio, and compared with the air-cooled maglev unit with multiple frequency conversion fans, the air-cooled The cost of the unit is lower, and the later maintenance cost is also lower.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning units, and specifically provides a control method for an air-cooled magnetic levitation unit. Background technique [0002] The current air-cooled maglev central air-conditioning unit generally adopts the structure of multiple fixed-frequency fans or multiple variable-frequency fans. When multiple fixed-frequency fans are used, one control method is to start and stop all the fixed-frequency fans at the same time, which will When the unit is running under the condition of low ambient temperature, the pressure ratio is prone to be too small, and the unit cannot be adjusted in time, resulting in the shutdown of the unit. Another control method is to divide all fixed-frequency fans into two groups, and then The pressure ratio can be adjusted by turning off a group of fans during the start-up phase. However, the control accuracy of this control method is low, and it may cause large fluctuation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F110/00
CPCF24F11/64F24F2110/00
Inventor 贺雪飞胡乐举王锋
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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