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Control method of magnetic suspension air conditioning unit

A control method and technology of air-conditioning units, applied in the direction of mechanical equipment, etc., can solve the problems of slow pressure relief speed, reduce the risk of bearing damage, have obvious pressure relief effects, and improve safety and reliability

Pending Publication Date: 2021-07-20
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problem of the slow pressure relief speed of the existing control method of the maglev air-conditioning unit, the present invention provides a control method of the maglev air-conditioning unit

Method used

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  • Control method of magnetic suspension air conditioning unit
  • Control method of magnetic suspension air conditioning unit
  • Control method of magnetic suspension air conditioning unit

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Embodiment Construction

[0034] 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.

[0035]It should be noted that in the description of the present application, terms such as "first" and "second" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0036] In order to facilitate the understanding of the control method of the magnetic levitation air conditioning unit of the present invention, the following combination figure 1 Taking the water-cooled magnetic levitation air-conditioning unit as an example, the main structure and working principle of this type of air-conditioning unit are firstly explained in detail. in, figure 1 It is a structural schematic diag...

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Abstract

The invention relates to the technical field of air conditioners, and particularly provides a control method of a magnetic suspension air conditioning unit. The technical problem of low pressure relief speed of an existing control method is solved. A pressure relief bypass of the magnetic suspension air conditioning unit comprises a pressure relief switch valve and a pressure relief throttling element which are arranged in parallel. The control method comprises the steps that when the unit meets the shutdown condition, the current pressure ratio of a compressor is obtained; the current pressure ratio is compared with an allowable shutdown pressure ratio threshold value; and according to the comparison result, the compressor is selectively and directly controlled to stop or the pressure relief switch valve and the pressure relief throttling element are opened to adjust the pressure ratio until the compressor stop condition is met. According to the magnetic suspension air conditioning unit, the throttling and pressure reducing functions of the throttling element can be utilized, the switching value characteristic of the pressure relief switch valve can be utilized, the instantaneous pressure relief effect is obvious after the pressure relief switch valve is switched on, the pressure ratio rapidly reaches the allowable shutdown pressure ratio threshold value of the compressor, which is particularly important for emergency failure unloading shutdown, and the risk of bearing damage of the magnetic suspension centrifugal compressor is reduced.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and specifically provides a control method for a magnetic levitation air conditioning unit. Background technique [0002] With the continuous development of science and technology, magnetic levitation air conditioning unit has become a very common air conditioning unit. [0003] The core technology of the magnetic levitation air conditioning unit lies in the magnetic levitation centrifugal compressor used in this unit. The magnetic levitation centrifugal compressor usually includes a rotating shaft, magnetic bearings, backup bearings and positioning sensors. The rotating shaft can be suspended above the magnetic bearing and generate high-speed rotation to improve Gas flow rate; when the rotating shaft stops rotating, the rotating shaft can fall onto the bearing, so that the bearing can support the stopped rotating shaft; the positioning sensor can detect the position of the rotating shaf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/30F24F11/70F24F11/64F24F11/61F25B41/20F25B41/30F25B41/40
CPCF24F11/30F24F11/70F24F11/64F24F11/61
Inventor 王书森张捷王铁伟邓善营
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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