Adjustment method for corresponding rotational speeds of gears of air blower of automobile air conditioner

An automobile air conditioner and adjustment method technology, which is applied in the direction of mechanical equipment, machine/engine, pump control, etc., can solve the problems affecting the NVH characteristics of automobiles, and achieve the effect of improving NVH characteristics and avoiding resonance

Active Publication Date: 2019-12-17
湖南猎豹汽车股份有限公司
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Problems solved by technology

The above process will affect the NVH characteristics of the car

Method used

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  • Adjustment method for corresponding rotational speeds of gears of air blower of automobile air conditioner
  • Adjustment method for corresponding rotational speeds of gears of air blower of automobile air conditioner
  • Adjustment method for corresponding rotational speeds of gears of air blower of automobile air conditioner

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Embodiment Construction

[0025] The content and advantages of the present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings, but the specific embodiments of the present invention are not limited thereto.

[0026] A method for adjusting the speed corresponding to the gear position of a blower of an automobile air conditioner, specifically comprising the following steps:

[0027] Step 1. Preliminarily determine the maximum speed r of the blower according to the selection of the air conditioner, refrigeration and design air volume and other factors. max , the minimum speed r min And the number m of blower stalls, the minimum speed r in this embodiment min and the maximum speed r max 1200r / min and 4200r / min respectively, with 7 gears to choose from;

[0028] Step 2. Preliminarily select the rotation speed corresponding to each gear of the blower by means of equal division, and use i to represent the gear, and the corresponding speed o...

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Abstract

The invention relates to the field of optimization for automobile NVH, and specifically discloses an adjustment method for the corresponding rotational speeds of gears of an air blower of an automobile air conditioner. The adjustment method for the corresponding rotational speeds of the gears of the air blower of the automobile air conditioner comprises the following steps: determining the maximumrotational speed rmax and the minimum rotational speed rmin of the air blower, and the number m of the gears of the air blower at first; preliminarily selecting the corresponding rotational speed ofeach gear of the air blower; determining a selection interval of corresponding new rotational speeds of the gears, obtaining a near-field noise waterfall plot, and measuring the total noise value of the air blower; conforming the two main orders of a motor, and selecting the noise values of the two main orders by virtue of software; and combining the selected noise values and the total noise valueof the air blower into the same graph, and determining the corresponding new rotational speeds of the gears according to the results of the overall noise of the air blower and the noises of the mainorders. By virtue of the abovementioned method, the matching between the gears and the rotational speeds of the air blower can be optimized; and on the premise of not adding other requirements, the parotic noises of a driver and passengers are effectively and reasonably reduced, and the NVH characteristic of an automobile is improved.

Description

technical field [0001] The invention relates to the field of optimization of automobile NVH, and specifically discloses a method for adjusting the speed corresponding to the gear position of a blower of an automobile air conditioner. [0002] technical background [0003] The noise of the air conditioning system mainly comes from the main components such as the compressor, the blower, the air duct, and the cooling fan. The noise can be mainly divided into motor noise, mechanical noise, airflow noise and abnormal noise. The air volume is mainly controlled by the blower. The motor noise accounts for a large proportion of the noise, and it is difficult to improve. The motor noise is mostly high-frequency whistling, which comes from the order noise of the motor. The unpleasantness of the noise is closely related to the size of the order noise. . [0004] The air volume distribution of the traditional air conditioning system basically considers the requirements of low-grade air v...

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Application Information

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IPC IPC(8): F04D27/00
CPCF04D27/001F04D27/004
Inventor 刘小华梁进利莫崇卫藤瑞品王元林
Owner 湖南猎豹汽车股份有限公司
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