Cooling tower and its frequency conversion fan upper limit frequency adjustment method, device, and air conditioning unit

A frequency conversion fan and upper frequency technology, applied in the field of frequency conversion, can solve problems such as poor reliability

Active Publication Date: 2020-06-26
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a cooling tower and its variable frequency fan upper limit frequency adjustment method, device, and air conditioning unit for the problem of poor adjustment reliability of the traditional variable frequency fan frequency adjustment method.

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  • Cooling tower and its frequency conversion fan upper limit frequency adjustment method, device, and air conditioning unit
  • Cooling tower and its frequency conversion fan upper limit frequency adjustment method, device, and air conditioning unit
  • Cooling tower and its frequency conversion fan upper limit frequency adjustment method, device, and air conditioning unit

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Embodiment Construction

[0024] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0025] A method for adjusting the upper limit frequency of a frequency conversion fan of a cooling tower, comprising step S100, step S200 and step S300.

[0026] Step S100, obtaining the return water temperature of the main cooling pipe of the cooling tower.

[0027] Specifically, a cooling tower is a device that uses water as a circulating coolant to absorb heat from the system and discharge it to the atmosphere to reduce the temperature...

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Abstract

The invention relates to a cooling tower, a cooling tower variable-frequency fan upper limit frequency adjusting method and device and an air conditioning unit. According to the method, the water return temperature of a cooling main pipe of a cooling tower is acquired in real time, when the duration that the water return temperature of the cooling main pipe is continuously larger than or equal tothe first preset temperature achieves the first preset duration, the current water return temperature of the cooling main pipe is excessively high, at the moment, a variable-frequency fan of the cooling tower is controlled to operate at the maximum frequency, and when the duration that water return temperature of the cooling main pipe is continuously less than or equal to the second preset temperature achieves the second duration, only the upper limit frequency of the variable-frequency fan needs to be adjusted appropriately according to a preset amplitude value. By adjusting the upper limit frequency of the variable-frequency fan of the cooling tower, automatic optimization of the frequency range is realized, under the condition that equipment is cooled by cooling water, the output frequency of the variable-frequency fan is avoided to be blindly improved, unnecessary energy consumption of equipment is reduced, the COP of a cold source system is also improved, so that the equipment iscontrolled to operate in an energy-saving and efficient mode.

Description

technical field [0001] The present application relates to the field of frequency conversion technology, in particular to a method and device for adjusting the upper limit frequency of a cooling tower and its frequency conversion fan, and an air conditioning unit. Background technique [0002] The cooling tower (The Cooling Tower) is to disperse a large amount of hot water generated by the central air conditioner, through the direct heat transfer of air flow and the conversion of liquid water into gaseous state to absorb a large amount of heat, which is taken away by the atmosphere, so that the water temperature can be lowered, and the water is recycled and recycled s installation. Frequency conversion fans are an important part of cooling towers, and their output frequency directly affects the energy consumption and safe operation of cooling towers. Therefore, the stable operation of frequency conversion fans is particularly important. [0003] The traditional variable freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F27/00
CPCF28F27/003
Inventor 卓明胜钟兴宁姜春苗杨金龙王升
Owner GREE ELECTRIC APPLIANCES INC
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