Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method of controlling an air cooler to start defrosting

An air cooler and air control technology, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems affecting refrigeration performance, instrument sensitivity limitation, and non-defrosting, so as to improve energy saving effect and start defrosting timing Accurate and reduce the effect of false defrosting or late defrosting

Active Publication Date: 2020-12-01
百尔制冷(无锡)有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control method of direct measurement refers to the judgment of the defrosting time by directly measuring the thickness of the frost layer. The method of using photoelectric sensors to measure the thickness of the frost layer has been studied more, but it is difficult to be practically applied due to the limitation of the sensitivity of the instrument.
The control method of indirect measurement is to judge the start time of defrosting by measuring the physical model of one or more frosting processes. At present, the "temperature-time" control method is generally used. This method means that when the fin temperature or operating time reaches The defrosting starts when the set value is set. This defrosting method has fixed characteristics, which often leads to defrosting when it is not needed, or the phenomenon of not defrosting when it is necessary, resulting in a great waste of energy and a serious impact on to cooling performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of controlling an air cooler to start defrosting
  • A method of controlling an air cooler to start defrosting
  • A method of controlling an air cooler to start defrosting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] The present invention will be further described now in conjunction with accompanying drawing.

[0072] Such as figure 1 As shown, a method for controlling an air cooler to start defrosting includes the following steps:

[0073] S101, dividing the frosting area corresponding to the air cooler 1 into five frosting zones, and installing a temperature sensor 2 and a humidity sensor 3 on the air inlet side;

[0074] S102, detecting the real-time inlet air temperature and inlet air humidity of the air cooler 1;

[0075] S103. According to the structural parameters of the air cooler 1, the inlet air temperature and the inlet air humidity, determine the frosting zone where the frosting 1 of the air cooler is located;

[0076] S104. Record the duration of each frosting partition where the air inlet temperature and air inlet humidity of the air cooler 1 are located, and record as:

[0077] t A , t B , t C , t D , t E ;

[0078] S105. Calculate the accumulative frost laye...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a defrosting method for a refrigerating system, in particular to a method for controlling an air cooler to start defrosting. The method comprises the following steps that a frosting area of the air cooler is divided into a plurality of frosting sub-areas, and a temperature sensor and a humidity sensor are installed on the air inlet side; the real-time air inlet temperatureand air inlet humidity of the air cooler is detected; the frosting area of the air cooler is judged according to the structural parameters, the air inlet temperature and the air inlet humidity of theair cooler; the time duration of the air inlet temperature and the air inlet humidity of the air cooler staying in the frosting area are recorded; the thickness of the frost layer accumulated in eachfrosting area is calculated according to the thickness increase rate of the frost layer of the frosting areas of the air cooler and the time duration of the frosting area; when the accumulated thickness of the frost layer reaches a set value, defrosting is started. According to the method, the defrosting starting time is accurate, the occurrence of " wrong defrosting or delayed defrosting " caused by an existing conventional defrosting control mode is greatly reduced, and meanwhile, the energy-saving effect in operation is also improved.

Description

technical field [0001] The invention relates to a method for defrosting a refrigeration system, in particular to a method for controlling an air cooler to start defrosting. Background technique [0002] In the refrigeration industry, if the surface temperature of the air cooler (condenser) is lower than the dew point temperature of water vapor in the air and at the same time lower than the triple point temperature of water, water vapor will condense and frost on its surface. Therefore, the phenomenon of frosting in the air cooler is ubiquitous, and the frosting will seriously affect the performance of the air cooler and the entire refrigeration system, and even cause serious harm, so defrosting is very necessary. [0003] In the prior art, the defrosting control method of the air cooler can be divided into a direct measurement defrosting control method and an indirect measurement control method. The control method of direct measurement refers to the judgment of the defrosti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/02F25B49/00
CPCF25B47/02F25B49/00
Inventor 谢洋张志徐韡
Owner 百尔制冷(无锡)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com