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

Control method for fluorine deficiency protection of constant-speed air conditioner

A protection control and air conditioner technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve problems such as compressor damage, and achieve the effect of improving reliability, service quality and market reputation

Active Publication Date: 2018-12-07
AUX AIR CONDITIONING LTD BY SHARE LTD
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention proposes a fluorine-deficiency protection control method for a fixed-frequency air conditioner, which solves the problem of damage to the compressor caused by the fluorine-deficiency operation of the air conditioner in the cooling mode, and at the same time ensures that the air conditioner cannot be damaged when there is no fluorine deficiency or a small amount of fluorine deficiency False protection, improve the reliability of the product

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
  • Control method for fluorine deficiency protection of constant-speed air conditioner
  • Control method for fluorine deficiency protection of constant-speed air conditioner
  • Control method for fluorine deficiency protection of constant-speed air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] as attached figure 1 As shown, a fluorine deficiency protection control method for a fixed-frequency air conditioner, including:

[0040] S1. The fixed-frequency air conditioner is turned on in cooling mode, and detects the initial temperature T0 of the coil in the middle of the evaporator;

[0041] S2. After the compressor runs continuously for the first rated time t1, the fixed-frequency air conditioner continuously detects the real-time temperature T1 of the coil in the middle of the evaporator;

[0042] S3. The fixed-frequency air conditioner continuously compares T0-T1 with the first rated temperature △T1, and if the judgment result is always T0-T1>△T1 within N seconds, then exit the fluorine-deficiency protection detection; if If the judging result shows that T0-T1≤△T1, proceed to step S4;

[0043] During the execution process of steps S1-S3, the fixed-frequency air conditioner is turned on in the cooling mode, and when it runs to the first rated time t1, the te...

Embodiment 2

[0054] as attached figure 2 As shown, after the fixed-frequency air conditioner enters the fluorine-deficiency protection, it retrieves the fluorine-deficiency code and sends the fluorine-deficiency code to the user terminal and the manufacturer's after-sales terminal.

[0055] This enables the air conditioner to promptly and effectively remind the user and the manufacturer's after-sales service after entering the fluorine-deficiency protection, thereby establishing the relationship between the user-air conditioner-manufacturer's after-sales service, and enabling the manufacturer's after-sales service to actively maintain the user's air conditioner , in order to improve its service quality and market reputation, and at the same time avoid the hysteresis problem that exists in the process of repairing the air conditioner after the user passively finds that the air conditioner compressor is down.

Embodiment 3

[0057] In order to further improve the accuracy of the air conditioner in judging the lack of fluorine and improve the reliability of the product, some parameters of the judgment process of the lack of fluorine need to be limited in the fixed frequency air conditioner:

[0058] Taking the first rated time t1, the second rated time t2, the first rated temperature △T1, the second rated temperature △T2, and the third rated temperature △T3 as an example, (t1+4)min≤t2≤14min and t1≥2min ;

[0059] △T1≥1℃, △T2≥1℃;

[0060] When T2≥30℃, △T3≥2℃; when T2≥30℃, △T3≥1℃.

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 provides a control method for fluorine deficiency protection of a constant-speed air conditioner. The control method comprises the following steps of starting up the constant-speed air conditioner under a cooling mode, and detecting initial temperature T0 of a middle coiler of an evaporator; after a compressor continuously runs for first rated time, detecting real-time temperature T1of the middle coiler of the evaporator; comparing T0-T1 with first rated temperature Delta T1, and if T0-T1 is greater than Delta T1, quitting detection on fluorine deficiency protection; if T0-T1 isnot greater than Delta T1, and after the compressor continuously runs for second rated time, detecting real-time temperature T1' of the middle coiler of the evaporator and real-time temperature T2 ofan air inlet of an indoor unit of the air conditioner; comparing T0-T1' with second rated temperature Delta T2, and if T0-T1' is greater than Delta T2, quitting detection on fluorine deficiency protection; if T0-T1' is not greater than Delta T2, comparing T2-T1' with third rated temperature Delta T3, and if T2-T1' is greater than Delta T3, quitting detection on fluorine deficiency protection; andif T2-T1' is not greater than Delta T3, entering fluorine deficiency protection. The method solves the problem that the compressor is damaged due to fluorine deficiency running of the air conditionerunder the cooling mode, and therefore, mistake protection cannot occur under the condition that the air conditioner is not lacking of fluorine or lacking of very little fluorine, and product reliability is increased.

Description

technical field [0001] The invention relates to a fluorine-deficiency protection control method for a fixed-frequency air conditioner. Background technique [0002] At present, the refrigerants of air conditioners are mainly fluorine-containing compounds, which are easy to evaporate and liquefy. They absorb heat during evaporation and release heat during liquefaction. Air conditioners use this characteristic to transfer energy to achieve refrigeration, The purpose of heating, however, lack of fluorine is also a common fault in the use of air conditioners. If the air conditioner continues to run for a long time after lack of fluorine, not only the cooling and heating effects will be poor, and electric energy will be wasted, but also the compressor will be overheated. Overheating will not only reduce the insulation performance and reliability of the motor, shorten the life of the motor, but also reduce the lubricating ability of the lubricating oil, and even cause carbonizatio...

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
IPC IPC(8): F24F11/38F24F11/64
Inventor 颜景旭应必业袁双全杨勇刘恒恒
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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