Method for judging insufficient refrigerant of air conditioning system, and air conditioner

A technology for insufficient refrigerant and air conditioning system, which is applied in the directions of space heating and ventilation, heating and ventilation control system, heating and ventilation safety system, etc. The effect of eliminating security risks

Inactive Publication Date: 2020-02-21
四川长虹空调有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for judging the shortage of refrigerant in an air-conditioning system and an air conditioner, so as to solve the problem that the method for judging the shortage of refrigerant in an inverter air conditioner is inaccurate

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
  • Method for judging insufficient refrigerant of air conditioning system, and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Embodiments of the present invention The method for judging the lack of refrigerant in the air-conditioning system of the present invention, its flow chart can be found in figure 1 , wherein the method includes the following steps:

[0039] S1. After the air conditioner is heated and turned on, when the running time of the compressor reaches the preset time A, step S2 is executed;

[0040] S2. Judging whether the indoor coil temperature - indoor ambient temperature < preset value B and outdoor ambient temperature ≥ preset value C are all satisfied. If both are satisfied, execute step S3. If not, exit the judgment and resume normal operation;

[0041] S3. Reduce the speed of the indoor fan to the preset speed D, and at the same time, after the running time of the compressor reaches the preset time E, step S4 is executed;

[0042] S4. Judging again whether the indoor coil temperature - indoor ambient temperature < preset value B and outdoor ambient temperature ≥ preset v...

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 method for judging insufficient refrigerant of an air conditioning system, and an air conditioner, and belongs to the field of judgment of refrigerant leakage of a frequency conversion air conditioner. In order to solve the problem of an inaccurate determination method of insufficient refrigerant of a current frequency conversion air conditioner, the method comprises the following steps that after a heating mode is started, a compressor runs for a certain time, primary judgments are carried out on whether an inner coil and inner ambient temperature meet a preset difference value within a specified time and whether outer ambient temperature meets a preset value within the specified time, when the preset conditions are met, an inner wind speed is reduced to a presetwind speed, after the preset time, temperature difference judgments of the inner coil and the inner ambient temperature and an outer coil and the outer ambient temperature are carried out again, and if the preset conditions of the temperature difference are still met, insufficient refrigerant of the system is judged; and otherwise, normal operation is restored. Through the difference value of theinner coil and the inner environment temperature, the outer environment temperature, the inner wind speed control and repeated judgment schemes during heating, the characteristic of insufficient refrigerant can be effectively reflected and accurately judged in each use scene of the system.

Description

technical field [0001] The invention relates to the field of judging refrigerant leakage of frequency conversion air conditioners, in particular to a judging method for refrigerant shortage in an air conditioning system and an air conditioner. Background technique [0002] At present, the abnormal operation of the system due to the leakage of the refrigerant of the inverter air conditioner is the most prominent and common problem reported in the after-sales market. When the refrigerant of the air conditioner is insufficient, the system will run abnormally. Not only the heat transfer performance of the system cannot be fully utilized, but also the cooling and heating The effect is poor, and it will also lead to high exhaust temperature, which will cause the system to stop repeatedly due to excessive exhaust, which will aggravate the aging of the compressor lubricating oil, which will greatly shorten the service life of the compressor. The frosting cycle is shortened, which br...

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 Applications(China)
IPC IPC(8): F24F11/64F24F11/61F24F11/77F24F11/36F24F11/37F24F110/12F24F140/20F24F110/10
CPCF24F11/36F24F11/37F24F11/61F24F11/64F24F11/77F24F2110/10F24F2110/12F24F2140/20Y02B30/70
Inventor 杨涛王金龙覃兴文岳冯欢
Owner 四川长虹空调有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap