Unlock instant, AI-driven research and patent intelligence for your innovation.

Defrost control method, system and air conditioner

Active Publication Date: 2020-11-27
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the frost layer of one system in the unit is thick and reaches the defrosting condition, it will enter the defrosting first, and the other system will enter the defrosting after the frost layer is thin. High protection shutdown affects the normal operation of the unit and reduces the efficiency of the unit

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
  • Defrost control method, system and air conditioner
  • Defrost control method, system and air conditioner
  • Defrost control method, system and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, a schematic flow chart of a defrosting control method according to an embodiment of the present invention includes:

[0051] Step S102, when the air conditioner is running in heating mode, determine the heat exchanger tube wall temperature of at least one heat exchange system at a preset time interval;

[0052] Step S104, judging whether the tube wall temperatures of the heat exchangers corresponding to all heat exchanging systems are not greater than the defrosting temperature, and generating judging results;

[0053] Step S106, when the judgment result is negative, determine the first type of heat exchange system in which the corresponding heat exchanger tube wall temperature is greater than the defrosting temperature and the corresponding heat exchanger tube wall temperature is not greater than the defrosting temperature in all heat exchange systems The second type of heat exchange system;

[0054] Step S108, controlling all the first-typ...

Embodiment 2

[0059] Such as figure 2 As shown, a schematic flowchart of a defrosting control method according to yet another embodiment of the present invention includes: Step S202, when the air conditioner is running in heating mode, determine at least one heat exchanger tube of the heat exchange system at a preset time interval wall temperature; step S204, judge whether the tube wall temperatures of the heat exchangers corresponding to all heat exchange systems are not greater than the defrosting temperature, and generate a judgment result; step S206, when the judgment result is no, determine the corresponding The first type of heat exchange system whose tube wall temperature of the heat exchanger is greater than the defrosting temperature and the corresponding second type of heat exchange system whose tube wall temperature of the heat exchanger is not greater than the defrosting temperature; step S208, according to the first type of heat exchange system The difference between the tube ...

Embodiment 3

[0064] Such as image 3 As shown, a schematic structural diagram of a defrosting control system 300 according to yet another embodiment of the present invention includes: a heat exchanger temperature determination unit 302 configured to determine at least one The heat exchanger tube wall temperature of the heat exchange system; the judgment unit 304 is used to judge whether the heat exchanger tube wall temperatures corresponding to all heat exchange systems are not greater than the defrosting temperature, and generate a judgment result; the adjustment object determination unit 306 is used to When the judgment result is no, determine the first type of heat exchange system in which the corresponding heat exchanger tube wall temperature is greater than the defrosting temperature and the second type in which the corresponding heat exchanger tube wall temperature is not greater than the defrosting temperature in all heat exchange systems. type heat exchange system; the adjustment u...

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 defrosting control method and system and an air conditioner. The defrosting control method comprises the steps that when the air conditioner runs in a heating mode, the heat exchanger pipe wall temperature of at least one heat exchange system is determined with the preset time interval; whether the heat exchanger pipe wall temperatures corresponding to all heat exchange systems are not larger than the defrosting temperature or not is judged, a judgment result is generated; when the judgment result is no, the first kind of heat exchange systems with the corresponding heat exchanger pipe wall temperature larger than the defrosting temperature and the second kind of heat exchange system with the corresponding heat exchanger pipe wall temperature not large than the defrosting temperature are determined from all the heat exchange systems; all the first kind of heat exchange systems and all the second kind of heat exchange systems are controlled to adjust the runningfrequency until the corresponding heat exchanger pipe wall temperatures are not larger than the defrosting temperature; all the heat exchange systems are controlled to run in the defrosting mode. Through the technical scheme, the possibility that the system firstly entering the defrosting system retreats from the defrosting, due to high-voltage protection, shut down is caused is reduced, and stability of the air conditioner is improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a defrosting control method, a defrosting control system, a computer device, a computer readable storage medium and an air conditioner. Background technique [0002] Currently, when the air conditioner is heating at a lower ambient temperature, the air-side heat exchanger is frosted. When the unit is composed of multiple systems, uneven frosting on the heat exchangers of each system will occur due to reasons such as the start-up time interval of each system, the difference in air intake conditions, and the difference in system piping. The current defrosting scheme is based on the defrosting judgment of an independent system parameter. It may happen that some systems enter defrosting, and some systems are still running heating. When the frost layer of one system in the unit is thick and reaches the defrosting condition, it will enter the defrosting first, and the...

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): F24F11/41F24F11/89F25B47/00F25B49/00F24F110/10
CPCF25B47/00F25B49/00
Inventor 李钱生林艺锋
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD