A defrosting method for heat pump

A technology for heat pumps and evaporators, applied in the defrosting field of heat pumps, to eliminate individual differences in heat pumps, reduce time and energy

Inactive Publication Date: 2012-09-19
MIDEA GRP CO LTD
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a heat pump defrosting method with flexible operation, effective defrosting, avoiding the occurrence of no-frost defrosting caused by component deviations and environmental differences, and a wide range of applications , to overcome the deficiencies in the prior art

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 defrosting method for heat pump
  • A defrosting method for heat pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] see figure 1 , the defrosting method of the heat pump, comprising the following steps:

[0030] In step one, more than one temperature sensor for detecting the temperature of the evaporator is arranged on the evaporator of the heat pump. In this embodiment, a temperature sensor can be set at the refrigerant inlet of the evaporator; of course, it is also possible to set a temperature sensor at other parts of the evaporator.

[0031] Step 2, the first defrosting during the operation of the heat pump adopts a timing defrosting method, and defrosting is performed after detecting that the temperature of the evaporator is lower than 0°C and lasts for 40 minutes.

[0032] The first defrosting refers to the first defrosting after the compressor of the heat pump is turned on or turned on again after being shut down.

[0033] Step 3, determine the maxim...

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

A defrosting method for a heat pump comprises following steps: 1, arranging more than one temperature sensor for detecting the temperature of an evaporator on the evaporator of the heat pump; 2, defrosting the heat pump for the first time by a timing defrosting method during running, and carrying out defrosting after the detected temperature of the evaporator keeps lower than 0 DEG C for 40 minutes; and 3, determining a temperature maximum Tmax of the evaporator in a defrosting period, beginning to time after the first defrosting is finished, recording the temperature maximum Tmax of the evaporator after a first time interval T1, and recording the temperature maximum Tmax by a master control chip of the heat pump. On the basis of the traditional intelligent defrosting, and the step 3 is added to automatically judge a reference value which is the temperature maximum Tmax. The defrosting method for the heat pump has the advantages that operation is flexible, defrosting is effective, frostless defrosting can be avoided to the greatest extent, and an application range is wide.

Description

technical field [0001] The invention relates to a heat pump, in particular to a heat pump defrosting method. Background technique [0002] The defrosting of heat pumps has always been an important and difficult point of heat pump systems. When the heat pump operates at a low ambient temperature, the temperature on the evaporating side will be lower than 0°C, and the condensed water generated by the evaporator will condense on the surface of the evaporator, forming a frost layer. When the frost accumulates more, it will affect the The operation of the heat pump will reduce the working capacity of the heat pump, increase the operating cost, and even seriously affect the life of the heat pump. Therefore, certain methods must be used to remove the accumulated frost. As long as the heat pump is defrosting, it will consume time and energy. However, frost must be defrosted. Therefore, how to find a method that not only ensures the defrosting effect, but also minimizes the defrost...

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): F25B47/02
Inventor 乔晓光
Owner MIDEA GRP CO LTD
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