CN1955592A - Defrost control method of air conditioner - Google Patents
Defrost control method of air conditioner Download PDFInfo
- Publication number
- CN1955592A CN1955592A CN 200510015745 CN200510015745A CN1955592A CN 1955592 A CN1955592 A CN 1955592A CN 200510015745 CN200510015745 CN 200510015745 CN 200510015745 A CN200510015745 A CN 200510015745A CN 1955592 A CN1955592 A CN 1955592A
- Authority
- CN
- China
- Prior art keywords
- stage
- temperature
- max
- defrosting
- heating operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010257 thawing Methods 0.000 claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000003570 air Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007906 compression Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
A method for controlling the defrosting of air-conditioner includes detecting temperature of refrigerant tube and confirming highest temperature TMAX after 10 minutes of heating operation, judging whether temperature difference TMAX between highest temperature TMAX and current temperature is over 0deg.c or not at each 4 minutes interval after 40 minutes heating operation and making said heating operation continuously be 60 minutes if it is or otherwise applying temperature being detected out at time of 0.5 second before current temperature as TMAX then judging whether defrosting should be carried out or not.
Description
Technical field
The present invention relates to a kind of air-conditioner, particularly relate to a kind of defrosting control method of air-conditioner.
Background technology
Air-conditioner is a kind of device that makes its inner refrigerant carry out the refrigeration of being made up of compression process, condensation process, expansion process and evaporation process or heat circulation.Fig. 1 is that the air-conditioner of prior art is formed schematic diagram.As shown in Figure 1, the air-conditioner of this prior art mainly comprises compressor 1, condenser 2, the expansion valve 3 that is arranged in the off-premises station and is arranged on evaporimeter 4 in the indoor set.When air-conditioner carries out kind of refrigeration cycle, compressed machine 1 compression and the refrigerant that becomes high-temperature high-pressure state at first flows to condenser 2 by cross valve 5, this refrigerant will dispel the heat to the outside in condenser 2, and when flowing through expansion valve 3, significantly reducing its temperature and pressure, this low temperature, low pressure refrigerant are with inflow evaporator 4 then.This refrigerant will absorb the heat of surrounding air in evaporimeter 4, flow back to again in the compressor 1 through cross valve 5 and fluid reservoir 6 at last, circulate so repeatedly.It is then opposite with above-mentioned kind of refrigeration cycle process to heat circulation.When carrying out heat exchange, the refrigerant of condenser 2 internal flows and surrounding air can accumulate in its surface because of inside and outside temperature difference makes airborne moisture, and condense into condensed water, and air-conditioner heats this condensed water of circulation time and might cross the low phenomenon that occurs freezing because of outdoor temperature in the winter time, when ice sheet reaches certain thickness and influences the heat exchange effect of condenser 2, air-conditioner will be within it utilizes the defrosting control program to stop to heat circulation under the microprocessor control of portion, and the short time transfers kind of refrigeration cycle to remove the frost on condenser 2 surfaces, promptly carries out Defrost operation.But there is following point in the air-conditioner of this prior art: the present defrosting control method that adopts all is with the temperature difference Δ T between the Current Temperatures of the maximum temperature of indoor refrigerant pipe and indoor refrigerant pipe
MAXJudge whether and to defrost as benchmark, as Δ T
MAXBegin Defrost operation in the time of=0 ℃, but freezing of condenser 2 surfaces might also not reach the thickness that needs defrosting in this moment off-premises station, therefore causes air-conditioner to occur reducing the problem that heats running rate and influence user's use because of too much shutting down.
Summary of the invention
In order to address the above problem, to the object of the present invention is to provide and a kind ofly can control the Defrost operation process exactly, thereby can improve the defrosting control method of the air-conditioner that heats running rate.
In order to achieve the above object, the defrosting control method of air-conditioner provided by the invention comprises that heating operation begins in the sensing chamber refrigerant pipe temperature and determines indoor refrigerant pipe maximum temperature T after 10 minutes
MAXS10, the S20 stage; Heating operation was judged indoor refrigerant pipe maximum temperature T every 4 minutes after 40 minutes
MAXAnd the temperature difference Δ T between the indoor refrigerant pipe Current Temperatures
MAXWhether greater than 0 ℃ S30, the S40 stage; If the judged result in S40 stage is temperature difference Δ T
MAXGreater than 0 ℃, continue the S50 stage of heating operation to 60 minute; If the judged result in S40 stage is temperature difference Δ T
MAXLess than 0 ℃, then get the temperature value of Current Temperatures in the time of 0.5 second before as T
MAXThe S60 stage; To the S70 stage of whether defrosting and judging; Carry out the S80 stage of Defrost operation; Whether defrost process is finished the S90 stage of judging; If the judged result in S90 stage is not finish defrosting, return the S80 stage of carrying out Defrost operation; If with the judged result in S90 stage be to have finished defrosting, then carry out the S100 stage of heating operation.
The defrosting control method of air-conditioner provided by the invention can make and heat running rate and reach more than 83%, can prevent that therefore air-conditioner from occurring because of too much shutting down the problem that influences user's use.
Description of drawings
Be elaborated below in conjunction with the defrosting control method of the drawings and specific embodiments to air-conditioner provided by the invention.
Fig. 1 is that the air-conditioner of prior art is formed schematic diagram.
Fig. 2 is the defrosting control method flow chart of air-conditioner provided by the invention.
The specific embodiment
As shown in Figure 2, the defrosting control method of air-conditioner provided by the invention comprises that heating operation begins in the sensing chamber refrigerant pipe temperature and determines indoor refrigerant pipe maximum temperature T after 10 minutes
MAXS10, the S20 stage; Heating operation was judged indoor refrigerant pipe maximum temperature T every 4 minutes after 40 minutes
MAXAnd the temperature difference Δ T between the indoor refrigerant pipe Current Temperatures
MAXWhether greater than 0 ℃ S30, the S40 stage; If the judged result in S40 stage is temperature difference Δ T
MAXGreater than 0 ℃, continue the S50 stage of heating operation to 60 minute; If the judged result in S40 stage is temperature difference Δ T
MAXLess than 0 ℃, then get the temperature value of Current Temperatures in the time of 0.5 second before as T
MAXThe S60 stage; To the S70 stage of whether defrosting and judging; Carry out the S80 stage of Defrost operation; Whether defrost process is finished the S90 stage of judging; If the judged result in S90 stage is not finish defrosting, return the S80 stage of carrying out Defrost operation; If with the judged result in S90 stage be to have finished defrosting, then carry out the S100 stage of heating operation.Heat circulation time when winter, compressed machine 1 compression and the refrigerant that becomes high-temperature high-pressure state will at first flow to the evaporimeter 4 in the indoor set under the guiding of cross valve 5.This refrigerant will carry out heat exchange and emit heat with ambient air in evaporimeter 4, flow into condenser 2 inside in the off-premises station then after expansion valve 3 reduces temperature and pressure.The refrigerant of condenser 2 of flowing through will carry out heat exchange with outdoor air and absorb the heat of this air, flow back to again in the compressor 1 through cross valve 5 and fluid reservoir 6 at last, and so circulation can remain on the interior space under the suitable temperature repeatedly.The refrigerant of condenser 2 internal flows can accumulate in its surface because of inside and outside temperature difference makes airborne moisture when carrying out heat exchange with surrounding air, and condense into condensed water, this part condensed water might be owing to the lower phenomenon that occurs freezing of outdoor temperature in winter, and the ice sheet progressive additive.Therefore, air-conditioner provided by the invention will utilize the above-mentioned air-conditioner defrosting control program of its inner microcontroller operation when heating circulation, promptly at first judge whether and to defrost, and when defrosting, needs stop to heat circulation, and the short time transfers kind of refrigeration cycle to remove the frost on condenser 2 surfaces, promptly carry out Defrost operation, and finish the back at Defrost operation and recover normal heating operation.
Claims (1)
1, a kind of defrosting control method of air-conditioner is characterized in that: described defrosting control method comprises: heating operation begins in the sensing chamber refrigerant pipe temperature and determines indoor refrigerant pipe maximum temperature T after 10 minutes
MAXS10, the S20 stage; Heating operation was judged indoor refrigerant pipe maximum temperature T every 4 minutes after 40 minutes
MAXAnd the temperature difference Δ T between the indoor refrigerant pipe Current Temperatures
MAXWhether greater than 0 ℃ S30, the S40 stage; If the judged result in S40 stage is temperature difference Δ T
MAXGreater than 0 ℃, continue the S50 stage of heating operation to 60 minute; If the judged result in S40 stage is temperature difference Δ T
MAXLess than 0 ℃, then get the temperature value of Current Temperatures in the time of 0.5 second before as T
MAXThe S60 stage; To the S70 stage of whether defrosting and judging; Carry out the S80 stage of Defrost operation; Whether defrost process is finished the S90 stage of judging; If the judged result in S90 stage is not finish defrosting, return the S80 stage of carrying out Defrost operation; If with the judged result in S90 stage be to have finished defrosting, then carry out the S100 stage of heating operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015745 CN1955592A (en) | 2005-10-28 | 2005-10-28 | Defrost control method of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015745 CN1955592A (en) | 2005-10-28 | 2005-10-28 | Defrost control method of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1955592A true CN1955592A (en) | 2007-05-02 |
Family
ID=38063070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510015745 Pending CN1955592A (en) | 2005-10-28 | 2005-10-28 | Defrost control method of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1955592A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858637A (en) * | 2010-05-28 | 2010-10-13 | 广州松下空调器有限公司 | Air conditioner defrosting control method and application thereof |
| CN102759237A (en) * | 2011-04-25 | 2012-10-31 | 珠海格力电器股份有限公司 | Heat pump type air conditioner and defrosting control method and device thereof |
| CN104813119A (en) * | 2012-07-31 | 2015-07-29 | 开利公司 | Frozen evaporator coil detection and defrost initiation |
| CN106679325A (en) * | 2017-01-09 | 2017-05-17 | 海信（山东）冰箱有限公司 | Method and device for icing protection for evaporator of refrigerator, and refrigerator |
| CN113513824A (en) * | 2021-05-11 | 2021-10-19 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
-
2005
- 2005-10-28 CN CN 200510015745 patent/CN1955592A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858637A (en) * | 2010-05-28 | 2010-10-13 | 广州松下空调器有限公司 | Air conditioner defrosting control method and application thereof |
| CN101858637B (en) * | 2010-05-28 | 2012-06-06 | 广州松下空调器有限公司 | Air conditioner defrosting control method and application thereof |
| CN102759237A (en) * | 2011-04-25 | 2012-10-31 | 珠海格力电器股份有限公司 | Heat pump type air conditioner and defrosting control method and device thereof |
| CN102759237B (en) * | 2011-04-25 | 2014-07-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioner and defrosting control method and device thereof |
| CN104813119A (en) * | 2012-07-31 | 2015-07-29 | 开利公司 | Frozen evaporator coil detection and defrost initiation |
| CN104813119B (en) * | 2012-07-31 | 2017-05-17 | 开利公司 | Frozen evaporator coil detection and defrost initiation |
| US9995515B2 (en) | 2012-07-31 | 2018-06-12 | Carrier Corporation | Frozen evaporator coil detection and defrost initiation |
| CN106679325A (en) * | 2017-01-09 | 2017-05-17 | 海信（山东）冰箱有限公司 | Method and device for icing protection for evaporator of refrigerator, and refrigerator |
| CN113513824A (en) * | 2021-05-11 | 2021-10-19 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103411290B (en) | Air-conditioner and defrosting control method thereof | |
| CN101644511B (en) | Parallel flow evaporator and anti-freezing method thereof | |
| CN106989488B (en) | Air conditioner and defrosting control method and system of air conditioner | |
| CN105066377B (en) | Air conditioner defrosting control method, device and air conditioner | |
| CN204786911U (en) | Novel defrosting low temperature dehumidifier | |
| CN107514683A (en) | Air conditioner and its indoor unit self-cleaning control method | |
| CN107525220A (en) | Air conditioner and its outdoor unit automatically cleaning control method | |
| CN201373637Y (en) | Heat pump type air conditioner with uninterrupted heating and defrosting | |
| CN104266318A (en) | Control method and system of multi-connected air conditioning unit | |
| CN107289578A (en) | Air conditioner and its defrosting control method | |
| WO2005077015A3 (en) | Defrost mode for hvac heat pump systems | |
| CN106152641B (en) | Air-conditioning refrigerator accurately defrosts intelligent control method and system | |
| CN101476801A (en) | Continuously heating and defrosting heat pump type air conditioner | |
| CN103742987B (en) | The Defrost method of new blower fan system | |
| CN101871684A (en) | Defrosting control method of air conditioner | |
| CN114857749B (en) | Air conditioner and method for controlling defrosting of air conditioner | |
| CN109253524B (en) | Control method of heat pump system, heat pump system and air conditioner | |
| CN203908148U (en) | Air conditioning system | |
| CN110849020A (en) | Heat pump type air conditioner and control method thereof | |
| CN203518359U (en) | Automobile heat pump air conditioner system | |
| CN202501669U (en) | Wind-source heat pump unit provided with condensation defrosting | |
| CN102967118A (en) | Refrigerator defrosting control method and refrigerator adopting method | |
| CN202993410U (en) | Air conditioner outdoor unit with built-in auxiliary electric heater | |
| CN104457067A (en) | Energy-saving quick defroster | |
| CN108375145A (en) | A kind of heat pump system and its defrosting control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070502 |