CN102331119A - Air conditioner and defrosting control method thereof - Google Patents
Air conditioner and defrosting control method thereof Download PDFInfo
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- CN102331119A CN102331119A CN201110221827A CN201110221827A CN102331119A CN 102331119 A CN102331119 A CN 102331119A CN 201110221827 A CN201110221827 A CN 201110221827A CN 201110221827 A CN201110221827 A CN 201110221827A CN 102331119 A CN102331119 A CN 102331119A
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- heat exchanger
- electrical heating
- heating net
- air conditioner
- outdoor heat
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Abstract
The invention discloses an air conditioner and a defrosting control method thereof. The air conditioner comprises an air conditioner main body and a control assembly thereof; the air conditioner main body is assembled by a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger which are sequentially connected; a throttling assembly is arranged between the indoor heat exchanger and the outdoor heat exchanger; the outdoor heat exchanger is provided with a defrosting component which is connected with the control assembly; the control assembly is provided with an electrical heating net sub program which operates by heating, wherein the electrical heating net sub program which operates by heating has temperature values T1 and T2 in advance, time values M1 and M2; the defrosting component comprises an electrical heating net which covers the outer surface of the outdoor heat exchanger; and when the control assembly on the air conditioner detects that the outdoor heat exchanger is frosted, the electrical heating net can be started to defrost, and can flexibly and effectively defrost and operate according to the operation state of the air conditioner and the changes of the external environment, and the normal heat exchange and normal operation of the air conditioner can be ensured. The air conditioner provided by the invention has a simple and reasonable structure, wide application range and a good defrosting effect.
Description
Technical field
The present invention relates to a kind of air-conditioner, particularly a kind of air-conditioner and defrosting control method thereof.
Background technology
In the prior art; Air conditioner heats running; If the temperature of outdoor air is low and humidity can produce white phenomenon when higher on outdoor heat exchanger, the ventilating path of the outdoor heat exchanger behind the frost narrows down, and the outdoor air amount that in outdoor heat exchanger, circulates can reduce.If the air capacity of circulation reduces, then heat reduces, and causes the evaporating temperature of the interior cold-producing medium that flows of outdoor heat exchanger to descend.If evaporating temperature descends, then the surface temperature in the outside of outdoor heat exchanger also can descend, and is more prone to producing white phenomenon.Because the heat that outdoor heat exchanger absorbs from outdoor air will reduce, the heat that can disperse from indoor heat exchanger also can reduce, so heating capacity decline, destroys indoor comfort.In order to prevent this phenomenon, outdoor heat exchanger the frost amount surpassed when a certain amount of, melt the frost of outdoor heat exchanger through the defrosting running, it is flowed down and the discharge machine outside.
The defrosting running that people know has the reverse cycle defrosting mode; This mode is to heat in the running when needing defrosting at air conditioner; To heat circulation and switch to kind of refrigeration cycle, compressor as thermal source, is made in the high-temperature gas cold-producing medium inflow outdoor heat exchanger from compressor and defrosts.This kind Defrost mode is owing to stop to heat and begin to carry out the reverse cycle defrosting running after the running, and indoor temperature descends significantly in the process of defrosting so exist, and room temperature to reach the required time of design temperature elongated, the comfortableness that the user uses is had a greatly reduced quality.
In addition, also there is a kind of air-conditioner that can heat running and outdoor defrosting simultaneously on the market.This structure is the high-temperature gas part that compressor is discharged to be fed indoor heat exchanger heat, and another part feeds outdoor heat exchanger and defrosts.This kind Defrost mode the time need not stop to heat in defrosting, and indoor temperature reduces very little, but since bypass a part of high-temperature gas in order to defrosting; Make that flowing into indoor high-temperature gas reduces; Cause heating capacity to reduce, it is not warm that the user still can feel, comfort is not good enough.Therefore, be necessary to do further improvement and perfect.
Summary of the invention
The object of the invention aims to provide a kind of simple and reasonable, with low cost, heating efficiency is high and defrosting effect is good air-conditioner and defrosting control method thereof, to overcome weak point of the prior art.
A kind of air-conditioner by this purpose design; Comprise air conditioner main body and Control Component thereof; Air conditioner main body is assembled by the compressor, cross valve, outdoor heat exchanger and the indoor heat exchanger that link to each other successively; Be provided with orifice union between indoor heat exchanger and the outdoor heat exchanger, its architectural feature is that said outdoor heat exchanger is provided with the defrosting parts that are connected with Control Component; Control Component is provided with heating operation electrical heating net subprogram, and heating operation electrical heating net subprogram is preset with temperature value T1 and T2, time value M1 and M2, the duty of Control Component control defrosting parts.
Said defrosting parts comprise electrical heating net, and electrical heating net is covered on the outer surface of outdoor heat exchanger, and electrical heating net is electrically connected with Control Component.
Said Control Component comprises temperature sensor, comparator and the electrical heating net controller that links to each other successively; Temperature sensor detects the temperature of cold-producing medium in outdoor environment temperature and the outdoor heat exchanger, and Control Component is fixedly arranged on the air conditioner main body.
The defrosting control method of air-conditioner may further comprise the steps:
Step 1. is after air-conditioner gets into heating operation electrical heating net subprogram; The temperature t 1 of cold-producing medium in sensing chamber's external heat exchanger; Compare t1 and T1, if t1≤T1, electrical heating net is opened; Get into heating operation electrical heating net subprogram after M1 minute again, utilize the temperature value of cold-producing medium in the temperature sensor sensing chamber external heat exchanger and temperature value T1 to compare;
Step 3. is when t2＞T2, and electrical heating net is closed, and gets into heating operation electrical heating net subprogram after M2 minute again, utilizes the temperature value of cold-producing medium in the temperature sensor sensing chamber external heat exchanger and temperature value T1 to compare.
The present invention compared with prior art has following beneficial effect:
When 1) Control Component on air-conditioner detects the outdoor heat exchanger frosting; Can defrost through opening electrical heating net; Electrical heating net can change according to the duty and the external environment condition of air-conditioner; The running that can defrost effectively flexibly makes the outdoor heat exchanger defrosting thoroughly, guarantees normal heat exchange of air-conditioner and normal operation.
2) to detect outdoor environment temperature lower for the Control Component on the air-conditioner; When the air-conditioning heating capacity can not satisfy the demands, can be through opening electrical heating net, the heat that electrical heating net produces can pass to outdoor heat exchanger; Pass through coolant transmission again to indoor, thereby improve the heating capacity of air-conditioning; It has simple and reasonable, energy-conserving and environment-protective, long service life, applied widely and characteristics that defrosting effect is good, and this structure is applicable to heat pump type air conditioner simultaneously.
Description of drawings
Fig. 1 is one embodiment of the invention perspective view.
Fig. 2 is the operation principle sketch map of Fig. 1.
Fig. 3 is the control flow chart of defrosting control method.
Among the figure: 1 is compressor, and 2 is cross valve, and 3 is outdoor heat exchanger, and 4 is electrical heating net, and 5 is orifice union, and 6 is indoor heat exchanger, and 7 is air conditioner main body.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1-Fig. 2, this air-conditioner comprises air conditioner main body 7 and Control Component thereof, and air conditioner main body 7 is assembled by the compressor 1, cross valve 2, outdoor heat exchanger 3 and the indoor heat exchanger 6 that link to each other successively.Outdoor heat exchanger 3 is communicated with compressor 1 with indoor heat exchanger 6 through cross valve 2 selectivity, is provided with orifice union 5 between indoor heat exchanger 6 and the outdoor heat exchanger 3, and orifice union 5 is realized the throttling step-down and realized the quick balance of air conditioning pressure.
The flow process that normally heats of air-conditioner is: compressor 1 operation; The liquid refrigerant of warm high pressure during the gas refrigerant of discharge HTHP is condensed into after cross valve 2 gets into indoor heat exchangers 6; Again after orifice union 5 throttlings become the two phase refrigerant of low-temp low-pressure; Flash to the gas refrigerant of low-temp low-pressure through outdoor heat exchanger 3, get back to compressor 1 by cross valve 2 again, thereby realize the circulation that heats of a new round.In order further to improve the heating efficiency and the defrosting effect of air-conditioner, outdoor heat exchanger 3 is provided with the defrosting parts that are connected with Control Component.
The defrosting parts are electrical heating net 4, and electrical heating net 4 is covered on the outer surface of outdoor heat exchanger 3, and electrical heating net 4 is electrically connected with Control Component.Control Component is fixedly arranged on the air conditioner main body 7, the duty of Control Component control defrosting parts.Control Component comprises temperature sensor, comparator and the electrical heating net controller that links to each other successively, and temperature sensor is used for detecting the temperature of outdoor environment temperature and outdoor heat exchanger 3 cold-producing mediums.Comparator is used for the temperature of detected outdoor environment temperature and outdoor heat exchanger 3 cold-producing mediums is made comparisons with the temperature that presets, and produces and the output comparison signal.The electrical heating net controller is used for controlling the unlatching of electrical heating net 4 or cutting out through comparison signal; Its purpose is: electrical heating net 4 changes according to the duty and the external environment condition of air-conditioner; The running that can defrost has effectively flexibly guaranteed electrical heating net 4 reliabilities of operation and stability.
Control Component is provided with heating operation electrical heating net subprogram, is preset with temperature value T1 and T2 in the heating operation electrical heating net subprogram, time value M1 and M2, T1=0 degree wherein, T2=-2 degree, M1=5 minute, M2=3 minute.
Referring to Fig. 3, the defrosting control method of air-conditioner may further comprise the steps:
After air-conditioner gets into heating operation electrical heating net subprogram; The temperature that temperature sensor detects cold-producing medium in the outdoor heat exchanger 3 is temperature value t1; Comparator compares back generation and output comparison signal with temperature value t1 and T1; When t1≤T1, the electrical heating net controller is controlled electrical heating net 4 according to above-mentioned signal and is opened.Get into heating operation electrical heating net subprogram after 5 minutes again, utilize the temperature value t1 of cold-producing medium in the temperature sensor sensing chamber external heat exchanger 3 and this temperature value and T1 are compared through comparator.
When t1＞T1, the detected outdoor environment temperature value of C.T sensor t2, comparator compare temperature value t2 and T2 that the back produces and the output comparison signal, and when t2≤T2, the electrical heating net controller is controlled electrical heating net 4 according to above-mentioned signal and opened.Get into heating operation electrical heating net subprogram after 5 minutes again, utilize the temperature value of cold-producing medium in the temperature sensor sensing chamber external heat exchanger 3 and this temperature value and T1 are compared through comparator.
When t2＞T2; The electrical heating net controller controls electrical heating net 4 according to above-mentioned signal and cuts out; Get into heating operation electrical heating net subprogram after 3 minutes again, utilize the temperature value of cold-producing medium in the temperature sensor sensing chamber external heat exchanger 3 and this temperature value and T1 are compared through comparator.
Claims (4)
1. air-conditioner; Comprise air conditioner main body (7) and Control Component thereof; Air conditioner main body (7) is assembled by the compressor (1), cross valve (2), outdoor heat exchanger (3) and the indoor heat exchanger (6) that link to each other successively; Be provided with orifice union (5) between indoor heat exchanger (6) and the outdoor heat exchanger (3), it is characterized in that said outdoor heat exchanger (3) is provided with the defrosting parts that are connected with Control Component; Control Component is provided with heating operation electrical heating net subprogram, and heating operation electrical heating net subprogram is preset with temperature value T1 and T2, time value M1 and M2, the duty of Control Component control defrosting parts.
2. air-conditioner according to claim 1 is characterized in that said defrosting parts comprise electrical heating net (4), and electrical heating net (4) is covered on the outer surface of outdoor heat exchanger (3), and electrical heating net (4) is electrically connected with Control Component.
3. air-conditioner according to claim 1 and 2 is characterized in that said Control Component comprises temperature sensor, comparator and the electrical heating net controller that links to each other successively; Temperature sensor detects the temperature of cold-producing medium in outdoor environment temperature and the outdoor heat exchanger (3), and Control Component is fixedly arranged on the air conditioner main body (7).
4. according to the defrosting control method of the said air-conditioner of claim 1, may further comprise the steps:
Step 1. is after air-conditioner gets into heating operation electrical heating net subprogram; The temperature t 1 of cold-producing medium in sensing chamber's external heat exchanger (3); Compare t1 and T1, if t1≤T1, electrical heating net (4) is opened; Get into heating operation electrical heating net subprogram after M1 minute again, utilize the temperature value and the temperature value T1 of cold-producing medium in the temperature sensor sensing chamber external heat exchanger (3) to compare;
Step 2. is when t1＞T1; The outdoor environment temperature value t2 that the C.T sensor detects; If t2≤T2; Electrical heating net (4) is opened, and gets into heating operation electrical heating net subprogram after M1 minute again, utilizes the temperature value and the temperature value T1 of cold-producing medium in the temperature sensor sensing chamber external heat exchanger (3) to compare;
Step 3. is when t2＞T2, and electrical heating net (4) is closed, and gets into heating operation electrical heating net subprogram after M2 minute again, utilizes the temperature value and the temperature value T1 of cold-producing medium in the temperature sensor sensing chamber external heat exchanger (3) to compare.
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| CN201110221827A CN102331119A (en) | 2011-08-04 | 2011-08-04 | Air conditioner and defrosting control method thereof |
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| CN201110221827A CN102331119A (en) | 2011-08-04 | 2011-08-04 | Air conditioner and defrosting control method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216978A (en) * | 2013-04-02 | 2013-07-24 | 虞寿仁 | Condenser embedded with heating wires for mini microchannel heat pump type air conditioner and deriming method of condenser |
| CN103256766A (en) * | 2013-05-03 | 2013-08-21 | 广东美的制冷设备有限公司 | Method for controlling intelligent defrosting of air conditioner |
| CN106594991A (en) * | 2016-12-19 | 2017-04-26 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| CN106705386A (en) * | 2017-02-28 | 2017-05-24 | 广东美的制冷设备有限公司 | Air-conditioner control method and air-conditioner |
| CN110470001A (en) * | 2019-07-30 | 2019-11-19 | 青岛海尔空调器有限总公司 | The control method and air conditioner of air conditioner without shutting defrosting |
| CN111271796A (en) * | 2020-03-26 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN112728722A (en) * | 2021-01-14 | 2021-04-30 | 中洁环境科技(西安)集团有限公司 | Control method and device of air conditioner and air conditioner external unit |
| CN114791123A (en) * | 2022-05-05 | 2022-07-26 | 安徽扬子空调股份有限公司 | Control method for defrosting and inhibiting frost of heat pump type air conditioner |
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| CN2472159Y (en) * | 2001-04-16 | 2002-01-16 | 广东科龙电器股份有限公司 | Hot Pump air conditioner with assisting defrosting and heating device |
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| CN101943471A (en) * | 2009-07-09 | 2011-01-12 | 陈则韶 | Dual heat-source heat-pump hot water device with extremely simple refrigerating loop |
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| JPS60218551A (en) * | 1984-04-13 | 1985-11-01 | Sharp Corp | Defrosting device for heat pump type air conditioner |
| JPS6423050A (en) * | 1987-07-20 | 1989-01-25 | Sanyo Electric Co | Defrosting method for heat pump type air conditioner |
| CN2472159Y (en) * | 2001-04-16 | 2002-01-16 | 广东科龙电器股份有限公司 | Hot Pump air conditioner with assisting defrosting and heating device |
| CN1467462A (en) * | 2002-07-03 | 2004-01-14 | Lg电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216978A (en) * | 2013-04-02 | 2013-07-24 | 虞寿仁 | Condenser embedded with heating wires for mini microchannel heat pump type air conditioner and deriming method of condenser |
| CN103216978B (en) * | 2013-04-02 | 2015-11-25 | 虞寿仁 | Miniature microchannel heat pump type air conditioner embeds condenser and the defrosting method thereof of heating wire |
| CN103256766A (en) * | 2013-05-03 | 2013-08-21 | 广东美的制冷设备有限公司 | Method for controlling intelligent defrosting of air conditioner |
| CN103256766B (en) * | 2013-05-03 | 2015-06-03 | 广东美的制冷设备有限公司 | Method for controlling intelligent defrosting of air conditioner |
| CN106594991A (en) * | 2016-12-19 | 2017-04-26 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| CN106705386A (en) * | 2017-02-28 | 2017-05-24 | 广东美的制冷设备有限公司 | Air-conditioner control method and air-conditioner |
| CN110470001A (en) * | 2019-07-30 | 2019-11-19 | 青岛海尔空调器有限总公司 | The control method and air conditioner of air conditioner without shutting defrosting |
| CN110470001B (en) * | 2019-07-30 | 2021-10-29 | 青岛海尔空调器有限总公司 | Control method for defrosting of air conditioner without stopping and air conditioner |
| CN111271796A (en) * | 2020-03-26 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN111271796B (en) * | 2020-03-26 | 2024-02-09 | 宁波奥克斯电气股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN112728722A (en) * | 2021-01-14 | 2021-04-30 | 中洁环境科技(西安)集团有限公司 | Control method and device of air conditioner and air conditioner external unit |
| CN114791123A (en) * | 2022-05-05 | 2022-07-26 | 安徽扬子空调股份有限公司 | Control method for defrosting and inhibiting frost of heat pump type air conditioner |
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Application publication date: 20120125 |