CN103162461A - Air conditioner and defrosting control method applied to same - Google Patents
Air conditioner and defrosting control method applied to same Download PDFInfo
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- CN103162461A CN103162461A CN2011104168385A CN201110416838A CN103162461A CN 103162461 A CN103162461 A CN 103162461A CN 2011104168385 A CN2011104168385 A CN 2011104168385A CN 201110416838 A CN201110416838 A CN 201110416838A CN 103162461 A CN103162461 A CN 103162461A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses an air conditioner and a defrosting control method applied to the air conditioner. Wherein, the air conditioner includes a compressor; a four-way valve; a bypass unit including a first throttling element and a two-way valve; the heating unit comprises a second heat exchanger and an electronic expansion valve; the air suction temperature sensing bulb is arranged at the air suction end of the compressor and used for detecting the temperature of the air suction end of the compressor; and the controller comprises a first input end, a first output end and a second output end, wherein the first input end is connected with the air suction temperature sensing bulb, the first output end is connected with the two-way valve, the second output end is connected with the electronic expansion valve, and when the temperature detected by the air suction temperature sensing bulb is lower than a first preset value, the controller controls the two-way valve to be opened and controls the electronic expansion valve to reach the maximum opening degree. The invention solves the problem that the air conditioner in the prior art cannot simultaneously consider the defrosting effect and the equipment cost, thereby achieving the effect of reducing the production cost while ensuring the defrosting efficiency.
Description
Technical field
The present invention relates to a kind of air-conditioner and the defrosting control method that is applied to this air-conditioner.
Background technology
It is also more and more higher to the requirement of quality of the life when people's living standard improves, for the general area on the low side of environment temperature, when using heat pump air conditioner to heat, be easy to frosting on outdoor unit heat exchanger, frost layer can the heat exchanger heat exchange produce very large negative effect, so, after frost layer reaches certain thickness, air conditioner all will enter defrosting mode, removes frost layer.
Most of air conditioners in the market need to be when heating defrost by the cross valve cold pattern of the transformation of ownership that commutates.In this case, the compressor suction duct temperature can be very low, usually remains on below-25 ℃, about pressure 1Bar, is easy to cause the compressor liquid hammer, affects the compressor life-span.Simultaneously, air-breathing temperature is low, and pressure of inspiration(Pi) is low, and cold medium flux is just less, and the compressor consumed power is not high, and the basic source of the institute's calorific requirement that defrosts can not be guaranteed, and affects defrosting speed.
Notification number is CN 201819346U, and Granted publication day is on May 4th, 2011, and name is called the utility model patent of " a kind of air-conditioner ", discloses the higher air conditioner structure of a kind of defrosting efficiency.This air-conditioner is that the bypass branch road of being controlled break-make by two-port valve is set between compressor air-discharging end and outdoor heat exchanger, and the other branch road that connects of being controlled break-make by two-port valve is set between indoor heat exchanger and outdoor heat exchanger again.When needs defrost to outdoor heat exchanger, two two-port valves are all opened, thereby utilized the HTHP refrigerant that compressor is discharged directly pass through the bypass branch road and be connected branch road, outdoor heat exchanger is defrosted, defrosting efficiency improves greatly.But owing to need to increase the other branch road that connects of being controlled break-make by two-port valve between indoor heat exchanger and outdoor heat exchanger, this has just caused the raising of cost, has reduced simultaneously the cost performance of air-conditioning.
Can't take into account simultaneously the problem of defrosting effect and equipment cost for the air-conditioner in correlation technique, not yet propose at present effective solution.
Summary of the invention
Main purpose of the present invention is to provide a kind of air-conditioner and the defrosting control method that is applied to this air-conditioner, can't take into account simultaneously the problem of defrosting effect and equipment cost to solve air-conditioner of the prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of air-conditioner, this air-conditioner comprises: compressor; Cross valve comprises inlet end and the first outlet side, the second outlet side and outlet side, three of the 3rd outlet sides, and wherein, inlet end is connected with the exhaust end of compressor, and the first outlet side is connected with the suction end of compressor; First Heat Exchanger, first end is connected with the second outlet side of cross valve; Bypass block, comprise first throttle element and two-port valve, the first throttle element is connected with the exhaust end of compressor, two-port valve is connected between the second end of first throttle element and First Heat Exchanger, or two-port valve is connected with the exhaust end of compressor, and the first throttle element is connected between the second end of two-port valve and First Heat Exchanger; Heating unit comprises the second heat exchanger and electric expansion valve, and the first end of the second heat exchanger is connected with the 3rd outlet side of cross valve, and electric expansion valve is connected between the second end of the second end of First Heat Exchanger and the second heat exchanger; Air-breathing temperature-sensitive bag is arranged on the suction end of compressor, for detection of the temperature of compressor air suction end; And controller, comprise first input end, the first output and the second output, wherein, the first input end of controller is connected with air-breathing temperature-sensitive bag, the first output of controller is connected with two-port valve, and the second output of controller is connected with electric expansion valve, and the temperature that detects at air-breathing temperature-sensitive bag is during lower than the first preset value, controller is controlled two-port valve and is opened, and the control electric expansion valve reaches maximum opening.
Further, above-mentioned air-conditioner also comprises: electric heater is arranged on the pipeline between the suction end of the first outlet side of cross valve and compressor.
Further, above-mentioned air-conditioner also comprises: indoor pipe temperature-sensitive bag, be arranged on the heat exchanger tube of the second heat exchanger, and be used for the temperature of the heat exchanger tube of inspection the second heat exchanger.
Further, controller also comprises the second input and the 3rd output, wherein, the second input of controller is connected with indoor pipe temperature-sensitive bag, the 3rd output is connected with inner blower, and wherein, the temperature that the temperature that detects at air-breathing temperature-sensitive bag detects lower than the first preset value and indoor pipe temperature-sensitive bag is during more than or equal to the second preset value, inner blower controlled by controller and two-port valve is opened, and the control electric expansion valve reaches maximum opening.
Further, the first throttle element comprises capillary or electric expansion valve.
To achieve these goals, according to another aspect of the present invention, a kind of defrosting control method is provided, be applied to any air-conditioner that foregoing of the present invention provides, this defrosting control method comprises the following steps: S501: whether judge temperature that the air-breathing temperature-sensitive bag of air-conditioner detects lower than the first preset value, if not, execution in step S505, if so, execution in step S503; S503: the two-port valve of controlling air-conditioner is opened, and the electric expansion valve of air-conditioner reaches maximum opening; And S505: control air-conditioner and continue heating operation.
Further, after step S503, defrosting control method is further comprising the steps of: S507: judge that whether temperature that the indoor pipe temperature-sensitive bag of air-conditioner detects is more than or equal to the second preset value, if, execution in step S509, if not, the inner blower of controlling air-conditioner keeps closing, then execution in step S511; S509: the inner blower of controlling air-conditioner is opened, then execution in step S511; S511: whether judge temperature that the air-breathing temperature-sensitive bag of air-conditioner detects higher than the 3rd preset value, if so, execution in step S513, if not, return to step S507; And S513: the two-port valve of controlling air-conditioner cuts out, and the electric expansion valve of air-conditioner is transferred to throttle opening, and the inner blower of air-conditioner and outer blower fan are opened.
Further, step S503 comprises step S504 and S506, wherein, S504: the inner blower and the exogenous wind office that control air-conditioner close, the electric expansion valve of air-conditioner reaches maximum opening, S506: after step S504 Preset Time, control the two-port valve of air-conditioner and open.
Further, step S513 comprises step S510 and S512, wherein, S510: the outer blower fan of controlling air-conditioner is opened, and the two-port valve of air-conditioner cuts out, S512: after step S510 Preset Time, control the inner blower of air-conditioner and open, the electric expansion valve of air-conditioner is transferred to throttle opening.
Further, Preset Time is 30 seconds.
Further, step S506 also comprises: the electric heater of controlling air-conditioner is opened.
Further, step S512 also comprises: the electric heater of controlling air-conditioner cuts out.
By the present invention, adopting increases bypass block, when needs defrost, the bypass block that increases by system and can control the controller that electric expansion valve reaches maximum opening, realize high efficiency defrosting, needn't set up two-port valve and connecting line thereof between First Heat Exchanger and the second heat exchanger, thereby when guaranteeing defrost efficient, reduce production cost, improved the cost performance of air-conditioner.Solve air-conditioner of the prior art and can't take into account simultaneously the problem of defrosting effect and equipment cost, and then reached when guaranteeing defrosting efficiency the effect that reduces production costs.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the air-conditioner of first embodiment of the invention;
Fig. 2 is the concrete structure figure according to the air-conditioner of first embodiment of the invention;
Fig. 3 is the schematic diagram according to the air-conditioner of second embodiment of the invention;
Fig. 4 is the concrete structure figure according to the air-conditioner of second embodiment of the invention;
Fig. 5 is the control method flow chart according to first embodiment of the invention; And
Fig. 6 is the control method flow chart according to second embodiment of the invention.
The specific embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Embodiment one:
Fig. 1 and Fig. 2 are respectively according to the schematic diagram of the air-conditioner of first embodiment of the invention and concrete structure figure, air-conditioner as depicted in figs. 1 and 2 comprises: compressor 1, cross valve 2, First Heat Exchanger 3, bypass block 22, heating unit 24, air-breathing temperature-sensitive bag, indoor pipe temperature-sensitive bag and controller.
Bypass block 22, comprise first throttle element 7 and two-port valve 6, first throttle element 7 is connected with the exhaust end of compressor 1, two-port valve 6 is connected between the second end of first throttle element 7 and First Heat Exchanger 3, or two-port valve 6 is connected with the exhaust end of compressor 1, and first throttle element 7 is connected between the second end of two-port valve 6 and First Heat Exchanger 3.When the air-conditioner defrost, consist of hot gas bypass circuit by first throttle element 7 and the two-port valve 6 that increases, realize not reverse cycle defrost of cross valve 2, improve the comfortableness in room.
Heating unit 24 comprises that the first end of the second heat exchanger 5 and electric expansion valve 4, the second heat exchangers 5 is connected with the 3rd outlet side of cross valve 2, and electric expansion valve 4 is connected between the second end of the second end of First Heat Exchanger 3 and the second heat exchanger 5.
Air-breathing temperature-sensitive bag is arranged on the suction end of compressor 1, for detection of the temperature of compressor 1 suction end.
Indoor pipe temperature-sensitive bag is arranged on the heat exchanger tube of the second heat exchanger, is used for the temperature of the heat exchanger tube of inspection the second heat exchanger.
Controller, comprise first input end, the first output and the second output, wherein, the first input end of controller is connected with air-breathing temperature-sensitive bag, the first output of controller is connected with two-port valve 6, and the second output of controller is connected with electric expansion valve 4, and the temperature that detects at air-breathing temperature-sensitive bag is during lower than the first preset value, controller is controlled two-port valve 6 and is opened, and control electric expansion valve 4 reaches maximum opening.When entering defrost, electronic expansion valve opening is transferred to maximum, and indoor HTHP refrigerant is minimum and enter the outdoor heat exchanger defrost without throttling or restriction effect, so outdoor heat exchanger 3 refrigerants are heated rapidly, and defrost is rapid.This measure not only makes defrost rapid, and indoor heat exchanger remains on higher temperature can guarantee defrost the time, does not absorb the heat in room, makes the indoor room temperature fluctuation range little, thereby has promoted the room comfortableness.
The first throttle element comprises that capillary or electric expansion valve etc. have the parts of throttling function.
By increasing bypass block, when needs defrost, the bypass block that increases by system and can control the controller that electric expansion valve reaches maximum opening, realize high efficiency defrosting, needn't set up two-port valve and connecting line thereof between First Heat Exchanger and the second heat exchanger, thereby when guaranteeing defrost efficient, reduced production cost, improved the cost performance of air-conditioner.Solve air-conditioner of the prior art and can't take into account simultaneously the problem of defrosting effect and equipment cost, and then reached when guaranteeing defrosting efficiency the effect that reduces production costs.
Fig. 5 is the flow chart according to the control method of first embodiment of the invention, as shown in Figure 5, the method comprises the following steps: step S501: judge that whether temperature that the air-breathing temperature-sensitive bag of air-conditioner detects is lower than the first preset value, if not, execution in step S505: control air-conditioner and continue operation and heat, if so, frosting on First Heat Exchanger 3 is described and reaches the degree that needs defrosting, enter step S503 (not shown); Step S503 enters Defrost operation, opens two-port valve 6, controls electric expansion valve 4 and reaches maximum opening, defrosts so that refrigerant enters First Heat Exchanger 3 by electric expansion valve 4 rapidly; Step S507: judge that whether temperature that the indoor pipe temperature-sensitive bag of air-conditioner detects is more than or equal to the second preset value, if, the sensible heat that the second heat exchanger 5 is described is sufficient, can heat in defrosting, enter step S509, if not, the sensible heat that the second heat exchanger 5 is described is sufficient not, can not heat in defrosting, the inner blower of controlling air-conditioner keeps closing, then execution in step S511; Step S509: the inner blower of controlling air-conditioner is opened, and impels indoor air circulation and the second heat exchanger 5 to carry out heat exchange, in order to heat indoor, and execution in step S511 then; Step 5 step S511: judge that whether temperature that the air-breathing temperature-sensitive bag of air-conditioner detects is higher than the 3rd preset value, if, illustrate that the frost on First Heat Exchanger 3 has been melted to a certain degree, can not affect the normal operation that heats, enter step S513 (not shown), if not, return to step S507, proceed defrosting; Step S513 enters heating operation, closes two-port valve 6, and electric expansion valve is transferred to throttle opening, and inner blower and outer blower fan are opened, and the parts such as compressor all enter normal heating operation state.
Wherein, step S503 comprises step S504 and S506, and wherein, S504: the inner blower and the exogenous wind office that control air-conditioner close, and the electric expansion valve of air-conditioner reaches maximum opening, S506: after step S504 Preset Time, control the two-port valve of air-conditioner and open.Controlling inner blower and exogenous wind office closed 30 seconds.When entering Defrost operation, first control electric expansion valve 4 and reach maximum opening and control inner blower and after exogenous wind office closes 30 seconds time, then open two-port valve 6.Can when defrosting, can first defrost a large amount of HTHP refrigerant in the second heat exchanger 5 by 4 pairs of First Heat Exchangers 3 of electric expansion valve like this.If open simultaneously two-port valve 6, will reduce the pressure that enters the second heat exchanger 5, a large amount of HTHP refrigerant in the second heat exchanger 5 just can't be discharged to rapidly First Heat Exchanger 3 timely, thereby has affected defrosting effect.So, delay time and open again two-port valve 6 after 30 seconds, can improve defrosting efficiency.30 seconds this time can be adjusted as the case may be, can be set to other arbitrary values such as 40 seconds or 60 seconds.
Step S513 comprises step S510 and S512, and wherein, S510: the outer blower fan of controlling air-conditioner is opened, the two-port valve of air-conditioner cuts out, S512: after step S510 Preset Time, control the inner blower of air-conditioner and open, the electric expansion valve of air-conditioner is transferred to throttle opening, when entering heating operation, first open outer blower fan, close two-port valve 6, after 30 seconds, control again electric expansion valve 4 and be transferred to throttle opening, open inner blower.Time-delay that like this can be by 30 seconds, then open inner blower returns to when heating required temperature with the temperature that guarantees the heat exchanger tube in the second heat exchanger 5, just carries out heat exchange, avoids the temperature that blows out on the low side and affect the stability of indoor temperature.30 seconds this time also can be adjusted as the case may be, can be set to other arbitrary values such as 40 seconds or 60 seconds.
When needs defrost, the bypass block that increases by system and can control the controller that electric expansion valve reaches maximum opening, realize high efficiency defrosting, needn't set up two-port valve and connecting line thereof between First Heat Exchanger and the second heat exchanger, thereby when guaranteeing defrost efficient, reduce production cost, improved the cost performance of air-conditioner.Simultaneously, be applied to the defrosting control method of this air-conditioner, in the temperature that the compressor air suction end detected during lower than the first preset value, the control bypass block is opened with electric expansion valve and is reached maximum opening, refrigerant can be defrosted to First Heat Exchanger by bypass block and heating unit, thereby realize high efficiency defrosting.And due to this control method, make electric expansion valve have the conducting effect of throttling action and two-port valve, saved the cost of setting up two-port valve and to the control of two-port valve, simplified system architecture and control object, improved the cost performance of air-conditioner.
Embodiment two:
Air-conditioner as shown in Figure 3 and Figure 4, the difference of the air-conditioner of itself and embodiment one is: also comprise an electric heater 8, be arranged on the pipeline between the suction end of the first outlet side of cross valve 2 and compressor 1.When air-conditioner defrosts, heat by 8 pairs of refrigerants that enter compressor 1 of electric heater, make suction temperature and the pressure of inspiration(Pi) at compressor 1 air intake duct place improve, the mass flow that enters the refrigerant of compressor 1 also improves, thereby avoided refrigerant to the compressor liquid hammer, solved that air-conditioner in the prior art is easy to because the compressor liquid hit phenomenon causes the problem that the life-span of compressor reduces, and then reached the effect that improves compressor life-span.
Fig. 6 is the flow chart according to the control method of second embodiment of the invention, control method as shown in Figure 6, and the difference of the control method of itself and embodiment one is:
Step S506 also comprises: control electric heater 8 and open.When entering Defrost operation, first control electric expansion valve 4 and reach maximum opening and control inner blower and after exogenous wind office closes 30 seconds, then open two-port valve 6 and electric heater 8.The unlatching of electric heater 8 has effectively improved compressor 1 suction temperature, Air suction pipe pressure, and the raising of pressure of inspiration(Pi) is conducive to improve the mass flow of the refrigerant that enters compressor 1, makes the refrigerant flow faster of whole system, the main origin of heat when guaranteeing defrosting; The raising of suction temperature will effectively prevent the generation of compressor 1 liquid hammer, ensure the life-span of compressor 1 reliability of operation and compressor 1.And the reason of delaying time 30 seconds is consistent with reason in embodiment one.
Step S512 also comprises: control electric heater 8 and close.When entering heating operation, close two-port valve 6, control electric expansion valve 4 and be transferred to throttle opening, inner blower and outer blower fan are opened, and control simultaneously electric heater 8 and close.When entering heating operation, first open outer blower fan, close two-port valve 6, after 30 seconds, then control electric expansion valve 4 and be transferred to throttle opening, open inner blower, control electric heater 8 and close.Time-delay that like this can be by 30 seconds, then open inner blower returns to when heating required temperature with the temperature that guarantees the heat exchanger tube in the second heat exchanger 5, just carries out heat exchange, avoids the temperature that blows out on the low side and affect the stability of indoor temperature.Simultaneously, just closed electric heater after 30 seconds, in order to make air-conditioner withdraw from when defrosting, the refrigerant of the lower temperature that retains in pipeline is heated before getting back to compressor 1, make suction temperature and the pressure of inspiration(Pi) at compressor 1 air intake duct place improve, the mass flow that enters the refrigerant of compressor 1 also improves.30 seconds this time also can be adjusted as the case may be, can be set to other arbitrary values such as 40 seconds or 60 seconds.
In addition, add electric heater 8 at suction end, allow electric heater 8 be coated on the pipeline of suction end, can reach the raising suction temperature, promote low pressure, strengthen compressor 1 import refrigerant mass flow, improve the effect of system's refrigerant flowing velocity.The air-conditioner that is incorporated as of electric heater 8 provides supplying heat source, can effectively improve defrosting speed.And sufficient at sensible heat, can open inner blower to indoor heating in defrosting.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. an air-conditioner, is characterized in that, comprising:
Compressor (1);
Cross valve (2), comprise inlet end and the first outlet side, the second outlet side and outlet side, three of the 3rd outlet sides, wherein, described inlet end is connected with the exhaust end of described compressor (1), and described the first outlet side is connected with the suction end of described compressor (1);
First Heat Exchanger (3), first end is connected with the second outlet side of described cross valve (2);
Bypass block, comprise described first throttle element (7) and two-port valve (6), described first throttle element (7) is connected with the exhaust end of described compressor (1), described two-port valve (6) is connected between the second end of described first throttle element (7) and described First Heat Exchanger (3), or described two-port valve (6) is connected with the exhaust end of described compressor (1), and first throttle element (7) is connected between the second end of described two-port valve (6) and described First Heat Exchanger (3);
Heating unit, comprise the second heat exchanger (5) and electric expansion valve (4), the first end of described the second heat exchanger (5) is connected with the 3rd outlet side of described cross valve (2), and described electric expansion valve (4) is connected between the second end of the second end of described First Heat Exchanger (3) and described the second heat exchanger (5);
Air-breathing temperature-sensitive bag is arranged on the suction end of described compressor (1), for detection of the temperature of described compressor (1) suction end; And
Controller, comprise first input end, the first output and the second output, wherein, the first input end of described controller is connected with described air-breathing temperature-sensitive bag, the first output of described controller is connected with described two-port valve (6), the second output of described controller is connected with described electric expansion valve (4), the temperature that detects at described air-breathing temperature-sensitive bag is during lower than the first preset value, described controller is controlled described two-port valve (6) and is opened, and controls described electric expansion valve (4) and reach maximum opening.
2. air-conditioner according to claim 1, is characterized in that, also comprises:
Electric heater (8) is arranged on the pipeline between the suction end of the first outlet side of described cross valve (2) and described compressor (1).
3. air-conditioner according to claim 2, is characterized in that, also comprises:
Indoor pipe temperature-sensitive bag is arranged on the heat exchanger tube of described the second heat exchanger (5), for the temperature of the heat exchanger tube that checks described the second heat exchanger (5).
4. air-conditioner according to claim 3, it is characterized in that, described controller also comprises the second input and the 3rd output, wherein, the second input of described controller is connected with described indoor pipe temperature-sensitive bag, the 3rd output is connected with inner blower, wherein, the temperature that the temperature that detects at described air-breathing temperature-sensitive bag detects lower than described the first preset value and described indoor pipe temperature-sensitive bag is during more than or equal to the second preset value, inner blower controlled by described controller and described two-port valve (6) is opened, and control described electric expansion valve (4) and reach maximum opening.
5. the described air-conditioner of any one according to claim 1 to 4, is characterized in that, described first throttle element (7) comprises capillary or electric expansion valve.
6. a defrosting control method, be applied to the described air-conditioner of any one in claim 1 to 5, it is characterized in that, comprises the following steps:
S501: whether judge temperature that the air-breathing temperature-sensitive bag of described air-conditioner detects lower than the first preset value, if not, execution in step S505, if so, execution in step S503;
S503: the two-port valve (6) of controlling described air-conditioner is opened, and the electric expansion valve of described air-conditioner (4) reaches maximum opening; And
S505: control described air-conditioner and continue heating operation.
7. defrosting control method according to claim 6, is characterized in that, after described step S503, described defrosting control method is further comprising the steps of:
S507: whether judge temperature that the indoor pipe temperature-sensitive bag of described air-conditioner detects more than or equal to the second preset value, if so, and execution in step S509, if not, the inner blower of controlling described air-conditioner keeps closing, then execution in step S511;
S509: the inner blower of controlling described air-conditioner is opened, then execution in step S511;
S511: whether judge temperature that the air-breathing temperature-sensitive bag of described air-conditioner detects higher than the 3rd preset value, if so, execution in step S513, if not, return to step S507; And
S513: the two-port valve (6) of controlling described air-conditioner cuts out, and the electric expansion valve of described air-conditioner (4) is transferred to throttle opening, and the inner blower of described air-conditioner and outer blower fan are opened.
8. defrosting control method according to claim 6, is characterized in that, described step S503 comprises step S504 and S506, wherein,
S504: the inner blower and the exogenous wind office that control described air-conditioner close, and the electric expansion valve of described air-conditioner (4) reaches maximum opening,
S506: after described step S504 Preset Time, control the two-port valve (6) of described air-conditioner and open.
9. defrosting control method according to claim 8, is characterized in that, described step S513 comprises step S510 and S512, wherein,
S510: the outer blower fan of controlling described air-conditioner is opened, and the two-port valve of described air-conditioner (6) cuts out,
S512: after the described Preset Time of described step S510, control the inner blower of described air-conditioner and open, the electric expansion valve of described air-conditioner (4) is transferred to throttle opening.
10. defrosting control method according to claim 9, is characterized in that, described Preset Time is 30 seconds.
11. defrosting control method according to claim 10 is characterized in that, described step S506 comprises: the electric heater (8) of controlling described air-conditioner is opened.
12. defrosting control method according to claim 11 is characterized in that, described step S512 comprises: the electric heater (8) of controlling described air-conditioner cuts out.
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| CN104634019A (en) * | 2015-01-22 | 2015-05-20 | 青岛澳柯玛超低温冷冻设备有限公司 | Medical refrigeration container hot gas defrosting system for temperature and humidity control |
| CN104949210A (en) * | 2015-07-23 | 2015-09-30 | 广东美的暖通设备有限公司 | Air conditioning system, air conditioner, and control method for air conditioning system |
| CN106287995A (en) * | 2016-10-28 | 2017-01-04 | 合肥美的暖通设备有限公司 | A kind of air-duct-type air-conditioner and control method, air duct type air conditioning indoor machine |
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| CN113108497A (en) * | 2020-03-09 | 2021-07-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat pump air conditioning system and control method thereof |
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| CN104634019A (en) * | 2015-01-22 | 2015-05-20 | 青岛澳柯玛超低温冷冻设备有限公司 | Medical refrigeration container hot gas defrosting system for temperature and humidity control |
| CN104949210A (en) * | 2015-07-23 | 2015-09-30 | 广东美的暖通设备有限公司 | Air conditioning system, air conditioner, and control method for air conditioning system |
| CN104949210B (en) * | 2015-07-23 | 2018-08-31 | 广东美的暖通设备有限公司 | The control method of air-conditioning system, air conditioner and air-conditioning system |
| CN106287995A (en) * | 2016-10-28 | 2017-01-04 | 合肥美的暖通设备有限公司 | A kind of air-duct-type air-conditioner and control method, air duct type air conditioning indoor machine |
| CN106287995B (en) * | 2016-10-28 | 2019-01-25 | 合肥美的暖通设备有限公司 | A kind of air-duct-type air-conditioner and its control method, air duct type air conditioning indoor machine |
| CN106705352A (en) * | 2016-11-25 | 2017-05-24 | 重庆美的通用制冷设备有限公司 | Air conditioner and control method and device for electronic expansion valve in defrosting process of air conditioner |
| CN106705352B (en) * | 2016-11-25 | 2019-05-24 | 重庆美的通用制冷设备有限公司 | The control method and device of electric expansion valve in a kind of air conditioner and its defrosting |
| CN107084547A (en) * | 2017-04-24 | 2017-08-22 | 青岛海尔空调电子有限公司 | Air-conditioning system and the control method for air-conditioning system |
| CN107084547B (en) * | 2017-04-24 | 2023-04-25 | 青岛海尔空调电子有限公司 | Air conditioning system and control method for air conditioning system |
| CN109386982B (en) * | 2018-09-27 | 2020-06-12 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN109386982A (en) * | 2018-09-27 | 2019-02-26 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN109959120A (en) * | 2019-03-21 | 2019-07-02 | 宁波奥克斯电气股份有限公司 | The Defrost method and air conditioner of air conditioner |
| CN110186153A (en) * | 2019-07-11 | 2019-08-30 | 芜湖美智空调设备有限公司 | Air conditioner and its progress control method, operating control device and computer readable storage medium |
| CN110736201B (en) * | 2019-09-25 | 2022-04-19 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736201A (en) * | 2019-09-25 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736208A (en) * | 2019-09-26 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736217A (en) * | 2019-09-27 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111076446A (en) * | 2019-12-02 | 2020-04-28 | 珠海格力电器股份有限公司 | Heat pump air conditioning system and control method thereof |
| CN113108497B (en) * | 2020-03-09 | 2022-05-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat pump air conditioning system and control method thereof |
| CN113108497A (en) * | 2020-03-09 | 2021-07-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat pump air conditioning system and control method thereof |
| CN111503825A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN115717787A (en) * | 2022-11-09 | 2023-02-28 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner |
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