CN103471203B - The defrosting control method of air-conditioner and air-conditioner system - Google Patents
The defrosting control method of air-conditioner and air-conditioner system Download PDFInfo
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- CN103471203B CN103471203B CN201310386193.4A CN201310386193A CN103471203B CN 103471203 B CN103471203 B CN 103471203B CN 201310386193 A CN201310386193 A CN 201310386193A CN 103471203 B CN103471203 B CN 103471203B
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Abstract
The present invention discloses a kind of air-conditioner system, comprising: compressor, cross valve, outdoor heat exchanger, first throttle parts, indoor heat exchanger, the first switch block, triple valve, second section stream unit and control device; When first switch block is connected to the exhaust outlet of described compressor and heats outdoor heat exchanger import between; Described triple valve is connected between cross valve and the gas returning port of compressor, and between an interface of second section stream unit connecting tee valve and the gas returning port of compressor.This control device first controls the first switch block and opens to carry out bypass defrosting to air-conditioner when needs defrost, when bypass defrosting is unclean, then controls triple valve commutation, extend the time of refrigerant at outdoor heat exchanger to make second section stream unit.The invention also discloses the defrosting control method of this air-conditioner system.Present invention reduces the defrost time, and the phenomenon that the fluctuations in indoor temperature avoiding cross valve of the prior art commutation defrost and cause is large.<!--1-->
Description
Technical field
The present invention relates to air-conditioner field, particularly relate to a kind of defrosting control method and air-conditioner system of air-conditioner.
Background technology
As shown in Figures 1 and 2, air-conditioning system traditional is at present made up of compressor 1, cross valve 2, outdoor heat exchanger 3, throttle part 4, indoor heat exchanger 5, drive refrigerant at system Inner eycle by compressor 1, when refrigerant flows through compressor 1, cross valve 2a → cross valve 2b → outdoor heat exchanger 3 → throttle part 4 → indoor heat exchanger 5 → cross valve 2d → cross valve 2c → compressor 1, what it was formed is kind of refrigeration cycle, and indoor temperature is reduced.When refrigerant flows through compressor 1 → cross valve 2a → cross valve 2d → indoor heat exchanger 5 → throttle part 4 → outdoor heat exchanger 3 → cross valve 2b → cross valve 2c → compressor 1, what it was formed is heat circulation, and indoor temperature is raised.The refrigerant heating circulation time indoor heat exchanger 5 is high-temperature high-pressure state, and the refrigerant in outdoor heat exchanger 3 is low temperature, needs to absorb external heat to complete evaporation.When outdoor temperature is lower, the temperature of outdoor heat exchanger 3 is usually less than 0 degree, and running after a period of time outdoor heat exchanger 3 will frosting, and after frosting, the temperature of outdoor heat exchanger 3 is more and more lower, has a strong impact on indoor heating effect.Therefore, will defrost to outdoor heat exchanger 3 every a period of time, and traditional defrosting mode is for carry out reverse cycle defrost to cross valve 2, namely cross valve 2 is by a → d originally heating circulation, b → c connection switches to kind of refrigeration cycle a → b, d → c connects, simultaneously, by-passing valve 6 is opened the refrigerant that the exhaust outlet A1 of indoor heat exchanger 5 is discharged and is also directly entered outdoor heat exchanger 3 to realize the bypass defrosting of air-conditioner by by-passing valve 6, in whole defrost process, indoor heat exchanger 5 incites somebody to action heat inside absorption chamber all the time, and compressor 1 needs shutdown 2 times from start to end, defrosting repeatedly not only causes fluctuations in indoor temperature larger, and defrosting time is longer.
Summary of the invention
The main purpose of the embodiment of the present invention is to provide a kind of defrosting control method and air-conditioner system of air-conditioner, is intended to shorten the defrost time, and the phenomenon that the fluctuations in indoor temperature avoiding cross valve of the prior art commutation defrost and cause is large.
For reaching above object, embodiments provide a kind of air-conditioner system, comprise: successively by compressor, cross valve, outdoor heat exchanger, first throttle parts and indoor heat exchanger that pipe arrangement connects, also comprise the first switch block, triple valve, second section stream unit and control the control device of the first switch block, triple valve work respectively; When described first switch block is connected to the exhaust outlet of described compressor and heats outdoor heat exchanger import between; Described triple valve is connected between cross valve and the gas returning port of compressor, and between an interface of described second section stream unit connecting tee valve and the gas returning port of compressor; Described control device comprises:
First defrosting control module, during for detecting defrost instruction, opening the first switch block, carrying out bypass defrosting to air-conditioner, and stops defrost when reaching and exiting defrost condition;
Defrost time logging modle, for recording defrost t10 running time of unlatching first switch block, and judges whether t10 is more than or equal to the first preset time;
Temperature acquisition module, for when described first defrosting control module opens the first switch block, the temperature T5 in outdoor heat exchanger exit when Real-time Obtaining heats, confession the first defrosting control module carries out the judgement that bypass defrosting exits;
Second defrosting control module, for when t10 is more than or equal to the first preset time, is controlled triple valve and switches, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, carry out defrost to air-conditioner.
Preferably, when the temperature T5 in described outdoor heat exchanger exit is more than or equal to the first preset temperature, defrost is exited.
Preferably, described defrost time logging modle also for: after control triple valve switches, record switches defrost t11 running time after described triple valve; Described temperature acquisition module also for: control triple valve switch after, the temperature T5 in the exit of outdoor heat exchanger when Real-time Obtaining heats;
Described second defrosting control module also for: when t11 is more than or equal to the second preset time, exit defrost; Or when this temperature T5 is more than or equal to the first preset temperature, exit defrost.
Preferably, described temperature acquisition module also for, when detecting defrost instruction, obtain indoor environment temperature;
Described second defrosting control module also for: when indoor environment temperature is less than the second preset temperature, switch described triple valve, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, defrost carried out to air-conditioner.
Preferably, described control device also comprises:
Defrost detection module, after compressor start heating operation the 3rd preset time, detects air-conditioner the need of defrost;
Defrost initialization module, for when air-conditioner needs defrost, is then set to operational factor during defrost, and sends defrost instruction by the current operating parameter of air-conditioner.
The embodiment of the present invention additionally provides a kind of defrosting control method of air-conditioner, is applied to the air-conditioner system described in said structure, and this defrosting control method comprises the following steps:
When detecting defrost instruction, open the first switch block, bypass defrosting is carried out to air-conditioner, record this defrost t10 running time simultaneously;
The temperature T5 in the exit of outdoor heat exchanger when Real-time Obtaining heats;
When this temperature T5 is more than or equal to the first preset temperature, exit defrost;
When t10 is more than or equal to the first preset time, controls triple valve and switch, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, continue to carry out defrost to air-conditioner.
Preferably, described control triple valve also comprises after switching:
Record switches defrost t11 running time of described triple valve, or obtains the temperature T5 in exit of outdoor heat exchanger when heating in real time;
When t11 is more than or equal to the second preset time, exit defrost; Or when this temperature T5 is more than or equal to the first preset temperature, exit defrost.
Preferably, also comprise when detecting defrost instruction described in:
Obtain indoor environment temperature;
When indoor environment temperature is less than the second preset temperature, then switch described triple valve, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, continue to carry out defrost to air-conditioner.
Preferably, also comprise before detecting defrost instruction described in:
After compressor start heating operation the 3rd preset time, detect air-conditioner the need of defrost;
When air-conditioner needs defrost, then the current operating parameter of air-conditioner is set to operational factor during defrost, and sends defrost instruction.
Preferably, after described compressor start heating operation the 3rd preset time, detect air-conditioner and comprise the need of defrost:
After compressor start heating operation the 3rd preset time, detect the temperature T30 of outdoor heat exchanger import department when heating and the difference △ T=T30-T5 of the temperature T5 in outdoor heat exchanger exit when heating, and when △ T is more than or equal to the 3rd preset temperature, judge that air-conditioner needs defrost, otherwise judge that air-conditioner does not need defrost.
Preferably, described when air-conditioner needs defrost, then the operational factor when current operating parameter of air-conditioner being set to defrost comprises:
Detect outdoor environment temperature, and itself and the 4th preset temperature are compared;
When outdoor environment temperature is more than or equal to the 4th preset temperature, then compressor operating frequency, indoor fan run defrost parameter, running status when the auxiliary heat acquiescence of indoor electric heats;
When outdoor environment temperature is less than the 4th preset temperature, then compressor operating frequency, indoor fan run defrost parameter, the auxiliary hot enforced opening of indoor electric.
Preferably, described defrosting control method also comprises:
When detecting defrost instruction, time delay 1 the 4th preset time, and after the 4th preset time arrives, open the first switch block, defrost is carried out to air-conditioner.
The embodiment of the present invention is when carrying out defrost by unlatching first switch block to air-conditioner, judge whether defrost is clean within detection time, if defrost is clean not yet, then pass through switch three-way valve again, make second section stream unit can limit the flowing velocity of refrigerant, extend the time of staying of refrigerant in outdoor heat exchanger, thus accelerate the defrost of this outdoor heat exchanger further, shorten the defrost time, and the phenomenon that the fluctuations in indoor temperature avoiding cross valve of the prior art commutation defrost and cause is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-conditioner in prior art;
Fig. 2 is refrigerant flow schematic diagram when air-conditioner carries out bypass defrosting in prior art;
Fig. 3 is the refrigerant flow schematic diagram of air-conditioner system of the present invention under normal heating mode;
Fig. 4 is the high-level schematic functional block diagram of control device first embodiment in air-conditioner system of the present invention;
Fig. 5 is the refrigerant flow schematic diagram under the air-conditioner system defrost pattern shown in Fig. 3;
Fig. 6 is the high-level schematic functional block diagram of control device second embodiment in air-conditioner system of the present invention;
Fig. 7 is the schematic flow sheet of defrosting control method first embodiment of air-conditioner of the present invention;
Fig. 8 is the schematic flow sheet of defrosting control method second embodiment of air-conditioner of the present invention;
Fig. 9 is the schematic flow sheet of defrosting control method the 3rd embodiment of air-conditioner of the present invention;
Figure 10 is the schematic flow sheet of defrosting control method the 4th embodiment of air-conditioner of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Main thought of the present invention is, arranges two kinds of defrost streams, and in the running of air-conditioner, detects the operational factor of air-conditioner, and selects when to enter defrost, select which kind of defrost stream according to operational factor, when exits defrost.When the present invention can overcome existing air-conditioning system defrost, fluctuations in indoor temperature is comparatively large, substantially reduces the defrost time simultaneously.
Particularly, as shown in Figures 3 and 4, a kind of air-conditioner system first embodiment is embodiments provided.The air-conditioner system of this embodiment comprises: compressor 101, cross valve 102, outdoor heat exchanger 103, first throttle parts 104 and indoor heat exchanger 105, and described compressor 101, cross valve 102, outdoor heat exchanger 103, first throttle parts 104 and indoor heat exchanger 105 are connected to form refrigerant circulation by pipe arrangement successively.Compressor 102 has exhaust outlet A1 and gas returning port A2; This cross valve 102 has four interfaces: interface a, interface b, interface c, interface d; Outdoor heat exchanger 103 has import B2 when heating and exports B1.Under air-conditioner system shown in Fig. 2 is in heating mode, refrigerant enters indoor heat exchanger 105 through the exhaust outlet A1 of compressor 101 by interface a, the interface d of cross valve 102, then outdoor heat exchanger 103 is entered through first throttle parts 104, after being discharged by the outlet B1 of outdoor heat exchanger 103, the last gas returning port A2 being back to compressor 101 again by interface b, the interface c of cross valve 102, thus formation one heats circulation.
Above-mentioned air-conditioner system also comprises the first switch block 108, triple valve 107, second section stream unit 106 and controls the control device 200 of the first switch block 108 and triple valve 107 work:
This first switch block 108 is magnetic valve, and its input is connected with the exhaust outlet A1 of compressor 101, and output is connected with the import B2 of outdoor heat exchanger when heating 103.Triple valve 107 comprises e interface, f interface and g interface, and wherein e interface is connected with the c interface of cross valve 102, and f interface is directly connected with the gas returning port A2 of compressor 101, and g interface is connected with the gas returning port A2 of compressor 101 by second section stream unit 106.Above-mentioned control device 200 comprises:
First defrosting control module 201, during for detecting defrost instruction, opening the first switch block 108, close chamber's external fan 109, carrying out defrost to air-conditioner; When temperature T5 is more than or equal to the first preset temperature T1, exit defrost;
Defrost time logging modle 202, for recording unlatching first switch block 108, defrost t10 running time of close chamber's external fan 109, and judge whether t10 is more than or equal to the first preset time;
Temperature acquisition module 203, for when the first defrosting control module 201 opens the first switch block 108, temperature T5 when outdoor heat exchanger 103 exports B1 when Real-time Obtaining heats;
Second defrosting control module 204, when being more than or equal to the first preset time for t10, control triple valve 107 to switch, to make the interface of cross valve 102 be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.
First defrosting control module 201, when detecting defrost instruction, opens the first switch block 108, and close chamber's external fan 109.Meanwhile, defrost time logging modle 202 will start to record its defrost running time when the first defrosting control module 201 opens the first switch block 108, and will be compared by this defrost t10 running time and the first preset time t1.As t10 >=t1, control triple valve 107 and switch, to make the interface c of cross valve 102 be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner; As t10 < t1, then do not process, carry out defrost by former defrost mode.In the present embodiment, this defrost time logging modle 202 is a timer, arranges the threshold value t1 of this timer, and in the embodiment of the present invention, this threshold value t1 is 0 ~ 5 minute, is preferably 2 minutes.When the time that timer is counted reaches threshold value t1, then produce triggering signal, to trigger the second defrosting control module 204 switch three-way valve 107, to make the c interface of cross valve 102 be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.Now, as shown in Figure 5, after this refrigerant is discharged by the exhaust outlet A1 of compressor 101, a part of refrigerant enters indoor heat exchanger 105 through interface a, the interface d of cross valve 102, and then enters outdoor heat exchanger 103 by first throttle parts 104; Another part refrigerant directly enters outdoor heat exchanger 103 due to the conducting of the first switch block 108.Refrigerant through outdoor heat exchanger 103 is flowed out by B1 mouth, and passes through interface b, the interface c of cross valve 102, and the interface e of triple valve 107, interface g, be back to the gas returning port A2 of compressor 101 through second section stream unit 106.
In addition, when the first defrosting control module 201 opens the first switch block 108, temperature acquisition module 203 is by the temperature T5 at the outlet B1 place of outdoor heat exchanger 103 during detection heating operation, this temperature T5 can be detected by the temperature sensor 111 at the outlet B1 place of heat exchanger 103 disposed in the outdoor, then sends it to temperature acquisition module 203.This temperature sensor 111, by the temperature at the outlet B1 place of real-time sensing chamber external heat exchanger 103, obtains for temperature acquisition module 203.When the temperature T5 accessed by this temperature acquisition module 203 is more than or equal to the first preset temperature T1, then exit defrost, namely close the first switch block 108, opening chamber's external fan 109, enter normal heating mode.When the temperature accessed by temperature acquisition module 203 is less than the first preset temperature T1, then continue the temperature at the outlet B1 place obtaining outdoor heat exchanger 103, to judge whether defrost can be exited.Until defrost t10 running time recorded is more than or equal to the first preset time t1, then the second defrosting control module 204 controls the switching of triple valve 107, to make the interface c of cross valve 102 be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.Be understandable that, said temperature acquisition module 203 and temperature sensor 111 can be same parts.In the present embodiment, this first preset temperature T1 is 0 ~ 10 degree, is preferably 2 degree.
Be understandable that, above-mentioned first defrosting control module 201, when controlling air-conditioner and carrying out bypass defrosting, also only can open the first switch block 108, and outdoor fan 109 is failure to actuate.
The embodiment of the present invention is when carrying out defrost by unlatching first switch block 108, close chamber's external fan 109 pairs of air-conditioners, judge whether defrost is clean in detection time t1, if defrost is clean not yet, then again by switch three-way valve 107, make second section stream unit 106 can limit the flowing velocity of refrigerant, extend the time of staying of refrigerant in outdoor heat exchanger 103, thus accelerate the defrost of this outdoor heat exchanger 103 further, shorten the defrost time, and the phenomenon that the fluctuations in indoor temperature avoiding cross valve of the prior art commutation defrost and cause is large.
Further, in above-mentioned control device 200:
Described defrost time logging modle 202 also for: after control triple valve 107 switches, record switches defrost t11 running time after described triple valve 107;
Described temperature acquisition module 203 also for: control triple valve 107 switch after, the temperature T5 at the outlet B1 place of outdoor heat exchanger 103 when Real-time Obtaining heats;
Described second defrosting control module 206 also for: when t11 is less than the second preset time t2, when this temperature T5 is less than the first preset temperature T1, then keep the state that the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.
When the state of opening at maintenance first switch block 108, outdoor fan 109 is closed, after also switching described triple valve 107, again will record this defrost t11 running time simultaneously.And this time t11 is compared with the second preset time t2, if when time t11 is more than or equal to time t2, then exit defrost; Otherwise continue the state keeping the c interface of cross valve 102 to be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.In addition, when the state of opening at maintenance first switch block 108, outdoor fan 109 is closed, after also switching described triple valve 107 simultaneously, can also the temperature T5 at Real-time Obtaining outlet B1 place of outdoor heat exchanger 103 when heating, and it is compared with the first preset temperature T1, if when temperature T5 is more than or equal to temperature T1, then exit defrost; Otherwise continue the state keeping the c interface of cross valve 102 to be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.This exits defrost and refers to closedown first switch block 108, opening chamber's external fan 109, switch three-way valve 107, to make the c interface of cross valve 102 be directly communicated with the gas returning port A2 of compressor 101 by triple valve 107, recovers normal heating mode.In the present embodiment, this second preset time t2 is 5 ~ 15 minutes, is preferably 10 minutes.
The embodiment of the present invention by the defrost time or the time of heating outdoor heat exchanger 103 export the temperature at B1 place, judge whether to exit defrost, as long as both one of meet and can exit defrost.Thus achieve when detecting that defrost is clean and can exit defrost in time, it also avoid defrost overlong time and affect air-conditioner and run normally.
Based on above-mentioned second embodiment, present invention also offers air-conditioner system second embodiment.In the control device of the air-conditioner system of this embodiment:
Described temperature acquisition module 203 also for, when detecting defrost instruction, obtain indoor environment temperature;
Described second defrosting control module 204 also for, when indoor environment temperature is less than the second preset temperature T2, then switch described triple valve 107, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.
When detecting defrost instruction, it also by Real-time Obtaining indoor environment temperature, and compares with the second preset temperature T2 by temperature acquisition module 203.When obtained indoor environment temperature is less than the second preset temperature T2, then to control the closedown of the unlatching of the first switch block 108, outdoor fan 109 according to defrost instruction in the first defrosting control module 201 while, second defrosting control module 204 also will switch described triple valve 107, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.In the present embodiment, this second preset temperature T2 is 0 ~ 20 degree, is preferably 0 degree.When obtained indoor environment temperature is more than or equal to the second preset temperature, second defrosting control module 204 is failure to actuate, and the first defrosting control module 201 controls the unlatching of the first switch block 108, the closedown of outdoor fan 109 according to defrost instruction, defrost is carried out to air-conditioner.
The embodiment of the present invention, by when air-conditioner is carried out defrost, according to the comparative result of indoor environment temperature and the second preset temperature, is selected corresponding defrost stream to carry out defrost to air-conditioner, is accelerated defrost speed further, shorten the defrost time.
Further, with reference to Fig. 6, based on the first or second embodiment, also proposed the 3rd embodiment of air-conditioner system of the present invention.Control device in this embodiment also comprises:
Defrost detection module 205, after starting heating operation the 3rd preset time, detects air-conditioner the need of defrost for compressor 101;
Defrost initialization module 206, for when air-conditioner needs defrost, is then set to operational factor during defrost, and sends defrost instruction by the current operating parameter of air-conditioner.
Particularly, said temperature acquisition module 203 also for: after compressor 101 starts heating operation the 3rd preset time t3, the temperature T30 obtaining outdoor heat exchanger 103 import B2 when heating exports the temperature T5 at B1 place with outdoor heat exchanger 103 when heating.The temperature T30 at above-mentioned defrost detection module 205 counting chamber external heat exchanger 103 import B2 places exports the difference △ T=T30-T5 of the temperature T5 at B1 place with outdoor heat exchanger 103 when heating, and is compared with the 3rd preset temperature T3 by △ T; When △ T is more than or equal to the 3rd preset temperature T3, judge that air-conditioner needs defrost, otherwise judge that air-conditioner does not need defrost.
Obtain when said temperature T30 referred within compressor 101 startup optimization a period of time heat time outdoor heat exchanger 103 the minimum of temperature at import B2 place.This temperature T30 can by be arranged on heat time outdoor heat exchanger 103 the temperature sensor 110 at import B2 place detect acquisition.When T5 refers to and heats, outdoor heat exchanger 103 exports the temperature of B1.This temperature T5 can by be arranged on heat time outdoor heat exchanger 103 the temperature sensor 111 at outlet B1 place detect acquisition.Then defrost detection module 205 is after compressor 101 starts heating operation the 3rd preset time t3, temperature T30 and temperature T5 is obtained by temperature acquisition module 203, then the temperature difference △ T of accounting temperature T30 and temperature T5, and this temperature difference △ T is compared with the 3rd preset temperature T3.When temperature difference △ T is more than or equal to the 3rd preset temperature T3, then judges that air-conditioner needs defrost, otherwise judge that air-conditioner does not need defrost.In the present embodiment, the 3rd preset temperature T3 is 0 ~ 15 degree, is preferably 5 degree.
Said temperature acquisition module 203 also for: defrost detection module 205 detect need defrost time, obtain outdoor environment temperature.Above-mentioned defrost initialization module 206 for: the outdoor environment temperature obtain temperature acquisition module 203 and the 4th preset temperature compare; When outdoor environment temperature is more than or equal to the 4th preset temperature T4, then compressor 101 running frequency, indoor fan 112 run defrost parameter, running status when auxiliary hot 113 acquiescences of indoor electric heat; When outdoor environment temperature is less than the 4th preset temperature T4, then compressor 101 running frequency, indoor fan 112 run defrost parameter, auxiliary hot 113 enforced openings of indoor electric.In the present embodiment, the 4th preset temperature T4 is-2 ~ 5 degree, is preferably 0 degree.Be understandable that, when exiting defrost, the operational factor of air-conditioner will from defrost Parameter reconstruction to normal operational factor, normally to heat.
Further, in the above-mentioned first or second embodiment, the first defrosting control module 201, when detecting defrost instruction, after time delay the 4th preset time t4, will open the first switch block 108, close chamber's external fan 109, to carry out defrost to air-conditioner.In the present embodiment, the 4th preset time t4 is 0 ~ 30 second, is preferably 5 seconds, to ensure that the operational factor of air-conditioner is arranged successfully, then carries out defrost.
With reference to Fig. 7, propose defrosting control method first embodiment of a kind of air-conditioner of the present invention.Based on foregoing air-conditioner system, the defrosting control method of the air-conditioner of this embodiment comprises the following steps:
Step S110, when detecting defrost instruction, open the first switch block, close chamber's external fan, defrost is carried out to air-conditioner, record the time t10 of this defrost simultaneously;
When the first switch block 108 is opened to carry out defrost to air-conditioner, start timer, record the time t10 of this defrost.
The temperature T5 at the outlet B1 place of outdoor heat exchanger when step S120, acquisition heat, and this temperature T5 is compared with the first preset temperature T1;
In the process of above-mentioned defrost, by the temperature T5 at the outlet B1 place of outdoor heat exchanger 103 during detection heating operation, this temperature T5 can be detected by the temperature sensor 111 at the outlet B1 place of heat exchanger 103 disposed in the outdoor.
Step S130, when temperature T5 is more than or equal to the first preset temperature T1, exit defrost.
When temperature T5 is more than or equal to the first preset temperature T1, then exit defrost, namely close the first switch block 108, opening chamber's external fan 109, enter normal heating mode.When temperature T5 is less than the first preset temperature T1, then continues the unlatching of maintenance first switch block 108, the closedown of outdoor fan 109, and obtain the temperature T5 at the outlet B1 place of outdoor heat exchanger 103, to judge whether to exit defrost.
Step S140, when temperature T5 is less than the first preset temperature T1, judge whether t10 is more than or equal to the first preset time t1; When t10 is more than or equal to the first preset time, then proceed to step S150; When t10 is less than the first preset time t1, then proceed to step S120;
Step S150, the first switch block 108 is kept to open, outdoor fan 109 is closed, switch described triple valve 107 simultaneously, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.
When the time that timer is counted reaches the first preset time t1, then produce triggering signal, to trigger the switching of triple valve 107, to make the c interface of cross valve 102 be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.Now, as shown in Figure 5, after this refrigerant is discharged by the exhaust outlet A1 of compressor 101, a part of refrigerant enters indoor heat exchanger 105 through interface a, the interface d of cross valve 102, and then enters outdoor heat exchanger 103 by first throttle parts 104; Another part refrigerant directly enters outdoor heat exchanger 103 due to the conducting of the first switch block 108.Refrigerant through outdoor heat exchanger 103 is flowed out by B1 mouth, and passes through interface b, the interface c of cross valve 102, and the interface e of triple valve 107, interface g, be back to the gas returning port A2 of compressor 101 through second section stream unit 106.
When the time that timer is counted does not reach the first preset time t1, then not switch three-way valve 107, continues the state that maintenance first switch block 108 is opened, outdoor fan 109 is closed.Detect the temperature T5 at the outlet B1 place of outdoor heat exchanger 103 when heating simultaneously, and this temperature T5 is compared with the first preset temperature T1, to judge whether to exit defrost.
The embodiment of the present invention is when carrying out defrost by unlatching first switch block 108, close chamber's external fan 109 pairs of air-conditioners, in detection time t1, whether defrost is clean, if defrost is clean not yet, then again by switch three-way valve 107, make second section stream unit 106 can limit the flowing velocity of refrigerant, extend the time of staying of refrigerant in outdoor heat exchanger 103, thus accelerate the defrost of this outdoor heat exchanger 103 further, shorten the defrost time, and the phenomenon that the fluctuations in indoor temperature avoiding cross valve of the prior art commutation defrost and cause is large.
Further, with reference to Fig. 8, defrosting control method second embodiment of air-conditioner of the present invention is proposed.In this embodiment, also comprise after the step S150 of above-described embodiment:
Step S160, record switch the defrost time t11 after described triple valve;
Step S170, judge whether t11 is more than or equal to the second preset time t2; When t11 is more than or equal to the second preset time t2, then proceed to step S200; When t11 is less than the second preset time t2, then return step S150;
When the state of opening at maintenance first switch block 108, outdoor fan 109 is closed, after also switching described triple valve 107, the time t11 of this defrost will be recorded simultaneously.And this time t11 is compared with the second preset time t2, if when time t11 is more than or equal to time t2, then exit defrost; Otherwise continue the state keeping the c interface of cross valve 102 to be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.
The temperature T5 of the outlet B1 of outdoor heat exchanger 103 when step S180, detection heat;
Step S190, judge whether temperature T5 is more than or equal to the first preset temperature T1; When this temperature T5 is more than or equal to the first preset temperature T1, then proceed to step S200; When temperature T5 is less than the first preset temperature T1, then return step S150;
When the state of opening at maintenance first switch block 108, outdoor fan 109 is closed, after also switching described triple valve 107 simultaneously, can also the temperature T5 at Real-time Obtaining outlet B1 place of outdoor heat exchanger 103 when heating, and it is compared with the first preset temperature T1, if when temperature T5 is more than or equal to temperature T1, then exit defrost; Otherwise continue the state keeping the c interface of cross valve 102 to be communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.
Step S200, exit defrost.
This exits defrost and refers to closedown first switch block 108, opening chamber's external fan 109, switch three-way valve 107, to make the c interface of cross valve 102 be directly communicated with the gas returning port A2 of compressor 101 by triple valve 107, recovers normal heating mode.
The embodiment of the present invention, by the temperature at defrost time or the time of heating outdoor heat exchanger 103 import B2 place, judges whether to exit defrost, if both one of meet can exit defrost.Thus achieve when detecting that defrost is clean and can exit defrost in time, it also avoid defrost time course and affect air-conditioner and run normally.
Further, with reference to Fig. 9, defrosting control method the 3rd embodiment of air-conditioner of the present invention is proposed.In this embodiment, the defrosting control method of air-conditioner comprises:
Step S210, when detecting defrost instruction, detect indoor environment temperature, and judge whether this indoor environment temperature is more than or equal to the second preset temperature T2; When indoor environment temperature is more than or equal to the second preset temperature T2, then perform step S220; When indoor environment temperature is less than the second preset temperature T2, then perform step S260;
When detecting defrost instruction, by Real-time Obtaining indoor environment temperature, and it is compared with the second preset temperature T2.
Step S220, open the first switch block, close chamber's external fan, defrost is carried out to air-conditioner, records the time t10 of this defrost simultaneously;
When obtained indoor environment temperature is more than or equal to the second preset temperature, the second defrosting control module 204 is failure to actuate, and the first defrosting control module 201 controls the unlatching of the first switch block 108, the closedown of outdoor fan 109, carries out defrost to air-conditioner.
The temperature T5 at the outlet B1 place of outdoor heat exchanger when step S230, acquisition heat, and this temperature T5 is compared with the first preset temperature T1;
Carry out in the process of defrosting control in the first defrosting control module 201, the temperature T5 at the outlet B1 place of outdoor heat exchanger when acquisition is heated, and this temperature T5 and the first preset temperature T1 is compared, to judge whether to exit defrost.
Step S240, when temperature T5 is more than or equal to the first preset temperature T1, exit defrost;
Step S250, when temperature T5 is less than the first preset temperature T1, judge whether t10 is more than or equal to the first preset time t1; When t10 is more than or equal to the first preset time, then proceed to step S260; When t10 is less than the first preset time t1, then proceed to step S230;
When temperature T5 is less than the first preset temperature T1, judge whether the defrost time t10 recorded is more than or equal to the first preset time t1.
Step S260, the first switch block 108 is kept to open, outdoor fan 109 is closed, switch described triple valve 107 simultaneously, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.
When judgement first defrosting control module 201 carries out defrosting control the defrost time, t10 was more than or equal to the first preset time t1 time, then the second defrosting control module 204 action, control triple valve 107 switch.In addition, when detecting defrost instruction, the not only unlatching of the first defrosting control module 201 by control first switch block 108, the closedown of outdoor fan 109, second defrosting control module 204 also will switch described triple valve 107 simultaneously, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, defrost is carried out to air-conditioner.
The embodiment of the present invention, by when air-conditioner is carried out defrost, according to the comparative result of indoor environment temperature and the second preset temperature T2, is selected corresponding defrost stream to carry out defrost to air-conditioner, is accelerated defrost speed further, shorten the defrost time.
Further, with reference to Figure 10, defrosting control method the 4th embodiment of air-conditioner of the present invention is proposed.In this embodiment, also comprise before step S110 in the above-described embodiments:
After step S100a, compressor start heating operation the 3rd preset time, detect air-conditioner the need of defrost;
One timer is set, this timer according to triggering startup accordingly, for recording the running time of air-conditioner.Such as, when compressor 101 starts heating operation, then start timer, recording compressed machine 101 starts the running time of rear air-conditioner.After machine 101 to be compressed starts the 3rd preset time t3, defrost detection module 205 detects air-conditioner the need of defrost.The setting of the 3rd preset time t3 is after being provided for compressor start, and air-conditioner carries out normal operating condition.When not detecting that air-conditioner needs defrost, then continue monitoring air-conditioner the need of defrost.
Step S100b, when air-conditioner needs defrost, the current operating parameter of air-conditioner is set to operational factor during defrost;
When detecting that air-conditioner needs defrost, then first the current operating parameter of air-conditioner is set to operational factor during defrost, state of the running frequency of such as compressor, the rotating speed of indoor fan, the auxiliary heat of indoor electric etc.
Further, step S100a in above-described embodiment is specially: after compressor 101 starts heating operation first preset time, the temperature T30 detecting outdoor heat exchanger 103 import B2 when heating exports the difference △ T=T30-T5 of the temperature T5 of B1 with outdoor heat exchanger 103 when heating, and when △ T is more than or equal to the 3rd preset temperature T3, judge that air-conditioner needs defrost, otherwise judge that air-conditioner does not need defrost.
Obtain when said temperature T30 referred within compressor 101 startup optimization a period of time heat time outdoor heat exchanger 103 the minimum of temperature of import B2.This temperature T30 can by be arranged on heat time outdoor heat exchanger 103 the temperature sensor 110 at import B2 place detect acquisition.When T5 refers to and heats, outdoor heat exchanger 103 exports the temperature of B1.This temperature T5 can by be arranged on heat time outdoor heat exchanger 103 the temperature sensor 111 at outlet B1 place detect acquisition.After compressor 101 starts heating operation first preset time, then obtain temperature T30 and temperature T5, the then temperature difference △ T of accounting temperature T30 and temperature T5, and this temperature difference △ T is compared with the 3rd preset temperature T3.When temperature difference △ T is more than or equal to the 3rd preset temperature T3, then judges that air-conditioner needs defrost, otherwise judge that air-conditioner does not need defrost.
Further, the step S100b in above-described embodiment specifically comprises:
A, detection outdoor environment temperature, and itself and the 4th preset temperature T4 are compared;
B, when outdoor environment temperature is more than or equal to the 4th preset temperature T4, then compressor 101 running frequency, indoor fan 112 run defrost parameter, running status when auxiliary hot 113 acquiescences of indoor electric heat;
C, when outdoor environment temperature is less than the 4th preset temperature T4, then compressor 101 running frequency, indoor fan 112 run defrost parameter, auxiliary hot 113 enforced openings of indoor electric.
Be understandable that, when exiting defrost, the operational factor of air-conditioner will from defrost Parameter reconstruction to normal operational factor, normally to heat.
Further, when detecting defrost instruction, by time delay 1 the 4th preset time t4, and after the 4th preset time t4 arrives, open the first switch block, close chamber's external fan, defrost is carried out to air-conditioner.
Further, in above-mentioned first embodiment, after the operational factor of the first defrosting control module 201 when the operational factor of air-conditioner being set to defrost, after time delay the 4th preset time t4, open the first switch block 108 again, close chamber's external fan 109, to carry out defrost to air-conditioner.In the present embodiment, the setting of the 4th preset time, to ensure that the operational factor of air-conditioner is arranged successfully, then carries out defrost.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
The foregoing is only the preferred embodiments of the present invention; not thereby its scope of the claims is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (12)
1. an air-conditioner system, comprise: successively by compressor, cross valve, outdoor heat exchanger, first throttle parts and indoor heat exchanger that pipe arrangement connects, it is characterized in that, also comprise the first switch block, triple valve, second section stream unit and control the control device of the first switch block, triple valve work respectively; When described first switch block is connected to the exhaust outlet of described compressor and heats outdoor heat exchanger import between; Described triple valve is connected between cross valve and the gas returning port of compressor, and between an interface of described second section stream unit connecting tee valve and the gas returning port of compressor; Described control device comprises:
First defrosting control module, during for detecting defrost instruction, opening the first switch block, carrying out bypass defrosting to air-conditioner, and stops defrost when reaching and exiting defrost condition;
Defrost time logging modle, for recording defrost t10 running time of unlatching first switch block, and judges whether t10 is more than or equal to the first preset time;
Temperature acquisition module, for when described first defrosting control module opens the first switch block, the temperature T5 in outdoor heat exchanger exit when Real-time Obtaining heats, confession the first defrosting control module carries out the judgement that bypass defrosting exits;
Second defrosting control module, for when t10 is more than or equal to the first preset time, is controlled triple valve and switches, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, carry out defrost to air-conditioner.
2. air-conditioner system according to claim 1, is characterized in that, when the temperature T5 in described outdoor heat exchanger exit is more than or equal to the first preset temperature, exits defrost.
3. air-conditioner system according to claim 1, is characterized in that, described defrost time logging modle also for: after control triple valve switches, record switches defrost t11 running time after described triple valve; Described temperature acquisition module also for: control triple valve switch after, the temperature T5 in the exit of outdoor heat exchanger when Real-time Obtaining heats;
Described second defrosting control module also for: when t11 is more than or equal to the second preset time, exit defrost; Or when this temperature T5 is more than or equal to the first preset temperature, exit defrost.
4. the air-conditioner system according to any one of claim 1-3, is characterized in that, described temperature acquisition module also for, when detecting defrost instruction, obtain indoor environment temperature;
Described second defrosting control module also for: when indoor environment temperature is less than the second preset temperature, switch described triple valve, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, defrost carried out to air-conditioner.
5. air-conditioner system according to claim 1, is characterized in that, described control device also comprises:
Defrost detection module, after compressor start heating operation the 3rd preset time, detects air-conditioner the need of defrost;
Defrost initialization module, for when air-conditioner needs defrost, is then set to operational factor during defrost, and sends defrost instruction by the current operating parameter of air-conditioner.
6. a defrosting control method for air-conditioner, is characterized in that, is applied to air-conditioner system according to claim 1, and this defrosting control method comprises the following steps:
When detecting defrost instruction, open the first switch block, bypass defrosting is carried out to air-conditioner, record the time t10 of this defrost simultaneously;
The temperature T5 in the exit of outdoor heat exchanger when Real-time Obtaining heats;
When this temperature T5 is more than or equal to the first preset temperature, exit defrost;
When t10 is more than or equal to the first preset time, controls triple valve and switch, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, continue to carry out defrost to air-conditioner.
7. the defrosting control method of air-conditioner according to claim 6, is characterized in that, described control triple valve also comprises after switching:
Record switches defrost t11 running time of described triple valve, or the temperature T5 in the exit of outdoor heat exchanger when Real-time Obtaining heats;
When t11 is more than or equal to the second preset time, exit defrost; Or when this temperature T5 is more than or equal to the first preset temperature, exit defrost.
8. the defrosting control method of the air-conditioner according to claim 6 or 7, is characterized in that, described in also comprise when detecting defrost instruction:
Obtain indoor environment temperature;
When indoor environment temperature is less than the second preset temperature, then switch described triple valve, to make the interface of cross valve be communicated with the gas returning port of compressor by triple valve and second section stream unit, continue to carry out defrost to air-conditioner.
9. the defrosting control method of air-conditioner according to claim 6, is characterized in that, described in detect defrost instruction before also comprise:
After compressor start heating operation the 3rd preset time, detect air-conditioner the need of defrost;
When air-conditioner needs defrost, then the current operating parameter of air-conditioner is set to operational factor during defrost, and sends defrost instruction.
10. the defrosting control method of air-conditioner according to claim 9, is characterized in that, after described compressor start heating operation the 3rd preset time, detects air-conditioner and comprises the need of defrost:
After compressor start heating operation the 3rd preset time, detect the temperature T30 of outdoor heat exchanger import department when heating and the difference △ T=T30-T5 of the temperature T5 in outdoor heat exchanger exit when heating, and when △ T is more than or equal to the 3rd preset temperature, judge that air-conditioner needs defrost, otherwise judge that air-conditioner does not need defrost.
The defrosting control method of 11. air-conditioners according to claim 9, is characterized in that, described when air-conditioner needs defrost, then the operational factor when current operating parameter of air-conditioner being set to defrost comprises:
Detect outdoor environment temperature, and itself and the 4th preset temperature are compared;
When outdoor environment temperature is more than or equal to the 4th preset temperature, then compressor operating frequency, indoor fan run defrost parameter, running status when the auxiliary heat acquiescence of indoor electric heats;
When outdoor environment temperature is less than the 4th preset temperature, then compressor operating frequency, indoor fan run defrost parameter, the auxiliary hot enforced opening of indoor electric.
The defrosting control method of 12. air-conditioners according to claim 6, is characterized in that, described defrosting control method also comprises:
When detecting defrost instruction, by time delay 1 the 4th preset time, and after the 4th preset time arrives, open the first switch block, defrost is carried out to air-conditioner.
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019531B (en) * | 2014-05-30 | 2016-06-22 | 广东美的制冷设备有限公司 | The Defrost method of air-conditioner and air-conditioner |
| CN105910237A (en) * | 2016-05-11 | 2016-08-31 | 广东美的制冷设备有限公司 | Defrosting control method and device for air conditioner |
| CN106369877A (en) * | 2016-11-30 | 2017-02-01 | 广东美的制冷设备有限公司 | Heat pump system and defrosting control method thereof |
| 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 |
| CN109028465B (en) * | 2018-05-24 | 2021-04-20 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN111473556B (en) * | 2019-01-24 | 2021-12-31 | 新奥数能科技有限公司 | Defrosting method for air source low-temperature heat pump unit |
| CN112050373A (en) * | 2019-06-07 | 2020-12-08 | 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 |
| CN112050372A (en) * | 2019-06-07 | 2020-12-08 | 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 |
| CN112050371A (en) * | 2019-06-07 | 2020-12-08 | 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 |
| CN110595093A (en) * | 2019-09-30 | 2019-12-20 | 海信（广东）空调有限公司 | Air conditioning system |
| CN111397099B (en) * | 2020-04-15 | 2021-10-19 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and storage medium |
| CN111503825B (en) * | 2020-04-29 | 2022-08-02 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN112432309B (en) * | 2020-11-26 | 2022-03-18 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner control method |
| CN113685975A (en) * | 2021-08-09 | 2021-11-23 | 格力电器（武汉）有限公司 | Air conditioner and defrosting control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307964A (en) * | 2007-04-19 | 2008-11-19 | 松下电器产业株式会社 | Refrigeration cycle apparatus |
| CN101532705A (en) * | 2009-04-21 | 2009-09-16 | 海信（山东）空调有限公司 | Cold and warm type frequency conversion air conditioner and defrosting method thereof |
| CN101749905A (en) * | 2008-12-05 | 2010-06-23 | 乐金电子(天津)电器有限公司 | Air-conditioner continuous heat-supply and defrost control method |
| CN101975422A (en) * | 2010-09-30 | 2011-02-16 | 广东美的电器股份有限公司 | Warm/cool air-conditioner and defrosting method thereof |
| CN203928271U (en) * | 2013-08-29 | 2014-11-05 | 广东美的制冷设备有限公司 | Air-conditioner system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03286979A (en) * | 1990-03-30 | 1991-12-17 | Matsushita Seiko Co Ltd | Defrosting apparatus of air conditioner |
| CN104011485B (en) * | 2012-01-24 | 2016-05-25 | 三菱电机株式会社 | Conditioner |
-
2013
- 2013-08-29 CN CN201310386193.4A patent/CN103471203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307964A (en) * | 2007-04-19 | 2008-11-19 | 松下电器产业株式会社 | Refrigeration cycle apparatus |
| CN101749905A (en) * | 2008-12-05 | 2010-06-23 | 乐金电子(天津)电器有限公司 | Air-conditioner continuous heat-supply and defrost control method |
| CN101532705A (en) * | 2009-04-21 | 2009-09-16 | 海信（山东）空调有限公司 | Cold and warm type frequency conversion air conditioner and defrosting method thereof |
| CN101975422A (en) * | 2010-09-30 | 2011-02-16 | 广东美的电器股份有限公司 | Warm/cool air-conditioner and defrosting method thereof |
| CN203928271U (en) * | 2013-08-29 | 2014-11-05 | 广东美的制冷设备有限公司 | Air-conditioner system |
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