CN105091436A - Air conditioning unit and heating and defrosting method thereof - Google Patents
Air conditioning unit and heating and defrosting method thereof Download PDFInfo
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- CN105091436A CN105091436A CN201510531287.5A CN201510531287A CN105091436A CN 105091436 A CN105091436 A CN 105091436A CN 201510531287 A CN201510531287 A CN 201510531287A CN 105091436 A CN105091436 A CN 105091436A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010257 thawing Methods 0.000 title claims abstract description 19
- 238000004378 air conditioning Methods 0.000 title abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 32
- 230000008676 import Effects 0.000 claims description 32
- 230000008569 process Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses an air conditioning unit and a heating and defrosting method thereof. The air conditioning unit comprises a plurality of outdoor units and indoor units (2) communicated with the outdoor units through converters (1), wherein the outdoor units comprise first outdoor units (3) and second outdoor units (4), the converters (1) convert the flow direction of refrigerants and are matched with the first outdoor units (3) and the second outdoor units (4), so that the air conditioning unit forms a first working state that the first outdoor units (3) and the second outdoor units (4) are in heating operation, and a second working state that one of the first outdoor units (3) and the second outdoor units (4) is in heating operation and the other one is in defrosting operation. According to the air conditioning unit, the comfort of indoor environment in the defrosting process of the air conditioning unit can be ensured.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of air-conditioner set and heat defrosting method.
Background technology
The defrost of current wind-cooling type heat pump air-conditioner set, in general employing, machine is shut down, and complete machine is switched to refrigeration mode and runs, and outer machine heat exchanger is as condenser, and the high temperature refrigerant of being discharged by compressor is entered outer machine heat exchanger heat release and melts attached frost on heat exchangers.
The defrost mode that this indoor set is shut down, maximum drawback is: after unit enters defrost, main cross valve commutation, and indoor set is as evaporimeter, and interior machine stops heat supply, and during defrost, indoor environment temperature there will be and significantly reduces; After defrost terminates, complete machine switches to the starting stage of heating operation, and system high pressure is set up slowly, and leaving air temp promotes also comparatively slow, causes in defrost process, and fluctuations in indoor temperature is comparatively large, has a strong impact on use in winter air-conditioning heating indoor set environmental amenity.
Summary of the invention
A kind of air-conditioner set is provided in the embodiment of the present invention and heats defrosting method, the comfortableness of indoor environment in air-conditioner set defrost process can be ensured.
For achieving the above object, the embodiment of the present invention provides a kind of air-conditioner set, the indoor set comprising multiple off-premises station and be communicated with by converter with off-premises station, multiple off-premises station comprises the first off-premises station and the second off-premises station, the flow direction of converter conversion refrigerant, and coordinate with the first off-premises station and the second off-premises station, air-conditioner set is made to form the first duty of the first off-premises station and the equal heating operation of the second off-premises station, and first off-premises station and one of them heating operation of the second off-premises station, the second duty that another one defrost runs.
As preferably, first off-premises station comprises the first compressor, First Heat Exchanger and the first cross valve, second off-premises station comprises the second compressor, the second heat exchanger and the second cross valve, indoor set comprises first interface and the second interface, when air-conditioner set is in the first duty, the outlet of the first compressor and the second compressor is all communicated to the first interface of indoor set, and the second interface of indoor set is communicated to the first interface of First Heat Exchanger and the second heat exchanger respectively.
As preferably, first off-premises station comprises the first compressor, First Heat Exchanger and the first cross valve, second off-premises station comprises the second compressor, second heat exchanger and the second cross valve, indoor set comprises first interface and the second interface, when air-conditioner set is in the second duty, the outlet of the first compressor is communicated to the second interface of First Heat Exchanger by the first cross valve, the first interface of First Heat Exchanger and the second interface of indoor set are all communicated to the first interface of the second heat exchanger, second interface of the second heat exchanger is communicated to the import of the first compressor and the second compressor respectively, the outlet of the second compressor is to the first interface of indoor set.
As preferably, first off-premises station comprises the first compressor, First Heat Exchanger and the first cross valve, second off-premises station comprises the second compressor, second heat exchanger and the second cross valve, indoor set comprises first interface and the second interface, when air-conditioner set is in the second duty, the outlet of the first compressor is to the first interface of indoor set, the outlet of the second compressor is communicated to the second interface of the second heat exchanger by the second cross valve, the first interface of the second heat exchanger and the second interface of indoor set are communicated to the first interface of First Heat Exchanger jointly, second interface of First Heat Exchanger is communicated to the import of the first compressor and the second compressor respectively.
As preferably, first off-premises station comprises the first compressor, First Heat Exchanger and the first cross valve, second off-premises station comprises the second compressor, second heat exchanger and the second cross valve, indoor set comprises first interface and the second interface, converter comprises the first pipeline, second pipe, 3rd pipeline, 4th pipeline, 5th pipeline and the 6th pipeline, the first interface of indoor set is communicated to after first pipeline and second pipe cross, the second interface of indoor set is communicated to after 3rd pipeline and the 4th pipeline cross, the first interface of indoor set is communicated to after 5th pipeline and the 6th pipeline cross, the outlet of the first compressor is communicated to first interface and the 5th pipeline of the first cross valve respectively, second orifice of the first cross valve is to the second interface of First Heat Exchanger, 3rd interface of the first cross valve and the import of the first compressor are communicated to the first pipeline jointly, and the first interface of First Heat Exchanger is communicated to the 3rd pipeline, the outlet of the second compressor is communicated to first interface and the 6th pipeline of the second cross valve respectively, second interface of the second orifice to the second heat exchanger of the second cross valve, 3rd interface of the second cross valve and the import of the second compressor are communicated to second pipe jointly, and the first interface of the second heat exchanger is communicated to the 4th pipeline.
As preferably, first pipeline is provided with the first magnetic valve, second pipe is provided with the second magnetic valve, 3rd pipeline is provided with the 3rd magnetic valve, 4th pipeline is provided with the 4th magnetic valve, the 5th pipeline is provided with the 5th magnetic valve, the 6th pipeline is provided with the 6th magnetic valve, the pipeline that crosses of the first pipeline and second pipe is provided with the 7th magnetic valve, the pipeline that crosses of the 5th pipeline and the 6th pipeline is provided with the 8th magnetic valve.
As preferably, be communicated with by the first capillary between the 3rd interface of the first cross valve and the 4th interface of the first cross valve, be communicated with by the second capillary between the 3rd interface of the second cross valve and the 4th interface of the second cross valve.
As preferably, the nozzle position place be connected with indoor set of off-premises station is provided with stop valve.
According to a further aspect in the invention, what provide a kind of air-conditioner set heats defrosting method, and air-conditioner set comprises the first off-premises station, the second off-premises station and indoor set, heats defrosting method and comprises: detect the need of carrying out defrost; When needs carry out defrost, control refrigerant by converter and flow to, make the first off-premises station and the second off-premises station one of them by defrost mode operation, another one press heating mode operation.
As preferably, when needs carry out defrost, determine the off-premises station needing to carry out defrost, when when the first off-premises station and the second off-premises station, one of them needs defrost, make to need the off-premises station of defrost by defrost mode operation, another one is run according to heating mode; When the first off-premises station and the second off-premises station all need defrost, first make one of them according to defrost mode operation, another one is pressed heating mode and is run, and then makes the complete off-premises station of defrost run by heating mode, does not complete the off-premises station of defrost by defrost mode operation.
As preferably, when the first off-premises station defrost runs, during the second off-premises station heating operation, refrigerant in first off-premises station flows into the second heat exchanger of the second off-premises station after the first compressor of the first off-premises station flows through First Heat Exchanger, then after the second heat exchanger outflow, flow back into the import of the import of the first compressor of the first off-premises station and the second compressor of the second off-premises station respectively, the refrigerant of the second off-premises station flows back into the second heat exchanger of the second compressor after the second compressor and indoor set, then after the second heat exchanger outflow, flow back into the import of the import of the first compressor of the first off-premises station and the second compressor of the second off-premises station respectively.
Apply technical scheme of the present invention, the indoor set that air-conditioner set is comprised multiple off-premises station and is communicated with by converter with off-premises station, multiple off-premises station comprises the first off-premises station and the second off-premises station, the flow direction of converter conversion refrigerant, and coordinate with the first off-premises station and the second off-premises station, air-conditioner set is made to form the first duty of the first off-premises station and the equal heating operation of the second off-premises station, and first off-premises station and one of them heating operation of the second off-premises station, the second duty that another one defrost runs.This air-conditioner set is when there being off-premises station to need defrost; other off-premises station can be kept to be in and normally to heat work; the off-premises station needing defrost is made to carry out defrost; both ensure that the off-premises station needing defrost can carry out defrost smoothly; can ensure that indoor pusher side normally heats by the off-premises station of normal heating operation again; avoid the problem affecting indoor environment temperature suitability degree of shutting down and carrying out off-premises station defrost and bringing, improve comfort level and the service behaviour of air-conditioner set operation.
Accompanying drawing explanation
Fig. 1 is the structure principle chart be in when heating state of the air-conditioner set of the embodiment of the present invention;
The first structure principle chart when Fig. 2 is the defrost state that is in of the air-conditioner set of the embodiment of the present invention;
The second structure principle chart when Fig. 3 is the defrost state that is in of the air-conditioner set of the embodiment of the present invention;
Fig. 4 be the air-conditioner set of the embodiment of the present invention heat defrosting method schematic diagram.
Description of reference numerals: 1, converter; 2, indoor set; 3, the first off-premises station; 4, the second off-premises station; 5, the first compressor; 6, First Heat Exchanger; 7, the first cross valve; 8, the second compressor; 9, the second heat exchanger; 10, the second cross valve; 11, the first pipeline; 12, second pipe; 13, the 3rd pipeline; 14, the 4th pipeline; 15, the 5th pipeline; 16, the 6th pipeline; 17, the first magnetic valve; 18, the second magnetic valve; 19, the 3rd magnetic valve; 20, the 4th magnetic valve; 21, the 5th magnetic valve; 22, the 6th magnetic valve; 23, the 7th magnetic valve; 24, the 8th magnetic valve; 25, the first capillary; 26, the second capillary; 27, stop valve.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
See shown in Fig. 1 to Fig. 3, according to embodiments of the invention, the indoor set 2 that air-conditioner set is comprised multiple off-premises station and is communicated with by converter 1 with off-premises station, multiple off-premises station comprises the first off-premises station 3 and the second off-premises station 4, converter 1 changes the flow direction of refrigerant, and coordinate with the first off-premises station 3 and the second off-premises station 4, air-conditioner set is made to form the first duty of the first off-premises station 3 and the equal heating operation of the second off-premises station 4, and first off-premises station 3 and second one of them heating operation of off-premises station 4, the second duty that another one defrost runs.
This air-conditioner set is when there being off-premises station to need defrost; other off-premises station can be kept to be in and normally to heat work; simultaneously to needing the off-premises station of defrost to carry out defrost; both ensure that the off-premises station needing defrost can carry out defrost smoothly; can ensure that indoor pusher side normally heats by the off-premises station of normal heating operation again; avoid the problem affecting indoor environment temperature suitability degree of shutting down and carrying out off-premises station defrost and bringing, improve comfort level and the service behaviour of air-conditioner set operation.
In the present embodiment, first off-premises station 3 comprises the first compressor 5, First Heat Exchanger 6 and the first cross valve 7, second off-premises station 4 comprises the second compressor 8, second heat exchanger 9 and the second cross valve 10, indoor set 2 comprises first interface and the second interface, converter 1 comprises the first pipeline 11, second pipe 12, 3rd pipeline 13, 4th pipeline 14, 5th pipeline 15 and the 6th pipeline 16, the first interface of indoor set 2 is communicated to after first pipeline 11 and second pipe 12 cross, the second interface of indoor set 2 is communicated to after 3rd pipeline 13 and the 4th pipeline 14 cross, the first interface of indoor set 2 is communicated to after 5th pipeline 15 and the 6th pipeline 16 cross.
The outlet of the first compressor 5 is communicated to first interface and the 5th pipeline 15 of the first cross valve 7 respectively, second orifice of the first cross valve 7 is to the second interface of First Heat Exchanger 6,3rd interface of the first cross valve 7 and the import of the first compressor 5 are communicated to the first pipeline 11 jointly, and the first interface of First Heat Exchanger 6 is communicated to the 3rd pipeline 13.
The outlet of the second compressor 8 is communicated to first interface and the 6th pipeline 16 of the second cross valve 10 respectively, second interface of the second orifice to the second heat exchanger 9 of the second cross valve 10,3rd interface of the second cross valve 10 and the import of the second compressor 8 are communicated to second pipe 12 jointly, and the first interface of the second heat exchanger 9 is communicated to the 4th pipeline 14.
First pipeline 11 is provided with the first magnetic valve 17, second pipe 12 is provided with the second magnetic valve 18,3rd pipeline 13 is provided with the 3rd magnetic valve 19,4th pipeline 14 is provided with the 4th magnetic valve 20,5th pipeline 15 is provided with the 5th magnetic valve 21, the pipeline that the crosses pipeline that crosses 6th pipeline 16 being provided with the 6th magnetic valve 22, first pipeline 11 and second pipe 12 being provided with the 7th magnetic valve the 23, five pipeline 15 and the 6th pipeline 16 is provided with the 8th magnetic valve 24.
Situation is connected by the pipeline in regulating rotary parallel operation 1, effectively can control the flow direction of refrigerant, an off-premises station is made to be in defrost mode operation, another off-premises station is in heating mode operation becomes possibility, air-conditioner set can be made operationally to heat on defrost limit in limit, ensure that the continuity of air-conditioner set work, also can ensure the service behaviour of off-premises station simultaneously.
Certainly, converter 1 herein can be realized by modular mode, and the mode that also can directly be connected by pipeline is realized.
In conjunction with shown in Figure 1, the off-premises station for air-conditioner set is all in the fundamental diagram under the state of heating.As can be seen from the figure, when air-conditioner set is in the first duty, namely also the off-premises station of air-conditioner set is all in when heating state, the outlet of the first compressor 5 and the second compressor 8 is all communicated to the first interface of indoor set 2, and the second interface of indoor set 2 is communicated to the first interface of First Heat Exchanger 6 and the second heat exchanger 9 respectively.
When air-conditioner set is in the first duty, the first magnetic valve 17, second magnetic valve 18 in converter 1 and the 7th magnetic valve 23 are closed, in converter 1, other magnetic valve is all opened, second interface of the first cross valve 7 and the 3rd orifice of the first cross valve 7, the second interface of the second cross valve 10 and the 3rd orifice of the second cross valve 10.
The refrigerant of the first off-premises station 3 is after the first compressor 5 outflow, the first interface of indoor set 2 is flowed to through the 5th pipeline 15, then the second interface of machine 2 flows out indoor, the 3rd pipeline 13 through converter 1 flows into First Heat Exchanger 6, then the import of the first compressor 5 is flow back into through the second interface of the first cross valve 7 and the 3rd interface of the first cross valve 7, in the process, indoor set 2 plays condenser, and First Heat Exchanger 6 plays evaporimeter.
Simultaneously, the refrigerant of the second off-premises station 4 is after the second compressor 8 outflow, the first interface of indoor set 2 is flowed to through the 6th pipeline 16, then the second interface of machine 2 flows out indoor, the 4th pipeline 14 through converter 1 flows into the second heat exchanger 9, then flows back into the import of the second compressor 8 through the second interface of the second cross valve 10 and the 3rd interface, in the process, indoor set 2 plays condenser, and the second heat exchanger 9 plays evaporimeter.
Now, because the first magnetic valve 17, second magnetic valve 18 and the 7th magnetic valve 23 are closed, refrigerant cannot flow in the first pipeline 11 and second pipe 12, therefore, only can enter the import of the first compressor 5 after refrigerant flows out from First Heat Exchanger 6, only can enter the import of the second compressor 8 after flowing out from the second heat exchanger 9, the first pipeline 11 cannot be communicated with second pipe 12, first off-premises station 3 and the second off-premises station 4 are all in heating operation state, and air-conditioner set has good heating performance.
In conjunction with shown in Figure 2, when air-conditioner set is in the second duty, when being also defrost duty, now be divided into two kinds of situations, the present embodiment is in defrost operational mode with the first off-premises station 3, and it is that example is described the defrost duty in the first situation of air-conditioner set that the second off-premises station 4 is in heating operation mode.
In the present embodiment, first off-premises station 3 is in defrost operational mode, second off-premises station 4 is in heating operation mode, the outlet of the first compressor 5 is communicated to the second interface of First Heat Exchanger 6 by the first cross valve 7, the first interface of First Heat Exchanger 6 and the second interface of indoor set 2 are all communicated to the first interface of the second heat exchanger 9, second interface of the second heat exchanger 9 is communicated to the import of the first compressor 5 and the second compressor 8 respectively, and the outlet of the second compressor 8 is to the first interface of indoor set 2.
When air-conditioner set runs, the 5th magnetic valve 21 cuts out, and the 5th pipeline 15 is blocked, 7th magnetic valve 23 cuts out, the first interface of the first cross valve 7 and the second orifice, the 3rd interface and the 4th orifice, the second interface of the second cross valve 10 and the 3rd orifice.
After refrigerant now in the first off-premises station 3 flows out from the first compressor 5, First Heat Exchanger 6 is entered into through the first interface of the first cross valve 7 and the second interface, then flow out from First Heat Exchanger 6, the second heat exchanger 9 is flowed to through the 3rd pipeline 13 and the 4th pipeline 14, then after flowing out from the second heat exchanger 9, after second interface and the 3rd interface of the second cross valve 10, a part directly flows to the import of the second compressor 8, and a part flows back into the import of the first compressor 5 after second pipe 12 and the first pipeline 11.
Simultaneously, after refrigerant in second off-premises station 4 flows out from the second compressor 8, directly enter in the 6th pipeline 16, because now the 5th pipeline 15 is obstructed, therefore refrigerant enters indoor set 2 through the 6th pipeline 16 through the first interface of indoor set 2 and carries out heat exchange, then the second interface of machine 2 flows out indoor, after converging with the refrigerant flowed out from the first off-premises station 3 side, together flow to the second heat exchanger 9 through the 4th pipeline 14, then after second interface and the 3rd interface of the second cross valve 10, a part directly flows back into the import of the second compressor 8, a part flows to the import of the first compressor 5 after second pipe 12 and the first pipeline 11.
In said process, First Heat Exchanger 6 and indoor set 2 together use as condenser, first off-premises station 3 and the second off-premises station 4 form refrigerant circulation structure, First Heat Exchanger 6 plays condensation in running, the condensation heat release in First Heat Exchanger 6 of HTHP refrigerant after compression, carry out defrosting to First Heat Exchanger 6, the refrigerant condensed enters in the second heat exchanger 9 and carries out evaporation endothermic, completes the refrigerant circulation of this part.
In the running of whole air-conditioner set, only need to adjust the pipeline conditions of converter 1, change the flow direction of refrigerant, the first off-premises station 3 just can be made to enter defrost operational mode and the second off-premises station keeps heating operation mode synchronously to carry out, heating of indoor set 2 is made still to ensure normal operation, what effectively can ensure indoor heats temperature, improves the heating performance of machine in outer machine defrosting process, improves comfortableness when air-conditioner set runs.
In conjunction with shown in Figure 3, it is the second situation when air-conditioner set is in the second duty.The present embodiment is in heating operation mode with the first off-premises station 3, and it is that example is described the defrost duty in the second situation of air-conditioner set that the second off-premises station 4 is in defrost operational mode.
In the present embodiment, the outlet of the first compressor 5 is to the first interface of indoor set 2, the outlet of the second compressor 8 is communicated to the second interface of the second heat exchanger 9 by the second cross valve 10, the first interface of the second heat exchanger 9 and the second interface of indoor set 2 are communicated to the first interface of First Heat Exchanger 6 jointly, and the second interface of First Heat Exchanger 6 is communicated to the import of the first compressor 5 and the second compressor 8 respectively.
Air-conditioner set in the present embodiment and the first off-premises station 3 are in defrost operational mode, and when the second off-premises station 4 is in heating operation mode, the operation principle of air-conditioner set is identical, no longer describes in detail here.
Preferably, be communicated with by the first capillary 25 between the 3rd interface of the first cross valve 7 and the 4th interface of the first cross valve 7, be communicated with by the second capillary 26 between the 3rd interface of the second cross valve 10 and the 4th interface of the second cross valve 10.
The nozzle position place be connected with indoor set 2 of off-premises station is provided with stop valve 27.Specifically, each interface being connected to converter 1 at the first off-premises station 3 is provided with a stop valve 27, each interface being connected to converter 1 at the second off-premises station 4 is provided with a stop valve 27, this stop valve 27 not only can so that overhaul off-premises station, and can when needing to block the corresponding pipeline on converter 1, directly the interface of machine blocks outdoor, reduces the amount that cannot participate in the refrigerant of working cycles, reduce the waste of refrigerant, improve the utilization rate of refrigerant.
Be provided with choke valve in the first interface side of the first interface side of First Heat Exchanger 6 and the second heat exchanger 9, the object of this choke valve is, can improve First Heat Exchanger 6 and the heat exchange efficiency of the second heat exchanger 9 when defrosting further.
Also can choke valve be set at the second interface of indoor set 2, to improve the heat exchange property of air-conditioner set further.
Off-premises station also can be the combination of more than three or three, indoor set also can be one or multiple stage, the operation principle of its concrete syndeton and operation principle and two off-premises stations is similar, only need to carry out adjustment according to the number of off-premises station and the number of indoor set to converter and magnetic valve can realize, no longer describe in detail here.
In conjunction with shown in Figure 4, according to embodiments of the invention, air-conditioner set comprises the first off-premises station 3, second off-premises station 4 and indoor set 2, and the defrosting method that heats of air-conditioner set comprises: detect the need of carrying out defrost; When needs carry out defrost, control refrigerant by converter 1 and flow to, make the first off-premises station 3 and the second off-premises station 4 one of them by defrost mode operation, another one press heating mode operation.
When needs carry out defrost, determine the off-premises station needing to carry out defrost, when when the first off-premises station 3 and the second off-premises station 4, one of them needs defrost, make to need the off-premises station of defrost by defrost mode operation, another one is run according to heating mode; When the first off-premises station 3 and the second off-premises station 4 all need defrost, first make one of them according to defrost mode operation, another one is pressed heating mode and is run, and then makes the complete off-premises station of defrost run by heating mode, does not complete the off-premises station of defrost by defrost mode operation.
By the way, when the normal heating operation of guarantee air-conditioner set, the defrosting in turn of off-premises station can be realized, effectively improves the operating efficiency of air-conditioner set.
When the first off-premises station 3 defrost runs, during the second off-premises station 4 heating operation, refrigerant in first off-premises station 3 flows into the second heat exchanger 9 of the second off-premises station 4 after the first compressor 5 of the first off-premises station 3 flows through First Heat Exchanger 6, then after the second heat exchanger 9 outflow, flow back into the import of the import of the first compressor 5 of the first off-premises station 3 and the second compressor 8 of the second off-premises station 4 respectively, the refrigerant of the second off-premises station 4 flows back into the second heat exchanger 9 of the second compressor 8 after the second compressor 8 and indoor set 2, then after the second heat exchanger 9 outflow, flow back into the import of the import of the first compressor 5 of the first off-premises station 3 and the second compressor 8 of the second off-premises station 4 respectively.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (11)
1. an air-conditioner set, it is characterized in that, the indoor set (2) comprising multiple off-premises station and be communicated with by converter (1) with described off-premises station, described multiple off-premises station comprises the first off-premises station (3) and the second off-premises station (4), described converter (1) changes the flow direction of described refrigerant, and coordinate with described first off-premises station (3) and described second off-premises station (4), described air-conditioner set is made to form the first duty of described first off-premises station (3) and the equal heating operation of described second off-premises station (4), and described first off-premises station (3) and described second off-premises station (4) one of them heating operation, the second duty that another one defrost runs.
2. air-conditioner set according to claim 1, it is characterized in that, described first off-premises station (3) comprises the first compressor (5), First Heat Exchanger (6) and the first cross valve (7), described second off-premises station (4) comprises the second compressor (8), second heat exchanger (9) and the second cross valve (10), described indoor set (2) comprises first interface and the second interface, when described air-conditioner set is in the first duty, the outlet of described first compressor (5) and described second compressor (8) is all communicated to the first interface of described indoor set (2), second interface of described indoor set (2) is communicated to the first interface of described First Heat Exchanger (6) and described second heat exchanger (9) respectively.
3. air-conditioner set according to claim 1, it is characterized in that, described first off-premises station (3) comprises the first compressor (5), First Heat Exchanger (6) and the first cross valve (7), described second off-premises station (4) comprises the second compressor (8), second heat exchanger (9) and the second cross valve (10), described indoor set (2) comprises first interface and the second interface, when described air-conditioner set is in the second duty, the outlet of described first compressor (5) is communicated to the second interface of described First Heat Exchanger (6) by described first cross valve (7), the first interface of described First Heat Exchanger (6) and the second interface of described indoor set (2) are all communicated to the first interface of described second heat exchanger (9), second interface of described second heat exchanger (9) is communicated to the import of described first compressor (5) and described second compressor (8) respectively, the outlet of described second compressor (8) is to the first interface of described indoor set (2).
4. air-conditioner set according to claim 1, it is characterized in that, described first off-premises station (3) comprises the first compressor (5), First Heat Exchanger (6) and the first cross valve (7), described second off-premises station (4) comprises the second compressor (8), second heat exchanger (9) and the second cross valve (10), described indoor set (2) comprises first interface and the second interface, when described air-conditioner set is in the second duty, the outlet of described first compressor (5) is to the first interface of described indoor set (2), the outlet of described second compressor (8) is communicated to the second interface of described second heat exchanger (9) by described second cross valve (10), the first interface of described second heat exchanger (9) and the second interface of described indoor set (2) are communicated to the first interface of described First Heat Exchanger (6) jointly, second interface of described First Heat Exchanger (6) is communicated to the import of described first compressor (5) and described second compressor (8) respectively.
5. air-conditioner set according to claim 1, it is characterized in that, described first off-premises station (3) comprises the first compressor (5), First Heat Exchanger (6) and the first cross valve (7), described second off-premises station (4) comprises the second compressor (8), second heat exchanger (9) and the second cross valve (10), described indoor set (2) comprises first interface and the second interface, described converter (1) comprises the first pipeline (11), second pipe (12), 3rd pipeline (13), 4th pipeline (14), 5th pipeline (15) and the 6th pipeline (16), the first interface of described indoor set (2) is communicated to after described first pipeline (11) and described second pipe (12) cross, the second interface of described indoor set (2) is communicated to after described 3rd pipeline (13) and described 4th pipeline (14) cross, the first interface of described indoor set (2) is communicated to after described 5th pipeline (15) and described 6th pipeline (16) cross,
The outlet of described first compressor (5) is communicated to the first interface of described first cross valve (7) and described 5th pipeline (15) respectively, second orifice of described first cross valve (7) is to the second interface of described First Heat Exchanger (6), 3rd interface of described first cross valve (7) and the import of described first compressor (5) are communicated to described first pipeline (11) jointly, and the first interface of described First Heat Exchanger (6) is communicated to described 3rd pipeline (13);
The outlet of described second compressor (8) is communicated to the first interface of described second cross valve (10) and described 6th pipeline (16) respectively, second orifice of described second cross valve (10) is to the second interface of described second heat exchanger (9), 3rd interface of described second cross valve (10) and the import of described second compressor (8) are communicated to described second pipe (12) jointly, and the first interface of described second heat exchanger (9) is communicated to described 4th pipeline (14).
6. air-conditioner set according to claim 5, it is characterized in that, described first pipeline (11) is provided with the first magnetic valve (17), described second pipe (12) is provided with the second magnetic valve (18), described 3rd pipeline (13) is provided with the 3rd magnetic valve (19), described 4th pipeline (14) is provided with the 4th magnetic valve (20), described 5th pipeline (15) is provided with the 5th magnetic valve (21), described 6th pipeline (16) is provided with the 6th magnetic valve (22), the pipeline that crosses of described first pipeline (11) and described second pipe (12) is provided with the 7th magnetic valve (23), the pipeline that crosses of described 5th pipeline (15) and described 6th pipeline (16) is provided with the 8th magnetic valve (24).
7. the air-conditioner set according to any one of claim 2 to 6, it is characterized in that, be communicated with by the first capillary (25) between 3rd interface of described first cross valve (7) and the 4th interface of described first cross valve (7), be communicated with by the second capillary (26) between the 3rd interface of described second cross valve (10) and the 4th interface of described second cross valve (10).
8. air-conditioner set according to any one of claim 1 to 6, is characterized in that, the nozzle position place be connected with described indoor set (2) of described off-premises station is provided with stop valve (27).
9. air-conditioner set heat a defrosting method, air-conditioner set comprises the first off-premises station (3), the second off-premises station (4) and indoor set (2), it is characterized in that, described in heat defrosting method and comprise:
Detect the need of carrying out defrost;
When needs carry out defrost, control refrigerant by converter (1) and flow to, make the first off-premises station (3) and the second off-premises station (4) one of them by defrost mode operation, another one presses heating mode operation.
10. according to claim 9ly heat defrosting method, it is characterized in that, when needs carry out defrost, determine the off-premises station needing to carry out defrost, when when the first off-premises station (3) and the second off-premises station (4), one of them needs defrost, make to need the off-premises station of defrost by defrost mode operation, another one is run according to heating mode; When the first off-premises station (3) and the second off-premises station (4) all need defrost, first make one of them according to defrost mode operation, another one is pressed heating mode and is run, then make the complete off-premises station of defrost run by heating mode, do not complete the off-premises station of defrost by defrost mode operation.
11. according to claim 9ly heat defrosting method, it is characterized in that, when the first off-premises station (3) defrost runs, during the second off-premises station (4) heating operation, refrigerant in first off-premises station (3) flows into second heat exchanger (9) of the second off-premises station (4) after first compressor (5) of the first off-premises station (3) flows through First Heat Exchanger (6), then after the second heat exchanger (9) outflow, flow back into the import of the import of first compressor (5) of the first off-premises station (3) and second compressor (8) of the second off-premises station (4) respectively, the refrigerant of the second off-premises station (4) flows back into second heat exchanger (9) of the second compressor (8) after the second compressor (8) and indoor set (2), then after the second heat exchanger (9) outflow, flow back into the import of the import of first compressor (5) of the first off-premises station (3) and second compressor (8) of the second off-premises station (4) respectively.
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| CN109945330A (en) * | 2019-03-22 | 2019-06-28 | 珠海格力电器股份有限公司 | Refrigerating system capable of continuously heating and defrosting control method |
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