CN104515195A - Air cooling multi-split air conditioner and control method thereof - Google Patents
Air cooling multi-split air conditioner and control method thereof Download PDFInfo
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- CN104515195A CN104515195A CN201310443862.7A CN201310443862A CN104515195A CN 104515195 A CN104515195 A CN 104515195A CN 201310443862 A CN201310443862 A CN 201310443862A CN 104515195 A CN104515195 A CN 104515195A
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- indoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides an air cooling multi-split air conditioner. The air cooling multi-split air conditioner comprises an outdoor unit, a first indoor unit and a second indoor unit. The outdoor unit further comprises a first four-way valve and a second four-way valve, and the compressor is communicated with the first four-way valve and the second four-way valve through a pipeline. The first four-way valve selectively controls the first indoor unit to be switched between the heating running mode and the cooling running mode. The first four-way valve is matched with the second four-way valve to selectively control the second indoor unit to be switched between the heating running mode and the cooling running mode. The compressor is communicated with the first four-way valve and the second four-way valve through a pipeline, and a first gas pipeline and a second gas pipeline can pass through high-pressure gaseous refrigerants and/or low-pressure gaseous refrigerants in a matched manner according to the cooling and/or heating running mode of the first indoor unit and the cooing and/ or heating running mode of the second indoor unit. A refrigerant reversing device does not need to be additionally arranged in front of the indoor units; and mounting is more convenient, and control is simpler.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of air-cooled multi-connected machine and control method thereof.
Background technology
Multi-connected machine refers to that the indoor set system being arranged on different application space by one or more outdoor unit and multiple stage forms.Multiple on-line system saves installing space with it, energy-conserving and environment-protective, is convenient to the advantages such as control and management, in the general use that business and office space obtain.
Common multi-connected machine function is too single, and the operational mode of interior machine must unanimously could be run.If namely have interior mechanism cold to run in multi-joint unit, in other, machine just can not do heating operation.Otherwise if there is interior machine heating operation, in other, machine can not do refrigerating operaton.Like this, when having the region of heating needs and refrigeration demand at the same time, there is heating needs in the normal office place in such as winter, and machine room has refrigeration demand, and refrigerated area and heating zone just can not be taken into account simultaneously.Which has limited the use of multi-connected machine in particular surroundings or situation.Use the multi-connected machine of common same changes in temperature in addition, interior machine must connect interior machine mode conversion device, complex structure, and cost is also higher.
Summary of the invention
The object of the present invention is to provide a kind of air-cooled multi-connected machine, its can realize different indoor units refrigeration, heat and operate simultaneously, meet the particular requirement that multi-connected machine uses.
For achieving the above object, the invention provides a kind of air-cooled multi-connected machine, it comprises:
Outdoor unit, described outdoor unit comprises compressor, outdoor heat exchanger;
First indoor units;
Second indoor units;
It is characterized in that: described outdoor unit also comprises the first cross valve and the second cross valve, described compressor is by the first cross valve and described second cross valve described in pipeline connection; Described first cross valve selectively controls described first indoor units in the switching heated and freeze between two kinds of operational modes; Described first cross valve coordinates described second cross valve selectively to control described second indoor units in the switching heated and freeze between two kinds of operational modes.
As a further improvement on the present invention, described first indoor units and described second indoor units parallel connection.
As a further improvement on the present invention, when described first indoor units refrigeration, high-pressure gaseous refrigerant flows through described outdoor heat exchanger.
As a further improvement on the present invention, when described first cross valve and described second cross valve are all in primary importance, described first indoor units refrigeration, described second indoor units heats.
As a further improvement on the present invention, when described first cross valve and described second cross valve are all in the second place, described first indoor units heats, described indoor units refrigeration.
As a further improvement on the present invention, when described first cross valve is in primary importance, when described second cross valve is in the second place, described first indoor units refrigeration, described second indoor units refrigeration.
As a further improvement on the present invention, when described first cross valve is in the second place, when described second cross valve is in primary importance, described first indoor units heats, and described second indoor units heats.
Correspondingly, a kind of air-cooled multi-connected machine, comprising:
Outdoor unit, described outdoor unit comprises compressor, outdoor heat exchanger;
First indoor units;
Second indoor units;
It is characterized in that: described outdoor unit also comprises the first cross valve and the second cross valve, described compressor is by the first cross valve and described second cross valve described in pipeline connection; The first gas piping between described first cross valve and described first indoor units and the second gas piping between described second cross valve and described second indoor units can according to the refrigeration of the first indoor units and the second indoor units and/or the operational mode heated ordinatedly by high-pressure gaseous refrigerant and/or low-pressure gaseous refrigerants.
As a further improvement on the present invention, described outdoor unit also comprises tracheae stop valve and liquid pipe stop valve, and described first gas piping and described second gas piping are all provided with described tracheae stop valve.
As a further improvement on the present invention, when described first indoor units refrigeration, when second indoor units heats, what the gas piping between described first cross valve and described first indoor units was carried is low pressure refrigerant, and what the gas piping between the second cross valve and described second indoor units was carried is high pressure refrigerant; When described first indoor units and described second indoor units are all freezed, what the gas piping between described first cross valve and described first indoor units was carried is low pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is low pressure refrigerant; When described first indoor units heats, during described second indoor units refrigeration, what the gas piping between described first cross valve and described first indoor units was carried is high pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is low pressure refrigerant; When described first indoor units and described second indoor units all heat, what the gas piping between described first cross valve and described first indoor units was carried is high pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is high pressure refrigerant.
Correspondingly, a kind of control method of air-cooled multi-connected machine, receives the control signal of the first indoor units and the second indoor units running status, according to the control signal of running status, adjust the position of the first cross valve that is communicated with described first indoor units and/or
The position of the second cross valve be communicated with described second indoor units.
As a further improvement on the present invention, when receiving the control signal that described first indoor units refrigeration and described second indoor units heat, described first cross valve is adjusted and described second cross valve is all in primary importance.
As a further improvement on the present invention, when receiving the control signal that described first indoor units heats with described second indoor units refrigeration, described first cross valve is adjusted and described second cross valve is all in the second place.
As a further improvement on the present invention, when receiving the control signal of described first indoor units refrigeration and described second indoor units refrigeration, adjust described first cross valve and be in primary importance, described second cross valve is in the second place.
As a further improvement on the present invention, receive described first indoor units when heating the control signal heated with described second indoor units, adjust described first cross valve and be in the second place, described second cross valve is in primary importance.
The invention has the beneficial effects as follows: compressor is by pipeline connection first cross valve and the second cross valve, according to the different operational modes of interior machine, the first gas piping between first cross valve and the first indoor units and the second gas piping between the second cross valve and the second indoor units can according to the refrigeration of the first indoor units and the second indoor units and/or the operational mode heated ordinatedly by high-pressure gaseous refrigerant and/or low-pressure gaseous refrigerants, also without the need to installing refrigerant reversing arrangement additional before indoor units, install more convenient, control simpler.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air-cooled multi-connected machine detailed description of the invention of the present invention one.
Detailed description of the invention
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
The detailed description of the invention of the air-cooled multi-connected machine of ginseng shown in Fig. 1.Air-cooled multi-connected machine is divided into outdoor section and indoor section.Indoor section, according to the difference connecting tracheae stop valve, is divided into the first indoor units 10 and the second indoor units 20 to form, and the first indoor units 10 and the parallel connection of the second indoor units 20, outdoor section is made up of outdoor unit 30.Wherein, outdoor unit 30 is connected by liquid line 40, first gas piping 41 and the second gas piping 42 with two indoor units, and the first gas piping 41 and the second gas piping 42 can according to the refrigeration of the first indoor units and the second indoor units and/or the operational mode heated ordinatedly by high-pressure gaseous refrigerant and/or low-pressure gaseous refrigerants.
Outdoor unit 30 comprises the parts compositions such as the first cross valve 4WV1, the second cross valve 4WV2, compressor 31, gas-liquid separator 32, outdoor heat converter group 33, outdoor main throttling arrangement 34, first indoor units tracheae stop valve 35, liquid pipe stop valve 36 and the second indoor units tracheae stop valve 37.Wherein, the first indoor units tracheae stop valve 35 is arranged on the first gas piping 41, and liquid pipe stop valve 36 is arranged on liquid line 40, and the second indoor units tracheae stop valve 37 is arranged on the second gas piping 42.In addition, the parts such as outdoor unit 30 all right other parallel connection compressor, oil eliminator, fluid reservoir, supercooling gas, oil circuit Controlling solenoid valve, the explanation feature figure of the present invention that attaches most importance to does not illustrate.
First cross valve 4WV1 and the second cross valve 4WV2 includes d mouth, c mouth, e mouth, s mouth, and cross valve 4WV has two kinds of positions to change, and controls its conversion by the control system of multi-connected machine.When setting cross valve 4WV is primary importance, the d mouth of cross valve 4WV is communicated with c mouth, and e mouth is communicated with s mouth; When setting cross valve 4WV is the second place, the d mouth of cross valve 4WV is communicated with e mouth, and c mouth is communicated with s mouth.Wherein, the e mouth shutoff of the second cross valve 4WV2, or be communicated with s mouth in order to avoid returning liquid by longer capillary.
It is worth mentioning that, the control system of multi-connected machine is by the conversion of control first cross valve 4WV1 and the second cross valve 4WV2 in primary importance and the second place, by the interlock of indoor units, the interior mechanism cold and/or heat realizing the first indoor units 10 and the second indoor units 20 difference group runs simultaneously, but must be consistent with the running status of machine in group.The switching that first cross valve 4WV1 selectively controls heating of the first indoor units 10 and freezes between two kinds of operational modes; The switching that first cross valve 4WV1 coordinates the second cross valve 4WV2 selectively to control heating of the second indoor units 20 and freeze between two kinds of operational modes.
First indoor units 10 and the second indoor units 20 1 have four kinds of operational modes:
First indoor units 10 is freezed, and the second indoor units 20 heats;
First indoor units 10 is freezed, and the second indoor units 20 is freezed;
First indoor units 10 heats, and the second indoor units 20 is freezed;
First indoor units 10 heats, and the second indoor units 20 heats.
When the first indoor units 10 is freezed, when second indoor units 20 heats, second cross valve 4WV2 is in primary importance, the first cross valve 4WV1 is in primary importance, namely the d mouth of the first cross valve 4WV1 is communicated with c mouth, e mouth is communicated with s mouth, the d mouth of the second cross valve 4WV2 is communicated with c mouth, and e mouth is communicated with s mouth, and now the flow direction of refrigerant is as follows:
The part of high-pressure gaseous refrigerant compressed through compressor 31 flows into the d mouth of the first cross valve 4WV1 from the gas outlet of compressor 31, flow out from c mouth and enter outdoor heat exchanger group 33 again, now, outdoor heat exchanger group 33 plays condenser, convert high-pressure gaseous refrigerant to high-pressure liquid refrigerant, high-pressure liquid refrigerant flows through outdoor main throttling arrangement 34, enter liquid pipeline 40, flow through liquid pipe stop valve 36, flow into the first indoor units 10, refrigerant becomes gaseous state from liquid state in the first indoor units 10, realize the first indoor units 10 refrigeration mode, low-pressure gaseous refrigerant after the evaporation of being flowed out by first indoor units 10 of freezing flows into the first gas piping 41, flow through the first indoor units tracheae stop valve 35, the low-pressure gaseous refrigerant of the first gas piping 41 li flows into the e mouth of the first cross valve 4WV1, flow out from s mouth, the air entry of compressor 31 is got back to through gas-liquid separator 32, realize the kind of refrigeration cycle of the first indoor units 10.
The another part of high-pressure gaseous refrigerant compressed through compressor 31 flows into the d mouth of the second cross valve 4WV2 from the venthole of compressor 31, flow out from c mouth and enter the second gas piping 42 again, flow through the second indoor units tracheae stop valve 37, the high-pressure gaseous refrigerant of the second gas piping 42 li flows into the second indoor units 20, realize the heating mode of the second indoor units 20, the condensed liquid refrigerants flowed out by the second indoor units 20 heated flows into liquid pipeline 40, and what realize the second indoor units 20 heats circulation.
First indoor units 10 is freezed, when second indoor units 20 is freezed, second cross valve 4WV2 is in the second place, the first cross valve 4WV1 is in primary importance, namely the d mouth of the second cross valve 4WV2 is communicated with e mouth, c mouth is communicated with s mouth, the d mouth of the first cross valve 4WV1 is communicated with c mouth, and e mouth is communicated with s mouth, and now the flow direction of refrigerant is as follows:
The high-pressure gaseous refrigerant compressed through compressor 31 to flow into the d mouth of the first cross valve 4WV1 from the gas outlet of compressor 31, flow out from c mouth and enter outdoor heat exchanger group 33 again, now, outdoor heat exchanger group 33 plays condenser, convert high-pressure gaseous refrigerant to high-pressure liquid refrigerant, high-pressure liquid refrigerant flows through outdoor main throttling arrangement 34, enter liquid pipeline 40, flow through liquid pipe stop valve 36, a part for the high-pressure liquid refrigerant of liquid pipeline 40 li flows into the first indoor units 10, refrigerant becomes gaseous state from liquid state, realize the first indoor units 10 refrigeration mode, low-pressure gaseous refrigerant after the evaporation of being flowed out by first indoor units 10 of freezing flows into the first gas piping 41, flow through the first indoor units tracheae stop valve 35, the low-pressure gaseous refrigerant of the first gas piping 41 li flows into the e mouth of the first cross valve 4WV1, flow out from s mouth, the air entry of compressor 31 is got back to through gas-liquid separator 32, realize the kind of refrigeration cycle of the first indoor units 10.
Another part of the high-pressure liquid refrigerant of liquid pipeline 40 li flows into the second indoor units 20, high-pressure liquid refrigerant evaporates and converts low-pressure gaseous refrigerant in the second indoor units 20, realize the refrigeration mode of the second indoor units 20, low-pressure gaseous refrigerant flows into the second gas piping 42, flow through the second indoor units tracheae stop valve 37, flow into the c mouth of the second cross valve 4WV2, flow out from s mouth, the air entry of compressor 31 got back to by gas-liquid separator 32, realizes the kind of refrigeration cycle of the second indoor units 20.
First indoor units 10 heats, when second indoor units 20 is freezed, second cross valve 4WV2 is in the second place, the first cross valve 4WV1 is in the second place, namely the d mouth of the second cross valve 4WV2 is communicated with e mouth, c mouth is communicated with s mouth, the d mouth of the first cross valve 4WV1 is communicated with e mouth, and c mouth is communicated with s mouth, and now the flow direction of refrigerant is as follows:
The high-pressure gaseous refrigerant compressed through compressor 31 to flow into the d mouth of the first cross valve 4WV1 from the gas outlet of compressor 31, flow out from e mouth and enter the first gas piping 41, the high-pressure gaseous refrigerant of the first gas piping 41 li flows through the first indoor units tracheae stop valve 35, enter the first indoor units 10, realize the first indoor units 10 heating mode.
High-pressure gaseous refrigerant is converted to liquid refrigerants after condensation in the first indoor units 10, flow into liquid pipeline 40, a part for liquid refrigerants flows into the second indoor units 20, liquid refrigerants evaporates and converts low-pressure gaseous refrigerant in the second indoor units 20, realize the refrigeration mode of the second indoor units 20, low-pressure gaseous refrigerant flows into the second gas piping 42 again, flow through the second indoor units tracheae stop valve 37, flow into the c mouth of the second cross valve 4WV2, flow out from s mouth, get back to the air entry of compressor 31 through gas-liquid separator 32; Another part of liquid refrigerants flows directly into outdoor main throttling arrangement 34 from liquid pipeline 40, flow into outdoor heat exchanger group 33 again, gaseous coolant is flashed to through outdoor heat exchanger group 33, flow into the c mouth of the first cross valve 4WV1, flow out from s mouth, get back to the air entry of compressor 31 through gas-liquid separator 32, what realize the first indoor units 10 heats circulation and the second indoor units 20 kind of refrigeration cycle.
First indoor units 10 heats, when second indoor units 20 heats, second cross valve 4WV2 is in primary importance, the first cross valve 4WV1 is in the second place, namely the d mouth of the second cross valve 4WV2 is communicated with c mouth, e mouth is communicated with s mouth, the d mouth of the first cross valve 4WV1 is communicated with e mouth, and c mouth is communicated with s mouth, and now the flow direction of refrigerant is as follows:
Through a part of d mouth flowing into the first cross valve 4WV1 from the gas outlet of compressor 31 of high-pressure gaseous refrigerant that compressor 31 compresses, flow out from e mouth and enter the first gas piping 41, the high-pressure gaseous refrigerant of the first gas piping 41 li flows through the first indoor units tracheae stop valve 35, enter the first indoor units 10, realize the first indoor units 10 heating mode.
The high-pressure gaseous refrigerant another part compressed through compressor 31 to flow into the d mouth of the second cross valve 4WV2 from the gas outlet of compressor 31, flow out from c mouth and enter the second gas piping 42, high-pressure gaseous refrigerant in second gas piping 42 flows through the second indoor units tracheae stop valve 37, enter the second indoor units 20, realize the second indoor units 20 heating mode.
High-pressure gaseous refrigerant converts liquid refrigerants in the first indoor units 10 heated and the second indoor units 20 condensation and all flows into liquid pipeline 40, flow through liquid pipe stop valve 36, main throttling arrangement 34 and outdoor heat exchanger group 33 through outdoor, liquid refrigerants converts gaseous coolant in outdoor heat exchanger group 33 evaporation, flow into the c mouth of the first cross valve 4WV1, flow out from s mouth, get back to the air entry of compressor 31 through gas-liquid separator 32, what realize the first indoor units 10 heats the circulation heated with the second indoor units 20.
A control method for air-cooled multi-connected machine, receives the control signal of the first indoor units 10 and the second indoor units 20 running status, according to the control signal of running status, adjust the position of the first cross valve that is communicated with described first indoor units and/or
The position of the second cross valve be communicated with described second indoor units.
When receiving the control signal that the first indoor units 10 is freezed and the second indoor set 20 groups heats, adjust the first cross valve 4WV1 and the second cross valve 4WV2 is in primary importance.The d mouth of the first cross valve 4WV1 is communicated with c mouth, and e mouth is communicated with s mouth, and the d mouth of the second cross valve 4WV2 is communicated with c mouth, and e mouth is communicated with s mouth.
Receive the first indoor units 10 when heating the signal freezed with the second indoor units 20, adjust the first cross valve 4WV1 and the second cross valve 4WV2 is in the second place.The d mouth of the first cross valve 4WV1 is communicated with e mouth, and c mouth is communicated with s mouth, and the d mouth of the second cross valve 4WV2 is communicated with e mouth, and c mouth is communicated with s mouth.
When receiving the control signal that the first indoor units 10 is freezed and the second indoor units 20 is freezed, adjust the second cross valve 4WV2 and be in the second place, the first cross valve 4WV1 is in primary importance.The d mouth of the second cross valve 4WV2 is communicated with e mouth, and c mouth is communicated with s mouth, and the d mouth of the first cross valve 4WV1 is communicated with c mouth, and e mouth is communicated with s mouth.
Receive the first indoor units 10 when heating the control signal heated with the second indoor units 20, adjust the second cross valve 4WV2 and be in primary importance, the first cross valve 4WV1 is in the second place.The d mouth of the second cross valve 4WV2 is communicated with c mouth, and e mouth is communicated with s mouth, and the d mouth of the first cross valve 4WV1 is communicated with e mouth, and c mouth is communicated with s mouth.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (15)
1. an air-cooled multi-connected machine, comprising:
Outdoor unit, described outdoor unit comprises compressor, outdoor heat exchanger;
First indoor units;
Second indoor units;
It is characterized in that: described outdoor unit also comprises the first cross valve and the second cross valve, described compressor is by the first cross valve and described second cross valve described in pipeline connection; Described first cross valve selectively controls described first indoor units in the switching heated and freeze between two kinds of operational modes; Described first cross valve coordinates described second cross valve selectively to control described second indoor units in the switching heated and freeze between two kinds of operational modes.
2. air-cooled multi-connected machine according to claim 1, is characterized in that: described first indoor units and described second indoor units parallel connection.
3. air-cooled multi-connected machine according to claim 1, is characterized in that: when described first indoor units refrigeration, high-pressure gaseous refrigerant flows through described outdoor heat exchanger.
4. air-cooled multi-connected machine according to claim 1, is characterized in that: when described first cross valve and described second cross valve are all in primary importance, and described first indoor units refrigeration, described second indoor units heats.
5. air-cooled multi-connected machine according to claim 1, is characterized in that: when described first cross valve and described second cross valve are all in the second place, described first indoor units heats, described indoor units refrigeration.
6. air-cooled multi-connected machine according to claim 1, is characterized in that: when described first cross valve is in primary importance, when described second cross valve is in the second place, described first indoor units refrigeration, described second indoor units refrigeration.
7. air-cooled multi-connected machine according to claim 1, is characterized in that: when described first cross valve is in the second place, when described second cross valve is in primary importance, described first indoor units heats, and described second indoor units heats.
8. an air-cooled multi-connected machine, comprising:
Outdoor unit, described outdoor unit comprises compressor, outdoor heat exchanger;
First indoor units;
Second indoor units;
It is characterized in that: described outdoor unit also comprises the first cross valve and the second cross valve, described compressor is by the first cross valve and described second cross valve described in pipeline connection; The first gas piping between described first cross valve and described first indoor units and the second gas piping between described second cross valve and described second indoor units can according to the refrigeration of the first indoor units and the second indoor units and/or the operational mode heated ordinatedly by high-pressure gaseous refrigerant and/or low-pressure gaseous refrigerants.
9. air-cooled multi-connected machine according to claim 8, is characterized in that: described outdoor unit also comprises tracheae stop valve and liquid pipe stop valve, and described first gas piping and described second gas piping are all provided with described tracheae stop valve.
10. air-cooled multi-connected machine according to claim 8, it is characterized in that: when described first indoor units refrigeration, when described second indoor units heats, what the gas piping between described first cross valve and described first indoor units was carried is low pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is high pressure refrigerant; When described first indoor units and described second indoor units are all freezed, what the gas piping between described first cross valve and described first indoor units was carried is low pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is low pressure refrigerant; When described first indoor units heats, during the second indoor units refrigeration, what the gas piping between described first cross valve and described first indoor units was carried is high pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is low pressure refrigerant; When described first indoor units and described second indoor units all heat, what the gas piping between described first cross valve and described first indoor units was carried is high pressure refrigerant, and what the gas piping between described second cross valve and described second indoor units was carried is high pressure refrigerant.
The control method of 11. 1 kinds of air-cooled multi-connected machines, it is characterized in that: the control signal receiving the first indoor units and the second indoor units running status, according to the control signal of running status, adjust the position of the first cross valve that is communicated with described first indoor units and/or
The position of the second cross valve be communicated with described second indoor units.
The control method of 12. air-cooled multi-connected machines according to claim 11, it is characterized in that: when receiving the control signal that described first indoor units refrigeration and described second indoor units heat, adjust described first cross valve and described second cross valve is all in primary importance.
The control method of 13. air-cooled multi-connected machines according to claim 11, it is characterized in that: when receiving the control signal that described first indoor units heats with described second indoor units refrigeration, adjust described first cross valve and described second cross valve is all in the second place.
The control method of 14. air-cooled multi-connected machines according to claim 11, it is characterized in that: when receiving the control signal of described first indoor units refrigeration and described second indoor units refrigeration, adjust described first cross valve and be in primary importance, described second cross valve is in the second place.
The control method of 15. air-cooled multi-connected machines according to claim 11, it is characterized in that: receive described first indoor units when heating the control signal heated with described second indoor units, adjust described first cross valve and be in the second place, described second cross valve is in primary importance.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674402A (en) * | 2016-03-23 | 2016-06-15 | 广东美的暖通设备有限公司 | Multiple-on-line system and mode switching control method thereof |
| CN107178833A (en) * | 2017-05-31 | 2017-09-19 | 珠海格力电器股份有限公司 | Heat recovery outer unit system and air conditioning system |
| WO2024154323A1 (en) * | 2023-01-20 | 2024-07-25 | 三菱電機株式会社 | Refrigeration cycle device |
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| CN107178833B (en) * | 2017-05-31 | 2023-12-05 | 珠海格力电器股份有限公司 | Heat recovery external machine system and air conditioning system |
| WO2024154323A1 (en) * | 2023-01-20 | 2024-07-25 | 三菱電機株式会社 | Refrigeration cycle device |
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