CN107477902B - Sequential independent refrigerating and heating multi-split air conditioner - Google Patents
Sequential independent refrigerating and heating multi-split air conditioner Download PDFInfo
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- CN107477902B CN107477902B CN201710664182.6A CN201710664182A CN107477902B CN 107477902 B CN107477902 B CN 107477902B CN 201710664182 A CN201710664182 A CN 201710664182A CN 107477902 B CN107477902 B CN 107477902B
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- indoor
- stop valve
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- outdoor
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 238000005057 refrigeration Methods 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The sequential independent refrigerating and heating multi-split air conditioner comprises an outdoor unit, at least two indoor units, a compressor, a throttling device, a four-way reversing valve, a plurality of stop valves and a refrigerant main pipe; one end of the indoor heat exchanger of the indoor unit is connected with the throttling devices, and the other ends of all the throttling devices are connected to the outdoor unit through the refrigerant main pipe; in the indoor unit, the other end of each indoor unit is connected with an indoor stop valve, and the other end of the adjacent indoor stop valve is connected with a second indoor stop valve until the other end of the adjacent indoor stop valve is connected with the second end of the outdoor stop valve. A copper pipe is added at the last indoor unit and is connected with a second indoor stop valve in series to be connected with the second end of the outdoor stop valve of the outdoor unit; the last indoor unit is the last indoor unit when the indoor units are connected in a multi-split mode.
Description
The technical field is as follows:
the invention relates to the technical field of air conditioners. In particular to a sequential independent refrigerating and heating multi-split air conditioner.
Background art:
with the development of society, people have higher and higher requirements on indoor air quality. As a common air conditioner, the multi-split air conditioner has more and more flexible requirements on the multi-split air conditioner in various industries. The function of each room is different and the requirements for the air conditioning mode are also different. Some require refrigeration and some require heating. For example, in an office building in winter, a data room needs a cooling mode, and an office needs a heating mode.
How to save energy by utilizing different requirements of air conditioners on cold and hot conditions and different requirements of air conditioner modes is a considerable problem.
The invention content is as follows:
the technical scheme of the invention is that energy is saved by utilizing different requirements of a plurality of air-conditioning units on different cooling and heating requirements in an air-conditioning mode, and a sequential independent refrigerating and heating multi-split air-conditioner is provided.
The invention has the technical scheme that the sequential independent refrigerating and heating multi-split air conditioner comprises an outdoor unit, at least two indoor units, a compressor, a throttling device, a four-way reversing valve, a plurality of stop valves and refrigerant main pipes; one end of the indoor heat exchanger of the indoor unit is connected with the throttling devices, and the other ends of all the throttling devices are connected to the outdoor unit through the refrigerant main pipe; in the indoor unit, the other end of each indoor unit is connected with an indoor stop valve, and the other end of the adjacent indoor stop valve is connected with a second indoor stop valve until the other end of the adjacent indoor stop valve is connected with the second end of the outdoor stop valve. A copper pipe (also used as a refrigerant main pipe) is added at the last indoor unit and is connected with a second indoor stop valve in series to be connected with the second end of the outdoor stop valve of the outdoor unit. The outdoor unit is connected in series with an outdoor stop valve, a compressor and a four-way reversing valve;
each refrigerant main pipe (refrigerant connecting pipe) of the multi-split air conditioner is additionally provided with a stop valve; the last indoor unit is the last indoor unit when the indoor units are connected in a multi-split mode.
The sequentially selected cooling mode and heating mode is that the first indoor heat exchanger (starting sequence) is in a single mode and is always opposite to the heat exchange mode of the outdoor heat exchanger. The second indoor heat exchanger machine selection mode determines the subsequent indoor machine function mode, and if the second indoor heat exchanger machine selection mode is the same as the first indoor heat exchanger machine function mode, the third indoor heat exchanger machine function mode selection is not influenced; and if the function mode of the second indoor heat exchanger is opposite to that of the first indoor heat exchanger, the third indoor unit and the indoor units behind the third indoor unit can only select the function mode which is the same as the function mode of the second indoor heat exchanger. And so on, the selection pattern of the third station is similar to the second station.
Indoor units and outdoor units are both heat exchangers (indoor or outdoor), and may generate heat through evaporative cooling or condensation.
The multi-split air conditioner provided by the invention is characterized in that in a refrigerant system, the connection form of the original multi-split air conditioner is not changed, only one copper pipe is added at the last indoor unit to be connected with one outdoor unit, and then the indoor units sequentially select a refrigerating or heating mode through valve switches, so that the indoor units can simultaneously refrigerate or heat. The basic principle is that the flow direction of the refrigerant is changed by opening and closing a valve, so that the heat exchange quantity of the outdoor unit is transferred to the indoor, and the energy is utilized to realize refrigeration or heating, thereby achieving the purpose of energy conservation.
The sequential independent refrigeration and heating type multi-split air conditioner adopts the mode that the first indoor heat exchanger (starting sequence) is in a single mode and is always opposite to the heat exchange mode of the outdoor heat exchanger. The second indoor heat exchanger machine selection mode determines the subsequent indoor machine function mode, and if the second indoor heat exchanger machine selection mode is the same as the first indoor heat exchanger machine function mode, the third indoor heat exchanger machine function mode selection is not influenced; and if the function mode of the second indoor heat exchanger is opposite to that of the first indoor heat exchanger, the third indoor unit and the indoor units behind the third indoor unit can only select the function mode which is the same as the function mode of the second indoor heat exchanger. And so on, the selection pattern of the third station is similar to the second station.
The invention has the advantages that only one outdoor unit is adopted, then a plurality of indoor units sequentially select the refrigerating or heating mode through the valve switch, and the simultaneous refrigerating or heating of each indoor unit is realized. The flow direction of the refrigerant is changed through the opening and closing of the valve, so that the heat exchange quantity of the outdoor unit is transferred to the indoor space, and the energy is saved by utilizing the different requirements of the multiple air-conditioning units on cooling and heating and the different requirements on cooling or heating in the air-conditioning mode.
Description of the drawings:
fig. 1 is a schematic diagram of a sequential independent refrigerating and heating multi-split air conditioner.
The specific implementation mode is as follows:
referring to fig. 1, the sequential independent cooling and heating multi-split air-conditioner system of the present invention includes a compressor 1, a first indoor heat exchanger 21, a second indoor heat exchanger 22, a third indoor heat exchanger 23, an outdoor heat exchanger 24, a throttling device 31, a throttling device 32, a throttling device 33, a four-way reversing valve 4, first indoor cut-off valves 51, 52, 53, an outdoor cut-off valve 54, second indoor cut-off valves 512, 523, 534, and air-conditioner connecting pipes. A copper pipe is added between the last indoor heat exchanger and the outdoor heat exchanger, and a second indoor stop valve 534 is added on the copper pipe. The multiple on-line machine can increase the number of indoor heat exchangers according to the number of rooms, and needs to increase a first indoor stop valve and a second indoor stop valve when the number of the indoor heat exchangers is increased.
First embodiment
When the unit is in the full refrigeration mode, the four-way reversing valve 4 is adjusted to the refrigeration mode, the stop valve 534 is closed, the stop valves 512 and 523 are opened, the stop valve 54 connected with the outdoor heat exchanger is opened, and the stop valve connected with the indoor heat exchanger is opened and closed according to the requirements of indoor rooms.
Second embodiment
When the unit is in the full heating mode, the four-way reversing valve 4 is adjusted to the heating mode, the stop valve 534 is closed, the stop valves 512 and 523 are opened, the stop valve 54 connected with the outdoor heat exchanger is opened, and the stop valve connected with the indoor heat exchanger is opened and closed according to the requirements of indoor rooms.
Third embodiment
When the required refrigerating capacity is larger than the required heating capacity
The unit is in a main refrigeration mode, the four-way reversing valve 4 is adjusted to the refrigeration mode, the stop valve 534 is opened, the stop valve 512 is opened, the stop valve 523 is closed, the trunk stop valve 54 connected with the outdoor heat exchanger is opened, the stop valve 51 and the stop valve 52 connected with the indoor heat exchanger can be opened and closed according to the requirements of indoor rooms, and the stop valve 53 is opened. At this time, the indoor heat exchangers 21 and 22 are in the cooling mode, and the indoor heat exchanger 23 is in the heating mode.
When the required refrigerating capacity is equal to the required heating capacity
The unit is in a main refrigeration mode, the four-way reversing valve 4 is adjusted to the refrigeration mode, the stop valve 534 is opened, the stop valve 512 is closed, the stop valve 523 is closed, the stop valve 54 connected with the outdoor heat exchanger is closed, the stop valve 51 is opened, and the stop valve 53 is opened. At this time, the indoor heat exchanger 21 is in the cooling mode and the indoor heat exchanger 23 is in the heating mode, and the indoor heat exchanger 22 can control the opening and closing of the stop valves 512 and 523 and the opening and closing of the stop valve 52 according to indoor requirements, thereby controlling the heat exchange mode of the indoor heat exchanger 22.
When the required refrigerating capacity is less than the required heating capacity
The unit is in a main heating mode in the state, the four-way reversing valve 4 is adjusted to the heating mode, and the opening and closing of the valve are similar to those when the required refrigerating capacity is larger than the required heating capacity.
Claims (1)
1. The sequential independent refrigerating and heating type multi-split air conditioner comprises an outdoor unit (24), at least two indoor units (21, 22 and 23), a compressor (1), throttling devices (31, 32 and 33), a four-way reversing valve (4), a plurality of stop valves and refrigerant main pipes; the system is characterized in that one end of each indoor unit is connected with one end of a throttling device, and the second end of each throttling device is connected in parallel with a pipeline; the second end of each indoor unit is connected with one end of a stop valve, and the second end of the stop valve is connected to the second end of the stop valve of the outdoor unit through a cooling medium main pipe; one end of the outdoor unit is connected with the pipeline, and the second end of the outdoor unit (24) is connected with the first end of the outdoor unit stop valve; the second end of the first indoor unit connected with the stop valve is connected with the second end of the stop valve connected with the second indoor unit through a refrigerant trunk pipe, and the refrigerant trunk pipe is sequentially connected with the second end of the stop valve of the outdoor unit till the second end of the stop valve of the outdoor unit, namely the second end of the stop valve connected with the last indoor unit is added; the compressor and the four-way reversing valve are connected in series;
the last indoor unit is the last indoor unit connected in a multi-online manner; the second end of the stop valve connected with the first indoor unit is also connected with the inlet of the four-way reversing valve through a second refrigerant main pipe, and the outlet of the four-way reversing valve is connected with the second end of the stop valve of the outdoor unit through a pipeline;
the sequential independent refrigerating and heating multi-split air conditioner sequentially selects a refrigerating mode and a heating mode, wherein the starting sequence of the first indoor unit is a single mode, and the single mode is always opposite to the heat exchange mode of the outdoor heat exchanger; the second indoor machine selection mode determines the subsequent indoor machine function mode, and if the second indoor machine has the same function mode as the first indoor machine, the function mode selection of the third indoor machine is not influenced; if the function mode of the second indoor unit is opposite to that of the first indoor unit, the third and the following indoor units can only select the function mode which is the same as the function mode of the second indoor unit;
the indoor machine and the outdoor machine are both indoor or outdoor heat exchangers which can generate heat through evaporation refrigeration or condensation;
and a stop valve is added on each refrigerant main pipe connected with the indoor units, namely a stop valve (512, 523) is added on each refrigerant main pipe between the second ends of the stop valves connected with the indoor units, and a stop valve (534) is added on each refrigerant main pipe between the second end of the stop valve connected with the last indoor unit and the second end of the stop valve of the outdoor heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664182.6A CN107477902B (en) | 2017-08-02 | 2017-08-02 | Sequential independent refrigerating and heating multi-split air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664182.6A CN107477902B (en) | 2017-08-02 | 2017-08-02 | Sequential independent refrigerating and heating multi-split air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107477902A CN107477902A (en) | 2017-12-15 |
| CN107477902B true CN107477902B (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710664182.6A Active CN107477902B (en) | 2017-08-02 | 2017-08-02 | Sequential independent refrigerating and heating multi-split air conditioner |
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| Country | Link |
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| CN (1) | CN107477902B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611990B (en) * | 2018-12-19 | 2021-01-05 | 宁波市海智普智能科技有限公司 | Efficient energy-saving type integrated air conditioning unit for kitchen and bathroom and control method thereof |
| CN114322116A (en) * | 2022-01-21 | 2022-04-12 | 珠海格力电器股份有限公司 | Multi-split air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01302074A (en) * | 1988-05-30 | 1989-12-06 | Matsushita Refrig Co Ltd | Multi-room type air conditioner |
| CN1490570A (en) * | 2002-08-24 | 2004-04-21 | Lg������ʽ���� | Multichannel air conditioner with cooling and heating simultaneously |
| CN1493828A (en) * | 2002-08-24 | 2004-05-05 | Lg������ʽ���� | Multipath air conditioner and its operation method |
| CN101131266A (en) * | 2006-08-22 | 2008-02-27 | 珠海格力电器股份有限公司 | Heat recovery multi-split air conditioner |
| CN101865555B (en) * | 2010-06-29 | 2012-10-03 | 广东志高空调有限公司 | Multi-split air-conditioner capable of simultaneously refrigerating and heating |
-
2017
- 2017-08-02 CN CN201710664182.6A patent/CN107477902B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01302074A (en) * | 1988-05-30 | 1989-12-06 | Matsushita Refrig Co Ltd | Multi-room type air conditioner |
| CN1490570A (en) * | 2002-08-24 | 2004-04-21 | Lg������ʽ���� | Multichannel air conditioner with cooling and heating simultaneously |
| CN1493828A (en) * | 2002-08-24 | 2004-05-05 | Lg������ʽ���� | Multipath air conditioner and its operation method |
| CN101131266A (en) * | 2006-08-22 | 2008-02-27 | 珠海格力电器股份有限公司 | Heat recovery multi-split air conditioner |
| CN101865555B (en) * | 2010-06-29 | 2012-10-03 | 广东志高空调有限公司 | Multi-split air-conditioner capable of simultaneously refrigerating and heating |
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| Publication number | Publication date |
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| CN107477902A (en) | 2017-12-15 |
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Effective date of registration: 20200608 Address after: Room 405-2, building B, building 90-1, Haifu lane, Qinhuai District, Nanjing City, Jiangsu Province Applicant after: JIANGSU RONGZHUANG TECHNOLOGY Co.,Ltd. Address before: 211101 Jiangning City, Nanjing province Shuanglong street, No. 2, Applicant before: PLA University OF SCIENCE AND TECHNOLOGY |
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Inventor after: Wei Bao Inventor after: Miao Xiaoping Inventor after: Zang Zhengbao Inventor after: Wei Zijie Inventor after: Sheng Jun Inventor after: Shao Guangming Inventor before: Wei Bao Inventor before: Miao Xiaoping Inventor before: Peng Fusheng Inventor before: Zang Zhengbao Inventor before: Wei Zijie Inventor before: Sheng Jun Inventor before: Shao Guangming |