CN104344599B - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
- Publication number
- CN104344599B CN104344599B CN201310344521.4A CN201310344521A CN104344599B CN 104344599 B CN104344599 B CN 104344599B CN 201310344521 A CN201310344521 A CN 201310344521A CN 104344599 B CN104344599 B CN 104344599B
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- China
- Prior art keywords
- temperature heat
- heat exchanger
- branch
- exchanging
- conditioning system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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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
- F25B41/00—Fluid-circulation 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention provides an air conditioning system comprising: the compressor, the medium temperature heat exchanger, the high temperature heat exchanger, the low temperature heat exchanger and the throttling device are communicated to form a refrigerant circulation loop, the medium temperature heat exchanger and the high temperature heat exchanger are connected in parallel, a branch where the medium temperature heat exchanger is located is a first branch, a branch where the high temperature heat exchanger is located is a second branch, and the compressor further comprises a first pressure reduction device which is arranged on the first branch and located between the medium temperature heat exchanger and an exhaust port of the compressor. The pressure reduction device is arranged in front of the medium-temperature heat exchanger of the air conditioning system, so that refrigerants with different pressures are provided for the medium-temperature heat exchanger and the high-temperature heat exchanger, the energy efficiency reduction caused by uneven distribution of the refrigerants is avoided, the system control is optimized, and the energy consumption is saved.
Description
Technical field
The present invention relates to field of Refrigeration and Air-conditioning, more particularly to a kind of air-conditioning system.
Background technology
As the improvement of people's living standards, the functional requirement to air-conditioning is also more and more various, current air-conditioning system exists
Can also have the function of providing hot water while refrigeration or heating are provided.But at present in air-conditioning system, air-conditioning heating and heating
Water uses same operating mode, and actually high pressure needed for air-conditioning heating is far below the high pressure of water heating, in this way using a kind of
The control mode of operating mode may result in a large amount of refrigerants and enter heating water- to-water heat exchanger, lead to the reduction of air conditioning capacity, to ensure
Air conditioning capacity, compressor need to export more abilities, this results in complete machine power excessively high, and energy consumption is excessively high.
Invention content
Present situation for the above-mentioned prior art, technical problem to be solved by the present invention lies in provide a kind of air-conditioning system, keep away
Having exempted from efficiency caused by refrigerant is unevenly distributed reduces, and optimizes system control, saves energy consumption.
Air-conditioning system disclosed by the invention, including：Compressor, mid temperature heat exchanger, high-temperature heat-exchanging, cryogenic heat exchanger and section
Device is flowed, the compressor, mid temperature heat exchanger, high-temperature heat-exchanging, cryogenic heat exchanger are connected to form refrigerant circulation with throttling set
Circuit, the mid temperature heat exchanger and high-temperature heat-exchanging are in parallel, and branch where the mid temperature heat exchanger is the first branch, the high temperature
Branch is the second branch where heat exchanger, further includes the first dropping equipment, is arranged in the first branch, and the medium temperature is located at
Between heat exchanger and exhaust outlet of compressor.
Preferably, further include the second dropping equipment, second dropping equipment is arranged in the second branch, is changed positioned at high temperature
Between hot device and exhaust outlet of compressor.
Preferably, the main coolant loop that the throttling set is arranged between the cryogenic heat exchanger and the parallel branch
On.
Preferably, it is additionally provided with flow regulator between the throttling set and the mid temperature heat exchanger.
Preferably, it is additionally provided with flow regulator between the throttling set and the high-temperature heat-exchanging.
Preferably, the throttling set includes first throttling device and second throttling device, and the first throttling device is set
It sets in the first branch, between mid temperature heat exchanger and the cryogenic heat exchanger；The second throttling device setting exists
In the second branch, between the high-temperature heat-exchanging and the cryogenic heat exchanger.
Preferably, it is provided with flow regulator between the first throttling device and the mid temperature heat exchanger.
Preferably, it is provided with flow regulator between the second throttling device and the high-temperature heat-exchanging.
Preferably, the mid temperature heat exchanger import is provided with first pressure sensor, and the exhaust outlet of compressor is provided with
Second pressure sensor.
Preferably, the high-temperature heat-exchanging import is provided with third pressure sensor.
Air-conditioning system provided by the invention has the following technical effects, by the way that dropping equipment is arranged before mid temperature heat exchanger,
So that the refrigerant of different pressures is provided for mid temperature heat exchanger and high-temperature heat-exchanging, efficiency drop caused by avoiding refrigerant from being unevenly distributed
It is low, system control is optimized, energy consumption is saved.
Description of the drawings
Fig. 1 is the system diagram of the present invention in one embodiment；
Fig. 2 is the system diagram in another embodiment of the present invention.
Figure label：1 compressor；21 first dropping equipments；22 second dropping equipments；31 mid temperature heat exchangers；32 high temperature change
Hot device；4 cryogenic heat exchangers；5 throttling sets；51 first throttling devices；52 second throttling devices；6 flow regulators；61 first
Flow regulator；62 second flow regulating devices；10 first pressure sensors；11 second pressure sensors；12 third pressure
Sensor.
Specific implementation mode
Below with reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in detail.It should be noted that not conflicting
In the case of, the feature in following embodiment and embodiment can be combined with each other.
It is the system diagram of the present invention in one embodiment referring to Fig. 1, Fig. 1.Air-conditioning system provided by the invention includes：
Compressor 1, mid temperature heat exchanger 31, high-temperature heat-exchanging 32, cryogenic heat exchanger 4 and throttling set 5, the compressor 1, medium temperature heat exchange
Device 31, high-temperature heat-exchanging 32, cryogenic heat exchanger 4 are connected to form refrigerant circulation circuit with throttling set 5, wherein the medium temperature exchanges heat
Device 31 and high-temperature heat-exchanging 32 are in parallel, and 31 place branch of the mid temperature heat exchanger is the first branch, 32 institute of the high-temperature heat-exchanging
It is the second branch in branch, further includes the first dropping equipment 21, be arranged in the first branch, is located at the mid temperature heat exchanger
Between 31 and 1 exhaust outlet of compressor.
The working cycles flow of above-mentioned air-conditioning system is：Compressor air-discharging respectively enters the first branch and the second branch, into
The high temperature and pressure refrigerant for entering the first branch enters the heat exchange of mid temperature heat exchanger 31 after the decompression of the first dropping equipment 21, into second
The high temperature and pressure refrigerant on road converges to main coolant loop after 32 internal heat of high-temperature heat-exchanging with first branch refrigerant, through throttling
Device 5 enters the heat absorption evaporation of cryogenic heat exchanger 4 after throttling, finally enter compressor from compressor air suction mouth, completes a job
Cycle.
The air-conditioning system in 31 entrance of mid temperature heat exchanger due to being provided with the first dropping equipment 21, to being changed into medium temperature
The pressure of the high temperature and pressure refrigerant of hot device 31 is adjusted, and provides 31 condensing condition of mid temperature heat exchanger required pressure, simultaneously
Preventing compressor air-discharging from largely entering mid temperature heat exchanger 31 causes 32 energy of high-temperature heat-exchanging insufficient, the increase of units consumption.
Above-mentioned first dropping equipment 21 can select capillary, can also select manual dropping valve, high temperature and pressure refrigerant warp
It crosses capillary or decompression downstream pressure is lowered.
To reach better control effect, the first dropping equipment 21 is preferably electric expansion valve.The mid temperature heat exchanger 31
First pressure sensor 10 is additionally provided between entrance and the first dropping equipment 21, first pressure sensor 10 is used for detecting entrance
The refrigerant pressure of mid temperature heat exchanger 31 controls the aperture of the first dropping equipment 21 according to the pressure value measured, to adjust entrance
The pressure of refrigerant in mid temperature heat exchanger 31.
This air-conditioning system uses frequency-changeable compressor, can pass through tune to entering the adjusting of refrigerant pressure of high-temperature heat-exchanging 32
The rotating speed of compressor 1 is saved to realize.It, can be in high-temperature heat-exchanging 32 and compression in order to improve the control effect to high-temperature heat-exchanging
Second dropping equipment 22 is set in the second branch between 1 exhaust outlet of machine, the second decompression is directly passed through according to running situation
Device carries out the adjusting of high-temperature heat-exchanging entrance refrigerant pressure.
Further, the second dropping equipment 22 is preferably electric expansion valve, and 1 exhaust outlet of compressor is provided with second pressure biography
Sensor 11, the exhaust outlet of compressor pressure that second pressure sensor 11 detects are equal to the refrigerant pressure into high-temperature heat-exchanging 32
The aperture of power, the second dropping equipment of pressure value pair 22 which can detect according to second pressure sensor 11 is adjusted
Section.
Further, it is provided with flow regulator 6 before the throttling set 5 in above-mentioned air-conditioning system, due to being changed from medium temperature
The refrigerant pressure that hot device 31 and high-temperature heat-exchanging 32 flow out is different, so first passing through flow-rate adjustment dress before entering throttling set 5
6 carry out flow-rate adjustments are set, the stability of restriction effect and system is helped to improve.Throttling set 5 is preferably electric expansion valve, stream
Quantity regulating device 6 is preferably electric expansion valve, can also be other common flow control valves such as capillary, hand-operated valve.
Wherein, the flow regulator 6 can be arranged on the first leg, be located at mid temperature heat exchanger 31 and throttling set
Between 5, after refrigerant condenses in mid temperature heat exchanger 31, first passes through the progress of flow regulator 6 flow-rate adjustment and throttle again；Institute
Stating flow regulator 6 can also be arranged in the second branch, and between high-temperature heat-exchanging 32 and throttling set 5, refrigerant exists
After being condensed in high-temperature heat-exchanging 32, first passes through the progress of flow regulator 6 flow-rate adjustment and throttle again；The flow-rate adjustment dress
Setting 6 can also be arranged on main coolant loop, be located at before 5 import of throttling set, refrigerant is changed in high-temperature heat-exchanging 32 and medium temperature
Flow regulator 6 is first passed through after being condensed in hot device 31 and carries out flow-rate adjustment, is entered back into throttling set 5 and is throttled.
Referring to Fig. 2, Fig. 2 is the system diagram in another embodiment of the present invention, and in this embodiment, the throttling set is
Two, respectively first throttling device 51 and second throttling device 52, first throttling device 51 are arranged on the first leg；Second
Throttling set 52 is arranged in the second branch.After refrigerant in the first branch condenses in mid temperature heat exchanger 31, through first
Throttling set 51 flows into main coolant loop after throttling, after the refrigerant in the second branch condenses in high-temperature heat-exchanging 32, through second
Throttling set 52 flows into main coolant loop after throttling.Refrigerant after two-way reducing pressure by regulating flow enters cryogenic heat exchanger 4 after converging, low
In warm heat exchanger 4 compressor is returned to after evaporation.By the way that throttling set is respectively set on the roads Liang Gezhi, to two-way refrigerant respectively into
Row reducing pressure by regulating flow, to improve restriction effect, system is more steady.
Further, the flow regulator is two, on the first leg first throttling device 51 and medium temperature heat exchange
It is provided with first flow regulating device 61 between device 31 and first passes through first flow tune after refrigerant condenses in mid temperature heat exchanger 31
Regulating device 61 carries out flow-rate adjustment and throttles using first throttling device 51, to further improve restriction effect, carries
The high stability of system.
Further, second flow adjusting is provided in the second branch between second throttling device 52 and high-temperature heat-exchanging 32
Device 62, after refrigerant condenses in high-temperature heat-exchanging 32, first pass through second flow regulating device 62 carry out flow-rate adjustment using
Second throttling device 52 throttles, and to further improve restriction effect, improves the stability of system.
Referring to Fig. 1 and Fig. 2, to advanced optimize system control, 32 import of the high-temperature heat-exchanging is provided with third pressure
Sensor 12, into the refrigerant pressure of high-temperature heat-exchanging 32, the second dropping equipment 22 is electricity for the third pressure sensor 12 detection
Sub- expansion valve, which controls the aperture of the second dropping equipment 22 according to the pressure value measured, to adjust into high temperature
Refrigerant pressure in heat exchanger 32.
Air-conditioning system provided by the invention has the following technical effects, by the way that dropping equipment is arranged before mid temperature heat exchanger,
So that the refrigerant of different pressures is provided for mid temperature heat exchanger and high-temperature heat-exchanging, efficiency drop caused by avoiding refrigerant from being unevenly distributed
It is low, system control is optimized, energy consumption is saved；Meanwhile in such a way that different pressures branch is throttled respectively, section is improved
Effect is flowed, the stationarity of system operation is improved；In addition, by the way that flow regulator is arranged before throttling set, it is further excellent
The control for having changed refrigerant improves the stationarity of system operation, improves the reliability of system.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.
Claims (8)
1. a kind of air-conditioning system, including：Compressor, mid temperature heat exchanger, high-temperature heat-exchanging, cryogenic heat exchanger and throttling set, institute
Compressor, mid temperature heat exchanger, high-temperature heat-exchanging, cryogenic heat exchanger is stated to be connected to form refrigerant circulation circuit with throttling set, it is described
Mid temperature heat exchanger and high-temperature heat-exchanging are in parallel, and branch where the mid temperature heat exchanger is the first branch, the high-temperature heat-exchanging institute
It is the second branch in branch, which is characterized in that further include the first dropping equipment, be arranged in the first branch, be located at described
Between mid temperature heat exchanger and exhaust outlet of compressor；The throttling set includes first throttling device and second throttling device, described
First throttling device is arranged in the first branch, between mid temperature heat exchanger and the cryogenic heat exchanger；Described second
Throttling set is arranged in the second branch, between the high-temperature heat-exchanging and the cryogenic heat exchanger.
2. air-conditioning system according to claim 1, which is characterized in that further include the second dropping equipment, second decompression
Device is arranged in the second branch, between high-temperature heat-exchanging and exhaust outlet of compressor.
3. air-conditioning system according to claim 1 or 2, which is characterized in that the first throttling device is changed with the medium temperature
It is provided with flow regulator between hot device.
4. air-conditioning system according to claim 3, which is characterized in that the second throttling device and the high-temperature heat-exchanging
Between be provided with flow regulator.
5. air-conditioning system according to claim 1 or 2, which is characterized in that the mid temperature heat exchanger import is provided with first
Pressure sensor, the exhaust outlet of compressor are provided with second pressure sensor.
6. air-conditioning system according to claim 3, which is characterized in that the mid temperature heat exchanger import is provided with first pressure
Sensor, the exhaust outlet of compressor are provided with second pressure sensor.
7. air-conditioning system according to claim 5, which is characterized in that the high-temperature heat-exchanging import is provided with third pressure
Sensor.
8. air-conditioning system according to claim 6, which is characterized in that the high-temperature heat-exchanging import is provided with third pressure
Sensor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344521.4A CN104344599B (en) | 2013-08-08 | 2013-08-08 | Air conditioning system |
| PCT/CN2014/076880 WO2015018214A1 (en) | 2013-08-08 | 2014-05-06 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344521.4A CN104344599B (en) | 2013-08-08 | 2013-08-08 | Air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104344599A CN104344599A (en) | 2015-02-11 |
| CN104344599B true CN104344599B (en) | 2018-10-26 |
Family
ID=52460612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310344521.4A Active CN104344599B (en) | 2013-08-08 | 2013-08-08 | Air conditioning system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104344599B (en) |
| WO (1) | WO2015018214A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917067B (en) * | 2018-09-17 | 2023-07-18 | 宁波奥克斯电气股份有限公司 | A multi-connected air conditioning system |
| CN114992812A (en) * | 2022-06-17 | 2022-09-02 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526280A (en) * | 2009-04-20 | 2009-09-09 | 广东志高空调有限公司 | Hot water air-conditioner |
| CN102829571A (en) * | 2011-06-15 | 2012-12-19 | 李思模 | Air conditioner with double condensers |
| CN102844630A (en) * | 2010-04-05 | 2012-12-26 | 三菱电机株式会社 | Air conditioning and hot-water supply composite system |
| CN103026150A (en) * | 2010-07-29 | 2013-04-03 | 株式会社日立制作所 | Air conditioning and hot-water supply system |
| CN203464540U (en) * | 2013-08-08 | 2014-03-05 | 珠海格力电器股份有限公司 | Air conditioning system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2139021A1 (en) * | 1994-12-23 | 1996-06-24 | Reinhold Kittler | Transferring heat from two different heat exchangers connected in series without the use of control valves |
| CN200958879Y (en) * | 2006-08-03 | 2007-10-10 | 邱致琏 | Frozen air-conditioner set improvement of economical frequency-variable hot pump |
| CN1936459A (en) * | 2006-10-14 | 2007-03-28 | 蔡志鸿 | Double electronic expansion-valve air-conditioning water-heating dual-purpose machine group |
-
2013
- 2013-08-08 CN CN201310344521.4A patent/CN104344599B/en active Active
-
2014
- 2014-05-06 WO PCT/CN2014/076880 patent/WO2015018214A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526280A (en) * | 2009-04-20 | 2009-09-09 | 广东志高空调有限公司 | Hot water air-conditioner |
| CN102844630A (en) * | 2010-04-05 | 2012-12-26 | 三菱电机株式会社 | Air conditioning and hot-water supply composite system |
| CN103026150A (en) * | 2010-07-29 | 2013-04-03 | 株式会社日立制作所 | Air conditioning and hot-water supply system |
| CN102829571A (en) * | 2011-06-15 | 2012-12-19 | 李思模 | Air conditioner with double condensers |
| CN203464540U (en) * | 2013-08-08 | 2014-03-05 | 珠海格力电器股份有限公司 | Air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104344599A (en) | 2015-02-11 |
| WO2015018214A1 (en) | 2015-02-12 |
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