CN107238238B - Throttling device and air conditioning system - Google Patents
Throttling device and air conditioning system Download PDFInfo
- Publication number
- CN107238238B CN107238238B CN201710424911.0A CN201710424911A CN107238238B CN 107238238 B CN107238238 B CN 107238238B CN 201710424911 A CN201710424911 A CN 201710424911A CN 107238238 B CN107238238 B CN 107238238B
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- China
- Prior art keywords
- air inlet
- shell
- throttle device
- pressure air
- pressure
- 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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- 238000004378 air conditioning Methods 0.000 title claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 19
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/18—Optimization, e.g. high integration of refrigeration components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a throttling device and an air conditioning system. The throttling device comprises a shell, a high-pressure air inlet, a low-pressure air inlet and a counter force element, wherein a pore plate and a valve core matched with the pore plate are arranged in a refrigerant channel of the shell; the pressure difference force between the high-pressure air inlet and the low-pressure air inlet is opposite to the counter force provided by the counter force element, and the pressure difference force drives the orifice plate and the valve core to move relatively so as to adjust the opening of the throttling orifice generated by the cooperation of the orifice plate and the valve core. The invention can utilize the corresponding relation between the pressure difference between the condenser and the evaporator and the optimal throttle aperture when the unit operates under different loads, and can drive the orifice plate and the valve core to move relatively by the pressure difference between the condenser and the evaporator so as to adjust the flow area of the throttle orifice on the orifice plate in real time, thereby realizing that the orifice plate can adjust the throttle aperture in real time when the load of the unit changes, having self-adaptive function and finally improving the performance of the load of the unit when the load of the unit is not at a design point.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a throttling device and an air conditioning system.
Background
In the centrifugal water chilling unit system device, the orifice plate is one of key devices, and is usually in a structure form that one or more orifices with fixed apertures are formed on a flange plate, and once the design and processing of the orifice plate are finished, the aperture of the orifice plate is fixed, and the throttling capacity cannot be adjusted.
In the actual running of the centrifugal unit, the unit load does not always run at the design point, but dynamically changes according to the actual situation, and when the unit running load deviates from the design point, the throttling capacity of the throttling orifice plate and the unit load cannot be matched due to the fact that the aperture of the throttling orifice plate is not adjustable, and finally the unit performance is reduced.
Disclosure of Invention
The embodiment of the invention provides a throttling device and an air conditioning system, which are used for solving the problem that the performance of a unit load at a non-design point is affected because the throttling aperture cannot be adjusted in real time along with the load change of the unit in the prior art and does not have a self-adaptive function.
In order to achieve the above purpose, the embodiment of the invention provides a throttling device, which comprises a shell, a high-pressure air inlet, a low-pressure air inlet and a counterforce element, wherein a pore plate and a valve core matched with the pore plate are arranged in a refrigerant channel of the shell; the pressure difference force between the high-pressure air inlet and the low-pressure air inlet is opposite to the counter force provided by the counter force element, and the pressure difference force drives the pore plate and the valve core to move relatively so as to adjust the opening of the throttling port generated by the cooperation of the pore plate and the valve core.
Preferably, the valve core is fixedly connected with the housing, and the orifice plate is movably arranged on the housing.
Preferably, the casing includes an outer casing and an inner casing sleeved inside the outer casing, an annular space is formed between the outer casing and the inner casing, a part of the orifice plate is located in the annular space so as to divide the annular space into a high-pressure chamber and a low-pressure chamber, the high-pressure air inlet is communicated with the high-pressure chamber, and the low-pressure air inlet is communicated with the low-pressure chamber.
Preferably, the reaction element is disposed within the low pressure chamber.
Preferably, the orifice plate includes the inner ring and overlaps the outside outer loop of inner ring, the inner ring with connect through the connecting rib between the outer loop, be provided with the spout on the inner shell, the connecting rib sets up in the spout.
Preferably, the throttle device further comprises a sealing element for sealing the chute.
Preferably, one sealing element is respectively arranged on two sides of the sliding groove, one sealing element is fixedly connected with the inner ring, and the other sealing element is fixedly connected with the outer ring.
Preferably, the valve core comprises a valve rod and a base connected with the inner shell, one end of the valve rod is connected with the base, and the other end of the valve rod is arranged corresponding to the opening of the inner ring.
Preferably, the outer surface of the other end of the valve rod is a conical surface, a stepped surface or a paraboloid.
Preferably, four sliding grooves are formed in the inner shell and are uniformly distributed along the circumferential direction of the inner shell.
Preferably, the sliding groove is rectangular.
Preferably, the reaction element is a spring.
Preferably, the orifice plate is fixedly connected with the housing, and the valve core is movably arranged on the housing.
The invention also provides an air conditioning system comprising the throttling device.
Preferably, the air conditioning system comprises an evaporator and a condenser, wherein the low-pressure air inlet of the throttling device is connected with the evaporator, and the high-pressure air inlet of the throttling device is connected with the condenser.
The invention can utilize the corresponding relation between the pressure difference between the condenser and the evaporator and the optimal throttle aperture when the unit operates under different loads, and can drive the orifice plate and the valve core to move relatively by the pressure difference between the condenser and the evaporator so as to adjust the flow area of the throttle orifice on the orifice plate in real time, thereby realizing that the orifice plate can adjust the throttle aperture in real time when the load of the unit changes, having self-adaptive function and finally improving the performance of the load of the unit when the load of the unit is not at a design point.
Drawings
Fig. 1 is a schematic view of a three-dimensional internal structure of a throttle device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a throttle device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a throttle device in accordance with an embodiment of the present invention taken in the direction A-A of FIG. 2;
fig. 4 is a schematic diagram of the structure of an orifice plate according to an embodiment of the present invention.
Reference numerals illustrate: 1. a high pressure air inlet; 2. a low pressure air inlet; 3. a reaction force element; 4. an orifice plate; 5. a valve core; 6. a housing; 7. an inner case; 8. a high pressure chamber; 9. a low pressure chamber; 10. an inner ring; 11. an outer ring; 12. a connecting rib; 13. a chute; 14. a sealing member; 15. a valve stem; 16. and (5) a base.
Detailed Description
The invention will now be described in further detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
The embodiment of the invention provides a throttling device, which comprises a shell, a high-pressure air inlet 1, a low-pressure air inlet 2 and a counter-force element 3, wherein a pore plate 4 and a counter-force element are arranged in a refrigerant channel of the shell; the pressure difference force between the high-pressure air inlet 1 and the low-pressure air inlet 2 is opposite to the counter force provided by the counter force element 3, and the pressure difference force drives the orifice plate 4 and the valve core 5 to move relatively so as to adjust the opening of the throttling mouth generated by the cooperation of the orifice plate 4 and the valve core 5.
As shown in fig. 1 to 4, a pressure difference force is generated between the high pressure air inlet 1 and the low pressure air inlet 2 to act on the orifice plate 4 or the valve body 5, and the counter force element applies a counter force to the orifice plate 4 or the valve body 5. Therefore, the orifice plate 4 or the valve element 5 receives the differential pressure force and the counter force at the same time, and when the differential pressure force and the counter force are unbalanced, the orifice plate 4 and the valve element 5 perform relative movement, so that the opening degree of the orifice is adjusted. As this relative movement proceeds, the reaction force that the reaction force element 3 can provide changes, and the differential pressure force and the reaction force reach an equilibrium state, and the relative movement of the orifice plate 4 and the valve body 5 is stopped.
Therefore, when the unit operates under different loads, the invention can utilize the corresponding relation between the pressure difference between the condenser and the evaporator and the optimal throttling aperture (namely the opening degree of the throttling orifice), so that the pressure difference between the condenser and the evaporator drives the orifice plate 4 and the valve core 5 to generate relative motion, and the flow area of the throttling orifice on the orifice plate 4 is adjusted in real time, thereby realizing that the orifice plate 4 can adjust the throttling aperture in real time when the load of the unit changes, having a self-adaptive function and finally improving the performance of the unit load at a non-design point.
In the embodiment shown in fig. 1 to 4, the valve element 5 is preferably fixedly connected to a housing, in which the orifice plate 4 is movably arranged. In another embodiment, not shown, the orifice plate 4 is preferably fixedly connected to the housing, and the valve cartridge 5 is movably arranged in the housing. The two embodiments differ in that the movable parts are different, but the principle is the same.
The present invention will be described in detail below with reference to the embodiment shown in fig. 1 to 4.
Preferably, the housing includes an outer shell 6 and an inner shell 7 sleeved inside the outer shell 6, an annular space is formed between the outer shell 6 and the inner shell 7, a part of the orifice plate 4 is located in the annular space so as to divide the annular space into a high-pressure chamber 8 and a low-pressure chamber 9, the high-pressure air inlet 1 is communicated with the high-pressure chamber 8, and the low-pressure air inlet 2 is communicated with the low-pressure chamber 9. In this way, a space is formed between the outer shell 6 and the inner shell 7, and the inside of the space constitutes the annular space. The annular space itself is a closed structure, so that the above-mentioned relative movement can be achieved by means of the pressure difference between the high-pressure chamber 8 and the low-pressure chamber 9.
Preferably, the orifice plate 4 comprises an inner ring 10 and an outer ring 11 sleeved outside the inner ring 10, the inner ring 10 is connected with the outer ring 11 through connecting ribs 12, a sliding groove 13 is formed in the inner shell 7, and the connecting ribs 12 are arranged in the sliding groove 13.
More preferably, the counterforce element 3 is arranged in the low-pressure chamber 9. The counter force element 3 is, for example, a spring. One end of the reaction force element 3 is in contact with the orifice plate 4, and thus the above reaction force can be provided to the orifice plate 4. More specifically, one end of the reaction element 3 is connected or in abutment with the outer ring 11.
In order to achieve a seal of the annular space, the throttle device preferably further comprises a sealing element 14 for sealing the slide groove 13. For example, the sealing element 14 may be a sealing strip, which may be a rectangular structure.
In the embodiment shown in fig. 1 to 4, preferably, one sealing element 14 is provided on each side of the slide groove 13, one sealing element 14 being fixedly connected to the inner ring 10 and the other sealing element 14 being fixedly connected to the outer ring 11. When a relative movement occurs, the sealing element 14 moves therewith.
Preferably, the valve core 5 includes a valve stem 15 and a base 16 connected to the inner housing 7, one end of the valve stem 15 is connected to the base 16, and the other end of the valve stem 15 is disposed corresponding to the opening of the inner ring 10. The base 16 is provided with openings for passing the refrigerant therethrough, and more preferably, the base 16 includes a plurality of ribs radially disposed, and the openings are formed between adjacent ribs.
In one embodiment, the outer surface of the other end of the valve stem 15 is preferably conical, or stepped, or parabolic.
Preferably, four sliding grooves 13 are provided on the inner casing 7, and the four sliding grooves 13 are uniformly distributed along the circumferential direction of the inner casing 7. Preferably, the chute 13 is rectangular. Correspondingly, the number of the connecting ribs 12 is four, and the connecting ribs are arranged in a cross state.
The invention also provides an air conditioning system comprising the throttling device. Preferably, the air conditioning system comprises an evaporator and a condenser, the low pressure air inlet 2 of the throttling device being connected to the evaporator and the high pressure air inlet 1 of the throttling device being connected to the condenser.
Referring to fig. 2, the throttle device is installed on the main liquid path of the unit, and the flow direction of the refrigerant is shown by an arrow in fig. 2, wherein the low pressure air inlet 2 is connected with the top of the evaporator of the unit, and the high pressure air inlet 1 is connected with the top of the condenser.
Before the unit is started, a pressure difference deltap (i.e. the pressure difference between the evaporator and the condenser) is present between the high pressure chamber 8 and the low pressure chamber 9, the pressure difference deltap being substantially 0. The orifice plate 4 only receives the thrust of the counterforce element 3, and the chute 13 has a limiting function so as to ensure that the throttle orifice has a certain pre-opening degree and ensure that the unit is started normally.
When the unit normally operates, if the unit load is reduced, the differential pressure delta P is increased, the orifice plate 4 moves rightwards, the flow area of the throttle orifice is reduced, the unit load is matched with the throttle capacity of the throttle orifice plate, and the performance of the whole machine is improved. When the unit load is reduced, the differential pressure delta P is reduced, the orifice plate 4 moves leftwards, the flow area of the throttle orifice is increased, the unit load is matched with the throttle capacity of the throttle orifice plate, and the performance of the whole machine is improved.
Therefore, when the load of the unit is changed, the throttle orifice plate can be adaptively adjusted, so that the performance of the unit is improved.
Of course, the above is a preferred embodiment of the present invention. It should be noted that it will be apparent to those skilled in the art that several modifications and adaptations can be made without departing from the general principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (13)
1. The throttling device is characterized by comprising a shell, a high-pressure air inlet (1), a low-pressure air inlet (2) and a counter force element (3), wherein a pore plate (4) and a valve core (5) matched with the pore plate (4) are arranged in a refrigerant channel of the shell;
the pressure difference force between the high-pressure air inlet (1) and the low-pressure air inlet (2) is opposite to the counter force provided by the counter force element (3), and the pressure difference force drives the pore plate (4) and the valve core (5) to move relatively so as to adjust the opening of a throttling port generated by the cooperation of the pore plate (4) and the valve core (5);
the valve core (5) is fixedly connected with the shell, and the pore plate (4) is movably arranged on the shell;
the shell comprises an outer shell (6) and an inner shell (7) sleeved in the outer shell (6), an annular space is formed between the outer shell (6) and the inner shell (7), a part of the pore plate (4) is located in the annular space to divide the annular space into a high-pressure cavity (8) and a low-pressure cavity (9), the high-pressure air inlet (1) is communicated with the high-pressure cavity (8), and the low-pressure air inlet (2) is communicated with the low-pressure cavity (9).
2. A throttle device according to claim 1, characterized in that the counter-force element (3) is arranged in the low-pressure chamber (9).
3. Throttle device according to claim 1, characterized in that the orifice plate (4) comprises an inner ring (10) and an outer ring (11) sleeved outside the inner ring (10), the inner ring (10) and the outer ring (11) are connected by connecting ribs (12), a chute (13) is arranged on the inner shell (7), and the connecting ribs (12) are arranged in the chute (13).
4. A throttle device according to claim 3, characterized in that the throttle device further comprises a sealing element (14) for sealing the chute (13).
5. Throttle device according to claim 4, characterized in that the slide groove (13) is provided with one sealing element (14) on each side, one sealing element (14) being fixedly connected to the inner ring (10) and the other sealing element (14) being fixedly connected to the outer ring (11).
6. A throttle device according to claim 3, characterized in that the valve core (5) comprises a valve stem (15) and a seat (16) connected to the inner housing (7), one end of the valve stem (15) being connected to the seat (16), the other end of the valve stem (15) being arranged in correspondence with the opening of the inner ring (10).
7. A throttle device according to claim 6, characterized in that the outer surface of the other end of the valve stem (15) is conical, stepped, or parabolic.
8. A throttle device according to claim 3, characterized in that four of the runners (13) are provided on the inner housing (7), the four runners (13) being evenly distributed along the circumference of the inner housing (7).
9. A throttle device according to claim 3, characterized in that the chute (13) is rectangular.
10. A throttle device according to claim 1, characterized in that the counter-force element (3) is a spring.
11. A throttle device according to claim 1, characterized in that the orifice plate (4) is fixedly connected to the housing, the valve element (5) being movably arranged in the housing.
12. An air conditioning system comprising a throttle device according to any one of claims 1 to 11.
13. An air conditioning system according to claim 12, characterized in that the air conditioning system comprises an evaporator and a condenser, the low pressure air inlet (2) of the throttling means being connected to the evaporator, the high pressure air inlet (1) of the throttling means being connected to the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424911.0A CN107238238B (en) | 2017-06-05 | 2017-06-05 | Throttling device and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424911.0A CN107238238B (en) | 2017-06-05 | 2017-06-05 | Throttling device and air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107238238A CN107238238A (en) | 2017-10-10 |
| CN107238238B true CN107238238B (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710424911.0A Active CN107238238B (en) | 2017-06-05 | 2017-06-05 | Throttling device and air conditioning system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107238238B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896478A (en) * | 2018-07-26 | 2018-11-27 | 西南交通大学 | Multi-functional finger friction test equipment |
| CN109579365B (en) * | 2019-01-16 | 2023-06-20 | 珠海格力电器股份有限公司 | Compressor air supplementing device and method with adjustable air supplementing amount and air conditioner |
| CN109539642A (en) * | 2019-01-18 | 2019-03-29 | 奥克斯空调股份有限公司 | A kind of adaptive throttling device and air conditioner |
| CN113124589A (en) * | 2021-05-28 | 2021-07-16 | 爱法科技(无锡)有限公司 | Electronic multi-stage composite matrix type throttle orifice plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170831A (en) * | 1995-12-21 | 1997-06-30 | Matsushita Electric Ind Co Ltd | Refrigerating device |
| JPH11148576A (en) * | 1997-11-17 | 1999-06-02 | Denso Corp | Pressure control valve |
| JPH11170850A (en) * | 1997-12-08 | 1999-06-29 | Calsonic Corp | Cooling device for automobile |
| CN102384610A (en) * | 2011-06-21 | 2012-03-21 | 珠海格力电器股份有限公司 | Pore plate throttling device |
| CN202613856U (en) * | 2012-04-16 | 2012-12-19 | 重庆美的通用制冷设备有限公司 | Adjustable throttling device for water chilling unit |
| CN203478745U (en) * | 2013-06-20 | 2014-03-12 | 重庆通用工业(集团)有限责任公司 | Manual adjustment throttle device |
| CN207006647U (en) * | 2017-06-05 | 2018-02-13 | 珠海格力电器股份有限公司 | Throttling arrangement and air-conditioning system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3757784B2 (en) * | 2000-04-06 | 2006-03-22 | 株式会社デンソー | Pressure reducing device and refrigeration cycle device using the same |
| KR100339072B1 (en) * | 2000-05-17 | 2002-05-31 | 이계안 | Expansion valve of air conditioner system for automobile |
-
2017
- 2017-06-05 CN CN201710424911.0A patent/CN107238238B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170831A (en) * | 1995-12-21 | 1997-06-30 | Matsushita Electric Ind Co Ltd | Refrigerating device |
| JPH11148576A (en) * | 1997-11-17 | 1999-06-02 | Denso Corp | Pressure control valve |
| JPH11170850A (en) * | 1997-12-08 | 1999-06-29 | Calsonic Corp | Cooling device for automobile |
| CN102384610A (en) * | 2011-06-21 | 2012-03-21 | 珠海格力电器股份有限公司 | Pore plate throttling device |
| CN202613856U (en) * | 2012-04-16 | 2012-12-19 | 重庆美的通用制冷设备有限公司 | Adjustable throttling device for water chilling unit |
| CN203478745U (en) * | 2013-06-20 | 2014-03-12 | 重庆通用工业(集团)有限责任公司 | Manual adjustment throttle device |
| CN207006647U (en) * | 2017-06-05 | 2018-02-13 | 珠海格力电器股份有限公司 | Throttling arrangement and air-conditioning system |
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| Publication number | Publication date |
|---|---|
| CN107238238A (en) | 2017-10-10 |
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Effective date of registration: 20231031 Address after: 519070, 1st Floor, Building 7, No. 789 Jinji Road, Qianshan, Zhuhai, Guangdong Province Patentee after: Zhuhai Gree Green Control Technology Co.,Ltd. Address before: 519070, Jinji Hill Road, front hill, Zhuhai, Guangdong Patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |
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