CN104422201A - Gas-liquid separation type evaporator - Google Patents
Gas-liquid separation type evaporator Download PDFInfo
- Publication number
- CN104422201A CN104422201A CN201310375895.2A CN201310375895A CN104422201A CN 104422201 A CN104422201 A CN 104422201A CN 201310375895 A CN201310375895 A CN 201310375895A CN 104422201 A CN104422201 A CN 104422201A
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- Prior art keywords
- gas
- communicated
- inlet
- liquid
- evaporimeter
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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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a gas-liquid separation type evaporator. The gas-liquid separation type evaporator comprises an inlet collecting pipe, an outlet collecting pipe above the inlet collecting pipe and a gas-liquid separation tank, a plurality of flat pipes are communicated between the inlet collecting pipe and outlet collecting pipe, the gas-liquid separation tank is communicated with an evaporator inlet for feeding two-phase refrigerant, a gas guide hole is formed in the top of the gas-liquid separation tank, the bottom of the gas-liquid separation tank is communicated with a liquid guide pipe, the liquid guide pipe is communicated with the inlet collecting pipe, the gas guide hole is communicated with the outlet collecting pipe through a gas guide pipe, and the gas guide pipe is arranged at the windward side or leeward side of the evaporator. Through arranging the gas guide pipe at the windward side or leeward side of the evaporator, the gaseous refrigerant in the gas guide pipe and the air which passes through the windward side or leeward side of the evaporator exchange heat to absorb heat to form super-heated steam, the super-heated steam enters a compressor, the liquid carry of the air suction of the compressor is effectively avoided, and meanwhile, the refrigerant entering the evaporator is fully liquid, and therefore, the refrigerant can be uniformly distributed to each flat pipe.
Description
Technical field
The present invention relates to air-condition heat exchanger field, particularly relate to evaporimeter.
Background technology
Existing micro-channel evaporator, the mode of conventional header interpolation distributing pipe solves cold-producing medium assignment problem, scheme as shown in patent US_20100089559_A1, distributing pipe has aperture, cold-producing medium is flowed out through aperture by house steward again, but because header internal volume wants large many relative to distributing pipe, therefore cold-producing medium easily produces gas-liquid separation phenomenon after the outflow of distributing pipe aperture enters header, causes cold-producing medium to be difficult to uniform distribution to each flat pipe hole.
Each flat pipe hole is distributed in order to what make uniform refrigerant, the patent No. be 200710063071.6 a patent document propose a kind of gas-liquid separated evaporimeter, this technology can realize the outlet that the gaseous parts after being separated by two phase cold-producing mediums of evaporator inlet is bypassed to evaporimeter, enter compressor again, make the cold-producing medium major part entering evaporimeter for liquid, make separatory even, improve heat exchange property.But because cryogenic gaseous cold-producing medium is directly bypassed to evaporator outlet, gas-liquid separator cannot thoroughly separating gaseous and liquid refrigerant, gaseous refrigerant flow velocity is higher, have some liquid refrigerant will along with gaseous refrigerant together by bypass to evaporator outlet, enter compressor subsequently, cause compressor air suction band liquid, easily cause the liquid hit phenomenon of compressor, make compressor damage.And when this evaporimeter do heat pump working condition run time, the former outlet of evaporimeter becomes the entrance of high-temperature gas, has part high-temperature gas will along bypass branch without heat exchanger condensation, and gaseous state directly enters expansion valve, reduces the performance of expansion valve, systematic function is declined.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of gas-liquid separated evaporimeter, solves header inner refrigerant assignment problem in prior art, improves heat exchanger distributing uniformity, solves compressor air suction band liquid problem simultaneously.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of gas-liquid separated evaporimeter, comprise the outlet collection pipe above inlet collecting and inlet collecting, some flat tubes are communicated with between described inlet collecting and outlet collection pipe, also comprise a knockout drum, described knockout drum is communicated with the evaporator inlet entered for two phase cold-producing mediums, described gas-liquid separation tank top is provided with air guide port, described gas-liquid separation pot bottom is communicated with catheter, described catheter is communicated with inlet collecting, described air guide port is communicated with outlet collection pipe by wireway, described wireway is arranged in evaporimeter windward side or leeward side.
Preferably, described wireway is multistage bending structure.
Preferably, described wireway is provided with a check valve.
Preferably, the liquid refrigerant inlet of described evaporimeter and gaseous refrigerant export and adopt diagonal angle to arrange.
Preferably, described inlet collecting is provided with baffle for separating away from liquid refrigerant inlet side and goes out an air guide room, and described wireway end inserts this air guide room, and the flat tube of gaseous refrigerant through being communicated with air guide room that wireway is derived flows into outlet collection pipe.
Preferably, the microchannel pore of the flat tube that the microchannel pore of the described flat tube be communicated with air guide room flows through than liquid refrigerant is large.
Preferably, described evaporator inlet is located at the side of knockout drum.
Preferably, described catheter inserts the distributing pipe that inlet collecting forms cold-producing medium, and described distributing pipe is provided with dispensing orifice, and liquid refrigerant enters inlet collecting by the dispensing orifice outflow on distributing pipe and flows to flat tube again.
Preferably, described wireway is provided with a control valve, a pressure sensor and temperature sensor are set before condensator outlet or throttling arrangement simultaneously, after evaporator inlet or throttling arrangement, be also provided with pressure sensor, computer chip gathers the information of above-mentioned pressure and temperature sensor and calculates mass dryness fraction thus the aperture of control and regulation valve.
The present invention arranges a knockout drum at evaporator inlet place, gas-liquid separation is produced under gravity after two phase cold-producing mediums enter knockout drum, liquid refrigerant enters evaporator inlet header from bottom due to gravity, gaseous refrigerant is derived by upper airway, two parts gaseous refrigerant flows out evaporimeter again after the mixing of outlet collection pipe, enter compressor, because wireway is arranged in evaporimeter windward side or leeward side, gaseous refrigerant in wireway and the air of blowing over evaporimeter windward side or leeward side carry out heat exchange absorption heat formation superheated vapor and enter compressor again, effectively can avoid compressor air suction band liquid phenomenon.Enter the cold-producing medium of evaporimeter for complete liquid, therefore cold-producing medium can distribute to each root flat tube more uniformly simultaneously.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the embodiment of the present invention 1 structural representation;
Fig. 2 is the embodiment of the present invention 2 structural representation;
Fig. 3 is the embodiment of the present invention 3 structural representation;
Fig. 4 is the embodiment of the present invention 4 structural representation;
Fig. 5 is the side view of evaporimeter in Fig. 4;
Fig. 6 is A place enlarged drawing in Fig. 4;
Fig. 7 is the embodiment of the present invention 5 structural representation.
Detailed description of the invention
Below in conjunction with Fig. 1 embodiments of the invention 1 are made and illustrating.In the present embodiment, gas-liquid separated evaporimeter 1 comprises outlet collection pipe 10 above inlet collecting 11 and inlet collecting and in parallel, some flat tubes 12 are communicated with between described inlet collecting 11 and outlet collection pipe 10, this evaporimeter 1 also comprises a knockout drum 2, described knockout drum 2 is communicated with the evaporator inlet 20 entered for two phase cold-producing mediums, the air guide port at described knockout drum 2 top is communicated with wireway 21, catheter 23 is communicated with bottom described knockout drum 2, described wireway 21 is communicated with outlet collection pipe 10, described catheter 23 is communicated with the liquid refrigerant inlet of inlet collecting 11, described outlet collection pipe 10 is provided with gaseous refrigerant outlet, gaseous refrigerant outlet is connected with compressor by gas eduction tube 13.
Wherein, knockout drum 2 is located at the side of evaporator inlet header 11 and outlet collection pipe 10 entrance point, and evaporator inlet 20 inserts from knockout drum 2 top cover, and wireway 21 is also derived from knockout drum 2 top cover.The structure of wireway 21 folding in multistage U-bend, can certainly be other forms of multistage bending structure, such as S shape, fully carry out heat exchange to make the gaseous refrigerant in wireway 21 and air.
In order to prevent liquid refrigerant from also deriving from wireway 21, can increase pressure regulator valve, make liquid refrigerant import the large passage of flow area by the adjustment of pressure regulator valve, gaseous refrigerant imports the little passage of flow area.
Wireway 21 is arranged on evaporimeter 1 windward side or leeward side, is convenient to wireway 21 and carries out heat exchange with air, and the gaseous refrigerant in wireway 21 and air carry out heat exchange absorption heat formation superheated vapor and enter outlet collection pipe 10 again.Described wireway 21 is provided with a check valve 22.
In the scheme of the present embodiment, enter side at evaporimeter 1 and one knockout drum 2 is set, gas-liquid separation is produced after two phase cold-producing mediums enter knockout drum 2, liquid refrigerant enters evaporimeter 1 inlet collecting 11 from bottom due to gravity, gaseous refrigerant is derived by upper airway 21, and wireway 21 is arranged on evaporimeter 1 windward side or leeward side, gaseous refrigerant in wireway 21 and air carry out heat exchange absorb a part of heat formed superheated vapor enter outlet collection pipe 10 again, superheated vapor with evaporation 1 device inside enters compressor by gas eduction tube 13 together.Owing to entering the cold-producing medium of evaporimeter 1 for complete liquid, therefore cold-producing medium can distribute to each root flat tube 12 more uniformly, and gaseous refrigerant just enters compressor after a part of heat of absorption, effectively can avoid compressor air suction band liquid phenomenon, and compressor air suction temperature phenomenon on the low side.Simultaneously wireway 21 installs a check valve 22, during to prevent heat pump working condition, evaporimeter 1 uses as condenser, and high-temperature gas enters expansion valve by wireway 21.
Below in conjunction with Fig. 2 embodiments of the invention 2 are made and illustrating.In the present embodiment, the liquid refrigerant inlet of evaporimeter 1 and gaseous refrigerant export and adopt diagonal angle to arrange.Specifically both can adopt the structure shown in Fig. 2, namely catheter 23 inserts inlet collecting 11 end, and gas eduction tube 13 inserts outlet collection pipe 10 front end.Certainly, also can like this, namely gas eduction tube 13 inserts from outlet collection pipe 10 end, and catheter 23 inserts inlet collecting 11 front end.
In the present embodiment, the import and export of evaporimeter adopt diagonal angle turnover scheme, are more conducive to cold-producing medium and distribute.
Below in conjunction with Fig. 3 embodiments of the invention 3 are made and illustrating.In the present embodiment, inlet collecting 11 is provided with dividing plate 14 away from entrance side and is separated out an air guide room, and described wireway 21 end inserts this air guide room, and the flat tube of gaseous refrigerant through being communicated with air guide room that wireway 21 is derived flows into outlet collection pipe 10.Such gaseous refrigerant imports the little passage of flow area, and namely a small amount of flat tube passage, can prevent liquid refrigerant from deriving from wireway.The microchannel pore of the flat tube 12 that the microchannel pore of the described flat tube 12 be communicated with air guide room flows through than liquid refrigerant is large.
Derive from outlet collection pipe 10 to be beneficial to gaseous refrigerant, gas eduction tube 13 inserts outlet collection pipe 10 and the close flat tube be communicated with air guide room.
Below in conjunction with Fig. 4 to Fig. 6 embodiments of the invention 4 are made and illustrating.In the present embodiment, described evaporator inlet 20 is located at the side of knockout drum 2.Described catheter 23 inserts the distributing pipe that inlet collecting 11 forms cold-producing medium, and described distributing pipe is provided with dispensing orifice 230, and liquid refrigerant enters header by the dispensing orifice outflow on distributing pipe and flows to flat tube 12 again.In addition, wireway 21 is also drawn from the top-side of knockout drum 2, and wireway 21 end is directly communicated with gas eduction tube 13.
In the present embodiment, two phase cold-producing mediums enter from the side of knockout drum, avoid and directly impact liquid refrigerant, and liquid refrigerant is flowed out by the dispensing orifice inserted on the distributing pipe in header, enter header, flow to flat tube again, make cold-producing medium can distribute to each root flat tube more uniformly like this.
Below in conjunction with Fig. 7 embodiments of the invention 5 are made and illustrating.In the present embodiment, described wireway 21 is provided with a control valve 24, a pressure sensor and temperature sensor are set before condensator outlet or throttling arrangement simultaneously, after evaporator inlet or throttling arrangement, be also provided with pressure sensor, computer chip gathers the information of above-mentioned pressure and temperature sensor and calculates mass dryness fraction thus the aperture of control and regulation valve.
When air-conditioner is convertible frequency air-conditioner, flow can change along with environment temperature, during changes in flow rate, evaporator inlet mass dryness fraction can along with change, original gas piping pressure drag and liquid stream pressure drag will no longer balance, there will be gaseous refrigerant and flow to the situation of evaporator outlet along with liquid refrigerant flows into header or liquid refrigerant along with gaseous refrigerant, therefore on gaseous state pipeline, a control valve is increased, need to arrange a pressure sensor and temperature sensor at condensator outlet simultaneously, and pressure sensor is set at the entrance of evaporimeter, the signal at this three place is aggregated into computer chip, calculate mass dryness fraction, again by the aperture of mass dryness fraction value control and regulation valve, mass dryness fraction diminishes, the corresponding reduction of aperture of valve, if mass dryness fraction becomes large, then the aperture of valve increases.
Claims (9)
1. a gas-liquid separated evaporimeter (1), comprise the outlet collection pipe (10) above inlet collecting (11) and inlet collecting, some flat tubes (12) are communicated with between described inlet collecting (11) and outlet collection pipe (10), also comprise a knockout drum (2), described knockout drum (2) is communicated with the evaporator inlet (20) entered for two phase cold-producing mediums, described knockout drum (2) top is provided with air guide port, described knockout drum (2) bottom is communicated with catheter (23), described catheter (23) is communicated with inlet collecting (11), it is characterized in that: described air guide port is communicated with outlet collection pipe (10) by wireway (21), described wireway (21) is arranged in evaporimeter (1) windward side or leeward side.
2. gas-liquid separated evaporimeter according to claim 1, is characterized in that: described wireway is multistage bending structure.
3. gas-liquid separated evaporimeter according to claim 2, is characterized in that: described wireway (21) is provided with a check valve (22).
4. the gas-liquid separated evaporimeter according to claims 1 to 3 any one, is characterized in that: the liquid refrigerant inlet of described evaporimeter (1) and gaseous refrigerant export and adopt diagonal angle to arrange.
5. the gas-liquid separated evaporimeter according to claims 1 to 3 any one, it is characterized in that: described inlet collecting (11) is provided with dividing plate (14) away from liquid refrigerant inlet side and is separated out an air guide room, described wireway (21) end inserts this air guide room, and the flat tube (12) of gaseous refrigerant through being communicated with air guide room that wireway (21) is derived flows into outlet collection pipe (10).
6. gas-liquid separated evaporimeter according to claim 5, is characterized in that: the microchannel pore of the flat tube that the microchannel pore of the described flat tube (12) be communicated with air guide room flows through than liquid refrigerant is large.
7. the gas-liquid separated evaporimeter according to claims 1 to 3 any one, is characterized in that: described evaporator inlet (20) is located at the side of knockout drum (2).
8. gas-liquid separated evaporimeter according to claim 7, it is characterized in that: described catheter (23) inserts the distributing pipe that inlet collecting (11) forms cold-producing medium, described distributing pipe is provided with dispensing orifice (230), and liquid refrigerant enters inlet collecting (11) by the dispensing orifice outflow on distributing pipe and flows to flat tube (12) again.
9. the gas-liquid separated evaporimeter according to claims 1 to 3 any one, it is characterized in that: described wireway (21) is provided with a control valve (24), a pressure sensor and temperature sensor are set before condensator outlet or throttling arrangement simultaneously, after evaporator inlet or throttling arrangement, be also provided with pressure sensor, computer chip gathers the information of above-mentioned pressure and temperature sensor and calculates mass dryness fraction thus the aperture of control and regulation valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375895.2A CN104422201B (en) | 2013-08-27 | 2013-08-27 | A kind of gas-liquid separated evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375895.2A CN104422201B (en) | 2013-08-27 | 2013-08-27 | A kind of gas-liquid separated evaporator |
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| CN104422201A true CN104422201A (en) | 2015-03-18 |
| CN104422201B CN104422201B (en) | 2018-05-08 |
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| CN201310375895.2A Active CN104422201B (en) | 2013-08-27 | 2013-08-27 | A kind of gas-liquid separated evaporator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016850A (en) * | 2016-07-15 | 2016-10-12 | 珠海格力电器股份有限公司 | Air conditioner, dry-type shell-and-tube evaporator and refrigerant distributor assembly thereof |
| CN106016841A (en) * | 2016-05-12 | 2016-10-12 | 南京师范大学 | Microchannel heat pipe evaporator |
| CN106839531A (en) * | 2017-03-22 | 2017-06-13 | 江苏中关村科技产业园节能环保研究有限公司 | A kind of gas bypass micro-channel evaporator |
| CN106985637A (en) * | 2017-03-22 | 2017-07-28 | 溧阳市英创机电技术有限公司 | A kind of automobile air-conditioning refrigeration equipment |
| CN107101422A (en) * | 2017-05-19 | 2017-08-29 | 珠海格力电器股份有限公司 | Evaporator and the indoor apparatus of air conditioner with it |
| CN107917523A (en) * | 2017-10-25 | 2018-04-17 | 西安交通大学 | A kind of outdoor heat exchanger for heat pump and its control method |
| CN109682120A (en) * | 2019-01-28 | 2019-04-26 | 天津商业大学 | A kind of high-efficiency evaporator for reducing defrost heat and spreading in vain |
| CN111213020A (en) * | 2017-10-11 | 2020-05-29 | 株式会社电装 | Heat exchanger |
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| US1071002A (en) * | 1912-07-23 | 1913-08-19 | Universal Refrigerating Company | Refrigerating apparatus. |
| EP0313079A2 (en) * | 1987-10-23 | 1989-04-26 | Hitachi, Ltd. | Falling film evaporator |
| JPH07332806A (en) * | 1994-04-12 | 1995-12-22 | Nippondenso Co Ltd | Refrigerator |
| CN101298950A (en) * | 2008-06-20 | 2008-11-05 | 清华大学 | Wind cooling heat exchanger with solution division structure for air conditioner |
| CN102997505A (en) * | 2012-11-29 | 2013-03-27 | 重庆美的通用制冷设备有限公司 | Single-flow dry evaporator |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US1071002A (en) * | 1912-07-23 | 1913-08-19 | Universal Refrigerating Company | Refrigerating apparatus. |
| EP0313079A2 (en) * | 1987-10-23 | 1989-04-26 | Hitachi, Ltd. | Falling film evaporator |
| JPH07332806A (en) * | 1994-04-12 | 1995-12-22 | Nippondenso Co Ltd | Refrigerator |
| CN101298950A (en) * | 2008-06-20 | 2008-11-05 | 清华大学 | Wind cooling heat exchanger with solution division structure for air conditioner |
| CN102997505A (en) * | 2012-11-29 | 2013-03-27 | 重庆美的通用制冷设备有限公司 | Single-flow dry evaporator |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016841B (en) * | 2016-05-12 | 2018-05-15 | 南京师范大学 | A kind of micro channel heat pipe evaporator |
| CN106016841A (en) * | 2016-05-12 | 2016-10-12 | 南京师范大学 | Microchannel heat pipe evaporator |
| CN106016850B (en) * | 2016-07-15 | 2018-05-18 | 珠海格力电器股份有限公司 | A kind of air-conditioning, dry type shell and tube evaporator and its coolant distributor component |
| CN106016850A (en) * | 2016-07-15 | 2016-10-12 | 珠海格力电器股份有限公司 | Air conditioner, dry-type shell-and-tube evaporator and refrigerant distributor assembly thereof |
| CN106985637A (en) * | 2017-03-22 | 2017-07-28 | 溧阳市英创机电技术有限公司 | A kind of automobile air-conditioning refrigeration equipment |
| CN106839531A (en) * | 2017-03-22 | 2017-06-13 | 江苏中关村科技产业园节能环保研究有限公司 | A kind of gas bypass micro-channel evaporator |
| CN106985637B (en) * | 2017-03-22 | 2019-07-26 | 广西易德科技有限责任公司 | A kind of automobile air-conditioning refrigeration equipment |
| CN107101422A (en) * | 2017-05-19 | 2017-08-29 | 珠海格力电器股份有限公司 | Evaporator and the indoor apparatus of air conditioner with it |
| CN107101422B (en) * | 2017-05-19 | 2023-10-27 | 珠海格力电器股份有限公司 | Evaporator and air conditioner indoor unit with same |
| CN111213020A (en) * | 2017-10-11 | 2020-05-29 | 株式会社电装 | Heat exchanger |
| CN111213020B (en) * | 2017-10-11 | 2021-09-21 | 株式会社电装 | Heat exchanger |
| CN107917523A (en) * | 2017-10-25 | 2018-04-17 | 西安交通大学 | A kind of outdoor heat exchanger for heat pump and its control method |
| CN107917523B (en) * | 2017-10-25 | 2019-12-20 | 西安交通大学 | Outdoor heat exchanger for heat pump and control method thereof |
| CN109682120A (en) * | 2019-01-28 | 2019-04-26 | 天津商业大学 | A kind of high-efficiency evaporator for reducing defrost heat and spreading in vain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104422201B (en) | 2018-05-08 |
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