CN103062962A - Gas-liquid separative falling film type evaporator - Google Patents
Gas-liquid separative falling film type evaporator Download PDFInfo
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- CN103062962A CN103062962A CN2012105808237A CN201210580823A CN103062962A CN 103062962 A CN103062962 A CN 103062962A CN 2012105808237 A CN2012105808237 A CN 2012105808237A CN 201210580823 A CN201210580823 A CN 201210580823A CN 103062962 A CN103062962 A CN 103062962A
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Abstract
The invention discloses a gas-liquid separative falling film type evaporator which comprises a distributor and the distributor comprises a baffle, a pressure case and a gravity case which is provided with the pressure case; first through holes are uniformly arranged at the bottom of the gravity case and a plurality of clapboards are arranged at the bottom of the gravity case along the transverse direction; gaps are formed on the periphery of the pressure case and the periphery of the gravity case; second through holes are uniformly arranged on the top of the pressure case; the baffle is arranged above the pressure case, the two lateral sides of the baffle are fixedly arranged on the gravity case, a pore plate which is provided with a cover plate is arranged at the edge of the baffle and gaps are formed between the pore plate and the cover plate to form an air outlet groove; and an inlet pipe which is communicated with the pressure case is arranged on the baffle. The gas-liquid separative falling film type evaporator distributes refrigerant working medium through the combination of pressure potential energy and gravity potential energy, and accordingly has the advantages of being uniform in liquid separation, high in reliability, avoiding the splash and leakage of refrigerant working medium, being low in pressure loss, fully exerting the performance superiority, enabling the refrigerant working medium and a heat exchange pipe group to be fully contacted and greatly improving the evaporating efficiency.
Description
Technical field
The present invention relates to a kind of evaporimeter, refer to particularly a kind of gas-liquid separation downward film evaporator.
Background technology
In the course of work of gas-liquid separation downward film evaporator, from becoming the fluid-mixing of cryogenic liquid and cryogenic gas after condenser carries the high temperature condensed fluid come by the throttling arrangement throttling expansion, then, fluid-mixing enters the distributor in the downward film evaporator, drip as required and pour on the heat exchanger tube, cold is passed to the user, after self is evaporated, enter the air entry of compressor, enter condenser after the compression.At present, existing evaporimeter produces easily between gas-liquid two-phase and disturbs in said process, often exists gas-liquid separation difficulty, gas passage to have the problem of larger obstruction; In addition, the uniform distribution of refrigerant medium is the basis that each parts of evaporimeter can well move, and the distributed uniform degree of refrigerant medium is still not ideal enough in the present downward film evaporator, can not reach requirement.Therefore, reach smoothly the uniform distribution of refrigerant liquid for guaranteeing gas-liquid separation, it is very necessary designing a kind of evaporimeter reasonable and precision machining.
Summary of the invention
The objective of the invention is provides a kind of gas-liquid separation downward film evaporator for the problems referred to above, this downward film evaporator can be realized the gas-liquid effective separation of refrigerant medium and the uniform distribution of liquid coolant working medium, thereby so that downward film evaporator is in good running environment.
For achieving the above object, the technical solution used in the present invention is: a kind of gas-liquid separation downward film evaporator, it comprises housing and is fixed on the interior heat exchange nest of tubes of housing, described case top has the gas outlet, described heat exchange nest of tubes top is provided with distributor, described distributor comprises baffle plate, pressure cell and gravity box, described gravity box bottom even is densely covered with the first through hole and broad ways is provided with the polylith dividing plate, in the gravity box pressure cell is housed, leave the gap around the described pressure cell with around the gravity box, the top of described pressure cell evenly is densely covered with the second through hole, the top of described pressure cell is provided with baffle plate, the both sides of described baffle plate are fixed on the described gravity box, the edge of described baffle plate is provided with orifice plate, and orifice plate is provided with cover plate, leaves the gap between orifice plate and cover plate and forms air drain, described baffle plate is provided with inlet tube, and described inlet tube is communicated with described pressure cell.
The present invention cooperates equal liquid by pressure cell with the gravity box, the gas-liquid mixed refrigerant medium enters bottom surface and peripheral all pressure cells of sealing from inlet tube, then the second through hole from the pressure cell top evenly sprays, scatter around impacting on baffle plate, then the liquid runs down baffle plate side in the gas-liquid mixed refrigerant medium is along falling into the gravity box, the first through hole from gravity box bottom evenly flows out at last, continuously flow on the heat exchanger tube of its below, and the gas in the gas-liquid mixed refrigerant medium is after the discharge of the outgassing groove between orifice plate and cover plate, gas outlet through case top is sucked by compressor, this employing pressure potential and the gravitional force distribution refrigerant medium that cooperatively interacts, gas coolant working medium is separated in the gravity box with liquid coolant working medium, and so that follow-up liquid coolant working medium separatory reliability is high, good uniformity, can realize that separatory is even, prevent the refrigerant medium leakage of splashing, and the pressure loss is little; The method of salary distribution of refrigerant medium among the present invention is so that downward film evaporator can be given full play to its performance advantage, so that refrigerant medium fully contacts with the heat exchange nest of tubes, has significantly improved evaporation efficiency; The present invention is simple and compact for structure, good manufacturability.
Further, the quantity of the second through hole in the described pressure cell is: 15～150, the aperture of described the second through hole is: 4mm～40mm.Utilize pressure potential to realize the uniform distribution first time of refrigerant medium in the second through hole, but the second through hole homogenize liquid that evenly gathers stream prevent that the refrigerant medium that sprays from splashing from pressure cell.
Further, the quantity of the first through hole in the described gravity box is: 800～4000, the aperture of described the first through hole is: 2mm～10mm.Utilize gravitional force to realize the final uniform distribution of refrigerant medium in the first through hole.
Further, described distributor be arranged on described housing the gas outlet under.Distributor be arranged on venthole under, be conducive in the distributor isolated gas and discharge smoothly from venthole.
Preferably, described dividing plate is elongated dividing plate, and the height of described dividing plate is: 5mm～50mm.Dividing plate is used for the bottom surface of pressure cell and gravity box is separated, in order to reserved the hydrospace.
Further preferably, be evenly equipped with some pores on the described orifice plate, the circulation area of described pore is: 0.01m
2～0.3 m
2The pore of isolated gas on orifice plate in the gravity box discharged distributor from the outgassing groove between orifice plate and cover plate again.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of gas-liquid separation downward film evaporator.
Fig. 2 is the structural representation of distributor among Fig. 1.
Fig. 3 is the decomposition texture schematic diagram of distributor among Fig. 2.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments, be convenient to more clearly understand the present invention, but they do not consist of restriction to the present invention.
Such as Fig. 1, a kind of gas-liquid separation downward film evaporator, it comprises housing 1 and is horizontally set on heat exchange nest of tubes 2 in the housing 1, and described housing 1 top has gas outlet 3, and (heat exchange nest of tubes directly over) is provided with distributor 4 under the gas outlet 3 of described housing 1.
Such as Fig. 2, shown in Figure 3, distributor 4 comprises and being rectangle and gravity box 403 that the top is opened wide, described gravity box 403 bottom evens are densely covered with the first circular through hole 5, described gravity box 403 bottom broad ways evenly are provided with four elongated dividing plates 6 parallel to each other, described dividing plate 6 is provided with the pressure cell 402 that rectangle is hollow form, the outside sidewall 12 of described pressure cell 402 and 13 of the inside side walls of gravity box 403 leave the gap, that is: in the gravity box 403 pressure cell 402 is housed, do not contact around the pressure cell 402 with around the gravity box 403, left the liquid gap, the top of described pressure cell 402 evenly is densely covered with the second circular through hole 7, the top of described pressure cell 402 is provided with baffle plate 401, the both sides of described baffle plate 401 are fixed on the described gravity box 403, the top of gravity box 403 is covered, leave the gap between pressure cell 402 tops in the top of described baffle plate 401 and the gravity box 403, the edge of described baffle plate 401 is provided with orifice plate 8, orifice plate 8 is provided with the cover plate 9 that is bending, 9 of orifice plate 8 and cover plates leave the gap and form air drain 10, described baffle plate 401 is provided with inlet tube 11, described inlet tube 11 and described pressure cell 402 internal communication.Wherein, be evenly equipped with some pores 801 on the orifice plate 8 on gravity box 403 tops, the preferred 0.01m of the circulation area of pore 801
2～0.3m
2In addition, preferred 15～150 of the quantity of the second through hole 7 in the described pressure cell 402, the preferred 4mm～40mm in the aperture of described the second through hole 7; Preferred 800～4000 of the quantity of the first through hole 5 in the described gravity box 403, the preferred 2mm～10mm in the aperture of described the first through hole 5; The height of the elongated dividing plate 6 of gravity box 403 bottoms is preferably at 5 mm～50 mm.
The course of work of the present invention is as shown in Figure 1: after the gas-liquid mixed refrigerant medium enters distributor 4, be full of whole pressure cell 402, then the second through hole 7 that arranges from pressure cell 402 tops evenly ejects, guarantee that the second through hole 7 places spray the pressure drop that uniform method is the whole pressure cell 402 of control, and the pressure drop that guarantees actual pressure box 402 whether to equal the method for design pressure drop be to utilize fluid analysis software (CFD) simulation; After the gas-liquid mixed refrigerant medium evenly ejects from the second through hole 7, impact on baffle plate 401, scatter around drop or the liquid stream, liquid in the gas-liquid mixed refrigerant medium is as shown in arrow 14, evenly fall after rise to gravity box 403 in gap between pressure cell 402 and gravity box 403 sidewalls, the first through hole 5 by gravity box 403 bottoms continuously flows on the heat exchange nest of tubes 2 of its below, gas in the gas-liquid mixed refrigerant medium is as shown in arrow 15, pore 801 from the baffle plate 401 edge orifice plates 8 on gravity box 403 tops flows out, and then the outgassing groove 10 that forms from the gap between orifice plate 8 and the cover plate 9 is discharged, gas outlet 3 through evaporator shell 1 top is sucked by compressor, it is compressed to enter compressor, and gas coolant working medium is separated in gravity box 403 with liquid coolant working medium.
Claims (6)
1. gas-liquid separation downward film evaporator, it comprises housing (1) and is fixed on the interior heat exchange nest of tubes (2) of housing (1), described case top has gas outlet (3), described heat exchange nest of tubes (2) top is provided with distributor (4), it is characterized in that: described distributor (4) comprises baffle plate (401), pressure cell (402) and gravity box (403), described gravity box (403) bottom even is densely covered with the first through hole (5) and broad ways is provided with polylith dividing plate (6), pressure cell (402) is housed in the gravity box (403), leave the gap around the described pressure cell (402) with around the gravity box (403), the top of described pressure cell (402) evenly is densely covered with the second through hole (7), the top of described pressure cell (402) is provided with baffle plate (401), the both sides of described baffle plate (401) are fixed on the described gravity box (403), the edge of described baffle plate (401) is provided with orifice plate (8), orifice plate (8) is provided with cover plate (9), leave the gap between orifice plate (8) and cover plate (9) and form air drain (10), described baffle plate (401) is provided with inlet tube (11), and described inlet tube (11) is communicated with described pressure cell (402).
2. a kind of gas-liquid separation downward film evaporator according to claim 1, it is characterized in that: the quantity of the second through hole (7) in the described pressure cell (402) is: 15～150, the aperture of described the second through hole (7) is: 4mm～40mm.
3. a kind of gas-liquid separation downward film evaporator according to claim 1, it is characterized in that: the quantity of the first through hole (5) in the described gravity box (403) is: 800～4000, the aperture of described the first through hole (5) is: 2mm～10mm.
4. a kind of gas-liquid separation downward film evaporator according to claim 1 is characterized in that: described distributor (4) be arranged on described housing (1) gas outlet (3) under.
5. a kind of gas-liquid separation downward film evaporator according to claim 1, it is characterized in that: described dividing plate (6) is elongated dividing plate (6), and the height of described dividing plate (6) is: 5mm～50mm.
6. a kind of gas-liquid separation downward film evaporator according to claim 1, it is characterized in that: be evenly equipped with some pores (801) on the described orifice plate (8), the circulation area of described pore (801) is: 0.01m
2～0.3 m
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580823.7A CN103062962B (en) | 2012-12-27 | 2012-12-27 | Gas-liquid separative falling film type evaporator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210580823.7A CN103062962B (en) | 2012-12-27 | 2012-12-27 | Gas-liquid separative falling film type evaporator |
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| CN103062962A true CN103062962A (en) | 2013-04-24 |
| CN103062962B CN103062962B (en) | 2015-04-29 |
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| CN201210580823.7A Active CN103062962B (en) | 2012-12-27 | 2012-12-27 | Gas-liquid separative falling film type evaporator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482400A (en) * | 2016-11-15 | 2017-03-08 | 顿汉布什(中国)工业有限公司 | A kind of for the allotter in downward film evaporator |
| CN106662381A (en) * | 2014-07-01 | 2017-05-10 | 大金工业株式会社 | Falling film evaporator |
| CN107667265A (en) * | 2015-05-27 | 2018-02-06 | 开利公司 | Multistage distribution system for evaporator |
| CN112283983A (en) * | 2019-07-23 | 2021-01-29 | 江森自控空调冷冻设备(无锡)有限公司 | Falling film evaporator and air conditioning system |
| WO2021022870A1 (en) * | 2019-08-08 | 2021-02-11 | 青岛海尔空调电子有限公司 | Liquid uniformizing device and air conditioner |
| CN113251707A (en) * | 2020-02-13 | 2021-08-13 | Lg电子株式会社 | Evaporator with a heat exchanger |
| WO2021221105A1 (en) * | 2020-05-01 | 2021-11-04 | 三菱重工サーマルシステムズ株式会社 | Evaporator |
| US11624533B2 (en) | 2020-02-13 | 2023-04-11 | Lg Electronics Inc. | Evaporator |
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| EP0313079A2 (en) * | 1987-10-23 | 1989-04-26 | Hitachi, Ltd. | Falling film evaporator |
| CN201527214U (en) * | 2009-06-30 | 2010-07-14 | 广州联合冷热设备有限公司 | Refrigerant distributor |
| CN202158699U (en) * | 2011-06-27 | 2012-03-07 | 四川同达博尔置业有限公司 | Refrigerating fluid distributor of falling film evaporator |
| CN203083207U (en) * | 2012-12-27 | 2013-07-24 | 麦克维尔空调制冷(武汉)有限公司 | Gas-liquid separation falling film type evaporator |
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2012
- 2012-12-27 CN CN201210580823.7A patent/CN103062962B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0313079A2 (en) * | 1987-10-23 | 1989-04-26 | Hitachi, Ltd. | Falling film evaporator |
| CN201527214U (en) * | 2009-06-30 | 2010-07-14 | 广州联合冷热设备有限公司 | Refrigerant distributor |
| CN202158699U (en) * | 2011-06-27 | 2012-03-07 | 四川同达博尔置业有限公司 | Refrigerating fluid distributor of falling film evaporator |
| CN203083207U (en) * | 2012-12-27 | 2013-07-24 | 麦克维尔空调制冷(武汉)有限公司 | Gas-liquid separation falling film type evaporator |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662381A (en) * | 2014-07-01 | 2017-05-10 | 大金工业株式会社 | Falling film evaporator |
| CN107667265A (en) * | 2015-05-27 | 2018-02-06 | 开利公司 | Multistage distribution system for evaporator |
| CN107667265B (en) * | 2015-05-27 | 2020-11-13 | 开利公司 | Multi-stage distribution system for evaporators |
| US11073314B2 (en) | 2015-05-27 | 2021-07-27 | Carrier Corporation | Mulitlevel distribution system for evaporator |
| CN106482400B (en) * | 2016-11-15 | 2019-04-12 | 顿汉布什(中国)工业有限公司 | A kind of distributor in downward film evaporator |
| CN106482400A (en) * | 2016-11-15 | 2017-03-08 | 顿汉布什(中国)工业有限公司 | A kind of for the allotter in downward film evaporator |
| CN112283983B (en) * | 2019-07-23 | 2022-07-15 | 约克（无锡）空调冷冻设备有限公司 | Falling film evaporator and air conditioning system |
| CN112283983A (en) * | 2019-07-23 | 2021-01-29 | 江森自控空调冷冻设备(无锡)有限公司 | Falling film evaporator and air conditioning system |
| WO2021022870A1 (en) * | 2019-08-08 | 2021-02-11 | 青岛海尔空调电子有限公司 | Liquid uniformizing device and air conditioner |
| CN113251707A (en) * | 2020-02-13 | 2021-08-13 | Lg电子株式会社 | Evaporator with a heat exchanger |
| US11624533B2 (en) | 2020-02-13 | 2023-04-11 | Lg Electronics Inc. | Evaporator |
| US11898780B2 (en) | 2020-02-13 | 2024-02-13 | Lg Electronics Inc. | Evaporator |
| JP2021175922A (en) * | 2020-05-01 | 2021-11-04 | 三菱重工サーマルシステムズ株式会社 | Evaporator |
| WO2021221105A1 (en) * | 2020-05-01 | 2021-11-04 | 三菱重工サーマルシステムズ株式会社 | Evaporator |
| CN115485517A (en) * | 2020-05-01 | 2022-12-16 | 三菱重工制冷空调系统株式会社 | Evaporator with a heat exchanger |
| CN115485517B (en) * | 2020-05-01 | 2023-12-26 | 三菱重工制冷空调系统株式会社 | Evaporator |
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| CN103062962B (en) | 2015-04-29 |
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