CN202133192U - Refrigerant liquid distributing device for falling film evaporator - Google Patents
Refrigerant liquid distributing device for falling film evaporator Download PDFInfo
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- CN202133192U CN202133192U CN201120134421U CN201120134421U CN202133192U CN 202133192 U CN202133192 U CN 202133192U CN 201120134421 U CN201120134421 U CN 201120134421U CN 201120134421 U CN201120134421 U CN 201120134421U CN 202133192 U CN202133192 U CN 202133192U
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Abstract
The utility model provides a refrigerant liquid distributing device for a falling film evaporator, comprising a housing with the upper part provided with an inlet pipe and a gas phase separating hole, an inclined plane distribution board, a porous filling layer, a first order distribution hole plate and a second order distribution hole plate. A vapor liquid refrigerant in the utility model successively goes through the inlet pipe, the inclined plane distribution board, the porous filling layer, the first order distribution hole plate and the second order distribution hole plate, realizing vapor liquid separation and uniform and stable distribution of a liquid refrigerant, more effectively utilizing heat exchange area, and improving heat exchange efficiency, thereby reducing energy consumption; and via a reasonable liquid phase distribution, contact time of the liquid refrigerant and an evaporation tube bank can be guaranteed, phenomenon of ''dry spot'' in the local area of the evaporation tube bank can be prevented, stability and reliability of the whole set can be guaranteed, manufacturing process can be simplified, and failure rate of products can be reduced; the refrigerant liquid distributing device is also characterized by simple and reasonable structure, long service lifetime, low cost, and low requirement for machining precision.
Description
Technical field
The utility model relates to the cold-producing medium liquid distributor of a kind of evaporimeter, particularly a kind of downward film evaporator.
Background technology
In big-and-middle-sized refrigeration plant, evaporimeter plays key effect to system energy consumption and equipment performance.Downward film evaporator is compared with traditional flooded evaporator, has the following advantages: 1) heat transfer coefficient is high, and the unit are exchange capability of heat is strong; 2) do not exist because the feed flow differential static pressure that the refrigerant liquid post forms; 3) refrigerant charge is few, can reduce the manufacturing cost and the maintenance cost of unit.But downward film evaporator has very high requirement to the uniform distribution of cold-producing medium.If two phase refrigerant evenly is not sprayed in the steam-generating bank, will cause the steam-generating bank regional area " dry spot " phenomenon to occur, can't participate in the latent heat heat exchange, thereby influence the overall performance of unit greatly.
It is the liquid distributor of five layers of AND DEWATERING FOR ORIFICE STRUCTURE that at present more advanced technological downward film evaporator adopts, and cold-producing medium is done repeated dispensing from top to bottom to reach the purpose of uniform distribution.Its first and second layer orifice plate vertically reaches transverse distribution to two phase refrigerant, and gaseous refrigerant is separated.Liquid refrigerant drips the two phase flow Distribution Layer of three layers of diamond shaped of pouring to the.Cold-producing medium after over-allocation gets into the 4th layer.Liquid refrigerant through the 4th layer gets into last one deck, and keeps certain liquid level, drips to the heat-exchanging tube bundle of bottom from the layer 5 orifice plate with the gravity form.But this architecture is comparatively complicated, and the difficulty of processing height causes distributivity can reach optimum efficiency.Therefore, be necessary to do further improvement and perfect.
The utility model content
The purpose of the utility model aims to provide a kind of simple and reasonable, low cost of manufacture, the production efficiency height separates with the vapour-liquid cold-producing medium and the cold-producing medium liquid distributor of the downward film evaporator of distributed uniform, to overcome weak point of the prior art.
Press the cold-producing medium liquid distributor of a kind of downward film evaporator of this purpose design; Comprise housing; The inlet tube on the top of housing and gas phase separation hole, its architectural feature are that said lower part of frame is provided with inclined-plane distributing pore plate, porous aggregate layer and one-level distributing pore plate and secondary distribution orifice plate.
Said inclined-plane distributing pore plate is assembled by vertical skewback and horizontal skewback, and the one-level distributing pore plate of inclined-plane distributing pore plate and its bottom is provided with the angle of inclination, and this angle of inclination is between the 5-30 degree.
Offer the through hole of equidistant and homalographic on the said inclined-plane distributing pore plate, the area sum of this through hole is 4-5 a times of sectional area in the inlet tube; Inclined-plane distributing pore plate and housing cooperatively interact fixing.
Said one-level distributing pore plate and secondary distribution orifice plate are arranged at the bottom of inclined-plane distributing pore plate, and one-level distributing pore plate and secondary distribution orifice plate are setting up and down, and it is fixing to cooperatively interact.
Be respectively arranged with first dispensing orifice and second dispensing orifice on said one-level distributing pore plate and the secondary distribution orifice plate, the area sum of first dispensing orifice, second dispensing orifice is 4-5 a times of sectional area in the inlet tube.
Said first dispensing orifice is vertical each other with second dispensing orifice, and for being crisscross arranged; The arrangement form of first dispensing orifice and second dispensing orifice is a rectangular array.
The filler of said porous aggregate layer is metallic article or nonmetal product.
Vapour-liquid cold-producing medium in the utility model passes through inlet tube, inclined-plane distributing pore plate, porous aggregate layer, one-level distributing pore plate and secondary distribution orifice plate successively; Realize that vapor-liquid separation and liquid refrigerant evenly and steadily distribute; Can more effectively utilize heat exchange area; Improve heat exchange efficiency, thereby cut down the consumption of energy; Distribute through rational liquid phase simultaneously and can guarantee liquid refrigerant and steam-generating bank time of contact; Avoid the steam-generating bank regional area " dry spot " phenomenon to occur; Guarantee the stability and the reliability of whole unit, and simplified manufacturing technique, the disqualification rate of reduction product; It has simple and reasonable, long service life, with low cost and characteristics that requirement on machining accuracy is low.
Description of drawings
Fig. 1 is an embodiment decomposition texture sketch map of the utility model.
Fig. 2 is the perspective view after Fig. 1 assembling.
Among the figure: 1 is inlet tube, and 2 is the inclined-plane distributing pore plate, and 3 is the porous aggregate layer, and 4 is the one-level distributing pore plate, and 5 is the secondary distribution orifice plate, and 6 is housing, and 7 is the gas phase separation hole.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Referring to Fig. 1-Fig. 2, the cold-producing medium liquid distributor of this downward film evaporator comprises housing 6, and the top of housing 6 is provided with inlet tube 1 and gas phase separation hole 7, and gas phase separation hole 7 is arranged at the left and right sides at housing 6 tops respectively.For realizing can be evenly and be dispensed to steam-generating bank reposefully with the vapour-liquid cold-producing medium in the housing 6, the bottom of housing 6 is provided with inclined-plane distributing pore plate 2, porous aggregate layer 3, one-level distributing pore plate 4 and secondary distribution orifice plate 5.
One-level distributing pore plate 4 is arranged at the bottom of inclined-plane distributing pore plate 2; Secondary distribution orifice plate 5 is arranged at the bottom of one-level distributing pore plate 4; One-level distributing pore plate 4 is respectively arranged with first dispensing orifice and second dispensing orifice with secondary distribution orifice plate 5, and the area sum of first dispensing orifice, second dispensing orifice is 4-5 a times of sectional area in the inlet tube 1.First dispensing orifice is vertical each other with second dispensing orifice, and for being crisscross arranged, the arrangement form of first dispensing orifice and second dispensing orifice is a rectangular array.
Formation one can be held the cavity of porous aggregate layer 3 between distributing pore plate parts and the inclined-plane distributing pore plate 2, and porous aggregate layer 3 is positioned in the cavity, and is welded to each other fixing with inclined-plane distributing pore plate 2.The filler of porous aggregate layer is metallic article or nonmetal product.
Inclined-plane distributing pore plate 2 comprises vertical skewback and horizontal skewback; This vertical skewback respectively is two with the number of horizontal skewback; Vertically skewback is welded into integral body or global formation with horizontal skewback; Inclined-plane distributing pore plate 2 has the angle of inclination with the one-level distributing pore plate 4 of its bottom, and this angle of inclination is between the 5-30 degree.Offer the through hole of equidistant and homalographic on the inclined-plane distributing pore plate, the area sum of this through hole is 4-5 a times of sectional area in the inlet tube, and inclined-plane distributing pore plate and housing cooperatively interact fixing.
During installation; Earlier that inclined-plane distributing pore plate 2 is fixing with the bottom welding of housing 6; Distribute first chamber as cold-producing medium, the porous aggregate layer 3 below inclined-plane distributing pore plate 2 is put into the filler that is complementary with its volume, and distributes second chamber with 4 welding of one-level distributing pore plate are fixing as cold-producing medium.Last below one-level distributing pore plate 4, distribute the 3rd chamber as cold-producing medium with 5 welding of secondary distribution orifice plate are fixing.
The operation principle of the utility model is:
Cold-producing medium distributes first chamber: the vapour-liquid two phase refrigerant sprays to inclined-plane distributing pore plate 2 by inlet tube 1; Inclined-plane distributing pore plate 2 has certain angle of inclination; The angle of inclination of its vertical plate is 5 °-10 °; The angle of inclination of transverse plate is 10 °-20 ° common gradients that form; Make the kinetic energy of vapour-liquid cold-producing medium reach lateral flow as the powered liquid refrigerant to vertical, and in flow process, infiltrate the porous aggregate layer 3 from the through hole of inclined-plane distributing pore plate 2 gradually, the flash gas in the vapour-liquid two phase refrigerant is 7 effusions from the gas phase separation hole.So far, distribute first chamber not only to accomplish the separation of gas-liquid two-phase cold-producing medium, and liquid refrigeration is accomplished vertical and horizontal distribution simultaneously at cold-producing medium.
Cold-producing medium distributes second chamber: after liquid refrigerant gets into porous aggregate layer 3; Resistance different spontaneous distribution of reason owing to the thickness difference of filler; By the bigger middle mind-set resistance of resistance reduce gradually around spontaneous distribution; And this filler self has the characteristic that infiltration disperses, also good uniform distribution liquid refrigerant.Therefore, distribute second chamber at cold-producing medium, the spontaneous completion of liquid refrigerant distributes.
Cold-producing medium distributes the 3rd chamber: the liquid refrigerant after second chamber that cold-producing medium distributes is distributed infiltrates into one-level distributing pore plate 4; And drip through first dispensing orifice and to drench to secondary distribution orifice plate 5; Through second dispensing orifice evenly and drip reposefully and drench to steam-generating bank; Therefore, distribute the 3rd chamber at cold-producing medium, liquid refrigerant is accomplished evenly and steadily and is distributed.
Claims (7)
1. the cold-producing medium liquid distributor of a downward film evaporator; Comprise housing (6); The inlet tube (1) on the top of housing (6) and gas phase separation hole (7) is characterized in that the bottom of said housing (6) is provided with inclined-plane distributing pore plate (2), porous aggregate layer (3) and one-level distributing pore plate (4) and secondary distribution orifice plate (5).
2. according to the cold-producing medium liquid distributor of the said downward film evaporator of claim 1; It is characterized in that said inclined-plane distributing pore plate (2) is assembled by vertical skewback and horizontal skewback; Inclined-plane distributing pore plate (2) is provided with the angle of inclination with the one-level distributing pore plate (4) of its bottom, and this angle of inclination is between the 5-30 degree.
3. according to the cold-producing medium liquid distributor of claim 1 or 2 said downward film evaporators, it is characterized in that offering on the said inclined-plane distributing pore plate (2) through hole of equidistant and homalographic, the area sum of this through hole is 4-5 a times of the interior sectional area of inlet tube (1); Inclined-plane distributing pore plate (2) cooperatively interacts fixing with housing (6).
4. according to the cold-producing medium liquid distributor of the said downward film evaporator of claim 3; It is characterized in that said one-level distributing pore plate (4) and secondary distribution orifice plate (5) are arranged at the bottom of inclined-plane distributing pore plate (2); One-level distributing pore plate (4) and secondary distribution orifice plate (5) are setting up and down, and it is fixing to cooperatively interact.
5. according to the cold-producing medium liquid distributor of the said downward film evaporator of claim 4; It is characterized in that being respectively arranged with first dispensing orifice and second dispensing orifice on said one-level distributing pore plate (4) and the secondary distribution orifice plate (5), the area sum of first dispensing orifice, second dispensing orifice is 4-5 a times of the interior sectional area of inlet tube (1).
6. according to the cold-producing medium liquid distributor of the said downward film evaporator of claim 5, it is characterized in that said first dispensing orifice is vertical for each other with second dispensing orifice, and for being crisscross arranged; The arrangement form of first dispensing orifice and second dispensing orifice is a rectangular array.
7. according to the cold-producing medium liquid distributor of the said downward film evaporator of claim 6, the filler that it is characterized in that said porous aggregate layer (3) is metallic article or nonmetal product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120134421U CN202133192U (en) | 2011-04-29 | 2011-04-29 | Refrigerant liquid distributing device for falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120134421U CN202133192U (en) | 2011-04-29 | 2011-04-29 | Refrigerant liquid distributing device for falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202133192U true CN202133192U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120134421U Expired - Fee Related CN202133192U (en) | 2011-04-29 | 2011-04-29 | Refrigerant liquid distributing device for falling film evaporator |
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| CN (1) | CN202133192U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661638A (en) * | 2012-04-18 | 2012-09-12 | 重庆美的通用制冷设备有限公司 | Refrigerant distributor of falling film evaporator for water chilling unit |
| CN103285606A (en) * | 2012-02-24 | 2013-09-11 | 珠海格力电器股份有限公司 | Falling film device and seawater desalination device |
| CN104154803A (en) * | 2014-08-19 | 2014-11-19 | 珠海格力电器股份有限公司 | Refrigerant shunting structure, microchannel shunting assembly, heat exchanger and air conditioner |
| CN106568242A (en) * | 2016-11-02 | 2017-04-19 | 西安交通大学 | Liquid film distributor for multi-row horizontal pipe bundles |
| CN106766407A (en) * | 2016-11-21 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | Distributor, evaporator and handpiece Water Chilling Units |
| CN108955326A (en) * | 2018-07-12 | 2018-12-07 | 上海交通大学 | Microchannel gas-Liquid separating evaporator device based on distribution recovery approach |
| CN109469994A (en) * | 2018-11-14 | 2019-03-15 | 珠海格力电器股份有限公司 | Falling film evaporator and air conditioning system |
| CN113251709A (en) * | 2020-02-13 | 2021-08-13 | Lg电子株式会社 | Evaporator with a heat exchanger |
| US11619428B2 (en) | 2018-04-06 | 2023-04-04 | Carrier Corporation | Integrated separator and distributor |
-
2011
- 2011-04-29 CN CN201120134421U patent/CN202133192U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103285606A (en) * | 2012-02-24 | 2013-09-11 | 珠海格力电器股份有限公司 | Falling film device and seawater desalination device |
| CN102661638A (en) * | 2012-04-18 | 2012-09-12 | 重庆美的通用制冷设备有限公司 | Refrigerant distributor of falling film evaporator for water chilling unit |
| CN102661638B (en) * | 2012-04-18 | 2014-03-12 | 重庆美的通用制冷设备有限公司 | Refrigerant distributor of falling film evaporator for water chilling unit |
| CN104154803A (en) * | 2014-08-19 | 2014-11-19 | 珠海格力电器股份有限公司 | Refrigerant shunting structure, microchannel shunting assembly, heat exchanger and air conditioner |
| CN106568242A (en) * | 2016-11-02 | 2017-04-19 | 西安交通大学 | Liquid film distributor for multi-row horizontal pipe bundles |
| CN106766407A (en) * | 2016-11-21 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | Distributor, evaporator and handpiece Water Chilling Units |
| CN106766407B (en) * | 2016-11-21 | 2018-08-07 | 重庆美的通用制冷设备有限公司 | Distributor, evaporator and handpiece Water Chilling Units |
| US11619428B2 (en) | 2018-04-06 | 2023-04-04 | Carrier Corporation | Integrated separator and distributor |
| CN108955326A (en) * | 2018-07-12 | 2018-12-07 | 上海交通大学 | Microchannel gas-Liquid separating evaporator device based on distribution recovery approach |
| CN108955326B (en) * | 2018-07-12 | 2020-03-17 | 上海交通大学 | Micro-channel gas-liquid separation evaporator device based on distribution and recovery channel |
| CN109469994A (en) * | 2018-11-14 | 2019-03-15 | 珠海格力电器股份有限公司 | Falling film evaporator and air conditioning system |
| CN113251709A (en) * | 2020-02-13 | 2021-08-13 | Lg电子株式会社 | Evaporator with a heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20190429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |