CN2903855Y - Plate type cold trap for freeze drier - Google Patents
Plate type cold trap for freeze drier Download PDFInfo
- Publication number
- CN2903855Y CN2903855Y CN 200620112135 CN200620112135U CN2903855Y CN 2903855 Y CN2903855 Y CN 2903855Y CN 200620112135 CN200620112135 CN 200620112135 CN 200620112135 U CN200620112135 U CN 200620112135U CN 2903855 Y CN2903855 Y CN 2903855Y
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- trap
- cold
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- mainboard
- runner
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Abstract
A plate type cold trap for freeze drier, is characterized in that: the device comprises a liquid supply main pipe (1), liquid supply transversal collecting boxes (2), cold trap motherboards (4), air return transversal connecting boxes (6) and an air return main pipe (7); Several cold trap motherboards (4) are arranged vertically in parallel with equal gap or arranged in a fanning pattern; the upper end of each cold trap motherboard (4) connects with the liquid supply transversal connecting box (2); the liquid supply transversal connecting box (6) connects with the liquid supply main pipe (1); the lower end of each cold trap motherboard (4) connects with the air return transversal connecting box (6); and the air return transversal connecting box (6) connects with the air return main pipe (7). The present utility model has compact size, low energy consumption, high water-trap efficiency, easy defrosting, low manufacturing cost, which can realize direct-expansion type liquid supply of the cold trap of freeze drier.
Description
Technical field
The utility model relates to the plate type cold trap that vacuum freeze drier (hereinafter to be referred as freeze dryer), particularly freeze dryer are used.
Background technology
Freeze drying technology is earlier water-containing materials to be frozen into below the eutectic temperature, make moisture wherein become ice, under suitable temperature and vacuum, the ice distillation is overflowed from material for steam then, utilize cold-trap that steam is sublimated, thereby obtain the technology of dried product.During freeze dryer work, the vacuum in the freeze-drying storehouse is obtained by vacuum system, and vacuum system mainly is made up of vacuum unit and cold-trap.In dry run, the a large amount of steam that distil out are depended merely on the vacuum unit and can't all be discharged outside the storehouse, the vacuum machine only is used to extract out not condensable gas, for the steam in the gas, must rely on cold-trap that it is all caught extracts out, make steam sublimate into ice (or frost) in its surface, just can keep corresponding vacuum; When vacuum pressure in the freeze-drying storehouse was higher than the steam-laden pressure of material eutectic point correspondence, having frozen material will melt, and dry run is not lyophilization just.Lyophilization must be that the ice in the material is sublimed into steam, sublimate into the process of ice again on the cold-trap surface, there are how many distillation amounts that how much the amount of sublimating just should be arranged, because distillation is identical with the latent heat of sublimating, have only cold-trap to be actually used in to sublimate that cold equals to distil when adding heat, just can keep stable vacuum pressure, cold-trap except should having the required surface area of sublimating, when distillation (also be maximum) required cold when also wanting to provide maximum and sublimating.Therefore, the cold-trap performance directly influences production efficiency of freeze-drying machine, energy consumption and product quality.
What the cold-trap (built-in and built-in outward) of existing freeze dryer adopted mostly is copper pipe, the tubular structure of coating steel pipe or stainless steel tube, be divided into coiled (helix tube, hosepipe) and two kinds of shell and tubes, owing to be subjected to the restriction of cylinder structure and layout, the tubular type cold-trap not only takes up room greatly, long flow path, flow resistance is big, be unfavorable for the evaporation of working medium or the heat exchange of refrigerant, surface temperature is inhomogeneous also to exist a large amount of lee faces, effective heat exchange area is not fully utilized, the steam flow resistance is big, easily produce ice in the windward side stifled, thus the tubular type cold-trap to catch water efficient very low, energy consumption is also big.
A kind of plate type cold trap is arranged on the small-sized freeze dryer, be to embed coil pipe to form in plate material (adopting aluminium), be a kind of tubular type cold-trap of modification in fact, has some deficiency of tubular type cold-trap equally, in addition, be not suitable for large-scale freeze dryer owing to per surface area power is less.
The utility model content
The plate type cold trap that provides freeze dryer to use is provided the purpose of this utility model, to address the above problem.The utility model volume is little, and energy consumption is low, catches water efficient height, easily defrosting, low cost of manufacture, can realize the direct-expansion type feed flow of freeze dryer cold-trap.
The purpose of this utility model is to realize by following technical scheme.The utility model is the plate type cold trap that freeze dryer is used, and it is characterized in that: it comprises feed flow house steward, feed flow cross crosslinking box, cold-trap mainboard, return-air cross crosslinking box and return-air house steward; Some described cold-trap mainboard parallel equidistant are vertically arranged or fan-shaped vertical arrangement, and the upper end of every described cold-trap mainboard all is connected with the feed flow cross crosslinking box; Described feed flow cross crosslinking box also links to each other with described feed flow house steward; The lower end of every described cold-trap mainboard all is connected with described return-air cross crosslinking box, and described return-air cross crosslinking box links to each other with the return-air house steward.Have some parallel uniform horizontal run in the described cold-trap mainboard, there is the soldering and sealing of mainboard strip of paper used for sealing at two ends; Top layer feed liquor runner communicates with the feed flow cross crosslinking box by inlet; Bottom return-air runner communicates with the return-air cross crosslinking box.Described cold-trap mainboard top layer feed liquor runner and bottom return-air runner one end all have runner commutation groove; The two ends of other each intermediate layer runner also have runner commutation groove, so that working medium back and forth flows.
Described runner commutation groove is individual layer commutation groove or multilayer commutation groove.
Outer surface at the cold-trap mainboard has the waveform tooth.
Whole described parts are all made of aluminium alloy.
The junction of described each part all connects with welding.
During cold-trap work, liquid working substance from refrigeration system enters the feed flow cross crosslinking box through the feed flow house steward, each runner that enters into the cold-trap mainboard through inlet back and forth flows again, the inner surface of working medium by the cold-trap mainboard absorbs the heat that outer surface transmits (steam sublimate latent heat) and flashes to gas or carry out heat exchange, flow back to refrigeration system by return-air cross crosslinking box, return-air house steward again, finish the process that a cold-trap provides steam to sublimate institute's chilling requirement.
The utility model is board-like aluminium alloy cold-trap, and cold-trap mainboard and each header all adopt the aluminum alloy materials welding to make, the thermal conductivity factor height, and energy consumption is low; Have some reciprocal passages in each cold-trap mainboard, working medium is shunted in cold-trap evenly, each condenser temperature is even, helps the evaporation of working medium or the heat exchange of refrigerant; Under the situation of identical evaporation or heat exchange surface, it is big that this cold-trap passes cold, and the heat exchange efficiency height can be realized the gravity force liquid-supply of ammonia working medium, and the evaporation of fluorine working medium direct-expansion type can be simplified refrigeration system, reduce equipment investment; When adopting pump forced circulation feed flow, can reduce the power of pump.Cold-trap mainboard outer surface also can be with the ripple tooth, has not only increased heat transfer area, and can promote the disturbance of heat transfer medium, improves heat exchange efficiency; No lee face helps steam and evenly sublimates at the cold-trap outer surface, and effective heat exchange area is fully used; Catching under the identical situation of water area of cold-trap, can reduce the volume that takies in dry and cold trap storehouse, reduce the freeze dryer manufacturing cost; The minimizing of warehouse also can be shortened the pre-evacuated time behind the material warehouse entry, avoids the material thawing of rising again, and guarantees the freeze-dried products quality, also can reduce the vacuum unit capacity of finding time, and reduces the investment of vacuum unit, reduces operating cost; Vertical cold-trap plate is when defrosting, and ice sheet easily comes off en bloc, can shorten defrosting time.
The feed flow house steward of this cold-trap, feed flow cross crosslinking box, return-air cross crosslinking box, return-air house steward can have different relative positions, and working medium or refrigerant go out under can be enterprising, go out on also can advancing down; Can be with the use in parallel of some groups of cold-traps.
In sum, the utility model volume is little, and energy consumption is low, catches water efficient height, easily defrosting, low cost of manufacture, can realize the direct-expansion type feed flow of freeze dryer cold-trap.
Description of drawings
Fig. 1 is the front view of the utility model cold-trap;
Fig. 2 is the left view among Fig. 1;
Fig. 3 is the A-A profile among Fig. 1;
Fig. 4 is that A among Fig. 1 is to partial enlarged drawing.
Code name explanation among the figure
1 feed flow house steward, 2 feed flow cross crosslinking box, 3 inlets, 3 ' feed liquor runner, 4 cold-trap mainboards
4 ' ripple tooth, 5 mainboard strip of paper used for sealings, 6 return-air cross crosslinking box, 7 return-air house stewards
8 mainboard runners, 9 runners commutation groove, 10 return-air runners, 11,12 sprues
The specific embodiment
As Fig. 1,2 is schematic diagram of the present utility model, and it comprises feed flow house steward 1, feed flow cross crosslinking box 2, cold-trap mainboard 4, mainboard strip of paper used for sealing 5, return-air cross crosslinking box 6 and return-air house steward 7; Some described cold-trap mainboard 4 parallel equidistant are vertically arranged or fan-shaped vertical arrangement, and this programme is that parallel equidistant is vertically arranged, and the upper end of every described cold-trap mainboard 4 all is connected with feed flow cross crosslinking box 2; Described feed flow cross crosslinking box 2 also links to each other with described feed flow house steward 1; The lower end of every described cold-trap mainboard 4 all is connected with described return-air cross crosslinking box 6, and described return-air cross crosslinking box 6 also links to each other with return-air house steward 7; In described each part runner is arranged all, the junction of each part communicates, and sprue 11,12 soldering and sealing are used at the two ends of feed flow cross crosslinking box 2 and return-air cross crosslinking box 6 respectively.
Some parallel uniform horizontal run 8 are arranged in the cold-trap mainboard 4, and there are 5 soldering and sealing of mainboard strip of paper used for sealing at two ends; Top layer feed liquor runner 3 ' communicate with feed flow cross crosslinking box 2 by inlet 3; Bottom return-air runner 10 communicates with return-air cross crosslinking box 6; Top layer feed liquor runner 3 and bottom return-air runner 10 1 ends have runner commutation groove 9 (with reference to Fig. 4); The two ends of other each intermediate layer runner 8 all have runner commutation groove 9, can be individual layer commutation groove, also can be multilayer commutation groove, so that working medium back and forth flows.
As Fig. 3, has waveform tooth 4 ' conduct heat strengthening at the outer surface of cold-trap mainboard 4.
Cold-trap mainboard 4 can adopt whole or splicing, and cold-trap mainboard 4 as shown in Figure 1 is 3 splicings.
Whole described parts are all made of aluminium alloy, and the junction of each part all connects with welding, and makes it firm, the heat transfer efficiency height.
In cold-trap when work, enter feed flow cross crosslinking box 2 from the liquid working substance of refrigeration system through feed flow house steward 1, and be in each runner 8 of inlet 3, feed liquor runner 3 ' each trap mainboard 4 of inflows, back and forth mobile through commutation groove 9 again; The inner surface of working medium by cold-trap mainboard 4 absorbs the heat that outer surface transmits (steam sublimate latent heat) and flashes to gas or carry out heat exchange, cooled via return air runner 10, return-air cross crosslinking box 6 and return-air house steward 7 get back to refrigeration system again, finish the process that a cold-trap provides steam to sublimate institute's chilling requirement.
Claims (7)
1. the plate type cold trap used of freeze dryer, it is characterized in that: it comprises feed flow house steward (1), feed flow cross crosslinking box (2), cold-trap mainboard (4), return-air cross crosslinking box (6) and return-air house steward (7); Some described cold-trap mainboards (4) parallel equidistant is vertically arranged or fan-shaped vertical arrangement, and the upper end of every described cold-trap mainboard (4) all is connected with feed flow cross crosslinking box (2); Described feed flow cross crosslinking box (2) also links to each other with described feed flow house steward (1); The lower end of every described cold-trap mainboard (4) all is connected with described return-air cross crosslinking box (6), and described return-air cross crosslinking box (6) links to each other with return-air house steward (7).
2. the plate type cold trap of using according to the described freeze dryer of claim 1, it is characterized in that: have some parallel uniform horizontal run (8) in the described cold-trap mainboard (4), there is mainboard strip of paper used for sealing (5) soldering and sealing at two ends; Top layer feed liquor runner (3 ') communicates with feed flow cross crosslinking box (2) by inlet (3); Bottom return-air runner (10) communicates with return-air cross crosslinking box (6).
3. the plate type cold trap of using according to the described freeze dryer of claim 1 is characterized in that: described cold-trap mainboard (4) top layer feed liquor runner (3) and bottom return-air runner (10) one ends all have runner commutation groove (9); The two ends of other each intermediate layer runner (8) also have runner commutation groove (9).
4. the plate type cold trap of using according to the described freeze dryer of claim 3 is characterized in that: described runner commutation groove (9) is individual layer commutation groove or the multilayer groove that commutates.
5. the plate type cold trap of using according to the described freeze dryer of claim 1, it is characterized in that: the outer surface at cold-trap mainboard (4) has waveform tooth (4 ').
6. the plate type cold trap of using according to the described arbitrary freeze dryer of claim 1 to 5, it is characterized in that: whole described parts are all made of aluminium alloy.
7. the plate type cold trap of using according to the described arbitrary freeze dryer of claim 1 to 5, it is characterized in that: the junction of described each part all connects with welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620112135 CN2903855Y (en) | 2006-04-21 | 2006-04-21 | Plate type cold trap for freeze drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620112135 CN2903855Y (en) | 2006-04-21 | 2006-04-21 | Plate type cold trap for freeze drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903855Y true CN2903855Y (en) | 2007-05-23 |
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ID=38079270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620112135 Expired - Lifetime CN2903855Y (en) | 2006-04-21 | 2006-04-21 | Plate type cold trap for freeze drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903855Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090600A (en) * | 2013-01-28 | 2013-05-08 | 东莞市科美斯制冷设备有限公司 | Deli vacuum pre-cooler twin-stage water catcher and water catching method |
| CN103920303A (en) * | 2014-04-22 | 2014-07-16 | 中国科学院长春应用化学研究所 | Airflow heating defrosting method for cold trap |
-
2006
- 2006-04-21 CN CN 200620112135 patent/CN2903855Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090600A (en) * | 2013-01-28 | 2013-05-08 | 东莞市科美斯制冷设备有限公司 | Deli vacuum pre-cooler twin-stage water catcher and water catching method |
| CN103090600B (en) * | 2013-01-28 | 2015-12-23 | 东莞市科美斯制冷设备有限公司 | Delicatessen vacuum precooling machine twin-stage water vessel and catch water method |
| CN103920303A (en) * | 2014-04-22 | 2014-07-16 | 中国科学院长春应用化学研究所 | Airflow heating defrosting method for cold trap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070523 |
|
| EXPY | Termination of patent right or utility model |