CN201628466U - Brazing sheet layer structure of freeze dryer - Google Patents
Brazing sheet layer structure of freeze dryer Download PDFInfo
- Publication number
- CN201628466U CN201628466U CN2010201324518U CN201020132451U CN201628466U CN 201628466 U CN201628466 U CN 201628466U CN 2010201324518 U CN2010201324518 U CN 2010201324518U CN 201020132451 U CN201020132451 U CN 201020132451U CN 201628466 U CN201628466 U CN 201628466U
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- Prior art keywords
- sheet layer
- freeze dryer
- flaggy
- freeze
- square steel
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Abstract
The utility model relates to a brazing sheet layer structure of a freeze dryer, which is characterized by comprising a square frame formed by a left square steel and a right square steel as well as a front square steel and a rear square steel; both the upper side and the lower side of the square frame are provided with panels; ribs are arranged between the panels in a staggered way; the ribs are connected with the panels by brazing filler metal; and the ribs are made of I-shaped steel. The traditional sheet layer design that solid square steel is adopted as ribs is eliminated, and the I-shaped steel is adopted, therefore, not only the using quantity of the material is greatly reduced, and the cost is also reduced; but also the heat transferring efficiency of refrigerant in the sheet layer is improved, the uniformity of the temperature of the sheet layer is enhanced, and the whole performance of the freeze dryer is remarkably improved.
Description
Technical field
The utility model relates to a kind of brazing sheet layer structure of freeze dryer, and particularly the vacuum freeze drier brazing sheet layer structure belongs to the vacuum freeze drier technical field.
Background technology
The freeze dryer flaggy is positioned at freeze drying box, and its function is to place freeze-drying prods (for example biologics or the bottle of biologics is housed) to carry out freeze-drying.Flaggy is positioned in the vertical liftable mechanism and is used for bottle is carried out tamponade.
Another function of flaggy is to carry out the heat exchange of refrigerant (ethylene glycol, alcohol, silicone oil etc.) and freeze-drying prods.In the pre-freeze process, the moisture content in the freeze-drying prods is at first frozen.After pre-freeze was finished, freeze drying box was evacuated the moisture content that makes in the freeze-drying prods and is elevated.In order to finish this process, an external refrigeration system is used to provide cold to refrigerant and freeze-drying prods.The heat that provides sublimation process required is provided for electric heater.
Because freeze-drying process occurs in the vacuum environment, the heat transmission that therefore occurs between freeze-drying prods and the refrigerant is the heat conduction.The flaggy surface should smoothly as much as possible make heat conduction reduction as far as possible between flaggy and the freeze-drying prods.Excellent contact can improve the thermal conduction effect of freeze-drying prods and flaggy and refrigerant.
Tradition freeze dryer flaggy is made up of two panels, ribs up and down and the protection structure all around that is used to seal.Solid rib is arranged in and is used to form the passage that refrigerant flows between two panels.The type that combines with flaggy of rib has two kinds in general: one type is the hook weldering, is exactly that rib is designed to the snap close form and is welded on respectively on two panels.Another kind of type is plug welding, is exactly that rib at first is welded on the panel, and in the boring plug welding of the position of the corresponding rib of another panel, the crator that exceeds is by grinding and buffing then.
The shortcoming of above-mentioned two kinds of layer structures is can cause having thermal stress near pad, and welding deformation amount is bigger.In order to reduce this thermal stress, need to use thicker panel and solid rib.This makes flaggy have very big thermal mass, thereby wastes lot of energy in pre-freeze or lyophilization process.Simultaneously in order to reduce the influence that welding deformation amount causes the flaggy flatness greatly, so finish in the flaggy welding, must carry out preliminary shaping, the flaggy whole processing of Mechanical Processing Center on the whole then, two panels up and down to flaggy carry out machined, the cutting output of each face about about 1mm, has so not only been wasted material greatly, has more increased the cycle that flaggy is made.No matter be hook weldering or plug welding, all be to belong to manual welding, welding quality depends on directly whether the height of welder's level and working attitude be conscientious, and the flaggy quality of stability is poor.
Summary of the invention
The purpose of this utility model provides a kind of brazing sheet layer structure of freeze dryer that has higher stability and save the flaggy of material.Soldering is a kind of metal fever method of attachment.Vacuum brazing is meant and under vacuum protection atmosphere temperature risen to the solder fusion temperature, utilize liquid phase solidify and and mother metal between diffusion realize intermetallic connection.In order to achieve the above object, the technical solution of the utility model provides a kind of brazing sheet layer structure of freeze dryer, it is characterized in that, comprise the square box of forming by left and right sides square steel and front and back square steel, the both sides up and down of described square box all are provided with panel, be provided with staggered rib between the panel, be connected by solder between rib and the panel, described rib is an i shaped steel.
The utility model has been abandoned the design that traditional flaggy design rib adopts solid square steel, adopts i shaped steel, not only greatly reduces the consumption of material, reduces cost; Improved the heat transfer efficiency of the inner refrigerant of flaggy especially, improved the uniformity of flaggy temperature, tangible help arranged for the raising of freeze dryer overall performance.
Description of drawings
Fig. 1 is the brazing sheet layer structure of freeze dryer schematic diagram;
Fig. 2 is an A-A profile among Fig. 1.
The specific embodiment
Specify the utility model below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be the brazing sheet layer structure of freeze dryer schematic diagram, described brazing sheet layer structure of freeze dryer comprises the square box of being made up of left and right sides square steel 1 and front and back square steel 2, as shown in Figure 2, be A-A profile among Fig. 1, the both sides up and down of described square box all are provided with panel 5, are provided with staggered rib 3 between the panel 5, are connected by solder 4 between rib 3 and the panel 5.Described rib 3 adopts i shaped steel, not only greatly reduces the consumption of material, reduces cost; Improved the heat transfer efficiency of the inner refrigerant of flaggy especially, improved the uniformity of flaggy temperature, tangible help arranged for the raising of freeze dryer overall performance.Described solder 4 can be the Ni-based weld tabs of BNI2 type that Shanghai big magnificent novel brazing material factory produces.
During making, solder 4 is placed between panel 5 and the rib 3, again the assembly of this sandwich style is placed in the middle of the anchor clamps.Put it into then in the vacuum drying oven, the temperature in the stove rises to the melting temperature of solder 4 rapidly, is incubated certain hour under this temperature, and then the temperature in the stove naturally cools to about 400 ℃.Assembly quenches by air inlet and is cooled fast to room temperature.Utilize solid rib will weld sealing all around at last.
Compare with original traditional flaggy welding method, vacuum brazing has the advantage of highly significant, and the concrete table of comparisons is as follows:
| Parameter and explanation | Vacuum brazing | Manual welding (hook weldering, plug welding) |
| Distortion | In brazing process, parent metal does not melt, so can guarantee the original shape of part after the soldering | Welding produces a large amount of heats, and bulk deformation is big |
| Parent metal | The matrix heating-up temperature is lower, parent metal | The heating-up temperature of matrix is higher, so matrix |
| Physical and chemical performance | Physical and chemical performance does not make a difference or influences very little | The physical and chemical performance of metal makes a difference |
| Heat treatment | Vacuum brazing and anneal of material, quenching technical can carry out simultaneously | Heat treatment must be carried out separately |
| Parameter and explanation | Vacuum brazing | Manual welding (hook weldering, plug welding) |
| Cost | Because full weld is adopted in vacuum brazing, the intensity height, the flaggy upper and lower panel can adopt 3mm | Tradition flaggy design upper and lower panel thickness is selected 4-8mm for use according to the size of flaggy area usually, and materials increase greatly |
| Refrigerant (silicone oil) consumption | Because the hypotelorism between the upper and lower panel, refrigerant (silicone oil) saves about 20% | The upper and lower panel spacing is big, and refrigerant (silicone oil) expense is big |
| The flaggy temperature homogeneity | ±0.5℃ | ±1℃ |
| Heat conduction efficiency | High | Low |
| The flaggy flatness | ±0.3mm/m | ±0.5mm/m |
Claims (1)
1. brazing sheet layer structure of freeze dryer, it is characterized in that, comprise the square box of forming by left and right sides square steel (1) and front and back square steel (2), the both sides up and down of described square box all are provided with panel (5), be provided with staggered rib (3) between the panel (5), be connected by solder (4) between rib (3) and the panel (5), described rib (3) is an i shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201324518U CN201628466U (en) | 2010-03-16 | 2010-03-16 | Brazing sheet layer structure of freeze dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201324518U CN201628466U (en) | 2010-03-16 | 2010-03-16 | Brazing sheet layer structure of freeze dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201628466U true CN201628466U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201324518U Expired - Lifetime CN201628466U (en) | 2010-03-16 | 2010-03-16 | Brazing sheet layer structure of freeze dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201628466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839621A (en) * | 2010-03-16 | 2010-09-22 | 上海东富龙制药设备制造有限公司 | Brazing sheet layer structure of freeze dryer |
| CN109813056A (en) * | 2019-03-06 | 2019-05-28 | 刘义 | Vacuum freeze drier plate layer and preparation method thereof |
-
2010
- 2010-03-16 CN CN2010201324518U patent/CN201628466U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839621A (en) * | 2010-03-16 | 2010-09-22 | 上海东富龙制药设备制造有限公司 | Brazing sheet layer structure of freeze dryer |
| CN109813056A (en) * | 2019-03-06 | 2019-05-28 | 刘义 | Vacuum freeze drier plate layer and preparation method thereof |
| CN109813056B (en) * | 2019-03-06 | 2024-03-29 | 刘义 | Plate layer for vacuum freeze dryer and preparation method thereof |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |