CN201653079U - Refrigeration system for front box of freeze dryer - Google Patents
Refrigeration system for front box of freeze dryer Download PDFInfo
- Publication number
- CN201653079U CN201653079U CN 201020173532 CN201020173532U CN201653079U CN 201653079 U CN201653079 U CN 201653079U CN 201020173532 CN201020173532 CN 201020173532 CN 201020173532 U CN201020173532 U CN 201020173532U CN 201653079 U CN201653079 U CN 201653079U
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- CN
- China
- Prior art keywords
- circulating pump
- flaggy
- parting bead
- lower panel
- freeze dryer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 19
- 239000010935 stainless steel Substances 0.000 claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 14
- 239000011324 bead Substances 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 11
- 238000005192 partition Methods 0.000 abstract 7
- 238000000034 method Methods 0.000 description 19
- 229920002545 silicone oil Polymers 0.000 description 9
- 238000004108 freeze drying Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a refrigeration system for a front box of a freeze dryer, comprising a front box, wherein a plate layer is arranged in the front box and comprises an upper panel and a lower panel; an outer frame strip and partition strips are arranged between the upper panel and the lower panel, wherein the partition strips are arranged in a staggered way; adjacent partition strips are mutually communicated and the partition strips and areas between the partition strips and the outer frame strip are mutually communicated to form a refrigerant channel; one end of the refrigerant channel is connected with a circulating pump through a connecting pipe; the circulating pump is connected with an electric heater; and at least one stainless steel spring is respectively arranged between the adjacent partition strips and between the partition strips and the outer frame strip and is fixed on the lower panel through welding points. The utility model has the advantage of higher uniformity of plate layer temperature.
Description
Technical field,
The utility model relates to the preceding case refrigeration system of a kind of freeze dryer, belongs to the vacuum freeze drier technical field.
Background technology
The preceding case refrigeration system of existing freeze dryer generally is made up of flaggy, circulating pump, electrical heating and refrigeration system, and wherein circulating pump is by two identical pumps, plays mutual backup effect, and flaggy adopts existing three kinds of flaggies (concrete processing method and content see below).This method can be controlled at the temperature deviation of flaggy ± 0.5 degree about, but can not meet the demands to the demanding pharmaceutical factory of flaggy temperature homogeneity for some.
Flaggy is positioned at the freeze drying box of freeze dryer, and it has two effects: one is to place freeze-drying prods in bulk or bottled, and another is to be that alcohol, ethylene glycol and silicone oil carry out heat and conducts to product and refrigerant, thus freeze-drying prods.
The freeze dryer flaggy is made up of two panels and some parting beads usually, and panel and parting bead form the runner of refrigerant, and the height of this runner is approximately 10～20mm usually, and the head and the tail welded seal is carried out with parting bead in four limits of flaggy.
The method of processing flaggy has three kinds at present, first method is a plugging technique, the operation of this processing method is as follows: at first with parting bead below plate fix and weld, holed in the position of top panel and parting bead correspondence then, top panel is placed on carries out plug welding on the parting bead, the crator that plug welding forms is by grinding and buffing.Make and to bring two problems in this way.One is to form thermal stress at the position of welding.In order to reduce the distortion of panel pad, can use thicker panel and solid parting bead usually, flaggy will form bigger thermal inertia like this, thereby causes energy dissipation in freeze-drying process, and another problem is the leakage that plug welding may cause refrigerant.
The method of second kind of processing flaggy is the chimeric method of parting bead, be about to parting bead make two of C shapes can chimeric mutually parting bead, be welded on the upper and lower panel respectively, upper and lower panel is entrenched in together then, equally, the flaggy of this method also has bigger thermal inertia, and mutual chimeric method has increased flaggy and labour's expense, the flaggy that this kind method is made is inner stressed relatively poor, is not suitable for the making of large-scale size flaggy.
The third method is described in United States Patent (USP), and the patent No. is the method for the vacuum brazing in 5519946.In the method, the ambrose alloy welding rod is placed between lower panel and parting bead and top panel and the parting bead, and the assembly of this sandwich style is placed in the middle of two graphite felt.Put it into then in the vacuum drying oven, the temperature in the stove rises to the fusing point and the stainless crystallization temperature of ambrose alloy welding rod rapidly, under this temperature flaggy is carried out stress and eliminates, and then the temperature in the stove is cooled to about 200 degree rapidly.Assembly quenches and cool to room temperature by air inlet.Utilize solid parting bead will weld sealing all around at last.Because vacuum brazing is adopted in welding, therefore can be made into hollow form in order to reduce the thermal inertia parting bead.The shortcoming of this method is that initial input is very high, and flaggy
Size also can be restricted.
More than three kinds processing flaggies methods application is all arranged in the manufacture process of freeze dryer flaggy at present, but above three kinds of methods all have a common shortcoming, promptly because the flaggy panel inner surface is that smooth flat causes the heat exchange of inner refrigerant and panel very poor, thereby influence the pre-freeze and the drying efficiency of freeze-drying prods, and the temperature homogeneity of flaggy is relatively poor.
Summary of the invention
The purpose of this utility model provides a kind of preceding case refrigeration system of freeze dryer with higher flaggy temperature homogeneity.
In order to achieve the above object, the technical solution of the utility model provides the preceding case refrigeration system of a kind of freeze dryer, comprise preceding case, be provided with flaggy in the preceding case, flaggy comprises top panel and lower panel, the parting bead that is provided with outer moulding and is interspersed between top panel and the lower panel, between the adjacent parting bead and the zone between parting bead and the outer moulding formation refrigerant passage that is interconnected, one end of refrigerant passage connects circulating pump by a tube connector, circulating pump connects electric heater, electric heater connects plate type heat exchanger, plate type heat exchanger connects the other end of refrigerant passage via another tube connector, it is characterized in that all be provided with at least one stainless steel spring between the adjacent parting bead and between parting bead and the outer moulding, stainless steel spring is fixed on the lower panel by solder joint.
Further, described circulating pump is first circulating pump and second circulating pump in parallel, and the flow of flow-rate ratio second circulating pump of first circulating pump is big.
The utility model is on the basis of original flaggy, in the space of parting bead and upper and lower panel formation, add and have the stainless steel spring of strengthening the flow-disturbing effect, compare with original layer structure, the advantage of adding the stainless steel spring flaggy is disturbance and the mixing that has strengthened refrigerant in the flaggy, thereby strengthened the heat exchange of refrigerant and flaggy, the pre-freeze and the drying time of freeze-drying prods have been reduced, and the function of stainless steel spring hybrid perturbation has also improved the uniformity of flaggy Temperature Distribution, the freeze-drying effect that makes a collection of freeze-drying prods is near consistent, and the product quality repeatability is stronger.In addition, adopt two circulating pumps that vary in size in this device, increase the internal circulating load of silicone oil, reduce heat transfer temperature difference, improve the uniformity of flaggy.The utility model has also that manufacturing process is simple, cost is little, practical advantage.
Description of drawings
Fig. 1 is the layer structure schematic diagram;
Fig. 2 is the flaggy schematic cross-section;
Fig. 3 is a case refrigerant system configurations schematic diagram before the freeze dryer.
The specific embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 3, be case refrigerant system configurations schematic diagram before the freeze dryer, the case refrigeration system is made up of preceding case 8, first circulating pump 11, second circulating pump 12, electric heater 13 and plate type heat exchanger 14 before the described freeze dryer.
Be provided with flaggy 9 in the preceding case 8, as shown in Figure 1, be the layer structure schematic diagram, Fig. 2 is its schematic cross-section.Described flaggy 9 comprises top panel 6 and lower panel 7, the parting bead 4 that is provided with outer moulding 1 and is interspersed between top panel 6 and the lower panel 7, between the adjacent the parting bead 4 and zone between parting bead 4 and the outer moulding 1 is interconnected and forms refrigerant passage 16, one end of refrigerant passage 16 connects first circulating pump 11 in parallel and an end of second circulating pump 12 by a tube connector 2, first circulating pump 11 in parallel and the other end of second circulating pump 12 are connected electric heater 13, electric heater 13 connects plate type heat exchanger 14, plate type heat exchanger 14 connects the other end of refrigerant passage 16 via another tube connector 2, all be provided with at least one stainless steel spring 3 between the adjacent parting bead 4 and between parting bead 4 and the outer moulding 1, stainless steel spring 3 is fixed on the lower panel 7 by solder joint 5.
The preparation method of flaggy 9 is as follows: will lie on the platform after lower panel 7 line, parting bead 4 is placed on the lower panel 7 position to the layout line, with portal frame and jack with parting bead 4, lower panel 7 and platform compress, with parting bead 4 spot-welded on below on the plate 7, then outer moulding 1 is welded on the lower panel 7, the position of stainless steel spring 3 according to solder joint 5 is weldingly fixed on the lower panel 7 of per two parting beads 4, then the mode of top panel 6 punchings by plug welding is welded on the parting bead 4, at last top panel 6 and the sealing of lower panel 7 four edges are welded, tube connector 2 is installed on both sides.The quantity of stainless steel spring 3 can be adjusted according to the distance of 1 of adjacent parting bead 4 and parting bead 4 and outer moulding, and stainless steel spring preferably is arranged between adjacent parting bead 4 and parting bead 4 and the outer moulding 1 uniformly.
More than,, can carry out, just in process, need to add the welding sequence of stainless steel spring 3 and lower panel 7 according to the operation of chimeric assembling if the processing mode of flaggy is the chimeric assembling of parting bead for the processing mode by the flaggy plug welding carries out the example explanation.
During use, in preceding case 8, silicone oil carries out heat exchange by flaggy 9 with medicine then by flaggy 9 is carried out heat exchange.And the silicone oil circulation process is as follows in flaggy 9: the silicone oil that flows out from flaggy 9 increases kinetic energy by first circulating pump 11 or second circulating pump 12, and flow through then electric heater 13 and plate type heat exchanger 14 are got back to flaggy 9 inside at last, carry out heat exchange.Electrical heating 13 provides thermal source and low-temperature receiver with plate type heat exchanger 14 for system.Silicone oil inlet ductwork at flaggy 9 is provided with inlet temperature measurement mechanism 15, at the silicone oil export pipeline outlet temperature measuring equipment 10 is set, during operation, the control inlet temperature is that freeze dryer is set theoretical temperatures, and inlet temperature and flaggy 9 temperature are high more near temperature-controlled precision more.
In this freeze dryer, the spring of flaggy 9 inside can increase the disturbance of silicone oil in flaggy 9, enhanced heat exchange, but can increase the resistance that fluid flows.Therefore, can when flaggy 9 is lowered the temperature, drive little second circulating pump 12 according to actual conditions, can reduce the resistance that fluid flows this moment, reduces heat loss; And, when needing higher temperature-controlled precision, close second circulating pump 12 in the constant temperature stage, open first circulating pump 11 simultaneously,, increase the internal circulating load of silicone oil because the flow of flow-rate ratio second circulating pump 12 of first circulating pump 11 is big, reduce heat transfer temperature difference, improve the uniformity of flaggy 9.And when any one circulating pump goes wrong, can open another pump operation, ensure drug quality.
Claims (2)
1. case refrigeration system before the freeze dryer, comprise preceding case (8), be provided with flaggy (9) in the preceding case (8), flaggy (9) comprises top panel (6) and lower panel (7), the parting bead (4) that is provided with outer moulding (1) and is interspersed between top panel (6) and the lower panel (7), between the adjacent parting bead (4) and the zone between parting bead (4) and the outer moulding (1) is interconnected and forms refrigerant passage (16), one end of refrigerant passage (16) connects circulating pump by a tube connector (2), circulating pump connects electric heater (13), electric heater (13) connects plate type heat exchanger (14), plate type heat exchanger (14) connects the other end of refrigerant passage (16) via another tube connector (2), it is characterized in that, all be provided with at least one stainless steel spring (3) between the adjacent parting bead (4) and between parting bead (4) and the outer moulding (1), stainless steel spring (3) is fixed on the lower panel (7) by solder joint (5).
2. case refrigeration system before the freeze dryer as claimed in claim 1 is characterized in that, described circulating pump is first circulating pump (11) and second circulating pump (12) in parallel, and the flow of flow-rate ratio second circulating pump (12) of first circulating pump (11) is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020173532 CN201653079U (en) | 2010-04-27 | 2010-04-27 | Refrigeration system for front box of freeze dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020173532 CN201653079U (en) | 2010-04-27 | 2010-04-27 | Refrigeration system for front box of freeze dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653079U true CN201653079U (en) | 2010-11-24 |
Family
ID=43118320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020173532 Expired - Fee Related CN201653079U (en) | 2010-04-27 | 2010-04-27 | Refrigeration system for front box of freeze dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043020A (en) * | 2015-07-07 | 2015-11-11 | 苏州赛弗尔机械有限公司 | Temperature control type freeze dryer |
| CN109140909A (en) * | 2018-08-16 | 2019-01-04 | 楚天科技股份有限公司 | Freeze dryer plate layer temprature control method and system |
-
2010
- 2010-04-27 CN CN 201020173532 patent/CN201653079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043020A (en) * | 2015-07-07 | 2015-11-11 | 苏州赛弗尔机械有限公司 | Temperature control type freeze dryer |
| CN109140909A (en) * | 2018-08-16 | 2019-01-04 | 楚天科技股份有限公司 | Freeze dryer plate layer temprature control method and system |
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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: 20101124 Termination date: 20180427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |