CN100376880C - Temperature-sensing mattress system for verifying shelf temperature distribution evenness of freeze drier - Google Patents
Temperature-sensing mattress system for verifying shelf temperature distribution evenness of freeze drier Download PDFInfo
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- CN100376880C CN100376880C CNB2006100496816A CN200610049681A CN100376880C CN 100376880 C CN100376880 C CN 100376880C CN B2006100496816 A CNB2006100496816 A CN B2006100496816A CN 200610049681 A CN200610049681 A CN 200610049681A CN 100376880 C CN100376880 C CN 100376880C
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Abstract
The present invention discloses a temperature measurement pad system for verifying the temperature distribution uniformity of a freeze dryer shelf. The present invention is provided with a temperature measurement pad which is provided with a polytetrafluoroethene layer and upper and lower thin spongy layers, the interlayer is bonded tightly by epoxy resin, small holes are paved uniformly on the temperature measurement pad, copper constantan thermocouples penetrate through the small holes, temperature measurement ends of the copper constantan thermocouples are arranged on the lower side of the thin spongy layer, and each temperature measurement end of each thermocouple is provided with a small magnet; the copper constantan thermocouples are output uniformly through outlets of both sides of the temperature measurement pad, then are connected with an aviation insert of a vacuum box of the freeze dryer through connecting lines, and the copper constantan thermocouples pass through the aviation insert and are connected with the connecting lines and a junction box in sequence. The present invention is suggested according to the disadvantages of verifying the temperature distribution uniformity of the existing shelf needing to dismount complicatedly the thermocouples inconveniently, being adverse to uniformly measuring temperature, repeated reproducing, etc. The temperature measurement pad system has the advantages of easily available materials, easy processing and manufacture, convenience, practicality, low cost and reliable use. The temperature measurement pad system has widespread applicability for the verification measurement of temperature uniformity.
Description
Technical field
The present invention relates to a kind of temperature-sensing mattress system of verifying shelf temperature distribution evenness of freeze drier.Carry out temperature survey by the method that thermopair is evenly arranged on the thermometric pad, cooperate the use of temperature acquisition system, realize the robotization of multi-point temp distribution measuring.
Background technology
Along with the widespread use of Freeze Drying Technique in national economy various fields such as bio-pharmaceuticals, food, preparation of specimen, geology investigations, the production of freeze dryer and market thereof also enlarge day by day perfect.
The maximum tolerance value defined of all each point temperature is the unevenness that shelf temperature allows on the synchronization shelf surface, generally desirable ± 1 ℃.It is the concentrated expression of factors such as rationality of design of size, each arm and collector interface in homogeneity, the collector cross section of flow of solution resistance in the flow, each shelf of solution pump.Because the temperature of shelf (or goods) is subjected to the temperature of shelf temperature highest point to limit (part of freezing that must not melt goods) in the freeze-drying process, the length of lyophilization cycle then is that the required lyophilization cycle with the shelf temperature lowest part is reference frame (finishing to guarantee the equal drying of all goods), therefore, the unevenness of shelf temperature is big more, its sublimation temperature is low more, the distillation required time is long more, and production efficiency is also low more.Secondly, shelf temperature is inhomogeneous, places the rate of drying of the goods that do not exist together on the shelf and the amount of moisture of being removed not to wait, and can cause the residual moisture content difference of goods big, and the quality of finished product is low, allows the storage life short.Therefore, the homogeneity of shelf temperature is to differentiate an important indicator of freeze dryer quality.
At present, common freeze dryer producer adopts to select representative shelf in the upper, middle, and lower part of shelf group and carry out the temperature homogeneity checking.Arrange respectively that at front, rear, left and right, the middle position of tested shelf thermopair carries out temperature survey.For the homogeneity of verifying that shelf temperature distributes, this just need arrange abundant thermocouple temperature measurement probe on the shelf.Therefore, installing to remove to pop one's head in after probe and checking are finished just becomes a complicated sex work that takes time and effort, and the measurement of each piece shelf of each freeze dryer is all needed this operation of repetition, brings great inconvenience to work.Secondly, can introduce artifact to a certain extent when arranging each thermocouple temperature measurement probe, cause all even inadequately contact in position of layout good inadequately etc. easily, cause error, influence the checking of temperature distribution evenness.
Summary of the invention
The objective of the invention is provides a kind of temperature-sensing mattress system of verifying shelf temperature distribution evenness of freeze drier in order to overcome the deficiency that present shelf temperature distribution evenness of freeze drier verification method exists.
The temperature-sensing mattress system of verifying shelf temperature distribution evenness of freeze drier has the thermometric pad, the thermometric spacer has polytetrafluoroethylene floor, thin spongy layer upper and lower two-layer, interlayer epoxy resin close adhesion, evenly be densely covered with aperture on the thermometric pad, and be installed with copper-constantan thermocouple, copper-constantan thermocouple thermometric end is arranged in below the thin spongy layer, each thermocouple temperature measurement end is equipped with a small magnet, the copper-constantan thermocouple unification is drawn through the line outlet of thermometric pad, and insert by the aviation of connection line and freeze dryer vacuum tank and to link to each other, aviation is slotting joins with connecting line, terminal box successively.
The invention has the beneficial effects as follows: this system need not to transform the items of equipment system of freeze dryer on the one hand, it is individual independently temp measuring system, a series of difficulties that complicated layout thermopair is brought when having avoided on the one hand existing freeze dryer shelf uniformity testing have stronger practicality.Collapsible thermometric pad is easy to use, and manufacturing materials is easy to get, and processing is simple, and cost is low, and working stability reliably and to the temperature homogeneity confirmatory measurement has general applicability.
The present invention can promote the use of in the freeze dryer of different sizes and different purposes, also can promote the use of the measurement of other plate body Temperature Distribution.For the big freeze dryer of shelf size, can make the thermometric pad of corresponding size dimension, also can measure by a plurality of relative small size thermometric pads in close on the shelf shop.
Description of drawings
Fig. 1 is the temperature-sensing mattress system structural representation of verifying shelf temperature distribution evenness of freeze drier.
Fig. 2 is a thermometric pad sectional view of the present invention;
Fig. 3 is a thermometric pad thermopair wiring diagram of the present invention;
Fig. 4 is a terminal box synoptic diagram of the present invention;
Fig. 5 is the layout enlarged drawing of thermopair circuit 9 on the thermometric pad of the present invention;
Among the figure: the hole 2 of opening on thermometric pad 1, the thermometric pad, thermometric pad line outlet 3, connection line 4, thermocouple temperature measurement end 5, polytetrafluoroethylene floor 6, thin spongy layer 7, small magnet 8, thermopair 9, connecting line 10, terminal box 11.
Embodiment
As shown in Figure 1, 2, the temperature-sensing mattress system of verifying shelf temperature distribution evenness of freeze drier has thermometric pad 1, and the thermometric spacer has polytetrafluoroethylene floor 6, thin spongy layer 7 upper and lower two-layer.Evenly be densely covered with aperture 2 on the thermometric pad, and be installed with copper-constantan thermocouple 9, copper-constantan thermocouple thermometric end 5 is arranged in below the thin spongy layer 7, and each thermocouple temperature measurement end is equipped with a small magnet 8.
Shown in Fig. 3,4,5, in the thermometric pad thermopair wiring diagram of the present invention, wirings such as 9 (1), 9 (2), 9 (3) are identical, and wiring is axisymmetricly on whole thermometric pad.Copper-constantan thermocouple 9 unifications are drawn through the line outlet 3 of thermometric pad, and link to each other with the aviation of freeze dryer vacuum tank is slotting by connection line 4, and aviation is inserted and joined with connecting line 10, terminal box 11 successively.
The size of thermometric pad is decided according to freeze dryer shelf size.The thermometric pad divides two-layer, interlayer epoxy resin close adhesion, and the thin spongy layer 7 of lower floor directly contacts with shelf, and its softness helps the three and closely contacts better to providing buffer action between mat and thermopair, the shelf; The upper strata is a polytetrafluoroethylene floor 6, and its gravity helps thermopair and contacts closely with shelf, and it is processed into strip, is beneficial to foldingly, lays for not the time spent and brings convenience.In addition, sponge, teflon and epoxy resin are at low temperatures (the freeze dryer shelf temperature is generally between room temperature is to-80 ℃) and have stability preferably, the material that electrical insulating property and thermal conductivity are low, be unfavorable for the heat transmission of shelf, therefore the thermometric pad that utilizes this material to do can reflect the Temperature Distribution of shelf itself preferably.Thermopair 9 aperture 2 from the thermometric pad penetrates, and each point on the shelf is carried out thermometric.For guaranteeing that the thermopair gauge head well contacts with shelf, at each thermocouple temperature measurement end a small magnet 8 is housed, the suction between magnet and shelf plays this effect.All thermopairs 9 are exported from line outlet 3 through the both sides unification of thermometric pad, and link to each other with the inside aviation of freeze dryer vacuum tank is slotting by connection line 4 (all connecting lines all are the part of thermocouple wire in the literary composition).It more than is part in the freeze drying box.Insert the connecting line 10 of output from aviation and import numbered terminal box 11 accordingly, the thermopair of arranging on numbering and the thermometric pad is corresponding one by one, promptly with the freeze dryer shelf on each point corresponding one by one.Appoint to get and connect the line that from terminal box and link to each other with the multiplex temperature collection system and get final product, also can directly insert freeze dryer temperature acquisition equipment, the input computing machine, promptly obtain the temperature of numbering on the pairing shelf of circuit of getting, can record freeze dryer shelf each point temperature in real time with the method, thus the homogeneity that checking freeze dryer shelf temperature distributes.
Total system is divided in the freeze drying box and the outer two parts of freeze drying box, and the wiring of part thermometric directly contacts with shelf in the case; The outer partial line road of case directly links to each other with temperature acquisition system by the numbering input box.Two parts are inserted by the aviation of freeze dryer itself and are linked to each other, and co-operation when the control shelf is in uniform temperature under the state of well heater and solution circulation pump and attemperating unit unlatching, is measured the temperature of each point on the shelf, verifies the homogeneity of its Temperature Distribution.
The temperature-sensing mattress system of this verifying shelf temperature distribution evenness of freeze drier can be made two kinds of patterns of vacuum type and antivacuum type.Vacuum type is meant the pattern by thermometric pad and external cabling box in the slotting connection of the aviation freeze drying box; Antivacuum type is meant the pattern of directly the connection line correspondence being linked the interface of case external connection box.Because vacuum has certain influence to temperature, during freeze dryer work, be in for a long time under the vacuum at drying stage, therefore, generally under vacuum, verify shelf temperature distribution evenness, should adopt vacuum type to discharge the interference of vacuum.And freeze dryer is operated in pre-freeze and does not need to provide vacuum environment during the stage, distributes if measure the freeze-drying shelf temperature of this moment, then only needs to adopt antivacuum type to get final product.
Claims (1)
1. the temperature-sensing mattress system of a verifying shelf temperature distribution evenness of freeze drier, it is characterized in that, it has thermometric pad (1), the thermometric spacer has polytetrafluoroethylene floor (6), on the thin spongy layer (7), two-layer down, interlayer epoxy resin close adhesion, evenly be densely covered with aperture (2) on the thermometric pad, and be installed with copper-constantan thermocouple (9), copper-constantan thermocouple thermometric end (5) is arranged in below the thin spongy layer (7), each thermocouple temperature measurement end is equipped with a small magnet (8), copper-constantan thermocouple (9) is unified draws through the line outlet (3) of thermometric pad, and insert by the aviation of connection line (4) and freeze dryer vacuum tank and to link to each other, aviation slotting successively with connecting line (10), terminal box (11) is joined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100496816A CN100376880C (en) | 2006-03-02 | 2006-03-02 | Temperature-sensing mattress system for verifying shelf temperature distribution evenness of freeze drier |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100496816A CN100376880C (en) | 2006-03-02 | 2006-03-02 | Temperature-sensing mattress system for verifying shelf temperature distribution evenness of freeze drier |
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| CN1818575A CN1818575A (en) | 2006-08-16 |
| CN100376880C true CN100376880C (en) | 2008-03-26 |
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| CNB2006100496816A Expired - Fee Related CN100376880C (en) | 2006-03-02 | 2006-03-02 | Temperature-sensing mattress system for verifying shelf temperature distribution evenness of freeze drier |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748867A (en) * | 2013-12-27 | 2015-07-01 | 楚天科技股份有限公司 | Product temperature monitoring device for freeze dryer |
| CN104748873B (en) * | 2013-12-27 | 2018-02-27 | 楚天科技股份有限公司 | Device for monitoring temperature and placement localization method for automatic feed freeze dryer |
| US10605527B2 (en) * | 2015-09-22 | 2020-03-31 | Millrock Technology, Inc. | Apparatus and method for developing freeze drying protocols using small batches of product |
| CN107014516A (en) * | 2017-05-26 | 2017-08-04 | 中国科学院寒区旱区环境与工程研究所 | A kind of ice core borehole temperature measuring equipment |
| CN108896433B (en) * | 2018-09-05 | 2020-09-11 | 福建省闽东力捷迅药业有限公司 | Method for verifying heat distribution uniformity and sublimation efficiency of freeze dryer plate layer |
| CN110530538A (en) * | 2019-10-15 | 2019-12-03 | 中国商用飞机有限责任公司 | Thermometric pad |
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2006
- 2006-03-02 CN CNB2006100496816A patent/CN100376880C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 冻干机搁板温度均匀性验证. 郑效东.第八届全国冷冻干燥学术交流会. 2005 * |
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