CN106225470A - A kind of vacuum freeze drier heat exchanger plate - Google Patents
A kind of vacuum freeze drier heat exchanger plate Download PDFInfo
- Publication number
- CN106225470A CN106225470A CN201610844069.1A CN201610844069A CN106225470A CN 106225470 A CN106225470 A CN 106225470A CN 201610844069 A CN201610844069 A CN 201610844069A CN 106225470 A CN106225470 A CN 106225470A
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- China
- Prior art keywords
- plate
- heat exchanger
- carbon fiber
- exchanger plate
- heat
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
Abstract
The invention discloses a kind of vacuum freeze drier heat exchanger plate, including upper plate, lower plate, isolating bar and strip of paper used for sealing square steel, upper plate welds mutually with lower plate vis-a-vis and by strip of paper used for sealing square steel and forms hollow heat exchanger plate, isolating bar forms the medium channel for the heat transfer medium that circulates in being fixed on hollow heat exchanger plate, the inwall of upper plate and lower plate is equipped with carbon fiber composite board, carbon fiber composite board includes porous metallic layers and carbon fiber board, and the upper and lower surface of porous metallic layers connects carbon fiber board respectively.Carbon fiber composite board is while transmission heat, due to the porous metals Rotating fields having, dissipated the heat transmission problem of non-uniform occurred because of the unusual fluctuation of heat transfer medium, extend the response time that heat unusual fluctuation is changed by heat exchanger plate, serve the effect of steady heat transfer homogeneous media heat transfer, the cyclical heat stress making the paint films such as resistance to pollution layer be subject to significantly diminishes, and extends the use cycle of paint film.
Description
Technical field
The present invention relates to vacuum freeze field, particularly to a kind of vacuum freeze drier heat exchanger plate.
Background technology
The operation principle of vacuum freeze drier is first to allow product freeze, and provides the most under vacuum conditions and suitably rises
China's heat, makes the moisture in frozen product or solvent conversion become water vapour, reaches the purpose of product dehydrate, wherein, freezing of product
It is to carry out on the heat exchanger plate in drying baker with sublimation process.
The heat exchanger plate of existing use is all hollow heat exchanger plate, the medium channel formed by hollow, then passes to pass
Thermal medium and realize heat exchange.Existing heat exchanger plate also exists heat transfer inequality in diabatic process, and heat transfer medium flow-disturbing is relatively big, heat
The problems such as power board shaking amplitude is bigger, cause heat exchanger plate to cannot be used for the occasion having strict demand to heat exchange, constrain
The development of heat exchanger plate.Meanwhile, in heat exchanging process, the cyclic strains of high temperature to low temperature causes heat exchanger plate surface-coated
Anticorrosion paint film is after repeated, it may appear that chaps, bubble, the problem such as warpage, causes heat exchanger plate generation depainting phenomenon, heat to be handed over
Change the use cycle of plate less than expection.
Summary of the invention
The goal of the invention of the present invention is: for the problem of above-mentioned existence, it is provided that a kind of vacuum freeze drier heat exchange
Plate, to solve the deficiency of above-mentioned existence.
The technical solution used in the present invention is as follows: a kind of vacuum freeze drier heat exchanger plate, including upper plate, lower plate, every
Weld mutually from bar and strip of paper used for sealing square steel, upper plate and lower plate vis-a-vis and by strip of paper used for sealing square steel and form hollow heat exchanger plate, isolating bar
Form the medium channel for the heat transfer medium that circulates, upper plate and lower plate in being fixed on hollow heat exchanger plate and constitute the one of medium channel
Face forms the inwall of upper plate and lower plate respectively, and the another side of working and lower plate forms contact surface, and the inwall of upper plate and lower plate is all provided with
Having carbon fiber composite board, carbon fiber composite board to include porous metallic layers and carbon fiber board, the upper and lower surface of porous metallic layers is respectively
Connect carbon fiber board.
Carbon fiber composite board is while transmission heat, and due to the porous metals Rotating fields having, the change of heat is through many
After mesoporous metal Rotating fields absorbs, it will with small change or unchanged show, and then dissipate because of heat transfer medium
Unusual fluctuation and occur heat transmission problem of non-uniform, extend the response time (conductivity of heat that heat unusual fluctuation is changed by heat exchanger plate
Material that can be the best, heat dispersion is the best, the highest to the sensitivity of thermal change), serve steady heat transfer homogeneous media
The effect of heat transfer, the cyclical heat stress making the paint films such as resistance to pollution layer be subject to significantly diminishes, and then extends the use cycle of paint film.
Further, the contact surface of upper plate and lower plate is equipped with resistance to pollution layer, and resistance to pollution layer is resistant release coating, the anti-snearing of resistant
Material is made up of the raw material of following weight portion: vinylite 45-50 part, modified graphene 1-3 part, Nano titanium dioxide 4-6
Part, Cu and its oxides powder 7-9 part, aluminium powder 12-15 part, butyl acetate 15-18 part, DAA 3-9 part, silicon dioxide powder
End 3-5 part, dispersant 1-2 part and levelling agent 1-2 part.
In order to preferably extend the use cycle of the carbon fiber composite board making the present invention, prevent heat transfer medium from polluting carbon fiber
Composite plate, porous metallic layers and carbon fiber board form carbon fiber composite board by the way of compressing, carbon fiber composite board
Edge passes through carbon fiber board edge sealing.
Further, the thickness of carbon fiber composite board is 0.5-2mm, fixes with upper plate and lower plate respectively and is connected.
Further, porous metallic layers is formed by multiple porous metals paillon foil superpositions.
Further, porous metals paillon foil is made up of the metal polyporous material that Cu-Al solid solution is matrix phase, and its thickness is
0.1-0.3mm, porosity is 60-65%.
Further, the preparation method of porous metals paillon foil includes:
Step 1, Cu powder and Al powder are uniformly mixed to form compound for 4:6 in mass ratio, will mix for 1:26 the most in mass ratio
Close in the mixed solution that material adds ethanol, ammonium hydrogen carbonate and PVB binding agent, wherein ethanol, ammonium hydrogen carbonate and the matter of PVB binding agent
Amount ratio is 50:3:1, is uniformly mixed, obtains suspension;
Step 2, being injected in the die cavity of mould by suspension, drying after forming forms diaphragm;
In step 3, the sintering die cavity that diaphragm loading and this diaphragm profile are matched, take out diaphragm after heat-agglomerating and get final product.
In order to preferably extend the use cycle of the carbon fiber composite board making the present invention, prevent heat transfer medium from polluting carbon fiber
Composite plate, described isolating bar is hollow isolating bar, and isolating bar is fixing with upper plate and lower plate even by the connected mode of vacuum brazing
Connect.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: carbon fiber composite board is in transmission
While heat, due to the porous metals Rotating fields having, the change of heat is after porous metals Rotating fields absorbs, it will with relatively
Little change or unchanged show, and then dissipated that the heat transmission occurred because of the unusual fluctuation of heat transfer medium is uneven asks
Topic, extends the response time that heat unusual fluctuation is changed by heat exchanger plate, serves the effect of steady heat transfer homogeneous media heat transfer, makes
The cyclical heat stress that the paint films such as resistance to pollution layer are subject to significantly diminishes, and extends the use cycle of paint film.
Accompanying drawing explanation
Fig. 1 is a kind of vacuum freeze drier resistant heat exchanger plate structural representation of the present invention;
Fig. 2 is the structural representation of Section A-A in Fig. 1;
Fig. 3 is the part-structure schematic diagram of section B-B in Fig. 1;
Fig. 4 is the partial enlarged drawing of C portion in Fig. 2;
Fig. 5 is the structural representation of a kind of embodiment of Fig. 3;
Fig. 6 is the structural representation of the another embodiment of Fig. 3;
Fig. 7 is the rib structure front view of the present invention;
Fig. 8 is the structural representation of the rhombus projection of Fig. 7;
Fig. 9 is the structural representation of the carbon fiber composite board of the present invention;
Figure 10 is the porous metals paillon foil partial enlargement structural representation of the present invention.
Labelling in figure: 1 is upper plate, 2 is lower plate, and 3 is isolating bar, and 4 is strip of paper used for sealing square steel, and 5 is medium channel, and 6 is inwall, 7
For contact surface, 8 is medium inlet, and 9 is media outlet, and 10 is resistance to pollution layer, and 11 is constant current device, and 12 is rhombus projection, and 13 is rib
Plate, 14 is carbon fiber composite board, and 1401 is porous metallic layers, and 1402 is carbon fiber board.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1 to Figure 3, a kind of vacuum freeze drier resistant heat exchanger plate, including upper plate 1, lower plate 2, isolation
Bar 3 and strip of paper used for sealing square steel 4, upper plate 1 and lower plate 2 vis-a-vis and by strip of paper used for sealing square steel 4 mutually weld formation hollow heat exchanger plate, isolate
Bar 3 forms the medium channel 5 for the heat transfer medium that circulates in being fixed on hollow heat exchanger plate, and upper plate 1 and lower plate 2 constitute medium and lead to
The one side in road 5 forms the inwall 6 of upper plate 1 and lower plate 2 respectively, and the another side of upper plate 1 and lower plate 2 forms contact surface 7, in strip of paper used for sealing side
The symmetric position opening of steel 4 joint forms medium inlet 8 and media outlet 9 respectively, and heat transfer medium is entered by medium inlet 8
In the medium channel 5 of heat exchanger plate, then leaving heat exchanger plate through media outlet 9, the contact surface 7 of upper plate 1 and lower plate 2 is equipped with
Resistance to pollution layer 10, is provided with constant current device 11 in medium channel 5, constant current device 11 includes that two or more is mounted side by side and puts down with isolating bar
The constant current element of row.
Furthermore, resistance to pollution layer 10 is resistant release coating, and resistant release coating is by the raw material group of following weight portion
Become: vinylite 45-50 part, modified graphene 1-3 part, Nano titanium dioxide 4-6 part, Cu and its oxides powder 7-9
Part, aluminium powder 12-15 part, butyl acetate 15-18 part, DAA 3-9 part, SiO 2 powder 3-5 part, dispersant 1-2 part and
Levelling agent 1-2 part.
Furthermore, the preparation method of resistant release coating comprises the following steps:
Step 1, by Graphene that thickness is 10-20nm, proportion relation for 1:80 in mass ratio is blended in stirring with dehydrated alcohol
In device and be sufficiently stirred for, the silane coupler being subsequently adding 0.6wt% stirs, then mixture is put into ultrasonic emulsification divides
Dissipate device fully dispersed, finally take out mixture and put into drying in baking oven, obtaining modified graphene, standby;
Step 2, vinylite and dispersant will be had to add in reactor, then with blender with the rotating speed of 800r/min to mixed
Charge-coupled point is stirred, until being uniformly dispersed, obtaining base material;
Step 3, modified graphene is added in DAA stir, obtain graphene dispersing solution, base material is added graphite
Alkene dispersion liquid is uniformly mixed, obtains mixed liquor;
Step 4, SiO 2 powder is ground go thick after, with Nano titanium dioxide, Cu and its oxides powder and aluminium powder one
With adding in butyl acetate, it is uniformly mixed, obtains compound, add mixture in mixed liquor, with blender to mixing
Liquid is sufficiently stirred for, and mixing speed is 800r/min, until being uniformly dispersed, obtains initial point;
Step 5, levelling agent is added in initial point, obtain uncured coating after being uniformly dispersed with dispersion machine, by uncured
Coating pump in the storage tank of air gun, be then sprayed on the surface of the matrix processed with air gun, stand to being coated with
After laminar flow is flat, vacuum bakeout film-forming at 140 DEG C, it is incubated 10min the most again, after cooling to room temperature with the furnace and get final product.
In order to preferably explain and implement the anticorrosion antifouling paint of the present invention, table 1 below shows that the hard of the present invention gathers
The several concrete formula of urethane material, it should illustrate, formula is primarily to preferably implement the present invention in detail below, and not
In order to limit the present invention.
Table 1:
Note: 1. impact strength is measured by the regulation of GB/T 1732-93, and adhesive force is by the regulation of GB/T9286;Adhesive force is divided into
0-5 level, wherein 0 grade of expression is best;
2. contaminated resistance is that the stain resistant method of testing utilizing the offer of gram Lay benefactor department is measured, and is anti-to smear before and after spray
Penetrate the rate of descent of coefficient to evaluate stain resistance;
As can be drawn from Table 1, the resistant release coating of the present invention has good impact resistance, and adhesive force is strong, stain resistance
Can be excellent.
Being preferably carried out mode as one, one end from corresponding strip of paper used for sealing square steel maximum distance of isolating bar 3, with neighbour
The isolating bar 3 on limit forms medium and turns to mouth 15, turns at mouth 15 as it is shown in figure 1, constant current device 11 is arranged at medium, certain constant current
Device 11 may also set up other positions paralleled with isolating bar 3.
As a kind of embodiment, as shown in Figure 6 and Figure 8, constant current element is rhombus projection 12, the fixing peace of rhombus projection 12
Being contained on the inwall 6 of upper plate 1 or the inwall 6 of lower plate 2, rhombus projection 12 is rhombus with the joint face of upper plate 1 or lower plate 2,
The center of rhombus projection 12 bulges formation cambered surface.
As one embodiment with improvement, rhombus projection 12 is respectively and fixedly installed to inwall 6 or the lower plate 2 of upper plate 1
Inwall 6 on, the rhombus projection 12 of upper plate 1 is symmetrically set with the rhombus projection 12 of lower plate 2.
As a kind of alternative embodiment, as shown in Fig. 3, Fig. 5 and Fig. 7, constant current element is the floor 13 of sector, floor
13 can only be fixedly mounted on the inwall of upper plate 1, or are only fixedly mounted on the inwall of lower plate 2, to realize being situated between heat transfer
The water conservancy diversion orientation of matter, but this set effect is not optimum.
As one embodiment with improvement, floor 13 is respectively and fixedly installed to the inwall 6 of upper plate 1 and the inwall 6 of lower plate 2
On, the floor 13 of upper plate 1 is symmetrically set with the floor 13 of lower plate 2, or setting of mutually staggering, as it is shown on figure 3, when mutually
When being symmetrical arranged, forming that the passage that formed between two floors 13 of the heat transfer medium turned to of eddy flow is sharp to shove, heat transfer medium is more
Flow evenly through heat exchanger plate, it is achieved that preferably uniformly transfer heat;During as it is shown in figure 5, arrange when mutually staggering, floor 13 is mutual
Between form a plurality of directed access, cause heat transfer medium to be subdivided into a plurality of shunting and trickled floor 13, and then achieve preferably
Uniformly transfer heat.
Furthermore, it is contemplated that in heat exchanging process, high temperature causes heat exchanger plate table to the cyclic strains of low temperature
The resistance to pollution layer 10 that topcoating is covered after repeated, occurs that be full of cracks, foaming, warpage equiprobability will be greatly increased, simultaneously, it is contemplated that only
Heat transfer medium uniformly transfer heat cannot be ensured, in order to further extend use cycle and the guarantor of resistance to pollution layer 10 by constant current device 11
Card uniformly transfer heat, the inwall of upper plate 1 and lower plate 2 is equipped with carbon fiber composite board 14, as shown in Fig. 2, Fig. 4, Fig. 9 and Figure 10, on
The inwall 6 of plate 1 and lower plate 2 is equipped with carbon fiber composite board 14, and carbon fiber composite board 14 includes that porous metallic layers 1401 and carbon are fine
Dimension plate 1402, the upper and lower surface of porous metallic layers 1401 connects carbon fiber board 1402 respectively, and carbon fiber composite board 14 is in transmission warm
While amount, due to the porous metals Rotating fields having, the change of heat is after porous metals Rotating fields absorbs, it will with less
Change or unchanged show, and then dissipated that the heat transmission occurred because of the unusual fluctuation of heat transfer medium is uneven asks
Topic, (material that heat transfer property is the best, the heat dispersion that dispels the heat also is got over to extend the response time that heat unusual fluctuation change by heat exchanger plate
Good, the highest to the sensitivity of thermal change), serve the effect of steady heat transfer homogeneous media heat transfer, make resistance to pollution layer 10 be subject to
Cyclical heat stress significantly diminish, and then extend the use cycle of resistance to pollution layer 10.
What deserves to be explained is, the technical scheme of the carbon fiber composite board 14 that the present invention uses not is served only for having resistance to pollution layer
In the heat exchanger plate of 10 structures, when technical scheme is in the heat exchanger plate without resistance to pollution layer of existing use
Time, it also can solve existing heat exchanger plate heat exchange problem unevenly, and its effect played becomes apparent from, heat exchanger plate heat exchange
Quality is obviously improved, and therefore, the carbon fiber composite structure of the present invention is also applied in existing heat exchanger plate.
Furthermore, porous metallic layers 1401 is formed by some porous metals paillon foil superpositions, as it is shown in figure 9, certainly
Porous metallic layers 1401 can be made up of a porous metals paillon foil, it is possible to is constituted (5 porous metals by 5 porous metals paillon foils
Paillon foil cost performance is the highest), the number of porous metals paillon foil selects according to actual needs.
Furthermore, the thickness of carbon fiber composite board 14 is that 0.5-2mm(is preferably 1.3mm), respectively with upper plate 1 and
Lower plate 2 is fixing to be connected.
As a kind of preferred implementation, the thickness of porous metallic layers 1401 is 0.5mm, and the thickness of carbon fiber board 1402 is
0.4mm。
In order to preferably extend the use cycle of the carbon fiber composite board 14 making the present invention, prevent heat transfer medium from polluting carbon fine
Tieing up composite plate 14, porous metallic layers 1401 and carbon fiber board 1402 form carbon fiber composite board 14 by the way of compressing,
The edge of carbon fiber composite board 14 passes through carbon fiber board 1402 edge sealing.
Being preferably carried out mode as one, as shown in Figure 10, porous metals paillon foil is matrix phase by Cu-Al solid solution
Metal polyporous material is made, and its thickness is 0.1-0.3mm, preferably 0.15mm, and porosity is 60-65%.
Furthermore, the preparation method of porous metals paillon foil includes:
Step 1, Cu powder and Al powder are uniformly mixed to form compound for 4:6 in mass ratio, will mix for 1:26 the most in mass ratio
Close in the mixed solution that material adds ethanol, ammonium hydrogen carbonate and PVB binding agent, wherein ethanol, ammonium hydrogen carbonate and the matter of PVB binding agent
Amount ratio is 50:3:1, is uniformly mixed, obtains suspension;
Step 2, being injected in the die cavity of mould by suspension, drying after forming forms diaphragm;
In step 3, sintering die cavity diaphragm loading and this diaphragm profile matched, sintering temperature is risen to 580 DEG C, insulation
30min, then it is warming up to 1150 DEG C, it is incubated 90min, then furnace cooling is to room temperature, finally takes out diaphragm and get final product.
Owing to the addition of carbon fiber composite board, the weight of heat exchanger plate increased, in order to reduce the weight of heat exchanger plate,
Described isolating bar is hollow isolating bar 3, as shown in Figures 2 to 6, isolating bar 3 by the connected mode of vacuum brazing and upper plate 1 and
Lower plate 2 is fixing to be connected.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (8)
1. a vacuum freeze drier heat exchanger plate, including upper plate, lower plate, isolating bar and strip of paper used for sealing square steel, upper plate and lower plate just
Face relatively and welds formation hollow heat exchanger plate mutually by strip of paper used for sealing square steel, isolating bar formed in being fixed on hollow heat exchanger plate for
The medium channel of circulation heat transfer medium, the one side of upper plate and lower plate composition medium channel forms the inwall of upper plate and lower plate respectively,
The another side of working and lower plate forms contact surface, it is characterised in that the inwall of upper plate and lower plate is equipped with carbon fiber composite board, carbon
Fiber composite plate includes porous metallic layers and carbon fiber board, and the upper and lower surface of porous metallic layers connects carbon fiber board respectively.
2. vacuum freeze drier heat exchanger plate as claimed in claim 1, it is characterised in that the contact surface of upper plate and lower plate is equal
Being provided with resistance to pollution layer, resistance to pollution layer is resistant release coating, and resistant release coating is made up of the raw material of following weight portion: vinylite
45-50 part, modified graphene 1-3 part, Nano titanium dioxide 4-6 part, Cu and its oxides powder 7-9 part, aluminium powder 12-15
Part, butyl acetate 15-18 part, DAA 3-9 part, SiO 2 powder 3-5 part, dispersant 1-2 part and levelling agent 1-2 part.
3. vacuum freeze drier heat exchanger plate as claimed in claim 1 or 2, it is characterised in that porous metallic layers is fine with carbon
Dimension plate forms carbon fiber composite board by the way of compressing, and the edge of carbon fiber composite board passes through carbon fiber board edge sealing.
4. vacuum freeze drier heat exchanger plate as claimed in claim 1 or 2, it is characterised in that the thickness of carbon fiber composite board
Degree is 0.5-2mm, fixes with upper plate and lower plate respectively and is connected.
5. vacuum freeze drier heat exchanger plate as claimed in claim 1 or 2, it is characterised in that porous metallic layers is by multiple
Porous metals paillon foil superposition is formed.
6. vacuum freeze drier heat exchanger plate as claimed in claim 5, it is characterised in that porous metals paillon foil is by Cu-Al
Solid solution is that the metal polyporous material of matrix phase is made, and its thickness is 0.1-0.3mm, and porosity is 60-65%.
7. vacuum freeze drier heat exchanger plate as claimed in claim 6, it is characterised in that the preparation side of porous metals paillon foil
Method includes:
Step 1, Cu powder and Al powder are uniformly mixed to form compound for 4:6 in mass ratio, will mix for 1:26 the most in mass ratio
Close in the mixed solution that material adds ethanol, ammonium hydrogen carbonate and PVB binding agent, wherein ethanol, ammonium hydrogen carbonate and the matter of PVB binding agent
Amount ratio is 50:3:1, is uniformly mixed, obtains suspension;
Step 2, being injected in the die cavity of mould by suspension, drying after forming forms diaphragm;
In step 3, the sintering die cavity that diaphragm loading and this diaphragm profile are matched, take out diaphragm after heat-agglomerating and get final product.
8. vacuum freeze drier heat exchanger plate as claimed in claim 1, it is characterised in that described isolating bar is hollow isolation
Bar, isolating bar is connected by the connected mode of vacuum brazing is fixing with upper plate and lower plate.
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CN201610844069.1A CN106225470A (en) | 2016-09-23 | 2016-09-23 | A kind of vacuum freeze drier heat exchanger plate |
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CN201610844069.1A CN106225470A (en) | 2016-09-23 | 2016-09-23 | A kind of vacuum freeze drier heat exchanger plate |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108242530A (en) * | 2016-12-23 | 2018-07-03 | 北京好风光储能技术有限公司 | A kind of lithium slurry battery and its negative plate |
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Application publication date: 20161214 |