CN109346596A - A kind of preparation facilities of annular thermo-electric device and its method for preparing annular thermo-electric device - Google Patents
A kind of preparation facilities of annular thermo-electric device and its method for preparing annular thermo-electric device Download PDFInfo
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- CN109346596A CN109346596A CN201811056133.5A CN201811056133A CN109346596A CN 109346596 A CN109346596 A CN 109346596A CN 201811056133 A CN201811056133 A CN 201811056133A CN 109346596 A CN109346596 A CN 109346596A
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Abstract
The present invention relates to a kind of preparation facilities of annular thermo-electric device and its methods for preparing annular thermo-electric device, comprising: transport tube, forming tube and supplemental cartridge, transport tube include first piston pipe and first piston column；Supplemental cartridge second piston pipe and second piston column；Forming tube includes: the induction heater being surrounded on outside forming tube；With cylindric forming die sleeve that can be free to slide relative to forming tube；Wherein, first piston pipe, second piston pipe and forming die sleeve all have identical internal diameter and outer diameter, and the internal diameter of three is identical as the diameter of first piston column, second piston column.According to the present invention it is possible to which continuous, the quick preparation for realizing annular thermo-electric device can efficiently realize mass production, improve the preparation efficiency of annular thermo-electric device without blowing out.The difficulty for reducing the demoulding of large scale annular thermo-electric device simultaneously, improves finished product rate and reliability.
Description
Technical field
The invention belongs to technical field of thermoelectric conversion, and in particular, to it is a kind of annular thermo-electric device preparation facilities and its
The method for preparing annular thermo-electric device.
Background technique
As a kind of environmental-friendly renewable sources of energy technology, thermoelectric generation technology received widely in the world in recent years
It attractes attention.Thermoelectric power generation technology is the Seebeck effect using semiconductor material, is directly mutually converted thermal energy with electric energy, is had
Have that environmental-friendly, high reliablity, service life be long, pollution-free and noiseless advantage, use temperature range is wide, energy in addition, also having
The features such as enough effectively utilizing low-density energy, the recycling of waste heat and waste heat of automotive exhaust gas, high precision temperature control more than the industry
The high-technology fields such as device and Military Power will have a good application prospect.
One thermo-electric device is often made of multiple N-types and P-type semiconductor thermoelectric element.It is defeated due to each thermoelectric element
Voltage is very low out, in order to obtain higher voltage in order to actually use, usually uses metal or alloy electrode by a N-type heat
Electric device and a p-type thermoelectric element connect into that thermoelectricity list is even, and multiple thermoelectricity lists are occasionally then pressed conductive series connection, thermally conductive in parallel
Structure connects composition thermo-electric device.Current main thermo-electric device is configured to π shape construction.
As existing thermoelectric material, Bi2Te3The hot low-temperature thermoelectric material of base and SiGe base high-temperature thermoelectric material obtain
Preferable application, and using filled skutterudite and half Hao Sile alloy as representative, the novel high-performance heat that can be applied to medium temperature
Electric material receives the extensive concern of researcher because of good application prospect.Currently, the research to filled skutterudite is more
Be concentrate on thermo-electric device development especially optimize filled skutterudite-base thermoelectrical device structure to realize higher thermoelectricity
Device transfer efficiency.
Therefore, the technology for preparing π shape construction filled skutterudite-base thermoelectrical device has more patent literature report, such as can
Referring to existing patent document US6005182, US6759586, US6563039, CN1585145, US6005182, US2002/
0024154、US6759586、US2008/0023057、US2006/0017170、US6563039、CN101447548、
JP11195817 etc..
In this kind of structure, heat source can usually use two kinds of forms, one is in the environment of platen heat sources, i.e. hot-fluid
Perpendicular to the temperature end and low-temperature end of two parallel thermo-electric devices, another kind is column heat source in direction, wherein manufacture and column heat
The difficulty for the π shape thermoelectric generation module that source matches will increase considerably.For this column heat source, the heat of circular structure is used
Electrical part is just more reasonable.Thermal loss can be greatly lowered in this construction, maximally utilise what column heat source was conducted
Heat, to improve heating efficiency.
Although the concept of annular Thermoelectric Generator has been born many years, to the thermo-electric device with circular structure
Research it is still at an early stage, the research report of the annular-structure thermo-electric device closely related with practical application in the world at present
It is less.The Bi delivered such as Gao et al.2Te3Annular electrothermal module (M. high and D.M. Luo Wei, " electrothermal module of ring structure "
(Ring-structured thermoelectric module), Semicond. Sci. Technol.(2007) 22: the
Page 880-883), preparation process is more complicated.
And the preparation for filled skutterudite-base annular-structure thermo-electric device, at present except the patent delivered
(CN201410039382, CN201410626099, CN201410626515), other patents are less.It prepares mainly logical
It crosses the shape of mold and is realized using intermittent sintering, do not embody the advantage on device very well, and common with other
π type device technique it is similar, all need just to can be taken off sample after equal sintering furnaces are cooling after sintering, not only influence preparation effect
Rate can not also be prepared continuously, at the same after more disadvantageously cooling down because thermoelectric material and center bar be different materials to
Cause demoulding difficult, the demoulding of especially large scale annular thermo-electric device product is more difficult, influences very much the yield rate of product
And reliability.
Therefore, there is an urgent need in the art to develop the preparation facilities of efficient, the reliable annular thermo-electric device of one kind and use to be somebody's turn to do
The method that device prepares annular thermo-electric device, to realize that the high-volume of annular thermo-electric device, fast and reliable preparation produce, thus
Promote its real market application.
Summary of the invention
Problems to be solved by the invention:
In view of the problem present on, technical problem to be solved by the present invention lies in provide it is a kind of efficiently, it is reliable, be suitable for batch
The preparation facilities for the annular thermo-electric device that metaplasia produces and its method for preparing annular thermo-electric device.
The means solved the problems, such as:
In order to solve the above-mentioned technical problem, the preparation facilities of a kind of annular thermo-electric device of the invention, comprising: transport tube, molding
Cylinder and supplemental cartridge, for the forming tube between the transport tube and the supplemental cartridge, three is hollow straight-tube shape, internal
It is mutually point-blank connected in the form of concentric shafts,
The transport tube includes:
And it can be relative to the coaxial cylindric first piston pipe free to slide of the transport tube inside the transport tube；With
And it can be relative to the coaxial first piston column free to slide of the first piston pipe inside the first piston pipe；
The supplemental cartridge includes:
And it can be relative to the coaxial cylindric second piston free to slide of the supplemental cartridge inside the supplemental cartridge
Pipe；And it can be relative to the coaxial second piston free to slide of the second piston pipe inside the second piston pipe
Column；
The forming tube includes:
The induction heater being surrounded on outside the forming tube；With
The forming die sleeve of cylindrical shape that can be free to slide relative to the forming tube；
Wherein, the first piston pipe, the second piston pipe and the forming die sleeve all have identical internal diameter and outer diameter,
And the internal diameter of three is identical as the diameter of the first piston column, the second piston column.
According to the present invention, it by being formed as structure simple to operation, does not need just to can be taken off sample after equal sintering furnaces are cooling
Product may be implemented continuous, the quick preparation of annular thermo-electric device without blowing out, can efficiently realize mass production, mention
The high preparation efficiency of annular thermo-electric device.Carry out extrusion demoulding at high temperature simultaneously, avoid it is cooling after because thermoelectric material with
Center bar is different materials to cause the unfavorable of demoulding difficulty, and especially the demoulding of reduction large scale annular thermo-electric device is tired
Difficulty improves finished product rate and reliability.
Also, in the present invention, being also possible to the transport tube further include: with the first piston pipe far from the molding
The first pressure bar of the one end connection of cylinder；The first electricity being connect with the first piston column far from the one end of the forming tube
Machine；The first conveying storehouse of insulating materials is led for storing and conveying flow guiding electrode and high temperature resistant low-heat；It stores and conveys with being used for
First raw material cabin of raw material；The supplemental cartridge further include: connect with the second piston pipe far from the one end of the forming tube
Second pressure bar；The second motor being connect with the second piston column far from the one end of the forming tube；For storing simultaneously
Conveying flow guiding electrode and high temperature resistant low-heat lead the second conveying storehouse of insulating materials；With the second raw material for storing simultaneously transferring raw material
Storehouse.
According to the present invention, the extruding force of the sintering pressure in annular thermo-electric device preparation process and knockout course all passes through
Press rods control what piston tube was realized；Motor is used to control the flexible and mobile of piston boit；It can be by the cooperation of various pieces
Realize charging, electrode material loading, the load of sintering pressure and the annular heat of the thermoelectricity powder in thermo-electric device preparation process
The automation of the knockout course of electrical part is carried out continuously preparation process and improves its yield rate.
Also, in the present invention, being also possible to be formed on the first piston column and first, second conveying storehouse company
First locating slot of the flow guiding electrode of the annular connect；It is formed in the forming die sleeve and is connect with first, second conveying storehouse
Annular flow guiding electrode the second locating slot.
Flow guiding electrode is prepared without in annular material while thermoelectric material sintering according to the present invention it is possible to realize
The preparation for carrying out flow guiding electrode after sintering again simplifies the preparation process of flow guiding electrode and reduces its preparation difficulty.
Also, in the present invention, being also possible between the transport tube and the first piston pipe of inside and described
Between first piston pipe and the first piston column, it is separately provided for the vacuum-packed sealing ring of inside cavity；It is described auxiliary
It helps between cylinder and the second piston pipe and between the second piston pipe and the second piston column, is respectively arranged to
The vacuum-packed sealing ring of inside cavity.
According to the present invention, by the sealing of device various pieces, it ensure that annular thermo-electric device during the preparation process will not
The demoulding for aoxidizing, while being sintered the annular thermo-electric device of completion, which needs not wait for temperature, is down to and carries out close to after room temperature, from
And the preparation of multiple annular thermo-electric devices is carried out continuously.
Also, in the present invention, being also possible to be additionally provided with vacuum interface on the transport tube, capable of vacuumizing and guarantor can be filled with
Protect atmosphere；The storage storehouse for the annular thermo-electric device that storage preparation is completed is additionally provided in the supplemental cartridge.
According to the present invention, vacuum interface can perhaps provide protective atmosphere vacuum or guarantor for device inner vacuum environment
Protection can be improved for the annular thermo-electric device of high temperature bottom knockout by protecting atmosphere combination storage storehouse.
Also, in the present invention, being also possible to be equipped with partition in first, second raw material cabin, the two sides that partition separates are empty
It is interior to be put into p-type or N-type thermoelectricity raw material simultaneously, alternatively, being respectively put into p-type thermoelectricity raw material and N-type thermoelectricity raw material.
According to the present invention, by the way that partition is arranged in raw material cabin, the preparation of single annular thermoelectric element not only may be implemented, but also can
To realize that synchronous preparation is alternately connected the annular thermo-electric device group formed by multiple P, N-type annular thermo-electric device.
The present invention also provides a kind of methods for preparing annular thermo-electric device using above-mentioned preparation facilities, comprising:
The filler stage:
The first piston column is located in the first piston pipe and the second piston pipe simultaneously, drives the first piston pipe
With the second piston pipe to the transport tube synchronizing moving to specified position, and by adjusting the first piston pipe with it is described
Second piston pipe imports flow guiding electrode and thermoelectricity raw material, vacuumizes；Alternatively,
The first piston column is located in the first piston pipe and the second piston pipe simultaneously, drives the first piston
Column, the first piston pipe and the second piston pipe synchronizing moving to specified position, and by adjusting the first piston pipe
Flow guiding electrode and thermoelectricity raw material are imported with the second piston pipe, is vacuumized；
Sintering stage:
It drives the first piston pipe, first piston column synchronous with the second piston pipe to the forming tube, reaches predetermined bits
It postpones and is heated to sintering temperature and is forced into sintering pressure, until thermoelectricity raw material densifies, form the annular thermo-electric device；
Ejection phase:
Reduce pressure on the second piston pipe to contact with the sintered thermo-electric device but no pressure, subsequent described the
To storage storehouse direction synchronizing moving, the first piston column moves backward or keeps quiet for one piston tube and the second piston pipe
Only, after the annular thermo-electric device after being cooled to predetermined temperature with enter the storage storehouse, each part reverts to initial state.
According to the present invention, the preparation method of annular thermo-electric device is to be sent into thermoelectricity material by transport portion or slave part
Material, flow guiding electrode and high temperature resistant low-heat lead insulating materials, the heating of annular thermo-electric device are carried out in moulding section, pressurization is burnt
Knot, sintered ring-shaped device are squeezed out from forming die sleeve by piston tube and are entered auxiliary under thermoelectric material plastic deformation temperatures
Pipe is helped, to realize the extrusion molding preparation of annular thermo-electric device, repeats the above steps and the company of annular thermo-electric device may be implemented
Continuous, quick preparation improves the yield rate of annular thermo-electric device and the preparation efficiency of device without blowing out, convenient for operating,
It is easy to spread.
Also, in the present invention, be also possible to vacuumize by inside of the vacuum interface to the preparation facilities and
It is filled with protective atmosphere；Sintering temperature is controlled by induction heater；It is managed by the first piston pipe and the second piston
Sintering pressure processed.
According to the present invention, it vacuumizes, is filled with protective atmosphere, to can guarantee that sample carries out under vacuum or under protective atmosphere
Molding.Sintered ring-shaped device squeezes out and enters from forming die sleeve under thermoelectric material plastic deformation temperatures, through piston tube
Auxiliary tube, to guarantee easily and fast, smoothly the demoulding without being damaged of annular thermo-electric device, improve preparation efficiency at
Product rate.
Also, in the present invention, temperature end needed for being also possible to the annular thermo-electric device molding, low-temperature end annular
Flow guiding electrode prepares barrier layer by the surface that electrode is contacted with thermoelectricity raw material；Annular in first locating slot is led
On the outer surface of the inner surface of galvanic electricity pole and the annular flow guiding electrode in second locating slot, it is coated with to de-
The release agents such as the boron nitride or graphite of mould.
According to the present invention, barrier layer prevent the diffusion between thermoelectric material and flow guiding electrode and not to thermo-electric device bring
Benefit influences；Release agent, which reduces frictional force, ensure that sintered annular thermo-electric device can be demoulded smoothly during demoulding.
Also, in the present invention, being also possible to that π type device or multiple p-types ought be prepared and N-type device being alternately arranged interconnection
It, can be outside the transport tube filler in the filler stage, moreover it is possible to from the supplemental cartridge filler when annular thermo-electric device；Filler
When, temperature end flow guiding electrode, the N of length needed for being put into π type device according to this from the second conveying storehouse and second raw material cabin
The low-temperature end flow guiding electrode of length needed for type or p-type thermoelectric element, N-type or p-type thermoelectricity material powder, high temperature resistant low-heat lead insulation
Low-temperature end flow guiding electrode, the high temperature resistant low-heat of length needed for material, p-type or N-type thermoelectricity material powder, N-type or p-type thermoelectric element
Insulating materials is led, above-mentioned steps is then repeated and is put into flow guiding electrode, thermoelectricity raw material and high temperature resistant low-heat according to this and lead insulating materials.
According to the present invention, various annular thermo-electric devices can be efficiently prepared convenient, flexiblely.
Invention effect:
The present invention can provide the preparation facilities and system of a kind of efficient, reliable, suitable for mass production annular thermo-electric device as a result,
Preparation Method.According to following specific embodiments and refer to attached drawing, be better understood with above content of the invention and other purposes,
Feature and advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the preparation facilities of annular thermo-electric device according to the present invention；
Fig. 2 is the structural schematic diagram being packed into after the flow guiding electrode of thermo-electric device in preparation facilities of the invention；
Fig. 3 is the structural schematic diagram being packed into after thermoelectricity raw material and heating pressure sintering in preparation facilities of the invention；
Fig. 4 is the schematic diagram of the sintered extrusion process of thermo-electric device in preparation facilities of the invention；
Fig. 5 is the structural schematic diagram that thermo-electric device squeezes out after demoulding completely in preparation facilities of the invention；
Fig. 6 is that preparation facilities preparation of the invention is alternately arranged the thermo-electric device being mutually unified by multiple P/N type ring shape thermo-electric devices
Schematic diagram；
Fig. 7 is the structural schematic diagram of thermo-electric device shown in fig. 6；
Symbol description:
1 transport tube
2 first piston pipes
3 first piston columns
4 first pressure bars
5 first motors
6a, 6b convey storehouse
7a, 7b raw material cabin
8 vacuum interfaces
9 forming tubes
10 induction heaters
11 forming die sleeves
12 supplemental cartridges
13 storage storehouses
14 second piston pipes
15 second piston columns
16 second pressure bars
17 second motors
18 first locating slots
19 second locating slots
20 forming cavities
21 sealing rings
22 thermo-electric devices
23a, 23b flow guiding electrode
24 high temperature resistant low-heat lead insulating materials
D preparation facilities.
Specific embodiment
The present invention is further illustrated below in conjunction with attached drawing and following embodiments, it should be appreciated that attached drawing and following embodiments
It is merely to illustrate the present invention, is not intended to limit the present invention.Identical in the various figures or corresponding appended drawing reference indicates the same part, and saves
Slightly repeated explanation.In addition, transport tube side to be defined as to the left side of equipment to simplify explanation, supplemental cartridge side is defined as equipment
Right side, but by no means imply that present invention is limited only to this.
The present invention provides a kind of extrusion molding and prepares the device of annular thermo-electric device and prepare annular thermoelectricity using the device
The method of device, Fig. 1 are the structural schematic diagrams of the preparation facilities of annular thermo-electric device according to the present invention.As shown in Figure 1, according to
The preparation facilities (hereinafter referred to as preparation facilities D) of annular thermo-electric device of the invention, including three parts are 1 structure of transport tube respectively
At feedstock transportation part, forming tube 9 constitute moulding section and supplemental cartridge 12 constitute slave part.Forming tube 9 is located at
Between transport tube 1 and supplemental cartridge 12.The inside of transport tube 1, forming tube 9 and supplemental cartridge 12 is in the form of concentric shafts mutually one
Be connected on straight line, and three communicate part internal diameter it is identical.
Specifically, transport tube 1 is hollow straight-tube shape, comprising: and can be coaxial relative to transport tube 1 inside transport tube 1
Cylindric first piston pipe 2 free to slide；And it can be coaxial certainly relative to first piston pipe 2 inside first piston pipe 2
By the first piston column 3 slided；One end (the i.e., left side of first piston pipe 2) with first piston pipe 2 far from forming tube 9
The first pressure bar 4 of connection；The first motor 5 being connect with first piston column 3 far from the one end of forming tube 9；For storing simultaneously
Convey the conveying storehouse 6a of flow guiding electrode；With the raw material cabin 7a for storing simultaneously transferring raw material.Also, transport tube 1 and internal first
Between piston tube 2 and between first piston pipe 2 and first piston column 3, it is vacuum-packed to be separately provided for inside cavity
Sealing ring (illustration omitted).
Forming tube 9 is hollow straight-tube shape, connect with transport tube 1 and inside communicates, including the sense being surrounded on outside forming tube 9
The cylindric forming die sleeve 11 answered heater 10 and can be free to slide relative to forming tube 9.In addition, shape on first piston column 3
At having for placing the first locating slot 18 of annular flow guiding electrode being put into from conveying storehouse 6a, 6b.It is formed in forming die sleeve 11
For placing the second locating slot 19 from conveying storehouse 6a, 6b annular flow guiding electrode connected.Specifically, the first locating slot 18
In first piston column 3 close to the end of the side of forming tube 9, the second locating slot 19 is located inside forming die sleeve 11, and the two is used
In the flow guiding electrode for placing thermo-electric device 22.Wherein, the first locating slot 18 and the second locating slot 19 are for positioning flow guiding electrode
Position simultaneously determines outer diameter and internal diameter required for annular thermo-electric device together with flow guiding electrode.
Supplemental cartridge 12 is hollow straight-tube shape, connect with forming tube 9 and inside communicates, comprising: be set to inside supplemental cartridge 12 and
It can be relative to the coaxial cylindric second piston pipe 14 free to slide of supplemental cartridge 12；And it can phase inside second piston pipe 14
Second piston column 15 free to slide coaxial for second piston pipe 14；One end with second piston pipe 14 far from forming tube 9
The second pressure bar 16 of (the i.e., right side of second piston pipe 14) connection；One end with second piston column 15 far from forming tube 9
Second motor 17 of connection；For storing and conveying the conveying storehouse 6b of flow guiding electrode；With the raw material for storing simultaneously transferring raw material
Storehouse 7b.Also, being set respectively between supplemental cartridge 12 and second piston pipe 14 and between second piston pipe 14 and second piston column 15
It sets for the vacuum-packed sealing ring 21 of inside cavity.
The inner space that transport tube 1, forming tube 9 and supplemental cartridge 12 communicate can be vacuumized by vacuum interface 8, also
It can be filled with protective atmosphere, to can guarantee that sample is formed under vacuum or under protective atmosphere.In this implementation form, transport tube
1 is equipped with vacuum interface 8, but not limited to this.Also, being additionally provided with the receipts for the thermo-electric device 22 that storage preparation is completed on preparation facilities D
It receives storehouse 13, supplemental cartridge 12 is set in this implementation form, but not limited to this, it can also be set to transport tube 1 etc..Also, raw material cabin 7a, 7b
It is interior to be equipped with partition, it can be put into p-type or N-type thermoelectricity raw material simultaneously in the two sides space that partition separates, alternatively, being respectively put into p-type
Thermoelectricity raw material and N-type thermoelectricity raw material, to realize the flexible diversification of component preparation.Also, by setting first pressure bar 4,
Second pressure bar 16 can transmit pressure to the first, second piston tube 2,14 and be convenient for changing the size of piston tube and piston boit
Specification.
Fig. 2 is the structural schematic diagram being packed into after the flow guiding electrode of thermo-electric device 22 in preparation facilities D of the invention, and Fig. 3 is
It is packed into thermoelectricity raw material in preparation facilities D of the invention and heats the structural schematic diagram after pressure sintering, Fig. 4 is preparation of the invention
The schematic diagram of the sintered extrusion process of thermo-electric device 22 in device D, Fig. 5 are thermo-electric devices 22 in preparation facilities D of the invention
The structural schematic diagram after demoulding is squeezed out completely.
The thermo-electric device 22 of electroded p-type or N-type thermoelectricity list idol can be prepared respectively by above-mentioned preparation facilities D, below
It is described with reference to the accompanying drawings preparation method of the invention.
It is communicated inside transport tube 1, forming tube 9 and supplemental cartridge 12, it is freely slidable to form the first, second piston tube 2,14
Space.First piston column 3 in transport tube 1 can be free to slide in 2 inside of first piston pipe, so as to provide burning at the time of molding
Knot pressure power and by thermoelectricity loop sample extrusion molding.Second piston column 15 in supplemental cartridge 12 can be in second piston pipe 14
Portion is free to slide, to provide sintering pressure at the time of molding and assist the extrusion molding of thermoelectricity loop sample.
Using state shown in Fig. 2 as initial state, specifically, first piston pipe 2 and second piston pipe 14 are to each other
There are predetermined distance, first piston pipe 2 and first piston column 3 are overlapped ground and are located inside transport tube 1, one end of first piston column 3
It also slides into second piston pipe 14 simultaneously, thus first piston pipe 2, first piston column 3 and the common shape of 14 three of second piston pipe
At a columnar confined space, i.e., forming cavity 20.Second piston column 15 can be located at the 12 any position in inside of supplemental cartridge at this time
It sets, as long as not influencing movement of the first piston column 3 in second piston pipe 14.
Firstly, driving first motor 5, drives first piston pipe 2 to move to the left, drives simultaneously by first pressure bar 4
Second motor 17 drives second piston pipe 14 to be also pushed into forming die sleeve 11 and synchronizes sidesway to the left by second pressure bar 16
Dynamic, so that first piston column 3 enters inside second piston pipe 14, two piston tubes 2,14 synchronizing movings than raw material cabin 7a until lean on
The position in nearly left side, first piston column 3 can remain stationary at this time, or to the side opposite with two piston tubes 2,14 moving directions
To slow movement.Annular thermo-electric device 22 is formed into required temperature end, low-temperature end as shown in Fig. 2, first passing through conveying storehouse 6a, 6b
Flow guiding electrode 23a, 23b of annular are respectively fed to the second locating slot of the first locating slot 18 of first piston column 3, forming die sleeve 11
In 19.
At this point, annular thermo-electric device 22 forms the powder of required p-type or N-type thermoelectricity raw material (hereinafter, can unite when not distinguishing
Referred to as thermoelectricity raw material) it is fed into forming die sleeve 11 and is loaded uniformly by raw material cabin 7a, then drive first motor 5 to make the
One piston tube 2 moves to the right, while the second motor 17 being driven to move the synchronization of second piston pipe 14 to the right, to push throwing
Enter to have the forming die sleeve 11 of thermoelectricity raw material mobile to forming tube 9.To when fixing position, first piston column 3 is still kept fixed, and second
Piston tube 14 and first piston pipe 2 apply certain pressure to thermoelectricity raw material in forming die sleeve 11, open 8 pairs of preparation dresses of vacuum interface
It sets and is vacuumized inside D, the thermoelectricity raw material between three (i.e. in forming cavity 20) is extruded, while being added by the induction of forming tube 9
Hot device 10 begins heat to sintering temperature, continues to be forced into sintering pressure, until thermoelectricity raw material reaches densification.
In addition, this implementation form can also be by raw material cabin 7b filler, specifically, from starting in addition to through raw material cabin 7a filler
State starts, and making first piston column 3, first piston pipe 2 and second piston pipe 14, synchronously inside supplemental cartridge 12 is moved to than original
The position of feed bin 7b on the right side will convey the flow guiding electrode in storehouse 6a, 6b by adjusting first piston pipe 2 and second piston pipe 14
It is respectively fed to the first locating slot 18 and the second locating slot 19, thermoelectricity raw material is sent by forming die sleeve 11 by raw material cabin 7b, is loaded
Uniformly backward forming tube 9 is mobile, and remaining steps are same as described above, repeat no more.
Specifically, it as shown in figure 3, the temperature of the sintering of annular thermo-electric device 22 can be controlled by induction heater 10, burns
Knot pressure power can be loaded by the first, second press rods 4,16 in the first piston pipe 2 in transport tube 1 and the in supplemental cartridge 12
Pressure control in two piston tubes 14.After the completion of sintering, demoulded by supplemental cartridge 12.
As shown in figure 4, reducing the pressure on second piston pipe 14 when thermo-electric device 22 starts to remove forming tube 9, then
First piston pipe 2 inside transport tube 1 is synchronous to the direction of storage storehouse 13 together with the second piston pipe 15 inside supplemental cartridge 12
It is mobile, it is moved to the right in this implementation form.Also, the extrusion molding of annular thermo-electric device 22 should annular thermoelectricity after sintering
Device 22 still in being carried out under the higher temperature of the plastically deformable of thermoelectricity raw material, compared to demoulding thermoelectric material after cooling with
Biggish constraint is generated due to the difference of material thermal expansion coefficient between molding machine, and plastically deformable after sintering
Constraint under higher temperature between thermo-electric device and molding machine is relatively small, it is easier to demould and reduce answering in knockout course
Damage of the power to thermo-electric device.When extrusion molding, second piston pipe 14 should keep contacting with thermo-electric device 22 but no pressure it is same
Moved further, to prevent damage device.At this point, first piston column 3 can it is mobile to 1 side of transport tube (i.e., to two piston tubes 2,14
The opposite direction of moving direction is mobile), it can also remain stationary, thus first piston pipe 2 can make the thermo-electric device in forming cavity 20
22 are detached from from internal first piston column 3 and complete extrusion molding.
As shown in figure 5, first piston pipe 2 and 15 synchronizing moving of second piston pipe are clipped in storage storehouse 13 after extrusion molding
Between thermo-electric device 22 plastic deformation temperatures lower than thermoelectricity raw material are cooled in supplemental cartridge 12 after, with first piston pipe 2,
Second piston pipe 14 disengages and enters in storage storehouse 13.Each part reverts restore to respective initial position after demoulding
Beginning state carries out the preparation of next annular thermo-electric device 22.Thermo-electric device 22 after extrusion continues to cool down in storage storehouse 13,
The thermo-electric device 22 that preparation is completed thoroughly is taken out after cooling from storage storehouse 13.It repeats the above steps and thermo-electric device 22 may be implemented
Continuous preparation.
In addition, thermo-electric device 22 forms required temperature end to annular, flow guiding electrode 23a, 23b of low-temperature end annular pass through electrode
Barrier layer (illustration omitted) is prepared with surface that thermoelectricity raw material contacts.Also, being set in the first locating slot 18 of first piston column 3
The inner surface of annular flow guiding electrode 23b and the second locating slot 19 in forming die sleeve 11 in annular flow guiding electrode
On the outer surface of 23a, it is coated with the release agents such as boron nitride or the graphite to demould.
In addition, due to also being provided with conveying storehouse 6b and raw material cabin 7b in supplemental cartridge 12, so can also be by thermoelectricity raw material, flow guiding electrode
23a, 23b powder and high temperature resistant low-heat lead insulating materials 24 from the raw material cabin 7b in supplemental cartridge 12 and convey storehouse 6b addition.Change speech
It can regard supplemental cartridge 12 as transport tube 1 when passing through the conveying storehouse 6b and raw material cabin 7b adding raw materials in supplemental cartridge 12,
As long as symmetrically executing above-mentioned in relation to filler, sintering and the operation of demoulding, and transport tube 1 at this time plays supplemental cartridge 12
Effect.
Hereinafter, detailed description π type device or multiple p-types and N-type device are alternately arranged the continuous of the thermo-electric device 22 of interconnection
Preparation.Preparation facilities D of the invention prepares π type device or prepares multiple p-types and N-type device is alternately arranged the thermoelectricity device of interconnection
The basic skills of part 22, it is similar with the aforementioned thermo-electric device 22 for preparing electroded p-type or N-type thermoelectricity list idol, so only say
Bright difference.
As shown in fig. 6, being put into length required for π type higher device temperature end according to this from conveying storehouse 6b in this implementation form
The flow guiding electrode 23b of length required for flow guiding electrode 23a and a kind of N-type (or p-type) element low-temperature end, it is then put from raw material cabin 7b
Enter N-type (or p-type) thermoelectricity material powder and tentatively flatten compacting, next from storehouse 6b is put into outer diameter and high temperature water conservancy diversion is electric from conveying
Extreme outer diameter, internal diameter and the identical annular high temperature resistant low-heat of low-temperature end flow guiding electrode internal diameter lead insulating materials 24, further
P-type (or N-type) thermoelectricity material powder is put into the other side of high temperature insulating material and tentatively flattens compacting, so as to form one
A π type device, if high temperature resistant high temperature resistant low-heat, which is added, in the other side of p-type (or N-type) thermoelectricity material powder again leads insulation material
Material 24 repeats above-mentioned steps and is put into flow guiding electrode 23a, 23b, thermoelectricity raw material and high temperature resistant low-heat according to this and leads insulating materials 24,
It so repeats that multiple p-types can be formed and N-type device is alternately arranged the thermo-electric device of interconnection, repeat the thermoelectricity for preparing thermoelectricity list idol
The above-mentioned steps of device 22, can be realized π type device or multiple p-types and N-type device is alternately arranged the thermo-electric device of interconnection
Prepare preparation process.
Then, using method and step identical with the thermo-electric device 22 for preparing thermoelectricity list idol, π type device and is realized with this more
A p-type and N-type device are alternately arranged the preparation of the thermo-electric device of interconnection.Fig. 7 shows the above-mentioned steps system according to this implementation form
It is standby at thermo-electric device 22.
According to the present invention, the preparation of thermo-electric device 22 is to be sent into thermoelectricity raw material, flow guiding electrode 23a, 23b by transport tube 1
And high temperature resistant low-heat leads insulating materials 24, heating, the pressure sintering of annular thermo-electric device 22 is carried out in forming tube 9, after sintering
Ring-shaped device 22 under thermoelectricity raw material plastic deformation temperatures, from forming tube 9 squeeze out and enter supplemental cartridge 12, to realize annular
It is prepared by the extrusion molding of thermo-electric device 22, repeat the above steps may be implemented annular thermo-electric device 22 continuous, quick preparation and
Do not need blowing out, improve the yield rate of annular thermo-electric device and the preparation efficiency of device, be it is a kind of efficiently, it is reliable, be suitable for batch
Quantify the preparation facilities and preparation method of the annular thermo-electric device of production.
Above specific embodiment has carried out further specifically the purpose of the present invention, technical scheme and beneficial effects
It is bright, it should be appreciated that the above is only a kind of specific embodiments of the invention, however it is not limited to protection model of the invention
It encloses, under the objective for not departing from essential characteristic of the invention, the present invention can be presented as diversified forms, therefore the implementation in the present invention
Form is to be illustrative rather than definitive thereof, and is limited since the scope of the present invention is defined by the claims rather than by specification, Er Qieluo
All changes in the full scope of equivalents of the range that claim defines or the range that it is defined are understood to be included in right
In claim.All within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. made should all wrap
Containing within protection scope of the present invention.
Claims (10)
1. a kind of preparation facilities of annular thermo-electric device, comprising: transport tube, forming tube and supplemental cartridge, the forming tube are located at
Between the transport tube and the supplemental cartridge, three is hollow straight-tube shape, and inside is mutually straight at one in the form of concentric shafts
It is connected on line,
The transport tube includes:
And it can be relative to the coaxial cylindric first piston pipe free to slide of the transport tube inside the transport tube；With
And it can be relative to the coaxial first piston column free to slide of the first piston pipe inside the first piston pipe；
The supplemental cartridge includes:
And it can be relative to the coaxial cylindric second piston free to slide of the supplemental cartridge inside the supplemental cartridge
Pipe；And it can be relative to the coaxial second piston free to slide of the second piston pipe inside the second piston pipe
Column；
The forming tube includes:
The induction heater being surrounded on outside the forming tube；With
The forming die sleeve of cylindrical shape that can be free to slide relative to the forming tube；
Wherein, the first piston pipe, the second piston pipe and the forming die sleeve all have identical internal diameter and outer diameter,
And the internal diameter of three is identical as the diameter of the first piston column, the second piston column.
2. a kind of preparation facilities of annular thermo-electric device according to claim 1, which is characterized in that
The transport tube further include:
The first pressure bar being connect with the first piston pipe far from the one end of the forming tube；
The first motor being connect with the first piston column far from the one end of the forming tube；
The first conveying storehouse of insulating materials is led for storing and conveying flow guiding electrode and high temperature resistant low-heat；With
For storing the first raw material cabin of simultaneously transferring raw material；
The supplemental cartridge further include:
The second pressure bar being connect with the second piston pipe far from the one end of the forming tube；
The second motor being connect with the second piston column far from the one end of the forming tube；
The second conveying storehouse of insulating materials is led for storing and conveying flow guiding electrode and high temperature resistant low-heat；With
For storing the second raw material cabin of simultaneously transferring raw material.
3. a kind of preparation facilities of annular thermo-electric device according to claim 1, which is characterized in that
The first positioning of the flow guiding electrode for the annular connecting with first, second conveying storehouse is formed on the first piston column
Slot；
The second positioning of the flow guiding electrode for the annular connecting with first, second conveying storehouse is formed in the forming die sleeve
Slot.
4. a kind of preparation facilities of annular thermo-electric device according to claim 1, which is characterized in that
Between the transport tube and the first piston pipe of inside and the first piston pipe and the first piston column it
Between, it is separately provided for the vacuum-packed sealing ring of inside cavity；
Between the supplemental cartridge and the second piston pipe and between the second piston pipe and the second piston column, point
The vacuum-packed sealing ring of inside cavity She Zhi be used for.
5. a kind of preparation facilities of annular thermo-electric device according to claim 1, which is characterized in that
It is additionally provided with vacuum interface on the transport tube, can vacuumize and protective atmosphere can be filled with；
The storage storehouse for the annular thermo-electric device that storage preparation is completed is additionally provided in the supplemental cartridge.
6. a kind of preparation facilities of annular thermo-electric device according to claim 1, which is characterized in that
It is equipped with partition in first, second raw material cabin, p-type or N-type thermoelectricity can be put into simultaneously in the two sides space that partition separates
Raw material, alternatively, being respectively put into p-type thermoelectricity raw material and N-type thermoelectricity raw material.
7. a kind of method for preparing annular thermo-electric device using preparation facilities described in any one of claim 1 to 6, packet
It includes:
The filler stage:
The first piston column is located in the first piston pipe and the second piston pipe simultaneously, drives the first piston pipe
With the second piston pipe to the transport tube synchronizing moving to specified position, and by adjusting the first piston pipe with it is described
Second piston pipe imports flow guiding electrode and thermoelectricity raw material, vacuumizes；
Alternatively,
The first piston column is located in the first piston pipe and the second piston pipe simultaneously, drives the first piston
Column, the first piston pipe and the second piston pipe synchronizing moving to specified position, and by adjusting the first piston pipe
Flow guiding electrode and thermoelectricity raw material are imported with the second piston pipe, is vacuumized；
Sintering stage:
It drives the first piston pipe, first piston column synchronous with the second piston pipe to the forming tube, reaches predetermined bits
It postpones and is heated to sintering temperature and is forced into sintering pressure, until thermoelectricity raw material densifies, form the annular thermo-electric device；
Ejection phase:
Reduce pressure on the second piston pipe to contact with the sintered thermo-electric device but no pressure, subsequent described the
To storage storehouse direction synchronizing moving, the first piston column moves backward or keeps quiet for one piston tube and the second piston pipe
Only, after the annular thermo-electric device after being cooled to predetermined temperature with enter the storage storehouse, each part reverts to initial state.
8. preparation method according to claim 7, which is characterized in that
Protective atmosphere is vacuumized and is filled with by inside of the vacuum interface to the preparation facilities；
Sintering temperature is controlled by induction heater；
Sintering pressure processed is managed by the first piston pipe and the second piston.
9. preparation method according to claim 7, which is characterized in that
The annular thermo-electric device forms required temperature end, the flow guiding electrode of low-temperature end annular is connect by electrode and thermoelectricity raw material
The surface of touching and prepare barrier layer；
The inner surface of annular flow guiding electrode in first locating slot and the annular in second locating slot
On the outer surface of flow guiding electrode, it is coated with the release agents such as boron nitride or the graphite to demould.
10. preparation method according to claim 7, which is characterized in that
When preparing π type device or multiple p-types and N-type device is alternately arranged the annular thermo-electric device of interconnection, the filler stage
In, it can be outside the transport tube filler, moreover it is possible to from the supplemental cartridge filler；
When filler, the temperature end of length needed for being put into π type device according to this from the second conveying storehouse and second raw material cabin is led
The low-temperature end flow guiding electrode of length needed for galvanic electricity pole, N-type or p-type thermoelectric element, N-type or p-type thermoelectricity material powder, high temperature resistant are low
It is the low-temperature end flow guiding electrode of length needed for thermal conductivity insulating materials, p-type or N-type thermoelectricity material powder, N-type or p-type thermoelectric element, resistance to
High temperature low-heat leads insulating materials, then repeats above-mentioned steps and is put into flow guiding electrode, thermoelectricity raw material and high temperature resistant low-heat according to this and leads
Insulating materials.
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