CN1552920A - Method and apparatus for ultra-low temperature refrigerating treatment and heating treatment continuous treatment - Google Patents
Method and apparatus for ultra-low temperature refrigerating treatment and heating treatment continuous treatment Download PDFInfo
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- CN1552920A CN1552920A CNA031406343A CN03140634A CN1552920A CN 1552920 A CN1552920 A CN 1552920A CN A031406343 A CNA031406343 A CN A031406343A CN 03140634 A CN03140634 A CN 03140634A CN 1552920 A CN1552920 A CN 1552920A
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Abstract
Ultra-low cold and heat continuous treatment and apparatus are disclosed. The process achieves in a closed tank with a heat exchange wall, outer of which a liquid-nitrogen cooling chamber is arranged. Its liquid nitrogen flow is controlled with valve, meanwhile, an electric fan, a thermocouple and heating pipes are arranged in the closed tank. The fan is used to make air in the tank to be heated uniformly. The thermocouple is used for control to supply liquid nitrogen or actuate heating pipelines so as to do continuous cold and heat treatment in the same tank.
Description
Technical field
The present invention relates to method and device that a kind of very low temperature deepfreeze and thermal treatment are finished continuously, it is the wall that a heat exchange interface is set in a closed processes groove, arranged outside one liquid nitrogen cooling chamber at this heat exchange interface, in treatment trough, be provided with simultaneously electrothermal tube, can see through heat exchange interface by the liquid nitrogen in the cooling chamber thus treatment trough is carried out the very low temperature processing, heat-treat by electrothermal tube again, and splendid processing effect is provided.
Background technology
General very low temperature treatment facility as shown in Figure 6, it has an insulation process groove 80, cooperate a wire netting 82 to come the splendid attire process object simultaneously, after the process object arrangement is appropriate, promptly slowly liquid nitrogen is full of treatment trough 80 by supply pipe 84, think that in theory the horizontal plane at liquid nitrogen slowly rises so that before the submergence process object upper surface, object should fully cool off, therefore can lower thermal shock, but unfortunately this kind mode has been ignored two physical phenomenons: (1) temperature curve above the liquid level of static liquid nitrogen is very precipitous; (2) heat is reached the heat transfer rate of liquid nitrogen much larger than the heat transfer rate that under same temperature condition, heat is reached gaseous nitrogen with warm solid; So the subzero treatment program of this kind infusion method, the thermal shock of its generation easily make process object be full of cracks and decortication.
The dealer adopts a kind of mechanical refrigeration equipment in addition at present, its basic structure configuration as shown in Figure 7, it belongs to than progressive deepfreeze equipment, it mainly is to develop because of scientific-technical progress that multistage machining at low temperature is designed to be finished, its cooperation has the refrigerated tank (COOLBOX) 90 of thermal insulation properties, it no longer relies on by the heat exchange pattern of solid to liquid, then the gas stirring that the kinetic energy that utilizes steam state cooperates motor fan 92 that supply pipe 94 is sprayed into the liquid nitrogen in the refrigerated tank 90 and circulates, and the process object that is placed in the refrigerated tank 90 is carried out deepfreeze, it can make thermal shock significantly reduce; Only because the driving fit fully of this refrigerated tank has the design of inlet mouth 96 and venting port 98 again, can't formation temperature in refrigerated tank 90 and the proportional relation of pressure;
According to gas law:
PV＝nkT
The V=volume
P=pressure
The n=molecule number
The k=constant
The T=temperature
Because of the proportional relation of temperature and pressure can't form, in refrigerated tank 90, will there be temperature inconsistent situation in many places to occur, cause process object that the misgivings of distortion are arranged.
This refrigerated tank 90 uses traditional foaming PU weighting material as isolator in addition, and its heat insulation effect is limited can't block electromagnetic radiation heat again.Temperature is low more in refrigerated tank 90 forms relative temperature difference with six tank walls, refrigerated tank 90 becomes the heating member of process object, be its low temperature environment of maintenance or the lasting cooling action of do in the refrigerated tank 90, the liquid nitrogen that sprays into will be more more anxious, liquid nitrogen will have the situation that does not gasify and hoard in refrigerated tank 90 to take place in limited space, and the counter productive that causes is soaked in the liquid nitrogen process object identical with aforementioned.
By above-mentioned explanation as can be known, existing low-temperature treatment plant all fails practical treatment effect is provided, and necessity of being improved is arranged; Again after some process object is carried out the low temperature deepfreeze, must proceed high-temperature heat treatment, after existing deepfreeze device disposes, and can't in this device, continue to heat-treat, that is must be with process object by taking out in treatment trough 80 or the refrigerated tank 90, and then insert in the thermal treatment unit and heat-treat, with regard in theory, after finishing, deepfreeze must treat that it rises again gradually, after near room temperature again with process object by taking out in treatment trough 80 or the refrigerated tank 90, but in the actually operating operator very I haven't seen you for ages waits for that it rises again, and often after cold-treating process finishes, promptly directly process object is taken out in by low temperature environment, the thermal shock that it produced will inevitably cause the be full of cracks or the decortication of process object; Moreover existing deepfreeze device is also relegated to the category of things wanting in the control of the process of rising again, that is process object still might be in the face of the problem of thermal shock when rising again, and this also is that existing treatment unit does not reach perfect part in design.
Summary of the invention
The present invention is because existing cold treatment method and the method that continues to heat-treat after deepfreeze all fail to meet the demand of industrial community, and present relative unit also can't provide the ideal treatment effect, is to study improvement at its disappearance.
Main purpose of the present invention is: the method that provides a kind of very low temperature deepfreeze and thermal treatment to finish continuously, it is the wall that a heat exchange interface is set in a closed processes groove, arranged outside one liquid nitrogen cooling chamber at this heat exchange interface, in treatment trough, be provided with simultaneously electrothermal tube, can see through heat exchange interface by the liquid nitrogen in the cooling chamber thus treatment trough is carried out the very low temperature processing, heat-treat by electrothermal tube again, and can reach the effect that very low temperature deepfreeze and thermal treatment are finished continuously.
Another main purpose of the present invention is: the device that provides a kind of very low temperature deepfreeze and thermal treatment to finish continuously, it is the wall that a heat exchange interface is set in a closed processes groove, arranged outside one liquid nitrogen cooling chamber at this heat exchange interface, this cooling chamber is by the supply of flowrate control valve control liquid nitrogen, in treatment trough, be provided with simultaneously fan, thermopair and electrothermal tube, this fan in order to the gas in the agitation treatment groove to promote equal temp effect, this thermopair is connected with controller, in order to control liquid nitrogen control valve supply liquid nitrogen or the heating of activation electrothermal tube, can in same treatment trough, finish very low temperature thus continuously and handle and thermal treatment.
For reaching above-mentioned purpose, the invention provides the method that a kind of very low temperature deepfreeze and thermal treatment are finished continuously, in an airtight insulation process groove, provide heat-absorbing action to carry out deepfreeze by the heat exchange interface on the wall, and the stirring of fan reaches equal temp effect in the cooperation treatment trough, after finishing, deepfreeze heats by the electrothermal tube that is arranged in the treatment trough again, and the thermal treatment of rising again and continuing under process object directly controlled; Thus, can reach the work flow that deepfreeze and thermal treatment are finished continuously.
The device that the present invention also provides a kind of very low temperature deepfreeze and thermal treatment to finish continuously comprises: a treatment trough and salable covering in the lid of this treatment trough opening part; Formed seal cavity one sidewall is provided with a heat exchange interface after cover cap is bonded to the treatment trough opening part, in this heat exchange interface arranged outside liquid nitrogen cooling chamber is arranged, be equipped with a liquid nitrogen supply pipe in this liquid nitrogen cooling chamber, this supply pipe is provided with flowrate control valve; In the sealing space, be assembled with an electrothermal tube, a thermopair and a fan in addition.
Description of drawings
Fig. 1 separates figure for device major part of the present invention;
Fig. 2 is the apparatus structure configuration schematic diagram shown in Fig. 1 of the present invention;
Fig. 3 is device lid of the present invention and outer cover assembly decomposing schematic representation partly;
Fig. 4 is a partly section schematic perspective view of device combination of the present invention;
Fig. 5 is a partly diagrammatic cross-sectional side elevation of device combination of the present invention;
Fig. 6 is general very low temperature treatment facility structural representation;
Fig. 7 is a kind of existing machinery refrigerating apparatus basic structure configuration schematic diagram.
Nomenclature among the figure
10 treatment troughs, 20 lids
22 cooling chamber, 24 supply pipes
240 flowrate control valves, 26 thermopairs
28 electrothermal tubes, 29 gaskets
30 outer covers, 32 fans
34 motors, 340 axles
80 treatment troughs, 82 wire nettings
84 supply pipes, 90 refrigerated tanks
92 fans, 94 supply pipes
96 inlet mouths, 98 air outlets
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with drawings and Examples.
See also shown in Figure 1, it separates figure for device major part of the present invention, this device comprises a treatment trough 10 and the salable lid 20 that covers on this treatment trough 10, treatment trough 10 openings of embodiment shown in the figure are arranged on the top, in these lid 20 upper set one outer cover 30 is housed in addition, this treatment trough 10 and lid 20 can be made by the material of Taiwan novel No. 163855 " but the low cold insulation chip architecture of high strength Nai Gaore ", on lid 20, be equipped with a liquid nitrogen supply pipe 24, one thermopair 26 and an axle 340, this supply pipe 24 is provided with flowrate control valve 240, this flowrate control valve 240 can be a magnetic valve, then is mounted with a motor 34 in addition on outer cover 30.
Cooperate the apparatus structure configuration schematic diagram of Fig. 2 to see it, wherein the axle 340 on the lid 20 runs through lid 20 and is assembled with a fan 32 in its lower end as can be seen, is assembled with a ring-type electrothermal tube 28 in lid 20 bottom surfaces in addition.
Device lid of the present invention 20 by Fig. 3 is seen it with outer cover 30 assembly decomposing schematic representation partly, can further understand at lid 20 medial surface peripheries and treatment trough 10 opening joint places and be provided with a circle gasket 29, this gasket 29 can be a wool felt, and can see the motor 34 that is arranged on outer cover 30 outsides thus among the figure and drive fan 32 via axle 340 and rotate.
Next see it by Fig. 4, Fig. 5, it is partly section schematic perspective view and a schematic side view of device combination of the present invention, can see in the drawings and be provided with a liquid nitrogen cooling chamber 22 in lid 20 of the present invention; When the present invention's assembling is finished, lid 20 is closed together in treatment trough 10 top opening parts, is the wall of a heat exchange interface in cooling chamber 22 bottom surfaces, and this wall can be made by aluminium casting, supply pipe 24 is communicated with this cooling chamber 22 by the outside, and thermopair 26 penetrates in the treatment trough 10.
When the present invention operates, process object is placed in the treatment trough 10, but its complexed metal net or similar device in order to even processing, seal it unsettled arrangement and the adiabatic effect fashionable being provided by gasket 29 of lid 20 sealing covers, so can have a processing environment of all pressing; But through program control device (not shown) dominant discharge control valve 240 liquid nitrogen is injected cooling chamber 22 in right amount by thermopair 26 when beginning to carry out deepfreeze, liquid nitrogen in cooling chamber 22 absorbs heat to treatment trough 10 via the heat exchange interface of cooling chamber 22 bottom surfaces, the fan 32 that is arranged at simultaneously in the treatment trough 10 also drives rotation by motor 34 through axle 340, in order to the gas in the agitation treatment groove 10 to promote equal temp effect, to solve the bottleneck that produces the many places temperature difference in the treatment trough 10, so can provide accurate temperature control in the cold-treating process; Device of the present invention again can be arranged at cooling chamber 22 treatment trough 10 tops, can be used as the utmost point low temperature barriers of blocking-up heat bridge, and splendid deepfreeze environment is provided.
After deepfreeze finishes, can cut off flowrate control valve 240 and the supply of termination liquid nitrogen by controller, then can be by the power supply of controller conducting electrothermal tube 28, because this thermopair 26 is connected with controller, so can accurately control the temperature variation in the treatment trough 10, heating of electrothermal tube 28 can be risen again in order to the process object after the deepfreeze to be provided, and proceed thermal treatment, can in same treatment trough 10, finish very low temperature deepfreeze and thermal treatment continuously thus.
Method of the present invention mainly is to provide heat-absorbing action by the heat exchange interface on the wall in an airtight insulation process groove 10, and cooperate the stirring of fan to reach equal temp effect, after finishing, deepfreeze heats by the electrothermal tube 28 that is arranged in the treatment trough 10 again, and the thermal treatment of rising again and continuing under can directly controlling process object, it need not to insert in thermal treatment unit by taking out in the treatment trough 10 process object again, simultaneously also the situation of rising again of process object can be accurately controlled, and the unfavorable factor of thermal shock minimum degree can be reduced to.
When in addition carrying out treatment scheme that very low temperature deepfreeze and thermal treatment finishes continuously, also can in treatment trough 10, inject specific gas, and more accurate control effect can be provided according to method of the present invention.
Device of the present invention again can be done the equivalence replacement or the modification of various kenels according to the embodiment described in the aforementioned specification; be arranged on the side such as opening with treatment trough 10; or with cooling chamber 22 together with the heat exchange interface dislocation on the wall of treatment trough 10; certainly; also can be according to the cooperation of general processing technology; component groups such as thermopair 26, electrothermal tube 28 or fan 32 are filled to appropriate location in the treatment trough 10; the equivalence replacement or the modification of only using spirit of the present invention such as and not deviating from the category that scope defined of claims all surely belong to protection scope of the present invention.
By above explanation as can be known, the work flow that the present invention provides a kind of very low temperature deepfreeze of process object and thermal treatment to finish continuously with excellent method and device, and can thoroughly solve the utility value on its true tool progressive and the industry with having the thermal shock problems that very low temperature treatment process and device face now.
Claims (18)
1. the method finished continuously of very low temperature deepfreeze and thermal treatment, it is characterized in that, in an airtight insulation process groove, provide heat-absorbing action to carry out deepfreeze by the heat exchange interface on the wall, and the stirring of fan reaches equal temp effect in the cooperation treatment trough, after finishing, deepfreeze heats by the electrothermal tube that is arranged in the treatment trough again, and the thermal treatment of rising again and continuing under process object directly controlled;
Thus, can reach the work flow that deepfreeze and thermal treatment are finished continuously.
2. the method that very low temperature deepfreeze as claimed in claim 1 and thermal treatment are finished continuously is characterized in that, can inject specific gas in this treatment trough.
3. the device finished continuously of very low temperature deepfreeze and thermal treatment is characterized in that, comprising:
One treatment trough and salable covering in the lid of this treatment trough opening part;
Formed seal cavity one sidewall is provided with a heat exchange interface after cover cap is bonded to the treatment trough opening part, in this heat exchange interface arranged outside liquid nitrogen cooling chamber is arranged, be equipped with a liquid nitrogen supply pipe in this liquid nitrogen cooling chamber, this supply pipe is provided with flowrate control valve;
In the sealing space, be assembled with an electrothermal tube, a thermopair and a fan in addition.
4. the device that very low temperature deepfreeze as claimed in claim 3 and thermal treatment are finished continuously is characterized in that, the opening of this treatment trough is arranged on the top, and lid then covers opening part above this treatment trough.
5. the device of finishing continuously as claim 3 or 4 described very low temperature deepfreezes and thermal treatment is characterized in that, wears on formed seal cavity one sidewall after cover cap is bonded to the treatment trough opening part and is assembled with this thermopair.
6. the device that very low temperature deepfreeze as claimed in claim 5 and thermal treatment are finished continuously is characterized in that this thermopair wears and is assembled on the lid.
7. the device of finishing continuously as claim 3 or 4 described very low temperature deepfreezes and thermal treatment, it is characterized in that, after being bonded to the treatment trough opening part, cover cap is equipped with an axle on formed seal cavity one sidewall, fan is assembled on this axle, holds in addition in the axle in the outside, sealing space to be assembled with motor.
8. the device that very low temperature deepfreeze as claimed in claim 7 and thermal treatment are finished continuously is characterized in that, this axle wears and is assembled on the lid, and fan is assembled on the axle of lid inboard, and groups of motors is loaded on the axle in the lid outside and holds in addition.
9. the device that very low temperature deepfreeze as claimed in claim 8 and thermal treatment are finished continuously is characterized in that, is assembled with an outer cover in this lid outside, and the motor that this drive axle is rotated is placed on this outer cover.
10. the device of finishing continuously as claim 3 or 4 described very low temperature deepfreezes and thermal treatment is characterized in that this heat exchange interface is arranged on the lid medial surface, and this liquid nitrogen cooling chamber is arranged in this lid.
11. the device that very low temperature deepfreeze as claimed in claim 3 and thermal treatment are finished continuously is characterized in that the wall of this heat exchange interface can be made by aluminium casting.
12. the device that very low temperature deepfreeze as claimed in claim 10 and thermal treatment are finished continuously is characterized in that the wall of this heat exchange interface can be made by aluminium casting.
13. the device that very low temperature deepfreeze as claimed in claim 3 and thermal treatment are finished continuously is characterized in that, this flowrate control valve can be a magnetic valve.
14. the device as claim 3 or 4 described very low temperature deepfreezes and thermal treatment are finished continuously is characterized in that, is provided with a circle gasket at lid medial surface periphery and treatment trough opening part applying position.
15. the device that very low temperature deepfreeze as claimed in claim 14 and thermal treatment are finished continuously is characterized in that this gasket is a wool felt.
16. the device as claim 3 or 4 described very low temperature deepfreezes and thermal treatment are finished continuously is characterized in that this electrothermal tube is assembled in the lid medial surface.
17. the device that very low temperature deepfreeze as claimed in claim 3 and thermal treatment are finished continuously is characterized in that, this electrothermal tube is a ring-type electrothermal tube.
18. the device that very low temperature deepfreeze as claimed in claim 16 and thermal treatment are finished continuously is characterized in that, this electrothermal tube is a ring-type electrothermal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031406343A CN1552920A (en) | 2003-05-29 | 2003-05-29 | Method and apparatus for ultra-low temperature refrigerating treatment and heating treatment continuous treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031406343A CN1552920A (en) | 2003-05-29 | 2003-05-29 | Method and apparatus for ultra-low temperature refrigerating treatment and heating treatment continuous treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1552920A true CN1552920A (en) | 2004-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031406343A Pending CN1552920A (en) | 2003-05-29 | 2003-05-29 | Method and apparatus for ultra-low temperature refrigerating treatment and heating treatment continuous treatment |
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| CN (1) | CN1552920A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338378C (en) * | 2005-03-16 | 2007-09-19 | 哈尔滨工业大学 | Sealing device between rotating shaft and liquid nitrogen container |
| CN105349926A (en) * | 2015-11-02 | 2016-02-24 | 浙江百达精工股份有限公司 | Method for manufacturing unleaded brass easy to cut, method for manufacturing balance weight and cooling device |
| CN111235358A (en) * | 2020-03-13 | 2020-06-05 | 西安煤矿机械有限公司 | Cold treatment process for carburized gear piece |
-
2003
- 2003-05-29 CN CNA031406343A patent/CN1552920A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338378C (en) * | 2005-03-16 | 2007-09-19 | 哈尔滨工业大学 | Sealing device between rotating shaft and liquid nitrogen container |
| CN105349926A (en) * | 2015-11-02 | 2016-02-24 | 浙江百达精工股份有限公司 | Method for manufacturing unleaded brass easy to cut, method for manufacturing balance weight and cooling device |
| CN105349926B (en) * | 2015-11-02 | 2017-08-25 | 浙江百达精工股份有限公司 | Cooling device for easy-cutting lead-free brass preparation method |
| CN111235358A (en) * | 2020-03-13 | 2020-06-05 | 西安煤矿机械有限公司 | Cold treatment process for carburized gear piece |
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