CN110592994A - Heat conduction oil dryer with phase change constant temperature - Google Patents
Heat conduction oil dryer with phase change constant temperature Download PDFInfo
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- CN110592994A CN110592994A CN201910989125.4A CN201910989125A CN110592994A CN 110592994 A CN110592994 A CN 110592994A CN 201910989125 A CN201910989125 A CN 201910989125A CN 110592994 A CN110592994 A CN 110592994A
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- cylinder wall
- heat
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- 230000008859 change Effects 0.000 title claims description 12
- 238000001035 drying Methods 0.000 claims abstract description 72
- 239000012782 phase change material Substances 0.000 claims abstract description 29
- 239000012071 phase Substances 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- NIJJYAXOARWZEE-UHFFFAOYSA-N Valproic acid Chemical compound CCCC(C(O)=O)CCC NIJJYAXOARWZEE-UHFFFAOYSA-N 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012074 organic phase Substances 0.000 claims description 4
- CPJSUEIXXCENMM-UHFFFAOYSA-N phenacetin Chemical compound CCOC1=CC=C(NC(C)=O)C=C1 CPJSUEIXXCENMM-UHFFFAOYSA-N 0.000 claims description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims description 2
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 2
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 claims description 2
- 229960004365 benzoic acid Drugs 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 claims description 2
- LDCRTTXIJACKKU-ONEGZZNKSA-N dimethyl fumarate Chemical compound COC(=O)\C=C\C(=O)OC LDCRTTXIJACKKU-ONEGZZNKSA-N 0.000 claims description 2
- 229960004419 dimethyl fumarate Drugs 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 2
- 229960003893 phenacetin Drugs 0.000 claims description 2
- 229960004889 salicylic acid Drugs 0.000 claims description 2
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 claims description 2
- 235000021286 stilbenes Nutrition 0.000 claims description 2
- 229940014800 succinic anhydride Drugs 0.000 claims description 2
- 229960000604 valproic acid Drugs 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000007789 sealing Methods 0.000 description 7
- 238000005338 heat storage Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
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- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a heat-conducting oil drying cylinder with phase-change constant temperature, wherein the drying cylinder is a cylinder body with two sealed ends, and the cylinder body is in a cylinder structure; the side walls of the drying cylinder are of a double-layer structure and respectively comprise an inner cylinder wall and an outer cylinder wall, the inner sides of pipe orifices at two ends of the drying cylinder are respectively provided with an oil inlet tank and an oil outlet tank, and the oil inlet tank and the oil outlet tank are connected through a plurality of heat-conducting oil pipes; a plurality of heat conduction oil pipes are distributed between the inner cylinder wall and the outer cylinder wall, and two ends of each heat conduction oil pipe respectively penetrate through the inner cylinder wall and are respectively connected with the oil inlet groove and the oil outlet groove; and phase-change materials are filled between the inner cylinder wall and the outer cylinder wall. The heat conducting oil pipe between the inner cylinder wall and the outer cylinder wall is spiral, one end of the heat conducting oil pipe is connected with the oil inlet groove, and the other end of the heat conducting oil pipe is connected with the oil outlet groove. The temperature difference between the outer surface and the inner surface of the outer side wall of the heat-conducting oil drying cylinder is reduced, and the heat exchange effect is improved.
Description
Technical Field
The invention belongs to the technical field of papermaking drying equipment, and particularly relates to a heat conduction oil drying cylinder with phase change constant temperature.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Drying is an important unit in the papermaking process, common drying cylinders comprise a steam drying cylinder, a heat conduction oil drying cylinder, a heat radiation drying cylinder and the like, but the surface temperature difference of the drying cylinder taking heat conduction oil and steam as heat sources is large, and although the temperature difference is successfully reduced through structural improvement at present. For example, the rotary type multi-hole and multi-cavity heat conduction oil exchanger (application No. 201810798729.6) invented by Shandong Lutai group Zaozhuang Shangdu paper making machinery limited company innovatively designs a rotary type multi-hole and multi-cavity heat conduction oil exchanger by using heat conduction oil as a heat source, and comprises an outer cylinder, an inner cylinder, an upper sealing head and a lower sealing head, wherein the outer part of the inner cylinder is sleeved with the outer cylinder, an oil guide cavity is arranged between the inner cylinder and the outer cylinder, two ends of the inner cylinder are connected with the upper sealing head and the lower sealing head, an oil through operation side shaft head is fixedly connected with the upper sealing head, an oil through transmission side shaft head is fixedly connected with the lower sealing head, a plurality of partition plates are axially arranged on the outer peripheral surface of the inner cylinder, the oil guide cavity on the outer peripheral surface of the inner cylinder is divided into a plurality of oil cavity units I, a baffle plate is arranged in each oil cavity unit I, the oil cavity units I . Under the condition that a plurality of oil guide cavities are shared, every two oil guide cavities are communicated; a plurality of metal hoses for guiding hot oil from two sides; thus, the effects that oil enters from two sides and the temperature difference between two sides of the oil cylinder is reduced to 0.48 ℃ are achieved. But the internal structure is more complicated and the surface temperature difference cannot be eliminated.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a heat-conducting oil drying cylinder with phase-change constant temperature.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a heat conducting oil drying cylinder with phase change constant temperature is provided, wherein the drying cylinder is a cylinder body with two sealed ends, and the cylinder body is a cylinder body structure;
the side walls of the drying cylinder are of a double-layer structure and respectively comprise an inner cylinder wall and an outer cylinder wall, the inner sides of pipe orifices at two ends of the drying cylinder are respectively provided with an oil inlet tank and an oil outlet tank, and the oil inlet tank and the oil outlet tank are connected through a plurality of heat-conducting oil pipes;
a plurality of heat conduction oil pipes are distributed between the inner cylinder wall and the outer cylinder wall, and two ends of each heat conduction oil pipe respectively penetrate through the inner cylinder wall and are respectively connected with the oil inlet groove and the oil outlet groove;
and phase-change materials are filled between the inner cylinder wall and the outer cylinder wall.
The heat conduction oil enters the oil outlet groove from the oil inlet groove through the heat conduction oil pipe, wherein the heat conduction oil pipe heats the phase change material filled in the interlayer of the cylinder body, namely the interlayer between the inner cylinder wall and the outer cylinder wall. In the working process, the phase-change material is used as a heat storage material and a heat transfer buffer medium, continuously absorbs heat from the heat conduction oil pipeline to melt, and is condensed in the process of transferring heat to paper by the outer cylinder wall to release heat. The phase-change material can automatically balance the temperature change of the outer cylinder body and the inner cylinder body, so that the surface temperature difference of the cylinder body is reduced, and the phase-change material plays an important role in controlling the paper drying process and improving the moisture content and the product quality stability; the invention can enable the heat-conducting oil drying cylinder to better play a heat-conducting role, the phase-change material in contact with the wet paper is condensed and releases heat in the working process, then the drying cylinder rotates to enable the condensation area to be in contact with air, the outward heat transfer rate of the outer cylinder wall is reduced, the heat-conducting oil heats the phase-change material to melt, and the cycle work is carried out; and the drying cylinder rotates at a high speed, and the solid phase-change material and the liquid phase-change material are mixed with each other under the action of the eccentricity, so that the heat transfer process of the heat storage layer can be enhanced, the temperature of the heat storage layer is more uniform, and the outer cylinder wall and the inner cylinder wall can be promoted to further uniformly disperse heat.
In some embodiments, two ends of the cylinder body respectively extend out of the oil inlet pipe and the oil outlet pipe, the oil inlet pipe is connected with the oil inlet tank, and the oil outlet pipe is connected with the oil outlet tank.
In some embodiments, the heat transfer oil pipe between the inner and outer cylinder walls is spiral in shape, with one end connected to the oil sump and the other end connected to the oil sump.
In some embodiments, the oil inlet groove and the oil outlet groove are closed cylindrical groove bodies, a plurality of oil holes are formed in the side wall of each groove body, and the heat conduction oil pipe is fixedly connected with the oil holes.
Preferably, the diameter of the oil inlet groove is 20% -30% of the diameter of the drying cylinder, the height of the oil inlet groove is 5% -10% of the length of the drying cylinder, and the diameter of the oil outlet groove is 20% -30% of the diameter of the drying cylinder, and the height of the oil outlet groove is 5% -10% of the length of the drying cylinder. The oil inlet groove and the oil outlet groove are mainly used for buffering and distributing heat conducting oil.
Preferably, the diameter of the heat-conducting oil pipe is 1-2% of the diameter of the drying cylinder.
In some embodiments, the distance between the inner and outer cylinder walls is 2% -3% of the cylinder diameter.
In some embodiments, the phase change material is an organic phase change material or a low melting point metallic material.
Preferably, the organic phase change material is methyl fumarate, succinic anhydride, valproic acid, benzoic acid, stilbene, phenacetin or salicylic acid.
The low melting point metal may be an alloy of indium, lithium or tin and bismuth.
The invention has the beneficial effects that:
the heat-conducting oil drying cylinder disclosed by the invention realizes uniform and stable temperature of the surface of the drying cylinder, and the surface temperature is stabilized at the phase change point of the phase change material, so that the problem of uneven drying caused by large surface temperature difference of the traditional drying cylinder in the use process of the heat-conducting oil drying cylinder is solved. In actual use, the phase change material can be replaced according to the use temperature, and the phase change points of different phase change materials are different, so that the temperature of the heat conduction oil drying cylinder can be conveniently controlled; in the high-speed rotation process of the rotary drum, the solid phase-change material and the liquid phase-change material are mixed with each other under the action of centrifugal force, so that the heat transfer process of the heat storage layer can be enhanced, and the temperature of the heat storage layer is more uniform.
The heat conducting oil drying device has the advantages of simple structure, low manufacturing difficulty, low cost and convenience in application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of the internal structure of a port face for heat transfer oil drying according to the present invention;
FIG. 2 is a schematic view of the top view of the internal structure of the heat transfer oil drying apparatus of the present invention;
the device comprises a drying cylinder 1, a drying cylinder 2, an inner cylinder wall 3, an outer cylinder wall 4, an oil inlet groove 5, an oil outlet groove 6, a heat conduction oil pipe 7, an oil inlet pipe 8 and an oil outlet pipe.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, the oil discharge tank 5 or the oil feed tank 4 are connected to each other by a heat-conductive oil pipe 6.
The side wall of the oil inlet tank 4 is provided with a plurality of oil holes, a plurality of heat conduction oil pipes 6 are respectively connected with the oil holes, and the heat conduction oil pipes 6 on the outer side of the oil inlet tank 4 are radially arranged; the outlet ends of a plurality of heat conduction oil pipes 6 are respectively connected with the oil inlet tank 4, and the heat conduction oil pipes 6 on the outer side of the oil outlet tank 5 are radially arranged; the heat conducting oil enters a plurality of heat conducting oil pipes 6 from the oil inlet groove 4 at the same time, enters the part between the inner cylinder wall 2 and the outer cylinder wall 3, and then completely flows back to the oil outlet groove 5 in a radial shape.
The phase change material is filled between the inner cylinder wall 2 and the outer cylinder wall 3, and the solid-liquid phase change material can flow between the inner cylinder wall 2 and the outer cylinder wall 3.
Part of the heat conduction oil pipe 6 is distributed between the inner cylinder wall 2 and the outer cylinder wall 3 of the drying cylinder 1, and the heat conduction oil reaches the other end of the drying cylinder 1 from one end of the drying cylinder 1 through the side wall, so that the problem of uneven heat exchange of the drying cylinder 1 is solved.
Compared with the prior art, the invention is different in that the two ends of the drying cylinder 1 are respectively provided with the oil outlet groove 5 and the oil inlet groove 4, the oil outlet groove 5 and the oil inlet groove 4 can realize the temporary storage of heat conduction oil, and then the heat conduction oil can be uniformly and radially discharged, after the heat conduction oil enters between the inner cylinder wall and the outer cylinder wall, the heat conduction oil carries out uniform heat conduction and heat exchange in the side wall of the drying cylinder, and the problem of nonuniform heat exchange of the heat conduction oil drying cylinder is solved.
Seen from the side, the heat conduction oil cylinder is similar to the shape of a wheel, the drying cylinder 1 is a cylinder structure, after the drying cylinder 1 rotates, under the action of centrifugal force, phase-change materials flow along the inner wall of the outer cylinder wall, liquid films are formed by the phase-change materials of the liquid, the phase-change materials meet the outer surface of the drying cylinder 1, and heat release is carried out after temperature difference occurs, so that the temperature difference of the surface of the drying cylinder 1 is reduced, and meanwhile, the surface temperature of the drying cylinder 1 is uniformly distributed. The problem of current dryer 1 inside and outside surface difference in temperature great is solved.
Two ends of the heat conduction oil pipe 6 respectively penetrate through the inner cylinder wall 2 and keep sealing with the inner cylinder wall 2, so that the phase change material is prevented from leaking between the inner cylinder wall 2 and the outer cylinder wall 3.
The heat conducting oil pipes are spirally arranged between the inner cylinder wall 2 and the outer cylinder wall 3, as shown in fig. 2, the flow direction of the heat conducting oil is from the direction of the oil inlet tank 4 to the direction of the oil outlet tank 5, then from the direction of the oil outlet tank 5 to the direction of the oil inlet tank 4, then from the direction of the oil inlet tank 4 to the direction of the oil outlet tank 5, and then the heat conducting oil pipes penetrate through the inner cylinder wall 2 and then enter the oil outlet tank 5. During the flowing process, the phase-change material is heated by sufficient heat exchange with the phase-change material.
The oil inlet groove 4 is connected with the oil inlet pipe 7, the oil outlet groove 5 is connected with the oil outlet pipe 8, the oil inlet pipe 7 is used for oil inlet, the oil outlet pipe 8 is used for oil outlet, the oil inlet pipe 7 and the oil outlet pipe 8 can enable the whole drying cylinder 1 to rotate, and the flowing of heat conducting oil is not influenced in the rotating process.
The diameter and height of the oil inlet tank 4 and the oil outlet tank 5 cannot be too large, the diameter is 20-30% of the diameter of the drying cylinder, and the height is 5-10% of the length of the drying cylinder. For example, the drying cylinder has a diameter of 2500 mm, a length of 2000 mm, an oil inlet groove with a diameter of 600 mm and a height of 200mm, an oil outlet groove with a diameter of 600 mm and a height of 200mm, a heat conduction oil pipe with a diameter of 40mm, and a distance between the inner cylinder wall and the outer cylinder wall of 70 mm.
The phase transition temperature of the organic phase change material is shown in table 1:
TABLE 1 phase transition temperature of the materials
The phase transition temperature of low-melting point metal such as tin-bismuth alloy can be adjusted between 47-280 ℃ through alloy proportion, for example: bi58Sn42The phase transition temperature of (1) is 138 ℃, indium is 156.8 ℃ and lithium is 186 ℃.
The phase-change material can be replaced according to the process requirements, so that the surface temperature of the drying cylinder is always maintained at the phase-change point of the phase-change material, and the surface temperature difference of the drying cylinder can be effectively reduced; for corrosive phase-change materials, the inner cylinder wall and the outer cylinder wall need to be subjected to anticorrosion treatment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a conduction oil dryer with constant temperature of phase transition which characterized in that: the drying cylinder is a cylinder body with two sealed ends, and the cylinder body is a cylinder body structure;
the side walls of the drying cylinder are of a double-layer structure and respectively comprise an inner cylinder wall and an outer cylinder wall, the inner sides of pipe orifices at two ends of the drying cylinder are respectively provided with an oil inlet tank and an oil outlet tank, and the oil inlet tank and the oil outlet tank are connected through a plurality of heat-conducting oil pipes;
a plurality of heat conduction oil pipes are distributed between the inner cylinder wall and the outer cylinder wall, and two ends of each heat conduction oil pipe respectively penetrate through the inner cylinder wall and are respectively connected with the oil inlet groove and the oil outlet groove;
and phase-change materials are filled between the inner cylinder wall and the outer cylinder wall.
2. A thermal oil drying cylinder with constant temperature of phase transition according to claim 1, characterized in that: the two ends of the cylinder body respectively extend out of the oil inlet pipe and the oil outlet pipe, the oil inlet pipe is connected with the oil inlet tank, and the oil outlet pipe is connected with the oil outlet tank.
3. A thermal oil drying cylinder with constant temperature of phase transition according to claim 1, characterized in that: the heat conducting oil pipe between the inner cylinder wall and the outer cylinder wall is spiral, one end of the heat conducting oil pipe is connected with the oil inlet groove, and the other end of the heat conducting oil pipe is connected with the oil outlet groove.
4. A thermal oil drying cylinder with constant temperature of phase transition according to claim 3, characterized in that: the diameter of the oil inlet groove is 20-30% of the diameter of the drying cylinder, the height of the oil inlet groove is 5-10% of the length of the drying cylinder, the diameter of the oil outlet groove is 20-30% of the diameter of the drying cylinder, and the height of the oil outlet groove is 5-10% of the length of the drying cylinder.
5. A thermal oil drying cylinder with constant temperature of phase transition according to claim 1, characterized in that: the diameter of the heat conduction oil pipe is 1-2% of the diameter of the drying cylinder.
6. A thermal oil drying cylinder with constant temperature of phase transition according to claim 1, characterized in that: the distance between the inner cylinder wall and the outer cylinder wall is 2-3% of the diameter of the drying cylinder.
7. A thermal oil drying cylinder with constant temperature of phase transition according to claim 1, characterized in that: the phase-change material is an organic phase-change material or a low-melting-point metal material.
8. The thermal oil drying cylinder with phase-change constant temperature of claim 7, characterized in that: the organic phase change material is methyl fumarate, succinic anhydride, valproic acid, benzoic acid, stilbene, phenacetin or salicylic acid.
9. A thermal oil dryer with phase transition constant temperature according to claim 8, characterized in that: the low-melting-point metal is metal indium, lithium or tin-bismuth alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989125.4A CN110592994A (en) | 2019-10-17 | 2019-10-17 | Heat conduction oil dryer with phase change constant temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989125.4A CN110592994A (en) | 2019-10-17 | 2019-10-17 | Heat conduction oil dryer with phase change constant temperature |
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| Publication Number | Publication Date |
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| CN110592994A true CN110592994A (en) | 2019-12-20 |
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| CN201910989125.4A Pending CN110592994A (en) | 2019-10-17 | 2019-10-17 | Heat conduction oil dryer with phase change constant temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112695558A (en) * | 2021-01-27 | 2021-04-23 | 轻工业杭州机电设计研究院有限公司 | Heat-conducting oil dryer structure |
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|---|---|---|---|---|
| CN112695558A (en) * | 2021-01-27 | 2021-04-23 | 轻工业杭州机电设计研究院有限公司 | Heat-conducting oil dryer structure |
| CN112695558B (en) * | 2021-01-27 | 2023-06-02 | 轻工业杭州机电设计研究院有限公司 | Heat conduction oil dryer structure |
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