JP2017110577A - Heat transition flow pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat transition flow pump device that is configured to efficiently cool or heat a porous material, and whose contour is made small.SOLUTION: Cooling plates 12 and heating plates 14 are alternately laminated, and a porous material 16 is arranged between the cooling plate 12 and the heating plate 14. A single pump 26 formed by the porous material 16 and the cooling plate 12 and heating plate 14 positioned at both ends of the porous material. The respective single pumps 26 are connected in parallel. Temperature difference between the front and rear of the porous material 16 occurs, and then heat transition flow occurs in the porous material 16. Consequently, gas to be handled is suctioned from a suction port 28, and then discharged from a discharge port 30. By arranging the porous material 16 on each of the front and rear of the cooling plate 12 and heating plate 14, surfaces of the cooling plates 12 and heating plate 14 are effectively utilized.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pump device using a thermal transition flow, and more particularly to its structure.

  In a rare gas, when a surface with a temperature gradient exists in the rare gas, a flow from the low temperature part to the high temperature part is induced along this surface. This flow is called a thermal transition flow. Whether a gas is dilute or not is determined by the ratio of the mean free path of gas molecules to the representative length of the system to be handled. Therefore, even in a dense gas such as under atmospheric pressure, Behaves as a dilute gas. When a temperature difference is generated between the front and back surfaces of the porous body, the gas in the porous body flows from a low temperature surface to a high surface. Non-Patent Document 1 below discloses a thermal transition flow pump device using a porous body that induces such a thermal transition flow.

Naveen K. Gupta and Yogesh B. Gianchandani, “Thermal transpiration in zeolites: A mechanism for motionless gas pumps”, APPLIED PHYSICS LETTERS 93, [online], November 14, 2008, American Institute of Phsics, <URL: http: //dx.doi.org/10.1063/1.3025304>

  In the thermal transition flow pump device, a cooler or a heater for generating a temperature difference between the front and back surfaces of the porous body enlarges the outer shape of the device.

  An object of the present invention is to efficiently cool or heat a porous body by effectively using a cooler or a heater, and to reduce the outer shape of the apparatus.

  The thermal transition flow pump device according to the present invention includes a plurality of cooling plates and a plurality of heating plates that are alternately stacked, and is positioned between each of the cooling plates and the heating plate, and defines a first chamber between the cooling plates. And a porous body defining a second chamber with the heating plate. If there is a temperature difference between the first surface facing the cooling plate of the porous body and the second surface facing the heating plate, a thermal transition flow from the first surface to the second surface is generated in the porous body. A suction port leading to the first chamber and a discharge port leading to the second chamber are provided, and gas is sucked into the first chamber from the suction port due to the flow generated by the thermal transition flow, and gas is sucked from the second chamber through the discharge port. Discharged. A single pump is formed by one porous body and a cooling plate and a heating plate adjacent to the porous body. This thermal transition flow pump device has a structure in which single pumps are stacked, and each single pump is connected in parallel. Has been.

  The cooling plate, the heating plate, and the porous body are laminated to form a laminated structure. The suction port can be provided on the first side surface lateral to the stacking direction of the laminated structure, and the discharge port can be provided on the second side surface opposite to the first side surface.

  The cooling plate can be a cooling fluid that cools the cooling plate, and the heating plate can be a heating fluid that warms the heating plate. The cooling fluid and the heating fluid can flow in a direction intersecting with a direction in which the first side surface and the second side surface of the laminated structure are opposed to each other.

  A thermal transition flow pump device is connected to a plurality of suction ports, and a distribution chamber that distributes the handling gas to each suction port, and a collecting chamber that is connected to the plurality of discharge ports and collects the handling gas from each discharge port. You can have it.

  A plurality of thermal transition flow pump devices can be connected in series to form a multistage thermal transition flow pump device. At this time, the collection chamber and the distribution chamber of the adjacent thermal transition flow pump devices connected in series are connected.

  By laminating the cooling plate, the heating plate, and the porous body, the porous body can be disposed on the front and back of the cooling plate and the heating plate, respectively, and the surface areas of the cooling plate and the heating plate can be used effectively. In addition, this makes it possible to reduce the size of the apparatus.

It is sectional drawing which shows schematic structure of the thermal transition flow pump apparatus 10 of this embodiment. It is a figure which shows the cooler. 3 is a cross-sectional view of a cooler 48. FIG. It is a figure which shows the heater 56. FIG. It is a figure which shows the cross section of the heater. It is a figure which shows the state which attached the porous body 16 to the cooler 48. FIG. It is a figure which shows the state which attached the heater 56 to the cooler 48 and the porous body 16 of FIG. It is a figure which shows an example of piping of a cooling fluid and a heating fluid. It is a figure which shows the example of a multistage thermal transition flow pump apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view illustrating a schematic configuration of the thermal transition flow pump device 10. The thermal transition flow pump device 10 has a laminated structure 18 formed by laminating a cooling plate 12, a heating plate 14, and a plate-like porous body 16. The cooling plate 12 and the heating plate 14 are alternately stacked, and the porous body 16 is located between them. Therefore, one surface of the porous body 16 faces the cooling plate 12, and the surface opposite to this surface faces the heating plate 14. The cooling plate 12 and the porous body 16 define a first chamber 20 therebetween. The heating plate 14 and the porous body 16 define a second chamber 22 between them. A gap between the porous body 16 and the cooling plate 12 or the heating plate 14 is sealed with a sealing material 24, and the first chamber 20 and the second chamber 22 are isolated.

  The porous body 16 has a large number of pores communicating with the first chamber 20 and the second chamber 22, and the pore diameter of the pores is a molecule of a gas to be handled (hereinafter referred to as a handling gas). It is formed to be 5 times or less of the mean free path (about 60 to 70 nm under atmospheric pressure), for example, about 60 nm. As the material of the porous body 16, zeolite can be used, and silica airgel in which a large number of pores are formed inside the silicon dioxide material can also be used. In the porous body 16 having the pores, the gas behaves as a rare gas, and when a temperature difference occurs between the front and back of the porous body 16, it is called a thermal transition flow from the lower temperature side to the higher temperature side. A gas flow is generated. One surface of the porous body 16 is cooled by the cooling plate 12 facing this surface, and the surface opposite to this surface is heated by the heating plate 14 facing this surface. Thereby, a temperature difference arises in the surface of the front and back of the porous body 16, and a thermal transition flow generate | occur | produces in a porous body. By this flow, gas is sent from the first chamber 20 through the porous body 16 to the second chamber 22, and one porous body 16, the cooling plate 12 and the heating plate 14 positioned therebetween, form one Functions as a pump. This pump is referred to as a single pump 26. The laminated structure 18 in which the cooling plate 12, the heating plate 14 and the porous body 16 are laminated is also a structure in which the single pump 26 is laminated.

  A suction port 28 is provided corresponding to the first chamber 20, and the single pump 26 sucks the handling gas through the suction port 28. A discharge port 30 is provided corresponding to the second chamber 22, and the single pump 26 discharges the handling gas through the discharge port 30. In this thermal transition flow pump device 10, one suction port 28 is provided for two adjacent single pumps 26, and one discharge port 30 is also provided for two adjacent single pumps 26. Is provided. The suction port 28 is provided on one side surface of the laminated structure 18 that is lateral to the stacking direction, and the discharge port 30 is provided on the side surface opposite to the side surface on which the suction port 28 is provided. . The side surface of the laminated structure 18 provided with the suction port 28 is referred to as a suction side surface 32 and the side surface provided with the discharge port 30 is referred to as a discharge side surface 34.

  The single pumps 26 constituting the laminated structure 18 are connected in parallel, the handling gas is distributed and supplied to the suction ports 28, and the handling gases discharged from the discharge ports 30 are collected.

  A distribution box 36 is disposed opposite to the suction side surface 32 of the laminated structure 18, and a distribution chamber 38 is defined by the distribution box 36 and the suction side surface 32. The suction port 28 of each single pump 26 faces the distribution chamber 38. A suction pipe 40 is connected to the distribution box 36, and the handling gas sent from the suction pipe 40 to the distribution chamber 38 is distributed to each single pump 26 through the suction port 28. A collection box 42 is disposed opposite to the discharge side surface 34 of the laminated structure 18, and a collection chamber 44 is defined by the collection box 42 and the discharge side surface 34. The discharge port 30 of each single pump 26 faces the collecting chamber 44. The handling gas discharged from the discharge port 30 of each single pump 26 gathers in the collecting chamber 44 and is discharged from the discharge pipe 46 connected to the collecting box 42.

  2 and 3 are diagrams showing the configuration of the cooler 48 including the cooling plate 12. 2 is a view of the cooler 48 viewed from the suction side surface 32, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. In the heat transition flow pump device 10, the cooler 48 is constituted by the cooling plate 12. The outer shape of the cooler 48 and the cooling plate 12 is a rectangular (including a square, the same applies hereinafter) plate shape, and an elongated suction port 28 extending along this side is formed on one side of the rectangle. In the cooling plate 12, a suction channel 50 is formed that extends from the suction port 28, branches in the middle, and opens on the front and back of the cooling plate 12. The suction channel 50 has substantially the same cross-sectional shape as the shape of the suction port 28. A cooling fluid passage 52 through which a cooling fluid flows is provided in the cooling plate 12, and the cooling fluid passage 52 is connected to external cooling fluid pipes 54 and 55. A plurality of linear cooling fluid channels 52 may be arranged in parallel, or one or a plurality of cooling fluid channels 52 may be arranged to meander in the cooling plate 12. Alternatively, the inside of the cooling plate 12 may be a cavity, and the cooling fluid may be supplied from the cooling fluid pipe 54 into the cavity and discharged from the cavity to the cooling fluid pipe 55. As the material of the cooling plate 12, a material having good thermal conductivity, for example, a metal, preferably aluminum can be adopted.

  4 and 5 are diagrams showing the configuration of the heater 56 including the heating plate 14. 4 is a view of the heater 56 viewed from the suction side surface 32, and FIG. 5 is a cross-sectional view taken along line BB in FIG. In the heat transition flow pump device 10, the heater 56 includes a heating plate 14 and a peripheral wall 58 provided so as to surround the periphery of the heating plate. The heating plate 14 has a rectangular plate shape, and a discharge port 30 is formed on one side. The discharge port 30 has an elongated shape extending along one side, like the suction port 28 shown in FIG. In the heating plate 14, a discharge channel 60 is formed that extends from the discharge port 30, branches in the middle, and opens on the front and back of the heating plate 14. The discharge channel 60 has substantially the same cross-sectional shape as the shape of the discharge port 30. A heating fluid channel 62 through which heating fluid flows is provided in the heating plate 14, and the heating fluid channel 62 is connected to external heating fluid pipes 64 and 65. The heating fluid channel 62 may be arranged in parallel with a plurality of straight lines, or may be arranged so that one or more meanders in the heating plate 14. Further, the inside of the heating plate 14 may be a cavity, and the heating fluid may be supplied from the heating fluid pipe 64 into the cavity and discharged from the cavity to the heating fluid pipe 65. As the material of the heating plate 14, a material having good thermal conductivity, for example, a metal, preferably aluminum can be adopted. The peripheral wall 58 is provided on both the front and back sides of the heating plate 14, and on each side, together with the heating plate 14, defines a space where one surface is open. The peripheral wall 58 can be made of a highly heat-insulating material such as a resin material. In addition, when the surrounding wall 58 is formed of a highly heat conductive material, the heating plate 14 and the surrounding wall are interposed via a highly heat insulating material such as a resin material in order to suppress heat conduction from the heating plate 14. 58 is preferably connected.

  6 and 7 are explanatory diagrams relating to the assembly of the single pump 26. FIG. 6 is a view showing a state in which the porous body 16 is attached to the cooler 48 (cooling plate 12). The porous body 16 has a rectangular shape that is slightly smaller than the cooling plate 12. The porous body 16 is attached to both the front and back sides of the cooling plate 12 via the sealing material 24. The sealing material 24 is arranged so as to go around the porous body 16 and seals between the porous body 16 and the cooling plate 12 in the entire periphery. The sealing material 24 may be an adhesive. The porous body 16 is attached to the cooling plate 12 with a gap, and this gap becomes the first chamber 20. The suction flow path 50 extending from the suction port 28 opens to the first chamber 20.

  FIG. 7 is a view showing a state where the heater 56 is further attached from the state of FIG. 6. The end face of the peripheral wall 58 of the heater 56 is brought into contact with the cooler 48, and the heater 56 is attached to the cooler 48. The cooling plate 12 and the heating plate 14 have substantially the same shape, and the peripheral wall 58 contacts the peripheral edge of the cooler 48 (cooling plate 12). Further, the joint portion between the peripheral wall 58 and the cooler 48 is sealed with an adhesive or the like. The porous body 16 is accommodated in a space defined by the heating plate 14 and the peripheral wall 58, and is surrounded by the peripheral wall 58. With the heater 56 attached to the cooler 48, a gap is formed between the heating plate 14 and the porous body 16, and this gap becomes the second chamber 22. A discharge channel 60 extending from the discharge port 30 opens to the second chamber 22. The single pump 26 is formed by the porous body 16 and the cooler 48 and the heater 56 located on both sides thereof.

  By laminating a unit composed of one cooler 48 and one heater 56 shown in FIG. 7, the laminated structure 18 shown in FIG. 1 can be formed. However, the cooler 48 located on the uppermost stage has the porous body 16 attached only on the lower side, and the cooler 48 located on the lowermost stage has the porous body 16 attached only on the upper side. As described above, in this thermal transition flow pump device 10, the cooling plate 12 and the heating plate 14 are rectangular, and thus the laminated structure 18 in which these are laminated is a rectangular parallelepiped or a rectangular column. The suction port 28 and the discharge port 30 are respectively provided on two opposite side surfaces of the rectangular parallelepiped stacked structure 18 in the side surfaces with respect to the stacking direction (vertical direction in each drawing). Therefore, the handling gas flows from the suction port 28 to the discharge port 30 and generally flows in a direction orthogonal to the stacking direction. The cooling fluid pipes 54 and 55 are provided on two side surfaces other than the side surface on which the suction port 28 and the discharge port 30 are provided, and the cooling fluid generally flows from one side surface to the other side surface, It flows in a direction perpendicular to the stacking direction and also perpendicular to the flow of the handling gas. The heating fluid pipes 64 and 65 are provided on two side surfaces other than the side surface on which the suction port 28 and the discharge port 30 are provided, and the heating fluid generally flows from one side surface to the other side surface, It flows in a direction perpendicular to the stacking direction and also perpendicular to the flow of the handling gas.

  FIG. 8 is a diagram showing piping for sending a cooling fluid or a heating fluid to each cooler 48 and each heater 56. The laminated structure 18 is shown with the suction side surface 32 provided with the suction port 28 facing the front. A cooling fluid distribution pipe 66 is connected to the cooling fluid pipe 54 on the inlet side, and the cooling fluid is distributed and supplied to each cooler 48. A cooling fluid collecting pipe 68 is connected to the cooling fluid pipe 55 on the outlet side, and the cooling fluid from each cooler 48 is collected. A heating fluid distribution pipe 70 is connected to the heating fluid pipe 64 on the inlet side, and the heating fluid is distributed and supplied to each heater 56. A heating fluid collecting pipe 72 is connected to the heating fluid pipe 65 on the outlet side, and the heating fluid from each heater 56 is collected.

  When a temperature difference is generated between the front and back surfaces of the porous body 16 by the cooling plate 12 and the heating plate 14, the second chamber on the heated surface side is changed from the first chamber 20 on the side cooled in the porous body 16. A thermal transition flow toward 22 is generated. Driven by this heat transition flow, the handling gas is sucked into the first chamber 20 from the suction port 28, and the handling gas in the second chamber 22 is discharged from the discharge port 30. The handling gas sucked from one suction port 28 branches and flows into each of the two first chambers 20 formed on the front and back of the cooling plate 12. In addition, the handling gases in the two second chambers 22 formed on the front and back surfaces of the heating plate 14 merge and are discharged from one discharge port 30.

  FIG. 9 is a diagram showing a multistage heat transition flow pump device 74 in which two heat transition flow pump devices 10 shown in FIG. 1 are connected. The configuration of the two thermal transition flow pump devices 10A and 10B has the same configuration as the thermal transition flow pump device 10 described above. A downstream thermal transition flow pump device 10B is connected to the discharge pipe 46 of the upstream thermal transition flow pump device 10A to form a two-stage configuration. Further, the number of steps may be increased.

  In the heat transition flow pump devices 10, 10 </ b> A, 10 </ b> B, the porous body 16 is disposed on both the front and back surfaces of each cooling plate 12 (excluding the upper and lower cooling plates) and each heating plate 14. Both the front and back surfaces of the plate 12 and the heating plate 14 can be used effectively, and the volume of the apparatus can be reduced.

  The cooling plate, the heating plate, and the porous body are not limited to the rectangular plate shape, and may be other plate shapes such as a polygonal shape and a circular shape. In addition, the cooling plate, the heating plate, and the porous body can have different shapes. For example, the cooling plate and the heating plate can be rectangular, and the porous body can be circular.

  The peripheral wall may be provided not on the heating plate but on the cooling plate, or on one surface of the heating plate and one surface of the cooling plate. The porous body may be attached to the heating plate instead of the cooling plate, or may be attached to the cooling plate and the heating plate one by one.

  The cooling fluid and the heating fluid may be liquid or gas. One may be liquid and the other gas.

  10, 10A, 10B Thermal transition flow pump device, 12 cooling plate, 14 heating plate, 16 porous body, 18 laminated structure, 20 first chamber, 22 second chamber, 24 sealing material, 26 single pump, 28 inlet 30 Discharge port, 32 Suction side surface, 34 Discharge side surface, 36 Distribution box, 38 Distribution chamber, 40 pipe, 42 Collection box, 44 Collection chamber, 46 Discharge pipe, 48 Cooler, 50 Suction flow path, 52 Cooling fluid Flow path, 54, 55 Cooling fluid pipe, 56 Heater, 58 Perimeter wall, 60 Discharge flow path, 62 Heating fluid flow path, 64, 65 Heating fluid pipe, 66 Cooling fluid distribution pipe, 68 Cooling fluid collecting pipe, 70 Heating Fluid distribution pipe, 72 Heating fluid collecting pipe, 74 Multistage heat transition flow pump device.

Claims (5)

A plurality of cooling plates and a plurality of heating plates stacked alternately,
A porous body positioned between each of the cooling plate and the heating plate, defining a first chamber between the cooling plate and a second chamber between the heating plate and facing the cooling plate. A porous body in which a thermal transition flow from the first surface to the second surface occurs in the porous body when there is a temperature difference between the first surface and the second surface facing the heating plate;
A suction port leading to the first chamber;
A discharge port leading to the second chamber;
Have
Each of the porous bodies forms a single pump together with a cooling plate and a heating plate on both sides of the porous body, and each single pump is connected in parallel.
Thermal transition flow pump device.   2. The heat transition flow pump device according to claim 1, wherein a suction port is provided on a first side surface lateral to a stacking direction of a stacked structure in which a cooling plate, a heating plate, and a porous body are stacked. The thermal transition flow pump device is provided with a discharge port on the second side surface opposite to the first side surface.   It is a thermal transition flow pump apparatus of Claim 2, Comprising: A cooling fluid flows in a cooling plate, a heating fluid flows in a heating plate, and a cooling fluid and a heating fluid are the 1st side surface and 2nd of a laminated structure. A thermal transition flow pump device that flows in a direction intersecting the opposite direction of the side surface.   The heat transition flow pump device according to claim 3, wherein the heat transition flow pump device is connected to a plurality of suction ports, and is connected to an intake chamber for distributing a handling gas to the suction ports, and to a plurality of discharge ports. And an exhaust chamber for collecting the handling gas.   A plurality of thermal transition flow pump devices according to claim 4 are provided, an exhaust chamber of one thermal transition flow pump device and a discharge chamber of another thermal transition flow pump device are connected, and a plurality of thermal transition flow pump devices are connected in series Multistage heat transition flow pump device.

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