WO1998021532A1 - Unite d'echange thermique contenant un module thermoelectrique, et systeme de refroidissement thermoelectrique - Google Patents
Unite d'echange thermique contenant un module thermoelectrique, et systeme de refroidissement thermoelectrique Download PDFInfo
- Publication number
- WO1998021532A1 WO1998021532A1 PCT/JP1997/004063 JP9704063W WO9821532A1 WO 1998021532 A1 WO1998021532 A1 WO 1998021532A1 JP 9704063 W JP9704063 W JP 9704063W WO 9821532 A1 WO9821532 A1 WO 9821532A1
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- WIPO (PCT)
- Prior art keywords
- heat transfer
- transfer surface
- thermoelectric module
- heat
- exchange unit
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
Definitions
- thermoelectric module Description Heat exchange unit with built-in thermoelectric module and thermoelectric cooling system
- the present invention relates to a heat exchange unit incorporating a thermoelectric module and a cooling system employed in a thermoelectric module type electric refrigerator or the like.
- thermoelectric module is what is known as a Peltier module or a thermoelectric heat module, has two heat transfer surfaces, and heat is applied to one of the heat transfer surfaces while the other is heated. This is a member that has the function of cooling the heat transfer surface.
- thermoelectric module A cooling device using a thermoelectric module is disclosed, for example, in Japanese Patent Publication No. Hei 6-504463.
- thermoelectric module is built in a heat exchange unit, and two cavities are formed in the heat exchange unit with the thermoelectric module interposed therebetween. ing.
- the cavity facing the heating-side heat transfer surface of the heat exchange unit is connected to a closed circuit composed of a heat exchanger and a pump, and the cavity facing the other cooling-side heat transfer surface is likewise connected. It is connected to a closed circuit consisting of a heat exchanger and a pump.
- the thermoelectric module A circulation circuit including a heat transfer surface on the heating side of the cooling tool and a circulation circuit including a cooling surface are formed, and the heat medium is circulated through the circuit. Then, the desired cooling is performed by the heat exchanger of the circuit on the cooling side of the two circulation circuits.
- thermoelectric module The invention disclosed in the above prior art is a technology that can perform practical cooling using a thermoelectric module.
- this prior art merely discloses a basic configuration of a cooling device, and in order to actually apply the present invention to an electric refrigerator or the like, it is necessary to improve or to solve a new problem. The problems are piled up.
- the present invention proposes an improved technique for the heat exchange unit in particular among such problems.
- the heat exchange unit having a built-in thermoelectric module with improved productivity, maintenance and component interchangeability is provided. And a thermoelectric cooling system. Disclosure of the invention
- a heat exchange unit incorporating a thermoelectric module of the present invention has at least two heat transfer surfaces, and when a current flows, one of the heat transfer surfaces is heated and the other heat transfer surface is heated.
- a thermoelectric module whose hot surface is cooled; and a sur member that covers at least one heat transfer surface of the thermoelectric module and forms a heat medium passing cavity between the heat transfer surface and the heat member. It is characterized by being transparent or translucent.
- the shell member is transparent or translucent, the flow state of the heat medium inside can be observed from the outside.
- thermoelectric module In a cooling device using a thermoelectric module, the heat transfer surface of the thermoelectric module and the heat Heat exchange takes place directly with the medium. Therefore, in a cooling device using a thermoelectric module, the cooling capacity greatly depends on whether the flow of the heat medium in the heat exchange unit is smooth or not. In particular, air entrapment in the heat exchange unit must be strictly prevented.
- thermoelectric module when incorporating a cooling device using a thermoelectric module into a refrigerator or the like, it is necessary to check whether air is trapped in the heat exchange unit. However, it was difficult to confirm that no air was trapped in the heat exchange unit with the conventional technology. For this reason, assembling the refrigerator and injecting the heat transfer medium was tricky, and the workability of assembling was poor.
- the transparent or translucent shell member since the transparent or translucent shell member is employed, the flow condition of the internal heat medium can be observed from the outside. Therefore, after assembling the heat exchange unit into the refrigerator, it is possible to confirm that no air is trapped in the heat exchange unit. Workability of assembling to a refrigerator etc. is improved.
- thermoelectric module when performing maintenance and inspection of refrigerators, there is a strong demand to check whether air is trapped in the heat exchange unit.
- the cooling device using the thermoelectric module has a very simple structure, and the number of failure points is limited. It is expected that most of the three failure factors are failure of the pump that circulates the heat medium, leakage of the heat medium, and clogging of foreign matter in the heat exchange unit.
- the flow of the heat medium in the heat exchange unit can be observed, so that the cause of the failure can be easily determined. That is, if the heat medium is not circulating in the heat exchange unit, a failure of the pump is suspected. If air bubbles are observed in the heat exchange unit, leakage of the heat medium is suspected, and the heat exchange unit is suspected. If the heat medium is partially stagnant in the heat exchanger, it is suspected that foreign matter is clogged in the heat exchange unit.
- the heat exchange unit in the form of heat according to the present invention has a heat transfer surface on the heating side and a heat transfer surface on the cooling side, and the heat transfer surface on the heating side is heated by passing an electric current, so that the heat transfer surface on the cooling side
- a thermoelectric module to be cooled a shell member that covers a heating-side heat transfer surface of the thermoelectric module and forms a heat medium passing cavity between the heat transfer surface and the heat transfer surface, and a heat transfer surface on a cooling side of the thermoelectric module.
- a cooling plate in contact with the cooling plate, and a cooling object can be placed on the cooling plate.
- a heat medium such as water is passed through the heat medium passage cavity, and the heat medium removes heat from the heating-side heat transfer surface. Then, the temperature of the heat transfer surface on the cooling side is reduced, the temperature of the cooling plate is reduced, and the cooling object can be directly cooled through the cooling plate.
- the cooling plate has a structure that can be replaced with a shell member, and the cooling plate is replaced with a shell member, so that the heat medium passage cavity in contact with the heating-side heat transfer surface and the heat medium passage cavity in contact with the cooling-side heat transfer surface are reduced.
- the heating-side heat transfer surface can be covered, and a common member can be used for the shroud member, and the interchangeability of parts is high.
- a heat exchange unit includes a thermoelectric module having at least two heat transfer surfaces, wherein one of the heat transfer surfaces is heated by flowing an electric current, and the other is cooled.
- a shell member that covers at least one heat transfer surface of the thermoelectric module and forms a heat medium passage cavity between the heat transfer surface and the heat transfer surface; and the shell member has a lead wire through hole that penetrates to the outside.
- An elastic sealing material provided with a through hole in the center is disposed in the lead wire through hole, and the lead wire of the thermoelectric module is passed through the through hole of the elastic sealing material and out of the shell member. The elastic sealing material is drawn out and is in a compressed state when the lead wire is inserted, and the elastic sealing material compresses the lead wire insertion hole and the lead wire.
- thermoelectric module It is important for heat exchange units with built-in thermoelectric modules to prevent heat medium leakage.
- the lead wire of the thermoelectric module had to be drawn out of the shell member, and it was difficult to liquid seal the lead wire drawing portion.
- the lead wire is compressed and held by the elastic seal material, and the elastic seal material also compresses the lead wire through-hole, so that there is no leakage of the heat medium from the lead wire lead-out portion. . Therefore, the frequency of maintenance and inspection can be reduced.
- a heat exchange unit includes a thermoelectric module having at least two heat transfer surfaces, wherein one of the heat transfer surfaces is heated by passing an electric current, and the other heat transfer surface is cooled;
- a shell member covers at least one heat transfer surface of the thermoelectric module and forms a heat medium passage cavity between the heat transfer surface and the heat transfer surface.
- a cavity is formed on the back side of the heat medium passage cavity of the shell member. It is characterized by being provided integrally.
- Heat exchange units with built-in thermoelectric modules need to be thermally cut to prevent heat dissipation. Therefore, in the prior art, after incorporating the heat exchange unit into a refrigerator or the like, glass wool or the like is wrapped around the heat exchange unit to prevent the heat from being dissipated from the heat exchange unit. However, the operation of winding such a glass bottle or the like around the heat exchange unit is a labor-intensive operation and requires skill. Also disassemble the heat exchange unit during maintenance. According to the present invention, there is provided a heat exchange unit that does not require heat insulation treatment, is easy to assemble into a refrigerator, and is easy to perform maintenance inspection. can do.
- the cavity integrally formed on the back side of the heat medium passage cavity of the shell member functions as a heat insulating layer. Therefore, the shell member and the heat-insulating layer are integrated, making it easy to assemble into a refrigerator or to perform maintenance and inspection.
- the heat insulating effect can be further improved.
- the present invention also provides a thermoelectric module having a plurality of blocks, each block having at least two heat transfer surfaces, wherein one heat transfer surface is heated and the other heat transfer surface is cooled by passing an electric current.
- a shell member that covers at least one heat transfer surface of the thermoelectric module and forms a heat medium passage cavity between the heat transfer surface and the shell member; the shell member includes a tubular connection portion;
- An object of the present invention is to provide a heat exchange unit assembly incorporating a thermoelectric module, wherein a series of flow paths are formed by connecting a plurality of blocks by fitting each other.
- thermoelectric modules Conventional heat exchange units with built-in thermoelectric modules have a fixed heat exchange capacity and need to be individually designed according to the capacity of refrigerators and the like. Further, according to the conventional technology, it is necessary to manufacture a thermoelectric module to be individually sized according to the capacity of a refrigerator or the like. As a result, there was a problem that the compatibility of the parts was poor, and manufacturing and maintenance were difficult.
- the present invention has developed a heat exchange unit that can respond to refrigerators and the like of various capacities, and has improved the interchangeability of parts. That is, the heat exchange unit of the present invention is in the form of a block, and a series of flow passages is formed by fitting the connecting portions of each block. Therefore, by changing the number of blocks to be connected, The capacity can be changed.
- a heat exchange unit assembly according to another aspect of the present invention includes a plurality of blocks, each block having at least two heat transfer surfaces, and an electric current is applied to heat one of the heat transfer surfaces so that the other heat transfer surface is heated.
- thermoelectric module that cools a hot surface; and a seal member that covers at least one heat transfer surface of the thermoelectric module and forms a heat medium passage cavity between the heat transfer surface and the thermoelectric module.
- a connector electrically connected to the module is provided, and each block is electrically connected via the connector. When the heat exchange unit is divided into blocks, it is desirable to connect each thermoelectric module electrically in series.
- thermoelectric module since the connector electrically connected to the thermoelectric module is provided on the shell member, the electrical connection is easily performed by connecting the connectors of the adjacent blocks. It can be easily installed in refrigerators and maintenance and inspection.
- a series of flow paths can be formed by connecting the connecting portions and connecting the blocks.
- each block has at least two heat transfer surfaces, and a current is applied to heat one heat transfer surface and cool the other heat transfer surface.
- the flow path resistance Pile is small.
- the cooling capacity is completely lost when one heat exchange unit is blocked, but when connected in parallel, there is an advantage that some cooling power can be secured. . Therefore, the heat exchange unit assembly of the present invention has an effect that a certain amount of time can be taken for maintenance, and maintenance and inspection are facilitated.
- the present invention also provides a thermoelectric cooling system in which a heat exchanger for cooling an object to be cooled, a pump for circulating a heat medium, and a first heat exchange unit including a first thermoelectric module are connected in a ring shape.
- a shell member that covers a heating-side heat transfer surface of the second thermoelectric module and forms a heat medium passage cavity between the heat transfer surface and the shell member, and cools the second thermoelectric module.
- a second heat exchange unit having a cooling plate in contact with the heat transfer surface on the side, and a part having a low temperature is partially provided in the object to be cooled by the cooling plate.
- thermoelectric cooling system cools an object to be cooled simply by performing heat exchange using a thermoelectric module, and it has been difficult to further lower the temperature of a specific portion of the object to be cooled. Therefore, an electric refrigerator employing such a thermoelectric cooling system could not reduce the temperature in the refrigerator to the point where ice could be produced, and could not produce ice.
- thermoelectric cooling system of this invention can improve the cooling capacity and ice-making capacity of a thermoelectric modular electric refrigerator. That is, as in a normal refrigerator, the inside of the refrigerator is cooled by the heat exchanger, but at the same time, the heating-side heat transfer surface of the thermoelectric module is cooled by the heat medium flowing through the heat exchanger. Therefore, the heat transfer surface on the cooling side of the thermoelectric module is even lower than the surface temperature of the heat exchanger that cools the inside of the cabinet, and a part having a low temperature can be provided in the cabinet.
- FIG. 1 is a refrigeration system diagram i of an electric refrigerator employing a thermoelectric cooling system according to the present invention.
- FIG. 2 is a perspective view of the refrigerator of FIG.
- FIG. 3 is a longitudinal sectional view of the refrigerator of FIG.
- FIG. 4 is a rear view of the refrigerator of FIG. 2 with a rear plate removed.
- FIG. 5 is an exploded perspective view of a heat exchange unit assembly including a thermoelectric module provided in the refrigerator of FIG.
- FIG. 6 is a sectional view taken along line AA of FIG.
- FIG. 7 is a plan view of the inside of the heat exchange unit assembly of FIG.
- FIG. 8 is an exploded perspective view of the heat exchange unit constituting the heat exchange unit assembly of FIG.
- FIG. 9 is a perspective view of the turbulence set in the heat exchange unit of FIG.
- FIG. 10 is a partially enlarged perspective view of the turbile of FIG. 9.
- FIG. 11 is a partially enlarged cross-sectional view of the heat exchange unit of FIG.
- FIG. 12A is an enlarged cross-sectional view illustrating a lead wire leading-out procedure of a lead wire leading-out portion of the heat exchange unit in FIG.
- FIG. 12B is an enlarged cross-sectional view showing a state after a lead wire is led out of a lead wire lead-out portion of the heat exchange unit of FIG.
- FIG. 13A is a perspective view showing a joint portion between the heat exchange units.
- FIG. 13B is a perspective view showing another form of the joint between the heat exchange units.
- FIG. 14 is a cross-sectional view showing the connection structure of the pipe portions of the heat exchange unit.
- Fig. 15 is a cross-sectional view of the heat exchange unit used for the ice making part.
- FIG. 16 is an exploded perspective view of the heat exchange unit of FIG.
- FIG. 17 is a plan view of a heat exchange unit assembly according to another embodiment.
- FIG. 18 is a cross-sectional view of a connector provided in the heat exchange unit assembly of FIG.
- FIG. 19 is a sectional view of a heat exchange unit according to another embodiment.
- FIG. 20 is a block diagram showing a different embodiment of the connection form of the heat exchange unit. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a refrigeration system diagram of an electric refrigerator 30 employing a thermoelectric cooling system according to the present invention.
- the electric refrigerator 30 has a hot-side piping circuit 2 and a cold-side piping circuit 3 via a heat exchange unit assembly 1 containing a thermoelectric module.
- Heat medium circulates inside and. It is desirable to add an antifreeze such as propylene glycol to the piping circuit 3 on the cold side in order to prevent freezing.
- an antifreeze such as propylene glycol
- As the heat medium it is preferable to use a medium containing water because of its high specific heat, but it is needless to say that another liquid may be used.
- Each of the heat exchange units constituting the heat exchange unit assembly 1 has a built-in thermoelectric module 5 composed of a Peltier element as described later, and is disposed inside the heat exchange unit with the thermoelectric module 5 interposed therebetween. Two cavities 7 and 8 are formed.
- the hot-side piping circuit 2 has a heat exchanger 10 and a pump 11 and forms a closed circuit including the cavity 7 described above.
- the cold side piping circuit 3 also has a heat exchanger 15 and a pump 16 as in the case of the hot side, and constitutes a closed circuit including the cavity 8 described above. I have. However, the piping circuit 3 on the cold side is provided with a bypass pipe 17 from the downstream side of the heat exchanger 15 and connected to a heat exchange unit 18 for ice making. In addition, fans 21 and 22 send air to heat exchangers 10 and 15 of each circuit.
- the appearance of the refrigerator 30 is as shown in FIG. 2, and there is not much difference from the known one. That is, it has a box-shaped main body 31, and a door 32 is provided on the front surface thereof.
- the main body 31 and the door 32 of the refrigerator are provided with heat insulating materials 35 and 36 (see FIG. 3) in the same manner as the known refrigerator, and a closed space storage 33 is formed.
- the piping of the refrigeration system described above is disposed at appropriate positions inside and outside the heat insulating materials 35 and 36.
- the heat exchange unit 1 which is the center of the refrigeration system, is located outside the refrigerator 3 (Left and right sides are viewed from the door side).
- the above-mentioned hot-side piping circuit 2 is located outside the refrigerators 30 and 36, and is concentrated on the rear side of the refrigerator 30.
- the pump 11 and the heat exchanger 10 Both are located near the center of the lower part on the back side.
- the heat exchange unit assembly 1, the pump 11 and the heat exchanger 10 are connected in a ring by pipes 37, 38 and 39.
- the heat exchanger 15 is arranged at the center in the back in the storage 33.
- the pump 11 is disposed at the upper right corner in the back of the storage 33.
- a shelf 41 is provided in the refrigerator 33, and a heat exchange unit 18 for ice making is built in the shelf 41.
- the upper side of the shelf 41 functions as an ice making room 40.
- the characteristic configuration of the refrigerator 30 of the present embodiment is the structure of the heat exchange unit 1 and the heat exchange unit 18 for ice making. Hereinafter, these structures will be mainly described.
- the heat exchange unit assembly 1 which is the center of the refrigeration system, will be described.
- the heat exchange unit assembly 1 used in this embodiment has a triple structure in which one block is provided for each block and three blocks are connected to each other. are doing. That is, the heat exchange unit assembly 1 employed in the present embodiment is formed by connecting heat exchange units 50, 51, and 52 each containing a thermoelectric module 5 in series. These three heat exchange units 50, 51, 52 have exactly the same shape and structure at both ends.
- the central heat exchange unit 51 the basic structure is not much different from that at both ends, but the male and female structure of the piping and the connection are different.
- the structure of the heat exchange unit 50 is as follows.
- the heat exchange unit 50 is composed of a lower shell 53, an upper shell 54, two turbulators 55, and a thermoelectric module 5, as shown in FIGS.
- the outer appearance of the lower shell 53 has a shape in which two ridges are provided in parallel.
- the inside of the ridge is a cavity, and the cavity forms two rows of channels 57 and 58. That is, the channels 57 and 58 are provided on both sides inside the lower shell 53 in parallel along the continuous direction of the blocks, and have a circular cross section.
- the flow paths 57 and 58 are formed continuously from one end to the other end of the block of the lower seal 53 in the continuous direction.
- One end of each of the two flow paths 57 and 58 is closed, and the other end is a male connection.
- the hand is continuous with 60. Specifically, in the flow path 57 on the right side of FIG. 6, the back side of the drawing is continuous with the male fitting 60 and the front side is closed. On the other hand, the flow path 58 on the left side of FIG. 6 is closed at the back side of the drawing, and the front side is continuous with the male fitting 60. That is, the closed side and the male fitting 60 are different between the flow paths
- the male fitting 60 is a protruding pipe as shown in Figs. 5, 8, and 14, and has an O-ring 61 on the outer periphery near the tip.
- the channels 57 and 58 are connected by a wall 62 (FIG. 6). Flanges 63 are provided outside the channels 57 and 58.
- the above-mentioned wall portion 62 forms a heat medium passage cavity between the wall portion 62 and the thermoelectric module 5, and is located deeper than the flange portion 63.
- the flange portion 63 has four through holes 65 for screw passage.
- the flange portion 63 of the lower shoe 53 has two lead wire outlet holes 67 described later (see FIG. 6).
- the upper shell 54 has substantially the same structure as the lower shell 53 described above, has an outer shape of two ridges, and has two rows of flow passages 70 and 71 formed therein. ing. One of the flow paths 70 and 71 is closed, and the other is provided with a male pipe joint 60 and communicates with the outside.
- the channels 70 and 71 are connected by a wall 74, and the wall 74 is deeper than the flange 72.
- the closed sides of the flow paths 70 and 71 and the male fitting 60 are provided at alternate positions with the upper shell 54 facing the lower shell 53. .
- a boss portion 64 is provided on the flange portion 72 of the upper seal 54, and a screw hole 75 is provided on the boss portion 64.
- Male connecting portions 68 are provided at both ends of the upper shell 54. As shown in FIGS. 8 and 13A, the male connecting portion 68 is provided with a pin 73 provided on a plate protruding in parallel with the upper shell 54.
- the upper shell 54 has no portion corresponding to the lead wire drawing hole 67.
- the lower shell 53 and the upper shell 54 are formed by a known method such as injection molding of a thermoplastic resin. It should be noted that both the lower shell 53 and the upper shell 54 are transparent. Or it is translucent.
- the material of the lower shell 53 and the upper shell 54 is not particularly limited as long as it is transparent or translucent.
- the turbulator 55 has a plate shape as shown in FIG. 9, and has two legs 77 for positioning on one surface (the lower part of the drawing).
- a number of walls 78 forming a flow path are provided on the other side (upper part of the drawing) of the Tavile Night 55.
- the walls 78 are provided continuously from one end to the other end of the television 55, and the walls 78 are parallel and equally spaced.
- a parallel groove-shaped flow path 84 is formed by the wall 78.
- the turbulator 55 used in the present embodiment has an obstacle in the flow path 84.
- the obstacles are, specifically, ridges 82 and baffles 79.
- the ridge 82 is lower in height than the wall 78 described above, and extends continuously in the vertical direction with respect to the wall 78.
- the ridges 82 are provided in two rows.
- the baffle 79 is the same height as the wall 78 but is discontinuous.
- the baffle plate 79 does not completely block the flow path 84, and there is a gap in the width direction of the flow path 84.
- a single baffle 79 is provided at a certain center in the longitudinal direction of a certain wall 78, and two places are provided at a portion from an end of the wall 78 adjacent to the wall 78. Therefore, the baffle plates 79 are provided in a staggered manner with respect to the groove-shaped flow paths 84.
- the above-mentioned ridges 82 are located between the baffle plates 78.
- the turbulator 55 is molded by a known method such as injection molding of a thermoplastic resin, and the molding method is not specified.
- the turbulator 55 is also formed by the lower seal 53 and the upper seal. It is transparent or translucent like Seal 54.
- the same material as the lower shell 53 and the upper shell 54 can be used as the material of the turbulator 55, and it is particularly preferable to use a transparent or translucent polyolefin resin.
- thermoelectric module 5 uses a known Peltier element, and is provided with a P-type semiconductor and an N-type semiconductor side by side.
- the outer shape of the thermoelectric module 5 is plate-shaped, and both surfaces function as heat transfer surfaces 80 and 81 o
- the heat exchange unit 50 has a thermoelectric module 5 disposed at the center thereof. And, on both sides of the thermoelectric module 5, there are 55 turbiles. Further, a lower shell 53 and an upper shell 54 are provided outside the turbulator 55, and the lower shell 53 and the upper shell 54 are integrally connected by screws 89. The positional relationship between the lower shell 53 and the upper shell 54 and the turbulence 55 is such that the turbulator 55 is located on the walls 62 and 74 of the lower seal 53 and the upper seal 54 as shown in FIG. The legs 77 are fitted with the side surfaces of the flow paths 57 and 58 or the flow paths 70 and 71.
- the wall 78 of the turbine 55 extends in a direction perpendicular to the channels 70, 71. Therefore, the channels 70 and 71 are connected all over by the groove-shaped channel formed by the wall 78.
- the wall 78 of the turbulator 55 is in contact with the heat transfer surface 80 or 81 of the thermoelectric module 5. Therefore, a heat medium passage cavity is formed between the surface of the turbulence 55 and the heat transfer surface 80 or 81 of the thermoelectric module 5.
- annular sealing members 85 and 86 as shown in FIGS.
- a heat medium is prevented from leaking from the heat medium passage cavity.
- Another annular sealing member 87 is interposed between the lower shell 53 and the upper shell 54 outside the sealing members 85 and 86, and the heat exchange unit 50 is provided. Leakage of the heat medium from the whole is prevented. That is, in the present embodiment, the liquid sealing is performed in a double manner by the seal members 85 and 86 and the seal member 87.
- the lead wire 90 of the thermoelectric module 5 is a single wire, and is drawn out from the lead wire drawing hole 67.
- the structure of this part is as shown in Fig. 12A. That is, the lead wire drawing hole 67 is provided with a step from the inside of the lower shell 53 to the outside, the inside diameter of the inside of the lower shell 53 is large, and the inside diameter of the part penetrating outside is small. .
- a seal member 92 made of an elastic material such as rubber is inserted into a portion having a large inner diameter inside the lead wire drawing hole 67.
- the elastic seal member 92 has a cylindrical shape, and has a through hole 93 at the center.
- Seal member 9 2 Has an outer diameter substantially equal to the inner diameter of the inside of the lead wire drawing hole 67 in a natural state.
- the inner diameter of the through hole 93 of the sealing member 92 is smaller than that of the lead wire 90.
- the lead wire 90 is pushed into the through hole 93 after the sealing member 92 is inserted into the lead wire drawing hole 67.
- the elastic seal member 92 expands in diameter and has a compressive stress therein, thereby compressing the lead wire outlet hole 67 and coming into close contact with the inside thereof.
- the space between the elastic seal member 92 and the lead wire 90 is also tightly compressed.
- the male fittings 60 and the connecting portions 68 were both male, whereas the intermediate heat exchange units 51 were all Female type.
- the female pipe joint part 98 protrudes from the lower shell 53 and the upper shell 54 of the heat exchange unit 51 in the middle part.
- the female pipe joint part 98 is tubular as shown in FIG. 14, and has an inner diameter substantially equal to the outer diameter of the male pipe joint part 60 of the heat exchange unit 50 described above.
- a female connecting portion 100 is provided on a lower seal 53 of the heat exchange unit 51 in the middle. As shown in FIGS. 8 and 13A, the female connecting portion 100 is provided with a hole 102 in a plate portion 101 protruding in parallel with the lower shell 53.
- the heat exchange units 50, 51, and 52 of the present embodiment are connected in series as described above. Connected to the state. More specifically, between the heat exchange units 50 and 51 and between the heat exchange units 51 and 52, the pins 73 of the male connection portion 68 are connected to the female connection portion 100. The heat exchange units 50, 51, and 52 are integrated into the holes 102. In addition, the male fitting 60 and the female fitting 98 fit between the heat exchange units 51 and 52 and between the heat exchange units 51 and 52, and the heat exchange unit The heat medium passage cavities formed by the lower shells 53 of the nits 50, 51, 52 are connected in series. Furthermore, the heat medium passage cavities formed by the upper shells 54 of the heat exchange units 50, 51, 52 are also connected in series in the same manner.
- the male pipe joint 60 of the lower shell 53 of the heat exchange unit 50 and the male pipe joint 60 of the lower shell 53 of the heat exchange unit 52 are arranged on the hot side. Connected to 2. Also, the male fitting 60 of the upper shell 54 of the heat exchange unit 50 and the male fitting 60 of the upper shell 54 of the heat exchange unit 52 are connected to the piping circuit 3 on the cold side. Connected.
- the heat medium flows from the male pipe joint 60 of the upper shell 54 of the heat exchange unit 50 to the right side in the heat exchange unit 50 as shown by the arrow in FIG. It enters the channel 70 and flows into the left channel 71 through the space between the surface of the turbulator 55 as a heat medium passing cavity and the heat transfer surface 81 of the thermoelectric module 5.
- a groove-shaped flow path 84 is formed in the turbulence 55, and an obstacle such as a ridge 82 or a baffle plate 79 is provided in the flow path. Hits these obstacles, is blocked by the groove-shaped flow path, loses its escape in the width direction, and generates a flow in a direction directly contacting the thermoelectric module 5. Therefore, the heat medium strikes the heat transfer surface 81 of the thermoelectric module 5 in the vertical direction, and heat is efficiently exchanged.
- the heat medium flowing into the left channel from the table 55 flows from the hand part 60 toward the heat exchange unit 51, and flows from the female pipe joint part 98 of the heat exchange unit 51 into the flow path 71 on the left side of the heat exchange unit 51. After that, it is the same as above, flows into the right flow path 70 through the heat medium passage cavity, and the female pipe joint part 98 of the heat exchange unit 51 and the female pipe part of the heat exchange unit 52 It flows into the heat exchange unit 52 via the joint 60 and exits from the female pipe joint 60 on the opposite side.
- the flow of the heat medium in the hot-side piping circuit 2 is the same as that of the cold-side piping circuit 3, and a description thereof will be omitted.
- thermoelectric module 5 since the lower shell 53, the upper shell 54, and the turbulator 55 are transparent or translucent, the heat transfer surfaces 80, 81 of the thermoelectric module 5 are directly applied from the outside. You can see it. Therefore, the state of the flow of the heat medium described above can be easily understood from the outside, and it is possible to determine at a glance whether air is mixed in or the foreign matter is clogged.
- the heat exchange unit 18 for making ice can be said to be the above-described heat exchange unit 50 in which the upper shell 54 of the heat exchange unit 50 is replaced with a cooling plate 110.
- the cooling plate 110 is a metal plate excellent in heat conduction such as aluminum, and has a hole at a position corresponding to the screw hole 75 of the upper shell 54 described above. 1 1 1 is provided.
- the cooling plate 110 is screwed to the upper shell 54, and the rear surface of the cooling plate 110 is directly connected to the heat transfer surface on the cooling side of the thermoelectric module. 8 1 is in contact.
- an annular seal member 87 is interposed between the upper shell 54 and the cooling plate 110 so that the heat medium from the entire heat exchange unit 50 is removed. Leaks are prevented.
- the heat medium cooled from the bypass pipe 17 flows into the heat medium passage cavity of the heat exchange unit 18 for ice making. Therefore, in the thermoelectric module 5 in the heat exchange unit 18 for ice making, the heat transfer surface 80 on the heating side is cooled by this heat medium, and the heat transfer surface 81 on the opposite side further cools. It becomes low temperature.
- the configuration described below desirably has a transparent or translucent shell, but is applicable even when the shell is not transparent or translucent.
- the connecting member has shown a fitting structure of the pin 73 and the hole 102, but a hook other than that shown in FIG. It is also possible to use the fitting of 1 19.
- the lead wire 90 of the thermoelectric module 5 was directly drawn out to the outside through the lead wire lead hole 67, but the lower shell 53 and the upper shell 54 connected to the connector 1 1 18 , 120, and can be drawn out through these connectors 118, 120 (see FIGS. 17 and 18).
- the thermoelectric modules 5 be connected in series. It is desirable to directly provide female connectors 118 and 120 and directly connect these connectors.
- connection distance between the male connection part 68 and the female connection part 100, the connection distance between the male fitting part 60 and the female pipe hand part 98, and the connection distance between the connectors 118, 120 If the connection intervals are the same, the mechanical connection, the pipe connection and the electrical connection of the heat exchange unit can be performed in one operation, and the assembly workability is further improved.
- FIGS. 17 and 18 show a configuration in which a male or female connector is directly provided on the lower shell 53 and the connectors are directly connected to each other.
- each heat exchange unit 50, 51, 52 is provided with a connector 118, 120. More specifically, the heat exchange units 50, 52 at both ends are provided with male connectors 118 at both ends, and the middle heat exchange unit 51 is provided with a female connector 120. Is provided.
- Each of the heat exchange units 50, 51, 52 has a connector 118, 120 connected to one lead wire 90 of the thermoelectric module 5. The connectors 118 and 120 are connected to adjacent heat exchange units, respectively.
- the heat exchange unit 130 shown in FIG. 19 is intended to improve heat insulation. That is, the heat exchange unit 130 needs to insulate either the lower shell 53 or the upper shell 54. Specifically, when the heat exchange unit is placed outside the refrigerator as in the previous embodiment, it is necessary to wrap the heat insulating material around the cooling side shroud so that the cool air does not leak outside. . Conversely, when disposing the heat exchange unit in the refrigerator, heat insulating material should be wrapped around the shell on the heating side so that hot air does not fill the refrigerator.
- the heat exchange unit 130 shown in FIG. 19 employs a shell 1331 integrally provided with a hollow portion 132 serving as a heat insulating layer on the back side.
- the substantially closed cavity portion 132 is provided on the back surface of the flange portion 63, the uneven portion, and the wall portion 62.
- the method of forming the shell 1311 is not particularly limited, but, for example, if it is manufactured by blow molding, the substantially closed cavity 1332 can be easily formed.
- the hollow part 132 can be expected to have a considerable heat insulating effect even when it is empty, a higher heat insulating effect can be obtained by injecting foamed polyurethane or the like into the relevant part. Can be done.
- the hollow portion 132 is provided only on the back surface of one shell 131, but it is a matter of course that the hollow portion may be provided on the back surface of both shells.
- the heat exchange unit assembly described above has been described as an example of a three-unit configuration, but it is needless to say that two or less units or four or more units may be used.
- the heat exchange unit assembly of the present embodiment can increase or decrease the number of connected heat exchange units according to the capacity of the refrigerator, so that it can be applied to refrigerators of all capacities and has a high component compatibility. There is.
- the heat exchange units are connected in series.
- the heat exchange units can be used in parallel.
- FIG. 20 shows an example in which heat exchange units are used in parallel.
- the heat exchange unit 50 and the heat exchange unit 51 are connected in series as a set, and these are connected in parallel with each other.
- An advantage of connecting the heat exchange units in parallel is that the flow path resistance is reduced. When heat exchange units are connected in series, if one heat exchange unit is clogged, the cooling capacity is completely lost.However, when they are connected in parallel, there is an advantage that a certain amount of cooling power can be secured. is there. This has the effect of saving some time for maintenance, making maintenance and inspection easier.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU48858/97A AU713493B2 (en) | 1996-11-08 | 1997-11-07 | Heat-exchanger unit with built-in thermoelectric module and thermoelectric refrigerating system |
EP97911485A EP0949464A4 (en) | 1996-11-08 | 1997-11-07 | HEAT EXCHANGE UNIT CONTAINING THERMOELECTRIC MODULE, AND THERMOELECTRIC COOLING SYSTEM |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29674996 | 1996-11-08 | ||
JP8/296749 | 1996-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998021532A1 true WO1998021532A1 (fr) | 1998-05-22 |
Family
ID=17837622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/004063 WO1998021532A1 (fr) | 1996-11-08 | 1997-11-07 | Unite d'echange thermique contenant un module thermoelectrique, et systeme de refroidissement thermoelectrique |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0949464A4 (ja) |
KR (1) | KR20000053170A (ja) |
CN (1) | CN1236428A (ja) |
AU (1) | AU713493B2 (ja) |
TW (1) | TW357251B (ja) |
WO (1) | WO1998021532A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1517636A (zh) * | 2003-01-13 | 2004-08-04 | 王清华 | 一种温差半导体循环冷却装置 |
JP2011035305A (ja) * | 2009-08-05 | 2011-02-17 | Toyota Industries Corp | 熱交換器 |
CN104329832B (zh) * | 2014-03-28 | 2017-04-26 | 海尔集团公司 | 热交换装置及具有该热交换装置的半导体冰箱 |
FR3033084B1 (fr) * | 2015-02-23 | 2018-04-27 | Valeo Systemes Thermiques | Dispositif thermo electrique, notamment destine a generer un courant electrique dans un vehicule automobile, comprenant un raccord hydraulique |
KR102082243B1 (ko) * | 2019-07-22 | 2020-02-27 | 주식회사 성하에너지 | 열전소자 열교환 모듈 |
CN115164445B (zh) * | 2022-07-15 | 2023-10-24 | 中国电子科技集团公司第十研究所 | 一种半导体热电制冷器结构及强化换热方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06504361A (ja) | 1991-01-15 | 1994-05-19 | ハイドロクール・プロプライエタリー・リミテッド | 熱電システム |
JPH0712421A (ja) * | 1993-06-25 | 1995-01-17 | Toyo Radiator Co Ltd | 冷却装置 |
JPH07234036A (ja) * | 1994-02-25 | 1995-09-05 | Aisin Seiki Co Ltd | 熱電変換素子の吸・発熱量可変装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3032498A1 (de) * | 1980-08-28 | 1982-04-01 | Fritz 8000 München Henner | Vorrichtung zur thermoelektrischen stromerzeugung |
US4551760A (en) * | 1983-09-16 | 1985-11-05 | Rca Corporation | Television camera with solid-state imagers cooled by a thermal servo |
FR2660057B1 (fr) * | 1990-03-21 | 1995-08-18 | Dlb Engineering | Plaque refrigerante pour la presentation et la conservation des marchandises. |
DE19510895C2 (de) * | 1995-03-24 | 1999-04-01 | Thomas Donner | Fleischwolf mit einer Kühlungsvorrichtung |
JP3381897B2 (ja) * | 1997-04-23 | 2003-03-04 | 松下冷機株式会社 | 熱電部材を内蔵した熱電熱交換ブロックの漏れ検査方法 |
JPH11112040A (ja) * | 1997-10-06 | 1999-04-23 | Matsushita Refrig Co Ltd | 熱電モジュールを内蔵するマニホールドの製造方法及びマニホールド |
-
1997
- 1997-11-07 CN CN97199445A patent/CN1236428A/zh active Pending
- 1997-11-07 KR KR1019990704115A patent/KR20000053170A/ko not_active Application Discontinuation
- 1997-11-07 WO PCT/JP1997/004063 patent/WO1998021532A1/ja not_active Application Discontinuation
- 1997-11-07 EP EP97911485A patent/EP0949464A4/en not_active Withdrawn
- 1997-11-07 TW TW086116622A patent/TW357251B/zh active
- 1997-11-07 AU AU48858/97A patent/AU713493B2/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06504361A (ja) | 1991-01-15 | 1994-05-19 | ハイドロクール・プロプライエタリー・リミテッド | 熱電システム |
JPH0712421A (ja) * | 1993-06-25 | 1995-01-17 | Toyo Radiator Co Ltd | 冷却装置 |
JPH07234036A (ja) * | 1994-02-25 | 1995-09-05 | Aisin Seiki Co Ltd | 熱電変換素子の吸・発熱量可変装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0949464A4 |
Also Published As
Publication number | Publication date |
---|---|
AU4885897A (en) | 1998-06-03 |
CN1236428A (zh) | 1999-11-24 |
TW357251B (en) | 1999-05-01 |
AU713493B2 (en) | 1999-12-02 |
EP0949464A4 (en) | 2000-02-02 |
KR20000053170A (ko) | 2000-08-25 |
EP0949464A1 (en) | 1999-10-13 |
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