WO2010110238A1 - セラミック熱交換器及びその製造方法 - Google Patents
セラミック熱交換器及びその製造方法 Download PDFInfo
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- WO2010110238A1 WO2010110238A1 PCT/JP2010/054924 JP2010054924W WO2010110238A1 WO 2010110238 A1 WO2010110238 A1 WO 2010110238A1 JP 2010054924 W JP2010054924 W JP 2010054924W WO 2010110238 A1 WO2010110238 A1 WO 2010110238A1
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- flow path
- heat exchanger
- medium
- channel
- ceramic heat
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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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
- F28F7/02—Blocks traversed by passages for heat-exchange media
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
Definitions
- the present invention relates to a ceramic heat exchanger and a method for manufacturing the same, and more particularly to a ceramic heat exchanger suitable for a microchannel counter flow type heat exchanger and a method for manufacturing the same.
- Ceramics are a material suitable for heat exchangers because they are lighter than metals and have excellent thermal conductivity. In particular, ceramics are also excellent in heat resistance, and thus are expected as materials that can be used for heat recovery of high-temperature gas exceeding 800 ° C. such as exhaust gas from gas turbines. Moreover, although the metal plate fin type heat exchanger generally used in a high temperature region has a high heat exchange rate, there is a problem that the shape of the fin is complicated and expensive. On the other hand, ceramic is a material that is difficult to process into a complicated shape because of its high hardness and high brittleness. As heat exchangers using ceramics having such properties, for example, those described in Patent Documents 1 to 3 have already been proposed.
- the ceramic heat exchanger described in Patent Document 1 separates the fluid passage from an outer frame, a plurality of fluid passages provided for flowing a high-temperature fluid and a low-temperature fluid in the outer frame to face each other. It is characterized in that the partition wall and the outer frame are integrally fired ceramic, and heat exchange between the high temperature fluid and the low temperature fluid is performed through the partition wall.
- the ceramic heat exchanger described in Patent Document 2 forms a raw material mixture formed by mixing silicon carbide powder, carbon powder, and a binder to produce a plurality of grooved plate-like molded bodies. After temporarily bonding the plate-shaped molded body with an adhesive to form a laminated body with the above grooves as pores, and performing a binder removal treatment on the obtained laminated body to obtain a degreased body, The degreased body is heated, impregnated with molten silicon and subjected to reactive sintering to form an integrated sintered body.
- the ceramic heat exchanger described in Patent Document 3 is introduced through a casing for introducing exhaust gas into the interior, from the outside of one end of the casing to the inside, and at the other end of the casing.
- the tube is composed of a plurality of tubes that extend through from the inside to the outside.
- the tube is filled with a heat medium, and the heat medium is transferred from the downstream side to the upstream side of the exhaust gas flow.
- the space between the joints of the casing and each tube is filled with a ceramic material or ceramics made of a ceramic solid material and a ceramic material.
- JP 2002-107072 A JP 2005-289744 A JP-A-10-29876
- Patent Document 1 discloses a ceramic heat exchanger in which flow paths facing each other are arranged in a grid pattern, but how a high-temperature fluid and a low-frequency fluid are caused to flow into the flow path with respect to the ceramic heat exchanger.
- Patent Document 2 discloses a ceramic heat exchanger in which a plurality of flow paths are formed by laminating and joining grooved plate-shaped molded bodies.
- Patent Document 3 discloses a tube-type ceramic heat exchanger, but this ceramic heat exchanger has a complicated joining of the tube and the casing, and not only requires man-hours for manufacturing but also leaks. There is a problem that it is easy to produce.
- the present invention has been devised in view of the above-described problems, and provides a ceramic heat exchanger that can be easily manufactured by reducing the number of joints and that can reduce leakage, and a method for manufacturing the same.
- the purpose is to do.
- the ceramic is composed of ceramics, and heat-exchanges between the first medium and the second medium by sending the first medium and the second medium having a temperature difference to face each other.
- a heat exchanger comprising a body portion formed with a first flow path for feeding the first medium and a second flow path for feeding the second medium, and connected to both ends of the body section, the first flow path
- a lid portion formed with an opening communicating with the one flow path, and the body portion passes the second medium from the side surface portion to the end corresponding to the outlet side of the first flow path.
- an outlet channel that discharges the second medium from the second channel to the side surface at an end corresponding to the inlet side of the first channel.
- the first flow path and the second flow path are alternately formed for each row, for example. Further, the first flow path and the second flow path are formed in a lattice shape or a honeycomb shape, for example. Moreover, the flow path cross sections of the first flow path and the second flow path may be constituted by long sides and short sides. Further, in the channel cross section, the ratio of the long width to the short width is preferably 1.2 to 3.0.
- the inlet channel and the outlet channel are constituted by, for example, a groove formed so as to communicate with the second channel from a side surface portion of the body portion and a back surface of the lid portion. Further, the outlet channel may be formed to have a larger volume than the inlet channel.
- the ceramic heat exchanger has a cylindrical part into which the body part can be inserted, and the cylindrical part communicates with the inlet channel and has an inlet chamber having the inlet part of the second medium, and the outlet. And an outlet chamber communicating with the flow path and having an outlet portion of the second medium.
- a ceramic heat exchanger manufacturing method comprising: a molded body having a first flow path for feeding the first medium and a second flow path for feeding the second medium; and communication with the first flow path
- the ceramic heat exchanger is constituted by the body portion and the lid portion, and the body portion and the lid portion are joined by forming the structure.
- the ceramic heat exchanger can be manufactured, the joints can be reduced, the heat exchanger can be easily manufactured, and the leakage can be reduced.
- FIG. 1 A is a side view
- B is a B arrow view in FIG. 1 (A).
- A is SA-SA sectional drawing
- B is SB-SB sectional drawing.
- A is the sintered compact of the trunk
- B is a trunk
- C shows the sintered body of the body part after the coating step and the sintered body of the lid part corresponding to this.
- FIG. 1 is a figure which shows one Embodiment of the ceramic heat exchanger which concerns on this invention
- (A) is a side view
- (B) is a B arrow view in FIG. 1 (A).
- 2 is a cross-sectional view of the ceramic heat exchanger shown in FIG. 1A, where FIG. 2A is an SA-SA cross-sectional view and FIG. 2B is an SB-SB cross-sectional view.
- the ceramic heat exchanger 1 shown in FIGS. 1 and 2 is made of ceramics and has a first medium (hereinafter referred to as “hot medium”) having a temperature difference and a second medium (hereinafter referred to as “low temperature medium”).
- the ceramic heat exchanger 1 exchanges heat between the high-temperature medium and the low-temperature medium, and sends the first flow path 21 for supplying the high-temperature medium and the low-temperature medium.
- the body part 2 corresponds to an inlet channel 23 for introducing a low-temperature medium into the second channel 22 from the side surface at the end 2 a corresponding to the outlet side of the first channel 21, and the inlet side of the first channel 21.
- An outlet channel 24 that discharges the low temperature medium from the second channel 22 to the side surface portion is provided at the end 2b.
- the body 2 has a function of sending a high-temperature medium and a low-temperature medium facing each other.
- the body portion 2 is a ceramic sintered body having a cylindrical shape, and a plurality of through holes are formed in the axial direction.
- the through holes are formed in a lattice shape, and the first flow path 21 and the second flow path 22 are alternately set for each row.
- oxide ceramics such as alumina and zirconia and non-oxide ceramics such as silicon nitride and silicon carbide can be used.
- Oxide ceramics are excellent in oxidation resistance at high temperatures, and non-oxide ceramics are excellent in mechanical properties at high temperatures because of their low coefficient of thermal expansion.
- silicon carbide having high thermal conductivity and excellent high-temperature strength for the body portion 2.
- the first flow path 21 is a through hole formed over the entire axial direction of the trunk portion 2, and feeds a high-temperature medium along the axial direction of the trunk portion 2. . That is, the high-temperature medium flows into the body 2 from the end surface on the end 2b side of the body 2 and flows out of the body 2 from the end surface on the end 2a side.
- the second flow path 22 is a through-hole formed over a portion excluding both end portions 2a and 2b in the axial direction of the body portion 2, and a low temperature medium is supplied to the body portion 2.
- An inlet channel 23 is formed on the upstream side (end 2a side) of the second channel 22, and an outlet channel 24 is formed on the downstream side (end 2b side). Therefore, the low-temperature medium flows into the body part 2 from the side surface part of the end part 2a of the body part 2, passes through the second flow path 22, and flows out of the body part 2 from the side surface part of the end part 2b.
- the inlet channel 23 and the outlet channel 24 are constituted by groove portions 23 a and 24 a formed so as to communicate with the second channel 22 from the side surface portion of the body portion 2 and the back surface 3 a of the lid portion 3.
- the groove portions 23 a and 24 a are formed from the side surface portion of the trunk portion 2 to the entire region of the second flow path 22. Further, as shown in FIG. 1A, the widths Da and Db of the groove portions 23a and 24a are adjusted depending on the positions where they are formed.
- the widths Da and Db are formed so that, for example, the widths Da and Db at the center are large and the widths Da and Db at both ends are small according to the flow path cross-sectional area of the second flow path 22. Are configured to be able to flow to each second flow path 22 substantially evenly.
- the inlet channel 23 and the outlet channel 24 also function as buffer spaces arranged upstream and downstream of the second channel 22 as shown in FIG.
- the low temperature medium flows into the body portion 2 from the inlet flow path 23, and is heat-exchanged with the high temperature medium through the partition formed between the first flow path 21 and the temperature rises when passing through the second flow path 22.
- the low temperature medium flows out of the body 2 from the outlet channel 24. Therefore, since the low temperature medium that has reached the outlet channel 24 is more thermally expanded than when it flows into the body 2, the outlet channel 24 is formed to have a larger volume than the inlet channel 23. ing. That is, the grooves 23 a and 24 a are formed so that the width Db of the outlet channel 24> the width Da of the inlet channel 23.
- the lid 3 is connected to both end faces of the body 2 and has a function of partitioning the first flow path 21 and the second flow path 22.
- the lid portion 3 is a ceramic sintered body having a disk shape having a larger diameter than the body portion 2, and the first flow path 21 is formed. Openings 31 are formed along the outer shape of each row.
- the ceramic for example, a material mainly composed of silicon nitride or silicon carbide is used, but is not limited thereto, but it is preferable to use the same ceramic as that of the body portion 2.
- the shape of the lid 3 is not limited to the illustrated disk shape, and may be a quadrangular shape, a rounded quadrangular shape, an elliptical shape, a polygonal shape, or the like, and the ceramic heat exchanger 1 is attached. You may form in the shape suitable for a part.
- the opening 31 is formed in the lid 3 so as to communicate with the first flow path 21 and not to communicate with the second flow path 22, the inlet flow path 23, and the outlet flow path 24.
- the openings 31 are formed in a rectangular shape connecting the outer frame shapes of the first flow paths 21 in the row in which the first flow paths 21 are formed, but are not limited to such shapes.
- the lengths of the columns may be substantially the same.
- FIG. 3 is a figure which shows the sintered compact obtained using the manufacturing method of the ceramic heat exchanger which concerns on this invention
- (A) is a sintered compact of the trunk
- (B) Shows the sintered body of the body after the processing step
- (C) shows the sintered body of the body after the coating step and the sintered body of the lid that matches this.
- 3A to 3C the end surface of the trunk portion 2 on the inlet channel 23 side is illustrated.
- the method for manufacturing the ceramic heat exchanger 1 according to the present invention is made of ceramics, and heat exchange is performed between a high-temperature medium and a low-temperature medium by flowing a high-temperature medium and a low-temperature medium facing each other with a temperature difference.
- the ceramic heat exchanger 1 is manufactured in such a manner that the molded body of the body 2 having the first flow path 21 for feeding the high-temperature medium and the second flow path 22 for feeding the low-temperature medium communicates with the first flow path 21.
- the forming step of forming the lid body molded body having the opening 31, and the body 2 and the lid 3 molded body are fired to form the body 2 sintered body 20 and the lid 3 sintered body 30.
- a forming step, a processing step of forming groove portions 23a and 24a communicating with the second flow path 22 from the side surface portions at both end portions 2a and 2b of the sintered body 20 of the body portion 2, and a sintered body of the body portion 2 20 and the bonding agent 4 are applied to at least one bonding surface of the sintered body 30 of the lid portion 3.
- the sintered body 30 of the lid 3 is disposed and heat-treated so that the first flow path 21 and the opening 31 are aligned with both end faces of the sintered body 20 of the body 2.
- the molding step is a step of forming the molded body of the body portion 2 and the molded body of the lid portion 3.
- a clay-like clay obtained by mixing ceramic powder, a binder, and water and kneading using a stirring mixer such as a kneader is shown in FIG. It can obtain by extruding using the metal mold
- the granule granulated by spray-drying has an opening part 31 as shown in FIG.3 (C). It can be obtained by filling a mold that can be formed into a disk shape and pressurizing under a predetermined condition.
- the molding method is not limited to the method described above, and may be subjected to cutting after molding using a hydrostatic press molding method (rubber press molding method) or may be a cast molding method. . Needless to say, the obtained molded body may be cut as necessary.
- silicon carbide is specifically used as the ceramic material.
- a silicon carbide primary material having an average particle diameter of 0.5 to 10 ⁇ m and a purity of 99 to 99.8%, together with carbon (C) and boron (B), alumina (Al 2 O 3 ), yttria (Y 2 O 3 ), magnesia (MgO) and other sintering aids are added, and this is added to a stirring mixer such as a kneader together with binders such as polyethylene glycol and polyethylene oxide and water.
- a clay-like clay that can be used for extrusion molding is obtained.
- a molded object can be obtained by extruding this clay using the metal mold
- the silicon carbide primary material having an average particle diameter of 0.5 to 10 ⁇ m and a purity of 99 to 99.8% was added to carbon (C) and boron (B) together with alumina (Al 2 O 3 ), yttria (Y 2 O 3 ), magnesia (MgO) and other sintering aids are added, and a suitable amount of binder such as polyethylene glycol and polyethylene oxide is added to form a slurry, which is then spray dried. Granulate by the method (spray drying method). And a molded object can be obtained by filling this granule in the metal mold
- the firing step is a step of firing the molded body of the body portion 2 and the lid portion 3 to form the sintered body 20 of the body portion 2 and the sintered body 30 of the lid portion 3.
- the molded body of the body portion 2 and the lid portion 3 is placed in a firing furnace and fired at a predetermined atmosphere, temperature, and holding time according to the material of the ceramic powder, so that FIG. 3 has a cylindrical body 2 sintered body 20 having a plurality of through holes (first flow path 21 and second flow path 22) and an opening 31 shown in FIG. 3C.
- a sintered body 30 of the disc-shaped lid portion 3 can be obtained.
- the ceramic material is silicon carbide
- each sintered body can be obtained by firing at a temperature of 1800 to 2200 ° C. in a non-oxidizing atmosphere.
- the processing step is a step of forming the grooves 23a and 24a constituting the inlet channel 23 and the outlet channel 24. Specifically, groove portions 23 a and 24 a communicating with the second flow path 22 are formed at both end portions 2 a and 2 b of the sintered body 20 of the body portion 2.
- the widths Da and Db of the groove portions 23a and 24a at both end portions 2a and 2b of the body portion 2 are set as shown in FIG. 1A, for example.
- ceramic is a material that has high hardness and high brittleness, and is difficult to process.
- the processing is easy, and the groove portions 23a and 24a can be formed without damaging the sintered body 20 of the body portion 2, and the end portion 2a side of the sintered body 20 of the body portion 2 after the processing step can be formed.
- the end face is as shown in FIG.
- the application step is a step of applying the bonding agent 4 to at least one bonding surface of the sintered body 20 of the body portion 2 and the sintered body 30 of the lid portion 3.
- the bonding agent 4 for example, a vitreous glaze is used.
- Such a bonding agent 4 is applied to both end surfaces of the sintered body 20 of the body portion 2 which is a bonding surface with a brush or the like.
- the end surface on the end 2a side of the sintered body 20 of the body portion 2 after the coating step is as shown by the shaded portion in FIG. 3C.
- the bonding agent 4 may be applied to the back surface 3a of the sintered body 30 of the lid portion 3 that is the bonding surface while performing masking or the like as necessary.
- the sintered body 20 of the trunk portion 2 and the lid portion 3 The bonding agent 4 may be applied to both bonding surfaces of the sintered body 30.
- the heat treatment step is a step in which the sintered body 20 of the body portion 2 and the sintered body 30 of the lid portion 3 are integrated to obtain the ceramic heat exchanger 1 shown in FIGS.
- the sintered body 30 of the lid 3 is arranged so that the first flow path 21 and the opening 31 are in communication with both end faces of the sintered body 20 of the body 2 to which the bonding agent 4 is applied.
- the sintered body 20 of the body portion 2 and the sintered body 30 of the lid portion 3 are integrated with the bonding agent 4 by heat treatment.
- the joints that are likely to cause leakage in the ceramic heat exchanger 1 obtained after the heat treatment can be reduced to two places on both end faces of the body portion 2.
- the possibility that a leak will occur can be reduced.
- the bonding agent 4 is applied to at least one joining surface of the both end surfaces of the sintered body 20 of the body portion 2 or the back surface 3a of the sintered body 30 of the lid portion 3, so Since only one flow path 21 and the opening 31 of the sintered body 30 of the lid portion 3 are arranged so as to communicate with each other and heat treatment is performed, the sintered body 20 and the lid portion of the body portion 2 can be easily integrated. 3 sintered bodies 30 can be joined, and the number of work steps can be reduced.
- the inlet channel 23 and the outlet channel 24 for allowing the low temperature medium to flow through the second channel 22 are formed with groove portions 23a, 24a at both ends 2a, 2b of the sintered body 20 of the body portion 2, and a lid portion. Therefore, it is possible to select a processing method that can be applied to ceramics that are highly brittle and difficult to process, and can be easily processed.
- FIG. 4 is a figure which shows the use condition of the ceramic heat exchanger which concerns on this invention, (A) has shown the 1st usage example, (B) has shown the 2nd usage example.
- A) has shown the 1st usage example
- B has shown the 2nd usage example.
- symbol is attached
- the use example of the ceramic heat exchanger 1 has a cylindrical part 5 into which the body part 2 can be inserted.
- the cylindrical part 5 communicates with the inlet channel 23 and is a low temperature medium.
- An inlet chamber 51 having an inlet portion 51a, and an outlet chamber 52 communicating with the outlet channel 24 and having an outlet portion 52a for a low-temperature medium.
- a low-temperature medium is allowed to flow in and out from the side surface side of the ceramic heat exchanger 1.
- the cylindrical portion 5 is mounted between the lid portions 3 of the ceramic heat exchanger 1, and guide channels 6 for guiding the high temperature medium are connected to both ends thereof by fasteners 8 such as bolts.
- an elastic body 7 is disposed between the lid 3 and the guide channel 6. Since the cylindrical portion 5 and the guide channel 6 are generally made of metal, there may be a case where a difference in thermal expansion occurs with the ceramic heat exchanger 1, and this difference in thermal expansion is absorbed by the elastic body 7.
- the elastic body 7 may be a rubber member rich in sealing performance, or may be a spring member when sealing performance is ensured in other portions.
- the cylindrical portion 5 has a convex portion 53 on the inner peripheral surface, and an inlet chamber 51 and an outlet chamber 52 are formed by the convex portion 53.
- the internal diameter of the convex part 53 is formed a little larger than the outer diameter of the trunk
- the axial width Dc of the convex portion 53 is formed so as not to overlap the inlet channel 23 and the outlet channel 24 as shown in FIG. 4A, for example.
- the length of the buffer space of the inlet channel 23 and the outlet channel 24 may be adjusted according to the length of the axial width Dc).
- the cylinder part 5 is comprised, for example so that it can be divided
- One inlet portion 51a and one outlet portion 52a may be formed in each of the inlet chamber 51 and the outlet chamber 52, or a plurality of inlet portions 51a and a plurality of outlet portions 52a may be formed radially.
- the high-temperature medium is sent in the axial direction of the ceramic heat exchanger 1 and enters the first flow path 21 from the end 2b side where the outlet flow path 24 is formed. It is sent to the outside from the formed end 2a side. Further, the low temperature medium is fed into the inlet chamber 51 from the inlet portion 51a of the cylindrical portion 5, enters the second flow passage 22 from the inlet passage 23 formed in the side surface portion of the ceramic heat exchanger 1, and Heat is exchanged with the high-temperature medium in the section 2 and is sent to the outside through the outlet channel 24, the outlet chamber 52, and the outlet section 52a.
- the high-temperature medium is, for example, exhaust gas at 800 ° C.
- the low-temperature medium is, for example, compressed air of about 150 to 200 ° C. supplied to an internal combustion engine such as an engine.
- the temperature of the compressed air which is a low-temperature medium, is increased to, for example, about 500 ° C.
- a low-temperature medium is caused to flow in and out from the axial direction of the ceramic heat exchanger 1.
- the adapter 9 for reducing the diameter of the inlet is connected to the upstream side of the high-temperature medium of the ceramic heat exchanger 1, and the cylindrical portion 5 is mounted between the lid portion 3 on the downstream side and the flange portion 91 of the adapter 9.
- the guide flow path 6 for guiding the high-temperature medium is disposed at both ends thereof.
- the adapter 9 is, for example, an annular structure having a conical surface.
- the adapter 9 is comprised with the ceramic material similar to the ceramic heat exchanger 1, for example, and is joined to the trunk
- the cylinder part 5 has the entrance part 51a, the entrance chamber 51, the convex part 53, the exit part 52a, and the exit chamber 52 similarly to the 1st usage example.
- a low-temperature medium introduction path 54 is formed on the outer periphery of the inlet chamber 51 and the outlet chamber 52.
- the cylindrical portion 5 has a double wall structure, the outer peripheral space is used as the low-temperature medium introduction path 54, and the inner peripheral space is used as the ceramic heat exchanger 1 installation space and the low-temperature medium outlet path ( It is used as the exit chamber 52).
- a stepped portion 55 projecting inward is formed on the upstream side of the high temperature medium of the cylindrical portion 5, and the inlet portion 54 a of the introduction path 54 and the outlet portion 52 a of the outlet chamber 52 are formed on the stepped portion 55. It is formed in the axial direction of the exchanger 1. Further, the stepped portion 55 is configured to come into contact with the flange portion 91 of the adapter 9 via the elastic body 7, and the guide channel 6 on the upstream side of the high-temperature medium is integrally formed.
- the ceramic heat exchanger 1 is inserted from the downstream side of the high-temperature medium of the cylindrical portion 5 and brought into contact with the stepped portion 55 in the cylindrical portion 5, and the cylindrical portion 5 and the guide channel 6 are connected by the fastener 8.
- the ceramic heat exchanger 1 can be installed in the guide channel 6 of the high temperature medium only by connecting.
- the high temperature medium is sent in the axial direction of the ceramic heat exchanger 1 and enters the first flow path 21 via the adapter 9, and the end 2 a side where the inlet flow path 23 is formed. Is sent to the outside. Further, the low-temperature medium is sent from the introduction port 54 a of the introduction path 54 of the cylindrical portion 5 into the inlet chamber 51 via the inlet portion 51 a, and is formed in the inlet channel 23 formed in the side surface portion of the ceramic heat exchanger 1. Enters the second flow path 22, exchanges heat with the high-temperature medium in the body portion 2, and is sent to the outside through the outlet flow path 24, the outlet chamber 52, and the outlet section 52 a.
- the low temperature medium may flow in and out from the axial direction downstream of the high temperature medium, or one of the low temperature medium inflow and outflow may be in the side surface direction and the other in the axial direction.
- the low temperature medium may flow from the axial direction on the downstream side of the high temperature medium and flow out from the axial direction on the upstream side.
- FIG. 5 is a figure which shows the modification of the ceramic heat exchanger which concerns on this invention
- (A) is a side view which shows a 1st modification
- (B) is sectional drawing which shows a 2nd modification
- FIG. 6 is a figure which shows the 3rd modification of the ceramic heat exchanger which concerns on this invention
- (A) is an end surface of a ceramic heat exchanger
- (B) is an end surface of a trunk
- (C) is a lid
- symbol is attached
- the widths Da and Db of the grooves 23a and 24a in the inlet channel 23 and the outlet channel 24 are formed equally.
- the widths Da and Db of the grooves 23a and 24a in the inlet channel 23 and the outlet channel 24 may be various shapes depending on design conditions and use conditions, such as narrowing the central part and widening the vicinity of both ends. Of course, it can be deformed.
- the cross-sectional view of the second modification shown in FIG. 5B corresponds to the cross-sectional view of SB-SB shown in FIG.
- the widths Da and Db of the groove portions 23a and 24a in the inlet channel 23 and the outlet channel 24 are curved so as to be maximum at the center in the groove forming direction.
- the degree of such bending is configured such that the low-temperature medium can be sent to each second channel 22 substantially evenly according to the channel cross-sectional area of the second channel 22 and each of the grooves 23a and 24a.
- the widths Da and Db of the groove portions 23a and 24a in the inlet channel 23 and the outlet channel 24 may be curved so as to be a minimum value at the center portion in the groove forming direction. Needless to say, it can be formed into various shapes depending on design conditions and use conditions, such as being inclined and narrow or wide.
- each through hole of the third modified example has a hexagonal cross section and is arranged in a honeycomb shape.
- the first flow path 21 and the second flow path 22 are alternately arranged for each row. Is set.
- a groove portion 23a constituting the inlet flow path 23 is formed from the side face portion to the side face portion so as to communicate with the second flow path 22.
- the groove 23 a is formed on one side of the hexagonal cross section of the second flow path 22 so as not to communicate with the first flow path 21.
- the outlet channel 24 side has the same shape.
- the lid 3 is formed with an opening 31 that communicates with the first flow path 21 that constitutes the flow path of the high-temperature medium.
- the opening 31 is formed in a shape connecting the outer frame shapes of the first flow paths 21 in the row in which the first flow paths 21 are formed.
- FIG. 7 is a figure which shows the other modification of the ceramic heat exchanger which concerns on this invention, (A) is a 4th modification, (B) is a 5th modification. 7A and 7B illustrate the end surface of the body 2 in the ceramic heat exchanger 1 (with the lid 3 removed).
- symbol is attached
- the cross sections of the first flow path 21 and the second flow path 22 are rectangular. That is, the channel cross section of the first channel 21 is configured by a pair of long sides 21a and a pair of short sides 21b, and the channel cross section of the second channel 22 is configured by a pair of long sides 22a and a pair of short sides 22b. ing.
- the number of partition walls can be reduced, processing can be facilitated, and the weight of the heat exchanger can be reduced.
- the heat transfer area of the first flow path 21 and the second flow path 22 can be increased and the hydraulic diameter (representative dimension of the flow path cross section used in the heat transfer calculation) can be reduced. The heat transfer rate can be improved.
- the cross sections of the first flow path 21 and the second flow path 22 are formed by a rectangle having a long width X and a short width Y.
- the ratio of the long width X to the short width Y (long width X / short width Y) is set to 1.2 to 3.0.
- the ratio of long width X / short width Y is smaller than 1.2, the processing resistance is large, and it is difficult to form a specific flow path cross section.
- the ratio of long width X / short width Y is larger than 3.0, the long width X is more easily contracted than the short width Y, and the flow path cross section is easily deformed.
- one side may be made into a square and the other may be comprised in a rectangle, long width X and short width Y, The ratio may be different.
- the cross sections of the first flow path 21 and the second flow path 22 are configured by hexagons having a long width X and a short width Y. That is, the flow path cross section of the first flow path 21 is composed of a pair of long sides 21a and two pairs of short sides 21b, and the flow path cross section of the second flow path 22 is composed of a pair of long sides 22a and two pairs of short sides 22b. It is configured. With this configuration, the number of partition walls can be reduced, processing can be facilitated, and the weight of the heat exchanger can be reduced.
- the heat transfer area of the first flow path 21 and the second flow path 22 can be increased and the hydraulic diameter (representative dimension of the flow path cross section used in the heat transfer calculation) can be reduced.
- the heat transfer rate can be improved. Note that the ratio between the long width X and the short width Y is the same as that in the fourth modification example shown in FIG.
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- Ceramic Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Ceramic Products (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
Claims (9)
- セラミックスにより構成され、温度差を有する第一媒体と第二媒体とを対向させて送流することにより、前記第一媒体と前記第二媒体との間で熱交換するセラミック熱交換器であって、
前記第一媒体を送流する第一流路及び前記第二媒体を送流する第二流路が形成された胴部と、該胴部の両端部に接続され前記第一流路と連通する開口部が形成された蓋部と、を有し、前記胴部は、前記第一流路の出口側に相当する端部に前記第二媒体を側面部から前記第二流路に導入する入口流路と、前記第一流路の入口側に相当する端部に前記第二媒体を前記第二流路から側面部に排出する出口流路と、を有することを特徴とするセラミック熱交換器。 - 前記第一流路及び前記第二流路は、一列毎に交互に形成されていることを特徴とする請求項1に記載のセラミック熱交換器。
- 前記第一流路及び前記第二流路は、格子状又はハニカム状に形成されていることを特徴とする請求項1に記載のセラミック熱交換器。
- 前記第一流路及び前記第二流路の流路断面は、長辺及び短辺により構成されていることを特徴とする請求項3に記載のセラミック熱交換器。
- 前記流路断面は、短幅に対する長幅の比率が1.2~3.0であることを特徴とする請求項4に記載のセラミック熱交換器。
- 前記入口流路及び前記出口流路は、前記胴部の側面部から前記第二流路と連通するように形成された溝部と前記蓋部の裏面とにより構成されていることを特徴とする請求項1に記載のセラミック熱交換器。
- 前記出口流路は、前記入口流路よりも容積が大きく形成されていることを特徴とする請求項1に記載のセラミック熱交換器。
- 前記胴部を挿入可能な筒部を有し、該筒部は、前記入口流路と連通するとともに前記第二媒体の入口部を有する入口室と、前記出口流路と連通するとともに前記第二媒体の出口部を有する出口室と、を備えることを特徴とする請求項1に記載のセラミック熱交換器。
- セラミックスにより構成され、温度差を有する第一媒体と第二媒体とを対向させて送流することにより、前記第一媒体と前記第二媒体との間で熱交換するセラミック熱交換器の製造方法であって、
前記第一媒体を送流する第一流路及び前記第二媒体を送流する第二流路を有する胴部の成形体と前記第一流路と連通する開口部を有する蓋部の成形体とを形成する成形工程と、
前記胴部及び前記蓋部の成形体を焼成して前記胴部及び前記蓋部の焼結体を形成する焼成工程と、
前記胴部の焼結体の両端部に側面部から前記第二流路と連通する溝部を形成する加工工程と、
前記胴部及び前記蓋部の焼結体の少なくとも一方の接合面に接合剤を塗布する塗布工程と、
前記胴部の焼結体の両端面に前記第一流路と前記開口部とを一致させるように前記蓋部の焼結体を配置して熱処理し、前記胴部及び前記蓋部の焼結体を前記接合剤で一体化する熱処理工程と、
を有することを特徴とするセラミック熱交換器の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP10756034.4A EP2413079B1 (en) | 2009-03-23 | 2010-03-23 | Ceramic heat exchanger and method for manufacturing same |
JP2011506043A JP5514190B2 (ja) | 2009-03-23 | 2010-03-23 | セラミック熱交換器及びその製造方法 |
US13/257,827 US9097473B2 (en) | 2009-03-23 | 2010-03-23 | Ceramic heat exchanger and method of producing same |
CN201080022474.6A CN102439389B (zh) | 2009-03-23 | 2010-03-23 | 陶瓷热交换器及其制造方法 |
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JP2009-069965 | 2009-03-23 | ||
JP2009069965 | 2009-03-23 |
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WO2010110238A1 true WO2010110238A1 (ja) | 2010-09-30 |
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PCT/JP2010/054924 WO2010110238A1 (ja) | 2009-03-23 | 2010-03-23 | セラミック熱交換器及びその製造方法 |
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US (1) | US9097473B2 (ja) |
EP (1) | EP2413079B1 (ja) |
JP (1) | JP5514190B2 (ja) |
CN (1) | CN102439389B (ja) |
WO (1) | WO2010110238A1 (ja) |
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JP2012193946A (ja) * | 2011-02-28 | 2012-10-11 | Jfe Steel Corp | 空気予熱装置および排気再循環装置 |
JP2013100966A (ja) * | 2011-11-09 | 2013-05-23 | Tokyo Yogyo Co Ltd | 蓄熱式バーナ用蓄熱体及び蓄熱式バーナ用蓄熱体の製造方法 |
WO2015115257A1 (ja) * | 2014-01-28 | 2015-08-06 | イビデン株式会社 | 熱交換器 |
WO2015115255A1 (ja) * | 2014-01-28 | 2015-08-06 | イビデン株式会社 | ハニカム構造体 |
WO2015115258A1 (ja) * | 2014-01-28 | 2015-08-06 | イビデン株式会社 | 熱交換器 |
WO2015115254A1 (ja) * | 2014-01-29 | 2015-08-06 | イビデン株式会社 | 熱交換器 |
WO2015115256A1 (ja) * | 2014-01-28 | 2015-08-06 | イビデン株式会社 | 熱交換器 |
WO2017213087A1 (ja) * | 2016-06-06 | 2017-12-14 | イビデン 株式会社 | 熱交換器 |
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US8281621B2 (en) | 2010-09-27 | 2012-10-09 | Whirlpool Corporation | Apparatus and method for determining a characteristic of a consumable |
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JP6897079B2 (ja) * | 2016-12-08 | 2021-06-30 | 株式会社Ihi | 熱処理装置 |
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JP2013100966A (ja) * | 2011-11-09 | 2013-05-23 | Tokyo Yogyo Co Ltd | 蓄熱式バーナ用蓄熱体及び蓄熱式バーナ用蓄熱体の製造方法 |
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Also Published As
Publication number | Publication date |
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JP5514190B2 (ja) | 2014-06-04 |
EP2413079A1 (en) | 2012-02-01 |
JPWO2010110238A1 (ja) | 2012-09-27 |
US20120048524A1 (en) | 2012-03-01 |
CN102439389A (zh) | 2012-05-02 |
US9097473B2 (en) | 2015-08-04 |
EP2413079A4 (en) | 2014-04-09 |
EP2413079B1 (en) | 2016-06-01 |
CN102439389B (zh) | 2014-03-12 |
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