JP2020012584A - Plate-type heat exchanger - Google Patents

Abstract

To occupy a very small space and to excellently cool many kinds of hydrogen gases in parallel.SOLUTION: In a plate-type heat exchanger, bonding surfaces of a plurality of plate bodies 41 to 44 are bonded in the state that the respective plate bodies 41 to 44 including a hydrogen gas plate 43 having a groove forming areas A3 where a hydrogen gas passage groove is formed and a brine plate 42 having a groove forming area A2 where a brine passage groove is formed are layered, and hydrogen gas passing the hydrogen gas passage groove can be cooled by heat exchange with the brine passing the brine passage groove. The plate 43 has N1=2 areas A3, A3 provided independently of each other and can cool the hydrogen gases passing the passage grooves in the respective areas A3, A3 without mixing them, and is provided with a heat insulation part forming area A4 where a slit S3 insulating heat from the hydrogen gas passing the passage groove in one of the areas A3 and hydrogen gas passing the passage groove in the other area A3 is formed between the adjacent areas A3, A3.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a plate heat exchanger configured to be able to cool a fluid to be cooled by heat exchange with a cooling fluid.

  As a plate-type heat exchanger of this type, the applicant has disclosed in Patent Documents below a heat exchanger for cooling hydrogen gas (a plate-type heat exchanger manufactured according to the manufacturing method disclosed in the document: Vessel). This heat exchanger is a plate type configured to be capable of cooling hydrogen gas, which is moved from a hydrogen gas tank toward an air supply target via a dispenser at the time of air supply (filling) to the air supply target, by heat exchange with brine. A heat exchanger, in which a laminate composed of a plate for a brine passage groove, a plate for a hydrogen gas passage groove, and a partition plate is joined to each other in a state of being laminated between the base plate and the pipe connection plate. It comprises a main body.

  In this case, each plate body such as a plate for the brine passage groove, a plate for the hydrogen gas passage groove, a partition plate, a base plate, and a plate for pipe connection is formed by a metal plate such as stainless steel in a rectangular shape in plan view. . Further, the brine passage groove plate is formed with a brine passage groove, and formed with through holes for introducing the brine into the brine passage groove and discharging the brine from the brine passage groove, respectively. ing. Further, a hydrogen gas passage groove is formed in the hydrogen gas passage groove plate, and hydrogen gas is introduced into the hydrogen gas passage groove and hydrogen gas is discharged from the hydrogen gas passage groove. Through holes are respectively formed.

  In addition, the partition plate is disposed between the plate for the brine passage groove and the plate for the hydrogen gas passage groove, and one surface functions as a lid of the brine passage groove and is combined with the brine passage groove plate. The flow path is formed, and the other surface functions as a lid of the hydrogen gas passage groove, and forms a hydrogen gas passage together with the hydrogen gas passage groove plate. This partition plate is used for introducing brine into the brine channel, discharging brine from the brine channel, introducing hydrogen gas into the hydrogen gas channel, and discharging hydrogen gas from the hydrogen gas channel. Through holes are respectively formed.

  In addition, the introduction of brine into each of the through holes for introducing brine, the discharge of brine from each of the through holes for discharging brine, the introduction of hydrogen gas, and the introduction of hydrogen gas to the pipe connection plate in the thickness direction of each plate body. Through holes for introducing hydrogen gas into each through hole for discharging hydrogen gas and discharging hydrogen gas from each through hole for discharging hydrogen gas are formed. In the heat exchanger, the main body portion is formed by a bonding process in which the respective plate bodies are laminated in a predetermined lamination order and heated while being pressed in the thickness direction to diffuse and bond the bonding surfaces of the respective plate bodies. Are formed.

  In the hydrogen gas supply system equipped with this heat exchanger, when supplying hydrogen gas to the supply target, hydrogen gas moved from the hydrogen gas tank toward the supply target is introduced into the heat exchanger, and While passing through the hydrogen gas flow path, low-temperature brine cooled by the refrigeration circuit and stored in the brine tank is pumped by the liquid feed pump, introduced into the heat exchanger, and passed through the brine flow path. Can be At this time, the hydrogen gas is cooled by heat exchange between the brine and the hydrogen gas in the heat exchanger, and the cooled hydrogen gas is discharged from the heat exchanger and supplied to the air supply target. Collected from the heat exchanger to the brine tank. Thereby, the supply of the hydrogen gas to the supply target is completed.

Prior application 1

  Japanese Patent Application No. 2017-109740

  However, the heat exchanger disclosed by the applicant has the following problems to be improved. Specifically, in the heat exchanger disclosed by the applicant, the hydrogen gas moved from the hydrogen gas tank toward the supply target is passed through the hydrogen gas flow path, and the brine is pressure-fed from the brine tank. When hydrogen gas is passed through the brine channel, the hydrogen gas is cooled by heat exchange with the brine.

  On the other hand, at a processing site where hydrogen gas is cooled by this type of heat exchanger (hydrogen gas supply station, etc.), cooling processing is performed in parallel for a plurality of types of hydrogen gas having different temperatures before cooling. In some cases, cooling processing may be performed in parallel on a plurality of types of hydrogen gas having different cooling target temperatures. Further, for example, when supplying hydrogen gas to a plurality of air supply targets, even if the temperature before cooling or the cooling target temperature is the same, the timing of the start of cooling (start of air supply) and the end of cooling Since the timing of (end of air supply) and the cooling amount per unit time (air supply amount) are different, it is necessary to perform the hydrogen gas cooling process separately for each air supply target.

  For this reason, hydrogen gas having different temperatures before cooling, cooling target temperature, timing of cooling start and cooling end, and cooling amount per unit time (hereinafter, hydrogen gas having different conditions are referred to as “a plurality of types of hydrogen gas”). At the processing site where it is necessary to cool gas in parallel, it is necessary to install a number of heat exchangers corresponding to the number of cooling processes performed at the same time.

  In this case, when a plurality of heat exchangers disclosed by the applicant are installed at one processing site, when the heat exchangers are arranged close to each other, hydrogen gas cooling processing is performed in one of the heat exchangers. When this occurs, the temperature of the other heat exchanger that has absorbed the heat generated from the heat exchanger rises, and the cooling efficiency decreases. Therefore, when installing a plurality of heat exchangers at one processing site, it is necessary to arrange the heat exchangers sufficiently apart in order to reduce the influence of heat generation from other heat exchangers. There is a large space required for installing these heat exchangers. Therefore, it is preferable to improve this point.

  The present invention has been made in view of such problems to be improved, and has an object to provide a plate heat exchanger that occupies a sufficiently small space and can appropriately cool a plurality of types of hydrogen gas in parallel. Main purpose.

  In order to achieve the above object, the plate heat exchanger according to claim 1 has a first groove forming region in which a first fluid passage groove through which a fluid to be cooled can pass is formed. A plurality of plate bodies including at least a body and a second plate body having a second groove forming region in which a second fluid passage groove through which a cooling fluid can pass is formed; The joining surfaces of the respective plate bodies are joined in a state where they are stacked, and the cooled fluid passing through the first fluid passage groove and the cooling fluid passing through the second fluid passage groove A plate-type heat exchanger configured to be capable of cooling the fluid to be cooled by heat exchange with the first plate body, wherein the first plate body includes N1 pieces (N1 is a natural number of 2 or more) provided separately and independently. ), The first fluid passage in each of the first groove forming regions having the first groove forming region. The cooling fluid is configured to be able to exchange heat with the cooling fluid without mixing the fluids to be cooled passing through the groove, and between the adjacent first groove forming regions, in one of the first groove forming regions. A first fluid that insulates the fluid to be cooled passing through the first fluid passage groove and the fluid to be cooled that passes through the first fluid passage groove in the other first groove forming region. A first heat insulating region in which a heat insulating portion is formed is provided.

  The plate heat exchanger according to claim 2 is the plate heat exchanger according to claim 1, wherein the second plate is N2 (N2 is a natural number of 2 or more) provided independently and independently. Heat exchange with the fluid to be cooled without mixing the cooling fluids passing through the second fluid passage grooves in each of the second groove formation areas. And the cooling fluid passing through the second fluid passage groove in one of the second groove forming regions between the adjacent second groove forming regions, and the other of the cooling fluid passing therethrough. A second heat-insulating area is provided with a second heat-insulating portion that insulates the cooling fluid that passes through the second fluid-passing groove in the second groove-forming area.

  The plate heat exchanger according to claim 3 is the plate heat exchanger according to claim 1 or 2, wherein the first plate body is N pieces of the N1 first groove forming regions. The first plate forming area, and the second plate body includes the N second groove forming areas as the N2 second groove forming areas, and an M-th one. (M is a natural number of 2 or more and N or less) The first plate so that the first groove forming region and the M-th second groove forming region overlap in the stacking direction of the plate members. The body and the second plate body are stacked.

  The plate type heat exchanger according to claim 4, wherein the first plate body having the first fluid passage groove through which the fluid to be cooled can pass, and the second fluid through which the cooling fluid can pass. In a state where a plurality of plate members including at least the second plate member having the passage groove formed therein are stacked in a predetermined stacking order, the bonding surfaces of the plate members are joined to each other, and the first fluid A plate heat exchanger configured to be able to cool the cooling fluid by heat exchange between the cooling fluid passing through the passage groove and the cooling fluid passing through the second fluid passage groove. L (where L is a natural number of 2 or more) provided by laminating each of the plate bodies including at least the first plate body and the second plate body is provided. Without mixing the fluids to be cooled passing through the first fluid passage grooves of the plate body. The cooling fluid is configured to be able to exchange heat with the cooling fluid, and the fluid to be cooled that passes through the first fluid passage groove of the first plate body in one of the stacked bodies between the adjacent stacked bodies. A third plate that constitutes a heat insulating portion that insulates the fluid to be cooled that passes through the first fluid passage groove of the first plate in the other of the laminates is sandwiched.

  The plate heat exchanger according to claim 5 is the plate heat exchanger according to claim 4, wherein the cooling member passes through the second fluid passage groove of the second plate member in each of the stacked bodies. The heat exchange is possible with the fluid to be cooled without mixing the fluids.

  The plate heat exchanger according to claim 6 is the plate heat exchanger according to claim 4 or 5, wherein each of the stacked bodies includes a plurality of the first plate members and a plurality of the second plate members. The above-mentioned respective plate bodies are laminated and configured.

  According to a seventh aspect of the present invention, in the plate heat exchanger according to any one of the first to sixth aspects, the plate heat exchanger is configured to be capable of cooling hydrogen gas as the fluid to be cooled.

  In the plate heat exchanger according to the first aspect, the first plate body having the first groove forming area in which the first fluid passage groove through which the fluid to be cooled can pass is formed separately and independently. Heat exchange with the cooling fluid without mixing the fluids to be cooled passing through the first fluid passage groove in each of the first groove formation regions having the N1 first groove formation regions provided. A cooling target fluid that passes through the first fluid passage groove in one of the first groove forming regions and the other first groove forming region between adjacent first groove forming regions A first heat-insulating region in which a first heat-insulating portion is formed to insulate the fluid to be cooled passing through the first fluid passage groove inside the first heat-insulating region.

  Therefore, according to the plate heat exchanger of the first aspect, although the N1 first groove forming regions are sufficiently brought close to each other, the first groove forming region provided between the adjacent first groove forming regions. The first heat insulating region allows the fluid to be cooled to pass through the first fluid passage groove in one of the first groove forming regions and the first fluid passage groove in the other first groove forming region to pass through. And N1 types of fluids to be cooled can be suitably cooled in parallel, and N1 separate and independent heat exchangers (plate heat exchangers) can be provided. The space occupied by the heat exchangers (plate heat exchangers) required for cooling each of the cooled fluids can be made sufficiently small as compared with the configuration in which the N1 types of the fluids to be cooled are cooled by using the heat exchanger.

  In the plate-type heat exchanger according to the second aspect, the second plate having the second groove forming region in which the second fluid passage groove through which the cooling fluid can pass is formed separately and independently. Heat exchange with the fluid to be cooled without having the N2 second groove forming areas provided and mixing the cooling fluids passing through the second fluid passage grooves in each of the second groove forming areas. A cooling fluid that passes through a second fluid passage groove in one of the second groove formation regions between adjacent second groove formation regions, and the other second groove formation region A second heat insulating region is provided in which a second heat insulating portion for insulating the cooling fluid passing through the second fluid passage groove inside is formed.

  Therefore, according to the plate heat exchanger of the second aspect, although the N2 second groove formation regions are sufficiently close to each other, the second heat exchanger is provided between the adjacent second groove formation regions. The cooling fluid passing through the second fluid passage groove in the one second groove forming region and the cooling fluid passing through the second fluid passage groove in the other second groove forming region by the second heat insulating region. The cooling fluid passing through the second fluid passage groove in any one of the second groove forming regions can be appropriately insulated from the cooling fluid to be cooled. As a result, it is possible to reliably prevent the temperature from rising due to the effect of the cooling fluid passing through the second fluid passage groove in the second groove forming area, thereby making it difficult to suitably cool the cooled fluid. can do.

  Further, in the plate heat exchanger according to the third aspect, the first plate member includes N first groove forming regions as N1 first groove forming regions, and the second plate member. Includes N second groove formation regions as N2 second groove formation regions, and each of the M first groove formation regions and the M second groove formation regions has The first plate and the second plate are stacked so as to overlap in the stacking direction of the plate.

  Therefore, according to the plate heat exchanger according to the third aspect, the fluid to be cooled passing through the first fluid passage groove in any one of the first groove forming regions is converted into the first groove. When cooling with the cooling fluid passing through the second fluid passage groove in the second groove formation region overlapping the formation region in the stacking direction, the other second groove formation region A situation in which the cooling of the fluid to be cooled is hindered by the heat of the cooling fluid passing through the second fluid passage groove can be suitably avoided.

  In the plate heat exchanger according to the fourth aspect, the first plate body having the first fluid passage groove through which the fluid to be cooled can pass, and the second fluid through which the cooling fluid can pass Each of the plurality of plate bodies including at least the second plate body having the passage groove formed thereon is provided with L laminated bodies, and each of the laminated bodies passes through the first fluid passage groove of the first plate body. The cooling fluid is configured to be heat-exchangeable with the cooling fluid without mixing the cooling fluids, and the cooling fluid passing through the first fluid passage groove of the first plate in one of the laminates is disposed between adjacent laminates. A third plate that constitutes a heat insulating portion that insulates the cooling fluid and the fluid to be cooled that passes through the first fluid passage groove of the first plate in the other laminate is sandwiched.

  Therefore, according to the plate heat exchanger of the fourth aspect, the third plate member disposed between the adjacent stacked members in the stacking direction despite the L stacked members being sufficiently close to each other. The fluid to be cooled passing through the first fluid passage groove in the first groove forming region in one of the laminates and the first fluid in the first groove forming region in the other laminate by the (heat insulating portion). Since it is possible to preferably insulate the fluid to be cooled passing through the fluid passage groove, it is possible to suitably cool the L kinds of fluids to be cooled in parallel, and to perform L separate and independent heat exchangers. As compared with a configuration in which the L-type fluids to be cooled are cooled using the (plate-type heat exchanger), the space occupied by the heat exchange liquid (the plate-type heat exchanger) required for cooling each of the fluids to be cooled is sufficiently increased. Can be smaller.

  According to the plate heat exchanger of the fifth aspect, heat exchange with the fluid to be cooled can be performed without mixing the cooling fluids passing through the second fluid passage grooves of the second plate in each of the laminates. In this configuration, the third plate (heat insulating portion) disposed between the adjacent stacked bodies in the stacking direction makes the one of the stacked bodies, despite the L stacked bodies being sufficiently brought close to each other. The cooling fluid passing through the second fluid passage groove in the second groove forming region and the cooling fluid passing through the second fluid passage groove in the second groove forming region in the other laminate. Can be suitably insulated, so that the cooling fluid passing through the second fluid passage groove in any of the second groove forming regions of each laminate is The temperature is affected by the cooling fluid passing through the second fluid passage groove in any of the second groove forming regions. The temperature to become a difficult state to suitably cool the cooled fluid can be reliably avoided.

  In the plate heat exchanger according to the sixth aspect, each of the laminated bodies is configured by laminating the respective plate bodies including the plurality of first plate bodies and the plurality of second plate bodies. Therefore, according to the plate heat exchanger of the sixth aspect, for example, when a plate heat exchanger is configured to be able to cool two types of fluids to be cooled, one plate for cooling one of the fluids to be cooled is provided. A stack of one first plate and one second plate, and one first plate and one second plate for cooling the other fluid to be cooled When a plurality of bodies are alternately laminated, a large number of third plate bodies are sandwiched between the laminates due to the large number of laminated bodies constituting the plate heat exchanger. The thickness of the plate-type heat exchanger increases, whereas the number of the first plate and the second plate constituting one of the laminates, and the first plate constituting the other laminate and the like. Since the number of the second plate members is large, the number of the laminates constituting the plate heat exchanger can be reduced to a small number. The number of third plate member sandwiched between to be a small number, it is possible to sufficiently reduce the thickness of the plate heat exchanger.

  Furthermore, according to the plate type heat exchanger of the seventh aspect, since the hydrogen gas as the fluid to be cooled can be cooled, the plate heat exchanger is like a hydrogen gas station that supplies hydrogen gas to a hydrogen gas fuel cell vehicle or the like. Hydrogen gas, which is often supplied in parallel to a plurality of air supply targets at one location, can be supplied to each of the air supply targets in a suitably cooled state. Even in a place where the installation space is narrow, a plate-type heat exchanger can be installed to suitably cool hydrogen gas.

1 is a configuration diagram illustrating a configuration of a hydrogen gas supply system 100 according to an embodiment of the present invention. It is an external appearance perspective view of the heat exchanger 30 for hydrogen gas cooling concerning an embodiment of the invention. It is an explanatory view for explaining an internal structure of heat exchanger 30 for hydrogen gas cooling concerning an embodiment of the invention. It is an exploded perspective view of the heat exchanger 30 for hydrogen gas cooling concerning an embodiment of the invention. It is an external appearance perspective view of heat exchanger 30A for hydrogen gas cooling concerning other embodiments of the present invention. It is an explanatory view for explaining an internal structure of a heat exchanger 30A for cooling hydrogen gas according to another embodiment of the present invention. It is an exploded perspective view of heat exchanger 30A for hydrogen gas cooling concerning other embodiments of the present invention. It is an external appearance perspective view of the heat exchanger 30B for hydrogen gas cooling concerning still another embodiment of the present invention. It is an explanatory view for explaining an internal structure of a heat exchanger 30B for hydrogen gas cooling according to still another embodiment of the present invention. It is an exploded perspective view of the heat exchanger 30B for hydrogen gas cooling concerning still another embodiment of the present invention. It is an external appearance perspective view of heat exchanger 30C for hydrogen gas cooling concerning still another embodiment of the present invention. It is an exploded perspective view of heat exchanger 30C for hydrogen gas cooling concerning still another embodiment of the present invention.

  Hereinafter, an embodiment of a plate heat exchanger will be described with reference to the accompanying drawings.

  First, a configuration of a hydrogen gas supply system 100 including a hydrogen gas cooling heat exchanger 30 which is an example of a “plate type heat exchanger” will be described with reference to the accompanying drawings.

  A hydrogen gas supply system 100 shown in FIG. 1 is a facility for a hydrogen gas station that supplies hydrogen gas to supply targets X1, X2,... Such as a hydrogen gas fuel cell vehicle, and includes a hydrogen gas cooling device 1, It is configured to include a gas tank 2 and a dispenser 3. In the figure, in order to facilitate understanding of the configuration and operation of the hydrogen gas supply system 100, the hydrogen gas cooling device 1, the gas tank 2, the dispenser 3, and the hydrogen gas pipes 4a, 4b1, 4b2, 4c1, 4c2 are shown. And only the other components are not shown.

  The hydrogen gas cooling device 1 includes a refrigeration circuit 11, a brine tank 12, brine pipes 13a to 13d, liquid feed pumps 14a and 14b, a control unit 15, and a hydrogen gas cooling heat exchanger 30, and is an example of a “cooling fluid”. Cooling the hydrogen gas by heat exchange between the hydrogen gas, which is an example of the “fluid to be cooled,” and the brine by supplying the cooled brine to the heat exchanger 30 for cooling the hydrogen gas. It is configured to be able to. The flow rate control valve 16 shown in the figure and the brine pipes 13c and 13d shown by broken lines use hydrogen gas cooling heat exchangers 30A and 30B, etc., instead of the hydrogen gas cooling heat exchanger 30. The components used in configuring the hydrogen gas supply system 100 in addition to the above components are not described in this example.

  The refrigeration circuit 11 is a one-way refrigeration circuit, and includes a compressor 21, a condenser 22, an expansion valve 23, and an evaporator 24. As described later, heat exchange between Freon (refrigerant) and brine (cooling fluid) is performed. Is configured to cool the brine. The brine tank 12 is configured to store brine that is cooled by the refrigeration circuit 11 (evaporator 24) and supplied to the hydrogen gas cooling heat exchanger 30, as described later.

  The brine pipes 13a and 13b connect the evaporator 24 of the refrigeration circuit 11 and the brine tank 12 to each other. In this case, in the hydrogen gas cooling device 1 of the present embodiment, after the brine in the brine tank 12 is supplied to the evaporator 24 through the brine pipe 13a and cooled, the brine is guided to the brine tank 12 through the brine pipe 13b. Thus, a configuration is adopted in which the brine is circulated between the brine tank 12 and the evaporator 24.

  The brine pipes 13c and 13d connect the brine tank 12 and the heat exchanger 30 for cooling hydrogen gas to each other. In this case, in the hydrogen gas cooling device 1 of this example, the brine in the brine tank 12 is supplied to the hydrogen gas cooling heat exchanger 30 via the brine pipe 13c to be exchanged with hydrogen, and then the brine pipe 13d The brine is circulated between the brine tank 12 and the hydrogen gas cooling heat exchanger 30 by being guided to the brine tank 12 through the fin.

  The liquid feed pump 14a pumps the brine in the brine tank 12 toward the evaporator 24 under the control of the control unit 15, and the liquid feed pump 14b cools the brine in the brine tank 12 with hydrogen gas under the control of the control unit 15. To the heat exchanger 30. In this case, in the hydrogen gas cooling device 1 of the present embodiment, the liquid feed pump 14a pressure-feeds the brine in the brine tank 12 to the evaporator 24, and thereby the brine in the evaporator 24 (the brine cooled in the evaporator 24). Is guided to the brine tank 12, and the liquid feed pump 14b pumps the brine in the brine tank 12 to the hydrogen gas cooling heat exchanger 30 so that the brine in the hydrogen gas cooling heat exchanger 30 is 12 is adopted.

  Instead of the configuration of the hydrogen gas cooling device 1 described above, for example, the brine in the brine tank 12 is supplied to the refrigeration circuit 11 (evaporator 24) and cooled, and then directly supplied to the hydrogen gas cooling heat exchanger 30. In addition to cooling the hydrogen gas by cooling, the brine pipes 13d and 13c may be provided so that the brine whose temperature has been increased by cooling the hydrogen gas is collected in the brine tank 12 (not shown). Further, when used in an environment where there is no possibility of continuously cooling a large amount of hydrogen gas, that is, in an environment where there is no need to provide a large amount of brine, the brine tank 12 is unnecessary and the refrigeration circuit 11 (evaporator) is used. A configuration in which brine is directly circulated between 24) and the heat exchanger 30 for cooling hydrogen gas may be employed (not shown).

  The control unit 15 controls the hydrogen gas cooling device 1 overall. Specifically, the control unit 15 controls the compressor 21 at the time of performing the brine cooling process of cooling the brine by the refrigeration circuit 11 (evaporator 24) to compress a necessary and sufficient amount of refrigerant for cooling the brine. At the same time, the expansion valve 23 is controlled to supply the evaporator 24 with a necessary and sufficient amount of refrigerant for cooling the brine.

  The control unit 15 controls the liquid feed pump 14 a in parallel with the brine cooling process by the refrigeration circuit 11, thereby circulating the brine between the brine tank 12 and the evaporator 24, and controlling the brine in the brine tank 12. Is maintained at a specified temperature (a temperature suitable for cooling hydrogen gas). Further, the control unit 15 controls the liquid feed pump 14b to circulate the brine between the brine tank 12 and the hydrogen gas cooling heat exchanger 30, thereby moving the control unit 15 from the gas tank 2 toward the dispenser 3. The hydrogen gas is cooled by exchanging heat with brine in the hydrogen gas cooling heat exchanger 30.

  On the other hand, the heat exchanger 30 for cooling hydrogen gas is connected to the control valve 3a of the dispenser 3 via the hydrogen gas pipes 4b1 and 4b2, and is connected to the supply target X1 via the hydrogen gas pipe 4c1. It is connected to the air supply target X2 via the gas pipe 4c2. The hydrogen gas cooling heat exchanger 30 is connected to the brine tank 12 via brine pipes 13c and 13d.

  In this case, in the hydrogen gas supply system 100 of the present embodiment, the heat exchanger 30 for cooling hydrogen gas is installed in the dispenser 3 as one of the components of the hydrogen gas cooling device 1, and the control valve 3 a The hydrogen gas that flows toward the air supply target X1 or the air supply target X2 through the air is heated at a predetermined temperature by heat exchange with brine (for example, a temperature within a temperature range of −33 ° C. to −40 ° C.). ).

  As shown in FIGS. 2 to 4, the heat exchanger 30 for cooling hydrogen gas includes a brine plate 42 as an example of a “second plate” and a hydrogen gas plate as an example of a “first plate”. 43 is alternately laminated between the base plates 41 and 44 (an example of a “predetermined lamination order”). 13d and hydrogen gas pipes 4b1, 4b2, 4c1, 4c2, and a plurality of connecting tools (not shown) mounted on the base plate 44 so as to be connectable.

  In this case, in the hydrogen gas cooling heat exchanger 30 of the present embodiment, the base plate 41, the brine plate 42, the hydrogen gas plate 43, and the base plate 44 each correspond to a “plate”, and as shown in FIG. Each is formed in a rectangular shape in plan view by a metal plate such as stainless steel. In the following description, the base plate 41, the brine plate 42, the hydrogen gas plate 43, and the base plate 44 are also collectively referred to as "plates 41 to 44". In the actual heat exchanger 30 for cooling hydrogen gas, in order to avoid heat radiation and heat absorption, the laminated body of the plates 41 to 44 may be covered with a heat insulating material or housed in a heat insulating casing. (Not shown).

  As shown in FIGS. 3 and 4, the brine plate 42 has a pair of groove forming areas A2 and A2 in which a brine passage groove (an example of a “second fluid passage groove”) through which brine can pass is formed. (An example of the “second groove forming region”) is defined, and the heat insulating portion forming region A4 in which the slit S2 communicated with the slit S3 of the hydrogen gas plate 43 described later is formed by the two groove forming regions A2 and A2. Stipulated between. A bonding region A1 for bonding to the base plates 41 and 44 and the hydrogen gas plate 43 is defined around the groove forming region A2 and the heat insulating portion forming region A4.

  Note that FIG. 3 is a schematic diagram of a cross section taken along line BB in FIG. 2. In order to facilitate understanding of the internal structure of the hydrogen gas cooling heat exchanger 30, The thickness is shown thicker than the actual thickness. FIGS. 3 and 4 show a state in which one large groove (recess) is formed in the groove forming area A2 in order to facilitate understanding of the configuration of the brine plate 42. Has a plurality of narrow brine passage grooves formed side by side in the groove formation region A2.

  Also, as shown in FIG. 4, the brine plate 42 has a through hole Hia2 that is communicated with each brine passage groove so that brine can be introduced into each brine passage groove in the groove formation region A2, and a groove formation region. A through-hole Hoa2 is formed to communicate with each brine passage groove so that the brine can be discharged from each brine passage groove in A2. Further, in the brine plate 42, through-holes Hib21, Hob21, Hib22, Hob22 communicated with through-holes Hib31, Hob31, Hib32, Hob32 formed in the hydrogen gas plate 43 as described later.

  In this case, in the brine plate 42 of the hydrogen gas cooling heat exchanger 30 of the present example, each of the brine passage grooves in both the groove forming regions A2 and A2 communicates with one through hole Hia2 and one through hole Hoa2, respectively. Have been. Therefore, in the heat exchanger 30 for cooling hydrogen gas of the present embodiment, the brine introduced into the heat exchanger 30 for cooling hydrogen gas similarly passes through the respective brine passage grooves in both groove forming areas A2 and A2 (to the same degree). (At a moving speed) and discharged from the heat exchanger 30 for cooling hydrogen gas.

  As shown in FIGS. 3 and 4, the hydrogen gas plate 43 has a pair of groove forming regions in which hydrogen gas passage grooves (an example of “first fluid passage groove”) through which hydrogen gas can pass are formed. A3 and A3 (an example of “N1 = two first groove forming areas provided separately and independently”) are defined, and are communicated with the slit S2 formed in the brine plate 42 as described above. A heat insulating portion forming region A4 (an example of a “first heat insulating region”) in which a slit S3 (an example of a “first heat insulating portion”) that forms a vacuum heat insulating chamber Rs together with the slit S2 is formed. It is defined between both groove forming areas A3, A3. In addition, a bonding region A1 for bonding to the brine plate 42 is defined around the groove forming region A3 and the heat insulating portion forming region A4.

  3 and 4 show a state in which one large groove (recess) is formed in the groove forming area A3 in order to facilitate understanding of the configuration of the hydrogen gas plate 43. Has a plurality of narrow hydrogen gas passage grooves formed side by side in the groove forming region A3.

  As shown in FIG. 4, the hydrogen gas plate 43 is provided with through holes Hia3 and Hoa3 which communicate with the through holes Hia2 and Hoa2 formed in the brine plate 42 as described above. Further, the hydrogen gas plate 43 has a through hole Hib31 communicated with each hydrogen gas passage groove so that hydrogen gas can be introduced into each hydrogen gas passage groove in one groove formation area A3, and the other groove formation area. Hydrogen gas is discharged from the through holes Hib32 communicated with the hydrogen gas passage grooves so that hydrogen gas can be introduced into the hydrogen gas passage grooves in A3, and the hydrogen gas passage grooves in one groove formation area A3. The through-hole Hob31 communicated with each hydrogen gas passage groove as much as possible, and the hydrogen gas passage grooves in the other groove formation area A3 were connected to each hydrogen gas passage groove so as to be able to discharge hydrogen gas. A through hole Hob32 is formed.

  In this case, in the hydrogen gas plate 43 in the hydrogen gas cooling heat exchanger 30 of the present example, the hydrogen gas flow path from the through hole Hib31 to the through hole Hob31 and the hydrogen gas flow path from the through hole Hib32 to the through hole Hob32 are provided. Are independent of each other, a hydrogen gas passed through each hydrogen gas passage groove in one groove formation region A3, and a hydrogen gas passed through each hydrogen gas passage groove in the other groove formation region A3. Can be exchanged with brine without being mixed in the heat exchanger 30 for cooling hydrogen gas.

  As shown in FIGS. 2 and 4, through holes Hia4, Hoa4, Hib41, Hob41, Hib42, Hob42, and Hc4 are formed in the base plate 44. In this case, the through-hole Hia4 communicates with the through-hole Hia2 of the brine plate 42 and the through-hole Hia3 of the hydrogen gas plate 43, and a connector for connecting the brine pipe 13c is attached. The through-hole Hoa4 is communicated with the through-hole Hoa2 of the brine plate 42 and the through-hole Hoa3 of the hydrogen gas plate 43, and a connector for connecting the brine pipe 13d is attached.

  The through-hole Hib41 communicates with the through-hole Hib21 of the brine plate 42 and the through-hole Hib31 of the hydrogen gas plate 43, and has a fitting for connecting the hydrogen gas pipe 4b1. Further, the through-hole Hob41 communicates with the through-hole Hob21 of the brine plate 42 and the through-hole Hob31 of the hydrogen gas plate 43, and a connector for connecting the hydrogen gas pipe 4c1 is attached.

  The through-hole Hib42 is communicated with the through-hole Hib22 of the brine plate 42 and the through-hole Hib32 of the hydrogen gas plate 43, and has a fitting for connecting the hydrogen gas pipe 4b2. Further, the through-hole Hob42 is communicated with the through-hole Hob22 of the brine plate 42 and the through-hole Hob32 of the hydrogen gas plate 43, and a connector for connecting the hydrogen gas pipe 4c2 is attached.

  Further, as shown in FIG. 3, the through hole Hc4 is communicated with the slit S2 of the brine plate 42 and the slit S3 of the hydrogen gas plate 43. As an example, a valve (not shown) is mounted in the through hole Hc4. Thereby, as described later, in the hydrogen gas cooling heat exchanger 30 of the present embodiment, the air in the vacuum insulation chamber Rs formed by the slits S2 and S3 is evacuated, and the vacuum insulation chamber Rs is evacuated. By moving the valve to the closed state in the state, the vacuum state in the vacuum insulation chamber Rs is maintained.

  In this case, in the heat exchanger 30 for cooling hydrogen gas of the present embodiment, one of the heat-insulating portion forming regions A4 defined between the pair of groove forming regions A3 and A3 adjacent to each other in the plate surface direction of the hydrogen gas plate 43 is provided. A "first heat insulating portion" that insulates the hydrogen gas passing through each hydrogen gas passage groove in the groove formation region A3 and the hydrogen gas passing through each hydrogen gas passage groove in the other groove formation region A3. Is formed to form a vacuum heat insulating chamber Rs.

  Thereby, in the hydrogen gas cooling heat exchanger 30 of the present embodiment, each hydrogen in the other groove forming area A3 is heated by the heat of the hydrogen gas passing through each hydrogen gas passing groove in the one groove forming area A3. The temperature of the hydrogen gas passing through the gas passage groove is increased, or the heat of the hydrogen gas passing through each hydrogen gas passage groove in the other groove formation area A3 causes the temperature of the hydrogen gas passing through the one groove formation area A3 to increase. The situation where the temperature of the hydrogen gas passing through each hydrogen gas passage groove is raised is avoided.

  Next, an example of a method of manufacturing the hydrogen gas cooling heat exchanger 30 will be described with reference to the accompanying drawings.

  When manufacturing the heat exchanger 30 for cooling hydrogen gas, first, a lamination process of laminating the plate bodies 41 to 44 in a “predetermined lamination order” is performed. Specifically, as an example, first, after placing the base plate 41 on a stacking jig (positioning tool) (not shown), the brine plate 42 is placed on the base plate 41 with the formation surface of the brine passage groove facing upward. And a hydrogen gas plate 43 is laminated on the brine plate 42 with the surface for forming the hydrogen gas passage grooves facing upward. As a result, a set of stacked members including the brine plate 42 and the hydrogen gas plate 43 is stacked on the base plate 41.

  Next, the brine plates 42 and the hydrogen gas plates 43 are alternately stacked on the hydrogen gas plates 43 in the above-described laminate according to the capacity required of the hydrogen gas cooling heat exchanger 30. Subsequently, on the uppermost hydrogen gas plate 43, the brine plate 42 is laminated with the formation surface of the brine passage groove facing upward, and the base plate 44 is laminated thereon. Thus, the lamination process is completed.

  In a state where the lamination processing is completed, as shown in FIG. 3, each bonding region A1 of the brine plate 42 and each bonding region A1 of the hydrogen gas plate 43 overlap in the laminating direction of the respective plates 41 to 44, and the brine plate The respective groove forming regions A2 of the hydrogen gas plate 43 overlap with the respective groove forming regions A3 of the hydrogen gas plate 43 in the stacking direction of the plates 41 to 44, and the heat insulating portions A4 of the brine plate 42 and the heat insulating portions of the hydrogen gas plate 43. The formation region A4 is in a state of being overlapped in the laminating direction of the respective plates 41 to 44.

  Further, the through-hole Hia2 of the brine plate 42, the through-hole Hia3 of the hydrogen gas plate 43, and the through-hole Hia4 of the base plate 44 communicate with each other in the stacking direction of the plates 41 to 44, and the through-hole of the brine plate 42. Hoa2, the through-hole Hoa3 of the hydrogen gas plate 43, and the through-hole Hoa4 of the base plate 44 are in a state of communicating with each other in the stacking direction of the plate bodies 41 to 44.

  Further, the through-hole Hib21 of the brine plate 42, the through-hole Hib31 of the hydrogen gas plate 43, and the through-hole Hib41 of the base plate 44 communicate with each other in the stacking direction of the respective plates 41 to 44, and the through-hole of the brine plate 42. The Hob 21, the through-hole Hob 31 of the hydrogen gas plate 43, and the through-hole Hob 41 of the base plate 44 communicate with each other in the stacking direction of the plates 41 to 44. Further, the through-hole Hib22 of the brine plate 42, the through-hole Hib32 of the hydrogen gas plate 43, and the through-hole Hib42 of the base plate 44 communicate with each other in the stacking direction of the plate bodies 41 to 44, and the through-hole of the brine plate 42. The Hob 22, the through hole Hob 32 of the hydrogen gas plate 43, and the through hole Hob 42 of the base plate 44 communicate with each other in the stacking direction of the plate bodies 41 to 44.

  Further, the slit S2 of the brine plate 42, the slit S3 of the hydrogen gas plate 43, and the through-hole Hc4 of the base plate 44 are in communication with each other in the stacking direction of the plates 41 to 44, and the vacuum insulation formed by the slits S2 and S3. The state where the chamber Rs is formed is obtained.

  Subsequently, the stacked body of the respective plate bodies 41 to 44 stacked by the above-described stacking process is accommodated in a not-shown bonding processing device, and a bonding process (diffusion bonding process) is performed. Specifically, in the processing apparatus, the laminate is pressed in the thickness direction of each of the plates 41 to 44 (the laminating direction of each of the plates 41 to 44), and the temperature within a predetermined bonding temperature range is set. While the laminate is being heated, the inside of the processing apparatus is evacuated so that the degree of vacuum is within a predetermined degree of vacuum.

  In addition, when the plate bodies 41 to 44 are joined with a sufficient joining force by continuing the pressurization, heating, and evacuation of the processing apparatus for a predetermined processing time, the evacuation is performed. By stopping the operation, the pressure inside the processing apparatus is increased to substantially the same level as the atmospheric pressure, and by stopping the heating of the stacked body, the temperature of the stacked body is lowered to room temperature. Further, pressurization is stopped in a state where the temperature of the laminate is sufficiently lowered. Thereby, the joining process is completed, and the main body 31 is completed as shown in FIGS.

  Next, a valve (not shown) is attached to the through hole Hc4 of the base plate 41, and a connector (not shown) is attached to each of the through holes Hia4, Hoa4, Hib41, Hob41, Hib42, and Hob42 of the base plate 44. Subsequently, the valve attached to the through hole Hc4 is shifted to the open state to exhaust the air in the vacuum insulation chamber Rs, and then the valve is shifted to the closed state. Thereby, the vacuum state in the vacuum insulation chamber Rs is maintained, and the manufacture of the hydrogen gas cooling heat exchanger 30 is completed.

  Next, the operation of the hydrogen gas cooling device 1 when the hydrogen gas supply system 100 supplies hydrogen gas to the supply targets X1 and X2 (hydrogen gas cooling process in the hydrogen gas cooling heat exchanger 30) is attached. This will be described with reference to the drawings.

  In the hydrogen gas supply system 100, when the hydrogen gas cooling process for cooling the hydrogen gas is not performed in the hydrogen gas cooling heat exchanger 30, the hydrogen gas is supplied between the brine tank 12 and the hydrogen gas cooling heat exchanger 30. And a small amount of brine is circulated. Specifically, when the hydrogen gas cooling process is not performed, the control unit 15 controls the liquid feed pump 14b to perform the hydrogen gas cooling process from the brine tank 12 through the brine pipe 13c at predetermined time intervals. A small amount of brine is intermittently supplied to the heat exchanger 30 (preliminary cooling of the hydrogen gas cooling heat exchanger 30).

  At this time, the supplied brine is introduced from the through hole Hia4 of the base plate 44 to the communicating portion of each of the through holes Hia2 and Hia3, and the brine passage grooves formed in the groove forming areas A2 and A2 of each of the brine plates 42. After passing through the through-holes Hoa2 and Hoa3 and flowing into the communicating portion between the through-holes Hoa2 and Hoa3, the water is discharged from the through-hole Hoa4 of the base plate 44 to the brine pipe 13d and collected by the brine tank 12. Thereby, the state in which the temperature of the hydrogen gas cooling heat exchanger 30 is lower than the ambient temperature is suitably maintained, and the state in which the brine in the brine pipe 13c rises in the brine pipe 13c (that is, the hydrogen gas cooling (A state in which it is difficult to immediately supply sufficiently cooled brine to the heat exchanger 30).

  Further, the control unit 15 controls the temperature of the brine in the brine tank 12 in parallel with the above-described process (preliminary cooling process) of circulating the brine between the brine tank 12 and the hydrogen gas cooling heat exchanger 30. Then, brine cooling processing for cooling the brine in the brine tank 12 by the refrigeration circuit 11 is continuously performed. Thereby, the temperature of the brine in the brine tank 12 is maintained at a temperature within a temperature range suitable for cooling the hydrogen gas.

  On the other hand, for example, when hydrogen gas is supplied (filled) to the supply target X1, the hydrogen gas moved from the gas tank 2 toward the supply target X1 is exchanged with the brine in the hydrogen gas cooling heat exchanger 30. Cooled by. Specifically, the control valve 3a supplies the hydrogen gas supplied from the brine tank 12 via the hydrogen gas pipe 4a to the hydrogen gas cooling heat exchanger 30 via the hydrogen gas pipe 4b1 under the control of a controller (not shown). I care. At this time, an air supply start signal is output from the controller to the control unit 15 of the hydrogen gas cooling device 1 in conjunction with the start of the movement of the hydrogen gas from the gas tank 2.

  In response to this, in the hydrogen gas cooling device 1, the control unit 15 controls the liquid feed pump 14b to increase the amount of brine supplied from the brine tank 12 to the hydrogen gas cooling heat exchanger 30. At this time, an amount of brine required for cooling the hydrogen gas is supplied from the brine tank 12 to the heat exchanger 30 for cooling the hydrogen gas via the brine pipe 13c, and hydrogen is supplied from the connector connected to the through hole Hia4. It is introduced into the gas cooling heat exchanger 30. Further, the brine introduced into the hydrogen gas cooling heat exchanger 30 moves through the through holes Hia2, Hia3,... Into the brine passage grooves in the groove forming area A2 of each brine plate 42.

  On the other hand, as described above, the hydrogen gas supplied to the hydrogen gas cooling heat exchanger 30 from the control valve 3a via the hydrogen gas pipe 4b1 is supplied to the hydrogen gas cooling heat exchanger from the connector connected to the through hole Hib41. It is introduced into the exchanger 30. Further, the hydrogen gas introduced into the hydrogen gas cooling heat exchanger 30 passes through the through holes Hib21, Hib31,..., And forms one groove forming area A3 of each hydrogen gas plate 43 (in this example, the right side of FIG. It moves into the hydrogen gas passage groove in the groove forming area A3). Thereby, the brine moving in the brine passage groove of each brine plate 42 and the hydrogen gas moving in the hydrogen gas passage groove in one groove forming area A3 of each hydrogen gas plate 43 are formed. The hydrogen gas is cooled by heat exchange.

  Further, the hydrogen gas cooled by heat exchange with the brine is discharged from the hydrogen gas passage grooves in one groove forming area A3 of each hydrogen gas plate 43 to the through holes Hob31, Hob21,... And connected to the through holes Hob41. The supply target X1 is supplied from the connected fitting via the hydrogen gas pipe 4c1. As a result, the hydrogen gas whose temperature has been sufficiently lowered in the hydrogen gas cooling heat exchanger 30 is filled in the fuel tank (gas tank) of the supply target X1. As a result, the charging efficiency of hydrogen gas into the air supply target X1 can be sufficiently improved. Further, the brine whose temperature has increased due to heat exchange with the hydrogen gas is discharged from the brine passage grooves of each brine plate 42 to the through holes Hoa2, Hoa3,..., And is connected to the brine pipe 13d from the connector connected to the through hole Hoa4. And collected in the brine tank 12.

  In this case, in the hydrogen gas supply system 100 of the present example, the supply of the hydrogen gas to the supply target X2 may be performed before the supply (filling) of the hydrogen supply to the supply target X1 is completed. is there. At this time, the control valve 3a supplies the hydrogen gas supplied from the brine tank 12 via the hydrogen gas pipe 4a to the hydrogen gas cooling heat exchanger 30 via the hydrogen gas pipe 4b2 under the control of the controller. . Further, in this example in which the supply of the hydrogen gas to the supply target X1 is started before the supply of the hydrogen gas to the supply target X2, the control unit 15 supplies the liquid in response to the supply start signal. The pump 14b is controlled to further increase the amount of brine supplied from the brine tank 12 to the hydrogen gas cooling heat exchanger 30.

  On the other hand, as described above, the hydrogen gas supplied from the control valve 3a to the hydrogen gas cooling heat exchanger 30 via the hydrogen gas pipe 4b2 is supplied from the connecting device connected to the through hole Hib42. It is introduced into the exchanger 30. Further, the hydrogen gas introduced into the hydrogen gas cooling heat exchanger 30 passes through the through holes Hib22, Hib32,... And the other groove forming area A3 of each hydrogen gas plate 43 (in this example, the left side of FIG. It moves into the hydrogen gas passage groove in the groove forming area A3). Thereby, the brine moving in the brine passage groove of each brine plate 42 and the hydrogen gas moving in the hydrogen gas passage groove in the other groove forming area A3 of each hydrogen gas plate 43 are formed. The hydrogen gas is cooled by heat exchange.

  The hydrogen gas cooled by heat exchange with the brine is discharged from the hydrogen gas passage grooves in the other groove forming area A3 of each hydrogen gas plate 43 to the through holes Hob32, Hob22,... And is connected to the through holes Hob42. The supply target X2 is supplied from the connected fitting via the hydrogen gas pipe 4c2. Thereby, the hydrogen gas whose temperature has been sufficiently lowered in the hydrogen gas cooling heat exchanger 30 is filled in the fuel tank (gas tank) of the supply target X2. As a result, the supply of the hydrogen gas to the supply target X2 is performed at a sufficiently high filling efficiency without stopping the supply (filling) of the hydrogen gas to the supply target X1.

  In this case, when the hydrogen gas is supplied (filled) in parallel to the supply objects X1 and X2 as described above, the difference in the supply start timing of the hydrogen gas and the fuel tank of the supply objects X1 and X2 (Gas tank) due to the difference in fillable capacity (difference in empty capacity of tank and difference in remaining chargeable capacity due to difference in remaining amount of hydrogen gas before the start of supply) The pressure and the flow rate of the hydrogen gas supplied from the system 100 to the supply targets X1 and X2 are different from each other. Therefore, the temperature of the hydrogen gas moving toward the air supply target X1 and the temperature of the hydrogen gas moving toward the air supply target X2 are different, and one of the hydrogen gas plates 43 The temperature in the vicinity of the groove forming area A3 is different from the temperature in the vicinity of the other groove forming area A3 of each hydrogen gas plate 43.

  However, in the heat exchanger 30 for cooling hydrogen gas of the present example, the heat insulating portion forming region A4 is provided between the groove forming regions A3 and A3 of each hydrogen gas plate 43 to form the slit S3, and each hydrogen gas plate 43 has In each of the brine plates 42 joined to the gas plate 43, a slit S2 is formed in the heat insulating portion forming region A4 that overlaps the heat insulating portion forming region A4 of the hydrogen gas plate 43 in the stacking direction. Are located between the groove forming areas A3 and A3.

  Therefore, in the hydrogen gas cooling heat exchanger 30 of the present embodiment, the hydrogen gas passing through the hydrogen gas passage groove in one groove forming area A3 in each hydrogen gas plate 43 and the other hydrogen gas in the hydrogen gas plate 43 Not only is the hydrogen gas passing through the hydrogen gas passage groove in the groove formation region A3 insulated by the vacuum heat insulation chamber Rs, but also the brine passage groove in one groove formation region A2 in each brine plate 42. And the brine passing through the brine passage groove in the other groove forming area A2 of each brine plate 42 are insulated by the vacuum insulation chamber Rs.

  Thereby, in the hydrogen gas supply system 100 (hydrogen gas cooling device 1) of the present example including the heat exchanger 30 for cooling hydrogen gas, the hydrogen gas supply system 100 is sufficiently separated so as not to be thermally affected from each other. The hydrogen gas supplied to the supply target X1 and the hydrogen gas supplied to the supply target X2 are separately cooled by the two heat exchangers arranged in the same manner. The hydrogen gas can be suitably cooled independently and independently.

  Thereafter, for example, when the supply of the hydrogen gas to the supply target X1 is completed, the controller outputs a supply end signal to the control unit 15 of the hydrogen gas cooling device 1. Accordingly, the control unit 15 reduces the amount of brine supplied from the brine tank 12 to the heat exchanger 30 for cooling hydrogen gas.

  Further, when the supply of the hydrogen gas to the supply target X2 is completed after the supply of the hydrogen gas to the supply target X1, the control unit 15 sends the hydrogen gas cooling heat from the brine tank 12 in response to the supply completion signal from the controller. The amount of brine supplied to the exchanger 30 is further reduced, the above-described brine circulation process is started, and the above-described process of maintaining the brine in the brine tank 12 within a specified temperature range is continued.

  As described above, in the hydrogen gas cooling heat exchanger 30, the hydrogen gas plate 43 having the groove forming area A3 in which the hydrogen gas passage grooves through which the hydrogen gas can pass is formed separately and independently. It has N1 (in this example, N1 = 2) groove forming areas A3, and allows heat exchange with brine without mixing hydrogen gases passing through the hydrogen gas passage grooves in each groove forming area A3. And a hydrogen gas passing through a hydrogen gas passage groove in one groove formation region A3 and a hydrogen gas passage groove in the other groove formation region A3 between adjacent groove formation regions A3 and A3. A heat-insulating portion forming area A4 in which a slit S3 (vacuum heat-insulating chamber Rs) that insulates hydrogen gas to be heated is provided.

  Therefore, according to the heat exchanger 30 for cooling hydrogen gas, the heat insulating portion provided between the groove forming regions A3 and A3 despite the N1 = 2 groove forming regions A3 and A3 being sufficiently close to each other. Hydrogen gas passing through the hydrogen gas passage groove in one groove formation region A3 and hydrogen gas passing through the hydrogen gas passage groove in the other groove formation region A3 by the formation region A4 (vacuum insulation chamber Rs). Can be suitably insulated, N1 = two kinds of hydrogen gas can be suitably cooled in parallel, and N1 = N1 = 2 using two separate and independent “plate heat exchangers”. Compared with a configuration in which two types of hydrogen gas are cooled, the space occupied by the “plate heat exchanger” required for cooling each hydrogen gas can be sufficiently reduced.

  According to the hydrogen gas cooling heat exchanger 30, the hydrogen gas as the "fluid to be cooled" can be cooled, so that the hydrogen gas station for supplying the hydrogen gas to the hydrogen gas fuel cell vehicle or the like can be used. As described above, hydrogen gas that is often supplied in parallel to a plurality of supply targets X1 and X2 at one location is supplied in a state where each supply target X1 and X2 is appropriately cooled. In addition, even in a place where the space where the equipment can be installed is narrow, the hydrogen gas cooling heat exchanger 30 can be installed to appropriately cool the hydrogen gas.

  Next, another embodiment of the “plate heat exchanger” will be described with reference to the accompanying drawings.

  Components having the same functions as those of the above-described hydrogen gas cooling heat exchanger 30 are denoted by the same reference numerals, and redundant description will be omitted. As for the components other than the hydrogen gas cooling heat exchanger 30 in the hydrogen gas supply system 100 (hydrogen gas cooling device 1), as described above, in addition to the above-described configuration, the flow rate adjustment valve 16 and The difference is that the brine pipes 13c and 13d indicated by broken lines are used, but the other components are the same as those in the above-described example, and thus the duplicated description will be omitted. In this case, the flow control valve 16 is controlled by the control unit 15 to control the amount of the brine supplied to the hydrogen gas cooling heat exchanger 30 via the brine pipe 13c shown by a solid line in FIG. The amount of brine supplied to the hydrogen gas cooling heat exchanger 30 via the brine pipe 13c is adjusted.

  On the other hand, the hydrogen gas cooling heat exchanger 30A shown in FIGS. 1, 5 to 7 is another example of the "plate type heat exchanger", and as shown in FIG. In the same manner as in the device 30, it is connected to the control valve 3a of the dispenser 3 via hydrogen gas pipes 4b1 and 4b2, connected to the supply target X1 via the hydrogen gas pipe 4c1, and via the hydrogen gas pipe 4c2. Connected to the air supply target X2. The heat exchanger 30A for cooling hydrogen gas is different from the heat exchanger 30 for cooling hydrogen gas described above in that brine pipes 13c and 13d indicated by solid lines, brine pipes 13c and 13d indicated by broken lines, and a flow control valve 16 are provided. Connected to the brine tank 12 via the

  As shown in FIGS. 5 to 7, the hydrogen gas cooling heat exchanger 30 </ b> A is a brine plate that is another example of the “second plate” instead of the brine plate 42 in the hydrogen gas cooling heat exchanger 30. 42a, and a hydrogen gas plate 43a, which is another example of the “first plate body”, in place of the hydrogen gas plate 43 in the hydrogen gas cooling heat exchanger 30, and the hydrogen gas cooling heat exchanger 30 The main body portion 31a is provided with a base plate 44a in place of the base plate 44 in FIG.

  More specifically, the hydrogen gas cooling heat exchanger 30A is formed by alternately stacking the brine plates 42a and the hydrogen gas plates 43a between the base plates 41 and 44a (an example of a "predetermined stacking order"). A main body part 31a whose surfaces are joined together and integrated, and a plurality of connecting tools mounted on the base plate 44a so that the brine pipes 13c and 13d and the hydrogen gas pipes 4b1, 4b2, 4c1 and 4c2 can be connected to the main body part 31a ( (Not shown).

  In this case, in the hydrogen gas cooling heat exchanger 30A of the present embodiment, the base plate 41, the brine plate 42a, the hydrogen gas plate 43a, and the base plate 44a each correspond to a “plate”, and as shown in FIG. Each is formed in a rectangular shape in plan view by a metal plate such as stainless steel. In the following description, the base plate 41, the brine plate 42a, the hydrogen gas plate 43a, and the base plate 44a are also collectively referred to as "plates 41, 42a to 44a".

  As shown in FIGS. 6 and 7, the brine plate 42a has a pair of groove forming areas A2 and A2 ("N2 = 2 provided separately and independently") in which the brine passage grooves through which the brine can pass are formed. An example) of the second groove forming region is defined, and is communicated with a slit S3 formed in the hydrogen gas plate 43a as described later to constitute a vacuum insulation chamber Rs in cooperation with the slit S3. A heat insulating portion forming region A4 (an example of a “second heat insulating region”) in which a slit S2 (an example of a “second heat insulating portion”) is formed between the groove forming regions A2 and A2 (“an adjacent second heat insulating region”). Between the groove forming regions ”. Further, a bonding region A1 is defined around the groove forming region A2 and the heat insulating portion forming region A4.

  Note that FIG. 6 is a schematic view of a cross section taken along the line BA-BA in FIG. 5, and in order to facilitate understanding of the internal structure of the heat exchanger 30 </ b> A for cooling hydrogen gas, each of the plate bodies 41 and 42 a. 44a is shown thicker than the actual thickness. FIGS. 6 and 7 show a state in which one large groove (recess) is formed in the groove forming region A2 in order to facilitate understanding of the configuration of the brine plate 42a. Has a plurality of narrow brine passage grooves formed side by side in the groove formation region A2.

  In the brine plate 42a, a through hole Hia21 communicated with each of the brine passage grooves so that the brine can be introduced into each of the brine passage grooves in the one groove formation area A2, and each of the through holes Hia21 in the one groove formation area A2. The through holes Hoa21 communicated with the brine passage grooves so that the brine can be discharged from the brine passage grooves, and the brine passage grooves can be introduced into the brine passage grooves in the other groove forming area A2 so that the brine can be introduced. The formed through-hole Hia22 and the through-hole Hoa22 communicated with each of the brine passage grooves so that the brine can be discharged from each of the brine passage grooves in the other groove forming area A2 are formed. Further, in the brine plate 42a, through holes Hib21, Hob21, Hib22, Hob22 which are communicated with through holes Hib31, Hob31, Hib32, Hob32 formed in the hydrogen gas plate 43a as described later are formed.

  In this case, in the brine plate 42a of the heat exchanger 30A for cooling hydrogen gas of the present example, the brine flow path from the through hole Hia21 to the through hole Hoa21 and the brine flow path from the through hole Hia22 to the through hole Hoa22 are separately independent. The brine passed through each of the brine passage grooves in one groove forming area A2 and the brine passed through each of the brine passage grooves in the other groove formation area A2 have a heat exchange for hydrogen gas cooling. The heat exchange with the hydrogen gas is possible without being mixed in the vessel 30A.

  In the hydrogen gas plate 43a, a pair of groove forming regions A3 and A3 in which hydrogen gas passage grooves through which hydrogen gas can pass are formed (“N1 = 2 first grooves formed separately and independently provided”). Another example of the "region") is defined, and the slit S3 ("" which is communicated with the slit S2 formed in the brine plate 42a and forms the vacuum insulation chamber Rs together with the slit S2 as described above. A heat insulating portion forming region A4 (another example of the “first heat insulating region”) in which the “first heat insulating portion” is formed is defined between the two groove forming regions A3 and A3. Further, a joining area A1 for joining to the brine plate 42a is defined around the groove forming area A3 and the heat insulating section forming area A4.

  6 and 7 show a state in which one large groove (recess) is formed in the groove forming region A3 in order to facilitate understanding of the configuration of the hydrogen gas plate 43a. Has a plurality of narrow hydrogen gas passage grooves formed side by side in the groove forming region A3.

  Further, in the hydrogen gas plate 43a, the through holes Hia31, Hia32, Hoa31, Hoa32 communicated with the through holes Hia21, Hia22, Hoa21, Hoa22 formed in the brine plate 42a as described above. Further, through holes Hib31, Hib32, Hob31, Hob32 are formed in the hydrogen gas plate 43a in the same manner as the hydrogen gas plate 43 described above.

  In this case, in the hydrogen gas plate 43a in the hydrogen gas cooling heat exchanger 30A of the present embodiment, the hydrogen gas flow path from the through hole Hib31 to the through hole Hob31 and the through gas hole Hib32 are similar to the hydrogen gas plate 43 described above. And a hydrogen gas flow path from the through hole Hob32 to the through hole Hob32 are separated and independent, and a hydrogen gas that is allowed to pass through each hydrogen gas passage groove in one groove forming area A3 and a hydrogen gas that flows in the other groove forming area A3 The heat exchange with the brine is possible without being mixed with the hydrogen gas passed through the gas passage groove in the hydrogen gas cooling heat exchanger 30A.

  Through holes Hia41, Hoa41, Hia42, Hoa42, Hib41, Hob41, Hib42, Hob42, Hc4 are formed in the base plate 44a. In this case, the through-hole Hia41 communicates with the through-hole Hia21 of the brine plate 42a and the through-hole Hia31 of the hydrogen gas plate 43a, and a connector for connecting one of the brine pipes 13c is attached. The through-hole Hoa41 is communicated with the through-hole Hoa21 of the brine plate 42 and the through-hole Hoa31 of the hydrogen gas plate 43, and has a fitting for connecting one of the brine pipes 13d.

  The through-hole Hia42 is communicated with the through-hole Hia22 of the brine plate 42a and the through-hole Hia32 of the hydrogen gas plate 43a, and has a fitting for connecting the other brine pipe 13c. Further, the through hole Hoa42 is communicated with the through hole Hoa22 of the brine plate 42 and the through hole Hoa32 of the hydrogen gas plate 43, and a connector for connecting the other brine pipe 13d is attached.

  The through-hole Hib41 is communicated with the through-hole Hib21 of the brine plate 42a and the through-hole Hib31 of the hydrogen gas plate 43a, and has a fitting for connecting the hydrogen gas pipe 4b1. Further, the through-hole Hob41 communicates with the through-hole Hob21 of the brine plate 42a and the through-hole Hob31 of the hydrogen gas plate 43a, and a connector for connecting the hydrogen gas pipe 4c1 is attached.

  The through-hole Hib42 is communicated with the through-hole Hib22 of the brine plate 42a and the through-hole Hib32 of the hydrogen gas plate 43a, and has a fitting for connecting the hydrogen gas pipe 4b2. Further, the through-hole Hob42 is communicated with the through-hole Hob22 of the brine plate 42a and the through-hole Hob32 of the hydrogen gas plate 43a, and a connector for connecting the hydrogen gas pipe 4c2 is attached.

  The through hole Hc4 is communicated with the slit S2 of the brine plate 42a and the slit S3 of the hydrogen gas plate 43a. As an example, a valve (not shown) is mounted in the through hole Hc4. Accordingly, as described later, in the hydrogen gas cooling heat exchanger 30A of the present embodiment, the air in the vacuum heat insulating chamber Rs formed by the slits S2 and S3 is evacuated, and the vacuum heat insulating chamber Rs is evacuated. By moving the valve to the closed state in the state, the vacuum state in the vacuum insulation chamber Rs is maintained.

  In this case, in the hydrogen gas cooling heat exchanger 30A of this example, one of the heat insulating portion forming regions A4 defined between the pair of groove forming regions A2 and A2 adjacent to each other in the plate surface direction of the brine plate 42a. A slit S2 as a “second heat insulating portion” that insulates the brine passing through each brine passage groove in the groove formation region A2 and the brine passing through each brine passage groove in the other groove formation region A2. Thus, a vacuum heat insulating chamber Rs is formed.

  Thereby, in the heat exchanger 30A for cooling hydrogen gas of the present example, the heat of the brine passing through each of the brine passage grooves in the one groove formation area A2 causes the heat of the brine to pass through each brine in the other groove formation area A2. The temperature of the brine passing through the groove is raised, or the heat of the brine passing through the brine passage grooves in the other groove formation area A2 causes the brine passage grooves in one groove formation area A2 to be heated. The situation where the temperature of the passing brine is raised is avoided.

  Further, in the hydrogen gas cooling heat exchanger 30A of the present embodiment, similarly to the above-described hydrogen gas cooling heat exchanger 30, a pair of groove forming regions A3, A3 adjacent in the plate surface direction of the hydrogen gas plate 43a is formed. A hydrogen gas passing through each hydrogen gas passage groove in one groove formation area A3 and a hydrogen gas passage groove in the other groove formation area A3 pass through the heat insulation portion formation area A4 defined therebetween. A slit S3 is formed as a “first heat insulating portion” that insulates the hydrogen gas to be formed, and forms a vacuum heat insulating chamber Rs.

  Thereby, in the hydrogen gas cooling heat exchanger 30A of this example, each hydrogen in the other groove forming area A3 is heated by the heat of the hydrogen gas passing through each hydrogen gas passing groove in the one groove forming area A3. The temperature of the hydrogen gas passing through the gas passage groove is increased, or the heat of the hydrogen gas passing through each hydrogen gas passage groove in the other groove formation area A3 causes the temperature of the hydrogen gas passing through one of the groove formation areas A3 to increase. The situation where the temperature of the hydrogen gas passing through each hydrogen gas passage groove is raised is avoided.

  Further, in the hydrogen gas cooling heat exchanger 30A of this example, the brine plate 42 includes N2 = N = 2 groove forming areas A2, and the hydrogen gas plate 43 includes N1 = N = 2 groove forming areas. In addition to the region A3, the M = 1st groove forming region A2 and the M = 1st groove forming region A3 overlap with each other in the stacking direction of the plate bodies 41, 42a to 44a, and M = 2nd groove forming region. The brine plates 42 and the hydrogen gas plate 43 are stacked between the base plates 41 and 44a such that the groove formation region A2 and the M = second groove formation region A3 overlap in the stacking direction of the plate bodies 41, 42a to 44a. ing.

  As a result, in the hydrogen gas cooling heat exchanger 30A of this example, each of the hydrogen gas passages in the other groove forming area A3 is caused by the heat of the brine passing through each of the brine passage grooves in the one groove forming area A2. The temperature of the hydrogen gas passing through the groove is increased or the heat of the brine passing through the brine passage grooves in the other groove formation area A2 causes the passage of each hydrogen gas in one groove formation area A3. The situation where the temperature of the hydrogen gas passing through the groove is raised is avoided.

  The method for manufacturing the heat exchanger for hydrogen gas cooling 30A is the same as the method for manufacturing the heat exchanger for hydrogen gas cooling 30 described above, and thus the description thereof is omitted.

  Next, the operation of the hydrogen gas cooling device 1 (hydrogen gas cooling process in the hydrogen gas cooling heat exchanger 30A) when the hydrogen gas supply system 100 supplies hydrogen gas to the supply targets X1 and X2 will be described. This will be described with reference to the accompanying drawings.

  The pre-cooling process of the hydrogen gas cooling heat exchanger 30A is the same as the pre-cooling process of the hydrogen gas cooling heat exchanger 30 described above. During the pre-cooling process of the gas supply system 100, the flow regulating valve 16 supplies the same amount of brine to both the brine pipe 13c shown by the solid line and the brine pipe 13c shown by the broken line.

  On the other hand, when the hydrogen gas supply system 100 including the hydrogen gas cooling heat exchanger 30A supplies (fills) hydrogen gas to the supply target X1, for example, the hydrogen gas is supplied from the gas tank 2 toward the supply target X1. The transferred hydrogen gas is cooled by exchanging with the brine in the hydrogen gas cooling heat exchanger 30A. Specifically, the control valve 3a supplies the hydrogen gas supplied from the brine tank 12 via the hydrogen gas pipe 4a to the hydrogen gas cooling heat exchanger 30A via the hydrogen gas pipe 4b1 under the control of a controller (not shown). I care. At this time, an air supply start signal is output from the controller to the control unit 15 of the hydrogen gas cooling device 1 in conjunction with the start of the movement of the hydrogen gas from the gas tank 2.

  In response to this, in the hydrogen gas cooling device 1, the control unit 15 controls the liquid feed pump 14b and the flow rate adjustment valve 16 so that the brine pipe connected to the through hole Hia41 in the hydrogen gas cooling heat exchanger 30A. Increase the amount of brine supplied to 13c. At this time, an amount of brine necessary for cooling the hydrogen gas is supplied from the brine tank 12 to the hydrogen gas cooling heat exchanger 30A via the brine pipe 13c, and hydrogen is supplied from the connector connected to the through hole Hia41. The heat is introduced into the gas cooling heat exchanger 30A. Further, the brine introduced into the hydrogen gas cooling heat exchanger 30A is connected to one of the groove forming areas A2 in the respective brine plates 42a through the through holes Hia21, Hia31,. It moves into the brine passage groove in the area A2).

  On the other hand, as described above, the hydrogen gas supplied from the control valve 3a to the hydrogen gas cooling heat exchanger 30A via the hydrogen gas pipe 4b1 is supplied from the connector connected to the through hole Hib41 to the hydrogen gas cooling heat exchanger. It is introduced into the exchanger 30A. Further, the hydrogen gas introduced into the heat exchanger 30A for cooling the hydrogen gas is supplied through the through holes Hib21, Hib31,... To one groove forming area A3 of each hydrogen gas plate 43a (in the present example, the right side of FIG. It moves into the hydrogen gas passage groove in the groove forming area A3). Thereby, the brine moving in the brine passage groove in one groove forming region A2 in each brine plate 42a and the hydrogen gas passage groove in one groove forming region A3 in each hydrogen gas plate 43a are moved. The hydrogen gas is cooled by heat exchange with the moving hydrogen gas.

  Further, the hydrogen gas cooled by heat exchange with the brine is discharged from the hydrogen gas passage grooves in the one groove forming area A3 of each hydrogen gas plate 43a to the through holes Hob31, Hob21,... And connected to the through holes Hob41. The supply target X1 is supplied from the connected fitting via the hydrogen gas pipe 4c1. Thereby, the hydrogen gas whose temperature has been sufficiently lowered in the hydrogen gas cooling heat exchanger 30A is filled in the fuel tank (gas tank) of the supply target X1. As a result, the charging efficiency of hydrogen gas into the air supply target X1 can be sufficiently improved. The brine whose temperature has increased due to heat exchange with the hydrogen gas is discharged from the brine passage grooves of each of the brine plates 42a to the through holes Hoa21, Hoa31,..., And is connected to the brine pipe 13d from the connector connected to the through hole Hoa41. And collected in the brine tank 12.

  When supplying hydrogen gas to the supply target X2 in this state (a state in which hydrogen gas is supplied to the supply target X1), the hydrogen gas pipe 4a is supplied from the brine tank 12 according to the control of the controller. The control valve 3a supplies the hydrogen gas supplied via the hydrogen gas cooling heat exchanger 30A via the hydrogen gas pipe 4b2.

  Further, the control unit 15 controls the liquid feed pump 14b and the flow rate adjustment valve 16 to increase the amount of brine supplied to the brine pipe 13c connected to the through hole Hia42 in the heat exchanger 30A for cooling hydrogen gas. . At this time, an amount of brine necessary for cooling the hydrogen gas is supplied from the brine tank 12 to the hydrogen gas cooling heat exchanger 30A via the brine pipe 13c, and hydrogen is supplied from the connector connected to the through hole Hia42. The heat is introduced into the gas cooling heat exchanger 30A. Further, the brine introduced into the hydrogen gas cooling heat exchanger 30A is connected to the other groove forming area A2 (in this example, the left groove forming area in FIG. 6 in each of the brine plates 42a) through the through holes Hia22, Hia32,. It moves into the brine passage groove in the area A2).

  On the other hand, as described above, the hydrogen gas supplied from the control valve 3a to the hydrogen gas cooling heat exchanger 30A via the hydrogen gas pipe 4b2 is supplied from the connector connected to the through hole Hib42 through the hydrogen gas cooling heat exchanger. It is introduced into the exchanger 30A. Further, the hydrogen gas introduced into the hydrogen gas cooling heat exchanger 30A passes through the through holes Hib22, Hib32,... And the other groove forming area A3 of each hydrogen gas plate 43a (in this example, the left groove forming area A3 in FIG. 6). It moves into the hydrogen gas passage groove in the groove forming area A3). Thereby, the brine moving in the brine passage groove in the other groove forming area A2 in each brine plate 42a and the hydrogen gas passage groove in the other groove forming area A3 in each hydrogen gas plate 43a are moved. The hydrogen gas is cooled by heat exchange with the moving hydrogen gas.

  The hydrogen gas cooled by the heat exchange with the brine is discharged from the hydrogen gas passage grooves in the other groove forming area A3 of each hydrogen gas plate 43a to the through holes Hob32, Hob22,... And connected to the through holes Hob42. The supply target X2 is supplied from the connected fitting via the hydrogen gas pipe 4c2. Thereby, the hydrogen gas whose temperature has been sufficiently lowered in the hydrogen gas cooling heat exchanger 30A is filled in the fuel tank (gas tank) of the supply target X2. As a result, the supply of the hydrogen gas to the supply target X2 is performed at a sufficiently high filling efficiency without stopping the supply (filling) of the hydrogen gas to the supply target X1.

  In this case, when the hydrogen gas is supplied (filled) in parallel to the supply objects X1 and X2 as described above, the hydrogen gas is cooled in the same manner as in the hydrogen gas cooling heat exchanger 30 described above. Thus, the temperature in the vicinity of one groove forming area A3 of each hydrogen gas plate 43a is different from the temperature in the vicinity of the other groove forming area A3 of each hydrogen gas plate 43a. As a result, the temperature in the vicinity of one groove forming region A2 of each brine plate 42a is different from the temperature in the vicinity of the other groove forming region A2 of each brine plate 42a.

  However, in the hydrogen gas cooling heat exchanger 30A of the present example, the heat insulating portion forming region A4 is provided between the two groove forming regions A3 and A3 of each hydrogen gas plate 43a, and the slit S3 is formed. A slit S2 is formed in the heat insulating portion forming area A4 between the two groove forming areas A2 and A2 of each brine plate 42a joined to the heat insulating section forming area A4 of each hydrogen gas plate 43a in the stacking direction. Is formed between the two groove forming regions A3 and A3 of each hydrogen gas plate 43a and between the two groove forming regions A2 and A2 of each brine plate 42a. Rs is located.

  Therefore, in the hydrogen gas cooling heat exchanger 30A of this example, the hydrogen gas passing through the hydrogen gas passage groove in one groove forming area A3 in each hydrogen gas plate 43a and the other hydrogen gas in each hydrogen gas plate 43a Not only is the hydrogen gas passing through the hydrogen gas passage groove in the groove formation region A3 insulated by the vacuum heat insulating chamber Rs, but also the brine passage groove in one groove formation region A2 in each brine plate 42a. And the brine passing through the brine passage groove in the other groove forming area A2 of each brine plate 42a are insulated by the vacuum insulation chamber Rs.

  As a result, in the hydrogen gas cooling heat exchanger 30A of the present example, the hydrogen gas passing through the hydrogen gas passage groove in one groove forming area A3 in each hydrogen gas plate 43a and the other hydrogen gas in each brine plate 42a And the brine passing through the brine passage groove in the groove formation region A2 are insulated by the vacuum insulation chamber Rs, and pass through the hydrogen gas passage groove in the other groove formation region A3 in each hydrogen gas plate 43a. The hydrogen gas flowing and the brine passing through the brine passage groove in one groove forming area A2 of each brine plate 42a are insulated by the vacuum insulation chamber Rs.

  Thereby, in the hydrogen gas supply system 100 (the hydrogen gas cooling device 1) of the present embodiment including the hydrogen gas cooling heat exchanger 30A, they are sufficiently separated from each other so as not to be thermally affected from each other. The hydrogen gas supplied to the supply target X1 and the hydrogen gas supplied to the supply target X2 are separately cooled by the two heat exchangers arranged in the same manner. The hydrogen gas can be suitably cooled independently and independently.

  Thereafter, for example, when the supply of the hydrogen gas to the supply target X1 is completed, the controller outputs a supply end signal to the control unit 15 of the hydrogen gas cooling device 1. Along with this, the controller 15 controls the liquid feed pump 14b and the flow rate regulating valve 16 to reduce the amount of brine supplied to the brine pipe 13c connected to the through hole Hia41 in the hydrogen gas cooling heat exchanger 30A. .

  Further, when the supply of the hydrogen gas to the supply target X2 following the supply target X1 is also completed, the control unit 15 controls the liquid supply pump 14b and the flow rate adjustment valve 16b in response to the supply completion signal from the controller. To reduce the amount of brine supplied to the brine pipe 13c connected to the through hole Hia42 in the heat exchanger 30A for cooling hydrogen gas, to start the above-described brine circulation processing, and to reduce the amount of brine in the brine tank 12. Is maintained within the specified temperature range.

  As described above, in the hydrogen gas cooling heat exchanger 30A, the N2 (independently provided) brine plates 42a having the groove forming regions A2 in which the brine passage grooves through which the brine can pass are formed. In this example, N2 = 2) groove-forming regions A2, and heat exchange with hydrogen gas is performed without mixing the brines passing through the brine passage grooves in each groove-forming region A2. Between the adjacent groove forming areas A2 and A2, a slit that insulates the brine passing through the brine passing groove in the one groove forming area A2 and the brine passing through the brine passing groove in the other groove forming area A2. A heat insulating portion forming area A4 in which S2 (vacuum heat insulating chamber Rs) is formed is provided.

  Therefore, according to the heat exchanger 30A for cooling hydrogen gas, the heat insulating portion provided between the groove forming regions A2 and A2 despite the N2 = 2 groove forming regions A2 and A2 being sufficiently close to each other. The formation region A4 (vacuum insulation chamber Rs) suitably insulates the brine passing through the brine passage groove in one groove formation region A2 and the brine passing through the brine passage groove in the other groove formation region A2. Therefore, the brine passing through the brine passage groove in any one of the groove formation regions A2 is replaced by the brine passing through the brine passage groove in any of the other groove formation regions A2. It can be reliably avoided that the temperature rises due to the effect of the above and a state in which it is difficult to preferably cool the hydrogen gas is difficult.

  Further, in the hydrogen gas cooling heat exchanger 30A, the hydrogen gas plate 43a includes N (in this example, N = 2) groove forming areas A3 as “N1 first groove forming areas”. And the brine plate 42a includes N (in this example, N = 2) groove forming areas A2 as “N2 second groove forming areas”, and M = 1st groove forming area A3 And the M = first groove forming area A2 overlap in the stacking direction of each plate, and the M = second groove forming area A3 and the M = second groove forming area A2 correspond to each plate. The brine plate 42a and the hydrogen gas plate 43a are stacked so as to overlap in the stacking direction.

  Therefore, according to the hydrogen gas cooling heat exchanger 30A, the hydrogen gas passing through the hydrogen gas passage groove in any one of the groove forming regions A3 is moved in the stacking direction with respect to the groove forming region A3. When cooling is performed by the brine passing through the brine passage groove in the overlapping groove formation region A2, due to the heat of the brine passing through the brine passage groove in the other groove formation region A2. A situation in which cooling of the hydrogen gas is hindered can be suitably avoided.

  Next, still another embodiment of the “plate heat exchanger” will be described with reference to the accompanying drawings.

  Components having the same functions as the components of the above-described hydrogen gas cooling heat exchangers 30 and 30A are denoted by the same reference numerals, and redundant description will be omitted. Also, for the components other than the hydrogen gas cooling heat exchanger 30A in the hydrogen gas supply system 100 (hydrogen gas cooling device 1), the hydrogen gas supply system 100 including the hydrogen gas cooling heat exchanger 30A is used. Therefore, a duplicate description will be omitted.

  The hydrogen gas cooling heat exchanger 30B shown in FIGS. 1, 8 to 10 is still another example of the “plate type heat exchanger”, and as shown in FIG. 1, the hydrogen gas cooling heat exchanger described above. Similarly to 30A, it is connected to the control valve 3a of the dispenser 3 via the hydrogen gas pipes 4b1 and 4b2, connected to the supply target X1 via the hydrogen gas pipe 4c1, and via the hydrogen gas pipe 4c2. It is connected to the air supply target X2. The hydrogen gas cooling heat exchanger 30 </ b> B is connected to the brine tank 12 via brine pipes 13 c and 13 d shown by solid lines, brine pipes 13 c and 13 d shown by broken lines, and a flow control valve 16.

  As shown in FIGS. 8 to 10, the hydrogen gas cooling heat exchanger 30 </ b> B includes base plates 41 b and 44 b, a brine plate 42 b that is another example of the “second plate”, and a “first plate”. A hydrogen gas plate 43b, which is another example of the “body”, and heat insulating plates 45 and 46 are provided.

  Specifically, in the hydrogen gas cooling heat exchanger 30B, the brine plate 42b and the hydrogen gas plate 43b are alternately stacked (an example of a “predetermined stacking order”). The stacked body 40a (“L = 2 A laminate 40b (“L = 2 laminates”) is disposed between the base plate 41b and the heat insulating plate 45, and the brine plates 42b and the hydrogen gas plates 43b are alternately laminated. "The other example) is disposed between the heat insulating plate 46 and the base plate 44b, and the respective joining surfaces are joined together to form an integrated body portion 31b. The main body portion 31b is connected to the brine pipes 13c, 13d and hydrogen gas. A plurality of connecting tools (not shown) mounted on the base plates 41b and 44b so that the pipes 4b1, 4b2, 4c1 and 4c2 can be connected. It is.

  In this case, in the hydrogen gas cooling heat exchanger 30B of this example, the base plates 41b and 44b, the brine plate 42b, the hydrogen gas plate 43b, and the heat insulating plates 45 and 46 respectively correspond to “plates”, as shown in FIG. As an example, each of them is formed in a rectangular shape in a plan view by a metal plate such as stainless steel. In the following description, the base plate 41b, the brine plate 42b, the hydrogen gas plate 43b, the heat insulating plates 45 and 46, and the base plate 44b are also collectively referred to as "plates 41b to 44b, 45 and 46".

  As shown in FIGS. 9 and 10, the brine plate 42b defines a groove forming area A2 (still another example of the "second groove forming area") in which a brine passage groove through which brine can pass is formed. At the same time, a bonding region A1 is defined around the groove forming region A2. Note that FIG. 9 is a schematic view of a cross section taken along line BB-BB in FIG. 8, and in order to facilitate understanding of the internal structure of the heat exchanger 30B for cooling hydrogen gas, each of the plate members 41b to 44b, 45 and 46 are shown thicker than the actual thickness. FIGS. 9 and 10 show a state in which one large groove (recess) is formed in the groove forming area A2 in order to facilitate understanding of the configuration of the brine plate 42b. Has a plurality of narrow brine passage grooves formed side by side in the groove formation region A2.

  Further, in the brine plate 42b, a through hole Hia2 communicated with each brine passage groove so that the brine can be introduced into each brine passage groove in the groove formation region A2, and each brine passage hole in the groove formation region A2. A through hole Hoa2 is formed to communicate with each brine passage groove so that the brine can be discharged from the groove. Further, through holes Hib2 and Hob2 are formed in the brine plate 42b so as to communicate with through holes Hib3 and Hob3 formed in the hydrogen gas plate 43b as described later.

  In this case, in the hydrogen gas cooling heat exchanger 30B of the present embodiment, the brine flow path from the through hole Hia2 to the through hole Hoa2 of each of the brine plates 42b constituting the laminate 40a, and the brine plates constituting the laminate 40b The brine passage from the through-hole Hia2 to the through-hole Hoa2 of 42b is separated and independent from each other by the heat insulating plates 45 and 46, and is used for passing each brine in the groove forming area A2 in each brine plate 42b of the laminated body 40a. Without being mixed in the hydrogen gas cooling heat exchanger 30B, the brine passed through the groove and the brine passed through each of the brine passage grooves in the groove formation area A2 in each of the brine plates 42b of the stacked body 40b. Heat exchange with hydrogen gas is possible.

  Further, in the hydrogen gas cooling heat exchanger 30B of the present example, as an example, the plates (the groove forming region A2 and the groove forming region A2) having the same configuration as the brine plate 42b configuring the laminate 40a and the brine plate 42b configuring the laminate 40b are used. A plate in which the joining area A1 is similarly formed) is employed.

  In the hydrogen gas plate 43b, a groove forming region A3 (still another example of the “first groove forming region”) in which a hydrogen gas passage groove through which hydrogen gas can pass is defined, and a groove is formed. A junction area A1 is defined around the area A3. 9 and 10 show a state in which one large groove (recess) is formed in the groove forming region A3 in order to facilitate understanding of the configuration of the hydrogen gas plate 43b. Has a plurality of narrow hydrogen gas passage grooves formed side by side in the groove forming region A3. Further, in the hydrogen gas plate 43b, the through holes Hia3 and Hoa3 communicated with the through holes Hia2 and Hoa2 formed in the brine plate 42b as described above. Further, through holes Hib3 and Hob3 are formed in the hydrogen gas plate 43b.

  In this case, in the hydrogen gas cooling heat exchanger 30B of the present example, the hydrogen gas flow path from the through hole Hia3 to the through hole Hoa3 of each hydrogen gas plate 43b constituting the stacked body 40a, and each of the hydrogen gas channels constituting the stacked body 40b The hydrogen gas flow path from the through hole Hia3 to the through hole Hoa3 of the hydrogen gas plate 43b is separated and independent from each other by the heat insulating plates 45 and 46, and is formed in the groove forming area A3 in each hydrogen gas plate 43b of the stacked body 40a. The hydrogen gas passed through each hydrogen gas passage groove and the hydrogen gas passed through each hydrogen gas passage groove in the groove forming area A3 in each hydrogen gas plate 43b of the stacked body 40b are heated by the hydrogen gas cooling heat. The heat can be exchanged with the brine without being mixed in the exchanger 30B.

  Further, in the hydrogen gas cooling heat exchanger 30B of the present example, as an example, a plate (groove forming region) having the same configuration as the hydrogen gas plate 43b constituting the laminate 40a and the hydrogen gas plate 43b constituting the laminate 40b is provided. A3 and a plate on which the bonding area A1 is similarly formed.

  As described above, the heat insulating plates 45 and 46 are disposed between the laminates 40a and 40b (an example of “between adjacent laminates”), and pass through the respective brine plates 42b constituting the laminate 40a. To prevent the mixed brine from being mixed with the brine passed through each of the brine plates 42b forming the laminate 40b, and to prevent the hydrogen gas and the laminate 40b from passing through the hydrogen gas plates 43b forming the laminate 40a. And hydrogen gas that is passed through each of the hydrogen gas plates 43b, which serves as a “third plate”, and serves as a “third plate”, and brine and hydrogen gas that are passed through the stacked body 40a. It insulates the brine and hydrogen gas that are passed through the laminate 40b.

  Specifically, as shown in FIGS. 9 and 10, the heat insulating plate 45 has a recess 45 a formed in the heat insulating portion forming area A <b> 4, and a through hole Hc <b> 5 communicating from the end face thereof to the recess 45 a. I have. As will be described later, the upper surface opening of the concave portion 45a is closed by the heat insulating plate 46, a valve (not shown) is attached to the through hole Hc5, and the air in the concave portion 45a is evacuated by vacuum. In this state, the valve is shifted to the closed state, so that the inside of the concave portion 45a becomes a vacuum heat insulating chamber Rs as a "heat insulating portion".

  In this case, in the heat exchanger 30B for cooling hydrogen gas of this example in which the main body 31b is manufactured by diffusion bonding, the bottom of the concave portion 45a and the heat insulating plate 46 in the heat insulating plate 45 are deformed near the center of the concave portion 45a. Protrusions 45b, 45b having a depth equal to the depth of the recess 45a are provided in the heat insulating portion forming area A4 (in the recess 45a) so that the pressing force on each of the plate bodies 41b to 44b, 45, 46 does not decrease. Have been. Thereby, in the heat exchanger 30B for cooling hydrogen gas of the present example, in addition to the joining region A1 defined around the heat insulating portion forming region A4, the joining region A5 which is the protruding end surface of the convex portion 45b is joined to the heat insulating plate 46. Will be done.

  Through holes Hia41, Hoa41, Hib41, Hob41 are formed in the base plate 41b. In this case, the through-hole Hia41 is communicated with the through-hole Hia2 of the brine plate 42b and the through-hole Hia3 of the hydrogen gas plate 43b that constitute the stacked body 40a, and a connector for connecting one of the brine pipes 13c is attached. Can be Further, the through-hole Hoa41 is communicated with the through-hole Hoa2 of the brine plate 42 and the through-hole Hoa3 of the hydrogen gas plate 43 constituting the stacked body 40a, and a connection tool for connecting one of the brine pipes 13d is attached. .

  The through-hole Hib41 is communicated with the through-hole Hib2 of the brine plate 42b and the through-hole Hib3 of the hydrogen gas plate 43b constituting the stacked body 40a, and has a fitting for connecting the hydrogen gas pipe 4b1. Further, the through-hole Hob41 is communicated with the through-hole Hob2 of the brine plate 42b and the through-hole Hob3 of the hydrogen gas plate 43b constituting the stacked body 40a, and has a fitting for connecting the hydrogen gas pipe 4c1.

  Through holes Hia42, Hoa42, Hib42, Hob42 are formed in the base plate 44b. In this case, the through-hole Hia42 is communicated with the through-hole Hia2 of the brine plate 42b and the through-hole Hia3 of the hydrogen gas plate 43b constituting the stacked body 40b, and a connector for connecting the other brine pipe 13c is attached. Can be Further, the through-hole Hoa42 is communicated with the through-hole Hoa2 of the brine plate 42 and the through-hole Hoa3 of the hydrogen gas plate 43 constituting the stacked body 40b, and a connecting tool for connecting the other brine pipe 13d is attached. .

  Further, the through-hole Hib42 is communicated with the through-hole Hib2 of the brine plate 42b and the through-hole Hib3 of the hydrogen gas plate 43b constituting the stacked body 40b, and a connector for connecting the hydrogen gas pipe 4b2 is attached. Further, the through-hole Hob42 is communicated with the through-hole Hob2 of the brine plate 42b and the through-hole Hob3 of the hydrogen gas plate 43b constituting the stacked body 40b, and a connector for connecting the hydrogen gas pipe 4c2 is attached.

  In this case, in the hydrogen gas cooling heat exchanger 30B of the present example, the plates 41b and 44b have the same configuration (a heat insulating portion forming area A4 (including the joining area A5) and a plate in which the joining area A1 is similarly formed). ) Has been adopted.

  Next, an example of a method of manufacturing the above-described heat exchanger 30B for cooling hydrogen gas will be described with reference to the accompanying drawings.

  When manufacturing the heat exchanger 30B for cooling hydrogen gas, first, a lamination process for laminating the plate bodies 41b to 44b, 45, and 46 in a "predetermined lamination order" is performed. Specifically, as an example, first, after the base plate 41b is placed on a stacking jig (positioning tool) (not shown), the brine plate 42b is placed on the base plate 41b with the formation surface of the brine passage groove facing upward. And a hydrogen gas plate 43b is stacked on the brine plate 42b with the surface for forming the hydrogen gas passage grooves facing upward. As a result, a set of a laminate including the brine plate 42b and the hydrogen gas plate 43b constituting the laminate 40a is in a state of being laminated on the base plate 41b.

  Next, the brine plates 42b and the hydrogen gas plates 43b are alternately stacked on the hydrogen gas plates 43b in the above-mentioned laminate according to the capacity required for the hydrogen gas cooling heat exchanger 30B. Subsequently, after the brine plate 42b is laminated on the uppermost hydrogen gas plate 43b with the formation surface of the brine passage groove facing upward, the heat insulating plate is placed on the brine plate 42b with the formation surface of the concave portion 45a facing upward. 45 are stacked. As a result, a plurality of brine plates 42b and a plurality of hydrogen gas plates 43b constituting the stacked body 40a are stacked between the base plate 41b and the heat insulating plate 45.

  Next, after the heat insulating plate 46 is stacked on the heat insulating plate 45 so as to close the concave portion 45a of the heat insulating plate 45, the brine plate 42b is stacked on the heat insulating plate 46 with the formation surface of the brine passage groove facing upward. At the same time, the hydrogen gas plate 43b is stacked on the brine plate 42b with the formation surface of the hydrogen gas passage groove facing upward. As a result, a set of laminates including the brine plate 42b and the hydrogen gas plate 43b constituting the laminate 40b is in a state of being laminated on the heat insulating plate 46.

  Subsequently, the brine plates 42b and the hydrogen gas plates 43b are alternately stacked on the hydrogen gas plates 43b in the above-described laminate according to the capacity required for the hydrogen gas cooling heat exchanger 30B. Next, the base plate 44b is stacked on the uppermost hydrogen gas plate 43b. Thus, the lamination process is completed.

  In a state where the lamination process is completed, as shown in FIG. 9, each bonding region A1 of the brine plate 42b constituting the laminate 40a and each bonding region A1 of the hydrogen gas plate 43b constituting the laminate 40a The respective bodies 41b to 44b, 45, and 46 overlap in the laminating direction, and each of the groove forming areas A2 of the brine plate 42b constituting the laminated body 40a and each of the groove forming areas A3 of the hydrogen gas plate 43b constituting the laminated body 40a are respectively formed. The plate members 41b to 44b, 45, and 46 are superposed in the stacking direction.

  Also, the through hole Hia2 of the brine plate 42b, the through hole Hia3 of the hydrogen gas plate 43b, and the through hole Hia41 of the base plate 41b, which constitute the stacked body 40a, communicate with each other in the stacking direction of the plate bodies 41b to 44b, 45, and 46. At the same time, the through-hole Hoa2 of the brine plate 42b, the through-hole Hoa3 of the hydrogen gas plate 43b, and the through-hole Hoa41 of the base plate 41b composing the laminated body 40a communicate in the laminating direction of the respective plates 41b to 44b, 45, and 46. It will be in a state of having done.

  Further, each joining region A1 of the brine plate 42b constituting the laminate 40b and each joining region A1 of the hydrogen gas plate 43b constituting the laminate 40b overlap in the laminating direction of the plates 41b to 44b, 45, and 46. Each groove forming area A2 of the brine plate 42b forming the stacked body 40b and each groove forming area A3 of the hydrogen gas plate 43b forming the stacked body 40b overlap in the stacking direction of the plate bodies 41b to 44b, 45, and 46. State.

  Also, the through-hole Hia2 of the brine plate 42b, the through-hole Hia3 of the hydrogen gas plate 43b, and the through-hole Hia42 of the base plate 44b that constitute the stacked body 40b communicate with each other in the stacking direction of the plate bodies 41b to 44b, 45, and 46. At the same time, the through-hole Hoa2 of the brine plate 42b, the through-hole Hoa3 of the hydrogen gas plate 43b, and the through-hole Hoa42 of the base plate 44b composing the laminated body 40b communicate in the laminating direction of the respective plate bodies 41b to 44b, 45, and 46. It will be in a state of having done.

  Further, the groove forming area A2 of the brine plate 42b and the groove forming area A3 of the hydrogen gas plate 43b constituting the laminate 40a, and the groove forming area A2 of the brine plate 42b and the groove forming of the hydrogen gas plate 43b constituting the laminate 40b. A vacuum heat insulation chamber Rs composed of heat insulation plates 45 and 46 exists between the area A3.

  Thereafter, the stacked body of the respective plate bodies 41b to 44b, 45, and 46 stacked by the above-described stacking process is housed in a bonding processing device (not shown) to perform a bonding process (diffusion bonding process). Note that the joining process is the same as that at the time of manufacturing the heat exchanger 30 for cooling hydrogen gas and the like, and a detailed description thereof will be omitted. Thereafter, by connecting a not-shown connector to each of the through-holes Hia41, Hoa41, Hib41, Hob41 of the base plate 41b and each of the through-holes Hia42, Hoa42, Hib42, Hob42 of the base plate 44b, the heat exchanger 30B for hydrogen gas cooling can be provided. Manufacturing is completed.

  Next, the operation of the hydrogen gas cooling device 1 when the hydrogen gas supply system 100 supplies hydrogen gas to the supply targets X1 and X2 (hydrogen gas cooling process in the hydrogen gas cooling heat exchanger 30B) will be described. This will be described with reference to the accompanying drawings. The pre-cooling process of the heat exchanger for hydrogen gas cooling 30B is the same as the pre-cooling process of the heat exchanger for hydrogen gas cooling 30A described above, and a detailed description thereof will be omitted.

  On the other hand, regarding the cooling process of the hydrogen gas supplied to the supply targets X1 and X2, the hydrogen gas cooling heat exchanger 30A described above uses the hydrogen gas supplied to the supply target X1 in FIG. A configuration is adopted in which cooling is performed at the right portion and hydrogen gas supplied to the supply target X2 is cooled at the left portion in FIG. On the other hand, in the hydrogen gas cooling heat exchanger 30B of the present example, the hydrogen gas supplied to the supply target X1 is cooled in the lower portion in FIGS. 8 and 9 (that is, in the stacked body 40a). The configuration in which the hydrogen gas supplied to the supply target X2 is cooled in the upper portion (that is, in the stacked body 40b) in both figures is different from the hydrogen gas cooling heat exchanger 30A. However, in the hydrogen gas cooling heat exchanger 30B of the present embodiment, similarly to the hydrogen gas cooling heat exchanger 30A, the hydrogen gas to be supplied to the air supply targets X1 and X2 is suitably cooled. It is possible to do. Accordingly, even in the hydrogen gas supply system 100 including the hydrogen gas cooling heat exchanger 30B, the supply of the hydrogen gas to the supply target X1 is stopped without stopping the supply of the hydrogen gas to the supply target X1. Also, hydrogen gas can be charged with sufficiently high charging efficiency.

  In this case, when hydrogen gas is supplied (filled) in parallel to the air supply targets X1 and X2, the temperature near the groove forming area A3 of each hydrogen gas plate 43b constituting the laminate 40a and the laminate The temperature in the vicinity of the groove forming region A3 of each of the hydrogen gas plates 43b constituting the 40b is different. As a result, the temperature in the vicinity of the groove forming region A2 of each brine plate 42b in the stacked body 40a is different from the temperature in the vicinity of the groove forming region A2 of each brine plate 42b in the stacked body 40b.

  However, in the hydrogen gas cooling heat exchanger 30B of this example, the groove forming area A3 of each hydrogen gas plate 43b and the groove forming area A2 of the brine plate 42 of the stacked body 40a, and the hydrogen gas plate 43b of the stacked body 40b are formed. A state in which a heat insulating portion forming area A4 of the heat insulating plate 45 is provided between the groove forming area A3 and the groove forming area A2 of the brine plate 42, and the vacuum heat insulating chamber Rs including the concave portion 45a is located between the stacked bodies 40a and 40b. Has become.

  Therefore, in the hydrogen gas cooling heat exchanger 30B of the present embodiment, the hydrogen gas passing through the hydrogen gas passage groove in the groove forming area A3 in each hydrogen gas plate 43b constituting the stacked body 40a and the stacked body 40b The hydrogen gas passing through the hydrogen gas passage groove in the groove forming region A3 in each hydrogen gas plate 43b of the respective hydrogen gas plates 43b is insulated by the vacuum heat insulating chamber Rs, and the hydrogen gas in each of the brine plates 42b of the stacked body 40a. The brine passing through the brine passage groove in the groove formation region A2 and the brine passing through the brine passage groove in the groove formation region A2 in each of the brine plates 42b constituting the stacked body 40b are vacuum insulated chambers. It is in a state insulated by Rs.

  As a result, in the hydrogen gas cooling heat exchanger 30B of the present example, the hydrogen gas passing through the hydrogen gas passage groove in the groove forming area A3 in each hydrogen gas plate 43b of the laminate 40a and the hydrogen gas passing through the laminate 40b The brine passing through the brine passage groove in the groove forming area A2 in each brine plate 42b is insulated by the vacuum heat insulation chamber Rs, and the hydrogen in the groove forming area A3 in each hydrogen gas plate 43b of the stacked body 40b. A state in which the hydrogen gas passing through the gas passage groove and the brine passing through the brine passage groove in the groove forming area A2 in each of the brine plates 42b of the stacked body 40a are insulated by the vacuum insulation chamber Rs. Has become.

  Thus, in the hydrogen gas supply system 100 (hydrogen gas cooling device 1) of the present embodiment including the hydrogen gas cooling heat exchanger 30B, the hydrogen gas cooling system 30 includes the hydrogen gas cooling heat exchanger 30A. Hydrogen gas to be supplied to the supply target X1 by two heat exchangers arranged sufficiently apart from each other so as not to be thermally affected by each other in the same manner as the hydrogen gas supply system 100 of In a manner similar to that in which the hydrogen gas supplied to the supply target X2 is separately cooled, it is possible to suitably cool both hydrogen gases separately and independently.

  As described above, in the hydrogen gas cooling heat exchanger 30B, the hydrogen gas plate 43b in which the hydrogen gas passage groove through which the hydrogen gas can pass, and the brine passage groove through which the brine can pass are formed. Each of the stacked bodies 40a, 40b on which the brine plates 42b are stacked is provided (L = 2), and the hydrogen gas passing through the hydrogen gas passage groove of the hydrogen gas plate 43b in each of the stacked bodies 40a, 40b is mixed. And a hydrogen gas passing between the adjacent stacked bodies 40a and 40b through the hydrogen gas passage groove of the hydrogen gas plate 43b in the stacked body 40a and a hydrogen gas in the stacked body 40b. The heat insulating plates 45 and 46 constituting the vacuum heat insulating chamber Rs that insulates the hydrogen gas passing through the hydrogen gas passage groove of the plate 43b are sandwiched. It has been written.

  Therefore, according to the hydrogen gas cooling heat exchanger 30B, the heat insulating plate 45 disposed between the stacked bodies 40a, 40b despite the L = two stacked bodies 40a, 40b being sufficiently close to each other. , 46 (vacuum insulation chamber Rs), the hydrogen gas passing through the hydrogen gas passage groove in the groove forming region A3 in the laminate 40a and the hydrogen gas passing through the hydrogen gas passage groove in the groove formation region A3 in the laminate 40b. L = 2 types of hydrogen gas can be suitably cooled in parallel, and L = 2 separate and independent “plate heat exchangers” can be provided. As compared with a configuration in which L = two types of hydrogen gas are cooled by using the “plate-type heat exchanger”, the space occupied by the “plate heat exchanger” required for cooling each hydrogen gas can be sufficiently reduced.

  Further, according to the hydrogen gas cooling heat exchanger 30B, heat can be exchanged with hydrogen gas without mixing the brine passing through the brine passage grooves of the brine plate 42b in each of the stacked bodies 40a and 40b. Thus, despite the fact that the two L = two stacked bodies 40a and 40b are sufficiently close to each other, the stacked bodies are provided by the heat insulating plates 45 and 46 (vacuum heat insulating chamber Rs) provided between the stacked bodies 40a and 40b. Since the brine passing through the brine passage groove in the groove formation region A2 in the groove formation region A2 at 40a and the brine passing through the brine passage groove in the groove formation region A2 in the laminate 40b can be suitably insulated, the laminate The brine passing through the brine passage groove in any one of the groove forming regions A2 of the stacks 40a and 40b is formed in any one of the other groove shapes of the laminates 40a and 40b. It is possible to reliably avoid a difficult state to suitably cool the hydrogen gas temperature rise under the influence of brine passing through the brine passage for the groove in the region A2.

  Further, in the hydrogen gas cooling heat exchanger 30B, the respective stacked bodies 40a and 40b are respectively formed by stacking respective plates including a plurality of hydrogen gas plates 43b and a plurality of brine plates 42b. Therefore, according to the hydrogen gas cooling heat exchanger 30B, for example, two types of hydrogen gas (the hydrogen gas supplied to the supply target X1 via the hydrogen gas pipes 4b1 and 4c1 and the hydrogen gas pipe 4b2) One "hydrogen gas plate" for cooling one hydrogen gas when configuring a "plate heat exchanger" so as to be able to cool the hydrogen gas supplied to the air supply target X2 via 4c2) And a laminate of one "brine plate" and a laminate of one "hydrogen gas plate" and one "brine plate" for cooling the other hydrogen gas are alternately laminated. Is a large number of “insulated plates” sandwiched between each laminate due to the large number of laminates that make up the “plate heat exchanger”. Although the thickness increases Since the number of the hydrogen gas plates 43b and the brine plates 42b constituting the laminate 40a and the number of the hydrogen gas plates 43b and the brine plates 42b constituting the laminate 40b are large, the heat exchanger 30B for cooling the hydrogen gas can be used. The number of “laminates (laminates 40a, 40b)” to be configured can be reduced to a small number (two in this example), and a heat insulating plate 45 sandwiched between the respective “laminates (laminates 40a, 40b)”. , 46 can be reduced to a small number (one set in this example), so that the thickness of the hydrogen gas cooling heat exchanger 30B can be made sufficiently small.

  The “plate-type heat exchanger” is not limited to the example of the configuration of the hydrogen gas cooling heat exchangers 30, 30A, and 30B.

  For example, the heat exchangers 30, 30A, 30B for hydrogen gas cooling are configured such that a connector for connection with the brine pipes 13c, 13d is attached to through holes (reference numerals omitted) formed in the base plates 44, 44a, 41b, 44b. As described above, as in the case of the heat exchanger 30C for cooling hydrogen gas shown in FIGS. 11 and 12, a connector for connecting to the brine pipes 13c and 13d is provided on a side surface of the main body 31c. It is also possible to adopt a configuration of attaching to 32 Hia32 and Hoa32.

  In this case, the hydrogen gas cooling heat exchanger 30C is still another example of the “plate type heat exchanger”, and is replaced with the brine plate 42 and the hydrogen gas plate 43 in the hydrogen gas cooling heat exchanger 30 described above. Between the base plates 41 and 44c, a brine plate 42c as still another example of the “second plate” and a hydrogen gas plate 43c as still another example of the “first plate” are alternately arranged. The main body 31c is formed by laminating (still another example of the "predetermined lamination order"), joining the joining surfaces together and integrating them.

  Note that, with respect to the hydrogen gas cooling heat exchanger 30C, components having the same functions as those of the hydrogen gas cooling heat exchanger 30 are denoted by the same reference numerals, and redundant description will be omitted. In this case, in the hydrogen gas cooling heat exchanger 30C, the base plate 41, the brine plate 42c, the hydrogen gas plate 43c, and the base plate 44c each correspond to a “plate”. As shown in FIG. Are formed in a rectangular shape in plan view. In the following description, the base plate 41, the brine plate 42c, the hydrogen gas plate 43c, and the base plate 44c are also collectively referred to as "plates 41, 42c to 44c".

  In the brine plate 42c, a pair of groove forming areas A2, A2 (a “second groove”) in which brine passage grooves (still another example of the “second fluid passage groove”) through which the brine can pass are formed. Still another example of the "forming region") is defined, and the heat insulating portion forming region A4 in which the slit S2 communicated with the slit S3 of the hydrogen gas plate 43c is defined between the two groove forming regions A2 and A2. ing. Further, between the groove forming region A2 and the heat insulating portion forming region A4, and outside the groove forming region A2, a bonding region A1 for bonding to the base plates 41 and 44c and the hydrogen gas plate 43c is defined.

  FIG. 12 illustrates a state in which one large groove (recess) is formed in the groove forming region A2 in order to facilitate understanding of the configuration of the brine plate 42c. A plurality of narrow brine passage grooves are formed side by side in the groove forming area A2. In this case, in the hydrogen gas cooling heat exchanger 30C, a plurality of narrow-width brine passage grooves extend from one of the two sides (the left side and the right side in FIG. 12) of the brine plate 42c to the other, and form a groove forming area A2. And each brine passage groove is open on both side surfaces of the brine plate 42c. The brine plate 42 has through holes Hib21, Hob21, Hib22, and Hob22 that are communicated with through holes Hib31, Hob31, Hib32, and Hob32 formed in the hydrogen gas plate 43c as described later.

  The hydrogen gas plate 43c has the same configuration as the hydrogen gas plate 43 except that the through holes Hia3 and Hoa3 of the hydrogen gas plate 43 in the hydrogen gas cooling heat exchanger 30 are not formed. The base plate 44c is configured similarly to the hydrogen gas plate 43 except that the through holes Hia4 and Hoa4 of the base plate 44 in the heat exchanger 30 for cooling hydrogen gas are not formed.

  As an example, the brine header 32 is formed in a flat plate shape from a metal plate (a plate material such as stainless steel) having a length substantially equal to the thickness of the main body 31c along the stacking direction of the plate bodies 41, 42c to 44c. I have. A concave portion 32a is formed on the surface of the brine header 32 that is joined to the main body portion 31c such that the bottom surface faces the opening of each of the brine passage grooves in the main body portion 31c. A through-hole Hia32 communicating with the recess 32a is formed in one of the brine headers 32, 32, and a through-hole Hoa32 communicating with the recess 32a is formed in the other of the brine headers 32, 32.

  The through hole Hia32 is a hole for connecting the brine pipe 13c (that is, a hole for introducing brine into the recess 32a), and the through hole Hoa32 is a hole for connecting the brine pipe 13d (that is, a hole from the recess 32a). Holes for discharging the brine), the diameters and the formation positions of the two through holes Hia32 and Hoa32 coincide with each other. That is, in the hydrogen gas cooling heat exchanger 30C of the present embodiment, metal plates having the same configuration are employed as the two brine headers 32,32.

  When manufacturing the heat exchanger 30C for cooling hydrogen gas, the main body 31c is manufactured in the same procedure as when manufacturing the main body 31 in the heat exchanger 30 for cooling hydrogen gas. Next, the brine headers 32, 32 are joined to the opposite side surfaces of the main body 31c, respectively, with the formation surface of the concave portion 32a facing inward. Thereby, the through hole Hia32 and the concave portion 32a in one brine header 32, the brine passage groove of each brine plate 42c in the main body portion 31c, and the concave portion 32a and the through hole Hoa32 in the other brine header 32 communicate with each other. As shown in FIG. 11, the heat exchanger 30C for cooling hydrogen gas is completed.

  In the hydrogen gas supply system 100 including the hydrogen gas cooling heat exchanger 30C, the brine was introduced from the through-hole Hia4 in the hydrogen gas cooling heat exchanger 30, and the brine was discharged from the through-hole Hoa4. Instead of the operation, the hydrogen gas cooling heat exchanger 30 was provided except that the brine was introduced from the through hole Hia32 in the hydrogen gas cooling heat exchanger 30C and the brine was discharged from the through hole Hoa32. The hydrogen gas is cooled similarly to the cooling process in the hydrogen gas supply system 100. Therefore, the through holes Hia32 of the brine headers 32, 32 are provided in the same manner as the hydrogen gas supply system 100 including the hydrogen gas cooling heat exchanger 30 in which the brine pipes 13c, 13d are connected to the connectors provided on the base plate 44. , Hoa 32 and the hydrogen gas cooling heat exchanger 30C adopting a configuration in which the brine pipes 13c and 13d are connected can also provide the same effect as the hydrogen gas cooling heat exchanger 30.

  In addition, although illustration and a detailed description are omitted, instead of the “connector attached to the base plate” such as the “connector for connecting the hydrogen gas pipe” in the hydrogen gas cooling heat exchangers 30 to 30C, A configuration is adopted in which a “hydrogen gas header to which a hydrogen gas pipe can be connected” is attached to the side of the “main body” like the brine headers 32, 32 in the heat exchanger 30C for cooling hydrogen gas to introduce / discharge hydrogen gas. You can also.

  In addition, the configuration of the hydrogen gas cooling heat exchangers 30, 30A, and 30C including the hydrogen gas plates 43, 43a, and 43c having N1 = 2 groove forming regions A3 provided separately and independently will be described as an example. As described above, the “plate-type heat exchanger” may be configured by including the “first plate” having N1 = 3 or more “first groove forming regions” (not shown). Furthermore, the configuration of the hydrogen gas cooling heat exchanger 30A including the brine plate 42a having N2 = 2 groove forming areas A2 provided separately and independently is described as an example, but N2 = 3 or more. The "plate heat exchanger" can be configured by including a "second plate" having the "second groove forming region" (not shown). In this case, in a configuration in which the number of N1 “first groove forming regions” and the number of N2 “second groove forming regions” are respectively plural, the number of “first groove forming regions” Alternatively, the number of “second groove forming regions” may be different.

  It should be noted that brine for cooling the hydrogen gas passing through the hydrogen gas passage groove in one groove forming area A3 and cooling the hydrogen gas passing through the hydrogen gas passage groove in the other groove forming area A3. In a “plate-type heat exchanger” such as a hydrogen gas cooling heat exchanger 30 having a brine passage groove through which brine is passed simultaneously in parallel, a single “second groove forming region” is used. The “second plate body” may be formed so as to have (not shown).

  In addition, the configuration of the hydrogen gas cooling heat exchanger 30B including L = 2 laminated bodies 40a and 40b has been described as an example. However, the plate type including L = 3 or more laminated bodies is described. A "heat exchanger" can also be configured (not shown). Even when such a configuration is adopted, by adopting a configuration in which the “third plate” is sandwiched between adjacent “laminations”, the same configuration as the above-described hydrogen gas cooling heat exchanger 30B is adopted. The effect can be achieved.

  Further, the hydrogen gas passing through the hydrogen gas passage groove in one groove formation region A3 is heat-exchanged with the brine passing through the brine passage groove in one groove formation region A2 to cool the hydrogen gas. Although the configuration of the hydrogen gas cooling heat exchangers 30 and 30A to 30C having the configuration described above has been described as an example, for example, regarding the hydrogen gas passing through the hydrogen gas passage groove in any one of the groove formation regions A3, On the upstream side of the hydrogen gas passage groove, the hydrogen gas is pre-cooled by heat exchange with the brine passing through the brine passage groove in one groove forming area A2, and on the downstream side of the hydrogen gas passage groove. A configuration in which the hydrogen gas is completely cooled by heat exchange with the brine passing through the brine passage groove in another groove formation region A2, that is, in the hydrogen gas passage groove in one groove formation region A3 Hydrogen gas passing through Can also be several of brine and are sequentially heat exchanger passing through the brine passage for the groove of the groove forming region A2 to adopt a configuration for cooling the hydrogen gas (not shown).

  In addition, after the completion of the diffusion bonding process, the “valve” attached to the “through hole” is shifted to the open state, the inside of the “vacuum insulation chamber” is evacuated, and then the “valve” is shifted to the closed state. Although the example of configuring the "insulation section" was explained, not only during manufacturing, but also during use (when cooling hydrogen gas), by continuing to evacuate or periodically evacuating In addition, a state in which the degree of vacuum is high, that is, a state in which heat insulation is high, can be maintained for a long time.

  At the time of the above-described diffusion bonding, prior to the start of the processing, the processing chamber accommodating each “plate” to be bonded is evacuated. Therefore, the "base plate" or the like is not provided with "through holes for evacuation", and the respective "plates" are diffusion-bonded in a state where the inside of the "vacuum insulation chamber" (in the slit) is evacuated prior to diffusion bonding. Thereby, the inside of the “vacuum heat insulating chamber” can be made to function as a “heat insulating part” by making it a vacuum state.

  Further, a hydrogen gas having a configuration in which a vacuum is formed in the vacuum heat insulating chamber Rs formed in the heat insulating portion forming region A4 to insulate between the adjacent groove forming regions A3 and A3 and between the adjacent groove forming regions A2 and A2. Although the cooling heat exchangers 30 and 30A to 30C have been described as examples, various materials having sufficiently lower thermal conductivity than the constituent materials of the “first plate” and the “second plate” ( (A gas, a liquid, or a solid) is filled in a portion corresponding to the vacuum heat-insulating chamber Rs in the heat-insulating portion forming region A4, and between adjacent two “first groove-forming regions” or both adjacent “second groove-forming regions”. A configuration that insulates the space may be adopted. In this case, a low thermal conductive ceramic containing zirconia or the like can be used as a solid material to be filled in a portion corresponding to the vacuum insulation chamber Rs.

  Furthermore, the example of the hydrogen gas cooling heat exchangers 30 and 30A to 30C configured with a plurality of “first plate bodies” and a plurality of “second plate bodies” has been described. And a plurality of "second plate members" to constitute a "plate-type heat exchanger", or a plurality of "first plate members" and one " A “plate type heat exchanger” including the “second plate” and a “plate type” including one “first plate” and one “second plate”. A heat exchanger "(both not shown).

  Further, the configuration of the hydrogen gas cooling heat exchangers 30, 30A to 30C in which the "first plate" and the "second plate" are stacked so as to be in direct contact with each other to form the main bodies 31, 31a to 31c. As an example, as described in the heat exchanger disclosed by the applicant, the “first plate (plate for hydrogen gas passage groove)” and the “second plate (plate for brine passage groove) The “body” may be configured by sandwiching “a plate having an arbitrary function” such as a “partition plate” between the “plates” (not shown).

  The hydrogen gas cooling heat exchanger 30 used in the hydrogen gas cooling device 1 configured to cool the brine, which is an example of the “cooling fluid,” by the refrigeration circuit 11 that is an example of the “one-way refrigeration circuit”, is taken as an example. As described above, the condenser of the second refrigeration circuit (the low-temperature refrigeration circuit) is cooled by the evaporator of the first refrigeration circuit (the high-temperature refrigeration circuit), so that the condenser of the second refrigeration circuit can be sufficiently cooled. The amount of the refrigerant is condensed in a short time, and the "cooling fluid" is cooled by the evaporator of the second refrigeration circuit, thereby reducing the temperature of the "cooling fluid" to a sufficiently low temperature suitable for cooling hydrogen gas. A hydrogen gas cooling heat exchanger 30, 30A-30C as a "plate heat exchanger" used in a "hydrogen gas cooling device" (not shown) provided with a "binary refrigeration circuit" capable of reducing Can be used That.

  Furthermore, the configuration of the hydrogen gas cooling heat exchangers 30 and 30A to 30C for cooling hydrogen gas by heat exchange with brine, which is an example of the “cooling fluid”, has been described as an example. When manufacturing a “plate-type heat exchanger” so that it can be used in a cooling method (a so-called refrigerant direct cooling type cooling method) in which hydrogen gas is cooled using a refrigerant (such as Freon gas) of the refrigeration circuit 11 or the like. The same configuration as the above-described hydrogen gas cooling heat exchangers 30, 30A to 30C can be adopted. In addition, when manufacturing the “plate heat exchanger” so as to be able to cool any fluid (liquid or gas) other than hydrogen gas as the “fluid to be cooled”, the hydrogen gas cooling heat exchanger 30 is used. , 30A to 30C can be employed.

Reference Signs List 100 hydrogen gas supply system 1 hydrogen gas cooling device 2 gas tank 3 dispenser 3a control valve 4a, 4b1, 4b2, 4c1, 4c2 hydrogen gas pipe 11 refrigeration circuit 12 brine tank 13a to 13d brine pipe 14a, 14b liquid feed pump 15 control unit 16 Flow control valve 30, 30A-30C Heat exchanger for hydrogen gas cooling 31, 31a-31c Main body 32 Blind header 32a Recess 40a, 40b Stack 41, 41b, 44, 44a-44c Base plate 42, 42a-42c Brine plate 43, 43a to 43c Hydrogen gas plate 45, 46 Heat insulating plate 45a Concave part 45b Convex part A1, A5 Joining area A2 Groove forming area A3 Groove forming area A4 Heat insulating part forming area Hia2 to Hia4, Hia21, Hia22, Hia3 , Hia32, Hia41, Hia42 Through-holes Hib2 to Hib4, Hib21, Hib22, Hib31, Hib32, Hib41, Hib42 Through-holes Hoa2 to Hoa4, Hoa21, Hoa22, Hoa31, Hoa32, HoaHo, HoaHo42, HoaHo, HoaHo42, HoaHoBo Hob31, Hob32, Hob41, Hob42 Through hole Hc4, Hc5 Through hole Rs Vacuum insulation chamber S2, S3 Slit X1, X2 Air supply target

Claims (7)

A first plate body having a first groove forming region in which a first fluid passage groove through which a cooling fluid can pass is formed, and a second fluid passage groove through which a cooling fluid can pass. In a state where a plurality of plate members including at least the second plate member having the formed second groove forming region are stacked in a predetermined stacking order, the bonding surfaces of the plate members are joined to each other, A plate heat configured to be able to cool the cooling fluid by heat exchange between the cooling fluid passing through the first fluid passage groove and the cooling fluid passing through the second fluid passage groove. An exchanger,
The first plate body has N1 (N1 is a natural number of 2 or more) first groove formation regions provided separately and independently, and the first plate member includes N1 (N1 is a natural number not less than 2) first grooves in each of the first groove formation regions. The cooling fluid is configured to be able to exchange heat with the cooling fluid without mixing the fluids to be cooled passing through the first fluid passage groove, and one of the first grooves is formed between adjacent first groove forming regions. The cooling target fluid passing through the first fluid passage groove in the groove forming region and the cooling target fluid passing through the other first fluid passage groove in the other first groove forming region. A plate heat exchanger provided with a first heat insulating region in which a first heat insulating portion for heat insulation is formed.   The second plate body has N2 (N2 is a natural number of 2 or more) second groove forming regions provided separately and independently, and the second plate member has the second groove member in each of the second groove forming regions. The cooling fluid passing through the second fluid passage groove is configured to be able to exchange heat with the fluid to be cooled without being mixed with each other, and one of the second grooves is provided between the adjacent second groove forming regions. Of the cooling fluid passing through the second fluid passage groove in the groove forming region of the other and the cooling fluid passing through the second fluid passage groove in the other second groove forming region. The plate heat exchanger according to claim 1, further comprising a second heat insulating region in which a second heat insulating portion for heat insulation is formed.   The first plate member includes N first groove forming regions as the N1 first groove forming regions, and the second plate member includes the N2 second groove forming regions. And the M-th (M is a natural number not less than 2 and not more than N) first groove-forming region and the M-th groove-forming region. The plate heat exchanger according to claim 1, wherein the first plate and the second plate are stacked such that the second groove forming region overlaps with the respective plates in the stacking direction. A first plate having a first fluid passage groove formed therein through which a fluid to be cooled can pass, and a second plate having a second fluid passage groove formed therein through which a cooling fluid can pass. And a plurality of plate bodies including at least the plate body are joined in a predetermined stacking order, the joining surfaces of the plate bodies are joined together, and the cooling fluid passing through the first fluid passage groove, A plate heat exchanger configured to be able to cool the fluid to be cooled by heat exchange with the cooling fluid passing through the second fluid passage groove,
L (L is a natural number of 2 or more) laminated bodies each including at least the first plate body and the second plate body are laminated, and the first plate in each laminated body is provided. The cooling fluid is configured to be heat-exchangeable with the cooling fluid without mixing the cooling fluids passing through the first fluid passage groove of the body, and one of the laminates is provided between adjacent laminates. The fluid to be cooled passing through the first fluid passage groove of the first plate body and the fluid to be passed through the first fluid passage groove of the first plate body in the other of the laminates A plate heat exchanger in which a third plate that constitutes a heat insulating portion that insulates a cooling fluid is interposed.   The heat exchange with the fluid to be cooled is performed without mixing the cooling fluids passing through the second fluid passage grooves of the second plate body in each of the laminates. Plate heat exchanger.   The plate heat exchanger according to claim 4, wherein each of the stacked bodies is configured by stacking the respective plate bodies including a plurality of the first plate bodies and a plurality of the second plate bodies. .   The plate heat exchanger according to any one of claims 1 to 6, wherein the plate heat exchanger is configured to be capable of cooling hydrogen gas as the fluid to be cooled.

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