JP3872913B2 - Heat utilization system using hydrogen storage alloy - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention repeatedly performs hydrogen occlusion and desorption of a hydrogen occlusion alloy to obtain a cold output by using an endothermic effect that occurs when hydrogen is released, or a thermal output that utilizes a heat dissipation effect that occurs when occludes hydrogen. The present invention relates to a heat utilization system using a hydrogen storage alloy that obtains the above.
[0002]
BACKGROUND OF THE INVENTION
In a heat utilization system using a hydrogen storage alloy, a heat exchanger that exchanges heat between the hydrogen storage alloy and the heat medium and stores and releases hydrogen in the hydrogen storage alloy is used.
As a conventional heat exchanger, a type using a shell and tube heat exchanger, or a fin type (for example, a special type) in which a container in which an alloy is accommodated (hereinafter referred to as an alloy container) is arranged radially along a rotation axis. The type disclosed in Japanese Utility Model Laid-Open No. 63-161366 is known, but the present applicant, as a heat exchanger that can be reduced in size, has a plurality of flatly arranged alloy containers in the direction of the rotation axis. A heat exchanger has been filed (Japanese Patent Application No. 9-265540) in which a plurality of alloy containers are arranged around the rotating shaft.
[0003]
[Problems to be solved by the invention]
As an example of efficiently manufacturing an alloy container winding type heat exchanger, it is conceivable to manufacture an alloy container by joining a pair of plates. The pair of plates is provided like a “middle skin” and is joined by a joining technique such as brazing.
However, the wound type alloy container requires a predetermined curvature for assembly, but the curvature of the alloy container varies due to misalignment at the time of joining such as brazing, and the predetermined around the rotating shaft. There arises a problem that a number of alloy containers cannot be assembled.
[0004]
OBJECT OF THE INVENTION
The present invention has been made in view of the above circumstances, and an object thereof is to provide a heat utilization system using a hydrogen storage alloy in which the heat exchanger can be easily downsized and the heat exchanger can be easily manufactured. is there.
[0006]
[Means for solving the problem]
  The heat utilization system using the hydrogen storage alloy of the present invention employs the following technical means in order to achieve the above object.
(Claims1Means)
  The heat utilization system using a hydrogen storage alloy uses heat absorption when hydrogen is released from the hydrogen storage alloy, or heat dissipation when hydrogen is stored.
  A plurality of pairs of plates each having a recess for an alloy storage chamber for storing a hydrogen storage alloy on one surface and a recess for a heat medium passage through which a heat medium flows are formed on the other surface to store the alloy. Chambers and heat medium passages are alternately formed in the stacking direction,
  A heat exchanger that performs heat exchange between the hydrogen storage alloy in the alloy housing chamber and the heat medium flowing through the heat medium passage;
  The pair of plates have a disk shape and are arranged in a shape in which the plurality of alloy storage chambers and the heat medium passage are wound around the center of the disk,
  A plurality of the pair of plates are stacked to form a cylindrical heat exchanger.
[0007]
(Claims2Means)
  The heat utilization system using a hydrogen storage alloy uses heat absorption when hydrogen is released from the hydrogen storage alloy, or heat dissipation when hydrogen is stored.
  A plurality of pairs of plates each having a recess for an alloy storage chamber for storing a hydrogen storage alloy on one surface and a recess for a heat medium passage through which a heat medium flows are formed on the other surface to store the alloy. Chambers and heat medium passages are alternately formed in the stacking direction,
  A heat exchanger that performs heat exchange between the hydrogen storage alloy in the alloy housing chamber and the heat medium flowing through the heat medium passage;
  Provided to form one alloy housing chamber by the pair of plates;
  A plurality of the pair of plates are arranged in a shape wound around the central axis and arranged in a disk shape, and a plurality of the pair of plates are laminated in the axial direction to form a cylindrical heat exchanger. It is characterized by.
[0009]
[Effects and effects of the invention]
(Claims1Action and effect)
  Since the heat exchanger can be realized by a stacked heat exchanger in which a plurality of pairs of plates are stacked, the heat exchanger can be reduced in size and the heat exchanger can be easily manufactured.
  In addition, the capacity of the heat exchanger can be easily adjusted by changing the number of layers, and the cost of the model corresponding to the capacity can be reduced.
  further,Although the alloy storage chamber and the heat medium passage are a type of heat exchanger wound around the central axis, since the plate exhibits a disk shape, even if a small amount of deviation occurs in the plates to be joined, A predetermined number of alloy storage chambers and heat medium passages are reliably arranged around the central axis. That is, a winding type heat exchanger having a cylindrical shape can be easily manufactured.
[0010]
(Claims2Action and effect)
  Since the heat exchanger can be realized by a stacked heat exchanger in which a plurality of pairs of plates are stacked, the heat exchanger can be reduced in size and the heat exchanger can be easily manufactured.
  In addition, the capacity of the heat exchanger can be easily adjusted by changing the number of layers, and the cost of the model corresponding to the capacity can be reduced.
  further,One by a pair of platesTogetherSince a gold storage chamber is formed and a pair of plates is combined to form a cylindrical heat exchanger, an error in the flatness of the disk is absorbed between a pair of plates adjacent in the circumferential direction during manufacturing, As a result, a winding type heat exchanger having a cylindrical shape can be easily manufactured.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described based on examples and modifications.
[Configuration of Example]
In this embodiment, a heat utilization system using a hydrogen storage alloy is applied to cooling for indoor air conditioning. The cooling device 1 will be described with reference to FIGS. In the cooling device 1 of this example, a two-stage cycle was used as an example of the heat exchange unit 2 using a hydrogen storage alloy.
[0012]
A schematic configuration of the cooling device 1 will be described with reference to FIG. The cooling device 1 includes a heat exchange unit 2 using a hydrogen storage alloy, a combustion device 3 that generates heated water for heating the hydrogen storage alloy (water corresponding to a heating medium in this embodiment), a hydrogen storage Facility water cooling means 4 that cools the facility water for cooling the alloy (water in this embodiment, which corresponds to a heat medium for heat dissipation) by heat radiation, and cooling heat that is cooled by heat absorption caused by the hydrogen releasing action of the hydrogen storage alloy It is comprised from the indoor air conditioner 5 which air-conditions a room | chamber interior with output water (it is water in a present Example corresponding to the heat medium for cold-heat output), and the control apparatus 6 which controls each electric functional component mounted.
[0013]
The heat exchange unit 2, the combustion device 3, the facility water cooling means 4 and the control device 6 are installed outside as an outdoor unit 7, and an indoor air conditioner 5 is arranged indoors. The cooling device 1 shown in the present embodiment is a so-called multi-air conditioner in which a plurality of indoor air conditioners 5 can be connected to one outdoor unit 7.
[0014]
(Description of heat exchange unit 2)
The heat exchange unit 2 includes a heat exchanger 8 that performs heat exchange between the hydrogen storage alloy and a plurality of heat media, and a distributor 9 that supplies and discharges the plurality of heat media. The heat exchanger 8 shown in the present embodiment has a cylindrical shape, and is provided so as to rotate around a columnar distributor 9 arranged in the horizontal direction (in FIG. 7, for convenience, the distributor 9 shows a figure arranged vertically).
[0015]
The heat exchanger 8 is formed by laminating a large number of flat disk-shaped cells S, and one disk-shaped cell S contains an alloy storage chamber 10 in which a hydrogen storage alloy is stored (see in hatching in FIG. 2A). A plurality of first to third containers S1 to S3}, which will be described later, are arranged radially, and the heat medium passage 11 {FIG. 2 (b) between the alloy container in the stacking direction (container constituting the alloy housing chamber 10) and the alloy container. In the hatching of b), see FIG.
[0016]
One cell S is formed by facing and joining a pair of plates 12 and 13 (see FIG. 1) formed by press-molding a metal having no hydrogen permeation, such as stainless steel or copper. 13 is formed with a recess for forming the alloy storage chamber 10 on one surface and a recess for forming the heat medium passage 11 on the other surface. In addition, the one plate 12 and the other plate 13 are provided so that the direction of the depression is symmetrical with respect to the overlapping surface.
As shown in FIG. 3, the heat exchanger 8 is a connecting pipe for stacking a large number of pairs of plates 12 and 13 (that is, disk-shaped cells S) to secure a hydrogen passage S4 at the outer end of the alloy container. In addition to assembling S5 and the end closing lid S6, a cylindrical pipe S7 for distributor sliding contact sealing is assembled on the inner periphery and joined by a joining method such as vacuum brazing or welding. The cylindrical pipe S7 is formed with an opening S8 for supplying and discharging the heat medium from the outer periphery of the distributor 9 to the heat medium passage 11.
[0017]
The number of alloy containers formed in one disk-shaped cell S is 2 × n (n = a positive integer) when the heat exchange unit 2 is in a one-stage cycle, and 3 × n in the case of a two-stage cycle. In the case of a three-stage cycle, 4 × n. In this embodiment, a two-stage cycle is adopted and six alloy containers are formed in one cell S.
A plurality of alloy containers formed in one disk-shaped cell S are arranged in a shape wound around the center of the disk. Thereby, the filling rate effective rate of the hydrogen storage alloy in the space occupied by the heat exchange unit 2 is increased, and as a result, the heat exchange unit 2 can be downsized.
[0018]
The heat exchange unit 2 of the present embodiment uses a two-stage cycle as described above, and the alloy container formed by laminating a large number of disk-shaped cells S has a high-temperature alloy HM sealed therein. One container S1, communicated with the first container S1 through a hydrogen passage S4, a second container S2 filled with a medium temperature alloy MM, communicated with the second container S2 through a hydrogen passage S4, and a low temperature alloy. It is classified into a third container S3 in which LM is enclosed.
[0019]
Three kinds of hydrogen storage alloys with different hydrogen equilibrium pressures are used, and the high temperature alloy HM enclosed in the first vessel S1 is a high temperature hydrogen storage alloy powder having the same equilibrium hydrogen pressure and the highest hydrogen equilibrium temperature. The medium temperature alloy MM sealed in the second container S2 is a powder of medium temperature hydrogen storage alloy, and the low temperature alloy LM sealed in the third container S3 is the lowest in hydrogen equilibrium temperature at the same equilibrium hydrogen pressure. Temperature hydrogen storage alloy powder.
This relationship will be described with reference to the PT refrigeration cycle diagram of FIG. 8. The characteristics of the hydrogen storage alloy are relatively high temperature side (left side in the drawing), high temperature alloy HM, low temperature side is low temperature alloy LM, The middle temperature alloy MM is in the middle of both.
The powdered alloys HM, MM, and LM are filled in the first to third containers S1 to S3, evacuated, subjected to activation treatment, and filled with hydrogen at a high pressure, and then filled with alloys. The opening 14 is sealed and sealed with a metal lid (not shown).
[0020]
The cylindrical heat exchanger 8 is provided so as to rotate around a distributor 9 having a columnar shape. The heat exchanger 8 is continuously rotationally driven by rotational drive means (for example, means for rotationally driving the heat exchanger 8 directly or indirectly via a gear, a belt or the like by an electric motor).
[0021]
The configuration of the distributor 9 is shown in FIG. The distributor 9 switches and supplies the heat medium that touches the first to third containers S1 to S3, and the cylindrical heat exchanger 8 rotates around the distributor 9 so that each alloy container is in contact with each other. The heat medium supplied to each heat medium passage 11 (between the stacking directions) is switched, and the first to third containers S1 to S3 connected by the hydrogen passage S4 are connected to the hydrogen driving unit α → first cooling output unit β. → Transition to the second cooling output unit γ (see FIG. 6).
[0022]
The hydrogen drive unit α is a part that forcibly moves the hydrogen in the first container S1 into the third container S3, and the first cold output unit β moves the hydrogen that has moved into the third container S3 to the second container S2. The second cold output part γ is a part for moving the hydrogen moved into the second container S2 to the first container S1.
The hydrogen driving unit α, the first cooling output unit β, and the second cooling output unit γ are provided at intervals of about 120 °, and the heating medium supply port and the heating medium discharge provided around the distributor 9 are provided. It is divided by the formation range of the outlet.
[0023]
The hydrogen drive unit α is supplied with a heating area α1 in which heated water (for example, about 80 ° C.) is supplied in contact with the first container S1, and a second pressure in which pressurized water (for example, about 56 ° C.) is in contact with the second container S2. The pressure increasing area α2 is provided with a third heat radiating area α3 to which facility water (for example, about 28 ° C.) in contact with the third container S3 is supplied.
The first cooling output unit β is supplied with a first pressure increase region β1 supplied with pressurized water (for example, about 58 ° C.) in contact with the first container S1, and with facility water (for example, about 28 ° C.) in contact with the second container S2. And a third heat output region β3 to which cold output water (for example, about 13 ° C.) in contact with the third container S3 is supplied.
The second cooling output unit γ has a first heat radiation area γ1 supplied with facility water (for example, about 28 ° C.) in contact with the first container S1, and a cold output water (for example, about 13 ° C.) in contact with the second container S2. A second cold power output region γ2 to be supplied is provided. Note that the temperature of the heat medium in contact with the third container S3 in the second cold output part γ is not questioned, and this part is defined as an unquestioned area γ3.
[0024]
Then, when the heat exchanger 8 is rotated by the rotation driving means, the group of the first containers S1 repeats the heating area α1 → the first pressure increasing area β1 → the first heat radiation area γ1, and the group of the second containers S2 is the second. The step-up region α2 → the second heat radiation region β2 → the second cooling output region γ2 is repeated, and the group of the third container S3 repeats the third heat radiation region α3 → the third cooling output region β3 → the unquestioned region γ3.
[0025]
(Description of components other than the above in the heat exchange unit 2)
Reference numeral 15 shown in FIG. 7 denotes a booster water circulation path for circulating the booster water between the first booster zone β1 and the second booster zone α2, and the booster water is circulated by the booster water circulation pump P1 'provided in the middle. The pressurized water uses water whose temperature has increased due to heat transfer from the first container S1 whose temperature has increased in the heating region α1, and the temperature of the pressurized water in the first pressure region β1 during operation of the heat exchange unit 2. Is approximately 58 ° C., for example, and the temperature of the boosted water in the second pressure increasing region α 2 is approximately 56 ° C.
[0026]
(Description of combustion device 3)
The combustion apparatus 3 according to the present embodiment uses a gas combustion apparatus that burns gas as fuel to generate heat and heats heated water by the generated heat. The gas burner 16 performs gas combustion, and the gas burner. A gas supply circuit 19 having a gas amount adjusting valve 17 and a gas opening / closing valve 18 for supplying gas to the gas 16, a combustion fan 20 for supplying combustion air to the gas burner 16, and heat exchange between the combustion heat of the gas and the heating water It comprises a heat exchanger 21 and the like.
The heated water is heated to, for example, about 80 ° C. with the heat obtained by gas combustion of the gas burner 16, and the heated heated water is supplied to the heating zone α1 through the heated water circulation path 22 equipped with the heated water circulation pump P1. To do.
The heating water circulation pump P1 of this embodiment is a tandem pump that is driven by a dual-purpose motor that drives the pressurized water circulation pump P1 '. For this reason, when heated water is supplied from the combustion device 3 to the heat exchange unit 2, the pressurized water is also provided so as to circulate.
[0027]
(Description of indoor air conditioner 5)
The indoor air conditioner 5 is arranged indoors as described above, and forcibly exchanges heat between the indoor heat exchanger 23 and cold output water supplied to the indoor heat exchanger 23 and indoor air. An indoor fan 24 is provided for blowing the air after heat exchange into the room. The indoor heat exchanger 23 is connected with a cooling output water circulation path 25 for circulating the cooling output water supplied from the third cooling output area β3 and the second cooling output area γ2, and a halfway (outdoors) of the cooling output water circulation path 25 In the machine 7), a cold output water pump P2 (corresponding to an output pump) for circulating the cold output water is provided.
[0028]
(Description of facility water cooling means 4)
The facility water cooling means 4 is a water-cooled open type cooling tower, and the facility water cooled by the facility water cooling means 4 is supplied to the third heat radiation zone α3, second by the facility water circulation path 26 provided with the facility water circulation pump P3. It is supplied to the heat radiation area β2 and the first heat radiation area γ1.
The facility water cooling means 4 radiates the facility water that has passed through the third radiating region α3, the second radiating region β2, and the first radiating region γ1 from the top to the bottom and radiates heat by exchanging heat with the outside air. At the same time, it partially evaporates during the flow, takes heat of vaporization from the facility water flowing at the time of evaporation, and cools the flowing facility water. The facility water cooling means 4 includes a heat dissipation fan (not shown), and is provided so as to promote evaporation and cooling of the facility water by an air flow generated by the heat dissipation fan.
In this embodiment, a water-cooled open type cooling tower is shown as the facility water cooling means 4, but a water-cooled sealed type or an air-cooled sealed type in which the facility water (heat-dissipating heat medium) exchanges heat without touching the air. A cooling means may be used.
[0029]
Here, the heating water circulation path 22, the cooling / heating output water circulation path 25, and the facility water circulation path 26 described above have cis-turns T1, T2, and T3, respectively, and the water levels in the cis-turns T1, T2, and T3 are lowered below a predetermined water level. Then, the water supply valves T4, T5, and T6 provided to the respective valves are opened so that the tap water supplied from the water supply pipe 27 is replenished into the cisterns T1, T2, and T3.
In addition, a drain pan P is disposed at the lower part of the heat exchange unit 2 so as to drain the drain water generated in the heat exchange unit 2 from the drain pipe 28. The water overflowing from the facility water cooling means 4 is also provided to drain from the drain pipe 28.
[0030]
(Description of the control device 6)
The control device 6 responds to an operation instruction from a controller provided in the indoor air conditioner 5 and an input signal of each of a plurality of sensors, and the above-described heated water circulation pump P1 (pressurized water circulation pump P1 '), cold output water Pump P2, facility water circulation pump P3, water supply valves T4, T5, T6, electrical function parts such as a heat radiation fan of the facility water cooling means 4, and electrical function parts of the combustion device 3 (ignition device not shown, gas amount control valve 17, The gas on-off valve 18 and the combustion fan 20 are controlled, and an operation instruction for the indoor fan 24 is given to the indoor air conditioner 5.
[0031]
(Description of cooling operation)
The operation of the cooling operation by the cooling device 1 will be described with reference to the PT refrigeration cycle diagram of FIG.
When the cooling operation is instructed by the controller of the indoor air conditioner 5, the control device 6 causes the combustion device 3, the rotation driving means, the heat radiating fan, the heating water circulation pump P1 (pressure-boosting water circulation pump P1 '), the cold output water pump P2, and the heat radiation. The water circulation pump P3 is activated, and the indoor fan 24 of the indoor air conditioner 5 instructed to be cooled is turned on.
[0032]
The heat exchanger 8 continuously rotates by the rotation driving means. As a result, a large number of alloy containers move in the order of the hydrogen drive unit α → the first cold output unit β → the second cold output unit γ.
That is, each first container S1 moves in the order of heating area α1 → first pressure increasing area β1 → first heat radiation area γ1, and each second container S2 moves to second pressure increasing area α2 → second heat radiation area β2 → second cold heat. The third container S3 moves in the order of the output region γ2, and the third containers S3 move in the order of the third heat radiation region α3 → the third cooling output region β3 → the unquestioned region γ3.
[0033]
When moving to the hydrogen drive unit α, the first container S1 touches the heated water, the second container S2 touches the pressurized water, and the third container S3 touches the facility water.
When the first container S1 comes into contact with heated water (80 ° C.), the internal pressure of the first container S1 rises, and the high temperature alloy HM releases hydrogen.
When the second container S2 touches the pressurized water (56 ° C.), the internal pressure of the second container S2 rises to a pressure at which the intermediate temperature alloy MM does not occlude hydrogen.
When the third container S3 comes into contact with the facility water (28 ° C.), the internal pressure of the third container S3 decreases, and the low temperature alloy LM occludes hydrogen.
[0034]
Thus, the first container S1 touches the heated water in the heating area α1, the second container S2 touches the pressurized water in the second pressure increasing area α2, and the third container S3 touches the facility water in the third heat radiating area α3. As a result, the inside of the first container S1 is 80 ° C .: 1.0 MPa, the inside of the second container S2 is 56 ° C .: 1.0 MPa, the inside of the third container S3 is 28 ° C .: 0.9 MPa, and the high temperature alloy HM of the first container S1. Releases hydrogen ((1) in FIG. 8), and the low temperature alloy LM in the third container S3 occludes hydrogen ((2) in FIG. 8). The second container S2 is heated by the pressurized water and has a high internal pressure, and the intermediate temperature alloy MM does not occlude hydrogen.
And if it passes hydrogen drive part alpha, it will move to the 1st cold output part beta after that.
[0035]
When moving to the first cold output unit β, the first container S1 touches the pressurized water, the second container S2 touches the facility water, and the third container S3 touches the cold output water.
When the first container S1 comes into contact with the pressurized water (58 ° C.), the internal pressure of the first container S1 rises to a pressure at which the high temperature alloy HM does not occlude hydrogen.
When the second container S2 touches the facility water (28 ° C.), the internal pressure of the second container S2 decreases, the intermediate temperature alloy MM occludes hydrogen, and the low temperature alloy LM of the third container S3 releases hydrogen.
Since the low temperature alloy LM releases hydrogen, heat is generated in the third container S3, and the cold output water touching the third container S3 is cooled to, for example, 7 ° C. The low temperature alloy LM is provided so that the internal pressure of the third container S3 is higher than the internal pressure of the second container S2 when the cold output water is about 13 ° C.
[0036]
In this way, the first container S1 touches the pressurized water in the first pressurization zone β1, the second container S2 touches the tap water in the second heat dissipation zone β2, and the third container S3 touches the cooling water output in the third cooling power output zone β3. By touching water, the inside of the first container S1 is 58 ° C .: 0.5 MPa, the inside of the second container S2 is 28 ° C .: 0.4 MPa, the inside of the third container S3 is 13 ° C .: 0.5 MPa, and the third container S3 The low temperature alloy LM releases hydrogen ((3) in FIG. 8), and the intermediate temperature alloy MM in the second container S2 occludes hydrogen ((4) in FIG. 8). When the low temperature alloy LM in the third container S3 releases hydrogen, the heat is taken from the cold output water that touches the third container S3 due to the endothermic effect, and the temperature of the cold output water is lowered. The first container S1 is heated by the pressurized water and has a high internal pressure, and the high temperature alloy HM does not occlude hydrogen.
And if it passes the 1st cold-heat output part (beta), it will move to the 2nd cold-heat output part (gamma) after that.
[0037]
When the process proceeds to the second cold output unit γ, the first container S1 touches the facility water, the second container S2 touches the cold output water, and the third container S3 touches the unquestioned water.
When the first container S1 touches the facility water (28 ° C.), the internal pressure of the first container S1 decreases, the high temperature alloy HM occludes hydrogen, and the medium temperature alloy MM of the second container S2 releases hydrogen.
Since the intermediate temperature alloy MM releases hydrogen, heat is generated in the second container S2, and the cold output water touching the second container S2 is cooled to, for example, 7 ° C. The intermediate temperature alloy MM is provided so that the internal pressure of the second container S2 is higher than the internal pressure of the first container S1 when the cold output water is about 13 ° C.
[0038]
Thus, when the first container S1 touches the facility water in the first heat radiation zone γ1, the inside of the first container S1 is 28 ° C .: 0.1 MPa, the inside of the second container S2 is 13 ° C .: 0.2 MPa, and the third The inside of the container S3 becomes unquestioned, the intermediate temperature alloy MM in the second container S2 releases hydrogen ((5) in FIG. 8), and the high temperature alloy HM in the first container S1 occludes hydrogen ((6) in FIG. 8). ). When the intermediate temperature alloy MM in the second container S2 releases hydrogen, the heat is taken from the cold output water that touches the second container S2 by the endothermic action, and the temperature of the cold output water is lowered. The temperature of the third container S3 is irrelevant, and the low temperature alloy LM of the third container S3 does not occlude hydrogen.
And if it passes the 2nd cold-power output part (gamma), it will move to the hydrogen drive part (alpha) after that.
[0039]
The low-temperature cold output water deprived of heat in the third cold output area β3 and the second cold output area γ2 of the heat exchange unit 2 is supplied to the indoor heat exchanger of the indoor air conditioner 5 via the cold output water circulation path 25. Heat is exchanged with the air supplied to the room 23 and blown into the room to cool the room.
[0040]
[Effects of Examples]
Since the heat exchanger 8 can be realized by the stacked heat exchanger 8 in which the pair of plates 12 and 13 are laminated, the heat exchanger 8 can be reduced in size and the heat exchanger 8 can be easily manufactured.
Moreover, although it is the alloy container winding type heat exchanger 8, since the plate exhibits a disk shape, even if a small amount of deviation occurs in the plate to be joined, it is around the shaft (distributor 9). A predetermined number of alloy containers are reliably assembled. That is, the alloy container winding type heat exchanger 8 can be easily manufactured.
Furthermore, the capability of the heat exchanger 8 can be easily adjusted by changing the number of layers, and the cost of the model corresponding to the capability can be reduced.
[0041]
[Modification]
In the above embodiment, an example in which a plurality of alloy storage chambers 10 are formed by a pair of plates 12 and 13 has been shown. However, as shown in FIG. A chamber 10 is formed, and a plurality of the alloy housing chambers 10 are arranged so as to be wound around the rotation shaft to be provided in a flat disk shape, and a cylindrical heat exchanger 8 is manufactured by stacking alloy containers in the axial direction. You may do it. Note that the pair of plates 12 and 13 forming each alloy storage chamber 10 are in contact with each other only in the circumferential direction, and are not welded. By providing the heat exchanger 8 in this way, the flatness error of the disk is absorbed between the pair of plates 12 and 13 adjacent in the circumferential direction at the time of manufacturing the heat exchanger 8, and as a result, the winding type has a cylindrical shape. The heat exchanger 8 can be easily manufactured.
[0042]
In the above-described embodiment, an apparatus for cooling only is shown as an example, but the present invention may be applied to an air conditioning apparatus. As a specific example, the heating water heated by the combustion device 3 may be provided to guide the indoor heat exchanger 23 of the indoor air conditioner 5 to perform indoor heating. Further, the heating water heated by the combustion device 3 may be connected to a floor heating mat, a bathroom dryer, or the like, and floor heating, bathroom heating, or the like may be performed by supplying heated water.
In the embodiment described above, an example in which a plurality of alloy containers are configured by joining a pair of plates 12 and 13 may be provided, but a pair of plates 12 and 13 may be provided so as to configure one alloy container. That is, one alloy container may be constituted by a pair of plates 12 and 13, and a cell S on a disk may be constituted by combining them, and the heat exchanger 8 may be constituted by stacking the cells S.
[0043]
In the above embodiment, the heat medium passage 11 is flowed from the inner peripheral side to the outer peripheral side, turned on the outer peripheral side, and flows again to the inner peripheral side. However, the flow direction by the heat medium passage 11 is changed. You may do it. For example, contrary to the above-described embodiment, the heat medium is flown from the outer peripheral side to the inner peripheral side, is turned on the inner peripheral side, and is flown again to the outer peripheral side, or from the inner peripheral side only to the outer peripheral side, or from the outer peripheral side. Only the inner circumference side or a combination of these flow directions may be applied.
[0044]
In the above embodiment, the example in which the heat exchanger 8 is continuously rotated by the rotation driving means has been described. However, the heat exchanger 8 may be intermittently rotated.
In the above-described embodiment, an example in which the rotation shaft (distributor 9) of the heat exchanger 8 is arranged horizontally has been shown, but it may be arranged vertically or obliquely. Further, the arrangement order of the first container S1, the second container S2, and the third container S3 may be modified so that the heat exchange unit touching each alloy container can also be realized by the heat exchange unit.
[0045]
In the above-described embodiment, an example is shown in which the heat medium (the pressurized water in the embodiment) that has been heated by cooling the first container S1 that has been heated in the heating region α1 is used as the pressure medium. You may use the heat medium heated up by the heating means (For example, the temperature rising by a combustion apparatus, the temperature rising by an electric heater, the temperature rising using exhaust heat, etc.).
In the above embodiment, an example in which a two-stage cycle is used is shown as an example of the heat exchange unit 2, but it may be used for a one-stage cycle or a three-stage or more cycle.
[0046]
In the above embodiment, a multi air conditioner in which a plurality of indoor air conditioners 5 can be connected to one outdoor unit 7 is shown. However, the present invention is applied to an air conditioner in which one indoor air conditioner 5 is connected to one outdoor unit 7. It may be applied.
In the above embodiment, an example in which the room is cooled with the heat medium for cooling output (cold output water in the embodiment) obtained by the heat exchange unit 2 has been shown. The present invention may be used as another cooling device such as a freezing operation.
In the above embodiment, an example in which one heat exchange unit 2 (a unit constituted by one distributor 9 and one heat exchanger 8) is used is shown, but a plurality of heat exchange units 2 are mounted. The cooling capacity may be increased and used for a cooling apparatus that requires a large cooling capacity such as a building air conditioning system.
[0047]
In the above embodiment, the gas combustion apparatus for burning gas is used as the heating means for heating the heating medium (heating water in the embodiment), but other combustion such as an oil combustion apparatus for burning oil is used. An apparatus may be used, and other heating means such as a heating means for heating a heat medium for heating by exhaust heat of the internal combustion engine, a steam by a boiler, a heating means using an electric heater, or the like may be used. In addition, when utilizing the exhaust heat of an internal combustion engine, it can also use for vehicles.
In the above embodiment, tap water is used as an example of each heat medium, but other liquid heat medium such as antifreeze liquid or oil may be used, or a gas heat medium such as air may be used.
In the above embodiment, the cooling device that obtains the cold output by the endothermic action when the hydrogen storage alloy releases hydrogen is shown as an example, but the heating that obtains the thermal output by the heat release action when the hydrogen storage alloy absorbs hydrogen. The present invention may be applied to a device (for example, a heating device).
[Brief description of the drawings]
FIG. 1 is a plan view of a plate (Example).
FIG. 2 is an explanatory view of an alloy storage chamber and a heat medium passage (Example).
FIG. 3 is a cross-sectional view of a heat exchanger (Example).
FIG. 4 is an explanatory view showing a flow of a heat medium by a distributor (Example).
FIG. 5 is an explanatory view showing a flow of a heat medium supplied to each heat medium passage (Example).
FIG. 6 is an operation explanatory view of a heat exchange unit (Example).
FIG. 7 is a schematic configuration diagram of a cooling device (Example).
FIG. 8 is a PT refrigeration cycle diagram (Example).
FIG. 9 is a diagram in which a plurality of alloy storage chambers are arranged around a central axis (modified example).
[Explanation of symbols]
HM high temperature alloy (hydrogen storage alloy)
MM Medium temperature alloy (hydrogen storage alloy)
LM Low temperature alloy (hydrogen storage alloy)
2 Heat exchange unit
8 Heat exchanger
9 Distributor
10 Alloy chamber
11 Heat medium passage
12 One plate
13 The other plate

Claims (2)

The heat absorption system using the hydrogen storage alloy that uses the heat absorption during the release of hydrogen of the hydrogen storage alloy or the heat dissipation during the storage of hydrogen,
A plurality of pairs of plates each having a recess for an alloy storage chamber for storing a hydrogen storage alloy on one surface and a recess for a heat medium passage through which a heat medium flows are formed on the other surface to store the alloy. Chambers and heat medium passages are alternately formed in the stacking direction,
A heat exchanger that performs heat exchange between the hydrogen storage alloy in the alloy housing chamber and the heat medium flowing through the heat medium passage;
The pair of plates have a disk shape and are arranged in a shape in which the plurality of alloy storage chambers and the heat medium passage are wound around the center of the disk,
A heat utilization system using a hydrogen storage alloy, wherein a plurality of the pair of plates are stacked to form a cylindrical heat exchanger. The heat absorption system using the hydrogen storage alloy that uses the heat absorption during the release of hydrogen of the hydrogen storage alloy or the heat dissipation during the storage of hydrogen,
A plurality of pairs of plates each having a recess for an alloy storage chamber for storing a hydrogen storage alloy on one surface and a recess for a heat medium passage through which a heat medium flows are formed on the other surface to store the alloy. Chambers and heat medium passages are alternately formed in the stacking direction,
A heat exchanger that performs heat exchange between the hydrogen storage alloy in the alloy housing chamber and the heat medium flowing through the heat medium passage;
Provided to form one alloy housing chamber by the pair of plates;
A plurality of the pair of plates are arranged in a shape wound around the central axis and arranged in a disk shape, and a plurality of the pair of plates are laminated in the axial direction to form a cylindrical heat exchanger. Heat utilization system using hydrogen storage alloy characterized by

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