JP2018059682A - Chemical heat storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical heat storage device capable of preventing deformation of a filter due to expansion of a reaction material.SOLUTION: A chemical heat storage device includes: a reaction vessel 11 having a storage part 32 for storing a reaction material 24 which generates heat by a chemical reaction with NHand in which NHis desorbed; an adsorber for storing NH; and a supply pipe 13 for connecting the storage part 32 and the adsorber, and for forming a flow passage in which NHflows. The reaction vessel 11 has a lid body 28 to which one end part of the supply pipe 13 is fixed. Between the reaction material 24 and the lid body 28 in the storage part 32, filters 29 for capturing the reaction material 24 are arranged, and on the opposite side of the reaction material 24 with respect to the filters 29 in the storage part 32, a support member 30 that has a plurality of hole parts 31 in which NHpasses and suppresses deformation of the filters 29 is arranged.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a chemical heat storage device.

  As a conventional chemical heat storage device, for example, a device described in Patent Document 1 is known. The chemical heat storage device described in Patent Document 1 is connected to an evaporation condenser in which water is evaporated and condensed, a reactor in which a hydration reaction or dehydration reaction of the heat storage material is performed, an evaporation condenser and a reactor, It has a water vapor channel which makes these inside communicate. The reactor is adjacent to the heat medium flow path through which the heat medium flows, and includes a reaction vessel provided with a flow path through which water vapor flows from the water vapor flow path, a heat storage material provided in the reaction container, and the flow path and the heat storage material. And a filter that regulates the intrusion of the powder of the heat storage material into the flow path.

JP 2014-185882 A

  However, in the above prior art, when the hydration reaction between the heat storage material (reaction material) and water is performed, the reaction material expands and the filter is deformed. When the filter is deformed, the powder collecting performance by the filter is lowered.

  The objective of this invention is providing the chemical heat storage apparatus which can prevent the deformation | transformation of the filter by expansion | swelling of a reaction material.

  A chemical heat storage device according to one embodiment of the present invention includes a reactor having a storage portion that stores a reaction material that generates heat and is desorbed by heat due to a chemical reaction with the reaction medium, and a reservoir that stores the reaction medium. A supply pipe that connects the reactor and the reservoir and forms a flow path through which the reaction medium flows, and the reactor has a wall portion to which one end of the supply pipe is fixed, and the reaction material in the storage section A filter for collecting the reaction material is disposed between the filter and the wall, and a plurality of holes through which the reaction medium passes are provided on the opposite side of the reaction material to the filter in the housing portion. A support member that suppresses deformation is disposed.

  In such a chemical heat storage device, when the reaction medium is supplied from the reservoir to the accommodating portion of the reactor through the supply pipe, the reaction material generates heat due to a chemical reaction between the reaction medium and the reaction material. When heat is applied to the reaction material, the reaction medium is desorbed from the reaction material, and the reaction medium is recovered from the storage part of the reactor to the reservoir through the supply pipe. Here, a filter for collecting the reaction material is disposed between the reaction material and the wall in the accommodating portion of the reactor. However, when the reaction medium and the reaction material chemically react, the reaction material expands, which leads to deformation of the filter. Therefore, even if the reaction material expands, the support member is provided on the opposite side of the reaction material with respect to the filter in the housing portion by disposing a support member having a plurality of holes through which the reaction medium passes to suppress deformation of the filter. Therefore, the deformation of the filter can be suppressed. Thus, the deformation of the filter due to the expansion of the reaction material can be prevented.

  A plurality of filters may be arranged in a stacked state via a support member between the reaction material and the wall in the container. In this case, since the filter has a multi-layer structure, when the reaction material in the housing portion is chipped, the performance of collecting fragments of the reaction material by the filter increases.

  The plurality of filters may have different eye roughness and may be arranged so that the eyes become finer from the reaction material side toward the wall portion side. In this case, clogging of the filter disposed on the reaction material side is suppressed. Therefore, the reaction medium easily flows between the reaction material and the supply pipe.

  The reactor has a partition wall that partitions the housing portion together with the wall portion, the wall portion is fixed to the partition wall, and a partial region of the filter and the support member is formed with an end portion on the wall portion side of the partition wall. It may be sandwiched between the wall portion. In this case, deformation of the filter due to expansion of the reaction material can be further prevented.

  The outer edge portion of the filter and the support member may be sandwiched between the wall portion side end of the partition wall and the wall portion. In this case, when the reaction material in the housing portion is chipped, it is difficult for the fragments of the reaction material to pass through between the outer edge of the filter and the support member and the partition wall and to flow out to the supply pipe.

  A stepped portion having a stepped surface is provided at the end of the partition wall on the wall portion side, and the outer edge portion of the filter and the support member may be sandwiched between the stepped surface and the wall portion. In this case, the outer edge portions of the filter and the support member can be securely held between the end portion of the partition wall on the wall portion side and the wall portion.

  The step portion has a multi-stage shape having a plurality of step surfaces, and a plurality of filters and support members may be alternately arranged for each step of the step portion. In this case, the plurality of filters and the plurality of support members are sandwiched between the plurality of step surfaces and the lid. Therefore, it is more difficult for the fragments of the reaction material to pass through between the outer edges of the filter and the support member and the casing and to flow out to the supply pipe.

  A space may be provided between the support member and the wall portion. In this case, the reaction medium supplied into the reactor vessel is diffused toward the reaction material. Therefore, since the chemical reaction between the reaction medium and the reaction material proceeds uniformly, the reaction material easily generates heat.

  According to the present invention, it is possible to prevent deformation of the filter due to expansion of the reaction material.

It is a schematic block diagram which shows the engine oil circulation system provided with the chemical heat storage apparatus which concerns on one Embodiment of this invention with an exhaust gas purification system. It is a figure which shows roughly the structure of the reactor shown by FIG. FIG. 3 is a cross-sectional view of the reactor shown in FIG. 2. It is the IV-IV sectional view taken on the line of FIG. FIG. 5 is a schematic plan view of the filter and support member shown in FIG. 4. FIG. 5 is a cross-sectional view illustrating a state when expansion of a reaction material occurs when the support member illustrated in FIG. 4 is not disposed in the container. It is sectional drawing which shows a state when expansion | swelling of a reaction material generate | occur | produces, when the supporting member shown by FIG. 4 is arrange | positioned in a container. It is sectional drawing which shows the modification of the reactor shown by FIG. It is the IX-IX sectional view taken on the line of FIG. FIG. 10 is an enlarged cross-sectional view of the reactor shown in FIG. 9. It is an expanded sectional view which shows the modification of the reactor shown by FIG. It is sectional drawing which shows the modification of the reactor shown by FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a schematic configuration diagram showing an engine oil circulation system including a chemical heat storage device according to an embodiment of the present invention together with an exhaust purification system. In FIG. 1, an exhaust purification system 1 and an engine oil circulation system 2 are provided in a vehicle on which an engine 3 is mounted.

  The exhaust purification system 1 purifies harmful substances (environmental pollutants) contained in the exhaust gas discharged from the engine 3. The exhaust purification system 1 includes an exhaust pipe 4 that forms a flow path through which exhaust gas discharged from the engine 3 flows, and a DOC 5 disposed in the exhaust pipe 4. The DOC 5 is a diesel oxidation catalyst that oxidizes and purifies HC and CO contained in exhaust gas. On the downstream side of the DOC 5 in the exhaust pipe 4, a bypass pipe 6 that forms a flow path through which exhaust gas flows is branched and connected.

  The engine oil circulation system 2 circulates engine oil for lubricating each part in the engine 3. The engine oil circulation system 2 includes an oil circulation line 7 that forms a flow path through which engine oil flows, and an oil pan 8 and an oil pump 9 that are disposed in the oil circulation line 7. The oil pan 8 stores engine oil. The oil pump 9 sucks up the engine oil stored in the oil pan 8 and pumps it to the engine 3. The engine oil that has flowed through each part in the engine 3 returns to the oil pan 8.

  In addition, the engine oil circulation system 2 includes the chemical heat storage device 10 of the present embodiment that heats (warms up) the engine oil to be heated. The chemical heat storage device 10 is a device that heats engine oil without requiring external energy such as electric power. The chemical heat storage device 10 includes a reactor 11, an adsorber 12, a supply pipe 13, and a valve 14.

  The reactor 11 is connected to the oil circulation line 7 and the bypass line 6, respectively. The oil circulation line 7 includes an oil pipe 15 that connects the oil pan 8 and the reactor 11, an oil pipe 16 that connects the reactor 11 and the engine 3, and an oil pipe that connects the engine 3 and the oil pan 8. 17. The oil pump 9 is disposed in the oil pipe 15. The bypass line 6 has bypass pipes 18 and 19 that connect the exhaust pipe 4 and the reactor 11. The bypass pipe 19 is connected to the downstream side of the exhaust pipe 4 with respect to the bypass pipe 18. The bypass pipe 19 is provided with an on-off valve 20 that opens and closes an exhaust gas flow path.

  As shown in FIG. 2, the reactor 11 includes a plurality of reaction portions 21, a plurality of oil passage portions 22 through which engine oil passes, and a plurality of exhaust gas passage portions 23 through which exhaust gas passes. The reactor 11 has a laminated structure in which a reaction part 21, an oil passage part 22, and an exhaust gas passage part 23 are laminated. At this time, the oil passage portions 22 and the exhaust gas passage portions 23 are alternately stacked via the reaction portions 21.

A reaction material 24 is accommodated in the reaction unit 21. The reaction member 24, when ammonia is the reaction medium (NH ₃₎ are supplied, as well as heat by chemical reaction with NH _3, the heat of the exhaust gas is supplied, NH ₃ is desorbed by the heat of exhaust gas Material. As the reaction material 24, a halide represented by a composition formula MaXz is used. M is an alkali metal such as Li or Na, an alkaline earth metal such as Mg, Ca or Sr, a transition metal such as Cr, Mn, Fe, Co, Ni, Cu or Zn, Al, or a combination of these metals. One or more selected cations. X is one or more anions selected from fluoride ion, chloride ion, bromide ion, iodide ion, nitrate ion, thiocyanate ion, sulfate ion, molybdate ion or phosphate ion. X is, for example, Cl, Br, I or the like. a is the number of cations per salt molecule. z is the number of anions per salt molecule.

  Each oil passage portion 22 is connected to oil pipes 15 and 16, respectively. The oil passage portion 22 may have a plurality of fins for promoting heat exchange between the engine oil and the reaction material 24.

  Each exhaust gas passage portion 23 is connected to the bypass pipes 18 and 19, respectively. The exhaust gas passage portion 23 may have a plurality of fins for promoting heat exchange between the exhaust gas and the reaction material 24.

The adsorber 12 is a reservoir that stores NH ₃ . The adsorber 12 includes an adsorbent 25 that physically adsorbs NH ₃ when generating heat and desorbs NH ₃ when absorbing heat. As the adsorbent 25, activated carbon, carbon black, mesoporous carbon, nanocarbon, zeolite, or the like is used. NH ₃ may be chemically adsorbed on the adsorbent 25.

The supply pipe 13 connects each reaction part 21 of the reactor 11 and the adsorber 12. The supply pipe 13 forms a flow path in which NH ₃ flows bidirectionally between each reaction portion 21 and the adsorber 12. The supply pipe 13 is formed of a metal material (for example, stainless steel) having corrosion resistance against NH ₃ . The valve 14 is disposed in the supply pipe 13. The valve 14 is an on-off valve that opens and closes the NH ₃ flow path.

FIG. 3 is a cross-sectional view of the reactor 11. 4 is a cross-sectional view taken along line IV-IV in FIG. 3 and 4, the reactor 11 has a rectangular parallelepiped housing 26. The casing 26 is made of a metal material (for example, stainless steel) that has corrosion resistance to NH ₃ . The housing 26 includes a partition wall 27 that partitions the reaction portion 21, the oil passage portion 22, and the exhaust gas passage portion 23 so as not to contact each other, and a lid 28 fixed to the partition wall 27. The lid 28 is a flat plate having a rectangular shape in plan view. The lid 28 constitutes a wall portion to which one end of the supply pipe 13 is fixed.

  The reaction unit 21 includes a storage unit 32 that stores the reaction material 24 as a molded body. The partition wall 27 partitions the housing portion 32 together with the lid body 28. One end of the supply pipe 13 is connected to the accommodating part 32. The accommodating part 32 is formed in the bottomed square cylinder shape which has the opening part 32a.

  Between the reaction material 24 and the lid 28 in the housing portion 32, there are a plurality of (here, three) filters 29 that collect the reaction material 24, and a plurality (here, two) that suppress deformation of the filter 29. ) Support members 30 are alternately arranged in a stacked state. That is, the filter 29 and the support member 30 have a multilayer structure. One filter 29 is disposed adjacent to the reaction material 24. The support member 30 is disposed on the opposite side (the lid body 28 side) of the reaction material 24 with respect to the filter 29 in the housing portion 32. Therefore, a plurality of filters 29 are arranged in a stacked state via the support member 30 between the reaction material 24 and the lid 28 in the housing portion 32.

  A partial region of each filter 29 and each support member 30 is sandwiched between the end of the partition wall 27 on the side of the lid 28 and the lid 28. Specifically, a partial region of each filter 29 and each support member 30 is formed by covering the end of the partition wall 27 on the side of the lid body 28 and the end of the region that divides each oil passage 22 and one exhaust gas passage 23. It is sandwiched between the body 28.

The filter 29 is formed of a metal material (for example, nickel or stainless steel) having corrosion resistance against NH ₃ . Note that only the surface of the filter 29 may be protected with a metal material having corrosion resistance to NH ₃ . The thickness of the filter 29 is, for example, about 0.3 mm.

  As shown in FIG. 5A, the filter 29 has a rectangular shape in plan view. The filter 29 is composed of, for example, a mesh. The plurality of filters 29 have different eye roughness. The plurality of filters 29 are arranged so that the eyes become finer from the reaction material 24 side toward the lid body 28 side. That is, the eyes of the filter 29 on the reaction material 24 side are rougher than the eyes of the filter 29 on the lid body 28 side.

As shown in FIG. 5B, the support member 30 has a rectangular shape in plan view. The support member 30 has a plurality of circular cross-sectional holes 31 through which NH ₃ passes. The support member 30 is made of, for example, a punching metal that is a plate-like metal material that has been punched. The support member 30 is formed of a metal material (for example, nickel or stainless steel) having corrosion resistance against NH ₃ . Note that only the surface of the support member 30 may be protected with a metal material having corrosion resistance to NH ₃ . The thickness of the support member 30 is, for example, about 1.0 mm. The length dimension of each support member 30 is equal to the length dimension of the lid body 28. The holes 31 may be regularly arranged or randomly arranged. Further, the shape of the hole 31 may be an angular cross section.

  In the chemical heat storage device 10 as described above, immediately after the engine 3 is started, the on-off valve 20 is open. Therefore, the engine oil flows through the oil passage portion 22 of the reactor 11 and the exhaust gas flows through the exhaust gas passage portion 23 of the reactor 11.

In such a state, when the valve 14 is opened, NH ₃ is desorbed from the adsorbent 25 of the adsorber 12 due to a pressure difference between the adsorber 12 and the reaction unit 21, and the NH ₃ reacts through the supply pipe 13. Supplied to the unit 21. Then, NH ₃ passes through the hole 31 and the filter 29 of the support member 30 and reaches the reaction material 24, and the reaction material 24 and NH ₃ chemically react (chemical adsorption) to generate heat. That is, a reaction from the left side to the right side (exothermic reaction) in the following reaction formula (A) occurs.
Reactive material + NH ₃ ⇔ Reactive material (NH ₃ ) + Heat (A)

  Then, the heat generated from the reaction material 24 is transmitted to the engine oil flowing through the oil passage portion 22, and the engine oil is heated. The warmed engine oil is sent into the engine 3 through the oil pipe 16.

When the temperature of the exhaust gas rises, the heat of the exhaust gas flowing through the exhaust gas passage portion 23 is given to the reaction material 24 of the reaction unit 21, whereby NH ₃ is desorbed from the reaction material 24. That is, a reaction (regeneration reaction) from the right side to the left side in the above reaction formula (A) occurs. Then, due to the pressure difference between the reaction unit 21 and the adsorber 12, NH ₃ passes through the filter 29 and the hole 31 of the support member 30 and then returns to the adsorber 12 through the supply pipe 13. 25 is physically adsorbed. As a result, NH ₃ is recovered in the adsorber 12.

In such a chemical heat storage device 10, since the filter 29 is disposed between the reaction material 24 and the lid 28 in the housing portion 32, the reaction material 24 in the housing portion 32 is caused by vibration of the reactor 11 or the like. Even if chipping occurs, fragments (including particles and powder) of the reaction material 24 are collected by the filter 29. Therefore, since the fragments of the reaction material 24 are less likely to flow out to the supply pipe 13 during the recovery of NH ₃ , the fragments of the reaction material 24 are suppressed from flowing into the valve 14. Thereby, failure of the valve 14 due to inflow of fragments of the reaction material 24 can be prevented.

  In addition, since the filter 29 is disposed in the storage portion 32, the reaction material 24 is held in the storage portion 32 even if the reaction material 24 in the storage portion 32 is chipped. Therefore, since the decrease of the reaction material 24 in the accommodating part 32 is suppressed, the fall of the emitted-heat amount in the reactor 11 can be suppressed.

By the way, during the exothermic reaction, NH ₃ is chemically adsorbed on the reaction material 24, so that the reaction material 24 expands as shown in FIG. Then, since the filter 29 is deformed into a bow shape or the like, the collection performance of the reaction material 24 by the filter 29 is lowered. Further, when the reaction material 24 expands, as shown in FIG. 6B, a pressure is applied to the filter 29, and a part of the reaction material 24 is pushed out of the filter 29 by the pressure. As a result, a part of the reaction material 24 flows out to the supply pipe 13.

On the other hand, in the present embodiment, a support member that has a plurality of holes 31 through which NH ₃ passes on the opposite side of the reaction material 24 with respect to the filter 29 in the accommodating portion 32 of the reaction portion 21 and suppresses deformation of the filter 29. 30 is arranged. For this reason, as shown in FIG. 7, even if the reaction material 24 expands, the support member 30 suppresses deformation of the filter 29. Thus, the deformation of the filter 29 due to the expansion of the reaction material 24 can be prevented. Thereby, it becomes possible to ensure the collection performance of the reaction material 24 by the filter 29.

  Further, as shown in FIG. 7, even if a part of the reaction material 24 is pushed out of the filter 29 due to the expansion of the reaction material 24, a part of the reaction material 24 is accumulated in the hole 31 of the support member 30. It becomes like this. Accordingly, the reaction material 24 pushed out by the expansion of the reaction material 24 is less likely to flow out to the supply pipe 13.

  Further, in the present embodiment, a plurality of filters 29 are disposed in a stacked state via the support member 30 between the reaction material 24 and the lid body 28 in the accommodating portion 32 of the reaction portion 21. Therefore, since the filter 29 has a multilayer structure, when the reaction material 24 in the housing portion 32 is chipped, the performance of collecting fragments of the reaction material 24 by the filter 29 is enhanced. This makes it difficult for the fragments of the reaction material 24 to flow out to the supply pipe 13.

Further, in the present embodiment, the plurality of filters 29 have different eye roughness and are arranged so that the eyes become finer from the reaction material 24 side toward the lid body 28 side. For this reason, clogging of the filter 29 arranged on the reaction material 24 side is suppressed. Accordingly, NH ₃ tends to flow between the reaction material 24 and the supply pipe 13.

  In the present embodiment, the filter 29 and the partial region of the support member 30 are sandwiched between the end of the partition wall 27 on the lid 28 side and the lid 28. For this reason, the deformation of the filter 29 due to the expansion of the reaction material 24 can be further prevented.

  In the present embodiment, a plurality of support members 30 are arranged between the reaction material 24 and the lid body 28 in the accommodating portion 32 of the reaction portion 21, but the number of support members 30 is one. There may be.

  FIG. 8 is a cross-sectional view showing a modification of the reactor 11 shown in FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8 and 9, the reactor 11 of this modification includes a partition wall 35 instead of the partition wall 27 described above.

  As shown in FIG. 10, a stepped portion 36 having a stepped surface 36 a is provided at the end of the partition wall 35 on the lid 28 side. For this reason, the space in the partition wall 35 in which the filter 29 and the support member 30 are accommodated is wider than the space in the partition wall 35 in which the reaction material 24 is accommodated by the step surface 36a. Specifically, the thickness of the end of the partition wall 35 on the lid body 28 side is smaller than the thickness of the other part of the partition wall 35. The lid body 28 is fixed to the step portion 36 of the partition wall 35. The step surfaces 36 a located at the upper end and the lower end of the reactor 11 are provided in a region that partitions the exhaust gas passage 23 in the partition wall 35.

  The filter 29 and the support member 30 have a length dimension that covers the entire surface of the reaction material 24 on the lid 28 side and covers the step surface 36a. A partial region of each filter 29 and each support member 30 is sandwiched between the end of the partition wall 35 on the lid 28 side and the lid 28. At this time, the outer edge portion 29 b of each filter 29 and the outer edge portion 30 b of each support member 30 are sandwiched between the step surface 36 a of the step portion 36 and the inner wall surface 28 a of the lid body 28. Accordingly, the outer edge portion 29b of each filter 29 and the outer edge portion 30b of each support member 30 are the end portion on the lid body 28 side and the lid body 28 in the region defining the exhaust gas passage portion 23 located at both the upper and lower ends of the partition wall 35. And is sandwiched between.

  In the present embodiment, the outer edge portion 29 b of each filter 29 and the outer edge portion 30 b of each support member 30 are sandwiched between the step surface 36 a of the step portion 36 and the lid body 28. For this reason, when the reaction material 24 in the accommodating portion 32 of the reaction portion 21 is chipped, fragments of the reaction material 24 pass between the outer edge 29a of the filter 29 and the outer edge 30a of the support member 30 and the partition wall 35. As a result, it is difficult for the liquid to flow out to the supply pipe 13. Thereby, the fragments of the reaction material 24 are more difficult to flow out to the supply pipe 13.

  Note that an O-ring may be interposed between the outer edges 29 a of the plurality of filters 29 and the outer edges 30 a of the plurality of support members 30 and the partition wall 35. In this case, the fragments of the reaction material 24 are more unlikely to flow out to the supply pipe 13 through the outer edge 29a of the filter 29 and between the outer edge 30a of the support member 30 and the partition wall 35.

  FIG. 11 is an enlarged cross-sectional view showing a modification of the reactor 11 shown in FIG. In FIG. 11, the reaction section 21 of the reactor 11 of this modification has a storage section 32. Filters 40 and 41 and support members 42 and 43 are arranged in a stacked state between the reaction material 24 and the lid 28 in the housing portion 32.

  The filter 40 is disposed adjacent to the reaction material 24. The filter 41 is disposed closer to the lid body 28 than the filter 40. The support member 42 is disposed between the filters 40 and 41. That is, the support member 42 is disposed on the opposite side of the reaction material 24 with respect to the filter 40 in the housing portion 32. The support member 43 is disposed between the filter 41 and the lid body 28. That is, the support member 43 is disposed on the opposite side of the reaction material 24 with respect to the filter 41 in the housing portion 32.

The filters 40 and 41 have a mesh structure similar to the filter 29 described above. The eyes of the filter 41 are finer than the eyes of the filter 40. The support members 42 and 43 are made of punched metal, like the support member 30 described above. The support member 42 has a plurality of holes 44 through which NH ₃ passes, and the support member 43 has a plurality of holes 45 through which NH ₃ passes.

  A stepped portion 46 having a plurality of (three in this case) stepped surfaces 46 a is provided at the end of the partition wall 35 on the lid 28 side. That is, the stepped portion 46 has a multistage shape. The space in the partition wall 35 in which the filter 40 and the support member 42 are accommodated is wider than the space in the partition wall 35 in which the reaction material 24 is accommodated by the step surface 46a. The space in the partition wall 35 in which the filter 41 and the support member 43 are accommodated is wider than the space in the partition wall 35 in which the filter 40 and the support member 42 are accommodated by the step surface 46a.

  The filters 40 and 41 and the support members 42 and 43 are arranged for each step of the step portion 46. Specifically, the filter 40 and the support member 42 are disposed on the upper stage side of the stepped portion 46, and the filter 41 and the support member 43 are disposed on the lower stage side of the stepped portion 46. The filter 40 and the support member 42 have the same length, and the filter 41 and the support member 43 have the same length. The length dimension of the filter 41 and the support member 43 is larger than the length dimension of the filter 40 and the support member 42. The filter 40 has a length dimension that covers the entire surface of the reaction material 24 on the lid 28 side and covers the step surface 46a. The filter 41 has a length dimension that covers the entire surface of the support member 42 on the lid 28 side and covers the step surface 46a.

  In this modification, the outer edge portions 40 b and 41 b of the filters 40 and 41 and the outer edge portions 42 b and 43 b of the support members 42 and 43 are sandwiched between the plurality of step surfaces 46 a of the step portion 46 and the lid body 28. Become. Accordingly, when the reaction material 24 in the accommodating portion 32 of the reaction portion 21 is chipped, the fragments of the reaction material 24 are separated from the outer edges 40a and 41a of the filters 40 and 41 and the outer edges 42a and 43a of the support members 42 and 43. It is less likely to flow through the wall 35 and outflow into the supply pipe 13.

  In this modified example, the filters 40 and 41 and the support members 42 and 43 are arranged for each step of the stepped portion 46. However, the present invention is not limited to this, and a plurality of filters and support members are provided for each step of the stepped portion. What is necessary is just to be arrange | positioned alternately.

  FIG. 12 is a cross-sectional view showing a modification of the reactor 11 shown in FIG. In FIG. 12, the reactor 11 of the present modification includes a lid 50 instead of the lid 28 described above. The lid 50 has a main body 50a that constitutes a wall portion to which one end of the supply pipe 13 is fixed, and an annular protrusion 50b that projects from the edge of the main body 50a. The lid body 50 is fixed to the step portion 36 of the partition wall 35.

The filters 29 and the support members 30 are alternately stacked in a plurality (two here). The outer edge portion 29 b of the filter 29 and the outer edge portion 30 b of the support member 30 are sandwiched between the step surface 36 a (see FIG. 10) of the step portion 36 and the distal end surface 50 c of the annular protrusion 50 b of the lid 50. A space S in which NH ₃ supplied from the supply pipe 13 is diffused in the accommodating portion 32 is provided between the support member 30 and the main body portion 50 a of the lid body 50. The space S is partitioned from the surface of the support member 30 on the lid body 50 side and the inner wall surface of the lid body 50. The number of filters 29 and support members 30 may be one each.

In the present modification, since the space S is provided between the support member 30 and the lid 50, NH ₃ supplied into the storage unit 3226 of the reaction unit 21 is diffused toward the reaction material 24. It becomes like this. Accordingly, since the chemical reaction between NH ₃ and the reaction material 24 proceeds uniformly, the reaction material 24 easily generates heat.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the plurality of filters are arranged so that the roughness of the eyes is different and the eyes become finer from the reaction material 24 side toward the lid body side. Instead, the mesh of each filter may be the same.

  In the above embodiment, the casing 26 of the reactor 11 has a rectangular parallelepiped shape, but the shape of the casing 26 is not particularly limited to a rectangular parallelepiped shape, and may be a substantially rectangular parallelepiped shape or a cylindrical shape. May be.

  Furthermore, in the said embodiment, although the filter and the support member are clamped by the edge part by the side of the cover body of the area | region which divides the oil passage part 22 and the exhaust gas passage part 23 in a partition wall, and the cover body, especially the form However, the filter and the support member may not be sandwiched between the partition wall and the lid.

In the above embodiment, the reaction medium NH ₃ and the reaction material 24 represented by the composition formula MaXz are chemically reacted to generate heat. However, the reaction medium is not particularly limited to NH _3. CO ₂ or H ₂ O may be used. When CO ₂ is used as the reaction medium, the reactants to be chemically reacted with CO ₂ include MgO, CaO, BaO, Ca (OH) ₂ , Mg (OH) ₂ , Fe (OH) ₂ , and Fe (OH) _3. FeO, Fe ₂ O _3, Fe ₃ O ₄ or the like is used. When H ₂ O is used as the reaction medium, CaO, MnO, CuO, Al ₂ O ₃ or the like is used as a reaction material that chemically reacts with H ₂ O.

Further, in the above embodiment, the regeneration reaction for desorbing NH ₃ from the reaction material 24 is performed using the heat of the exhaust gas. However, the present invention is not limited to this mode, and the heat of the engine oil is used. Then, a regeneration reaction may be performed. In this case, the reaction unit 21 and the oil passage unit 22 may be alternately stacked as a reactor. Further, if it is possible to perform heat exchange between the reaction material 24 and the engine oil, the reaction portion 21 and the oil passage portion 22 do not have to have a laminated structure. For example, a reactor is provided around the oil passage portion. You may arrange.

  Moreover, in the said embodiment, although the reactor 11 is connected between the engine 3 and the oil pump 9 in the oil circulation line 7, it is not restricted to the form in particular, For example, the engine 3 in the oil circulation line 7 The reactor 11 may be connected between the oil pan 8 and the oil pan 8, or the reactor 11 may be connected between the oil pan 8 and the oil pump 9 in the oil circulation line 7.

  Moreover, in the said embodiment, although the reactor 11 is connected to the bypass line 6, it is not restricted to the form in particular, The reactor 11 may be arrange | positioned by the exhaust pipe 4. FIG.

  Furthermore, although the chemical heat storage device 10 of the above embodiment heats the engine oil, the heating target is not particularly limited to the engine oil, and may be, for example, exhaust gas, water, air, or the like.

  DESCRIPTION OF SYMBOLS 10 ... Chemical thermal storage apparatus, 11 ... Reactor, 12 ... Adsorber (storage device), 13 ... Supply pipe, 24 ... Reactant, 27 ... Partition wall, 28 ... Lid (wall part), 29 ... Filter, 29b ... Outer edge portion, 30 ... support member, 30b ... outer edge portion, 31 ... hole portion, 35 ... partition wall, 36 ... stepped portion, 36a ... stepped surface, 40 ... filter, 40b ... outer edge portion, 41 ... filter, 41b ... outer edge portion 42 ... Outer edge part, 43 ... Outer edge part, 43b ... Outer edge part, 44, 45 ... Hole part, 46 ... Step part, 46a ... Step surface, 50 ... Lid (wall part), S ... Space .

Claims (8)

A reactor having an accommodating portion for accommodating a reaction material that generates heat and desorbs due to heat by a chemical reaction with the reaction medium;
A reservoir for storing the reaction medium;
A supply pipe that connects the reactor and the reservoir and forms a flow path through which the reaction medium flows;
The reactor has a wall portion to which one end of the supply pipe is fixed,
A filter for collecting the reaction material is disposed between the reaction material and the wall in the housing portion,
A chemical heat storage, wherein a support member that has a plurality of holes through which the reaction medium passes and that suppresses deformation of the filter is disposed on the opposite side of the reaction material with respect to the filter in the housing portion. apparatus.   2. The chemical heat storage device according to claim 1, wherein a plurality of the filters are arranged in a stacked state via the support member between the reaction material and the wall portion in the housing portion.   3. The chemistry according to claim 2, wherein the plurality of filters have different eye roughnesses and are arranged so that the eyes become finer from the reaction material side toward the wall side. Thermal storage device. The reactor has a partition wall that partitions the storage portion together with the wall portion,
The wall is fixed to the partition wall;
The partial area | region of the said filter and the said supporting member is clamped by the edge part by the side of the said wall part of the said partition wall, and the said wall part, The Claim 1 characterized by the above-mentioned. Chemical heat storage device.   5. The chemical heat storage device according to claim 4, wherein outer edges of the filter and the support member are sandwiched between an end of the partition wall on the wall side and the wall. A step portion having a step surface is provided at an end of the partition wall on the wall portion side,
The chemical heat storage device according to claim 5, wherein outer edges of the filter and the support member are sandwiched between the step surface and the wall. The step portion has a multi-stage shape having a plurality of the step surfaces,
The chemical heat storage device according to claim 6, wherein a plurality of the filters and the support members are alternately arranged for each step of the stepped portion.   The chemical heat storage device according to any one of claims 1 to 7, wherein a space is provided between the support member and the wall portion.

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