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As a heat storage unit wherein, the volume variation of a heat storage material can be absorbed without an accompanying decrease in heat capacity, decrease in heat transfer coefficient, and oxidation and deterioration of the heat storage material due to oxygen in the air, so that the heat storage ca

As a heat storage unit wherein, the volume variation of a heat storage material can be absorbed without an accompanying decrease in heat capacity, decrease in heat transfer coefficient, and oxidation and deterioration of the heat storage material due to oxygen in the air, so that the heat storage capacity can be adequately maintained and high performance can be attained, and moreover, the number of parts and the cost can be reduced, there is provided on the outside of a main member having; a fluid passage formation section which forms a fluid passage for circulating a fluid introduced from an inlet, on the inside of an outer wall section, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material for which the volume varies corresponding to the heat storage condition, adjacent to the fluid passage, a passage switching section which selectively switches a flow-in destination of a fluid introduced from the inlet by the position of a travelling member which travels due to the volume variation of the heat storage material, to the fluid passage or to a bypass passage which bypasses the fluid passage to discharge the fluid.

대표청구항 ▼

The invention claimed is: 1. A heat storage unit comprising: a main member provided with: a housing provided with openings at front and rear ends in the axial direction with identical cross-sections perpendicular to the axis; a plurality of wall sections within the housing, the wall sections includ

The invention claimed is: 1. A heat storage unit comprising: a main member provided with: a housing provided with openings at front and rear ends in the axial direction with identical cross-sections perpendicular to the axis; a plurality of wall sections within the housing, the wall sections including a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid, on the inside of said housing, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material, adjacent to said fluid passage on the inside of said housing; a plurality of reinforcing sections which extend inwardly from an interior surface of the housing into engagement with one of the wall sections; and a pair of lid members arranged at the front and rear ends of said main member, wherein said housing of said main member, said fluid passage formation section, and said heat storage material filling space formation section are integrally formed. 2. A heat storage unit according to claim 1, wherein said fluid passage formation section and said heat storage material filling space formation section are in a shape for wrapping around the axis. 3. A heat storage unit according to claim 2, wherein, in said fluid passage formation section, a communication port which communicates with either one of an inlet for introducing a fluid, and an outlet for discharging a fluid, formed in said lid member, is formed in an inner end, and a communication port which communicates with the other one of said inlet and said outlet is formed in the outer end. 4. A heat storage unit comprising: a main member provided with: a housing provided with openings at front and rear ends in the axial direction with identical cross-sections perpendicular to the axis, a heat insulating space formation section which forms a heat insulating space where a heat insulator for preventing radiation of heat is arranged, or which is to be a space, on the inside of said housing, a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid, on the inside of said heat insulating space, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material, adjacent to said fluid passage, on the inside of said heat insulating space; and a pair of lid members arranged at the front and rear ends of said main member, wherein, said housing of said main member, said heat insulating space formation section, said fluid passage formation section, and said heat storage material filling space formation section are integrally formed. 5. A heat storage unit according to claim 4, wherein said fluid passage formation section and said heat storage material filling space formation section are in a shape for wrapping around the axis. 6. A manufacturing method for a heat storage unit comprising a main member comprising a housing provided with openings at front and rear ends in the axial direction with identical cross-sections perpendicular to the axis; a plurality of wall sections within the housing, the wall sections including a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid, on the inside of said housing, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material, adjacent to said fluid passage, on the inside of said housing, a pair of lid members arranged at the front and rear ends of said main member, and a plurality of reinforcing sections which extend inwardly from an interior surface of the housing into engagement with one of the wall sections, the manufacturing method comprising the step of: integrally forming said housing of said main member, said fluid passage formation section, said heat storage material filling space formation section, and said reinforcing sections. 7. A manufacturing method for a heat storage unit according to claim 6, wherein said fluid passage formation section and said heat storage material filling space formation section are formed in a shape for wrapping round the axis. 8. A manufacturing method for a heat storage unit according to claim 7, wherein the communication port which communicates with either one of an inlet for introducing a fluid, and an outlet for discharging a fluid, formed in said lid member, is formed in an inner end of said fluid passage formation section, and a communication port which communicates with the other one of said inlet and said outlet is formed in an outer end of said fluid passage formation section. 9. A manufacturing method for a heat storage unit comprising a main member comprising a housing provided with openings at front and rear ends in the axial direction with identical cross-sections perpendicular to the axis, a heat insulating space formation section which forms a heat insulating space where a heat insulator for preventing radiation of heat is arranged, or which is to be a space, on the inside of said housing, a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid, on the inside of said heat insulating space, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material, adjacent to said fluid passage, on the inside of said heat insulating space; and a pair of lid members arranged at the front and rear ends of said main member, the method comprising the step of: integrally forming said housing of said main member, said heat insulating space formation section, said fluid passage formation section, and said heat storage material filling space formation section. 10. A manufacturing method for a heat storage unit according to claim 9, wherein said fluid passage formation section and said heat storage material filling space formation section are formed in a shape for wrapping around the axis. 11. A heat storage unit comprising a pair of main members, wherein bottomed cylindrical housing sections provided with openings at one end, fluid passage formation sections, which form fluid passages for circulating a heat containing fluid, on the inside of said housing sections, and heat storage material filling space formation sections which form heat storage material filling spaces for filling with a heat storage material, adjacent to said fluid passages, on the inside of said housing sections, are integrally formed, and these pair of main members comprise the opening sides of said housing sections mutually opposed. 12. A heat storage unit according to claim 11, wherein, in said main members, heat insulating space formation sections which form heat insulating spaces where heat insulators for preventing radiation of heat are arranged, or which are to be spaces, between said housing sections, said fluid passage formation sections and said heat storage material filling space formation sections, are further integrally formed. 13. A heat storage unit according to claim 11, wherein, in said main members, fluid inlets with axes arranged on the opening sides of said housing sections and which form a fluid introducing opening which communicates with one of said fluid passages, and fluid outlets with axes arranged on the opening sides of said housing sections and which form a fluid outlet opening which communicates with the other of said fluid passages, are further integrally formed. 14. A heat storage unit according to claim 11, wherein, in said main members, at the bottom sections of said housing sections, heat storage material circulation port sections which form heat storage material circulation openings which communicate with said heat storage material filling spaces, are further integrally formed. 15. A heat storage unit according to claim 11, wherein said main member is left-right symmetrically shaped. 16. A heat storage unit according to claim 11, wherein, between said pair of main members, a separator which separates between both of these main members is provided. 17. A heat storage unit according to claim 16, wherein, in said separator, a communication hole which communicates between said heat storage material filling spaces of said pair of main members is formed. 18. A heat storage unit according to claim 16, wherein said fluid passages are double spiral shaped communicating with each other at the center. 19. A heat storage unit according to claim 16, wherein said heat storage material filling spaces are double in the spiral shape. 20. A heat storage unit according to claim 11, wherein said pair of main members are identically shaped. 21. A heat storage unit comprising a main member, wherein a bottomed cylindrical housing section provided with an opening at one end; a plurality of wall sections within the housing, the wall sections including a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid, on the inside of said housing section, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material, adjacent to said fluid passage, on the inside of said housing section, are integrally formed, a plurality of reinforcing sections which extend inwardly from an interior surface of the housing into engagement with one of the wall sections, and a lid member opposes the opening side of said housing section. 22. A heat storage unit according to claim 21, wherein in said main member, a heat insulating space formation section which forms a heat insulating space where a heat insulator for preventing radiation of heat is arranged or which is to be a space, between said housing section, said fluid passage formation section and said heat storage material filling space formation section, is further integrally formed. 23. A heat storage unit according to claim 21, characterized in that in said main member, a fluid inlet with an axis arranged on the opening side of said housing section and which forms a fluid introducing opening which communicates with one of said fluid passages, and a fluid outlet with an axis arranged the opening side of said housing section and which forms a fluid outlet opening which communicates with the other of said fluid passages, are further integrally formed, and in said lid member, cover sections are respectively provided corresponding to the fluid inlet and the fluid outlet of said main member. 24. A heat storage unit according to claim 21, characterized in that in said lid member, a heat storage material circulation port section which forms a heat storage material circulation opening which communicates with said heat storage material filling space, is integrally formed. 25. A heat storage unit according to claim 21, characterized in that said fluid passage is a double spiral shape communicating with each other at the center. 26. A heat storage unit according to claim 21, characterized in that said heat storage material filling space is a double spiral shape. 27. A heat storage unit comprising: two or more main members wherein; a cylindrical outer wall section with both ends open; a plurality of wall sections within the housing, the wall sections including a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid, on the inside of said outer wall section, a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material, adjacent to said fluid passage, on the inside of said outer wall section, are integrally formed, and which are set front to back so that the openings are opposed, and a plurality of reinforcing sections which extend inwardly from an interior surface of the housing into engagement with one of the wall sections, a separator which separates between said main members adjacent to each other, and a lid member which is respectively set on a front side of said main member at a front end and on a rear side of said main member at a rear end. 28. A heat storage unit according to claim 27, is characterized in that in said main members, heat insulating space formation sections which form heat insulating spaces where a heat insulator for preventing radiation of heat is arranged or which are to be spaces, between said outer wall sections, said fluid passage formation sections and said heat storage material filling space formation sections, are further integrally formed. 29. A heat storage unit according to claim 27, characterized in that in said lid member, a fluid circulation port section which forms a fluid circulation opening which communicates with said fluid passage, is integrally formed. 30. A heat storage unit according to claim 27, characterized in that in said lid member, a heat storage material filling port section which forms a heat storage material filling opening which communicates with said heat storage material filling space, is integrally formed. 31. A heat storage unit according to claim 27, characterized in that in said separator, a fluid passage communication hole which communicates between said fluid passages of said main members adjacent to each other, is formed. 32. A heat storage unit according to claim 27, characterized in that in said separator, a heat storage material filling space communication hole which communicates between said heat storage material filling spaces of said main members adjacent to each other, is formed. 33. A heat storage unit according to claim 27, characterized in that said at least two main members are identically-shaped. 34. A heat storage unit according to claim 27, characterized in that said fluid passages and said heat storage material filling spaces are respectively single spiral shaped or multiple spiral shaped. 35. A manufacturing method for a heat storage unit according to claim 27, characterized in that said main members are formed by injection molding or extrusion molding, and said at least two main members, said separators and said pair of lid members are joined and integrated. 36. A heat storage unit characterized in having: a heat storage material filling space for filling with a heat storage material for which the volume varies corresponding to the heat storage condition, a fluid passage which circulates a heat containing fluid introduced from an inlet along said heat storage material filling space filled with said heat storage material, a bypass passage which bypasses said fluid passage to discharge said fluid introduced from said inlet, and a passage switching section having a travelling member which travels due to the volume variation of said heat storage material inside said heat storage material filling space by being arranged so that a part faces to said heat storage material filling space, and which selectively switches the flow-in destination of said fluid introduced from said inlet by the position of said travelling member, to said fluid passage or to said bypass passage. 37. A heat storage unit according to claim 36, is characterized in that said heat storage material is one which if it stores heat and melts, the volume is increased, while if it releases heat and solidifies, the volume is decreased, and said passage switching section selects the flow-in destination of said fluid introduced from said inlet, to said fluid passage, in a condition where at least a part of said heat storage material is solidified, and selects the flow-in destination of said fluid introduced from said inlet, to said bypass passage, in a condition where said heat storage material is completely melted. 38. A heat storage unit characterized in having: a main member wherein: a cylindrical outer wall section having openings at both ends, a fluid passage formation section which forms a fluid passage for circulating a heat containing fluid introduced from an inlet, on the inside of said outer wall section, and a heat storage material filling space formation section which forms a heat storage material filling space for filling with a heat storage material for which the volume varies corresponding to the heat storage condition, adjacent to said fluid passage, on the inside of said outer wall section, are integrally formed, and a passage switching section which is provided on the outside of said main member, and which selectively switches the flow-in destination of said fluid introduced from said inlet, according to a position of a travelling member which travels due to the volume variation of said heat storage material, to said fluid passage or to a bypass passage which bypasses said fluid passage to discharge. 39. A heat storage unit according to claim 38, characterized in that said fluid passage and said heat storage material filling space are respectively double or more spiral shaped centered on an axis in a direction linking bath ends of said openings, and said passage switching section is set side by side with said main member in a direction linking both ends of said openings. 40. A heat storage unit according to claim 39, characterized in that said travelling member travels along a direction linking said openings at both ends of said main member. 41. A heat storage unit according to claim 38, characterized in that, said heat storage material is one which if it stores heat and melts, the volume is increased, while if it releases heat and solidifies, the volume is decreased, and said passage switching section selects the flow-in destination of said fluid introduced from said inlet, to said fluid passage, in a condition where at least a part of said heat storage material is solidified, and selects the flow-in destination of said fluid introduced from said inlet, to said bypass passage, in a condition where said heat storage material is completely melted.