WO2016092726A1 - Electric heater for vehicle air conditioning device - Google Patents

Electric heater for vehicle air conditioning device Download PDF

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Publication number
WO2016092726A1
WO2016092726A1 PCT/JP2015/005236 JP2015005236W WO2016092726A1 WO 2016092726 A1 WO2016092726 A1 WO 2016092726A1 JP 2015005236 W JP2015005236 W JP 2015005236W WO 2016092726 A1 WO2016092726 A1 WO 2016092726A1
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WO
WIPO (PCT)
Prior art keywords
frame
portions
rod
electric heater
heating element
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Application number
PCT/JP2015/005236
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French (fr)
Japanese (ja)
Inventor
山本　雄大
孝則 西田
田中　浩二
Original Assignee
株式会社日本クライメイトシステムズ
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Application filed by 株式会社日本クライメイトシステムズ filed Critical 株式会社日本クライメイトシステムズ
Publication of WO2016092726A1 publication Critical patent/WO2016092726A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant

Definitions

  • the present invention relates to a structure of an electric heater provided in a vehicle air conditioner mounted on, for example, an automobile.
  • a vehicle air conditioner is sometimes provided with an electric heater for heating air for air conditioning (see, for example, Patent Document 1).
  • the electric heater includes a PTC element and a heat dissipation fin, and a spring element for compressing the PTC element and the fin in the stacking direction.
  • the PTC element, the fin and the spring element are stacked by a frame-type frame. Held in a state.
  • Patent Document 1 there are provided a plurality of columns that extend from the upper side to the lower side of the frame-type frame and connect the upper side and the lower side.
  • the struts extend straight in the vertical direction and are arranged at equal intervals in the width direction of the frame-type frame. The air is heated by the heat of the PTC element while passing through the fins through the inside of the frame-type frame.
  • the present invention has been made in view of such a point, and an object of the present invention is to reduce air flow resistance while suppressing deformation of the frame frame.
  • a plurality of first sides and second sides are provided on both sides in the stacking direction of the heating elements and fins in the frame-type frame, and the first side and the second side are connected.
  • the interval between the connecting portions is such that the end side is wider than the central side in the longitudinal direction of the first side and the second side.
  • the first invention is A heating element that generates heat by supplying power; Fins disposed in a stacked state on the heating element; A frame-type frame that houses the heating element and the fins and holds them in a laminated state; An urging member for applying an urging force to compress the heating element and the fins held in the frame-type frame in the stacking direction; In the electric heater of the vehicle air conditioner in which the air-conditioning air blown into the frame-type frame is heated through the fins,
  • the frame-type frame includes a first side and a second side located on both sides in the stacking direction of the heating element and the fin, and extends from the first side to the second side, and the first side And a plurality of connecting portions connecting the second side portion, The plurality of connecting portions are arranged at intervals in the longitudinal direction of the first side portion and the second side portion, and an interval between the adjacent connecting portions is set between the first side portion and the second side portion. It is characterized in that the interval between the connecting portions located on the end side is set to be wider than
  • the first side and the second side of the frame-type frame are connected by the plurality of connecting portions, the first side and the second side are resisted against the repulsive force by the biasing member. Opening is suppressed.
  • the bending force applied to the first side portion and the second side portion of the frame-type frame increases as it approaches the central portion in the longitudinal direction, and decreases as it approaches the end portion.
  • the edge part side is wider than the longitudinal direction center part of the 1st side part and the 2nd side part, the bending force concerning a 1st side part and a 2nd side part is adjacent.
  • the connecting portion is dense at the central portion where the bending force is large, and the connecting portion becomes relatively dense at the portion near the end where the bending force is small. Therefore, it is possible to reduce the number of the connecting portions and reduce the air flow resistance while effectively suppressing the deformation of the frame frame by the plurality of connecting portions.
  • the frame-type frame is provided with a cap member that covers end portions in the longitudinal direction of the first side portion and the second side portion, and the cap member has a length of the first side portion and the second side portion. It is characterized by being fitted to the end of the direction.
  • the cap member is fitted to the end portions in the longitudinal direction of the first side portion and the second side portion, so that the opening of the first side portion and the second side portion is also suppressed by the cap member. Is possible.
  • the connecting portion of the frame-type frame is provided on the upstream side and the downstream side, respectively, in the flow direction of the air for air conditioning.
  • the upstream connecting portion extends with an inclination with respect to the first side and the second side,
  • the downstream connecting portion extends so as to incline in the opposite direction to the upstream connecting portion, and is arranged so that at least a portion thereof overlaps with the upstream connecting portion when viewed in the air-conditioning air flow direction. It is characterized by being.
  • the upstream connecting portion and the downstream connecting portion are arranged so as to intersect with each other.
  • the deformation suppressing effect is further improved.
  • the first side and the second side are provided on both sides in the stacking direction of the heating element and the fin in the frame-type frame, and the plurality of connecting portions connecting the first side and the second side are provided. Since the interval is set so that the end side is wider than the longitudinal center part of the first side part and the second side part, air flow resistance can be reduced while suppressing deformation of the frame-type frame. .
  • the cap member is fitted to the longitudinal ends of the first side and the second side of the frame-type frame, the effect of suppressing the deformation of the frame-type frame is further enhanced. be able to.
  • the connecting portions are provided on the upstream side and the downstream side, respectively, in the flow direction of the air-conditioning air, and the downstream connecting portion extends in the direction opposite to the upstream connecting portion and is air-conditioned. Since it is arranged so that at least a part of the upstream connecting portion overlaps when viewed in the air flow direction, the strength of the frame frame can be increased, and the deformation suppression effect of the frame frame can be further improved. Can do.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 2.
  • FIG. 3 is a view corresponding to FIG. 2 according to the second embodiment.
  • FIG. 3 is a diagram corresponding to FIG. 3 according to a second embodiment.
  • FIG. 1 is a diagram showing a schematic configuration of a vehicle air conditioner 1 including an electric heater 5 according to Embodiment 1 of the present invention.
  • the vehicle air conditioner 1 is mounted, for example, inside an instrument panel (not shown) in the interior of an automobile, and can adjust the temperature of the air for air conditioning to be supplied to each part in the interior of the vehicle. .
  • the vehicle air conditioner 1 includes a casing 2, a blower fan 3, a cooling heat exchanger 4, and an electric heater 5.
  • the blower fan 3, the cooling heat exchanger 4, and the electric heater 5 are accommodated in the casing 2.
  • the blower fan 3 is for sending air for air conditioning.
  • the cooling heat exchanger 4 is for cooling the air-conditioning air.
  • the electric heater 5 is disposed downstream of the cooling heat exchanger 4 in the flow direction of the air-conditioning air in the casing 2 and heats the air-conditioning air.
  • An air mix damper 6 is disposed inside the casing 2.
  • the air mix damper 6 is for changing the temperature of the conditioned air by changing the amount of air passing through the electric heater 5.
  • a defroster damper 7, a vent damper 8 and a heat damper 9 are also arranged inside the casing 2.
  • the defroster damper 7 is for changing the amount of the conditioned air blown toward the inner surface of the front window (not shown), and the vent damper 8 changes the amount of the conditioned air blown toward the upper body of the occupant.
  • the heat damper 9 is for changing the amount of conditioned air blown out toward the vicinity of the passenger's feet.
  • the electric heater 5 includes an upper heating element 50, a central heating element 51, a lower heating element 52, a plurality of fins 53, a spring (biasing member) 54, and a frame type.
  • the frame 60 has a rectangular shape that is long in the left-right direction as a whole when viewed from the flow direction of the air-conditioning air.
  • the upper heating element 50, the central heating element 51, and the lower heating element 52 are provided with a plurality of PTC elements (not shown) that generate heat by supplying power from a battery or the like (not shown) mounted on the vehicle. It has the same structure and has a long plate shape in the left-right direction. Inside each of the upper heating element 50, the central heating element 51, and the lower heating element 52, a plurality of PTC elements are arranged in the left-right direction.
  • the upper heating element 50 is disposed above the central portion in the vertical direction of the electric heater 5. As shown in FIG. 3, an electrode plate 50a connected to the PTC element is provided at the right end portion of the upper heating element 50 so as to protrude to the right side.
  • the central heating element 51 is disposed at the center in the vertical direction of the electric heater 5.
  • An electrode plate 51a connected to the PTC element is provided at the right end portion of the central heating element 51 so as to protrude to the right side.
  • the lower heating element 52 is disposed below the central portion in the vertical direction of the electric heater 5.
  • An electrode plate 52a connected to the PTC element is provided at the right end portion of the lower heating element 52 so as to protrude to the right side.
  • the fin 53 is a corrugated fin having a continuous wave shape that is long in the left-right direction.
  • the fins 53 are disposed on the upper and lower surfaces of the upper heating element 50, the upper and lower surfaces of the central heating element 51, and the upper and lower surfaces of the lower heating element 52, respectively. That is, the fins 53 are stacked on the upper heating element 50, the central heating element 51, and the lower heating element 52.
  • a plate material 55 extending in the left-right direction is disposed between the two fins 53, 53 disposed between the upper heating element 50 and the central heating element 51.
  • the fins 53 are in contact with the upper surface and the lower surface of the plate material 55, respectively.
  • a similar plate material 55 is also disposed between two fins 53, 53 disposed between the central heating element 51 and the lower heating element 52.
  • the spring 54 is disposed on the upper surface of the fin 53 located at the upper end of the electric heater 5.
  • the spring 54 is for applying an urging force so as to compress the heating elements 50 to 52 and the fins 53 held in the frame-type frame 60 in the stacking direction.
  • the spring 54 includes a board part 54 a extending in the left-right direction along the upper surface of the fin 53, and an elastic deformation part 54 b extending from an edge of the board part 54 a on the downstream side in the flow direction of air-conditioning air.
  • Provided, and the whole is made of an elastic metal material.
  • the elastic deformation portion 54b extends upward from the substrate portion 54a and extends upstream in the flow direction of the air-conditioning air, and then has a distal end bent and extended downward. This elastic deformation part 54b is elastically deformed downward.
  • the frame frame 60 includes an upstream member 70 disposed on the upstream side in the air-conditioning air flow direction and a downstream member 80 disposed on the downstream side.
  • the side member 70 and the downstream side member 80 are combined.
  • the upstream member 70 includes an upper side portion (first side portion) 71 and a lower side portion (second side portion) 72 that are located on both sides in the stacking direction of the heating elements 50 to 52 and the fins 53, and the upper side portion 71 to the lower side portion 72.
  • the upper side portion 71, the lower side portion 72, and the rod-like portions 73, 74A to 74C, and 75A to 75C are integrally formed of a resin material.
  • the upper side 71 extends in the left-right direction. As shown in FIG. 4, the elastic deformation portion 54 b of the spring 54 is in contact with the lower surface of the upper side portion 71. As shown in FIG. 3, projections 71 a are provided at the right end and the left end of the upper side 71 so as to protrude upstream in the flow direction of the air-conditioning air. In addition, a vertical plate portion 71b that protrudes downward is provided at the right end portion and the left end portion of the upper side portion 71, respectively. A fin 53 at the upper end is arranged between the left and right vertical plate portions 71b and 71b. Further, the upper side 71 is provided with an engaging claw (not shown) that protrudes downstream.
  • the lower side 72 is substantially parallel to the upper side 71.
  • the lower surface of the fin 53 at the lower end is in contact with the upper surface of the lower side portion 72.
  • protrusions 72a On the right end and the left end of the lower side 72, there are provided protrusions 72a that protrude upstream in the air-conditioning air flow direction.
  • a vertical plate portion 72b that protrudes upward is provided at the right end portion and the left end portion of the lower side portion 72, respectively.
  • a fin 53 at the lower end is arranged between the left and right vertical plate portions 72b, 72b.
  • a notch 72 c is formed on the lower surface of the lower side 72.
  • the upper side portion 71 and the lower side portion 72 are connected to each other by rod-like portions 73, 74A to 74C, and 75A to 75C, so that the interval is kept constant.
  • the heating elements 50 to 52, the fins 53, the springs 54, and the plate material 55 are accommodated between the upper side 71 and the lower side 72 and compressed in the stacking direction.
  • the rod-shaped portions 73, 74A to 74C, and 75A to 75C are arranged at intervals in the longitudinal direction of the upper side portion 71 and the lower side portion 72. That is, the central rod-shaped portion 73 is disposed at the center in the width direction (left-right direction) of the upstream member 70.
  • a first right rod portion 74A is disposed on the right side of the central rod portion 73 of the upstream member 70, and a second right rod portion 74B is disposed on the right side of the first right rod portion 74A.
  • a third right rod portion 74C is disposed on the right side of the right rod portion 74B.
  • a first left bar 75A is disposed on the left side of the central bar 73 of the upstream member 70, and a second left bar 75B is disposed on the left of the first left bar 75A.
  • a third left bar-like part 75C is arranged on the left side of the second left bar-like part 75B.
  • the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C are upstream of the heating elements 50 to 52, the fins 53, and the springs 54 in the air-conditioning air flow direction. Arranged on the side.
  • the heating elements 50 to 52, the fins 53, and the spring 54 are supported from the upstream side by the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C.
  • the central rod-shaped portion 73 extends perpendicular to the upper side portion 71 and the lower side portion 72. Further, the first to third right side rod-like portions 74A to 74C and the first to third left side rod-like portions 75A to 75C are parallel to the central rod-like portion 73.
  • the thickness of the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C is set smaller than the thickness of the upper side portion 71 and the lower side portion 72.
  • the degree to which the rod-like portion 73, the first to third right-side rod-like portions 74A to 74C and the first to third left-side rod-like portions 75A to 75C impede the flow of air for air conditioning is reduced.
  • the center line of the center rod-shaped portion 73 is X1
  • the center line of the first right rod-shaped portion 74A is X2
  • the center line of the second right rod-shaped portion 74B is X3
  • the center line of the third right rod-shaped portion 74C is X3
  • the center line of the first left rod 75A is X5
  • the center line of the second left rod 75B is X6
  • the center line of the third left rod 75C is X7
  • the center line X1 and the center line X2 The separation dimension A1 and the separation dimension A2 between the center line X1 and the center line X5 are set equal
  • the dimension B2 is set equal
  • the separation dimension C1 between the center line X3 and the center line X4 and the separation dimension C2 between the center line X6 and the center line X7 are set equal.
  • the separation dimensions C1 and C2 are set wider than the separation dimensions B1 and B2, and the separation dimensions B1 and B2 are set wider than the separation dimensions A1 and A2. That is, the interval between the adjacent rod-like portions 74B and 74C and the interval between the rod-like portions 75B and 75C are the widest, and the interval between the adjacent rod-like portions 73 and 74A and the interval between the rod-like portions 73 and 75A are the narrowest. And the space
  • the upper side portion 71 and the lower side portion 72 are centered in the longitudinal direction.
  • the interval between the rod-like portions 74B and 74C (75B and 75C) located on the end side of the upper side portion 71 and the lower side portion 72 is larger than the interval between the located rod-like portions 73 and 74A.
  • the downstream member 80 is configured in the same manner as the upstream member 70. That is, an upper side part 81, a lower side part 82, a central bar part 83, first to third right side bar parts 84A to 84C and first to third left side bar parts 85A to 85C are provided. Similar to the upstream member 70, the upper side portion 81 is provided with a vertical plate portion 81 b and the lower side portion 82 is provided with a vertical plate portion 82 b.
  • the upper side 71 of the upstream member 70 and the upper side 81 of the downstream member 80 overlap, and the lower side 72 of the upstream member 70 and the lower side 82 of the downstream member 80 Overlap.
  • the engaging claw provided on the upper side portion 71 of the upstream side member 70 engages with the peripheral edge portion of the notch portion 81 c provided on the upper side portion 81 of the downstream side member 80, and the lower side portion 82 of the downstream side member 80.
  • the engaging claw 82 c provided on the upper side member 70 engages with the peripheral edge portion of the notch portion 72 c provided on the lower side portion 72 of the upstream member 70.
  • the surface on the downstream side in the flow direction of the air-conditioning air in the upper side portion 71 of the upstream member 70 and the upstream surface in the upper side portion 81 of the downstream member 80 are in contact with each other.
  • the surface on the downstream side in the flow direction of the air-conditioning air in the lower side portion 72 of the upstream member 70 and the upstream surface in the lower side portion 82 of the downstream member 80 are in contact with each other.
  • a right cap member 61 that covers the right end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 is provided.
  • the right cap member 61 is detachably attached to the frame type frame 60 by being fitted to the right end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82.
  • On the left side of the right cap member 61 there is provided a fitting cylinder portion 61a that fits in a state in which the right end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 are inserted.
  • An engagement hole 61d for engaging the projections 71a and 72a of the frame-type frame 60 is formed in the peripheral wall portion of the fitting cylinder portion 61a.
  • a flange 61b is formed on the right side of the fitting cylinder portion 61a. Furthermore, an electrode plate insertion cylinder portion 61c is provided on the flange 61b so as to protrude rightward.
  • the electrode plates 50a, 51a, and 52b are disposed inside the electrode plate insertion cylinder portion 61c through the flange 61b while being inserted into the fitting cylinder portion 61a.
  • power supply wiring extending from the vehicle side is connected to the electrode plates 50a, 51a, 52b.
  • a left cap member 62 that covers the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 is provided.
  • the left cap member 62 is detachably attached to the frame frame 60 by being fitted to the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82.
  • the right cap member 61 is provided with a fitting cylinder portion 61a that fits in a state in which the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 are inserted.
  • an engagement hole 62c is formed in which the projections 71a and 72a of the frame-type frame 60 are engaged.
  • the assembly procedure of the electric heater 5 configured as described above will be described.
  • the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate material 55 are stacked and accommodated in the upstream member 70.
  • the spring 54 is inserted between the upper surface of the fin 53 at the upper end portion and the lower surface of the upper side portion 71 while being elastically deformed. Thereby, a compressive force acts on the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate material 55.
  • the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, the plate material 55, and the spring 54 are placed inside the frame frame 60. Be contained.
  • the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate material 55 are stacked and accommodated in the downstream member 80, and then the upstream member 70 is assembled to the downstream member 80. It may be integrated.
  • the repulsive force by the spring 54 acts to open the upper side 71 and the lower side 72 with respect to the upper side 71 and the lower side 72 of the upstream member 70 of the frame frame 60.
  • the repulsive force of the spring 54 acts to open the upper side 81 and the lower side 82 with respect to the upper side 81 and the lower side 82 of the downstream member 80 of the frame-type frame 60.
  • the upper side 71 and the lower side 72 of the upstream member 70 are connected by the plurality of rod-like parts 73, 74A to 74C, 75A to 75C, the upper side 71 and the upper side 71 are resisted against the repulsive force by the spring 54.
  • the opening with the lower side part 72 is suppressed.
  • the opening of the upper side 81 and the lower side 82 of the downstream member 80 is also suppressed.
  • the bending force applied to the upper side portions 71 and 81 and the lower side portions 72 and 82 of the frame-type frame 60 increases as it approaches the central portion in the left-right direction, and decreases as it approaches the end portion.
  • the intervals between the rod-like portions 73, 74A to 74C, 75A to 75C and the intervals between the rod-like portions 83, 84A to 84C and 85A to 85C are the center in the left-right direction of the upper side portions 71 and 81 and the lower side portions 72 and 82.
  • the thing located in the edge part side is wider than the thing located in a part.
  • the rod-like portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, and 85A to 85C become dense at the central portion where the bending force applied to the upper side portions 71 and 81 and the lower side portions 72 and 82 is large.
  • the rod-like portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, and 85A to 85C become relatively dense at the portion near the end where the bending force is small.
  • the rod-like portions 73, 74A to 74C, 75A to 75C, 83A to 75C, 83, 84A to 84C, and 85A to 85C are effectively restrained from deforming the frame frame 60 while being effectively suppressed.
  • the air flow resistance can be reduced.
  • the upper side portions 71 and 81 and the lower side portions 72 and 82 are opened by fitting the right and left cap members 61 and 62 to the right end portion and the left end portion of the upper side portions 71 and 81 and the lower side portions 72 and 82, respectively. It can also be suppressed by the right and left cap members 61 and 62.
  • the number of the rod-like portions of the upstream member 70 and the downstream member 80 is seven. However, the number is not limited to this, and may be six or less, or may be eight or more. . Further, the number of rod-like portions of the upstream member 70 and the downstream member 80 may be the same or different.
  • (Embodiment 2) 5 and 6 show an electric heater 5 according to Embodiment 2 of the present invention.
  • the second embodiment is different from the first embodiment only in the number and shape of the rod-shaped portions of the upstream member 70 and the number and shape of the rod-shaped portions of the downstream member 80, and the other portions are implemented. Since the configuration is the same as that of the first embodiment, the same portions as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are described.
  • first to third right-hand rod portions 74A to 74C and first to third left-hand rod portions 75A to 75C are provided.
  • 74 A of 1st right side bar-shaped parts are inclined and extended with respect to the upper side part 71 and the lower side part 72 so that it may be located on the right side, so that it goes to the upper side.
  • the second right rod-like portion 74B is inclined so as to be positioned on the left side as it goes upward.
  • the third right rod portion 74C is inclined so as to be positioned on the right side as it goes upward.
  • the first left rod-like portion 75A extends with an inclination with respect to the upper side portion 71 and the lower side portion 72 so as to be located on the left side as it goes upward. Further, the second left rod-like portion 75B is inclined so as to be positioned on the right side as it goes upward. Further, the third left rod-like portion 75C is inclined so as to be positioned on the left side as it goes upward.
  • the distance between the upper end of the first right rod 74A and the upper end of the first left rod 75A is Y1, and the distance between the lower end of the first left rod 75A and the lower end of the second left rod 75B is Y1.
  • the dimension is Y2, the distance between the lower end portion of the first right rod portion 74A and the lower end portion of the second right rod portion 74B is Y3, the upper end portion of the second right rod portion 74B, and the upper end of the third right rod portion 74C.
  • the separation dimension Y2 is set to be equal to Y4, and the separation dimension between the upper end part of the second left bar part 75B and the upper end part of the third left bar part 75C is set to Y5.
  • the separation dimension Y4 and the separation dimension Y5 are set equal.
  • the separation dimension Y1 is set to the shortest
  • the separation dimensions Y2 and Y3 are set wider than the separation dimension Y1
  • the separation dimensions Y4 and Y5 are set wider than the separation dimensions Y2 and Y3.
  • first to third right bar portions 84A to 84C and first to third left bar portions 85A to 85C are provided.
  • 84 A of 1st right side rod-shaped parts are inclined and extended with respect to the upper side part 81 and the lower side part 82 so that it may be located on the left side, so that it goes to the upper side.
  • the second right rod-like portion 84B is inclined so as to be positioned on the right side as it goes upward.
  • the third right rod-shaped portion 84C is inclined so as to be positioned on the left side as it goes upward.
  • the first left bar 85A is inclined with respect to the upper side 81 and the lower side 82 so as to be located on the right side as going upward.
  • the second left bar 85B is inclined so as to be positioned on the left side as it goes upward.
  • the third left bar 85C is inclined so as to be positioned on the right side as it goes upward. That is, the first to third right rod portions 84A to 84C on the downstream side and the first to third left rod portions 85A to 85C on the downstream side respectively correspond to the first to third right rod portions 74A to 74C on the upstream side corresponding to the first to third right rod portions 74A to 74C.
  • the first to third left-side bar portions 75A to 75C are inclined in the opposite direction.
  • the upstream intermediate portion of the upstream first right rod-shaped portion 74A and the vertical intermediate portion of the downstream first right rod-shaped portion 84A are arranged to overlap. Further, the intermediate portion in the vertical direction of the second right rod portion 74B on the upstream side and the intermediate portion in the vertical direction of the second right rod portion 84B on the downstream side are arranged so as to overlap each other. Further, the intermediate portion in the vertical direction of the upstream third right rod portion 74C and the intermediate portion in the vertical direction of the downstream third right rod portion 84C are arranged so as to overlap each other.
  • the intermediate portion in the vertical direction of the first left-side rod portion 75A on the upstream side and the intermediate portion in the vertical direction of the first left-side rod portion 85A on the downstream side are overlapped.
  • the intermediate portion in the vertical direction of the second left bar portion 75B on the upstream side and the intermediate portion in the vertical direction of the second left rod portion 85B on the downstream side are arranged so as to overlap each other.
  • the intermediate portion in the vertical direction of the third left bar portion 75C on the upstream side and the intermediate portion in the vertical direction of the third left rod portion 85C on the downstream side are arranged so as to overlap each other.
  • the flow resistance of air can be reduced while suppressing the deformation of the frame frame 60.
  • the first left-side bar portion 75A on the upstream side and the first left-side bar portion 85A on the downstream side intersect in an X shape
  • the second left-side bar portion on the upstream side 75B and the downstream second left bar 85B intersect in an X shape
  • the upstream third left rod 75C and the downstream third left bar 85C intersect in an X shape.
  • the number of the rod-like portions of the upstream side member 70 and the downstream side member 80 is six. However, the number is not limited thereto, and may be five or less, or may be seven or more. . Further, the number of rod-like portions of the upstream member 70 and the downstream member 80 may be the same or different.
  • the electric heater of the vehicle air conditioner according to the present invention can be used, for example, when heating air for air conditioning.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

According to the present invention, an upper side portion 71 and lower side portion 72 are provided on both sides respectively in the lamination direction of heat generation bodies 50-52 and fins 53 in a frame-shaped frame 60, and the spacing between rod-shaped portions 73, 74A-74C, 75A-75B, which link the upper side portion 71 and lower side portion 72, is configured to become wider towards the edges than in a center portion in the length direction of the upper side portion 71 and lower side portion 72.

Description

車両用空調装置の電気式ヒータElectric heater for vehicle air conditioner
　本発明は、例えば自動車等に搭載される車両用空調装置に設けられる電気式ヒータの構造に関するものである。 The present invention relates to a structure of an electric heater provided in a vehicle air conditioner mounted on, for example, an automobile.
　従来より、例えば車両用空調装置には、空調用空気を加熱するための電気式ヒータが設けられることがある（例えば、特許文献１参照）。電気式ヒータは、ＰＴＣ素子と放熱用のフィンとを積層するとともに、ＰＴＣ素子及びフィンを積層方向に圧縮するためのバネ要素を備えており、ＰＴＣ素子、フィン及びバネ要素が枠型フレームによって積層状態で保持されている。 Conventionally, for example, a vehicle air conditioner is sometimes provided with an electric heater for heating air for air conditioning (see, for example, Patent Document 1). The electric heater includes a PTC element and a heat dissipation fin, and a spring element for compressing the PTC element and the fin in the stacking direction. The PTC element, the fin and the spring element are stacked by a frame-type frame. Held in a state.
　特許文献１では、枠型フレームの上辺部から下辺部まで延びて上辺部及び下辺部を連結する複数の支柱が設けられている。支柱は、上下方向に真っ直ぐに延びるとともに、枠型フレームの幅方向に等間隔に配置されている。そして、空気は枠型フレームの内部を通ってフィンを通過する間にＰＴＣ素子の熱によって加熱される。 In Patent Document 1, there are provided a plurality of columns that extend from the upper side to the lower side of the frame-type frame and connect the upper side and the lower side. The struts extend straight in the vertical direction and are arranged at equal intervals in the width direction of the frame-type frame. The air is heated by the heat of the PTC element while passing through the fins through the inside of the frame-type frame.
特許第４９３９４９０号公報Japanese Patent No. 4939490
　ところで、特許文献１のように、ＰＴＣ素子、フィン及びバネ要素を枠型フレームによって積層状態で保持する場合、バネ要素の反発力の作用により枠型フレームの上辺部と下辺部とが開かないように複数の支柱が必要になる。しかしながら、枠型フレームの内部には空調用空気が通るようになっているので、支柱は空調用空気の流れを阻害し、流通抵抗を増加させることになる。このため、支柱の数はできるだけ減らしたいという要求があるが、単純に数を減らしたのでは枠型フレームがバネ要素の反発力によって変形する恐れがある。 By the way, when the PTC element, the fin, and the spring element are held in a stacked state by the frame-type frame as in Patent Document 1, the upper side portion and the lower side portion of the frame-type frame are not opened by the action of the repulsive force of the spring element. Multiple pillars are required. However, since the air-conditioning air passes through the inside of the frame-type frame, the support blocks the flow of the air-conditioning air and increases the flow resistance. For this reason, there is a demand to reduce the number of struts as much as possible, but if the number is simply reduced, the frame-type frame may be deformed by the repulsive force of the spring element.
　本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、枠型フレームの変形を抑制しながら、空気の流通抵抗を減少させることができるようにすることにある。 The present invention has been made in view of such a point, and an object of the present invention is to reduce air flow resistance while suppressing deformation of the frame frame.
　上記目的を達成するために、本発明では、枠型フレームにおける発熱体及びフィンの積層方向両側にそれぞれ第１辺部及び第２辺部を設け、第１辺部及び第２辺部を繋ぐ複数の繋ぎ部の間隔が、第１辺部及び第２辺部の長手方向中央部側よりも端部側が広くなるようにした。 In order to achieve the above object, in the present invention, a plurality of first sides and second sides are provided on both sides in the stacking direction of the heating elements and fins in the frame-type frame, and the first side and the second side are connected. The interval between the connecting portions is such that the end side is wider than the central side in the longitudinal direction of the first side and the second side.
　第１の発明は、
　電力の供給によって発熱する発熱体と、
　上記発熱体に積層された状態で配設されるフィンと、
　上記発熱体及び上記フィンを収容して積層状態で保持する枠型フレームと、
　上記枠型フレームに保持された上記発熱体及び上記フィンを積層方向に圧縮するように付勢力を作用させるための付勢部材とを備え、
　上記枠型フレームの内部へ送風された空調用空気が上記フィンを通過して加熱される車両用空調装置の電気式ヒータにおいて、
　上記枠型フレームは、上記発熱体及び上記フィンの積層方向両側にそれぞれ位置する第１辺部及び第２辺部と、該第１辺部から該第２辺部まで延び、該第１辺部と該第２辺部とを繋ぐ複数の繋ぎ部とを有し、
　複数の上記繋ぎ部は、上記第１辺部及び上記第２辺部の長手方向に間隔をあけて配置され、隣合う上記繋ぎ部の間隔は、上記第１辺部及び上記第２辺部の長手方向中央部に位置する上記繋ぎ部の間隔よりも端部側に位置する上記繋ぎ部の間隔の方が広くなるように設定されていることを特徴とする。 The first invention is
A heating element that generates heat by supplying power;
Fins disposed in a stacked state on the heating element;
A frame-type frame that houses the heating element and the fins and holds them in a laminated state;
An urging member for applying an urging force to compress the heating element and the fins held in the frame-type frame in the stacking direction;
In the electric heater of the vehicle air conditioner in which the air-conditioning air blown into the frame-type frame is heated through the fins,
The frame-type frame includes a first side and a second side located on both sides in the stacking direction of the heating element and the fin, and extends from the first side to the second side, and the first side And a plurality of connecting portions connecting the second side portion,
The plurality of connecting portions are arranged at intervals in the longitudinal direction of the first side portion and the second side portion, and an interval between the adjacent connecting portions is set between the first side portion and the second side portion. It is characterized in that the interval between the connecting portions located on the end side is set to be wider than the interval between the connecting portions located in the central portion in the longitudinal direction.
　この構成によれば、枠型フレームの第１辺部と第２辺部とが複数の繋ぎ部によって繋がれるので、付勢部材による反発力に抗するように第１辺部と第２辺部との開きが抑制される。このとき、枠型フレームの第１辺部及び第２辺部にかかる撓み力は、長手方向中央部に近づくほど大きくなる一方、端部に近づくほど小さくなっている。この発明では、隣合う繋ぎ部の間隔が、第１辺部及び第２辺部の長手方向中央部よりも端部側が広くなっているので、第１辺部及び第２辺部にかかる撓み力が大きい中央部では繋ぎ部が密になり、撓み力が小さい端部寄りの部分では繋ぎ部が比較的密でなくなる。よって、複数の繋ぎ部によって枠型フレームの変形を効果的に抑制しながら、繋ぎ部の数を減らして空気の流通抵抗を減少させることが可能になる。 According to this configuration, since the first side and the second side of the frame-type frame are connected by the plurality of connecting portions, the first side and the second side are resisted against the repulsive force by the biasing member. Opening is suppressed. At this time, the bending force applied to the first side portion and the second side portion of the frame-type frame increases as it approaches the central portion in the longitudinal direction, and decreases as it approaches the end portion. In this invention, since the edge part side is wider than the longitudinal direction center part of the 1st side part and the 2nd side part, the bending force concerning a 1st side part and a 2nd side part is adjacent. The connecting portion is dense at the central portion where the bending force is large, and the connecting portion becomes relatively dense at the portion near the end where the bending force is small. Therefore, it is possible to reduce the number of the connecting portions and reduce the air flow resistance while effectively suppressing the deformation of the frame frame by the plurality of connecting portions.
　第２の発明は、第１の発明において、
　上記枠型フレームには、上記第１辺部及び上記第２辺部の長手方向の端部を覆うキャップ部材が設けられ、該キャップ部材は、上記第１辺部及び上記第２辺部の長手方向の端部に嵌合していることを特徴とする。 According to a second invention, in the first invention,
The frame-type frame is provided with a cap member that covers end portions in the longitudinal direction of the first side portion and the second side portion, and the cap member has a length of the first side portion and the second side portion. It is characterized by being fitted to the end of the direction.
　この構成によれば、キャップ部材を第１辺部及び第２辺部の長手方向の端部に嵌合させることで、第１辺部及び第２辺部の開きをキャップ部材によっても抑制することが可能になる。 According to this configuration, the cap member is fitted to the end portions in the longitudinal direction of the first side portion and the second side portion, so that the opening of the first side portion and the second side portion is also suppressed by the cap member. Is possible.
　第３の発明は、第１の発明において、
　上記枠型フレームの上記繋ぎ部は、空調用空気の流れ方向上流側と下流側にそれぞれ設けられ、
　上流側の上記繋ぎ部は、上記第１辺部及び上記第２辺部に対して傾斜して延び、
　下流側の上記繋ぎ部は、上流側の上記繋ぎ部とは反対方向に傾斜して延びるとともに、空調用空気の流れ方向に見たとき上流側の上記繋ぎ部と少なくとも一部が重なるように配置されていることを特徴とする。 According to a third invention, in the first invention,
The connecting portion of the frame-type frame is provided on the upstream side and the downstream side, respectively, in the flow direction of the air for air conditioning.
The upstream connecting portion extends with an inclination with respect to the first side and the second side,
The downstream connecting portion extends so as to incline in the opposite direction to the upstream connecting portion, and is arranged so that at least a portion thereof overlaps with the upstream connecting portion when viewed in the air-conditioning air flow direction. It is characterized by being.
　この構成によれば、空調用空気の流れ方向に見たとき、上流側の繋ぎ部と下流側の繋ぎ部とが交差するように配置されるので、枠型フレームの強度が高まって枠型フレームの変形抑制効果がより一層向上する。 According to this configuration, when viewed in the air-conditioning air flow direction, the upstream connecting portion and the downstream connecting portion are arranged so as to intersect with each other. The deformation suppressing effect is further improved.
　第１の発明によれば、枠型フレームにおける発熱体及びフィンの積層方向両側にそれぞれ第１辺部及び第２辺部を設け、第１辺部及び第２辺部を繋ぐ複数の繋ぎ部の間隔が、第１辺部及び第２辺部の長手方向中央部よりも端部側が広くなるように設定したので、枠型フレームの変形を抑制しながら、空気の流通抵抗を減少させることができる。 According to the first aspect of the present invention, the first side and the second side are provided on both sides in the stacking direction of the heating element and the fin in the frame-type frame, and the plurality of connecting portions connecting the first side and the second side are provided. Since the interval is set so that the end side is wider than the longitudinal center part of the first side part and the second side part, air flow resistance can be reduced while suppressing deformation of the frame-type frame. .
　第２の発明によれば、枠型フレームの第１辺部及び第２辺部の長手方向の端部にキャップ部材を嵌合させるようにしたので、枠型フレームの変形抑制効果をより一層高めることができる。 According to the second invention, since the cap member is fitted to the longitudinal ends of the first side and the second side of the frame-type frame, the effect of suppressing the deformation of the frame-type frame is further enhanced. be able to.
　第３の発明によれば、空調用空気の流れ方向上流側と下流側にそれぞれ繋ぎ部を設け、下流側の繋ぎ部は、上流側の繋ぎ部とは反対方向に傾斜して延びるとともに、空調用空気の流れ方向に見たとき上流側の繋ぎ部と少なくとも一部が重なるように配置したので、枠型フレームの強度を高めることができ、枠型フレームの変形抑制効果をより一層向上させることができる。 According to the third aspect of the invention, the connecting portions are provided on the upstream side and the downstream side, respectively, in the flow direction of the air-conditioning air, and the downstream connecting portion extends in the direction opposite to the upstream connecting portion and is air-conditioned. Since it is arranged so that at least a part of the upstream connecting portion overlaps when viewed in the air flow direction, the strength of the frame frame can be increased, and the deformation suppression effect of the frame frame can be further improved. Can do.
実施形態１に係る電気式ヒータを備えた車両用空調装置の概略図である。It is the schematic of the vehicle air conditioner provided with the electric heater which concerns on Embodiment 1. FIG. 電気式ヒータを空調用空気の流れ方向上流側から見た正面図である。It is the front view which looked at the electric heater from the flow direction upstream of the air-conditioning air. 電気式ヒータの分解斜視図である。It is a disassembled perspective view of an electric heater. 図２におけるIV－IV線断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. 実施形態２に係る図２相当図である。FIG. 3 is a view corresponding to FIG. 2 according to the second embodiment. 実施形態２に係る図３相当図である。FIG. 3 is a diagram corresponding to FIG. 3 according to a second embodiment.
　以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.
　（実施形態１）
　図１は、本発明の実施形態１に係る電気式ヒータ５を備えた車両用空調装置１の概略構成を示す図である。車両用空調装置１は、例えば自動車の車室内においてインストルメントパネル（図示せず）の内部に搭載され、空調用空気を温度調節して車室内の各部に供給することができるようになっている。 (Embodiment 1)
FIG. 1 is a diagram showing a schematic configuration of a vehicle air conditioner 1 including an electric heater 5 according to Embodiment 1 of the present invention. The vehicle air conditioner 1 is mounted, for example, inside an instrument panel (not shown) in the interior of an automobile, and can adjust the temperature of the air for air conditioning to be supplied to each part in the interior of the vehicle. .
　具体的には、車両用空調装置１は、ケーシング２と、送風ファン３と、冷却用熱交換器４と、電気式ヒータ５とを備えている。送風ファン３、冷却用熱交換器４及び電気式ヒータ５はケーシング２の内部に収容されている。送風ファン３は空調用空気を送るためのものである。冷却用熱交換器４は、空調用空気を冷却するためのものである。電気式ヒータ５は、ケーシング２の内部において冷却用熱交換器４よりも空調用空気の流れ方向下流側に配置されており、空調用空気を加熱するためのものである。また、ケーシング２の内部には、エアミックスダンパ６が配設されている。エアミックスダンパ６は、電気式ヒータ５を通過する空気の量を変更することによって空調風の温度を変更するためのものである。さらに、ケーシング２の内部には、デフロスタダンパ７、ベントダンパ８及びヒートダンパ９も配設されている。デフロスタダンパ７は、フロントウインド（図示せず）の内面に向けて吹き出す空調風の量を変更するためのものであり、また、ベントダンパ８は乗員の上半身に向けて吹き出す空調風の量を変更するためのものであり、また、ヒートダンパ９は乗員の足下近傍に向けて吹き出す空調風の量を変更するためのものである。 Specifically, the vehicle air conditioner 1 includes a casing 2, a blower fan 3, a cooling heat exchanger 4, and an electric heater 5. The blower fan 3, the cooling heat exchanger 4, and the electric heater 5 are accommodated in the casing 2. The blower fan 3 is for sending air for air conditioning. The cooling heat exchanger 4 is for cooling the air-conditioning air. The electric heater 5 is disposed downstream of the cooling heat exchanger 4 in the flow direction of the air-conditioning air in the casing 2 and heats the air-conditioning air. An air mix damper 6 is disposed inside the casing 2. The air mix damper 6 is for changing the temperature of the conditioned air by changing the amount of air passing through the electric heater 5. Further, a defroster damper 7, a vent damper 8 and a heat damper 9 are also arranged inside the casing 2. The defroster damper 7 is for changing the amount of the conditioned air blown toward the inner surface of the front window (not shown), and the vent damper 8 changes the amount of the conditioned air blown toward the upper body of the occupant. The heat damper 9 is for changing the amount of conditioned air blown out toward the vicinity of the passenger's feet.
　図２及び図３に示すように、電気式ヒータ５は、上部発熱体５０、中央部発熱体５１及び下部発熱体５２と、複数のフィン５３と、バネ（付勢部材）５４と、枠型フレーム６０とを備えており、空調用空気の流れ方向から見たときに全体として左右方向に長い矩形状をなしている。上部発熱体５０、中央部発熱体５１及び下部発熱体５２は、車両に搭載されているバッテリ等（図示せず）からの電力の供給によって発熱する複数のＰＴＣ素子（図示せず）を備えた同じ構造のものであり、左右方向に長い板状をなしている。上部発熱体５０、中央部発熱体５１及び下部発熱体５２のそれぞれの内部には、複数のＰＴＣ素子が左右方向に並ぶように配置されている。 As shown in FIGS. 2 and 3, the electric heater 5 includes an upper heating element 50, a central heating element 51, a lower heating element 52, a plurality of fins 53, a spring (biasing member) 54, and a frame type. The frame 60 has a rectangular shape that is long in the left-right direction as a whole when viewed from the flow direction of the air-conditioning air. The upper heating element 50, the central heating element 51, and the lower heating element 52 are provided with a plurality of PTC elements (not shown) that generate heat by supplying power from a battery or the like (not shown) mounted on the vehicle. It has the same structure and has a long plate shape in the left-right direction. Inside each of the upper heating element 50, the central heating element 51, and the lower heating element 52, a plurality of PTC elements are arranged in the left-right direction.
　上部発熱体５０は、電気式ヒータ５の上下方向中央部よりも上寄りに配置されている。図３に示すように上部発熱体５０の右端部には、ＰＴＣ素子に接続される電極板５０ａが右側へ突出するように設けられている。中央部発熱体５１は、電気式ヒータ５の上下方向中央部に配置されている。中央部発熱体５１の右端部には、ＰＴＣ素子に接続される電極板５１ａが右側へ突出するように設けられている。下部発熱体５２は、電気式ヒータ５の上下方向中央部よりも下寄りに配置されている。下部発熱体５２の右端部には、ＰＴＣ素子に接続される電極板５２ａが右側へ突出するように設けられている。 The upper heating element 50 is disposed above the central portion in the vertical direction of the electric heater 5. As shown in FIG. 3, an electrode plate 50a connected to the PTC element is provided at the right end portion of the upper heating element 50 so as to protrude to the right side. The central heating element 51 is disposed at the center in the vertical direction of the electric heater 5. An electrode plate 51a connected to the PTC element is provided at the right end portion of the central heating element 51 so as to protrude to the right side. The lower heating element 52 is disposed below the central portion in the vertical direction of the electric heater 5. An electrode plate 52a connected to the PTC element is provided at the right end portion of the lower heating element 52 so as to protrude to the right side.
　フィン５３は左右方向に長い連続する波型形状のコルゲートフィンである。フィン５３は、上部発熱体５０の上面及び下面、中央部発熱体５１の上面及び下面、下部発熱体５２の上面及び下面にそれぞれ配設されている。つまり、フィン５３は、上部発熱体５０、中央部発熱体５１及び下部発熱体５２に積層されている。 The fin 53 is a corrugated fin having a continuous wave shape that is long in the left-right direction. The fins 53 are disposed on the upper and lower surfaces of the upper heating element 50, the upper and lower surfaces of the central heating element 51, and the upper and lower surfaces of the lower heating element 52, respectively. That is, the fins 53 are stacked on the upper heating element 50, the central heating element 51, and the lower heating element 52.
　上部発熱体５０と中央部発熱体５１との間に配設されている２つのフィン５３、５３の間には、左右方向に延びる板材５５が配設されている。板材５５の上面及び下面にそれぞれフィン５３が接触している。また、中央部発熱体５１と下部発熱体５２との間に配設されている２つのフィン５３、５３の間にも、同様な板材５５が配設されている。 A plate material 55 extending in the left-right direction is disposed between the two fins 53, 53 disposed between the upper heating element 50 and the central heating element 51. The fins 53 are in contact with the upper surface and the lower surface of the plate material 55, respectively. A similar plate material 55 is also disposed between two fins 53, 53 disposed between the central heating element 51 and the lower heating element 52.
　バネ５４は、電気式ヒータ５の上端部に位置しているフィン５３の上面に配設されている。バネ５４は、枠型フレーム６０に保持された発熱体５０～５２及びフィン５３を積層方向に圧縮するように付勢力を作用させるためのものである。図４に示すように、バネ５４は、フィン５３の上面に沿って左右方向に延びる基板部５４ａと、基板部５４ａにおける空調用空気の流れ方向下流側の縁部から延びる弾性変形部５４ｂとを備えており、全体が弾性を有する金属材料で構成されている。弾性変形部５４ｂは、基板部５４ａから上方へ向かい、かつ、空調用空気の流れ方向上流側へ延びた後、先端側が下方へ屈曲して延びている。この弾性変形部５４ｂが下方向に弾性変形するようになっている。 The spring 54 is disposed on the upper surface of the fin 53 located at the upper end of the electric heater 5. The spring 54 is for applying an urging force so as to compress the heating elements 50 to 52 and the fins 53 held in the frame-type frame 60 in the stacking direction. As shown in FIG. 4, the spring 54 includes a board part 54 a extending in the left-right direction along the upper surface of the fin 53, and an elastic deformation part 54 b extending from an edge of the board part 54 a on the downstream side in the flow direction of air-conditioning air. Provided, and the whole is made of an elastic metal material. The elastic deformation portion 54b extends upward from the substrate portion 54a and extends upstream in the flow direction of the air-conditioning air, and then has a distal end bent and extended downward. This elastic deformation part 54b is elastically deformed downward.
　図３に示すように、枠型フレーム６０は、空調用空気の流れ方向上流側に配置される上流側部材７０と、下流側に配置される下流側部材８０とを有しており、これら上流側部材７０及び下流側部材８０が組み合わされて構成されている。上流側部材７０は、発熱体５０～５２及びフィン５３の積層方向両側にそれぞれ位置する上辺部（第１辺部）７１及び下辺部（第２辺部）７２と、上辺部７１から下辺部７２まで延び、上辺部７１と下辺部７２とを繋ぐ複数の棒状部（繋ぎ部）７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃとを有しており、上辺部７１、下辺部７２、棒状部７４Ｃ、７５Ｃによって略矩形の枠型となっている。上辺部７１と、下辺部７２と、棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃとは樹脂材によって一体成形されている。 As shown in FIG. 3, the frame frame 60 includes an upstream member 70 disposed on the upstream side in the air-conditioning air flow direction and a downstream member 80 disposed on the downstream side. The side member 70 and the downstream side member 80 are combined. The upstream member 70 includes an upper side portion (first side portion) 71 and a lower side portion (second side portion) 72 that are located on both sides in the stacking direction of the heating elements 50 to 52 and the fins 53, and the upper side portion 71 to the lower side portion 72. And has a plurality of rod-like portions (joining portions) 73, 74A to 74C, 75A to 75C that connect the upper side portion 71 and the lower side portion 72, and the upper side portion 71, the lower side portion 72, and the rod- like portions 74C, 75C. Therefore, it becomes a substantially rectangular frame shape. The upper side portion 71, the lower side portion 72, and the rod- like portions 73, 74A to 74C, and 75A to 75C are integrally formed of a resin material.
　上辺部７１は、左右方向に延びている。図４に示すように、上辺部７１の下面にバネ５４の弾性変形部５４ｂが接触するようになっている。図３に示すように、上辺部７１の右端部及び左端部には、空調用空気の流れ方向上流側へ突出する突起７１ａがそれぞれ設けられている。また、上辺部７１の右端部及び左端部には、下方へ突出する縦板部７１ｂがそれぞれ設けられている。左右の縦板部７１ｂ、７１ｂの間に上端部のフィン５３が配置されるようになっている。また、上辺部７１には、下流側へ突出する係合爪（図示せず）が設けられている。 The upper side 71 extends in the left-right direction. As shown in FIG. 4, the elastic deformation portion 54 b of the spring 54 is in contact with the lower surface of the upper side portion 71. As shown in FIG. 3, projections 71 a are provided at the right end and the left end of the upper side 71 so as to protrude upstream in the flow direction of the air-conditioning air. In addition, a vertical plate portion 71b that protrudes downward is provided at the right end portion and the left end portion of the upper side portion 71, respectively. A fin 53 at the upper end is arranged between the left and right vertical plate portions 71b and 71b. Further, the upper side 71 is provided with an engaging claw (not shown) that protrudes downstream.
　下辺部７２は上辺部７１と略平行である。下辺部７２の上面に、下端部のフィン５３の下面が接触するようになっている。下辺部７２の右端部及び左端部には、空調用空気の流れ方向上流側へ突出する突起７２ａがそれぞれ設けられている。また、下辺部７２の右端部及び左端部には、上方へ突出する縦板部７２ｂがそれぞれ設けられている。左右の縦板部７２ｂ、７２ｂの間に下端部のフィン５３が配置されるようになっている。下辺部７２の下面には、切欠部７２ｃが形成されている。 The lower side 72 is substantially parallel to the upper side 71. The lower surface of the fin 53 at the lower end is in contact with the upper surface of the lower side portion 72. On the right end and the left end of the lower side 72, there are provided protrusions 72a that protrude upstream in the air-conditioning air flow direction. Further, a vertical plate portion 72b that protrudes upward is provided at the right end portion and the left end portion of the lower side portion 72, respectively. A fin 53 at the lower end is arranged between the left and right vertical plate portions 72b, 72b. A notch 72 c is formed on the lower surface of the lower side 72.
　上辺部７１と下辺部７２とは、棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃによって繋がれていることで間隔が一定に保たれている。上辺部７１と下辺部７２との間に、発熱体５０～５２、フィン５３、バネ５４及び板材５５が収容されて積層方向に圧縮されている。 The upper side portion 71 and the lower side portion 72 are connected to each other by rod- like portions 73, 74A to 74C, and 75A to 75C, so that the interval is kept constant. The heating elements 50 to 52, the fins 53, the springs 54, and the plate material 55 are accommodated between the upper side 71 and the lower side 72 and compressed in the stacking direction.
　棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃは、上辺部７１及び下辺部７２の長手方向に間隔をあけて配置されている。すなわち、上流側部材７０の幅方向（左右方向）中央部には、中央棒状部７３が配置されている。上流側部材７０の中央棒状部７３よりも右側には、第１右側棒状部７４Ａが配置され、この第１右側棒状部７４Ａよりも右側には第２右側棒状部７４Ｂが配置され、この第２右側棒状部７４Ｂよりも右側には第３右側棒状部７４Ｃが配置されている。また、上流側部材７０の中央棒状部７３よりも左側には、第１左側棒状部７５Ａが配置され、この第１左側棒状部７５Ａよりも左側には第２左側棒状部７５Ｂが配置され、この第２左側棒状部７５Ｂよりも左側には第３左側棒状部７５Ｃが配置されている。 The rod-shaped portions 73, 74A to 74C, and 75A to 75C are arranged at intervals in the longitudinal direction of the upper side portion 71 and the lower side portion 72. That is, the central rod-shaped portion 73 is disposed at the center in the width direction (left-right direction) of the upstream member 70. A first right rod portion 74A is disposed on the right side of the central rod portion 73 of the upstream member 70, and a second right rod portion 74B is disposed on the right side of the first right rod portion 74A. A third right rod portion 74C is disposed on the right side of the right rod portion 74B. A first left bar 75A is disposed on the left side of the central bar 73 of the upstream member 70, and a second left bar 75B is disposed on the left of the first left bar 75A. A third left bar-like part 75C is arranged on the left side of the second left bar-like part 75B.
　中央棒状部７３、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃは、発熱体５０～５２、フィン５３及びバネ５４よりも空調用空気の流れ方向上流側に配置されている。中央棒状部７３、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃにより、発熱体５０～５２、フィン５３及びバネ５４が上流側から支持される。 The central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C are upstream of the heating elements 50 to 52, the fins 53, and the springs 54 in the air-conditioning air flow direction. Arranged on the side. The heating elements 50 to 52, the fins 53, and the spring 54 are supported from the upstream side by the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C.
　中央棒状部７３は、上辺部７１及び下辺部７２に対して垂直に延びている。また、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃは、中央棒状部７３と平行である。中央棒状部７３、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃの太さは上辺部７１及び下辺部７２の太さよりも細く設定されており、中央棒状部７３、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃが空調用空気の流れを阻害する度合いを小さくしている。 The central rod-shaped portion 73 extends perpendicular to the upper side portion 71 and the lower side portion 72. Further, the first to third right side rod-like portions 74A to 74C and the first to third left side rod-like portions 75A to 75C are parallel to the central rod-like portion 73. The thickness of the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C is set smaller than the thickness of the upper side portion 71 and the lower side portion 72. The degree to which the rod-like portion 73, the first to third right-side rod-like portions 74A to 74C and the first to third left-side rod-like portions 75A to 75C impede the flow of air for air conditioning is reduced.
　図２に示すように、中央棒状部７３の中心線をＸ１、第１右側棒状部７４Ａの中心線をＸ２、第２右側棒状部７４Ｂの中心線をＸ３、第３右側棒状部７４Ｃの中心線をＸ４、第１左側棒状部７５Ａの中心線をＸ５、第２左側棒状部７５Ｂの中心線をＸ６、第３左側棒状部７５Ｃの中心線をＸ７としたとき、中心線Ｘ１と中心線Ｘ２との離間寸法Ａ１と、中心線Ｘ１と中心線Ｘ５との離間寸法Ａ２とは等しく設定され、また、中心線Ｘ２と中心線Ｘ３との離間寸法Ｂ１と、中心線Ｘ５と中心線Ｘ６との離間寸法Ｂ２とは等しく設定され、中心線Ｘ３と中心線Ｘ４との離間寸法Ｃ１と、中心線Ｘ６と中心線Ｘ７との離間寸法Ｃ２とは等しく設定されている。また、離間寸法Ｃ１、Ｃ２は離間寸法Ｂ１、Ｂ２よりも広く、離間寸法Ｂ１、Ｂ２は離間寸法Ａ１、Ａ２よりも広く設定されている。つまり、隣合う棒状部７４Ｂ、７４Ｃの間隔及び棒状部７５Ｂ、７５Ｃの間隔が最も広く、隣合う棒状部７３、７４Ａの間隔及び棒状部７３、７５Ａの間隔が最も狭くなっている。そして、隣合う棒状部７４Ａ、７４Ｂの間隔及び棒状部７５Ａ、７５Ｂの間隔は、棒状部７４Ｂ、７４Ｃの間隔よりも狭く、かつ、棒状部７３、７４Ａの間隔よりも広くなっている。これにより、隣合う棒状部７３、７４Ａの間隔、隣合う棒状部７４Ａ、７４Ｂの間隔、隣合う棒状部７４Ｂ、７４Ｃの間隔を比べたとき、上辺部７１及び下辺部７２の長手方向中央部に位置する棒状部７３、７４Ａの間隔よりも、上辺部７１及び下辺部７２の端部側に位置する棒状部７４Ｂ、７４Ｃ（７５Ｂ、７５Ｃ）の間隔の方が広くなる。 As shown in FIG. 2, the center line of the center rod-shaped portion 73 is X1, the center line of the first right rod-shaped portion 74A is X2, the center line of the second right rod-shaped portion 74B is X3, and the center line of the third right rod-shaped portion 74C. Is X4, the center line of the first left rod 75A is X5, the center line of the second left rod 75B is X6, and the center line of the third left rod 75C is X7, the center line X1 and the center line X2 The separation dimension A1 and the separation dimension A2 between the center line X1 and the center line X5 are set equal, and the separation dimension B1 between the center line X2 and the center line X3 and the separation between the center line X5 and the center line X6. The dimension B2 is set equal, and the separation dimension C1 between the center line X3 and the center line X4 and the separation dimension C2 between the center line X6 and the center line X7 are set equal. The separation dimensions C1 and C2 are set wider than the separation dimensions B1 and B2, and the separation dimensions B1 and B2 are set wider than the separation dimensions A1 and A2. That is, the interval between the adjacent rod- like portions 74B and 74C and the interval between the rod- like portions 75B and 75C are the widest, and the interval between the adjacent rod- like portions 73 and 74A and the interval between the rod- like portions 73 and 75A are the narrowest. And the space | interval of adjacent rod-shaped part 74A, 74B and the space | interval of rod-shaped part 75A, 75B are narrower than the space | interval of rod-shaped part 74B, 74C, and are wider than the space | interval of rod-shaped part 73, 74A. Thereby, when the interval between the adjacent rod-shaped portions 73 and 74A, the interval between the adjacent rod-shaped portions 74A and 74B, and the interval between the adjacent rod-shaped portions 74B and 74C are compared, the upper side portion 71 and the lower side portion 72 are centered in the longitudinal direction. The interval between the rod- like portions 74B and 74C (75B and 75C) located on the end side of the upper side portion 71 and the lower side portion 72 is larger than the interval between the located rod- like portions 73 and 74A.
　また、図３に示すように、下流側部材８０は上流側部材７０と同様に構成されている。すなわち、上辺部８１、下辺部８２、中央棒状部８３、第１～第３右側棒状部８４Ａ～８４Ｃ及び第１～第３左側棒状部８５Ａ～８５Ｃを備えている。上流側部材７０と同様に、上辺部８１には縦板部８１ｂが設けられ、下辺部８２には縦板部８２ｂが設けられている。 Further, as shown in FIG. 3, the downstream member 80 is configured in the same manner as the upstream member 70. That is, an upper side part 81, a lower side part 82, a central bar part 83, first to third right side bar parts 84A to 84C and first to third left side bar parts 85A to 85C are provided. Similar to the upstream member 70, the upper side portion 81 is provided with a vertical plate portion 81 b and the lower side portion 82 is provided with a vertical plate portion 82 b.
　空調用空気の流れ方向に見たとき、上流側部材７０の上辺部７１と下流側部材８０の上辺部８１とが重なり、上流側部材７０の下辺部７２と下流側部材８０の下辺部８２とが重なる。上流側部材７０の上辺部７１に設けられた係合爪が、下流側部材８０の上辺部８１に設けられた切欠部８１ｃの周縁部に係合し、また、下流側部材８０の下辺部８２に設けられた係合爪８２ｃが、上流側部材７０の下辺部７２に設けられた切欠部７２ｃの周縁部に係合するようになっている。これにより、上流側部材７０と下流側部材８０とが一体化する。このとき、図４に示すように、上流側部材７０の上辺部７１における空調用空気の流れ方向下流側の面と、下流側部材８０の上辺部８１における上流側の面とは接触し、また、図示しないが、上流側部材７０の下辺部７２における空調用空気の流れ方向下流側の面と、下流側部材８０の下辺部８２における上流側の面とは接触している。 When viewed in the air-conditioning air flow direction, the upper side 71 of the upstream member 70 and the upper side 81 of the downstream member 80 overlap, and the lower side 72 of the upstream member 70 and the lower side 82 of the downstream member 80 Overlap. The engaging claw provided on the upper side portion 71 of the upstream side member 70 engages with the peripheral edge portion of the notch portion 81 c provided on the upper side portion 81 of the downstream side member 80, and the lower side portion 82 of the downstream side member 80. The engaging claw 82 c provided on the upper side member 70 engages with the peripheral edge portion of the notch portion 72 c provided on the lower side portion 72 of the upstream member 70. Thereby, the upstream member 70 and the downstream member 80 are integrated. At this time, as shown in FIG. 4, the surface on the downstream side in the flow direction of the air-conditioning air in the upper side portion 71 of the upstream member 70 and the upstream surface in the upper side portion 81 of the downstream member 80 are in contact with each other. Although not shown, the surface on the downstream side in the flow direction of the air-conditioning air in the lower side portion 72 of the upstream member 70 and the upstream surface in the lower side portion 82 of the downstream member 80 are in contact with each other.
　また、上流側部材７０と下流側部材８０とが一体化した状態では、空調用空気の流れ方向に見たとき、上流側部材７０の中央棒状部７３、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃと、下流側部材８０の中央棒状部８３、第１～第３右側棒状部８４Ａ～８４Ｃ及び第１～第３左側棒状部８５Ａ～８５Ｃとがそれぞれ重なる。 In the state where the upstream member 70 and the downstream member 80 are integrated, when viewed in the air-conditioning air flow direction, the central rod portion 73 and the first to third right rod portions 74A to 74A of the upstream member 70 are seen. 74C and the first to third left side bar-like parts 75A to 75C, the center bar-like part 83 of the downstream member 80, the first to third right side bar-like parts 84A to 84C, and the first to third left side bar-like parts 85A to 85C. Each overlaps.
　枠型フレーム６０の右側には、上辺部７１、８１及び下辺部７２、８２の右端部を覆う右側キャップ部材６１が設けられている。右側キャップ部材６１は、上辺部７１、８１及び下辺部７２、８２の右端部に嵌合することによって枠型フレーム６０に着脱可能に取り付けられている。右側キャップ部材６１の左側には、上辺部７１、８１及び下辺部７２、８２の右端部が挿入された状態で嵌合する嵌合筒部６１ａが設けられている。嵌合筒部６１ａの周壁部には、枠型フレーム６０の突起７１ａ、７２ａが係合する係合孔６１ｄが形成されている。嵌合筒部６１ａの右側にはフランジ６１ｂが形成されている。さらに、フランジ６１ｂには、電極板挿入筒部６１ｃが右側へ突出するように設けられている。電極板５０ａ、５１ａ、５２ｂは、嵌合筒部６１ａに挿入された状態でフランジ６１ｂを貫通して電極板挿入筒部６１ｃの内部に配置される。電極板５０ａ、５１ａ、５２ｂには、図示しないが車両側から延びる電力供給配線が接続されるようになっている。 On the right side of the frame frame 60, a right cap member 61 that covers the right end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 is provided. The right cap member 61 is detachably attached to the frame type frame 60 by being fitted to the right end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82. On the left side of the right cap member 61, there is provided a fitting cylinder portion 61a that fits in a state in which the right end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 are inserted. An engagement hole 61d for engaging the projections 71a and 72a of the frame-type frame 60 is formed in the peripheral wall portion of the fitting cylinder portion 61a. A flange 61b is formed on the right side of the fitting cylinder portion 61a. Furthermore, an electrode plate insertion cylinder portion 61c is provided on the flange 61b so as to protrude rightward. The electrode plates 50a, 51a, and 52b are disposed inside the electrode plate insertion cylinder portion 61c through the flange 61b while being inserted into the fitting cylinder portion 61a. Although not shown, power supply wiring extending from the vehicle side is connected to the electrode plates 50a, 51a, 52b.
　枠型フレーム６０の左側には、上辺部７１、８１及び下辺部７２、８２の左端部を覆う左側キャップ部材６２が設けられている。左側キャップ部材６２は、上辺部７１、８１及び下辺部７２、８２の左端部に嵌合することによって枠型フレーム６０に着脱可能に取り付けられている。右側キャップ部材６１は、上辺部７１、８１及び下辺部７２、８２の左端部が挿入された状態で嵌合する嵌合筒部６１ａが設けられている。嵌合筒部６１ａの周壁部には、枠型フレーム６０の突起７１ａ、７２ａが係合する係合孔６２ｃが形成されている。 On the left side of the frame frame 60, a left cap member 62 that covers the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 is provided. The left cap member 62 is detachably attached to the frame frame 60 by being fitted to the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82. The right cap member 61 is provided with a fitting cylinder portion 61a that fits in a state in which the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 are inserted. On the peripheral wall portion of the fitting cylinder portion 61a, an engagement hole 62c is formed in which the projections 71a and 72a of the frame-type frame 60 are engaged.
　次に、上記のように構成された電気式ヒータ５の組み立て要領について説明する。まず、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５を積層し、上流側部材７０の内部に収容する。そして、バネ５４を弾性変形させながら上端部のフィン５３の上面と上辺部７１の下面との間に挿入する。これにより、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５に圧縮力が作用する。その後、下流側部材８０を上流側部材７０に組み付けて一体化すると、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５及びバネ５４が枠型フレーム６０の内部に収容される。尚、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５を積層し、下流側部材８０の内部に収容した後、上流側部材７０を下流側部材８０に組み付けて一体化してもよい。 Next, the assembly procedure of the electric heater 5 configured as described above will be described. First, the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate material 55 are stacked and accommodated in the upstream member 70. The spring 54 is inserted between the upper surface of the fin 53 at the upper end portion and the lower surface of the upper side portion 71 while being elastically deformed. Thereby, a compressive force acts on the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate material 55. Thereafter, when the downstream member 80 is assembled and integrated with the upstream member 70, the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, the plate material 55, and the spring 54 are placed inside the frame frame 60. Be contained. The upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate material 55 are stacked and accommodated in the downstream member 80, and then the upstream member 70 is assembled to the downstream member 80. It may be integrated.
　次に、以上のようにして得られた電気式ヒータ５を使用する場合について説明する。バネ５４による反発力は、枠型フレーム６０の上流側部材７０の上辺部７１と下辺部７２に対して上辺部７１及び下辺部７２を開くように作用する。同様に、バネ５４の反発力は、枠型フレーム６０の下流側部材８０の上辺部８１と下辺部８２に対して上辺部８１及び下辺部８２を開くように作用する。このとき、上流側部材７０の上辺部７１と下辺部７２が複数の棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃによって繋がれているので、バネ５４による反発力に抗するように上辺部７１と下辺部７２との開きが抑制される。同様に、下流側部材８０の上辺部８１と下辺部８２の開きも抑制される。 Next, the case where the electric heater 5 obtained as described above is used will be described. The repulsive force by the spring 54 acts to open the upper side 71 and the lower side 72 with respect to the upper side 71 and the lower side 72 of the upstream member 70 of the frame frame 60. Similarly, the repulsive force of the spring 54 acts to open the upper side 81 and the lower side 82 with respect to the upper side 81 and the lower side 82 of the downstream member 80 of the frame-type frame 60. At this time, since the upper side 71 and the lower side 72 of the upstream member 70 are connected by the plurality of rod- like parts 73, 74A to 74C, 75A to 75C, the upper side 71 and the upper side 71 are resisted against the repulsive force by the spring 54. The opening with the lower side part 72 is suppressed. Similarly, the opening of the upper side 81 and the lower side 82 of the downstream member 80 is also suppressed.
　枠型フレーム６０の上辺部７１、８１及び下辺部７２、８２にかかる撓み力は、左右方向中央部に近づくほど大きくなる一方、端部に近づくほど小さくなっている。この実施形態では、棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃの間隔、及び棒状部８３、８４Ａ～８４Ｃ、８５Ａ～８５Ｃの間隔が、上辺部７１、８１及び下辺部７２、８２の左右方向中央部に位置するものよりも端部側に位置するものの方が広くなっている。このため、上辺部７１、８１及び下辺部７２、８２にかかる撓み力が大きい中央寄りの部分では棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃ、８３、８４Ａ～８４Ｃ、８５Ａ～８５Ｃが密になり、撓み力が小さい端部寄りの部分では棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃ、８３、８４Ａ～８４Ｃ、８５Ａ～８５Ｃが比較的密でなくなる。したがって、複数の棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃ、８３、８４Ａ～８４Ｃ、８５Ａ～８５Ｃによって枠型フレーム６０の変形を効果的に抑制しながら、棒状部７３、７４Ａ～７４Ｃ、７５Ａ～７５Ｃ、８３、８４Ａ～８４Ｃ、８５Ａ～８５Ｃの数を減らして空気の流通抵抗を減少させることができる。 The bending force applied to the upper side portions 71 and 81 and the lower side portions 72 and 82 of the frame-type frame 60 increases as it approaches the central portion in the left-right direction, and decreases as it approaches the end portion. In this embodiment, the intervals between the rod- like portions 73, 74A to 74C, 75A to 75C and the intervals between the rod- like portions 83, 84A to 84C and 85A to 85C are the center in the left-right direction of the upper side portions 71 and 81 and the lower side portions 72 and 82. The thing located in the edge part side is wider than the thing located in a part. For this reason, the rod- like portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, and 85A to 85C become dense at the central portion where the bending force applied to the upper side portions 71 and 81 and the lower side portions 72 and 82 is large. The rod- like portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, and 85A to 85C become relatively dense at the portion near the end where the bending force is small. Accordingly, the rod- like portions 73, 74A to 74C, 75A to 75C, 83A to 75C, 83, 84A to 84C, and 85A to 85C are effectively restrained from deforming the frame frame 60 while being effectively suppressed. By reducing the number of 75C, 83, 84A to 84C, and 85A to 85C, the air flow resistance can be reduced.
　また、右側及び左側キャップ部材６１、６２を上辺部７１、８１及び下辺部７２、８２の右端部及び左端部にそれぞれ嵌合させることで、上辺部７１、８１及び下辺部７２、８２の開きを右側及び左側キャップ部材６１、６２によっても抑制することができる。 Further, the upper side portions 71 and 81 and the lower side portions 72 and 82 are opened by fitting the right and left cap members 61 and 62 to the right end portion and the left end portion of the upper side portions 71 and 81 and the lower side portions 72 and 82, respectively. It can also be suppressed by the right and left cap members 61 and 62.
　尚、実施形態１では、上流側部材７０及び下流側部材８０の棒状部の数を７本にしているが、これに限らず、６本以下にしてもよいし、８本以上にしてもよい。また、上流側部材７０及び下流側部材８０の棒状部の数は同じにしてもよいし、異なる数にしてもよい。 In the first embodiment, the number of the rod-like portions of the upstream member 70 and the downstream member 80 is seven. However, the number is not limited to this, and may be six or less, or may be eight or more. . Further, the number of rod-like portions of the upstream member 70 and the downstream member 80 may be the same or different.
　（実施形態２）
　図５及び図６は、本発明の実施形態２に係る電気式ヒータ５を示すものである。実施形態２では、実施形態１のものに対し、上流側部材７０の棒状部の本数及び形状と、下流側部材８０の棒状部の本数及び形状が異なっているだけであり、他の部分は実施形態１と同じであるため、以下、実施形態１と同じ部分には同じ符号を付して説明を省略し、異なる部分について説明する。 (Embodiment 2)
5 and 6 show an electric heater 5 according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment only in the number and shape of the rod-shaped portions of the upstream member 70 and the number and shape of the rod-shaped portions of the downstream member 80, and the other portions are implemented. Since the configuration is the same as that of the first embodiment, the same portions as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are described.
　上流側部材７０においては、中央棒状部が省略され、第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃが設けられている。第１右側棒状部７４Ａは、上側へ行くほど右側に位置するように上辺部７１及び下辺部７２に対して傾斜して延びている。また、第２右側棒状部７４Ｂは、上側へ行くほど左側に位置するように傾斜している。また、第３右側棒状部７４Ｃは、上側へ行くほど右側に位置するように傾斜している。 In the upstream member 70, the central rod-like portion is omitted, and first to third right-hand rod portions 74A to 74C and first to third left-hand rod portions 75A to 75C are provided. 74 A of 1st right side bar-shaped parts are inclined and extended with respect to the upper side part 71 and the lower side part 72 so that it may be located on the right side, so that it goes to the upper side. Further, the second right rod-like portion 74B is inclined so as to be positioned on the left side as it goes upward. Further, the third right rod portion 74C is inclined so as to be positioned on the right side as it goes upward.
　第１左側棒状部７５Ａは、上側へ行くほど左側に位置するように上辺部７１及び下辺部７２に対して傾斜して延びている。また、第２左側棒状部７５Ｂは、上側へ行くほど右側に位置するように傾斜している。また、第３左側棒状部７５Ｃは、上側へ行くほど左側に位置するように傾斜している。 The first left rod-like portion 75A extends with an inclination with respect to the upper side portion 71 and the lower side portion 72 so as to be located on the left side as it goes upward. Further, the second left rod-like portion 75B is inclined so as to be positioned on the right side as it goes upward. Further, the third left rod-like portion 75C is inclined so as to be positioned on the left side as it goes upward.
　第１右側棒状部７４Ａの上端部と、第１左側棒状部７５Ａの上端部との離間寸法をＹ１、第１左側棒状部７５Ａの下端部と、第２左側棒状部７５Ｂの下端部との離間寸法をＹ２、第１右側棒状部７４Ａの下端部と、第２右側棒状部７４Ｂの下端部との離間寸法をＹ３、第２右側棒状部７４Ｂの上端部と、第３右側棒状部７４Ｃの上端部との離間寸法をＹ４、第２左側棒状部７５Ｂの上端部と、第３左側棒状部７５Ｃの上端部との離間寸法をＹ５としたとき、離間寸法Ｙ２と離間寸法Ｙ３は等しく設定され、また、離間寸法Ｙ４と離間寸法Ｙ５も等しく設定されている。離間寸法Ｙ１が最も短く設定され、離間寸法Ｙ２、Ｙ３は、離間寸法Ｙ１よりも広く設定され、離間寸法Ｙ４、Ｙ５は、離間寸法Ｙ２、Ｙ３よりも広く設定されている。これにより、隣合う棒状部７４Ａ、７５Ａの上端部の間隔、隣合う棒状部７４Ｂ、７４Ｃの上端部の間隔、隣合う棒状部７５Ｂ、７５Ｃの上端部の間隔を比較したとき、上辺部７１及び下辺部７２の長手方向中央部に位置する棒状部７４Ａ、７５Ａの上端部の間隔よりも端部側に位置する棒状部７４Ｂ、７４Ｃの上端部の間隔及び棒状部７５Ｂ、７５Ｃの上端部の間隔の方が広くなる。 The distance between the upper end of the first right rod 74A and the upper end of the first left rod 75A is Y1, and the distance between the lower end of the first left rod 75A and the lower end of the second left rod 75B is Y1. The dimension is Y2, the distance between the lower end portion of the first right rod portion 74A and the lower end portion of the second right rod portion 74B is Y3, the upper end portion of the second right rod portion 74B, and the upper end of the third right rod portion 74C. The separation dimension Y2 is set to be equal to Y4, and the separation dimension between the upper end part of the second left bar part 75B and the upper end part of the third left bar part 75C is set to Y5. Also, the separation dimension Y4 and the separation dimension Y5 are set equal. The separation dimension Y1 is set to the shortest, the separation dimensions Y2 and Y3 are set wider than the separation dimension Y1, and the separation dimensions Y4 and Y5 are set wider than the separation dimensions Y2 and Y3. Thereby, when comparing the distance between the upper ends of the adjacent rod-shaped portions 74A and 75A, the distance between the upper ends of the adjacent rod-shaped portions 74B and 74C, and the distance between the upper ends of the adjacent rod-shaped portions 75B and 75C, The distance between the upper ends of the rod- like parts 74B and 74C and the distance between the upper ends of the rod- like parts 75B and 75C located closer to the end than the distance between the upper ends of the rod- like parts 74A and 75A located at the longitudinal center of the lower side part 72. Is wider.
　図６に示すように、下流側部材８０においては、中央棒状部が省略され、第１～第３右側棒状部８４Ａ～８４Ｃ及び第１～第３左側棒状部８５Ａ～８５Ｃが設けられている。第１右側棒状部８４Ａは、上側へ行くほど左側に位置するように上辺部８１及び下辺部８２に対して傾斜して延びている。また、第２右側棒状部８４Ｂは、上側へ行くほど右側に位置するように傾斜している。また、第３右側棒状部８４Ｃは、上側へ行くほど左側に位置するように傾斜している。 As shown in FIG. 6, in the downstream member 80, the central bar portion is omitted, and first to third right bar portions 84A to 84C and first to third left bar portions 85A to 85C are provided. 84 A of 1st right side rod-shaped parts are inclined and extended with respect to the upper side part 81 and the lower side part 82 so that it may be located on the left side, so that it goes to the upper side. Further, the second right rod-like portion 84B is inclined so as to be positioned on the right side as it goes upward. Further, the third right rod-shaped portion 84C is inclined so as to be positioned on the left side as it goes upward.
　第１左側棒状部８５Ａは、上側へ行くほど右側に位置するように上辺部８１及び下辺部８２に対して傾斜して延びている。また、第２左側棒状部８５Ｂは、上側へ行くほど左側に位置するように傾斜している。また、第３左側棒状部８５Ｃは、上側へ行くほど右側に位置するように傾斜している。つまり、下流側の第１～第３右側棒状部８４Ａ～８４Ｃ及び第１～第３左側棒状部８５Ａ～８５Ｃは、各々に対応する上流側の第１～第３右側棒状部７４Ａ～７４Ｃ及び第１～第３左側棒状部７５Ａ～７５Ｃとは反対方向に傾斜している。 The first left bar 85A is inclined with respect to the upper side 81 and the lower side 82 so as to be located on the right side as going upward. The second left bar 85B is inclined so as to be positioned on the left side as it goes upward. Further, the third left bar 85C is inclined so as to be positioned on the right side as it goes upward. That is, the first to third right rod portions 84A to 84C on the downstream side and the first to third left rod portions 85A to 85C on the downstream side respectively correspond to the first to third right rod portions 74A to 74C on the upstream side corresponding to the first to third right rod portions 74A to 74C. The first to third left-side bar portions 75A to 75C are inclined in the opposite direction.
　そして、図５に示すように空調用空気の流れ方向に見たとき、上流側の第１右側棒状部７４Ａの上下方向中間部と、下流側の第１右側棒状部８４Ａの上下方向中間部とが重なるように配置される。また、上流側の第２右側棒状部７４Ｂの上下方向中間部と、下流側の第２右側棒状部８４Ｂの上下方向中間部とが重なるように配置される。また、上流側の第３右側棒状部７４Ｃの上下方向中間部と、下流側の第３右側棒状部８４Ｃの上下方向中間部とが重なるように配置される。 As shown in FIG. 5, when viewed in the air-conditioning air flow direction, the upstream intermediate portion of the upstream first right rod-shaped portion 74A and the vertical intermediate portion of the downstream first right rod-shaped portion 84A Are arranged to overlap. Further, the intermediate portion in the vertical direction of the second right rod portion 74B on the upstream side and the intermediate portion in the vertical direction of the second right rod portion 84B on the downstream side are arranged so as to overlap each other. Further, the intermediate portion in the vertical direction of the upstream third right rod portion 74C and the intermediate portion in the vertical direction of the downstream third right rod portion 84C are arranged so as to overlap each other.
　さらに、空調用空気の流れ方向に見たとき、上流側の第１左側棒状部７５Ａの上下方向中間部と、下流側の第１左側棒状部８５Ａの上下方向中間部とが重なるように配置される。また、上流側の第２左側棒状部７５Ｂの上下方向中間部と、下流側の第２左側棒状部８５Ｂの上下方向中間部とが重なるように配置される。また、上流側の第３左側棒状部７５Ｃの上下方向中間部と、下流側の第３左側棒状部８５Ｃの上下方向中間部とが重なるように配置される。 Furthermore, when viewed in the air-conditioning air flow direction, the intermediate portion in the vertical direction of the first left-side rod portion 75A on the upstream side and the intermediate portion in the vertical direction of the first left-side rod portion 85A on the downstream side are overlapped. The Further, the intermediate portion in the vertical direction of the second left bar portion 75B on the upstream side and the intermediate portion in the vertical direction of the second left rod portion 85B on the downstream side are arranged so as to overlap each other. Further, the intermediate portion in the vertical direction of the third left bar portion 75C on the upstream side and the intermediate portion in the vertical direction of the third left rod portion 85C on the downstream side are arranged so as to overlap each other.
　したがって、実施形態２に係る電気式ヒータ５によれば、実施形態１と同様に、枠型フレーム６０の変形を抑制しながら、空気の流通抵抗を減少させることができる。 Therefore, according to the electric heater 5 according to the second embodiment, similarly to the first embodiment, the flow resistance of air can be reduced while suppressing the deformation of the frame frame 60.
　また、空調用空気の流れ方向に見たとき、上流側の第１左側棒状部７５Ａと、下流側の第１左側棒状部８５ＡとがＸ字状に交差し、上流側の第２左側棒状部７５Ｂと、下流側の第２左側棒状部８５ＢとがＸ字状に交差し、上流側の第３左側棒状部７５Ｃと、下流側の第３左側棒状部８５ＣとがＸ字状に交差しているので、枠型フレーム６０の強度が高まって枠型フレーム６０の変形抑制効果をより一層向上させることができる。 Further, when viewed in the flow direction of the air-conditioning air, the first left-side bar portion 75A on the upstream side and the first left-side bar portion 85A on the downstream side intersect in an X shape, and the second left-side bar portion on the upstream side 75B and the downstream second left bar 85B intersect in an X shape, and the upstream third left rod 75C and the downstream third left bar 85C intersect in an X shape. As a result, the strength of the frame frame 60 is increased, and the deformation suppressing effect of the frame frame 60 can be further improved.
　尚、実施形態２では、上流側部材７０及び下流側部材８０の棒状部の数を６本にしているが、これに限らず、５本以下にしてもよいし、７本以上にしてもよい。また、上流側部材７０及び下流側部材８０の棒状部の数は同じにしてもよいし、異なる数にしてもよい。 In the second embodiment, the number of the rod-like portions of the upstream side member 70 and the downstream side member 80 is six. However, the number is not limited thereto, and may be five or less, or may be seven or more. . Further, the number of rod-like portions of the upstream member 70 and the downstream member 80 may be the same or different.
　上述の実施形態はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。 The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
　以上説明したように、本発明に係る車両用空調装置の電気式ヒータは、例えば、空調用空気を加熱する場合に使用することができる。 As described above, the electric heater of the vehicle air conditioner according to the present invention can be used, for example, when heating air for air conditioning.
１　　　　　　　　車両用空調装置
５　　　　　　　　電気式ヒータ
５０～５２　　　　発熱体
５３　　　　　　　フィン
５４　　　　　　　バネ（付勢部材）
６０　　　　　　　枠型フレーム
６１　　　　　　　右側キャップ部材
６２　　　　　　　左側キャップ部材
７１　　　　　　　上辺部（第１辺部）
７２　　　　　　　下辺部（第２辺部）
７３　　　　　　　中央棒状部（繋ぎ部）
７４Ａ～７４Ｃ　　第１～第３右側棒状部（繋ぎ部）
７５Ａ～７５Ｃ　　第１～第３左側棒状部（繋ぎ部）
８４Ａ～８４Ｃ　　第１～第３右側棒状部（繋ぎ部）
８５Ａ～８５Ｃ　　第１～第３左側棒状部（繋ぎ部） DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 5 Electric heater 50-52 Heat generating body 53 Fin 54 Spring (biasing member)
60 Frame type frame 61 Right side cap member 62 Left side cap member 71 Upper side part (first side part)
72 Lower side (second side)
73 Center bar (joint part)
74A to 74C 1st to 3rd right side bar (joint part)
75A to 75C 1st to 3rd left bar (joint)
84A to 84C 1st to 3rd right side bar (joint part)
85A to 85C 1st to 3rd left side bar (joint part)

Claims (3)

  1. 　電力の供給によって発熱する発熱体と、
    　上記発熱体に積層された状態で配設されるフィンと、
    　上記発熱体及び上記フィンを収容して積層状態で保持する枠型フレームと、
    　上記枠型フレームに保持された上記発熱体及び上記フィンを積層方向に圧縮するように付勢力を作用させるための付勢部材とを備え、
    　上記枠型フレームの内部へ送風された空調用空気が上記フィンを通過して加熱される車両用空調装置の電気式ヒータにおいて、
    　上記枠型フレームは、上記発熱体及び上記フィンの積層方向両側にそれぞれ位置する第１辺部及び第２辺部と、該第１辺部から該第２辺部まで延び、該第１辺部と該第２辺部とを繋ぐ複数の繋ぎ部とを有し、
    　複数の上記繋ぎ部は、上記第１辺部及び上記第２辺部の長手方向に間隔をあけて配置され、隣合う上記繋ぎ部の間隔は、上記第１辺部及び上記第２辺部の長手方向中央部に位置する上記繋ぎ部の間隔よりも端部側に位置する上記繋ぎ部の間隔の方が広くなるように設定されていることを特徴とする車両用空調装置の電気式ヒータ。     A heating element that generates heat by supplying power;
    Fins disposed in a stacked state on the heating element;
    A frame-type frame that houses the heating element and the fins and holds them in a laminated state;
    An urging member for applying an urging force to compress the heating element and the fins held in the frame-type frame in the stacking direction;
    In the electric heater of the vehicle air conditioner in which the air-conditioning air blown into the frame-type frame is heated through the fins,
    The frame-type frame includes a first side and a second side located on both sides in the stacking direction of the heating element and the fin, and extends from the first side to the second side, and the first side And a plurality of connecting portions connecting the second side portion,
    The plurality of connecting portions are arranged at intervals in the longitudinal direction of the first side portion and the second side portion, and an interval between the adjacent connecting portions is set between the first side portion and the second side portion. An electric heater for a vehicle air conditioner, characterized in that the interval between the connecting portions located on the end side is set larger than the interval between the connecting portions located in the center portion in the longitudinal direction.
  2. 　請求項１に記載の車両用空調装置の電気式ヒータにおいて、
    　上記枠型フレームには、上記第１辺部及び上記第２辺部の長手方向の端部を覆うキャップ部材が設けられ、該キャップ部材は、上記第１辺部及び上記第２辺部の長手方向の端部に嵌合していることを特徴とする車両用空調装置の電気式ヒータ。     In the electric heater of the vehicle air conditioner according to claim 1,
    The frame-type frame is provided with a cap member that covers end portions in the longitudinal direction of the first side portion and the second side portion, and the cap member has a length of the first side portion and the second side portion. An electric heater for an air conditioner for a vehicle, wherein the electric heater is fitted to an end portion in the direction.
  3. 　請求項１に記載の車両用空調装置の電気式ヒータにおいて、
    　上記枠型フレームの上記繋ぎ部は、空調用空気の流れ方向上流側と下流側にそれぞれ設けられ、
    　上流側の上記繋ぎ部は、上記第１辺部及び上記第２辺部に対して傾斜して延び、
    　下流側の上記繋ぎ部は、上流側の上記繋ぎ部とは反対方向に傾斜して延びるとともに、空調用空気の流れ方向に見たとき上流側の上記繋ぎ部と少なくとも一部が重なるように配置されていることを特徴とする車両用空調装置の電気式ヒータ。
          In the electric heater of the vehicle air conditioner according to claim 1,
    The connecting portion of the frame-type frame is provided on the upstream side and the downstream side, respectively, in the flow direction of the air for air conditioning.
    The upstream connecting portion extends with an inclination with respect to the first side and the second side,
    The downstream connecting portion extends so as to incline in the opposite direction to the upstream connecting portion, and is arranged so that at least a portion thereof overlaps with the upstream connecting portion when viewed in the air-conditioning air flow direction. An electric heater for a vehicle air conditioner.
PCT/JP2015/005236 2014-12-08 2015-10-16 Electric heater for vehicle air conditioning device WO2016092726A1 (en)

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JP2014247917A JP6425525B2 (en) 2014-12-08 2014-12-08 Electric heater for vehicle air conditioner

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