WO2017013846A1 - Dispositif de chauffage électrique - Google Patents

Dispositif de chauffage électrique Download PDF

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Publication number
WO2017013846A1
WO2017013846A1 PCT/JP2016/003209 JP2016003209W WO2017013846A1 WO 2017013846 A1 WO2017013846 A1 WO 2017013846A1 JP 2016003209 W JP2016003209 W JP 2016003209W WO 2017013846 A1 WO2017013846 A1 WO 2017013846A1
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WO
WIPO (PCT)
Prior art keywords
holder
conductive member
heat generating
electric heater
downstream
Prior art date
Application number
PCT/JP2016/003209
Other languages
English (en)
Japanese (ja)
Inventor
山本　雄大
洋介 原田
啓悟 嘉本
Original Assignee
株式会社日本クライメイトシステムズ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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
Priority to EP16827414.0A priority Critical patent/EP3328157B1/fr
Priority to CN201680029097.6A priority patent/CN107615878B/zh
Publication of WO2017013846A1 publication Critical patent/WO2017013846A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/047—Multiple-piece frames assembled on their four or more edges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0476—Means for putting the electric heaters in the frame under strain, e.g. with springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC

Definitions

  • the present invention relates to an electric heater provided with a heating element that generates heat when supplied with electric power.
  • the vehicle air conditioner may be provided with an electric heater for heating air for air conditioning.
  • an electric heater for heating air for air conditioning.
  • a heating element composed of a PTC element that generates heat when electric power is supplied is known (for example, see Patent Documents 1 and 2).
  • the electric heaters of Patent Documents 1 and 2 include a plurality of heat generating elements, a heat dissipating element composed of fins arranged between the heat generating elements, and a housing that accommodates the heat generating elements and the heat dissipating elements. After the outside air flows in and is heated from the opening on the upstream side formed in the above, it flows out from the opening on the downstream side.
  • Each heating element holds a pair of thin metal strips, a PTC element disposed between the thin metal strips, and a pair of thin metal strips and a PCT element, as described in FIG. 7 of each document. It consists of an arrangement frame.
  • the arrangement frame has a holding projection that engages with one thin metal strip from the outer surface and a holding projection that engages with the other thin metal strip from the outer surface, and the one thin metal strip and the other thin plate. A part of the arrangement frame is interposed between the metal strip.
  • a spring element for pressing the heat generating element and the heat radiating element in the stacking direction is disposed inside the housing, and a compressive force acts on the heat generating element and the heat radiating element by the spring element.
  • the holding projections are in contact with the thin metal strip in a state where a part of the arrangement frame is interposed between one thin metal strip and the other thin metal strip, one thin metal strip and the other thin metal strip are in contact with each other.
  • the metal band is completely restrained by the arrangement frame, and the distance between the two thin metal bands cannot be changed.
  • the compressive force of the spring element acts in the direction of reducing the distance between the two thin metal strips with respect to the outer surface of one thin metal strip and the other thin metal strip.
  • the present invention has been made in view of such points, and the object of the present invention is to improve the assembly workability by holding the heat generating element and the conductive member in a holder and integrating them.
  • An object of the present invention is to secure a sufficient pressure contact force between the conductive member and the heating element to suppress a decrease in the amount of heat generated by the heating element.
  • the first conductive member and the second conductive member are held in the holder by the engaging portion of the holder, and in this state, the first conductive member is held in the second conductive member. Displaceable in the direction of approaching and leaving.
  • the first invention is A heat generating part having a heat generating element that generates heat by supplying power; Fins for transferring heat of the heat generating part to external air; A housing for holding the heat generating portion and the fin in a state in which the heat generating portion and the fin are stacked in a direction intersecting with the flow direction of the external air; An electric heater that is assembled to the housing and includes a spring member for applying a compressive force in the stacking direction to the heat generating portion and the fin.
  • the heat generating part is arranged so as to sandwich the heat generating element from both sides in the stacking direction and to be in contact with the heat generating element so as to supply electric power to the heat generating element from the outside.
  • the holder includes a first engagement portion that engages with the first conductive member from the side opposite to the heating element side, and a holder that engages with the second conductive member from the side opposite to the heating element side.
  • a second engaging portion to be joined, The holder is configured to allow displacement of the first conductive member in a direction in which the first conductive member is in contact with or separated from the second conductive member between the first engagement portion and the second engagement portion. It is characterized by.
  • the first conductive member and the second conductive member are held in the holder by the first engaging portion and the second engaging portion of the holder, and in this state, the heating element is connected to the first conductive member and the second conductive member. Since it is disposed between the two conductive members, the heating element is also held by the holder. Therefore, since the heat generating part is integrated, the assembly workability is improved when the heat generating part is assembled to the housing together with the fins.
  • the compression force by the spring member will also act on the heat generating part.
  • the first conductive member held by the holder can be displaced in the direction of contact with and away from the second conductive member, the first conductive member, the second conductive member, and the heating element Even if the thickness or shape varies, the pressure contact force between the first conductive member and the heating element and the pressure contact force between the second conductive member and the heating element can be sufficiently secured.
  • the holder has a frame shape surrounding the periphery of the first conductive member and the second conductive member,
  • the first engaging portion and the second engaging portion are formed by protrusions that protrude from the inner surface of the holder toward the inside of the holder.
  • the first engaging portion and the second engaging portion are protrusions, the first conductive member and the second conductive member are reliably engaged, and the engaged state is maintained. It becomes possible to do.
  • the holder is made of resin material, When the holder is viewed from the stacking direction, the first engaging portion and the second engaging portion are arranged so as not to overlap each other.
  • the first engagement portion and the second engagement portion are not overlapped with each other, so that when the holder is molded, the first engagement portion and the second engagement portion are undercut. There is no part. Therefore, it is not necessary to provide a slide mold or the like for avoiding the undercut portion in the mold.
  • the second conductive member is insert-molded in the holder.
  • the second conductive member and the holder are reliably integrated by insert-molding the second conductive member into the holder. Moreover, the assembly man-hour at the assembly site is reduced.
  • the holder is configured to allow displacement of the second conductive member in a direction in which the second conductive member comes into contact with and separates from the first conductive member between the first engagement portion and the second engagement portion. It is characterized by.
  • the second conductive member held by the holder can be displaced in a direction in which the second conductive member is brought into contact with or separated from the first conductive member. Therefore, the pressure contact force between the first conductive member and the heating element. In addition, it is possible to ensure a sufficient pressure contact force between the second conductive member and the heating element.
  • a sixth invention is the second invention, wherein: On the inner surface of the holder, there is provided a protrusion that protrudes inward of the holder from between the first engagement portion and the second engagement portion, The dimension of the protrusion in the stacking direction is set shorter than the dimension of the heat generating element in the stacking direction.
  • the heating element is positioned by the protrusion on the inner surface of the holder. And since the dimension of the said lamination direction in this protrusion part is shorter than the dimension of the said lamination direction in a heat generating element, a protrusion part inhibits the displacement to the direction which a 1st conductive member contacts / separates to a 2nd conductive member. None do.
  • the first conductive member and the second conductive member are held in the holder by the engaging portion of the holder, and in this state, the first conductive member is brought into contact with and separated from the second conductive member. Since the displacement in the direction is made possible, the press working force between the first and second conductive members and the heat generating element is sufficiently secured to suppress the decrease in the heat generation amount of the heat generating element while improving the assembly workability of the heat generating part. be able to.
  • the first engaging portion and the second engaging portion are constituted by the protrusions protruding from the inner surface of the holder, the first conductive member and the second conductive member are prevented from dropping from the holder. It can be prevented in advance.
  • the first engagement portion and the second engagement portion are arranged so as not to overlap each other when the holder is viewed from the stacking direction, the first engagement portion and the second engagement are arranged.
  • the part does not become an undercut part. Therefore, mold costs can be reduced.
  • the second conductive member is insert-molded in the holder, the second conductive member and the holder can be reliably integrated. Moreover, the assembly man-hour at the assembly site can be reduced.
  • the second conductive member can be displaced in the direction of contacting and separating from the first conductive member, sufficient pressure contact force between the first and second conductive members and the heating element is ensured. it can.
  • the heating element can be positioned by the protrusion provided on the inner surface of the holder. And since the dimension of the said lamination direction in the protrusion part was set shorter than the dimension of the said lamination direction in a heat generating element, a protrusion part inhibits the displacement to the direction in which a 1st conductive member contacts / separates a 2nd conductive member. The pressure contact force between the first and second conductive members and the heat generating element can be sufficiently secured.
  • FIG. 2 is a view corresponding to FIG. 1 with a left cap and a right cap removed.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is a perspective view of the 1st exothermic part. It is a disassembled perspective view of a 1st heat generating part. It is the figure which expanded the part enclosed with the dashed-dotted line in FIG. 4, and was seen from diagonally upward. It is a top view which shows a part of spring member. It is a perspective view which shows the assembly
  • FIG. 7 is a sectional view taken along line XX in FIG. 6.
  • FIG. 11 is a diagram corresponding to FIG. 10 according to a modified example.
  • FIG. 1 is a perspective view of an electric heater 1 according to an embodiment of the present invention.
  • the electric heater 1 is, for example, a so-called PTC heater that is disposed in a vehicle air conditioner (not shown) and is used as an air heater that heats air for air conditioning.
  • the electric heater 1 can be used as an auxiliary air heater, or can be used as a main air heater with a large heating amount.
  • the electric heater 1 is supplied with electric power from a battery (not shown) mounted on the vehicle.
  • the electric heater 1 can be used when heating various air besides the air heater of an air conditioner.
  • the electric heater 1 is viewed from the downstream side with reference to the flow direction of the external air.
  • the electric heater 1 is defined as the downstream side in FIGS. This side may be used as the upstream side.
  • the left-right direction of the electric heater 1 the right side when viewed from the downstream side in the flow direction of the external air is referred to as “right”, and the left side is referred to as “left”.
  • the electric heater 1 includes first to fourth heat generating portions A1 to A4, fins 2, a housing 3 that holds the first to fourth heat generating portions A1 to A4 and the fins 2, and a spring member 4.
  • the left cap 5 and the right cap 6 have a substantially rectangular shape that is long in the left-right direction as a whole.
  • the first to fourth heat generating portions A1 to A4 are all the same, and are long in the left-right direction of the electric heater 1 as shown in FIG. Further, as shown in FIG. 2, the first heat generating part A1 is located at the uppermost position, the fourth heat generating part A4 is located at the lowest position, and the second heat generating part A2 is located below the first heat generating part A1.
  • the third heat generating part A3 is located between the second heat generating part A2 and the fourth heat generating part A4.
  • the fins 2 are disposed on the upper and lower surfaces of the first heat generating part A1, and also on the upper and lower surfaces of the second heat generating part A2, the upper and lower surfaces of the third heat generating part A3, and the upper and lower surfaces of the fourth heat generating part A4. Has been placed. That is, the first to fourth heat generating portions A1 to A4 and the fins 2 are stacked in the vertical direction, which is the direction intersecting the flow direction of the external air.
  • the fin 2 is a corrugated fin made of a thin plate material made of, for example, an aluminum alloy, and is a heat transfer member for transmitting the heat of the first to fourth heat generating portions A1 to A4 to the external air.
  • the direction in which the waveform of the fin 2 continues is the left-right direction of the electric heater 1.
  • the fin 2 is continuous from the left end portion to the right end portion of the housing 3 inside the housing 3. External air flows through the fins 2.
  • power may be controlled to be supplied individually to the first to fourth heat generating portions A1 to A4, or power may be supplied to all of them.
  • the first heat generating part A1 includes a plurality of PTC elements 10, 10,..., An upper electrode plate (first conductive member) 12, and a lower electrode plate (second conductive member) 13. And a holder 14.
  • Each PTC element 10 is a heating element that generates heat when power is supplied, and is formed in a plate shape that is long in the left-right direction of the electric heater 1.
  • the number of PTC elements 10 is four, and the PTC elements 10 are arranged at intervals in the left-right direction.
  • the number and arrangement of the PTC elements 10 are not limited to this.
  • the upper electrode plate 12 and the lower electrode plate 13 are formed by molding a conductive metal plate, and are electrically connected in contact with each PTC element 10.
  • the upper electrode plate 12 extends in the left-right direction.
  • a through hole 12 a that penetrates in the vertical direction (thickness direction of the upper electrode plate 12) is formed at the right end of the upper electrode plate 12.
  • the left end portion of the upper electrode plate 12 is a connection portion 12b formed so as to extend leftward after being bent upward.
  • a harness (not shown) to which power of a battery mounted on the vehicle is supplied can be connected to the connection portion 12b.
  • the lower electrode plate 13 also extends in the left-right direction.
  • a through hole 13 a that penetrates in the vertical direction (thickness direction of the lower electrode plate 13) is formed at the right end of the lower electrode plate 13.
  • the left end portion of the lower electrode plate 13 is a connection portion 13b formed to extend to the left side.
  • the connecting portion 13b of the lower electrode plate 13 and the connecting portion 12b of the upper electrode plate 12 are separated from each other in the vertical direction.
  • the connecting portion 13b of the lower electrode plate 13 can also be connected to a harness (not shown).
  • the PTC elements 10, 10,... are arranged between the upper electrode plate 12 and the lower electrode plate 13. That is, the upper electrode plate 12 and the lower electrode plate 13 sandwich the PTC elements 10, 10,... From both sides in the stacking direction of the first to fourth heating portions A1 to A4 and the fin 2, and the PTC elements 10, Are arranged so as to be in contact with the PTC elements 10, 10... For supplying electric power from the outside.
  • the holder 14 is made of a resin material having heat resistance and electrical insulation, and is for holding and integrating the PTC elements 10, 10,..., The upper electrode plate 12 and the lower electrode plate 13. As shown in FIG. 5, the holder 14 has a frame shape surrounding the peripheral portions of the PTC elements 10, 10,..., The upper electrode plate 12 and the lower electrode plate 13. That is, the holder 14 has a downstream side wall portion 20 extending along a downstream edge of the upper electrode plate 12 and the lower electrode plate 13 in the direction of the external air flow, and an external air flow of the upper electrode plate 12 and the lower electrode plate 13.
  • An upstream side wall portion 21 extending along the edge on the upstream side in the direction, a left wall portion 22 extending so as to connect the left end portions of the downstream side wall portion 20 and the upstream side wall portion 21, and the downstream side wall portion 20 and the upstream side wall portion 21.
  • a right wall portion 23 extending so as to connect the right end portions of each other.
  • the upper part of the left wall part 22 protrudes upward from the upper part of the downstream side wall part 20 and the upstream side wall part 21.
  • the connection portion 12b of the upper electrode plate 12 is fitted to the upper portion of the left wall portion 22 from above.
  • the connecting portion 13b of the lower electrode plate 13 is fitted to the lower portion of the left wall portion 22 from below.
  • the upper part of the right wall part 23 of the holder 14 projects upward from the upper parts of the downstream side wall part 20 and the upstream side wall part 21, and the lower part of the right wall part 23 of the holder 14 is the lower part of the downstream side wall part 20 and the upstream side wall part 21. Protrudes downward. Therefore, when the vertical dimension of the downstream side wall part 20, the upstream side wall part 21, the left wall part 22 and the right wall part 23 is compared, the downstream side wall part 20 and the upstream side wall part 21 are the shortest. As shown in FIGS. 3 and 10, the vertical dimension of the downstream side wall part 20 and the upstream side wall part 21 is the vertical dimension of the PTC element 10, the vertical dimension of the upper electrode plate 12, and the lower electrode plate 13. It is set longer than the length including the vertical dimension.
  • the downstream side wall portion 20 is provided with four flat portions 20a, 20a,. Each flat portion 20a extends in the vertical direction.
  • the inner surface (the inner surface of the holder 14) of each flat portion 20 a of the downstream side wall portion 20 is engaged with the upper electrode plate 12 from the side opposite to the PTC element 10 side (upper side).
  • the downstream upper engagement portion 20b and the downstream lower engagement portion 20c are each formed by a protrusion that protrudes inward of the holder 14.
  • the downstream upper engagement portion 20b is formed at the right side of the flat portion 20a, while the downstream lower engagement portion 20c is formed at the left side of the flat portion 20a.
  • the downstream upper engaging portion 20b and the downstream lower engaging portion 20c are arranged so as not to overlap each other. ing. Thereby, at the time of shaping
  • the vertical separation between the downstream upper engagement portion 20b and the downstream lower engagement portion 20c is the vertical dimension of the PTC element 10, the vertical dimension of the upper electrode plate 12, and the vertical direction of the lower electrode plate 13. It is set to be longer than the length including the above dimensions. Further, the dimension in the stacking direction (vertical direction) of the downstream protrusion 20 d is set shorter than the dimension in the stacking direction of the PTC element 10.
  • the upstream side wall portion 21 is also provided with four flat portions 21a, 21a,.
  • Each flat part 21a is arrange
  • the inner surface (the inner surface of the holder 14) of each flat portion 21 a of the upstream side wall portion 21 is engaged with the upper electrode plate 12 from the side opposite to the PTC element 10 side (upper side).
  • the upstream upper engagement portion 21 b and the upstream lower engagement portion 21 c are each configured by a protrusion that protrudes inward of the holder 14.
  • the upstream upper engagement portion 21b is formed at the left portion of the flat portion 21a, while the upstream lower engagement portion 21c is formed at the right portion of the flat portion 20a.
  • the upstream upper engaging portion 21b and the upstream lower engaging portion 21c are arranged so as not to overlap each other. ing. Thereby, when the holder 14 is molded, the upstream upper engaging portion 21b and the upstream lower engaging portion 21c do not become undercut portions, so that the mold cost can be reduced.
  • the vertical separation between the upstream upper engagement portion 21b and the upstream lower engagement portion 21c is the vertical dimension of the PTC element 10, the vertical dimension of the upper electrode plate 12, and the vertical direction of the lower electrode plate 13. It is set to be longer than the length including the above dimensions. Further, the dimension in the stacking direction (vertical direction) of the upstream protrusion 21d is set to be shorter than the dimension in the stacking direction of the PTC element 10.
  • the separation dimension between the downstream upper engagement portion 20b and the downstream lower engagement portion 20c is set as described above, and the separation dimension between the upstream upper engagement portion 21b and the upstream lower engagement portion 21c is as described above.
  • the upper electrode plate 12 and the lower electrode plate 13 can be moved in the vertical direction inside the holder 14 together with the PTC element 10. That is, the upper electrode plate 12 is vertically moved between the downstream upper engagement portion 20b and the downstream lower engagement portion 20c and between the upstream upper engagement portion 21b and the upstream lower engagement portion 21c. It can be moved, and this allows the displacement in the direction of contacting and separating from the lower electrode plate 13.
  • the lower electrode plate 13 is placed between the downstream upper engagement portion 20b and the downstream lower engagement portion 20c, and between the upstream upper engagement portion 21b and the upstream lower engagement portion 21c. Further, it can be moved in the vertical direction, and this allows the displacement in the direction of contact with and away from the upper electrode plate 12.
  • the second to fourth heat generating portions A2 to A4 have the same structure as the first heat generating portion A1, and thus the description thereof is omitted.
  • the housing 3 is a combination of an upstream housing component member 30 and a downstream housing component member 31 that are divided in the flow direction of the external air.
  • the upstream housing constituent member 30 and the downstream housing constituent member 31 are made of a resin material having heat resistance and electrical insulation.
  • the upstream housing component 30 is formed with an upstream opening 30 a through which external air flows.
  • the downstream housing component 31 also has a downstream opening 31a through which external air flows.
  • the upstream opening 30a and the downstream opening 31a have substantially the same shape and the same size.
  • the downstream opening 31 a of the downstream housing component 31 is an insertion portion for inserting the spring member 4 from the outside to the inside of the housing 3, as will be described in detail later.
  • the downstream housing component 31 is formed with a fitting convex portion 31b protruding toward the upstream side.
  • the upstream housing constituent member 30 is formed with a fitting recess 30b into which the fitting convex portion 31b of the downstream housing constituent member 31 is fitted.
  • the fitting convex portion 31b is fitted in a state inserted into the fitting concave portion 30b.
  • the downstream housing component 31 is provided with a plurality of reinforcing portions 31c extending in the vertical direction so as to cross the downstream opening 31a in the vertical direction.
  • the reinforcing portion 31c is formed in a bar shape extending in an inclined manner.
  • the present invention is not limited to this.
  • the reinforcing portion 31c may extend in the vertical direction.
  • the upper end portion of the reinforcing portion 31c is continuous with the lower surface of the upper wall portion of the downstream housing component 31.
  • the lower end portion of the reinforcing portion 31 c is continuous with the upper surface of the lower wall portion of the downstream housing component 31. Further, the upper ends or the lower ends of the two adjacent reinforcing portions 31c are integrated.
  • the upstream housing component 30 is also provided with a reinforcing portion 30 c similar to the downstream housing component 31.
  • a predetermined gap is formed between each of the holders 14. That is, the outer surface of the upstream side wall portion 21 of the holder 14 is separated from the inner surface of the reinforcing portion 30 c of the upstream housing component 30, and the outer surface of the downstream side wall portion 20 of the holder 14 is separated from the downstream housing component 31. It is away from the inner surface of the reinforcing part 31c.
  • the first to fourth heat generating portions A1 to A4 do not come into strong contact with the reinforcing portions 30c and 31c, and when a compressive force is applied by the spring member 4 inside the housing 3, the first heat generating portions A1 to A4 The first to fourth heat generating portions A1 to A4 can move in the vertical direction.
  • the spring member 4 is assembled inside the housing 3 and applies a compressive force in the stacking direction to the first to fourth heat generating portions A1 to A4 and the fins 2.
  • the spring member 4 is formed, for example, by molding a metal plate having elasticity, and extends from the left end portion of the housing 3 to the right end portion. As shown in FIGS. 7 to 9, the spring member 4 is bent upward from a plate portion 40 extending in the left-right direction and an upstream edge of the plate portion 40 in the flow direction of the external air, and then extends downstream.
  • a plurality of upstream urging portions 41 and a plurality of downstream urging portions 42 that are bent upward from an edge of the plate portion 40 on the downstream side in the flow direction of the external air and then extend upstream are provided.
  • the upstream urging portions 41 are provided with a space in the left-right direction, and the downstream urging portions 42 are also provided in the same manner.
  • the lower surface of the plate portion 40 of the spring member 4 is in contact with the upper surface of the fin 2 disposed at the upper end portion.
  • the upper end portions of the upstream biasing portion 41 and the downstream biasing portion 42 are in contact with the inner surface of the upper wall portion of the housing 3.
  • the upstream urging portion 41 and the downstream urging portion 42 are mainly elastically deformed between the fin 2 at the upper end and the inner surface of the upper wall portion of the housing 3, so that the first to fourth heat generating portions A1 to A1 ⁇ It is comprised so that a compressive force may be applied with respect to A4 and the fin 2 in the lamination direction.
  • the plate portion 40 of the spring member 4 has a downstream housing component 31 between the adjacent upstream biasing portions 41 and 41 and between the adjacent downstream biasing portions 42 and 42.
  • a cutout portion 40a into which the reinforcing portion 31c is fitted is formed.
  • the notch 40a is formed so as to extend downstream from the upstream edge of the plate 40, that is, in the insertion direction when the spring member 4 is inserted into the downstream opening 31a. Opened at the upstream edge.
  • An inclined edge portion 40b for guiding the reinforcing portion 31c into the notch portion 40a is provided upstream of the left and right edges of the notch portion 40a.
  • the plate portion 40 of the spring member 4 is provided with an abutting portion 43 that abuts from the outside of the housing 3 against the reinforcing portion 31c of the downstream housing constituent member 31.
  • the contact portion 43 is formed in a plate shape extending upward from the vicinity of the edge portion on the downstream side in the flow direction of the external air in the cutout portion 40a.
  • the reinforcing portion 31c comes into contact with the surface of the contact portion 43 on the downstream side in the flow direction of the external air.
  • the left cap 5 and the right cap 6 are made of a resin material having heat resistance and electrical insulation. As shown in FIG. 1, the left cap 5 covers the connecting portions 12b and the connecting portions 13b of the first to fourth heat generating portions A1 to A4, and the left end portions of the upstream housing constituent member 30 and the downstream housing constituent member 31. It is formed so as to cover. The right cap 6 is formed so as to cover the right end portions of the upstream housing component 30 and the downstream housing component 31. The left cap 5 and the right cap 6 are attached after the upstream housing component 30 and the downstream housing component 31 are combined.
  • the assembly procedure of the electric heater 1 configured as described above will be described.
  • the first to fourth heat generating portions A1 to A4 and the fins 2 are stacked and placed on one member of the upstream housing component 30 and the downstream housing component 31.
  • the downstream upper engaging portion 20b and the upstream upper engaging portion 21b of the holder 14 of the first heat generating portion A1 are engaged with the upper electrode plate 12 from the upper side and the downstream side. Since the lower engaging portion 20c and the upstream lower engaging portion 21c are engaged from the lower side of the lower electrode plate 13, the upper electrode plate 12 and the lower electrode plate 13 do not fall off the holder 14.
  • the PTC element 10 and the integrated state can be maintained. Therefore, when the first to fourth heat generating portions A1 to A4 are assembled to the housing 3 together with the fins 2, the assembling workability is improved. At this time, the spring member 4 is removed without being assembled.
  • the upstream housing component 30 and the downstream housing component 31 are combined.
  • the fitting convex part 31b is inserted and fitted into the fitting concave part 30b, and the upstream housing constituent member 30 and the downstream housing constituent member 31 are integrated. Since the spring member 4 is removed when the upstream housing component 30 and the downstream housing component 31 are combined, the reaction force by the spring member 4 acts on the upstream housing component 30 and the downstream housing component 31. As a result, assembly workability is good.
  • the spring member 40 is inserted into the housing 3 through the downstream opening 31 a of the housing 3.
  • the reaction force of the spring member 40 acts, but since the first to fourth heat generating portions A1 to A4 and the fins 2 are already held inside the housing 3, the spring member Only 4 should be pressed, and the assembly workability is good.
  • the compression force by the spring member 4 also acts on the first to fourth heat generating parts A1 to A4.
  • the upper electrode plate 12 held by the holder 14 can be displaced in a direction in which the upper electrode plate 12 is in contact with or separated from the lower electrode plate 13.
  • the plate 13 and the PTC element 10 vary in thickness and shape, the pressure contact force between the upper electrode plate 12 and the PTC element 10 and the pressure contact force between the lower electrode plate 13 and the PTC element 10 are sufficiently secured. It becomes possible. Thereby, the fall of the emitted-heat amount of the PTC element 10 can be suppressed.
  • the spring member 4 when the spring member 4 is inserted into the housing 3, the spring member 4 can be assembled in a state in which the downstream reinforcing portion 31 c of the housing 3 is inserted into the cutout portion 40 a of the spring member 4. As a result, assembly workability is improved.
  • the predetermined gap is provided between the reinforcing portions 30c and 31c of the housing 3 and the heat generating portions A1 to A4, it is possible to suppress the reinforcing portions 30c and 31c and the heat generating portions A1 to A4 from coming into strong contact. . Thereby, the compressive force of the spring member 4 can be reliably applied to the heat generating portions A1 to A4 and the fins 2.
  • the contact part 43 which contacts the downstream reinforcement part 31c is provided in the spring member 4, the insertion of the spring member 4 can be stopped in a state where the spring member 4 is inserted to a predetermined position.
  • the lower electrode plate 13 may be insert-mold to the holder 14 like the modification of embodiment shown in FIG.
  • the lower electrode plate 13 is not displaced with respect to the holder 14, but the upper electrode plate 12 can allow displacement in a direction in which the lower electrode plate 13 is in contact with or separated from the lower electrode plate 13.
  • the electric heater according to the present invention can be used, for example, as an air heater of a vehicle air conditioner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

Un support 14 est pourvu : de parties de mise en prise 20b, 21b qui viennent en prise avec une plaque d'électrode supérieure 12 à partir du côté élément PTC 10 et du côté opposé ; et de parties de mise en prise 20c, 21c qui viennent en prise avec une plaque d'électrode inférieure 13 à partir du côté élément PTC 10 et du côté opposé. Le support 14 est conçu de sorte à permettre le déplacement de la plaque d'électrode supérieure 12 dans la direction vers la plaque d'électrode inférieure 13 ou à l'opposé de celle-ci entre les parties de mise en prise 20b, 21b et les parties de mise en prise 20c, 21c.
PCT/JP2016/003209 2015-07-22 2016-07-05 Dispositif de chauffage électrique WO2017013846A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16827414.0A EP3328157B1 (fr) 2015-07-22 2016-07-05 Dispositif de chauffage électrique
CN201680029097.6A CN107615878B (zh) 2015-07-22 2016-07-05 电热器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-145013 2015-07-22
JP2015145013A JP6568738B2 (ja) 2015-07-22 2015-07-22 電気式ヒータ

Publications (1)

Publication Number Publication Date
WO2017013846A1 true WO2017013846A1 (fr) 2017-01-26

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Country Link
EP (1) EP3328157B1 (fr)
JP (1) JP6568738B2 (fr)
CN (1) CN107615878B (fr)
WO (1) WO2017013846A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3083744A1 (fr) * 2018-07-13 2020-01-17 Valeo Systemes Thermiques Cadre de dispositif de chauffage electrique de vehicule
FR3126837B1 (fr) * 2021-09-03 2023-09-08 Valeo Systemes Thermiques Radiateur électrique d’une installation de ventilation, de chauffage et/ou d’air climatisé.

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JPS5557288A (en) * 1978-10-21 1980-04-26 Eichenauer Fa Fritz Electric resistance heating element
JPH07153555A (ja) * 1993-11-30 1995-06-16 Murata Mfg Co Ltd 正特性サーミスタヒータ及びそれを用いた正特性サーミスタヒータ装置
EP1370117A2 (fr) * 2002-06-05 2003-12-10 CEBI S.p.A. Radiateur électrique avec éléments PTC, en particulier pour systèmes de ventilation de cabine d' automobile
JP2004198100A (ja) * 2002-12-19 2004-07-15 Catem Gmbh & Co Kg ハウジングを備えた電気ヒータ
JP2005276835A (ja) * 2004-03-22 2005-10-06 Halla Climate Control Corp 電熱ヒーター
WO2008032662A1 (fr) * 2006-09-13 2008-03-20 Calsonic Kansei Corporation Chauffage électrique et son procédé de fabrication
JP4880648B2 (ja) * 2007-07-18 2012-02-22 エーベルスパッヒャー・カテム・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディットゲゼルシャフト 電気加熱装置およびその製造方法
US20130161307A1 (en) * 2011-12-22 2013-06-27 Eberspacher Catem Gmbh & Co. Kg Heat generating element
EP2629585A1 (fr) * 2012-02-20 2013-08-21 Bitron S.p.A. Appareillage de chauffage, en particulier pour chauffer le compartiment passager d'une automobile, and méthode relative ä l'assemblage dudit appareillage

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DE10118600C2 (de) * 2001-04-12 2003-05-28 Webasto Thermosysteme Gmbh Elektrische Heizeinrichtung
DE10143852B4 (de) * 2001-09-06 2008-04-17 Webasto Ag Heizkörper
ES2303167T3 (es) * 2005-09-23 2008-08-01 CATEM GMBH & CO. KG Elemento generador de calor de un dispositivo calefactor.
EP2395295B1 (fr) * 2010-06-11 2013-03-06 Behr GmbH & Co. KG Echangeur de chaleur

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Publication number Priority date Publication date Assignee Title
JPS5557288A (en) * 1978-10-21 1980-04-26 Eichenauer Fa Fritz Electric resistance heating element
JPH07153555A (ja) * 1993-11-30 1995-06-16 Murata Mfg Co Ltd 正特性サーミスタヒータ及びそれを用いた正特性サーミスタヒータ装置
EP1370117A2 (fr) * 2002-06-05 2003-12-10 CEBI S.p.A. Radiateur électrique avec éléments PTC, en particulier pour systèmes de ventilation de cabine d' automobile
JP2004198100A (ja) * 2002-12-19 2004-07-15 Catem Gmbh & Co Kg ハウジングを備えた電気ヒータ
JP2005276835A (ja) * 2004-03-22 2005-10-06 Halla Climate Control Corp 電熱ヒーター
WO2008032662A1 (fr) * 2006-09-13 2008-03-20 Calsonic Kansei Corporation Chauffage électrique et son procédé de fabrication
JP4880648B2 (ja) * 2007-07-18 2012-02-22 エーベルスパッヒャー・カテム・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディットゲゼルシャフト 電気加熱装置およびその製造方法
US20130161307A1 (en) * 2011-12-22 2013-06-27 Eberspacher Catem Gmbh & Co. Kg Heat generating element
EP2629585A1 (fr) * 2012-02-20 2013-08-21 Bitron S.p.A. Appareillage de chauffage, en particulier pour chauffer le compartiment passager d'une automobile, and méthode relative ä l'assemblage dudit appareillage

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Also Published As

Publication number Publication date
EP3328157A4 (fr) 2018-08-01
JP2017027776A (ja) 2017-02-02
EP3328157A1 (fr) 2018-05-30
CN107615878B (zh) 2020-09-22
EP3328157B1 (fr) 2022-09-28
JP6568738B2 (ja) 2019-08-28
CN107615878A (zh) 2018-01-19

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