JP2016092258A - Vehicle cooler and snow melting attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle cooler and snow melting attachment that are able to easily melt sticking snow without using a new heat source and controller.SOLUTION: A vehicle chiller comprises: a base block 32 to which a heating element 31 is attached; a pipe unit 39 comprising a tank 33 embedded in the opposite face 38 of the base block 32 to the attaching surface 37 for the heating element 31; and a plurality of pipes 34 connected such that they extend upright in parallel with each other on a side surface of the tank 33; a plurality of radiation fins 35 attached to a plurality of pipes 34 such that the pipes 34 extend through the radiation fins; and an air duct 40 attached to the base block 32 and defining a draft air duct 50 along the longitudinal direction of the tank 33 by surrounding the pipe 34 and radiation fins 35; and a snow melting attachment 10 attached to the inlet 41 of the air duct and configured to transmit the heat of the pipe unit 39 to the inlet 41 of the air duct.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicular cooler and a snow melting attachment used for cooling a control device or the like using a semiconductor element such as a power transistor or a thyristor of an electric vehicle.

As coolers used for cooling control devices using semiconductor elements such as power transistors and thyristors, for example, coolers using pipes as shown in Patent Document 1 and Patent Document 2 are known.
In the cooler described in Patent Document 1, a plurality of tanks having a large cross-sectional area are embedded in a base block (heat receiving block) that receives heat from a heating element such as a semiconductor element, and a plurality of tanks are provided on a side surface of an exposed portion of the tank. A thin pipe is erected and a plurality of fins are attached to the pipe, so that the heat of the heating element can be cooled by outside air.

In addition, in the cooler (cooling device) described in Patent Document 2, one end portions of a plurality of pipes through which a refrigerant flows are attached to the outer surface side of a base block (heat receiving plate), and the other end portions of the respective pipes. In the same manner as the cooler of Patent Document 1, the heat of the heating element can be cooled by outside air.
And in such a cooler, in many cases, by covering the periphery of the radiating fins with a ventilation duct, the outside air can be blown well into the ventilation duct when the vehicle is running so as to be cooled. In the cooler described in Patent Document 2, a constant cooling action can be ensured regardless of whether the vehicle is running or stopped by providing a blower fan that forcibly blows outside air in the ventilation duct. It is like that.

JP 2004-125381 A Japanese Patent No. 2759587

  By the way, in the vehicular cooler having the structure using the ventilation duct as described above, snow may adhere to the entrance of the ventilation duct when used in a cold region. The adhering snow is difficult to melt on the four sides in contact with the entrance of the ventilation duct, and if the amount of adhesion increases, it adheres in a plate shape that closes the entrance of the ventilation duct, and the outside air cannot be introduced and the function as a cooler is lost. There was a problem.

  In order to prevent this, it is sufficient to apply sufficient heat to remove snow adhering to the entrance of the ventilation duct, but providing a heat source reduces the cooling effect. In order to minimize the reduction of the cooling effect, it is necessary to separately control the heat generation only when the snow melts.

  The present invention has been made in view of such circumstances, and provides a vehicular cooler and a snow melting attachment that can easily melt snow adhering without using a new heat source or control device. With the goal.

  The vehicle cooler according to the present invention includes a base block on which a heating element is mounted, a tank embedded in a surface of the base block opposite to the mounting surface of the heating element and containing a refrigerant, and a side surface of the tank. A pipe unit comprising a plurality of pipes connected in a standing state, a plurality of heat dissipating fins attached to the pipes in a state of penetrating the pipes, and the pipes attached to the base block; A ventilation duct that surrounds the periphery of the heat dissipating fins and forms a ventilation path along the longitudinal direction of the tank, and a snow melting attachment that is attached to the entrance of the ventilation duct and that transfers heat of the pipe unit to the entrance of the ventilation duct. Is provided.

  The snow melting attachment transfers the heat of the pipe unit to the entrance of the ventilation duct, so that the snow attached to the entrance of the ventilation duct can be easily melted.

In the vehicular cooler according to the present invention, the snow melting attachment extends from the frame-like body toward the pipe along the ventilation direction of the ventilation duct. The frame-like body is disposed inside the entrance of the ventilation duct. The heat conduction plate is integrally formed.
Since the frame-like body and the heat conducting plate are integrally formed, the heat of the pipe unit can be efficiently transmitted to the entrance of the ventilation duct.

In the vehicular cooler according to the present invention, the tip of the heat conducting plate is inserted into the gap between the heat radiating fins.
By inserting the heat conduction plate through the gap between the heat dissipating fins, the heat of the high-temperature portion inside the vehicle cooler can be efficiently transferred to the frame-like body arranged at the entrance of the air duct, and the attached snow can be melted.

In the vehicular cooler according to the present invention, a position adjusting mechanism that supports the heat conducting plate so as to be movable in the length direction of the pipe is provided on the frame-like body.
By having the position adjusting mechanism, when the snow melting attachment is attached to the entrance of the ventilation duct, it can be easily attached even if the gap between the radiating fins varies.

  The snow melting attachment of the present invention is a snow melting attachment that is attached to a vehicle cooler that is surrounded by a ventilation duct through a heat radiating fin, a frame-like body that can be disposed inside an entrance of the ventilation duct, and the frame-like body. A heat conductive plate extending from the frame-like body along a direction orthogonal to the frame surface is integrally formed.

  This snow melting attachment can also be mounted on a vehicle cooler that has already been manufactured and used, and is effective for melting snow that adheres to the entrance of the ventilation duct and also improves heat dissipation.

  According to the present invention, the attached snow can be easily melted without using a new heat source or control device, and heat dissipation is improved by the snow melting attachment.

It is a front view which shows the cooler for vehicles which is embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG. It is a perspective view which shows what made a part of FIG. 1 a cross section. It is a perspective view which shows the snowmelt attachment shown in FIG. It is a perspective view which shows the state which decomposed | disassembled FIG.

Hereinafter, an embodiment of a vehicle cooler of the present invention will be described with reference to the drawings.
FIG. 1 shows a vehicle cooler 100 according to an embodiment of the present invention. In the vehicle cooler 100, a base block 32 to which the heating element 31 is mounted and a mounting surface 37 of the heating element 31 to be mounted on the base block 32 are embedded in a plurality of other surfaces (opposite surfaces) 38. A tank 33, a pipe unit 39 composed of a plurality of pipes 34 connected in a standing manner on the side of the tank 33, and a plurality of heat radiation fins attached to the pipes 34. 35, a ventilation duct 40 which is attached to the base block 32 and surrounds the periphery of the pipe 34 and the radiating fin 35 and forms the air passage 50 along the longitudinal direction of the tank 33, and the gap between the tips of the radiating fin 35. And a snow melting attachment 10 attached to the entrance 41 of the ventilation duct.

  The base block 32 is formed of a metal such as aluminum or copper having a high heat capacity and excellent thermal conductivity. In the base block 32, a heating element 31 such as an electronic component is mounted on a mounting surface 37 on the lower surface side, and a tank 33 is embedded in the other surface 38 of the mounting surface 37 of the heating element 31.

As shown in FIG. 2, the tank 33 is formed of a pipe having a circular cross section. A plurality of thin pipes 34 are provided upright on the side surface of the tank 33. As shown in FIG. 2, the pipes 34 are arranged in parallel (in one row) with a predetermined interval on the side surface (upper surface in FIG. 2) of each tank 33 to constitute a pipe unit 39. The tank 33 and the pipe 34 are joined together by brazing the internal space, and a coolant such as water or perfluorocarbon is accommodated therein.
The tank 33 and the pipe 34 are made of aluminum or copper.

  As shown in FIGS. 1 and 3, a plurality of tanks 33 to which a plurality of pipes 34 are attached are arranged in parallel on the base block 32, whereby the pipes 34 are arranged in a matrix. In the present embodiment, these pipes 34 are arranged in a staggered manner in a top view. Note that more than half of the tank 33 is embedded in the base block 32, and the base block 32 and the tank 33 are joined together by soldering or the like. For this reason, heat transfer between the base block 32 and the tank 33 is performed smoothly.

  In addition, a plurality of thin plate-like heat radiation fins 35 made of aluminum or copper having excellent thermal conductivity are attached to the pipe 34 so as to be skewered with the pipe 34 penetrating therethrough. The heat radiating fin 35 is provided with a plurality of through holes (not shown) formed by, for example, burring at predetermined positions on the thin plate, and the pipe 34 is press-fitted into these through holes to thereby radiate the fin 35. Are integrally attached to each pipe 34. In addition, the heat radiation fin 35 can be attached by expanding the pipe 34 inserted into the heat radiation fin 35.

As shown in FIG. 3, the ventilation duct 40 is formed by bending a plate material, and connects the upper end of a pair of side wall portions 42 with a top plate portion 43, and connects the cover member 44 to the base block 32. 2, and a lower connecting plate 46 that is supported in a state of penetrating the lower end of the pipe 34 and connected to the cover member 44 as shown in FIG. 2.
The shape of the ventilation duct 40 is not particularly limited as long as it is determined in relation to the heat radiating fins 35, the pipes 34, and the tank 33. However, in this embodiment, the overall shape of the ventilation duct is a rectangular parallelepiped with a horizontally long front shape. did.

  The snow melting attachment 10 has a pair of attachment members 14 and 15, fastening jigs 16 b and 16 c made of bolts and nuts for fixing them in a frame shape, and a fixing member 60 for fixing the ventilation duct 40. Yes. Each of the attachment members 14 and 15 is formed by bending a press-formed metal plate such as copper or aluminum alloy, and heat formed in a wide area between the pair of side plate portions 11a and the side plate portions 11a. The conductive plates 12 and 13 are formed.

  By fixing the belt-like side plate portions 11a of the pair of attachment members 14 and 15 with bolts 16b and nuts 16c, respectively, a frame-like body is formed by the side plate portion 11a and the base end portions 12a and 13a of the heat conducting plates 12 and 13. 11 is formed. Although the shape of the frame-like body 11 is not particularly limited, in the present embodiment, in accordance with the shape of the inner side surface of the inlet 41 of the ventilation duct, the side plate portion 11a and the base end portions 12a and 13a of the heat conducting plates 12 and 13 are used. It is molded into a rectangular shape when viewed from the front.

  The side plate portion 11a is formed with holes 16a and 16d through which the bolts 16b are inserted. For example, one of the side plate portions 11a of the attachment member 14 has a round hole 16d and the other side plate portion 11a has a round hole 16d. Is formed with a long hole 16a along the length direction. Similarly, the attachment member 15 is also formed with a round hole 16d in one side plate portion 11a and a long hole 16a along the length direction in the other side plate portion 11a. When the attachment member 14 and the attachment member 15 are faced to each other and the side plate portion 11a is overlapped, the round hole 16d and the long hole 16a of the side plate portion 11a communicate with each other. Further, the side plate portion 11a and the heat conducting plates 12 and 13 are formed so as to be orthogonal to each other, and the positions when the front end portions of the side plate portion 11a are overlapped and fixed with the bolts 16b and the nuts 16c of the long holes 16a. By sliding the side plate portion 11a within the length range, the position adjustment mechanism can adjust the interval in the direction in which the plate surfaces of the heat conducting plate 12 and the heat conducting plate 13 are orthogonal to each other.

The heat conductive plates 12 and 13 extending along the direction orthogonal to the rectangular frame surface surrounded by the edge of the frame-like body 11 are fitted to the pipe 34 from the tip portion opposite to the frame-like body 11. A plurality of cut grooves 18 are formed along the length direction of the heat conducting plates 12 and 13. The cut groove 18 has such a length that a plurality of pipes 34 arranged at intervals in the length direction of the tank 33 can be fitted, and even if it does not necessarily contact the pipe 34, the pipe 34 as a heat source can be connected. Are preferably as close as possible. Accordingly, the position and width of the cut groove 18 are set according to the position and thickness of the pipe 34. For example, in this embodiment, six substantially U-shaped cut grooves 18 each having an open front end portion are formed in parallel in each of the heat conducting plates 12 and 13, and the pipes 34 are arranged in a staggered manner. The lengths of the second and fifth cut grooves 18 from the end are shorter than the other cut grooves 18. As a result, the heat conduction plates 12 and 13 as a whole are set to closely fit each pipe 34 and each cut groove 18.
Further, the heat conduction plates 12 and 13 are connected to the base end portions 12a and 13a of the heat conduction plates 12 and 13 protruding outside the heat radiation fins 35 when inserted into the gaps between the heat radiation fins 35 and the ventilation duct 40. An insertion hole 19 is formed to be fixed to.

In the present embodiment, two heat conductive plates 12 and 13 are provided, and one of the heat conductive plates 12 is inserted into the gap between the radiating fins 35 at a position close to the top plate portion 43 of the ventilation duct 40 at the tip of the pipe 34, The other heat conducting plate 13 is configured to be inserted and attached to the gap between the heat dissipating fins 35 near the tank 33 at the base end portion of the pipe 34.
2 and 3, in order to show the fitting state of the pipe 34 and the cut groove 18, a part of the heat dissipating fins 35 is not shown.

  The fixing member 60 includes a spacer 30 formed in a rectangular shape with a metal flat plate and the mounting bolt 17. The spacer 30 is fixed to the ventilation duct 40 by a mounting bolt 17 inserted from the insertion hole 19 of the base end portion 13a of the one heat conducting plate 13.

In the vehicle cooler 100 of the present embodiment, the snow melting attachment 10 is mounted as follows.
First, the attachment member 14 and the attachment member 15 of the snow melting attachment 10 are separated into a single state. Next, the heat conduction plate 13 of one attachment member 15 is inserted from the heat radiating fin 35 at a position close to the base block 32, and the spacer 30 is interposed between the heat conduction plate 13 of the attachment member 15 and the inlet 41 of the ventilation duct. Temporarily fix the ventilation duct 40 with the mounting bolt 17. Thereafter, the heat conduction plate 12 of the other attachment member 14 is inserted through the heat radiating fin 35 at a position close to the top plate portion 43 of the ventilation duct 40, and the side plate portions 11a of the attachment member 14 and the attachment member 15 are overlapped with each other by bolts 16b. And temporarily tighten with the nut 16c. Further, the bolt 17 is finally tightened to adjust the distance between the heat conduction plate 12 of the attachment member 14 and the heat conduction plate 13 of the attachment member 15, and the bolt 16 b and the nut 16 c are finally tightened and attached.

In the vehicle cooler 100 configured as described above, the heat generated from the heating element 31 is transmitted to the base block 32, and is transmitted from the base block 32 to the snow melting attachment 10 through the pipe unit 39, and the snow melting attachment 10 has its heat. To melt the snow adhering to the entrance 41 of the ventilation duct.
Snow on the entrance 41 of the ventilation duct is snowed from the four inner side surfaces of the entrance 41 of the ventilation duct, which is a low temperature portion, and the accumulated snow becomes a single plate. When the frame-shaped body 11 of the snow melting attachment 10 has a shape along the inner surface of the inlet 41 of the ventilation duct as in this embodiment, the frame-shaped body 11 protrudes from the radiation fin 35 and the inner surface 4 of the inlet 41 of the ventilation duct. It is very effective because it can melt snow directly near the outer edge of the snow adhering to the edge.

  According to the vehicular cooler 100 of the present invention, it is possible to easily melt the attached snow using the heat inside the vehicular cooler 100 without using a new heat source or control device. Further, the snow melting attachment 10 of the present invention can be additionally mounted on a vehicle cooler that has already been manufactured and used, and in addition to the snow melting effect, there is also an effect of improving the heat dissipation of the snow melting attachment 10 itself.

  In addition, this invention is not limited to the thing of the structure of the said embodiment, In a detailed structure, it is possible to add a various change in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 10 ... Snow melting attachment 11 ... Frame-shaped body 11a ... Side plate part 12, 13 ... Heat conduction board 12a, 13a ... Thermal conduction board base end part 14 ... First attachment member 15 ... Second attachment member 16a ... Long hole 16d ... Round hole 18 ... Cut groove 33 ... Tank 34 ... Pipe 40 ... Ventilation duct 100 ... Vehicle cooler

Claims (5)

  A base block to which a heating element is mounted is connected to a tank that is embedded in a surface opposite to the mounting surface of the heating element of the base block and in which refrigerant is stored, and is erected in parallel to the side surface of the tank. A pipe unit comprising a plurality of pipes, a plurality of radiating fins attached to the pipes in a state of passing through the plurality of pipes, and surrounding the pipe and the radiating fins attached to the base block A vehicle comprising: a ventilation duct that forms a ventilation path along a longitudinal direction of a tank; and a snow melting attachment that is attached to an entrance of the ventilation duct and transmits heat of the pipe unit to the entrance of the ventilation duct. Cooler.   The snow melting attachment in which a frame-like body disposed inside the entrance of the ventilation duct and a heat conductive plate extending from the frame-like body toward the pipe along the ventilation direction of the ventilation duct are integrally formed. The vehicle cooler according to claim 1, further comprising:   The vehicle cooler according to claim 2, wherein a tip portion of the heat conducting plate is inserted into a gap between the heat radiating fins.   The vehicle cooler according to claim 2 or 3, wherein a position adjusting mechanism is provided on the frame-like body so as to support the heat conducting plate so as to be movable in the length direction of the pipe. A snow-melting attachment attached to a vehicle cooler surrounded by a ventilation duct with a radiating fin, and a frame-like body that can be arranged inside the entrance of the ventilation duct, and a direction perpendicular to the frame surface of the frame-like body A snow melting attachment, wherein a heat conduction plate extending from the frame body is integrally formed.

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