JP5707972B2 - Heat exchanger - Google Patents

Description

  The present invention relates to a heat exchanger in which cooling fins are provided in a housing. More specifically, the present invention relates to a heat exchanger that improves heat exchange efficiency by preventing a refrigerant from flowing into a gap between a tip of a cooling fin and a bottom surface of a housing.

  In recent years, electric vehicles such as hybrid vehicles and electric vehicles equipped with an electric motor as a drive source have become widespread. In such an electric vehicle, in addition to the electric motor, a chargeable / dischargeable battery, an inverter that converts DC power of the battery into three-phase AC power for driving the electric motor, and the like are mounted. The inverter performs power conversion by a switching operation of a semiconductor element such as an IGBT (insulated gate bipolar transistor), and the semiconductor element generates heat by the switching operation. Therefore, in order to remove this heat and prevent overheating of the semiconductor element (heating element), a heat exchanger is attached. And since an inverter is requested | required of higher output, the request | requirement of size reduction and weight reduction has become severe, Therefore The heat exchanger excellent in heat exchange efficiency is calculated | required.

  Here, as a heat exchanger for cooling the heating element, a cooling fin provided on a fin member (including a cooling fin and a fin base) fixed to the heating element is provided in the housing, and between the cooling fins What is comprised so that a refrigerant | coolant may flow into (the inside of a housing) is known. In this type of heat exchanger, since each component has tolerance, it is difficult to make the height of the cooling fin equal to the depth of the housing. As shown in FIG. 13, if the depth de of the housing 120 is shallower than the height H of the cooling fin 132 (H> de), the fin base 131 and the housing 120 are not in close contact with each other and the refrigerant leaks.

  Therefore, as shown in FIG. 14, the housing 120 is generally designed such that the depth de of the housing 120 is greater than the height H of the cooling fin 132 (H <de). However, in this case, a gap is formed between the front end of the cooling fin 132 and the bottom surface of the housing 120, so that the refrigerant easily flows into the gap and the amount of refrigerant flowing between the cooling fins 132 is reduced. If it does so, heat exchange between a refrigerant | coolant and a cooling fin will not be performed efficiently, but there existed a problem that heat exchange efficiency fell.

  Therefore, for example, in the laminated module described in Patent Document 1, a separate member having a spring property is provided between the tip of the cooling fin and the case so that the heat exchange efficiency is not lowered, and the cooling fin and the case are in close contact with each other. I am letting. This prevents a gap from being formed between the cooling fin and the case.

JP 2010-140969 A

However, in the technique described in Patent Document 1 described above, depending on the deformation amount of another member (which may include a cooling fin), the case (housing) and the intermediate plate (fin base) do not adhere to each other, and the refrigerant There was a risk of leakage.
In addition, since another member having a spring property is provided, there is a problem that the structure is complicated and the cost is increased.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a heat exchanger that can suppress the flow of refrigerant into the gap between the cooling fin tip and the housing with a simple configuration. With the goal.

One aspect of the present invention made to solve the above-described problems is a heat exchanger having cooling fins in a housing, which is disposed in a gap between the bottom surface of the housing and the cooling fins so as to intersect with a refrigerant flow direction. And a rod-shaped refrigerant flow inhibiting member that inhibits the flow of the refrigerant, and the refrigerant flow inhibiting member is press-fitted into a notch formed at least one of a front end of the cooling fin or a bottom of the housing, and a part thereof Is fixed so as to be positioned in a gap between the bottom surface of the housing and the tip of the cooling fin .

  In this heat exchanger, a rod-like refrigerant flow inhibiting member is press-fitted and fixed in a notch formed at least one of the tip of the cooling fin or the bottom of the housing. That is, the refrigerant flow inhibiting member is press-fitted into a notch formed at the tip of the cooling fin, is press-fitted into a notch formed at the bottom of the housing, or is formed at each of the tip of the cooling fin and the bottom of the housing. Either of which is pressed into each notch. As a result, the refrigerant flow inhibiting member is disposed and fixed in a gap existing between the tip of the cooling fin and the bottom surface of the housing. And since a refrigerant | coolant flow inhibition member is arrange | positioned so that it may cross | intersect the flow direction of a refrigerant | coolant, the refrigerant | coolant flow inhibition member prevents the flow of the refrigerant | coolant to the clearance gap between the front-end | tip of a cooling fin and the bottom face of a housing. This makes it difficult for the refrigerant to flow into the gap between the tip of the cooling fin and the bottom surface of the housing, and allows the refrigerant to flow between the cooling fins. As a result, heat exchange between the refrigerant and the cooling fin is efficiently performed, so that the heat exchange efficiency can be improved.

  In this heat exchanger, the rod-shaped refrigerant flow inhibiting member is press-fitted into a notch formed at least one of the tip of the cooling fin or the bottom of the housing, and is disposed in the gap between the bottom surface of the housing and the cooling fin. Yes. Therefore, the refrigerant can be prevented from flowing into the gap between the tip of the cooling fin and the bottom surface of the housing with a simple structure and at a low cost.

  Another aspect of the present invention made to solve the above problem is that in a heat exchanger having a cooling fin in a housing, the gap between the bottom surface of the housing and the cooling fin intersects the refrigerant flow direction. And has a tubular refrigerant flow inhibiting member that inhibits the flow of the refrigerant, and the refrigerant flow inhibiting member is sandwiched between the tip of the cooling fin and the bottom surface of the housing and is elastically deformed. It is fixed.

  In this heat exchanger, a tubular refrigerant flow inhibiting member is fixed in a state of being elastically deformed by being sandwiched between the tips of the cooling fins and the bottom surface of the housing. As a result, the refrigerant flow inhibiting member is disposed and fixed in a gap existing between the tip of the cooling fin and the bottom surface of the housing. And since a refrigerant | coolant flow inhibition member is arrange | positioned so that it may cross | intersect the flow direction of a refrigerant | coolant, the refrigerant | coolant flow inhibition member prevents the flow of the refrigerant | coolant to the clearance gap between the front-end | tip of a cooling fin and the bottom face of a housing. This makes it difficult for the refrigerant to flow into the gap between the tip of the cooling fin and the bottom surface of the housing, and allows the refrigerant to flow between the cooling fins. As a result, heat exchange between the refrigerant and the cooling fin is efficiently performed, so that the heat exchange efficiency can be improved.

  In this heat exchanger as well, the tubular refrigerant flow inhibiting member is elastically deformed and fixed between the tip of the cooling fin and the bottom surface of the housing, and is disposed in the gap between the bottom surface of the housing and the cooling fin. ing. Therefore, the refrigerant can be prevented from flowing into the gap between the tip of the cooling fin and the bottom surface of the housing with a simple structure and at a low cost.

  In the heat exchanger described above, the refrigerant flow inhibiting member may be disposed such that a distance between an end surface thereof and a side surface of the housing is smaller than a distance between the cooling fin and the side surface of the housing. desirable.

  By disposing the refrigerant flow inhibiting member in this way, the pressure loss at the interval between the end face of the refrigerant flow inhibiting member and the side surface of the housing becomes larger than the pressure loss at the interval between the cooling fin and the side surface of the housing. It becomes difficult for the refrigerant to flow to the end of the member. Thereby, also in the edge part of a heat exchanger, a refrigerant | coolant can be poured on the cooling fin side (between cooling fins). Therefore, the heat exchange between the refrigerant and the cooling fin is performed more efficiently, so that the heat exchange efficiency can be further improved.

  In the heat exchanger described above, it is desirable that the refrigerant flow inhibiting member includes an elastic member that can be expanded and contracted in at least a part of its longitudinal direction and that inhibits the flow of the refrigerant.

  With such a configuration, the end of the refrigerant flow inhibiting member can be brought into close contact with the side surface of the housing. As a result, there is no gap between the end of the refrigerant flow inhibiting member and the side surface of the housing, so that the refrigerant does not flow to the end of the refrigerant flow inhibiting member. As a result, since the refrigerant can flow between the cooling fins, the heat exchange between the refrigerant and the cooling fins is performed more efficiently, so that the heat exchange efficiency can be further improved.

  According to the heat exchanger according to the present invention, as described above, it is possible to suppress the flow of the refrigerant into the gap between the cooling fin tip and the housing with a simple configuration at low cost.

It is a perspective view which shows schematic structure of the heat exchanger which concerns on 1st Embodiment. It is a side view of the heat exchanger shown in FIG. It is a figure which shows typically the inside of a housing in the arrangement position vicinity of a refrigerant | coolant flow inhibition member. It is a figure which shows typically the inside of a housing seen from the flow direction of a refrigerant | coolant. It is a figure which shows typically the inside of the housing in the heat exchanger which concerns on a 1st modification. It is a top view which shows the modification of a refrigerant | coolant flow inhibition member. It is a perspective view which shows schematic structure of the heat exchanger which concerns on a 2nd modification. It is a side view of the heat exchanger shown in FIG. It is a perspective view which shows schematic structure of the heat exchanger which concerns on 2nd Embodiment. It is a side view of the heat exchanger shown in FIG. It is a figure which shows typically the inside of a housing in the arrangement position vicinity of a refrigerant | coolant flow inhibition member. It is a figure which shows typically the inside of a housing seen from the flow direction of a refrigerant | coolant. It is a figure which shows the state which the clearance gap produced between the fin base and the housing by component tolerance. It is a figure which shows the state which the clearance gap produced between the cooling fin and the bottom face of the housing.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the heat exchanger according to the present invention will be described below in detail with reference to the drawings. Here, the heat exchanger used in order to cool the semiconductor element of the inverter apparatus in which size reduction and high cooling performance are requested | required is illustrated. The heat exchanger according to the following two embodiments cools a semiconductor element that generates heat by exchanging heat with a refrigerant (for example, cooling water) flowing inside.

[First Embodiment]
First, the heat exchanger which concerns on 1st Embodiment is demonstrated, referring FIGS. 1-4. FIG. 1 is a perspective view showing a schematic configuration of the heat exchanger according to the first embodiment. FIG. 2 is a side view of the heat exchanger shown in FIG. FIG. 3 is a diagram schematically showing the inside of the housing in the vicinity of the arrangement position of the refrigerant flow inhibiting member. FIG. 4 is a diagram schematically showing the inside of the housing as seen from the flow direction of the refrigerant. In FIGS. 1 and 2, the side wall of the housing is not shown in order to show the inside of the heat exchanger.

  As shown in FIGS. 1 and 2, the heat exchanger 10 according to the first embodiment includes a housing 20, a fin member 30, and a refrigerant flow inhibition member 40. And the semiconductor element 11 which is a heat generating body is mounted on the upper surface of the fin member 30 via the heat spreader 12.

  The housing 20 is formed by forming a material made of an aluminum alloy into a rectangular parallelepiped shape having an upper surface opened by, for example, pressing. The housing 20 is provided with an inlet 21 for introducing the refrigerant into the interior and an outlet 22 for discharging the refrigerant to the outside. The fin member 30 is attached to the housing 20 so as to close the opening of the housing 20. Thereby, the housing 20 and the fin base 31 constitute a case of the heat exchanger 10, and the cooling fins 32 are accommodated inside the housing 20.

  As shown in FIGS. 1 and 2, the fin member 30 includes a plurality of cooling fins 32 and a fin base 31 provided with the cooling fins 32. The fin member 30 is formed by extruding an aluminum alloy material, for example. The plurality of cooling fins 32 are provided on the fin base 31 in parallel with a predetermined interval, and the refrigerant flows between the cooling fins 32 (both ends are between the cooling fin and the housing side wall). It is a passage. Thereby, the refrigerant introduced into the housing 20 through the introduction port 21 flows between the cooling fins 32 and is discharged to the outside through the discharge port 22.

  Here, the depth de of the housing 20 is made larger than the height H of the cooling fin 32 (de> H). Therefore, in the heat exchanger 10, as shown in FIG. 2, a gap S is formed between the tips of the cooling fins 32 and the bottom surface of the housing 20 in a state where the fin member 30 is assembled to the housing 20.

  The refrigerant flow blocking member 40 is a rod-shaped member that blocks the flow of the refrigerant. In the present embodiment, a round bar is used as the refrigerant flow inhibiting member 40, but it is not limited to a round bar and may be any continuous body that can be press-fitted into a notch 33 described later, such as a hollow pipe or a square bar. Can also be used. In the present embodiment, two refrigerant flow inhibition members 40 are provided, but at least one refrigerant flow inhibition member 40 may be provided.

  A notch 33 is provided at the tip of the cooling fin 32. A refrigerant flow inhibiting member 40 is press-fitted into the notch 32. The notches 33 are formed for the respective cooling fins 32, and the notches 32 are provided on the same straight line in the direction orthogonal to the refrigerant flow direction. Thereby, the rod-like refrigerant flow inhibiting member 40 can be easily press-fitted into each cooling fin 32 and can be arranged in a direction orthogonal to the refrigerant flow direction.

  Here, as shown in FIG. 3, the width Kw of the notch 33 is equal to or less than the diameter D of the refrigerant flow inhibiting member 40 (Kw ≦ D). Further, the depth Kd of the notch 33 is larger than the radius D / 2 of the refrigerant flow inhibiting member 40 (Kd> D / 2). By setting the notch 33 in this way, the refrigerant flow inhibiting member 40 is surely press-fitted into the notch 33 and the refrigerant flow inhibiting member is inserted into the gap S between the tip of the cooling fin 32 and the bottom surface of the housing 20. 40 can be arranged. As a result, the refrigerant is prevented from flowing into the gap S between the front end of the cooling fin 32 and the bottom surface of the housing 20, and the refrigerant hardly flows into the gap S and flows between the cooling fins.

  The refrigerant flow inhibiting member 40 provided in the gap between the tip of the cooling fin 32 and the bottom surface of the housing 20 in this way has an interval Ie between the end surface 40e and the side surface of the housing 20 as shown in FIG. The cooling fin 32 and the side surface of the housing 20 are arranged so as to be smaller than the interval If (Ie <If). That is, the refrigerant flow inhibiting member 40 has an end surface 40e on the outer side of the cooling fin 32e that is positioned on the outermost side of the cooling fins 32 (note that the sign of the cooling fin may be simply expressed as “32”), That is, it is located between the cooling fin 32 e and the side surface of the housing 20. As a result, the pressure loss at the distance Ie between the end surface 40e of the refrigerant flow inhibiting member 40 and the side surface of the housing 20 becomes larger than the pressure loss at the distance If between the cooling fin 32e and the side surface of the housing 20, so that the refrigerant flow inhibiting member 40 The refrigerant is difficult to flow to the end. Therefore, the refrigerant also flows on the cooling fin side (between the cooling fins) at both ends of the heat exchanger 10.

  Such a heat exchanger 10 is manufactured as follows. First, the refrigerant flow inhibiting member 40 is disposed at a predetermined position on the bottom of the housing 20. Next, the fin member 30 is pushed downward from right above the refrigerant flow inhibition member 40 arranged in such a manner, and the refrigerant flow inhibition member 40 is press-fitted into the notch 33 and assembled to the housing 20. At this time, since the fin member 30 stops when the fin base 31 comes into contact with the housing 20, the housing 20 and the fin base 31 can be brought into close contact with each other.

  In the heat exchanger 10 manufactured as described above, the rod-like refrigerant flow inhibition member 40 is press-fitted into the notch 33 formed at the tip of the cooling fin 32, and the gap between the bottom surface of the housing 20 and the cooling fin 32 is pressed. The simple structure disposed in S can effectively prevent the refrigerant from flowing into the gap S. Moreover, since it is such a simple structure, the heat exchanger 10 can be manufactured cheaply.

  Then, operation | movement of the heat exchanger 10 which has such a structure is demonstrated easily. As shown in FIGS. 1 and 2, in the heat exchanger 10, the semiconductor element 11 is attached to the fin member 30 (fin base 31) via the heat spreader 12. In FIG. 1 and FIG. 2, one semiconductor element 11 is placed on the heat spreader 12, but a plurality of semiconductor elements 11 are placed depending on the size of the heat exchanger 10 or the semiconductor element 11. It may be arranged.

Then, the refrigerant is introduced from the introduction port 21 into the heat exchanger 10. The refrigerant introduced into the heat exchanger 10 flows along the refrigerant passage formed by the cooling fins 32 and is discharged from the discharge port 22 to the outside.
At this time, the semiconductor element 11, which is a heating element, transmits the heat generated by itself to the heat spreader 12. The heat transferred to the heat spreader 12 is diffused there and transferred to the cooling fins 32 through the fin base 31. And heat exchange is performed between the cooling fin 32 and a refrigerant | coolant.

  Here, in the heat exchanger 10, the refrigerant flow blocking member 40 prevents the refrigerant from flowing into the gap S between the tip of the cooling fin 32 and the bottom surface of the housing 20. Therefore, the refrigerant does not flow into the gap S but flows between the cooling fins 32 and between the cooling fins 32 e and the side surface (side wall) of the housing 20. Thereby, since heat exchange between the refrigerant and the cooling fins 32 is efficiently performed, the heat exchange efficiency is improved. Specifically, the heat transfer rate could be improved by about 10%. As a result, the semiconductor element 11 is effectively cooled by the heat exchanger 10.

  As described above in detail, according to the heat exchanger 10 according to the first embodiment, the rod-like refrigerant flow inhibiting member 40 is press-fitted into the notch 33 formed at the tip of the cooling fin 32, and the housing It arrange | positions in the clearance gap S between the bottom face of 20 and the cooling fin 32 so that the flow direction of a refrigerant | coolant may be crossed. Therefore, the refrigerant flow blocking member 40 prevents the refrigerant from flowing into the gap S, and the refrigerant flows between the cooling fins 32 and between the cooling fins 32 e and the side surface of the housing 20. Therefore, even if there is a gap S, heat exchange between the refrigerant and the cooling fins 32 is efficiently performed, so that the heat exchange efficiency can be improved.

  Here, a modification of the heat exchanger according to the first embodiment will be described with reference to FIGS. FIG. 5 is a view schematically showing the inside of the housing in the heat exchanger according to the first modification. FIG. 6 is a plan view showing a modification of the refrigerant flow inhibiting member. FIG. 7 is a perspective view illustrating a schematic configuration of a heat exchanger according to a second modification. FIG. 8 is a side view of the heat exchanger shown in FIG. 7 and 8 are drawings corresponding to FIGS. 1 and 2, and the side walls of the housing are not shown in order to show the inside of the heat exchanger as in FIGS. 1 and 2.

The basic structure of the heat exchanger according to the first modification is substantially the same as that of the heat exchanger 10, but the structure of the refrigerant flow inhibiting member is different.
That is, as shown in FIG. 5, in the heat exchanger 10a, the refrigerant flow inhibiting member 41 includes elastic members 41a at both ends. The elastic member 41a can be expanded and contracted in the longitudinal direction of the refrigerant flow inhibiting member 41 and inhibits the flow of the refrigerant. In FIG. 5, the refrigerant flow inhibiting member 41 provided with the elastic member 41 a at both ends is shown, but at least one elastic member 41 a may be provided in the longitudinal direction of the refrigerant flow inhibiting member 41. In addition, as an elastic member, resin, rubber | gum, etc. which have corrosion resistance with respect to a refrigerant | coolant can be used.

  Thereby, in the heat exchanger 10a, the both ends of the refrigerant | coolant flow inhibition member 41 can be stuck to the side surface of the housing 20. Accordingly, there is no gap between the end surface of the refrigerant flow inhibiting member 41 and the side surface of the housing 20, so that the refrigerant does not flow to the end of the refrigerant flow inhibiting member 41. As a result, since the refrigerant flows between the cooling fins 32 and between the cooling fins 32e and the side surface (side wall) of the housing 20, heat exchange between the refrigerant and the cooling fins 32 is performed more efficiently. Further, the heat exchange efficiency can be further improved.

In addition, as shown in FIG. 6, instead of the elastic member 41a, a bellows-like plate member 42a may be provided, and rod-like members 42b and 42b may be provided at both ends thereof to constitute the refrigerant flow inhibiting member 42. Such a refrigerant flow inhibiting member 42 is set in the housing 20 in a state where the bellows-like plate member 42a is contracted, and is arranged at the bottom of the housing 20 in a state where the bellows-like plate member 42a stands (a state where no refrigerant passes). do it. In FIG. 6, the rod-like members 42b and 42b are provided on both sides of the bellows-like plate material 42a to constitute the refrigerant flow inhibiting member. However, the rod-like member 42b is provided only on one side of the bellows-like plate material 42a and the refrigerant flow. An inhibiting member may be configured.
And even with a heat exchanger provided with such a refrigerant flow inhibiting member 42, the heat exchange efficiency can be improved.

The heat exchanger according to the second modification has the same basic configuration as that of the heat exchanger 10, but is different in the formation position of the notch for press-fitting the refrigerant flow inhibiting member.
That is, as shown in FIGS. 7 and 8, in the heat exchanger 10 b, a notch 23 for press-fitting the refrigerant flow inhibiting member 40 is formed at the bottom of the housing 20. And the notch is not formed in the front-end | tip of the cooling fin 32. FIG. In the heat exchanger 10b, notches are not provided at the tips of the cooling fins 32, but notches 33 may be provided at the tips of the cooling fins 32. That is, the notch can be provided at both the front end of the cooling fin 32 and the bottom of the housing 20.

  In such a heat exchanger 10b, the rod-like refrigerant flow inhibition member 40 is press-fitted into a notch 23 formed in the bottom of the housing 20, and the refrigerant flows into the gap S between the bottom surface of the housing 20 and the cooling fins 32. It is arranged so as to intersect the direction. Therefore, the refrigerant flow blocking member 40 prevents the refrigerant from flowing into the gap S, and the refrigerant flows between the cooling fins. Therefore, even if there is a gap S, heat exchange between the refrigerant and the cooling fins 32 is efficiently performed, so that the heat exchange efficiency can be improved.

[Second Embodiment]
Next, the heat exchanger which concerns on 2nd Embodiment is demonstrated, referring FIGS. 9-12. FIG. 9 is a perspective view showing a schematic configuration of a heat exchanger according to the second embodiment. FIG. 10 is a side view of the heat exchanger shown in FIG. FIG. 11 is a diagram schematically showing the inside of the housing in the vicinity of the position where the refrigerant flow inhibiting member is disposed. FIG. 12 is a diagram schematically showing the inside of the housing as seen from the flow direction of the refrigerant. 9 and 10, the side wall of the housing is not shown in order to show the inside of the heat exchanger.

  The heat exchanger according to the second embodiment has substantially the same configuration as that of the first embodiment, but is not provided with a notch for press-fitting the refrigerant flow inhibition member, and the configuration of the refrigerant flow inhibition member. Is different. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  As shown in FIGS. 9 and 10, the heat exchanger 50 according to the second embodiment includes a housing 20, a fin member 30, and a refrigerant flow inhibition member 60. And the semiconductor element 11 which is a heat generating body is mounted on the upper surface of the fin member 30 via the heat spreader 12. The fin member 30 is basically the same as that of the first embodiment, but the cooling fin 32 is not formed with a notch in this embodiment.

  The refrigerant flow inhibiting member 60 is a tubular member that inhibits the flow of the refrigerant. The refrigerant flow inhibiting member 60 is disposed in a direction orthogonal to the refrigerant flow direction, and is elastically deformed by being sandwiched between the cooling fins 32 and the bottom surface of the housing 20. As a result, as shown in FIG. 11, the refrigerant is prevented from flowing into the gap S between the tip of the cooling fin 32 and the bottom of the housing 20, and the refrigerant hardly flows into the gap S and flows between the cooling fins. ing. In the present embodiment, two refrigerant flow inhibition members 60 are provided, but at least one refrigerant flow inhibition member 60 may be provided.

  Then, as shown in FIG. 12, the coolant flow inhibiting member 60 disposed in the elastic deformation region in the gap S between the tip of the cooling fin 32 and the bottom surface of the housing 20 in this manner is the end surface 60e. And the side face of the housing 20 are arranged so that the distance If between the cooling fin 32 and the side face of the housing 20 is smaller (Ie <If). That is, the end surface 60 e of the refrigerant flow inhibiting member 60 is located outside the cooling fin 32 e located on the outermost side of the cooling fins 32, that is, between the cooling fin 32 e and the side surface of the housing 20. As a result, the pressure loss at the interval Ie between the end surface 60e of the refrigerant flow inhibiting member 60 and the side surface of the housing 20 becomes larger than the pressure loss at the interval If between the cooling fin 32e and the side surface of the housing 20, so that the refrigerant flow inhibiting member 40 The refrigerant is difficult to flow to the end. Therefore, the refrigerant flows on the cooling fin side (between the cooling fins) also at both ends of the heat exchanger 50.

  Such a heat exchanger 50 is manufactured as follows. First, the refrigerant flow inhibiting member 60 is disposed at a predetermined position on the bottom surface of the housing 20. Next, the fin member 30 is pushed downward from above the refrigerant flow inhibition member 60 arranged in this manner, and the refrigerant flow inhibition member 60 is assembled to the housing 20 while being deformed. At this time, since the fin member 30 stops when the fin base 31 comes into contact with the housing 20, the housing 20 and the fin base 31 can be brought into close contact with each other.

  In the heat exchanger 50 manufactured as described above, the tubular refrigerant flow inhibition member 60 is pressed and elastically deformed at the tip of the cooling fin 32 to form a gap S between the bottom surface of the housing 20 and the cooling fin 32. With the simple structure arranged, the refrigerant can be effectively prevented from flowing into the gap S. Moreover, since it is such a simple structure, the heat exchanger 50 can be manufactured cheaply.

  Even in the heat exchanger 50 having such a configuration, the heat exchanger 50 operates in the same manner as in the first embodiment, and the refrigerant flow inhibiting member 60 moves the gap S between the tip of the cooling fin 32 and the bottom surface of the housing 20. Refrigerant flow is blocked. Therefore, the refrigerant does not flow into the gap S but flows between the cooling fins 32 and between the cooling fins 32 e and the side surface (side wall) of the housing 20. Thereby, since heat exchange between the refrigerant and the cooling fins 32 is efficiently performed, the heat exchange efficiency is improved, and the semiconductor element 11 is effectively cooled by the heat exchanger 50.

  As described above, according to the heat exchanger 50 according to the second embodiment, the clearance between the bottom surface of the housing 20 and the cooling fins 32 is elastically deformed in the tubular refrigerant flow inhibiting member 60. In S, it arrange | positions so that the flow direction of a refrigerant | coolant may be crossed. Therefore, the refrigerant flow blocking member 60 prevents the refrigerant from flowing into the gap S, and the refrigerant flows between the cooling fins 32 and between the cooling fins 32e and the side surface of the housing 20. Therefore, even if there is a gap S, heat exchange between the refrigerant and the cooling fins 32 is efficiently performed, so that the heat exchange efficiency can be improved.

  It should be noted that the above-described embodiment is merely an example and does not limit the present invention in any way, and various improvements and modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the two refrigerant flow inhibiting members 40 (60) are arranged so that a gap is formed between the side surfaces of the housing 20 at both ends. You may arrange | position so that a clearance gap may arise (it is stuck to the other end). With such an arrangement, the refrigerant can flow to the cooling fin side (between the cooling fins) at both ends of the heat exchanger 10 (50).

  In the above embodiment, the cooling fins are block fins arranged in parallel, but the cooling fins are not limited to this, for example, a large number of rod fins arranged alternately, corrugated fins, etc. It may be.

  Furthermore, in the above-described embodiment, the case where the present invention is applied to the semiconductor element 11 has been described. However, the present invention is not limited to this, and the present invention is applied to various heating elements that require a cooling effect. be able to.

DESCRIPTION OF SYMBOLS 10 Heat exchanger 11 Semiconductor element 20 Housing 21 Inlet port 22 Outlet port 30 Fin member 31 Fin base 32 Cooling fin 33 Notch 40 Refrigerant flow inhibition member 40e End surface 50 Heat exchanger 60 Refrigerant flow inhibition member D Diameter de Depth of housing H Fin height S Clearance

Claims (4)

In a heat exchanger with cooling fins in the housing,
A rod-shaped refrigerant flow inhibiting member that is disposed in the gap between the bottom surface of the housing and the cooling fin so as to intersect with the flow direction of the refrigerant and inhibits the flow of the refrigerant;
The refrigerant flow inhibiting member is press-fitted into a notch formed in at least one of the front end of the cooling fin or the bottom of the housing, and a part thereof is positioned in a gap between the bottom surface of the housing and the front end of the cooling fin. The heat exchanger is characterized by being fixed to. In a heat exchanger with cooling fins in the housing,
A cylindrical refrigerant flow inhibiting member disposed in a gap between the bottom surface of the housing and the cooling fin so as to intersect with a flow direction of the refrigerant and obstructing a refrigerant flow;
The refrigerant flow blocking member is fixed in a state of being elastically deformed by being sandwiched between the tips of the cooling fins and the bottom surface of the housing. The heat exchanger according to claim 1 or claim 2,
The heat exchanger according to claim 1, wherein the refrigerant flow blocking member is disposed such that a distance between an end surface thereof and a side surface of the housing is smaller than a distance between the cooling fin and the side surface of the housing. The heat exchanger according to any one of claims 1 to 3,
The heat exchanger according to claim 1, wherein the refrigerant flow inhibiting member includes an elastic member that can be expanded and contracted in at least a part of a longitudinal direction thereof and inhibits a flow of the refrigerant.

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