JP2015060842A - Exothermic body cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-assemble exothermic body cooling device when providing a water cutoff net on the leeward side of a cooling heat exchanger.SOLUTION: The exothermic body cooling device for cooling an exothermic body by a cooling airflow includes: a housing of a substantially cylindrical shape with a swollen part, through which the airflow passes; a cooling heat exchanger, installed inside the housing, for cooling the airflow; a blocking member, installed inside the housing, for blocking the swollen part; and a splash prevention net installed on the downstream side of the cooling heat exchanger. The blocking member and the splash prevention net are integrally structured.

Description

  The present invention relates to a heating element cooling device that cools a heating element, and more particularly to a heating element cooling device that cools a battery used in a hybrid vehicle or an electric vehicle.

  In recent years, hybrid vehicles and electric vehicles have come into wide use in the field of automobiles. At that time, a battery having a larger capacity than before is used, and the amount of heat generated is much larger than that of a conventional automobile.

  On the other hand, in order to secure a living space inside the automobile, the battery installation place is often a narrow and limited place such as the lower part of the trunk room or under the seat floor.

  Under such circumstances, how to efficiently cool the battery has become an extremely important problem in terms of ensuring the performance of the entire automobile such as driving performance, comfort and safety.

  Here, since the heating element cooling device for cooling the heating element such as a battery is also often arranged in a narrow and restricted place, the cooling heat exchanger built in the heating element cooling device is also provided. A small one is used. On the other hand, a heating element such as a battery is cooled when its surface comes into contact with cooled air. Here, in general, the number of heating elements is large and the surface shape is complicated, and the heating element cooling device is required to have a large blowing capacity. As a result, the wind speed of the air flow passing through the cooling heat exchanger becomes high, and even if a cooling heat exchanger with a hydrophilic surface treatment is used, it is more careful with respect to the flying water of the condensed water. It is necessary to consider.

  In particular, it is an important factor for long-time operation that such condensed water is not scattered by a blower or the like into a heating element, an electric circuit, an electronic circuit, or the like.

  For example, as a method for preventing scattering of condensed water generated on the surface of the evaporator, Patent Document 1 discloses that water droplets scattered by a water stop net provided on the lee side of the evaporator disposed in the casing of the cooler unit. A technical idea for catching and preventing scattering to the end is disclosed.

  As described above, in the heating element cooling apparatus, providing the water stop net on the lee side of the cooling heat exchanger has a relatively simple structure, and further has an advantage of preventing scattering of water droplets in the downstream direction.

  By the way, in the cooling unit as shown in Patent Document 1, since the refrigerant expansion means is disposed in the air flow path, the airflow resistance is likely to increase and it is difficult to obtain a large air volume. In this respect, in the cooling unit shown in Patent Document 2, since the expansion means is disposed on the side surface side of the cooling heat exchanger and outside the air flow path, an increase in ventilation resistance can be suppressed, and a large air flow It has a configuration suitable for a heating element cooling device that requires capacity.

Japanese Utility Model Publication No. 60-130117 Japanese Patent Laid-Open No. 11-091338

  However, when the expansion means is disposed outside the air flow path, it is necessary to prevent the air flow from bypassing the cooling heat exchanger. In this regard, in Patent Document 2, the space for accommodating the expansion means and the space for accommodating the heat exchanger for cooling are partitioned and dealt with, and in particular, the air flow path so as to surround the entire circumference of the heat exchanger for cooling. It is important to configure.

  The heating element cooling device can also be used in the case where the expansion means is disposed outside the air flow path that passes through the cooling heat exchanger, and the water stop net is provided on the leeward side of the cooling heat exchanger. There is a problem that it is necessary to configure the air flow path so as to surround the entire circumference of the exchanger, and the assembly is complicated.

  Therefore, in order to solve the above problem, the present invention is an assembly method in which the expansion means is disposed outside the air flow path and a water stop net (fly prevention net) is provided on the leeward side of the cooling heat exchanger. It has been an object to provide a heating element cooling device that facilitates the above.

In order to solve such a problem, the present invention is a heating element cooling device for cooling a heating element with an air flow,
A substantially cylindrical housing through which the air flow passes and having a bulging portion;
A cooling heat exchanger installed inside the housing for cooling the air flow;
A closing member installed inside the housing and closing the bulging portion;
-It has installed in the downstream of the said heat exchanger for cooling, and the jumping prevention net | network comprised integrally with the said obstruction | occlusion member is characterized by the above-mentioned.

  In addition, the closing member is disposed below the cooling heat exchanger and is provided with a drainage groove through which water flowing out from the flying water prevention net flows.

  Furthermore, the flying water prevention net is characterized in that it is installed at an angle so that at least the lower part is separated from the cooling heat exchanger.

  The heating element cooling device according to the present invention includes a housing having a bulging portion, and the bulging portion of the housing can be positioned outside the air flow path by disposing the expansion means in the bulging portion. Since the closing member and the water splash prevention net are integrally configured, the assembly of the heating element cooling device can be facilitated by reducing the assembly process.

It is sectional drawing of the heat generating body cooling system incorporating the heat generating body cooling device which concerns on the 1st Embodiment of this invention. It is a perspective view of the heat generating body cooling device concerning a 1st embodiment of the present invention. It is a perspective view in the state where a part of member of a heating element cooling device concerning a 1st embodiment of the present invention was removed. It is a perspective view which shows the obstruction | occlusion member and water splash prevention net which concern on the 1st Embodiment of this invention. It is sectional drawing which shows an example of the part to which a closure member is attached about the housing of the heat generating body cooling device which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the manufacture process of the obstruction | occlusion member and flying water prevention net | network of the heat generating body cooling device which concerns on the 1st Embodiment of this invention. It is a perspective view of the heat generating body cooling device which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the obstruction | occlusion member and water splash prevention net which concern on the 2nd Embodiment of this invention.

  Hereinafter, with reference to drawings, the heating element cooling device concerning the embodiment of the present invention is explained. In the following, the range necessary for the description for achieving the object of the present invention is schematically shown, and the range necessary for the description of the relevant part of the present invention will be mainly described. According to a known technique.

  FIG. 1 is a perspective view of a heating element cooling system 100 incorporating a heating element cooling device 1 according to the first embodiment of the present invention.

  The heating element cooling system 100 includes a substantially sealed module case 3, a heating element 5 incorporated in the module case 3, a heating element cooling device 1 for cooling the heating element, and a blower 4 for blowing the cooled air. As shown by the arrows in the figure, the air cooled by the heating element cooling device 1 is directed to the heating element 5 by the blower 4 to cool the heating element 5, and then the air flow is changed to the heating element cooling device. 1 to reflux.

  FIG. 2 is a perspective view of the heating element cooling device 1 according to the first embodiment of the present invention. The heating element cooling device 1 includes a thin-walled cylindrical housing 10 and a cooling heat exchanger 11 such as an evaporator built in the housing 10, and the air flow cooled by the cooling heat exchanger 11 is sent to the blower 4. Circulates in the module case 3.

  Further, the housing 10 is provided with a bulging portion 12 that bulges outward in part, and the internal space of the bulging portion 12 is connected to the cooling heat exchanger 11 by piping or the like. Expansion means (expansion valve 13) is installed. For this reason, the expansion valve 13 will be arrange | positioned on the outer side of an air flow, and the raise of ventilation resistance will be suppressed.

  The housing 10 has a structure that is divided into an upper part 10 a that does not have the bulging part 12 and a lower part 10 b that has the bulging part 12. The divided members are joined by a well-known technique such as fitting or latching.

  In addition, the material of the housing 10 may be any material that can be processed into a thin wall, such as resin or metal, and may be appropriately selected from the viewpoints of use conditions, processing method, cost, and the like.

  A closing member 14 that closes the bulging portion 12 is inserted below the cooling heat exchanger 11, and a splash prevention net 15 is provided on the leeward side of the cooling heat exchanger 11. Here, the blocking member 14 and the water splash prevention net 15 are integrally configured.

  A part of the closing member 14 is provided with a drain groove 16 having a substantially U-shaped cross section for draining water droplets. In addition, about the drain groove 16, it shall have the inclination that a water droplet flows from the back side of this figure to this side.

  FIG. 3 is a perspective view of the heating element cooling device 1 according to the first embodiment of the present invention with the closing member 14 and the water splash prevention net 15 removed from the housing 10. However, in the figure, in order to display the expansion valve 13 with emphasis, a part of the vicinity of the lower center portion is displayed in a transparent manner. As shown in the figure, an expansion valve 13 connected to the cooling heat exchanger 11 by piping or the like is installed in the bulging portion 12.

  The expansion valve 13 is for decompressing and vaporizing high-pressure liquid refrigerant fed from a compressor (not shown) and supplying it to the cooling heat exchanger 11 and is provided in the vicinity of the cooling heat exchanger 11. Is customary.

  FIG. 4 is a perspective view showing the closing member 14 and the splash prevention net 15 according to the first embodiment of the present invention. In order to show the configuration at the back, a part of the configuration is cut and displayed.

  Here, the closing member 14 is configured to close the opening portion 30 except for the passage portion of the piping to the expansion valve 13 among the opening portions 30 communicating with the internal space of the bulging portion 12. The flying water preventing net 15 covers the cross section of the air flow path of the housing 10 as much as possible, and the blocking member 14 and the flying water preventing net 15 are integrally formed. Further, a drainage groove 16 is provided on the side of the closing member 14 close to the water prevention net 15.

  The flying water preventing net 15 is configured in a lattice structure, and has an air gap through which an air flow can pass and in which water droplets separated from the cooling heat exchanger 11 are captured. Note that this shape is not limited to horizontal and vertical grid shapes, and may be a vertical interdigital shape, a rhombus lattice shape, or the like, and is appropriately selected according to the air flow rate, wind speed, and water drop detachment. That's fine.

  In addition, the material of the integrally configured member of the blocking member 14 and the water splash preventing net 15 is preferably made of resin for ease of processing or the like, but is not limited thereto, and may be made of metal, Alternatively, a different material such as a fibrous material may be used. What is necessary is just to select suitably from use conditions, a processing method, cost, etc.

  The flying water prevention net 15 is configured to be inclined so that the lower part is separated from the cooling heat exchanger 1 when the assembly is completed. The shape may be formed at the time of manufacturing the integral member of the water splash preventing net 15 and the closing member 14, or may be formed at the time of assembly as will be described later.

  FIG. 5 is a cross-sectional view showing an example of the structure of the portion where the closing member 14 is attached to the heating element cooling device 1 housing 10, and the closed edge 17 provided in the opening 30 of the housing 10 is closed. The member 14 is placed. In addition, the assembly method of the closure member 14 and the housing 10 is not limited to this, For example, the method by screwing or a clasp may be used.

  FIG. 6 is a cross-sectional view showing a manufacturing process of the closing member 14 and the water splash prevention net 15 of the heating element cooling device 1. The integrated member composed of the water splash prevention net 15, the blocking member 14, and the drainage groove 16 may be formed as a member having a final shape. However, as shown in FIG. In use, the member shape may be formed by bending a portion corresponding to the water splash prevention net 15. Here, in order to facilitate the folding, it is desirable to reduce the thickness of the bent portion or to make a cut.

  Next, a method for assembling the heating element cooling device 1 having such a configuration will be described. The heating element cooling device 1 starts assembling in a state where the housing 10 is divided into two parts, a lower part 10 b having a bulging part 12 and an upper part 10 a not having the bulging part 12.

  The cooling heat exchanger 11 and the expansion valve 13 are assembled in advance, and the assembly is assembled to the housing lower part 10b. That is, the expansion valve 13 is installed inside the bulging part 12, and the cooling heat exchanger 11 is installed inside the main body of the housing lower part 10b. Here, the insertion of the expansion valve 13 into the bulging portion 12 can be easily performed because the opening 30 facing the internal space of the bulging portion 12 is wide open.

  Thereafter, the closing member 14 is placed on the edge 17 of the opening 30 while avoiding the piping connecting the cooling heat exchanger 11 and the expansion valve 13. Further, the flying water prevention net 15 configured integrally with the closing member 14 is assembled with an inclination so that the lower part is separated from the cooling heat exchanger 1.

  Here, since the blocking member 14 and the water splash prevention net 15 are configured integrally, the labor of coupling between the members becomes unnecessary as compared with the case where they are separate members. If the position of the blocking member 14 is fixed, the position of the splash prevention net 15 is also set, thereby eliminating the complexity of assembly.

  Finally, the housing upper part 10a is fixed so as to be united with the housing lower part 10b. At that time, the position may be fixed by restraining the upper end portion of the water splash preventing net 15 by the collar portion 18 provided on the housing upper portion 10a and raised on the inner side of the housing 10.

  As described above, it is desirable that the flying water prevention net 15 is assembled with an inclination so that the lower part is separated from the cooling heat exchanger 1, but there are spatial restrictions, the amount of water droplets generated, and the like. Therefore, there may be a case where the assembly state is different from this (for example, a state where the lower side and the upper side are equidistant from the cooling heat exchanger 11 or a state where the upper side is separated from the cooling heat exchanger 11). However, even in this case, the effect of improving the assemblability due to the integration of the blocking member 14 and the water splash preventing net 15 is reduced even if the effect of promoting the flow of water drops described later is reduced. is not.

  The operation of the heating element cooling device 1 having such a configuration will be described. The air recirculated through the inside of the module case 3 by the blower 4 is cooled in the cooling heat exchanger 11 built in the case 3 inside the heating element cooling device 1, and on the leeward side surface of the airflow, Water droplets in which water vapor condenses are generated, and these water droplets are separated from the surface of the cooling heat exchanger 11 depending on the air flow rate and speed.

  The detached water droplets are captured by the flying water prevention net 15 disposed downstream of the cooling heat exchanger 11, and gradually grow and drop downward (flow down) due to gravity. Here, if the lower part of the flying water prevention net 15 is disposed so as to be separated from the heating element cooling device 1, the air flow reaching the flying water prevention net 15 is not only the component that passes through the flying water prevention net 15, A component directed downward along the inclination of the flying prevention net 15 is generated. For this reason, the downward movement of the water droplets is based on wind power in addition to the gravity, and the downward flow of the water droplets can be promoted.

  The water droplets that have reached the lower side are directed to the drainage groove 16 between the flying water prevention net 15 and the blocking member 14, where water droplets captured in the entire area of the flying water prevention net 15 are collected and the drainage groove 16 is inclined. 3 flows from the back side to the near side in FIG. Then, it passes through a vertical ridge (not shown) at the end on the near side, is led to the drain 19 provided in the bulging portion 12, and is drained to the outside of the heating element cooling device 1.

  Note that the drainage method is not limited to this, and a method that does not use a soot, a method that uses piping such as a hose, or the like that does not discharge to the outside and stores it inside the heating element cooling device 1 or the heating element cooling system 100. It may be. At this time, if the water-absorbing material absorbs the liquefied water, it can be prevented from diffusing into the module case 3.

  Here, since the splash prevention net 15, the blocking member 14, and the drainage groove 16 are integrally formed without being divided, leakage of water droplets from the divided portion that may occur when the separate members are used. Can also be prevented.

  Moreover, since the members are integrated, it is possible to avoid the occurrence of a situation such as forgetting the assembly that may occur when the members are constituted by different members.

  Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a perspective view of the heating element cooling device 2 according to the second embodiment of the present invention.

  In this embodiment, the heating element cooling device 1 of the first embodiment is generally rotated 90 degrees. That is, the expansion valve 23 is arranged on the side of the cooling heat exchanger 21 instead of below. The bulging portion 22 of the housing 20 is also provided on the side instead of the lower side, and therefore the opening 40 of the housing 20 is also provided on the vertical surface. Further, the divided structures 20a and 20b of the housing 20 are also cracked in the right and left instead of the upper and lower sides. Also about the member which the obstruction | occlusion member 24 of the opening part 40 and the water splash prevention net | network 25 integrated, the edge of the coupling | bond part will be in a substantially perpendicular state.

  In the assembling method in this embodiment, first, the partially assembled cooling heat exchanger 21 and the expansion valve 23 are assembled on the divided portion 20a side of the housing having the bulging portion 22. Also, since the opening 40 is wide, the expansion valve 23 can be easily assembled inside the bulging portion 22.

  Thereafter, the closing member 24 of the opening 40 is disposed in the opening 40 while avoiding the piping connecting the heat exchanger 11 for cooling and the expansion valve 13. The opening 40 may include an edge as in the case of the first embodiment. Further, the flying water preventing net 25 configured integrally with the closing member 24 is assembled with an inclination so that the lower part is separated from the cooling heat exchanger 1.

  Finally, the assembly of the heating element cooling device 2 is completed by fixing the divided portion 20b of the housing 20 so as to be combined with the divided portion 20a.

  FIG. 8 is a perspective view showing the positional relationship between the blocking member 24 and the water splash prevention net 15. In the present embodiment, the blocking member 24 and the splash prevention net 25 are part of an integrated member that is integrally formed. The bent part (connecting part) between the blocking member 24 and the splash prevention net 25 is a substantially vertical ridge, and no drainage groove is provided. In addition, you may make it provide a drain groove in the lower end part of a water splash prevention net | network. Further, the integrated member may be molded in a state where the connection portion is bent from the beginning as shown in FIG. 8, or may be formed in a flat shape without being bent and bent at the time of assembly.

  Thus, also in 2nd Embodiment, the effect of the improvement of an assembly property by the member with which the closure member 24 and the water splash prevention net | network 25 were integrated is fully acquired.

  In the description of the embodiments so far, the explanation has been given by taking the automobile battery as the heating element 5 and the evaporator as the cooling heat exchanger 1, but the invention is not limited to this, and the heating element needs to be cooled. As an electric device (for example, an inverter of a vehicle driving motor) and a cooling heat exchanger, any heat exchanger (for example, a liquid cooling heat exchanger) used for cooling is included. Further, although the blower 4 has been described as not included in the heating element cooling apparatus 1, the blower 4 may be disposed inside the housing 10 and may be a component constituting the heating element cooling apparatus 1.

DESCRIPTION OF SYMBOLS 1 Heating body cooling device 10 Housing 11 Cooling heat exchanger 12 Expansion part 13 Expansion valve 14 Closure member 15 Water splash prevention net 16 Drain groove 17 Edge part 18 Grain part 19 Drain outlet 2 Heating body cooling apparatus 20 Housing 21 For cooling Heat exchanger 22 Expansion part 23 Expansion valve 24 Closure member 25 Water splash prevention net 30 Opening part 40 Opening part

Claims (3)

A heating element cooling device for cooling a heating element with an air flow,
A substantially cylindrical housing through which the air flow passes and having a bulging portion;
A cooling heat exchanger installed inside the housing for cooling the air flow;
A closing member installed inside the housing and closing the bulging portion;
-A heating element cooling device comprising a flying water prevention net installed downstream of the cooling heat exchanger and configured integrally with the closing member. The closing member is
-Disposed below the cooling heat exchanger;
The heating element cooling device according to claim 1, further comprising a drainage groove for flowing water flowing out of the flying prevention net. The flying water prevention net is
The heating element cooling device according to claim 1 or 2, wherein at least a lower part is installed to be inclined so as to be separated from the cooling heat exchanger.

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