JP2018144501A - Introduction air unit and cooling module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an introduction air unit capable of cooling a space of vehicle rear for an engine for traveling amongst inside of an engine room while restricting deterioration of serviceability concerning the engine for traveling.SOLUTION: An introduction air duct 60 flows air which flowed from a front side opening which opens through a ventilation hole of a shroud 50 into a rear side opening part 62 which opens to vehicle rear for the engine 16 for traveling amongst inside of the engine room. Accordingly, it can cool space of the vehicle rear for the engine 16 for traveling amongst inside of the engine room by air introduced to the introduction air duct 60. And then the introduction air duct 60 contains a downstream duct member 64, and the downstream duct member 64 includes a downstream side connection part 641 configured so as to be able to remove the downstream duct member 64 from the shroud 50 on side opposed to side of the second opening part. Consequently, it can restrain the serviceability concerning the engine 16 for traveling from being deteriorated by being resulted to the introduction air duct 60.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an air guide unit and a cooling module provided in an engine room of an automobile.

  For example, a duct for cooling an intercooler for a vehicle described in Patent Document 1 is known as one of the units that guide air like the above-described air guide unit. The intercooler cooling duct is a duct that connects an air outlet formed on the engine room side of the engine hood of the vehicle and an air inlet of the intercooler.

  Specifically, the intercooler cooling duct of Patent Document 1 includes an upper end opening connected to an air outlet of the engine hood and a lower end opening that is abutted against the air intake of the intercooler when the engine hood is closed. And. The intercooler cooling duct supplies outside air that has passed through the engine hood and exited from the air outlet to the intercooler.

JP 2001-39171 A

  For example, in an engine room of an automobile, a cooling module that performs a cooling function, in other words, a cooling module is provided. The cooling module is composed of a radiator that radiates engine cooling water, a condenser that is a radiator of an air conditioner that air-conditions the vehicle interior, a blower that generates cooling air, and a shroud that fixes them and guides the cooling air Has been. The heat of the refrigerant circulating in the air conditioner and the heat of the engine cooling water are dissipated by the running wind and the cooling air from the blower.

  However, due to the layout of the automobile, the cooling module is usually arranged in front of the engine room. Therefore, the heat discarded by the cooling module, that is, the heat transferred to the outside air by the radiator and the condenser flows to the traveling engine disposed at the rear of the vehicle with respect to the cooling module, which causes a reduction in heat radiation efficiency. .

  In recent years, with the reduction of the engine room and the rear exhaust of the traveling engine, heat tends to be accumulated in the engine rear space behind the vehicle with respect to the traveling engine in the engine room, and heat damage to the surrounding electronic components, etc. The issue of giving

  In view of this, the inventors have considered providing a duct that guides the front wind that flows into the engine room from the front of the vehicle to the space behind the engine. However, if a duct is simply provided in this way, it has been considered that a new problem of deteriorating serviceability related to a traveling engine, such as replacement of an engine plug, will occur.

  In order to solve this new problem, even if the intercooler cooling duct of Patent Document 1 is applied to the cooling module, the intercooler cooling duct is not provided in the cooling module in the first place. I can't.

  In view of the above, the present invention provides a wind guide unit and a cooling module capable of cooling a space behind a vehicle with respect to a traveling engine in an engine room while suppressing deterioration in serviceability related to the traveling engine. The purpose is to do.

In order to achieve the above object, the invention described in claim 1 is directed to the engine room from the engine room opening (2) opened in front of the vehicle in the engine room (14) where the traveling engine (16) is arranged. A wind guide unit applied to an automobile (12) into which air flows,
The radiator (20) of the air conditioner, the engine cooling heat exchanger (30) for cooling the traveling engine, and the blower (40) are fixed, and the radiator and the engine cooling heat exchange through the engine room opening. A shroud (50) that guides the air passing through the vessel and is provided with a vent hole (50b);
A first opening (61) connected to the shroud at the ventilation hole and opening through the ventilation hole; and a second opening (62) opening to the rear of the vehicle with respect to the traveling engine in the engine room. An air duct (60) for flowing air between the opening and the second opening,
The air guide duct forms a first duct passage (64a) that constitutes at least a part of the air guide duct, has a second opening, and allows air from the ventilation hole to flow to the second opening. A member (64),
The first duct member has a first connection portion (641) configured to be able to remove the first duct member from the shroud on the side opposite to the second opening side. .

  According to the above-described invention, the air guide duct is connected to the shroud at the shroud vent hole and opens through the vent hole, and the second opening that opens to the rear of the vehicle with respect to the traveling engine in the engine room. Since the air flows between the first opening and the second opening, the space behind the vehicle with respect to the traveling engine in the engine room is cooled by the air guided to the air duct. It is possible.

  The air duct includes a first duct member, and the first duct member has a first connecting portion configured to be able to remove the first duct member from the shroud, on the side opposite to the second opening side. Therefore, the first duct member can be separated from the shroud and removed from the engine compartment without removing the shroud from the engine compartment. Therefore, it is possible to prevent the serviceability related to the traveling engine from deteriorating due to the air guide duct.

  In addition, each code | symbol in the bracket | parenthesis described in a claim and this column is an example which shows a corresponding relationship with the specific content as described in embodiment mentioned later.

It is the schematic diagram which looked at the whole structure of the cooling module 10 in 1st Embodiment from the vehicle upper side. It is the perspective view which extracted and showed the air guide duct 60, the shroud 50, the electric fan 40, and the driving | running | working engine 16 of FIG. FIG. 3 is a schematic view of the cooling module 10 and the traveling engine 16 as viewed from the right side of the vehicle in the vehicle width direction DR2 as indicated by an arrow III in FIG. 2, and illustrates a method for assembling the downstream duct member 64. FIG. 4 is an enlarged view of a portion corresponding to the IV portion of FIG. 3 in the first embodiment, and is a cross-sectional view showing a connection structure between a downstream connection portion 641 and an upstream connection portion 661. FIG. 6 is a diagram showing a different point from the first embodiment in the cooling module 10 of the second embodiment, and is a cross-sectional view showing a connection structure between the downstream side connection portion 641 and the upstream side connection portion 661 as in FIG. 4. is there. FIG. 10 is a diagram showing a different point from the first embodiment in the cooling module 10 of the fourth embodiment, and is a cross-sectional view showing a connection structure between a downstream connection portion 641 and an upstream connection portion 661. FIG. 10 is a view showing a different point from the fourth embodiment in the cooling module 10 of the fifth embodiment, and is a cross-sectional view showing a connection structure between the downstream side connection portion 641 and the upstream side connection portion 661. 8 is a cross-sectional view illustrating a state in which one of the downstream side connection portion 641 and the upstream side connection portion 661 is displaced in the radial direction with respect to the other in the connection structure of FIG. It is the figure which showed the different point from 1st Embodiment in the cooling module 10 of 6th Embodiment, Comprising: With the bonnet 70 opened, the cooling module 10, the engine 16 for driving | running | working, the bonnet 70, etc. are vehicle width direction DR2. It is the schematic diagram seen from the right side. FIG. 10 is a schematic view of the cooling module 10, the traveling engine 16, the bonnet 70, and the like, as viewed from the right side in the vehicle width direction DR 2, similarly to FIG. 9, showing a state where the bonnet 70 is closed. It is the figure which showed the different point from 1st Embodiment in the cooling module 10 of 7th Embodiment, Comprising: It is sectional drawing which cut | disconnected the downstream connection part 641 and the upstream connection part 661 in the cross section orthogonal to those axial directions. is there. It is sectional drawing showing the string part 78 single-piece | unit of FIG. FIG. 13 is a cross-sectional view showing a state in which a knob portion 781 is deformed by an external force F1 in the same cross section as FIG. It is XIV-XIV sectional drawing of FIG. FIG. 15 is a cross-sectional view showing a state where an external force F2 is applied in a direction in which the downstream connection portion 641 is removed from the upstream connection portion 661 in the same cross section as FIG. It is the figure which showed one of the modifications of 1st Embodiment, Comprising: It is sectional drawing equivalent to FIG. FIG. 6 is a view showing one modification of the second embodiment and is a cross-sectional view corresponding to FIG. 5. FIG. 10 is a cross-sectional view corresponding to FIG. 6 in the first modification of the fourth embodiment, and is a cross-sectional view showing a state in which the downstream side connection portion 641 is biased to the lower side inside the upstream side connection portion 661. is there. FIG. 19 is a cross-sectional view showing a state in which the downstream side connection portion 641 is biased to the upper side inside the upstream side connection portion 661 in the same cross section as FIG. It is the figure which showed the 2nd modification of 4th Embodiment, Comprising: It is sectional drawing equivalent to FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
FIG. 1 is a schematic view of the entire configuration of the cooling module 10 according to the present embodiment as viewed from above the vehicle. Arrows DR1 and DR2 in FIG. 1 and an arrow DR3 in FIG. 2 described later indicate the direction of the vehicle 12 on which the cooling module 10 is mounted. That is, the double-ended arrow DR1 in FIG. 1 indicates the vehicle longitudinal direction DR1, the double-ended arrow DR2 indicates the vehicle left-right direction DR2, that is, the vehicle width direction DR2, and the double-ended arrow DR3 in FIG.

  As shown in FIG. 1, an engine room 14 is formed in the vehicle 12, in other words, in the automobile 12 in front of the automobile 12. The cooling module 10 is disposed from the portion between the engine room opening 2 and the traveling engine 16 to the rear of the traveling engine 16 in the vehicle longitudinal direction DR1 in the engine room 14.

  Here, the engine room 14 is a space in which the traveling engine 16 is disposed, and is a front engine room provided in front of the vehicle with respect to the passenger compartment (that is, the passenger compartment) of the automobile 12. The engine room opening 2 is an opening that opens in front of the engine room 14 in the vehicle and allows air to pass in the vehicle front-rear direction DR <b> 1, and is formed in the front grill 4 of the automobile 12. Since the engine room opening 2 is provided in the front grill 4 in this way, for example, outside air in the vehicle compartment, such as traveling wind, that is, outside air passes through the engine room opening 2 and passes through the engine room opening 2 to the inside of the engine room 14. Flow into.

  Specifically, as shown in FIG. 1, the cooling module 10 includes a capacitor 20, a radiator 30, an electric fan 40, a shroud 50, and an air guide duct 60. As a whole, the shroud 50 and the air guide duct 60 constitute an air guide unit that guides air in the cooling module 10.

  Among the cooling modules 10, the capacitor 20, the radiator 30, the electric fan 40, and the shroud 50 are disposed between the engine room opening 2 and the traveling engine 16 in the vehicle longitudinal direction DR1. The condenser 20 is a component of an air conditioner that performs air conditioning of the vehicle interior, and constitutes a refrigeration cycle apparatus that circulates refrigerant contained in the air conditioner together with a compressor, a pressure reducing valve, and an evaporator. Specifically, the capacitor 20 is a heat exchanger as a radiator that dissipates heat of the high-pressure refrigerant discharged from the compressor to the outside air and condenses the high-pressure refrigerant.

  The radiator 30 is disposed on the rear side of the vehicle with respect to the capacitor 20 and on the front side of the vehicle with respect to the electric fan 40. The radiator 30 is an engine cooling heat exchanger for cooling the traveling engine 16. Specifically, the radiator 30 cools the traveling engine 16 by dissipating heat of engine cooling water as a heat medium circulating in the traveling engine 16 to the outside air.

  Further, the radiator 30 is disposed on the upstream side of the electric fan 40 in the air flow direction in the introduction flow path 50a. The introduction flow path 50a is an air passage for guiding the air flow sucked from the engine room opening 2 through the condenser 20 and the radiator 30 to the electric fan 40 as shown by an arrow K in FIG. The air flow direction in the introduction flow path 50a is the flow direction of the main flow having the largest air volume among the plurality of air flows flowing through the introduction flow path 50a.

  The electric fan 40 is, for example, an axial-flow fan, and generates an air flow (that is, cooling air) that passes through the condenser 20 and the radiator 30 from the front of the automobile 12 through the engine room opening 2. In other words, electric fan 40 sucks air that has passed through condenser 20 and radiator 30 from the front of the vehicle, and blows out the sucked air to the rear of the vehicle.

  The shroud 50 is fixed to the vehicle body 6, and the capacitor 20, the radiator 30, and the electric fan 40 are fixed to the shroud 50. They may be fixed directly or indirectly with respect to the shroud 50. In the present embodiment, for example, the radiator 30 and the electric fan 40 are directly fixed to the shroud 50. The capacitor 20 is directly fixed to the radiator 30, and is fixed to the shroud 50 through the radiator 30.

  The shroud 50 is a casing that forms an introduction flow path 50 a for guiding the air flow sucked from the engine room opening 2 through the condenser 20 and the radiator 30 to the electric fan 40. In other words, the shroud 50 is an air guide member that guides air (that is, outside air) passing through the condenser 20 and the radiator 30 through the engine room opening 2. The shroud 50 is formed so as to surround the space formed between the capacitor 20 and the radiator 30 and the space formed between the radiator 30 and the electric fan 40 in a cylindrical shape.

  The shroud 50 is formed with a ventilation hole 50b through which a part of the air flowing through the introduction flow path 50a flows into the air guide duct 60. The ventilation hole 50 b is disposed on the downstream side of the radiator 30 and the upstream side of the electric fan 40 in the air flow in the introduction flow path 50 a. That is, in the vehicle front-rear direction DR <b> 1, the ventilation holes 50 b of the shroud 50 are disposed behind the radiator 30 and forward of the electric fan 40. Further, the ventilation hole 50b is disposed at a position biased to one of the left and right with respect to the electric fan 40 in the vehicle width direction DR2.

  The air guide duct 60 is an air guide pipe disposed on the upper side of the traveling engine 16 in the engine room 14, and forms an in-duct flow path 60 a, which is an air flow path 60 a through which air flows, in the air guide duct 60. ing. Specifically, the air duct 60 has a front opening 61 as a first opening and a rear opening 62 as a second opening. Air flows between the front opening 61 and the rear opening 62.

  As shown in FIGS. 1 and 2, the front opening 61 of the air guide duct 60 constitutes an end portion of the air guide duct 60 in front of the vehicle, and is connected to the shroud 50 through the air vent 50b and the air vent. The inlet channel 50a is opened through the hole 50b. And the front side opening part 61 is opening toward the radiator 30, in short, facing the vehicle front. Thus, the front opening 61 forms a duct inlet provided on the shroud 50 side of the air guide duct 60. FIG. 2 is a perspective view illustrating the air guide duct 60, the shroud 50, the electric fan 40, and the traveling engine 16 extracted from FIG.

  Further, the rear opening 62 of the air duct 60 constitutes an end portion of the air duct 60 on the rear side of the vehicle, and is open to the rear of the vehicle with respect to the traveling engine 16 in the engine room 14. In other words, the rear opening 62 is open to the exhaust manifold 18 side with respect to the traveling engine 16 in the engine room 14. Thus, the rear side opening 62 forms a duct outlet provided on the side of the air guide duct 60 opposite to the shroud 50 side. In addition, although it confirms, the rear side opening part 62 should just be the vehicle rear side with respect to the engine 16 for driving | running | working, and the rear side opening part 62 does not need to open toward the vehicle rear side.

  Then, the air guide duct 60 flows the air flowing in from the front opening 61 to the rear opening 62.

  Specifically, the air guide duct 60 is composed of two duct members 64 and 66. That is, the air duct 60 includes a downstream duct member 64 as a first duct member and an upstream duct member 66 as a second duct member. In short, the downstream duct member 64 and the upstream duct member 66 are connected in series to form the air guide duct 60. The air guide duct 60 has a connection portion between the downstream duct member 64 and the upstream duct member 66 in the middle from the front opening 61 to the rear opening 62. The connection location may be provided at any location of the air guide duct 60.

  The downstream duct member 64 constitutes a downstream portion of the air guide duct 60 in the air flow direction in the air guide duct 60. Therefore, the downstream duct member 64 has the rear opening 62 as a downstream end portion of the downstream duct member 64 in the air flow direction in the air guide duct 60. On the other hand, the downstream duct member 64 has a downstream connection portion 641 that is a first connection portion connected to the upstream duct member 66 as an upstream end portion on the side opposite to the rear opening 62 side. . The air flow direction in the air guide duct 60 is the air flow direction from the front opening 61 to the rear opening 62 of the air guide duct 60, and the same applies to the description to be described later.

  The downstream duct member 64 has a downstream duct passage 64 a serving as a first duct passage that allows air flowing from the ventilation hole 50 b of the shroud 50 to flow from the downstream connection portion 641 to the rear opening 62. Forming.

  The upstream duct member 66 constitutes an upstream portion of the wind guide duct 60 in the air flow direction in the wind guide duct 60. That is, the upstream duct member 66 is provided on the upstream side with respect to the downstream duct member 64. In short, the upstream duct member 66 is interposed between the downstream duct member 64 and the shroud 50. Therefore, the upstream duct member 66 has the front opening 61 as an upstream end portion of the upstream duct member 66 in the air flow direction in the air guide duct 60. On the other hand, the upstream duct member 66 has an upstream connection portion 661 that is a second connection portion connected to the downstream connection portion 641 as a downstream end portion on the opposite side to the front opening 61 side. . That is, the upstream duct member 66 has the upstream side connection portion 661 on the downstream duct member 64 side of the upstream duct member 66.

  The upstream duct member 66 forms an upstream duct passage 66a in the upstream duct member 66 as a second duct passage through which air from the ventilation hole 50b of the shroud 50 flows to the downstream duct passage 64a. That is, the upstream duct passage 66 a and the downstream duct passage 64 a are connected to each other to form the in-duct flow path 60 a of the air guide duct 60, and the downstream duct member 64 is connected to the shroud 50 via the upstream duct member 66. Has been.

  Further, the upstream duct member 66 is fixed to the shroud 50 at the front opening 61. Therefore, the upstream side connection portion 661 included in the upstream duct member 66 is also fixed to the shroud 50. The upstream duct member 66 may be fixed to the shroud 50 by, for example, integral molding of the upstream duct member 66 and the shroud 50, or after the upstream duct member 66 and the shroud 50 are formed as separate parts. It may be fixed by snap fit or the like.

  For example, the downstream duct member 64 is a member fixed to the traveling engine 16, and is piped on the upper side of the traveling engine 16 in the engine room 14. That is, the downstream duct member 64 is piped between the traveling engine 16 and the hood 70 (see FIG. 9) that forms the upper part of the engine room 14 and can be opened and closed in the vehicle vertical direction DR3 (see FIG. 2). .

  The downstream duct member 64 is assembled from the upper side with respect to the traveling engine 16 as indicated by an arrow AR1 in FIG. 3, and at the same time, at the IV portion in FIG. 3, the downstream side connection part 641 and the upstream side connection part 661. Are connected to each other. In this way, the downstream connection portion 641 and the upstream connection portion 661 are connected to each other, so that the air guide duct 60 can guide the air flowing from the ventilation holes 50b of the shroud 50 to the rear opening 62. become able to. 3 is a schematic view of the cooling module 10 and the traveling engine 16 as viewed from the right side of the vehicle in the vehicle width direction DR2 as indicated by an arrow III in FIG. 2, and illustrates an assembling method of the downstream duct member 64. FIG.

  The details of the connection structure between the downstream side connection portion 641 and the upstream side connection portion 661 are shown in the sectional view of FIG. FIG. 4 is an enlarged view of a portion corresponding to the IV portion of FIG. 3, and is a cross-sectional view showing a connection structure between the downstream side connection portion 641 and the upstream side connection portion 661. FIG. 3 shows a state before the downstream duct member 64 is connected to the upstream duct member 66, while FIG. 4 shows a state after the downstream duct member 64 is connected to the upstream duct member 66. .

  As shown in FIG. 4, both the downstream connection portion 641 and the upstream connection portion 661 have a cylindrical shape, for example, a cylindrical shape. And the cylindrical downstream connection part 641 is connected to the rear side opening part 62 via the downstream duct channel | path 64a. In other words, the downstream connection portion 641 forms an air passage inside the downstream connection portion 641, and the air passage communicates with the rear opening 62 (see FIG. 1) via the downstream duct passage 64a.

  On the other hand, the cylindrical upstream connection portion 661 communicates with the ventilation hole 50b (see FIG. 2) of the shroud 50 via the upstream duct passage 66a. In other words, the upstream connection portion 661 forms an air passage inside the upstream connection portion 661, and the air passage communicates with the ventilation hole 50b of the shroud 50 via the upstream duct passage 66a.

  Furthermore, the thickness DL of the downstream connection portion 641 and the thickness DU of the upstream connection portion 661 are different from each other. In short, the sizes of the cylinders of both connection portions 641 and 661 are different from each other. And one connection part of the downstream connection part 641 and the upstream connection part 661 is inserted in the other connection part. In the present embodiment, the downstream side connection portion 641 is formed thinner than the upstream side connection portion 661, and the downstream side connection portion 641 is inserted into the upstream side connection portion 661. Accordingly, the thickness DL of the downstream connection portion 641 is specifically the outer diameter of the downstream connection portion 641, and the thickness DU of the upstream connection portion 661 is specifically the inner diameter of the upstream connection portion 661. It is.

  By inserting the downstream connection portion 641 into the upstream connection portion 661 in this way, the downstream duct member 64 is connected to the shroud 50 via the upstream duct member 66. The downstream side connection portion 641 is provided so as to overlap with the upstream side connection portion 661 in the radial direction. For example, in the present embodiment, the downstream connection portion 641 is inserted into the upstream connection portion 661 in the vehicle vertical direction DR3 (see FIG. 2).

  The downstream connection part 641 and the upstream connection part 661 are respectively connected to the downstream duct member 64 from the upstream duct member 66 fixed to the shroud 50 in detail so that the downstream duct member 64 can be removed from the shroud 50. It is configured to be removable.

  Returning to FIGS. 1 and 2, the exhaust manifold 18 is a manifold that collects a plurality of exhaust passages connected to the traveling engine 16 into one exhaust pipe that exhausts exhaust gas from the traveling engine 16. The exhaust manifold 18 is disposed in the rear of the vehicle with respect to the traveling engine 16 in the engine room 14.

  In the present embodiment, a turbocharger turbine and a catalyst device are arranged in addition to the exhaust manifold 18 at the rear of the engine room 14 with respect to the traveling engine 16. The catalyst device is a device that purifies harmful components in exhaust gas blown from the traveling engine 16 by reduction and oxidation. The turbocharger extracts rotational energy from the internal energy of the exhaust gas blown out from the traveling engine 16 by the turbine, operates the compressor by this rotational energy, generates compressed air, and supplies the compressed air to the intake port of the traveling engine 16. Device. A turbocharger turbine is a device that extracts rotational energy from internal energy of exhaust gas.

  By the way, when the automobile 12 is traveling at a high speed, as the automobile 12 travels, as the vehicle traveling wind passing through the engine room opening 2, the capacitor 20, the radiator 30, and the electric fan 40 from the front of the automobile 12. Air flow is generated.

  For this reason, a part of the air flow as the vehicle running wind that has passed through the engine room opening 2, the condenser 20, and the radiator 30 from the front of the vehicle 12 through the front opening 61 through the ventilation hole 50 b of the shroud 50. The air is introduced into the in-duct flow path 60a of the duct 60 and blown out from the rear opening 62 of the air guide duct 60 to the exhaust manifold 18 side. Therefore, the exhaust manifold 18, the catalyst device, and the turbocharger turbine disposed in the engine rear space, which is the space behind the vehicle with respect to the traveling engine 16 in the engine room 14, are guided to the wind guide duct 60 and rear side. It can be cooled by the air blown from the opening 62.

  Thus, the air flow that has cooled the exhaust manifold 18, the catalyst device, and the turbocharger turbine flows to the bottom side of the exhaust manifold 18. As a result, an air flow that flows around the engine room opening 2, the condenser 20, the radiator 30, the air guide duct 60, and the exhaust manifold 18 and flows under the floor of the automobile 12 is generated.

  Of the air flow introduced from the front side in the vehicle longitudinal direction of the automobile 12 into the introduction flow path 50a through the engine room opening 2, the remaining air flow other than the air flow flowing into the air guide duct 60 is an electric fan. Inhaled into 40. The remaining air sucked in by the electric fan 40 passes around the traveling engine 16 and flows below the floor. For this reason, the traveling engine 16 is cooled by the airflow that flows from the introduction flow path 50a through the electric fan 40 to the traveling engine 16 side.

  According to the present embodiment described above, the engine rear space in the engine room 14 can be cooled as described above. That is, it is possible to cool the exhaust manifold 18, the catalyst device, and the turbocharger turbine disposed in the engine rear space. For this reason, for example, it is possible to avoid heat damage from occurring in the exhaust manifold 18, the catalyst device, the turbocharger turbine, and its peripheral components.

  The air duct 60 includes a downstream duct member 64 as a part of the air duct 60, and the downstream duct member 64 is configured to allow the downstream duct member 64 to be removed from the shroud 50. A portion 641 is provided on the side opposite to the rear opening 62 side. Accordingly, the downstream duct member 64 can be separated from the shroud 50 and removed from the engine room 14 without removing the shroud 50 from the engine room 14. As a result, it is possible to suppress deterioration in serviceability related to the traveling engine 16 due to the air guide duct 60. For example, when performing work related to the traveling engine 16 or its peripheral devices, the worker can remove only the downstream duct member 64 on the upper side of the traveling engine 16 from the cooling module 10. .

  Further, since the downstream duct member 64 can be removed from the shroud 50, it is not necessary to install the shroud 50, the downstream duct member 64, and the upstream duct member 66 in the engine room 14 at the same time. Therefore, it is possible to satisfactorily secure the assembling property when the air guide duct 60 is installed in the engine room 14. For example, the operator can install the downstream duct member 64 after installing the shroud 50 and the upstream duct member 66 fixed to the shroud 50 in the engine room 14.

  Further, since the downstream duct member 64 fixed to the traveling engine 16 and the upstream duct member 66 fixed to the vehicle body 6 via the shroud 50 are separate members, the vibration of the vehicle body 6 The vibration phase difference can be absorbed between the upstream duct member 66 to which the vibration is transmitted and the downstream duct member 64 to which the vibration of the traveling engine 16 is transmitted. Therefore, the vibration durability of the shroud 50 and the air guide duct 60 can be satisfactorily ensured.

  Further, according to the present embodiment, the downstream side connection portion 641 and the upstream side connection portion 661 both have a cylindrical shape, and the upstream side connection portion 661 communicates with the ventilation hole 50b of the shroud 50 through the upstream duct passage 66a. doing. The downstream connection portion 641 is inserted into the upstream connection portion 661, whereby the downstream duct member 64 is connected to the shroud 50 via the upstream duct member 66. Therefore, the downstream duct member 64 and the upstream duct member 66 can be connected with a simple structure so as to allow ventilation.

  In addition, according to the present embodiment, the downstream duct member 64 is connected to the shroud 50 via the upstream duct member 66, so that the connection point between the downstream duct member 64 and the upstream duct member 66 is connected to the shroud 50. It is easy to lay out at a desired position without being restricted by the arrangement. For example, the connection location between the duct members 64 and 66 can be laid out at a position where connection work is facilitated.

  In the present embodiment, the front opening 61 of the air guide duct 60 is connected to the shroud 50 through the ventilation holes 50 b of the shroud 50. For this reason, it is possible to reduce the resistance of the air flow that passes through the radiator 30 through the engine room opening 2 when the automobile 12 is traveling at high speed. For example, the amount of air passing through the radiator 30 can be equivalent to the amount of air blown when a conventional electric fan 40 having a ram pressure hole in the shroud 50 is used. As a result, the cooling capacity for cooling the radiator 30 can be improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the present embodiment, differences from the first embodiment will be mainly described. Further, the same or equivalent parts as those of the above-described embodiment will be described by omitting or simplifying them. The same applies to third and later embodiments described later.

  FIG. 5 is a diagram showing a different point from the first embodiment in the cooling module 10 of the present embodiment, and shows a connection structure between the downstream connection portion 641 and the upstream connection portion 661 as in FIG. It is sectional drawing. As shown in FIG. 5, in this embodiment, the air guide duct 60 has a sealing material 68. This point is different from the first embodiment.

  Specifically, the sealing material 68 of the air guide duct 60 is made of an elastic body such as rubber or urethane foam. The sealing material 68 is provided over the entire circumference of the radial gap formed between the downstream connection portion 641 and the upstream connection portion 661, and is compressed in the radial direction by both the connection portions 641 and 661. ing. Thereby, the sealing material 68 closes the radial gap between the downstream side connection portion 641 and the upstream side connection portion 661.

  In the present embodiment, the effects produced from the configuration common to the first embodiment described above can be obtained as in the first embodiment. Moreover, according to this embodiment, since the sealing material 68 of the air guide duct 60 closes the radial gap between the downstream side connection portion 641 and the upstream side connection portion 661, the downstream duct member 64 and the upstream duct member It is possible to prevent air leakage at the connection point with 66.

(Third embodiment)
Next, a third embodiment of the present invention will be described. In the present embodiment, differences from the first embodiment will be mainly described.

  The downstream duct member 64 is assembled from the upper side with respect to the traveling engine 16 as indicated by the arrow AR1 in FIG. 3 described above. In this embodiment, the downstream duct member 64 constitutes a part of the engine cover 72. Yes. That is, the downstream duct member 64 is used as a part of the engine cover 72. This point is different from the first embodiment.

  The engine cover 72 of this embodiment is made of, for example, resin and is integrally formed including the downstream duct member 64. The engine cover 72 is disposed in the engine room 14 and covers at least a part of the upper side of the traveling engine 16. The engine cover 72 serves to prevent engine noise generated from the traveling engine 16, for example.

  The engine cover 72 is fixed to the traveling engine 16 by bolt fastening or the like. In short, the engine cover 72 is detachably fixed to the traveling engine 16. Therefore, the downstream duct member 64 included in the engine cover 72 can also be removed from the traveling engine 16.

  In the present embodiment, the effects produced from the configuration common to the first embodiment described above can be obtained as in the first embodiment. According to the present embodiment, since the downstream duct member 64 constitutes a part of the engine cover 72, the downstream duct member 64 can be removed together in the operation of removing the engine cover 72 from the traveling engine 16. is there.

  In addition, although this embodiment is a modification based on 1st Embodiment, it is also possible to combine this embodiment with the above-mentioned 2nd Embodiment.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 6 is a view showing a difference from the first embodiment in the cooling module 10 of the present embodiment, and is a cross-sectional view showing a connection structure between the downstream side connection portion 641 and the upstream side connection portion 661. In the present embodiment, the air guide duct 60 includes only the duct member 64 corresponding to the downstream duct member 64 as the first duct member among the two duct members 64 and 66 in the first embodiment, and the upstream duct member. No member corresponding to 66 is provided. Therefore, the upstream side connection portion 661 as the second connection portion is directly provided on the shroud 50 as shown in FIG. The duct member 64 is directly connected to the shroud 50. These points are different from the first embodiment.

  Specifically, as shown in FIG. 6, the downstream connection portion 641 and the upstream connection portion 661 both have a cylindrical shape, and the downstream connection portion 641 is inserted into the upstream connection portion 661. . The upstream side connection portion 661 includes an inner peripheral side surface 661a facing the downstream side connection portion 641, and a concave portion 661b formed on the inner peripheral side surface 661a and recessed from the inner peripheral side surface 661a. On the other hand, the downstream side connection portion 641 has an outer peripheral side surface 641a that faces the inner peripheral side surface 661a, and a convex portion 641b that protrudes from the outer peripheral side surface 641a and engages with the concave portion 661b.

  The convex portion 641b and the concave portion 661b are formed over the entire circumference of the downstream side connecting portion 641 and the upstream side connecting portion 661, and the convex portion 641b is fitted and engaged with the concave portion 661b over the entire circumference.

  In the present embodiment, the effects produced from the configuration common to the first embodiment described above can be obtained as in the first embodiment. Further, according to the present embodiment, since the convex portion 641b of the downstream side connection portion 641 is engaged with the concave portion 661b of the upstream side connection portion 661, the downstream side connection portion 641 of the duct member 64 is upstream of the shroud 50. It is possible to connect the downstream side connection portion 641 to the upstream side connection portion 661 so that the connection portion 661 does not easily come off.

  In addition, although this embodiment is a modification based on 1st Embodiment, it is also possible to combine this embodiment with the above-mentioned 2nd Embodiment or 3rd Embodiment.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. In the present embodiment, differences from the above-described fourth embodiment will be mainly described.

  FIG. 7 is a view showing a difference from the fourth embodiment in the cooling module 10 of the present embodiment, and is a cross-sectional view showing a connection structure between the downstream side connection portion 641 and the upstream side connection portion 661. In this embodiment, the convex part 641b of the downstream connection part 641 and the concave part 661b (see FIG. 6) of the upstream connection part 661 are not provided, and the downstream connection part 641 and the upstream connection part 661 are permanent magnets. It is connected using the magnetic force of 74. This point is different from the first embodiment.

  Specifically, as shown in FIG. 7, the downstream connection portion 641 and the upstream connection portion 661 both have a cylindrical shape, and the upstream connection portion 661 is inserted into the downstream connection portion 641. . The upstream side connection portion 661 has a permanent magnet 74 at the proximal end portion of the upstream side connection portion 661. On the other hand, the downstream connection portion 641 has a member 76 to be attracted to the permanent magnet 74 by the magnetic force of the permanent magnet 74 at the distal end portion of the downstream connection portion 641. For example, the permanent magnet 74 of the upstream connection portion 661 draws the attracted member 76 in the axial direction of the downstream connection portion 641 and the upstream connection portion 661 by its magnetic force. The attracted member 76 is made of, for example, an iron plate or a magnet that attracts the permanent magnet 74 of the upstream connection portion 661 by a magnetic force.

  Therefore, in this embodiment, the duct member 64 is connected to the shroud 50 by connecting the downstream connection portion 641 and the upstream connection portion 661 with a magnetic force generated between the permanent magnet 74 and the attracted member 76. Are connected to each other. Thereby, it is possible to easily maintain the state where the downstream side connection portion 641 and the upstream side connection portion 661 are connected by the magnetic force. Further, since the permanent magnet 74 and the attracted member 76 are in close contact with each other by magnetic force, it is possible to ensure a sufficient sealing property between the downstream connection portion 641 and the upstream connection portion 661.

  Further, the upstream connection portion 661 is inserted into the downstream connection portion 641 longer than the distance that the magnetic force of the permanent magnet 74 reaches the attracted member 76 in the axial direction of the upstream connection portion 661. Accordingly, even if the permanent magnet 74 and the attracted member 76 are slightly separated in the axial direction of the upstream connection portion 661 due to vibration or the like, the upstream connection portion 661 is prevented from dropping from the downstream connection portion 641. In addition, the positional relationship between the permanent magnet 74 and the attracted member 76 can be restored to the state before they are separated by the magnetic force of the permanent magnet 74.

  Further, the permanent magnet 74 and the attracted member 76 are abutted in the axial direction of the downstream side connection portion 641 and the upstream side connection portion 661. Then, one of the permanent magnet 74 and the member to be attracted 76 is formed so as to extend wider in the radial direction of the downstream side connection portion 641 and the upstream side connection portion 661 than the other. In the present embodiment, the permanent magnet 74 is formed so as to expand wider in the radial direction than the attracted member 76. Therefore, as shown in FIG. 8, even if one of the downstream side connection portion 641 and the upstream side connection portion 661 is displaced in the radial direction with respect to the other, the permanent magnet 74 and the attracted member 76 are in close contact with each other by magnetic force. It is possible to maintain the sealing property between the downstream connection portion 641 and the upstream connection portion 661.

  In the present embodiment, the same effects as those of the fourth embodiment described above can be obtained as in the fourth embodiment. Moreover, although this embodiment is a modification based on 4th Embodiment, it is also possible to combine this embodiment with the above-mentioned 3rd Embodiment.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described. In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 9 and FIG. 10 are views showing points different from the first embodiment in the cooling module 10 of the present embodiment. The cooling module 10, the traveling engine 16, the bonnet 70 and the like are arranged in the vehicle width direction DR2. It is the schematic diagram seen from the right side. FIG. 9 shows a state where the hood 70 is opened, and FIG. 10 shows a state where the hood 70 is closed.

  As shown in FIGS. 9 and 10, in this embodiment, the downstream duct member 64 is not fixed to the traveling engine 16 but is fixed to the hood 70. This point is different from the first embodiment. Further, the configurations of the downstream side connection portion 641 and the upstream side connection portion 661 are also different from those of the first embodiment.

  Specifically, the downstream duct member 64 is integrally fixed to the bonnet 70 by, for example, bolting. The bonnet 70 is connected to the vehicle body 6 via a hinge. Accordingly, the bonnet 70 opens and closes while rotating around the hinge.

  The downstream side connection part 641 and the upstream side connection part 661 are made of a material having elasticity such as rubber, and are formed in an annular shape so that, for example, air passes through the inside. The upstream connection portion 661 is disposed below the downstream connection portion 641.

  Then, the downstream duct member 64 rotates together with the bonnet 70, and when the bonnet 70 opens the upper part of the engine room 14, it is separated from the upstream duct member 66 and the shroud 50 as shown in FIG. That is, in that case, the downstream connection portion 641 is also separated from the upstream connection portion 661.

  When the bonnet 70 shown in FIG. 9 is rotated from the open state to the closing direction, the downstream connection portion 641 moves as indicated by the arrow ARb along with the rotation of the bonnet 70 and approaches the upstream connection portion 661.

  When the bonnet 70 closes the upper portion of the engine room 14, the downstream side connection member 641 and the upstream side connection portion 661 are brought into close contact with each other, as shown in FIG. The duct passage 64a and the upstream duct passage 66a (see FIG. 1) communicate with each other. That is, in that case, the downstream duct member 64 is connected to the shroud 50 via the upstream duct member 66 by connecting the downstream connection portion 641 and the upstream connection portion 661 to each other. In the state where the bonnet 70 is closed as shown in FIG. 10, the downstream side connection portion 641 and the upstream side connection portion 661 are in close contact with each other, so that at the connection portion between the downstream duct member 64 and the upstream duct member 66. Sealability is ensured.

  10 indicates the flow of exhaust from the traveling engine 16, and the solid line arrow indicates the flow of cooling air introduced into the air guide duct 60 from the front of the vehicle. As indicated by the solid line arrow in FIG. 10, for example, during traveling of the vehicle, the cooling air is guided to the rear of the traveling engine 16, and the exhaust manifold 18 is cooled.

  In the present embodiment, the effects produced from the configuration common to the first embodiment described above can be obtained as in the first embodiment. Further, according to the present embodiment, the downstream duct member 64 is fixed to the bonnet 70 and rotates together with the bonnet 70, so that when the worker performs work related to the traveling engine 16 or its peripheral devices. There is an advantage that it is not necessary to remove the downstream duct member 64.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described. In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 11 is a diagram showing points different from the first embodiment in the cooling module 10 of the present embodiment, in which the downstream side connection portion 641 and the upstream side connection portion 661 are cut in a cross section orthogonal to the axial direction thereof. It is sectional drawing. As shown in FIG. 11, the cooling module 10 of this embodiment includes a locking structure that locks the downstream side connection portion 641 to the upstream side connection portion 661. This point is different from the first embodiment.

  Specifically, as shown in FIG. 11, the downstream connection portion 641 and the upstream connection portion 661 both have a cylindrical shape, and the downstream connection portion 641 is inserted into the upstream connection portion 661. . And the downstream connection part 641 has the outer peripheral side surface 641a which opposes the upstream connection part 661, and the string part 78 which extends from the outer peripheral side surface 641a and comprises a string shape. The string portion 78 has flexibility, and is integrally formed including a plurality of knob portions 781 and 782 that locally swell in the middle of the string portion 78. In the present embodiment, a plurality of string portions 78, specifically two, are provided, but the number and arrangement of the string portions 78 are not limited to those shown in FIG.

  The knob portions 781 and 782 included in the string portion 78 are made of an elastic material such as rubber. The bumps 781 and 782 are formed in a spherical shape as shown in FIG. 12, and the insides of the bumps 781 and 782 are hollow. Thereby, the knob parts 781 and 782 are easily deformed by applying an external force. For example, as shown in FIG. 13, when an external force F1 is applied to the string portion 78 and the string portion 78 is pulled, the knob portion 781 extends in the longitudinal direction of the string portion 78 and deforms thinly. Therefore, by deforming the bumps 781 and 782 as shown in FIG. 13, the bumps 781 and 782 can be passed through holes having a smaller diameter than the outer diameters of the bumps 781 and 782. FIG. 12 is a cross-sectional view showing a single string portion 78, and FIG. 13 is a cross-sectional view showing a state in which the knob portion 781 is deformed by an external force F1 in the same cross section as FIG.

  As shown in FIG. 11, the upstream connection portion 661 is formed with an insertion hole 78a that penetrates the upstream connection portion 661 in the thickness direction. The insertion holes 78a are provided in the same number as the number of the string portions 78, and are formed to be smaller than the outer diameters of the knob portions 781 and 782.

  And as shown in FIG. 14 which is XIV-XIV sectional drawing of FIG. 11, the several string part 78 of the downstream connection part 641 is each penetrated by the several insertion hole 78a of the upstream connection part 661. Yes. At the same time, the insertion hole 78 a is disposed between the connection end 783 of the string portion 78 and the knob portion 781. In other words, at least one knob portion 781 of the plurality of knob portions 781 and 782 included in the string portion 78 is disposed outside the upstream connection portion 661. The connection end 783 of the string portion 78 is an end portion of the string portion 78 that is connected to the outer peripheral side surface 641 a of the downstream connection portion 641.

  For example, the positional relationship between the downstream side connection portion 641 and the upstream side connection portion 661 is normally as shown in FIG. 14, but as shown in FIG. 15, the external force F2 pulls the downstream side connection portion 641 from the upstream side connection portion 661. Sometimes added in the direction of leaving. When the external force F2 is applied in this manner, the downstream connection portion 641 is somewhat disengaged from the upstream connection portion 661 as shown in FIG. Is done. Therefore, it is possible to prevent the downstream duct member 64 (see FIG. 1) from dropping from the upstream duct member 66.

  In the present embodiment, the same effects as those of the first embodiment can be obtained as in the first embodiment. Moreover, although this embodiment is a modification based on 1st Embodiment, it is also possible to combine this embodiment with the above-mentioned 2nd Embodiment or 3rd Embodiment.

(Other embodiments)
(1) In the above-described first embodiment, the air guide duct 60 is composed of the two duct members 64 and 66, and the air guide duct 60 is the downstream duct of the two duct members 64 and 66. Only the duct member corresponding to the member 64, that is, the first duct member may be provided, and the first duct member may be directly connected to the shroud 50. In short, the first duct member may constitute a part of the air duct 60 or may constitute the entire air duct 60. In the case where the first duct member constitutes the entire air duct 60 as described above, the upstream duct member 66 is not provided, and therefore the connection portion corresponding to the upstream side connection portion 661, that is, the second connection portion is the shroud 50. Provided directly. The same applies to the second, third, sixth, and seventh embodiments.

  (2) In the fourth embodiment described above, the air guide duct 60 does not have a member corresponding to the upstream duct member 66 of the first embodiment, but the upstream duct member 66 is the same as in the first embodiment. In addition, the duct member 64 may be provided as the downstream duct member 64 connected to the upstream duct member 66. The same applies to the fifth embodiment.

  (3) In each of the embodiments described above, the engine room opening 2 is formed in the front grill 4 of the automobile 12, but is not limited thereto, and is formed, for example, in the lower front surface of the front bumper of the automobile 12. There is no problem.

  (4) In the first embodiment described above, the cylindrical downstream connection portion 641 is inserted into the cylindrical upstream connection portion 661 as shown in FIG. 4, but conversely as shown in FIG. In addition, the upstream connection portion 661 may be inserted into the downstream connection portion 641. If inserted as shown in FIG. 16, the thickness DL of the downstream connection portion 641 specifically represents the inner diameter of the downstream connection portion 641, and the thickness DU of the upstream connection portion 661 is specifically Represents the outer diameter of the upstream connecting portion 661.

  Further, as shown in FIG. 17, in the connection state in which the upstream connection portion 661 is inserted into the downstream connection portion 641, the downstream connection portion 641 and the upstream connection portion 661 are connected as in the second embodiment. There is no problem even if the gap in the radial direction is blocked by the sealing material 68.

  (5) In the fourth embodiment described above, the convex portion 641b is fitted and engaged with the concave portion 661b over the entire circumference of the downstream side connecting portion 641 and the upstream side connecting portion 661, but a part of the entire circumference It does not matter even if it only fits into the recess 661b. For example, as shown in FIG. 18, when the downstream side connection portion 641 is located on the lower side inside the upstream side connection portion 661, the lower portions of the convex portion 641b and the concave portion 661b may be engaged with each other. . On the contrary, as shown in FIG. 19, when the downstream connection part 641 is located on the upper side inside the upstream connection part 661, the upper part of the convex part 641b and the concave part 661b may be engaged with each other.

  In short, when the downstream connection portion 641 vibrates in the vehicle width direction DR2 (see FIG. 1) or the vehicle vertical direction DR3 (see FIG. 2) with respect to the upstream connection portion 661, the downstream connection portion 641 and the upstream connection portion. The convex part 641b and the concave part 661b may be engaged with each other at any part of the entire circumference of 661.

  (6) In the above-described fourth embodiment, the downstream connection portion 641 is inserted into the upstream connection portion 661 as shown in FIG. 6, but conversely, the upstream connection portion 661 is connected to the downstream connection portion. 641 may be inserted. In that case, for example, the downstream side connection portion 641 has a concave portion 661b, and the upstream side connection portion 661 has a convex portion 641b.

  (7) In the fourth embodiment described above, as shown in FIG. 6, the upstream connection portion 661 has a recess 661b, and the downstream connection portion 641 inserted inside the upstream connection portion 661 has a protrusion 641b. However, as shown in FIG. 20, the upstream side connection portion 661 may have a convex portion 661c and the downstream side connection portion 641 may have a concave portion 641c.

  In FIG. 20, the downstream connection portion 641 has a recess 641c formed on the outer peripheral side surface 641a of the downstream connection portion 641 and recessed from the outer peripheral side surface 641a. And the upstream connection part 661 has the convex part 661c which protrudes from the internal peripheral side surface 661a of the upstream connection part 661, and engages with the recessed part 641c.

  (8) In the above-described fifth embodiment, the upstream connection portion 661 has the permanent magnet 74 and the downstream connection portion 641 has the attracted member 76, but conversely, the upstream connection portion 661 has Even if it has the member to be attracted 76 and the downstream side connection portion 641 has the permanent magnet 74, there is no problem.

  (9) In the seventh embodiment described above, as shown in FIG. 11, the downstream connection portion 641 has a string portion 78, and the upstream connection portion 661 disposed outside the downstream connection portion 641 has an insertion hole. 78a is formed, but conversely, an insertion hole 78a may be formed in the downstream connection portion 641, and the upstream connection portion 661 may have the string portion 78. If it does so, the upstream connection part 661 has the string part 78 extended from the inner peripheral side surface 661a of the upstream connection part 661, and the connection end 783 of the string part 78 is connected to the inner peripheral side surface 661a. Is done. The insertion hole 78 a of the downstream connection portion 641 is disposed between the connection end 783 of the string portion 78 and the knob portion 781.

  (10) In each of the above-described embodiments, the cooling module 10 includes the radiator 30 as an engine cooling heat exchanger. Instead, an oil cooler that cools engine oil as a heat medium is engine-cooled. It may be provided as a heat exchanger for use.

  (11) In each of the embodiments described above, the air guide duct 60 is disposed on the upper side of the traveling engine 16 in the engine room 14, but may be disposed at a position other than the upper side of the traveling engine 16. Absent.

  (12) In each of the above-described embodiments, the engine room opening 2 is provided in front of the vehicle with respect to the radiator 30. For example, the engine room opening 2 is offset in the vehicle width direction DR2 with respect to the radiator 30. It may be provided at a different position.

  (13) In each of the embodiments described above, the exhaust manifold 18 is disposed in the engine room 14 at the rear of the vehicle with respect to the traveling engine 16, but at a position other than the rear of the vehicle with respect to the traveling engine 16. It may be arranged.

  (14) In each of the above-described embodiments, the electric fan 40 is described as being an axial flow fan, for example, but may be a fan other than the axial flow fan, such as a centrifugal fan.

  (15) In each of the above-described embodiments, the capacitor 20, the radiator 30, and the electric fan 40 are arranged in the order of the capacitor 20, the radiator 30, and the electric fan 40 from the front of the vehicle. However, the arrangement order is not limited. It's okay.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

14 Engine room 16 Driving engine 30 Radiator (heat exchanger for engine cooling)
40 Electric fan (blower)
50 shroud 60 air duct 61 front opening (first opening)
62 Rear opening (second opening)
64 Downstream duct member (first duct member)
641 Downstream side connection (first connection)

Claims (13)

A wind guide unit applied to an automobile (12) in which air flows into the engine room from an engine room opening (2) opened in front of the vehicle in an engine room (14) in which the traveling engine (16) is disposed. Because
An air conditioner radiator (20), an engine cooling heat exchanger (30) for cooling the traveling engine, and a blower (40) are fixed, and the radiator and the engine pass through the engine room opening. A shroud (50) for guiding the air passing through the heat exchanger for cooling and having a ventilation hole (50b);
A first opening (61) connected to the shroud at the ventilation hole and opening through the ventilation hole, and a second opening (62) opening in the engine room to the rear of the vehicle with respect to the traveling engine are provided. And an air duct (60) for flowing air between the first opening and the second opening,
The air guide duct forms at least a part of the air guide duct, has the second opening, and forms a first duct passage (64a) through which air from the ventilation hole flows to the second opening. Including a first duct member (64);
The first duct member has a first connection portion (641) configured to be able to remove the first duct member from the shroud on the side opposite to the second opening side. Characteristic wind guide unit. A second connection portion (661) that has a cylindrical shape and communicates with the ventilation hole and is fixed to the shroud;
The first connecting portion has a cylindrical shape,
The first duct member is connected to the shroud by inserting one connection portion of the first connection portion and the second connection portion into the other connection portion. The wind guide unit according to claim 1.   The wind guide according to claim 2, wherein the wind guide duct has a sealing material (68) that closes a gap formed between the first connection portion and the second connection portion. unit.   4. The wind guide unit according to claim 2, wherein the one connection portion is provided so as to overlap with a radially inner side of the other connection portion. 5. The one connection portion has an outer peripheral side surface (641a) facing the other connection portion, and a concave portion (641c) formed on the outer peripheral side surface and recessed from the outer peripheral side surface,
The other connecting portion includes an inner peripheral side surface (661a) opposed to the outer peripheral side surface, and a convex portion (661c) that protrudes from the inner peripheral side surface and engages with the concave portion. The wind guide unit according to any one of claims 2 to 4. The other connecting portion has an inner peripheral side surface (661a) facing the one connecting portion, and a concave portion (661b) formed on the inner peripheral side surface and recessed from the inner peripheral side surface,
The one connection portion has an outer peripheral side surface (641a) opposed to the inner peripheral side surface and a convex portion (641b) protruding from the outer peripheral side surface and engaging with the concave portion. The wind guide unit according to any one of claims 2 to 4. The one connection portion includes an outer peripheral side surface (641a) opposed to the other connection portion, a string shape extending from the outer peripheral side surface, and a locally inflated knob portion (781). A string portion (78) formed,
The string portion is inserted into the other connection portion, and an insertion hole (78a) disposed between the connection end (783) connected to the outer peripheral side surface of the string portion and the knob portion. ) Is formed,
5. The air guide unit according to claim 2, wherein the insertion hole is formed smaller than an outer diameter of the knob portion. The other connection portion includes an inner peripheral side surface (661a) facing the one connection portion, a string extending from the inner peripheral side surface, and a locally inflated knob portion (781). A string portion (78) composed of
The one connecting portion is inserted through the string portion, and an insertion hole disposed between the connection end (783) connected to the inner peripheral side surface of the string portion and the knob portion ( 78a) is formed,
5. The air guide unit according to claim 2, wherein the insertion hole is formed smaller than an outer shape of the knob portion. A second connection portion (661) that forms an air passage communicating with the ventilation hole and is fixed to the shroud;
One of the first connection portion and the second connection portion is configured to include a permanent magnet (74), and the other connection portion is covered by the permanent magnet by the magnetic force of the permanent magnet. Comprising a suction member (76),
The first duct member is connected to the shroud by connecting the first connection portion and the second connection portion with a magnetic force generated between the permanent magnet and the attracted member. The wind guide unit according to claim 1. An air passage communicating with the vent hole is formed, and is fixed to the shroud, and includes a second connection portion (661) disposed below the first connection portion,
The first duct member is
Fixed to a bonnet (70) which forms an upper part of the engine room and can be opened and closed;
When the bonnet closes the upper part of the engine room, the first connecting part and the second connecting part are connected to the shroud while the bonnet is connected to the engine. The air guide unit according to claim 1, wherein the air guide unit is separated from the shroud when the upper part of the room is open. The first duct member constitutes a part of an engine cover (72) disposed in the engine room and covering at least a part of an upper side of the traveling engine,
The wind guide unit according to any one of claims 2 to 9, wherein the engine cover is detachably fixed to the traveling engine. The air duct is interposed between the first duct member and the shroud, and forms a second duct passage (66a) for flowing air from the ventilation hole to the first duct passage (66a). 66),
The second duct member has the second connection portion on the first duct member side,
The wind guide unit according to any one of claims 2 to 11, wherein the first duct member is connected to the shroud through the second duct member.   A cooling module comprising the air guide unit (50, 60) according to any one of claims 1 to 12, the heat exchanger for cooling the engine, the blower, and the radiator. .

Images