JP2011195063A - Cabin component cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabin component cooling device capable of lowering the temperature of cabin components, and also capable of efficiently lowering the temperature of a cabin.SOLUTION: The cabin component cooling device includes an intake duct 3 extended into an instrument panel 9, and an exhaust flow passage 7. A cooling flow passage 9a is formed in the instrument panel 9. The exhaust flow passage 7 is connected to an opening 7a formed on the instrument panel 9. The opening 7a is communicated with the cooling flow passage 9a. The exhaust flow passage 7 is formed so as to be extended to a rear pillar from a front pillar via a roof while being separated from the cabin CR, and opened to the outside of a vehicle by an exhaust port 7b at the rear of the vehicle. Then, in the cooling device, the air whose temperature is raised by cooling the instrument panel 9 or the like is not blown out into the cabin CR, and the temperature in the cabin CR can sufficiently be lowered.

Description

  The present invention relates to a passenger compartment cooling device capable of cooling passenger compartment components such as an instrument panel.

  Conventionally, what was indicated by patent documents 1 is known as a cabin component cooling device which can cool cabin components, such as an instrument panel. This cooling device is provided with a ventilation flow path that extends from an outside air inlet opening outside the vehicle to the vehicle outlet through the instrument panel.

  According to this cooling device, the outside air sucked from the outside air inlet can be guided into the instrument panel. For this reason, the temperature of the instrument panel which became high temperature by solar radiation can be lowered by the outside air, and thus the temperature of the passenger compartment can be lowered.

JP 2006-27461 A

  However, in the above-described conventional cooling device, since the ventilation channel connects the inside of the instrument panel and the vehicle interior outlet, air whose temperature has been increased by cooling the instrument panel is blown out from the vehicle interior outlet into the vehicle interior. The cabin temperature cannot be lowered sufficiently.

  The present invention has been made in view of the above-described conventional circumstances, and provides a vehicle compartment component cooling device that can reduce the temperature of vehicle compartment components and can also effectively reduce the temperature of vehicle compartments. Providing is a problem to be solved.

  The vehicle compartment component cooling device of the present invention communicates an intake air passage that communicates between an outside air intake opening that opens outside the vehicle and the interior of the vehicle compartment, and a discharge port that opens inside the vehicle compartment component and outside the vehicle. An exhaust passage extending apart from the chamber is provided (claim 1).

  According to the cooling device of the present invention, the outside air sucked from the outside air suction port can be guided into the vehicle compartment component by the intake passage. For this reason, the temperature of the passenger compartment components that have become hot due to solar radiation can be lowered by the outside air. The outside air whose temperature has been raised by cooling the passenger compartment components is discharged outside the vehicle through the discharge port in a state separated from the passenger compartment by the exhaust passage. For this reason, the outside air whose temperature has been increased by the vehicle interior components is not blown into the vehicle interior, and the temperature of the vehicle interior can be sufficiently lowered.

  Therefore, according to the passenger compartment cooling device of the present invention, the temperature of the passenger compartment can be lowered and the temperature of the passenger compartment can also be effectively lowered.

  The vehicle interior component means a member exposed to the vehicle interior such as an instrument panel, a door lining, and a ceiling.

  As the intake passage and the exhaust passage, for example, an intake duct and an exhaust duct can be adopted. In addition, an intake passage and an exhaust passage can be formed in the vehicle.

  The exhaust passage is preferably formed between a vehicle frame and a member that is continuous with the vehicle compartment component and divides the room. Thereby, an excess convex part is not produced in a vehicle interior, but a vehicle interior can be made to feel spacious. As a member which divides a vehicle interior, the interior material of a vehicle interior is mentioned, for example. Examples of the vehicle frame include a front pillar, a door, and a roof adjacent to the instrument panel. Further, an exhaust duct may be provided between the vehicle frame and the interior material.

  The vehicle compartment component cooling device of the present invention includes an outside air guide passage that branches from an intake passage downstream of the outside air inlet, an air conditioning chamber that communicates with the outside air guide passage, and a fan that is provided in the air conditioning chamber. It is preferable that a merging channel that merges from the air conditioning chamber to the intake channel is provided.

  In this case, when the traveling speed of the vehicle is low, or when the vehicle is stopped or parked, it is possible to cool the passenger compartment components by creating a flow in the outside air by the fan. On the other hand, when the vehicle is traveling at a certain speed or higher, the passenger compartment components can be cooled by the outside air from the traveling. For this reason, it is not always necessary to operate the fan.

  The vehicle interior component cooling device of the present invention communicates with an air conditioning chamber and has an internal air guide channel having an internal air intake opening that opens to the vehicle interior, and a ventilation flow channel that communicates with the air conditioning chamber and has an interior air outlet that opens into the vehicle interior. (Claim 4).

  In this case, the passenger compartment components can be cooled by the inside air. In addition, it is possible to perform air conditioning in the vehicle interior by guiding the outside air and the inside air into the vehicle interior through the ventilation channel. Furthermore, in addition to providing a fan for guiding the outside air into the vehicle interior components and the vehicle interior and a fan for guiding the inside and outside air into the vehicle interior components and the vehicle interior, respectively, the fan alone provided in the air conditioning room It is also possible to guide the inside air into the passenger compartment components and the passenger compartment. In the case where the outside air and the inside air are led into the vehicle interior components or the vehicle interior by a single fan provided in the air conditioning room, the manufacturing cost can be reduced. It should be noted that the vehicle compartment component can be cooled by only one of the outside air and the inside air, and the vehicle compartment component can be cooled by the outside air and the inside air. Similarly, the vehicle interior can be air-conditioned only with either the outside air or the inside air, and the vehicle interior can be air-conditioned with the outside air and the inside air.

  It is preferable that a heat exchanger is provided in the air-conditioned room. In this case, it is possible to cool the passenger compartment components and to air-condition the passenger compartment with the outside air or the inside air whose temperature has been adjusted.

  It is preferable that the outside air inlet is open in the traveling direction of the vehicle. In this case, outside air can be suitably sucked into the outside air intake port while the vehicle is traveling, and the passenger compartment components can be easily cooled.

  It is preferable that the discharge port is open on a surface of the vehicle outer surface facing the rear of the vehicle. In this case, the air (outside air and / or inside air) that has cooled the passenger compartment components can be suitably discharged outside the vehicle. For this reason, it is possible to take in air suitably in an instrument panel. Note that the discharge port may be open on either the inclined surface or the vertical surface as long as it faces the rear of the vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall schematic side view of a vehicle compartment component cooling device according to a first embodiment. 1 is a schematic structural diagram showing a part of a compartment component cooling device of Embodiment 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view illustrating a part of a passenger compartment according to a passenger compartment cooling device of a first embodiment. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a part of a vehicle according to a passenger compartment cooling device of a first embodiment. 1 is a schematic structural diagram showing a part of a compartment component cooling device of Embodiment 1. FIG. 1 is a schematic structural diagram showing a part of a compartment component cooling device of Embodiment 1. FIG. 1 is a schematic structural diagram showing a part of a compartment component cooling device of Embodiment 1. FIG. It is a sectional view from the side showing a part of a passenger compartment concerning a compartment component cooling device of Example 2.

  Embodiments 1 and 2 embodying the present invention will be described below with reference to the drawings.

Example 1
As shown in FIG. 1, the passenger compartment cooling device (hereinafter referred to as a cooling device) according to the first embodiment is mounted on a vehicle such as a hybrid vehicle or an electric vehicle. This cooling device includes an intake duct 3, an air conditioning case 5, an exhaust passage 7, and the like.

  The intake duct 3 has an outside air intake port 3a in a front grill portion in front of the vehicle. For this reason, it is possible to allow outside air to be sucked into the intake duct 3 when the vehicle travels (forward). The intake duct 3 corresponds to an intake passage.

  As shown in FIG. 2, the intake duct 3 is connected to an outside air guide duct 11 that branches at a position downstream of the outside air inlet 3a. The outside air guide duct 11 is connected to the air conditioning case 5, and the downstream side of the air conditioning case 5 is connected to the junction duct 13. The merge duct 13 merges with the intake duct 3 on the downstream side of the outside air guide duct 11. The outside air guide duct 11 and the junction duct 13 correspond to an outside air guide channel and a junction channel, respectively.

  In this cooling device, an inside air guide duct 15 is connected to the upstream side of the air conditioning case 5. The inside air guide duct 15 has an inside air inlet 15a that opens to the passenger compartment CR (see FIG. 1). The downstream side of the air conditioning case 5 is connected to a ventilation duct 17 that extends into the passenger compartment CR. The ventilation duct 17 has an in-vehicle outlet 17a that opens to the passenger compartment CR. The inside air guide duct 15 corresponds to an inside air guide channel, and the ventilation duct 17 corresponds to a ventilation channel.

  The air conditioning case 5 is disposed in an engine (motor) room of the vehicle. An air conditioning room 5 a is formed in the air conditioning case 5. The air conditioning chamber 5a has a movable wall 19 on the upstream side, and can selectively communicate the inside air guide duct 15 or the outside air guide duct 11 with the air conditioning chamber 5a. An electric fan 21 and an in-vehicle heat exchanger 23 are arranged in the air conditioning room 5a. Further, first and second butterfly valves 25a and 25b are arranged on the downstream side of the air conditioning chamber 5a. The air conditioning chamber 5 a communicates with the merging duct 13 and the ventilation duct 17 through the first and second butterfly valves 25 a and 25 b. The movable wall 19, the electric fan 21, and the first and second butterfly valves 25a and 25b are electrically connected to a control device (not shown). Under the control of the control device, the first and second butterfly valves 25a and 25b can each adjust the opening. Instead of the first and second butterfly valves 25a and 25b, an on-off valve having another configuration can be adopted.

  In this cooling device, by controlling the movable wall 19 and the first and second butterfly valves 25a and 25b, not only the outside air is guided to the intake duct 3 through the merging duct 13, but also the inside air is circulated through the merging duct 13. It is also possible to guide to the intake duct 3. Further, not only the inside air can be guided into the passenger compartment CR via the ventilation duct 17 but also the outside air can be guided into the passenger compartment CR via the ventilation duct 17. Furthermore, it is possible to guide outside air or inside air to both the merging duct 13 and the ventilation duct 17.

  The in-vehicle heat exchanger 23 is connected to a heat storage tank (not shown), and cools the air in the air-conditioning room 5a by causing cold water or the like in the heat storage tank to flow into the in-vehicle heat exchanger 23 by a pump (not shown). It is possible. The configuration of the in-vehicle heat exchanger 23 is the same as that of a well-known in-vehicle heat exchanger, and a detailed description regarding the configuration of the in-vehicle heat exchanger 23 is omitted. The pump is electrically connected to a control device (not shown).

  As shown in FIG. 3, the intake duct 3 extends into the instrument panel 9 on the downstream side of the air conditioning case 5, and the air in the intake duct 3 can be introduced into the instrument panel 9. Yes. A cooling flow path 9 a is formed in the instrument panel 9. In addition, an opening 7 a communicating with the cooling flow path 9 is opened in the instrument panel 9. The opening 7a is connected to an exhaust passage 7 provided in the front pillar of the vehicle. In addition, the instrument panel 9 can be comprised by the double wall which consists of an outer wall and an inner wall, and the cooling flow path 9a can also be formed between an outer wall and an inner wall.

  As shown in FIG. 1, the exhaust flow path 7 is formed between a vehicle frame of a front pillar, a roof, and a rear pillar, and an interior material that partitions the passenger compartment CR. The exhaust passage 7a is formed so as to extend from the front pillar through the roof and into the rear pillar, and is opened to the outside of the vehicle by a discharge port 7b at the rear of the vehicle. The exhaust passage 7 is formed so as to spread in the vehicle width direction when the air flowing through the exhaust passage 7 flows through the roof. Thereby, the ceiling of the passenger compartment can be cooled by the air flowing in the exhaust passage 7.

  Further, as shown in FIG. 4, the discharge port 7 b is open on the surface facing the rear of the vehicle at the rear of the vehicle.

  In the cooling apparatus configured as described above, as shown in FIG. 2, when the vehicle travels, the control device operates the partition wall 19 so that the outside air guide duct 11 and the air conditioning chamber 5 a are not in communication. Further, the first and second butterfly valves 25a and 25b are closed. As a result, the outside air sucked from the outside air inlet 3a flows in the intake duct 3 in the direction of the one-dot chain line in FIG. 2, and is guided into the cooling flow path 9a (see FIG. 2).

  In this cooling device, the control device operates the movable wall 19 and the first butterfly valve 25a, so that the outside air guide duct 11, the junction duct 13 and the air conditioning chamber 5a can be communicated with each other as shown in FIG. It has become. In this state, the control device operates the electric fan 21 so that the outside air can be guided into the cooling flow path 9a even when the traveling speed of the vehicle is low (see the dashed line arrow in FIG. 5).

  Further, in the state shown in FIG. 5, the outside air in the air conditioning chamber 5 a is cooled by the indoor heat exchanger 23 when the control device operates the pump. Thereby, it becomes possible to guide the cooled outside air into the cooling flow path 9a. At this time, it is also possible for the control device to open the second butterfly valve 25b to guide the outside air cooled in the air conditioning chamber 5a from the indoor guide duct 17 into the vehicle interior CR. Note that the control device operates or stops the electric fan 21 according to the traveling speed of the vehicle.

  On the other hand, when the vehicle is parked, the control device operates the movable wall 19 and the first butterfly valve 25a to achieve the state shown in FIG. In this state, the control device operates the electric fan 21. Thereby, it becomes possible to guide outside air into the cooling flow path 9a during parking.

  Further, in this cooling device, the control device operates the movable wall 19 and the first butterfly valve 25a to allow the inside air guide duct 15 and the junction duct 13 to communicate with the air conditioning chamber 5a as shown in FIG. Is possible. In this state, the control device operates the electric fan 21. As a result, it is also possible to guide the inside air into the cooling flow path 9a (see the dashed line arrow in FIG. 6). At this time, the control device operates the pump to guide the inside air cooled by the indoor heat exchanger 23 into the cooling flow path 9a. Further, as shown in FIG. 7, the control device also opens the second butterfly valve 25b, so that the cooled inside air can be guided into the passenger compartment CR (see the dashed line arrow in FIG. 7). . When the vehicle is traveling, the state shown in FIGS. 6 and 7 can be used to guide the inside air into the cooling flow path 9a.

  As described above, in this cooling device, by introducing these air into the cooling flow path 9a by the intake duct 3, the temperature of the instrument panel 9 that has become high due to solar radiation is caused by the air flowing in the cooling flow path 9a. Can be lowered. The air whose temperature has been increased by cooling the instrument panel 9 is discharged outside the vehicle through the discharge port 7a while being separated from the vehicle compartment CR by the exhaust passage 7. Specifically, the air in the exhaust duct 7 flows through the outside of the interior material, that is, the front pillar, the roof, and the rear pillar in the direction of the one-dot chain line shown in FIG. As described above, since the air flowing in the roof flows in the vehicle width direction, the temperature of the ceiling of the passenger compartment CR can be lowered together with the instrument panel 9 in this cooling device. And the air in the exhaust flow path 7 will be discharged | emitted outside the vehicle from the discharge port 7b opened behind the vehicle. For this reason, the air whose temperature has been increased by the instrument panel 9 or the like is not blown into the passenger compartment CR, and the temperature of the passenger compartment CR can be sufficiently lowered.

  Further, in this cooling device, air can be guided into the passenger compartment CR by the ventilation duct 17. As a result, air conditioning in the passenger compartment CR is also possible.

  Therefore, according to this cooling device, the temperature of the ceiling of the instrument panel 9 and the passenger compartment CR can be lowered, and the temperature of the passenger compartment CR can also be effectively reduced.

  In particular, in this cooling device, the exhaust flow path 7 is formed between the vehicle frame of the front pillar, roof, and rear pillar of the vehicle and the interior material that defines the compartment CR. As a result, no extra convex portion is formed in the passenger compartment CR, and the passenger compartment CR can be made spacious.

  Further, in this cooling device, the electric fan 21 can guide outside air and inside air into the cooling flow path 9a and the vehicle interior CR. For this reason, it is not necessary to separately provide a fan for cooling the instrument panel 9. For this reason, the manufacturing cost of the cooling device can be reduced.

  Moreover, in this cooling device, since the heat exchanger 23 for in-vehicles is provided in the air-conditioning room 5a, it is possible to cool the instrument panel 9 and the like and to air-condition the inside of the passenger compartment CR with the temperature-adjusted air. it can.

  Furthermore, in this cooling device, the outside air inlet 3a is open to the front grille in front of the vehicle. For this reason, outside air can be suitably inhaled into the outside air inlet 3a while the vehicle is traveling, and the instrument panel 9 is easily cooled.

  Further, in this cooling device, as shown in FIG. 4, an exhaust port 7 b is opened on the rear surface of the vehicle and facing the rear of the vehicle. For this reason, it becomes possible to draw out the air in the exhaust passage 7 by the driving wind of the vehicle (see the solid line arrow in FIG. 4), and the air that has cooled the ceiling of the instrument panel 9 and the cabin CR is suitably discharged outside the vehicle. can do. For this reason, air can be suitably taken into the cooling flow path 9a.

(Example 2)
As shown in FIG. 8, the cooling device of the second embodiment includes an exhaust duct 70 instead of the exhaust passage 7 in the cooling device of the first embodiment. In this vehicle, an instrument panel 90 is provided instead of the instrument panel 9. A cooling flow path 90 a is formed in the instrument panel 90.

  The exhaust duct 70 is connected to an opening 70 a opened in the instrument panel 90. The opening 70a communicates with the cooling channel 90a. The exhaust duct 70 extends into the engine (motor) room, and is opened outside the vehicle by a discharge port 70b in the front tire housing 2. The instrument panel 90 may also be configured by a double wall made up of an outer wall and an inner wall, and a cooling channel 90a may be formed between the outer wall and the inner wall. Other configurations are the same as those of the cooling device of the first embodiment, and the same reference numerals are given to the same configurations, and detailed description of the configurations is omitted.

  In this cooling device, the air whose temperature has been increased by cooling the instrument panel 90 is discharged from the front tire housing 2 to the outside of the vehicle (see the dashed line arrow in FIG. 8). Other functions and effects are the same as those of the cooling device of the first embodiment.

  Thus, this cooling device has a simplified structure as compared with the cooling device of the first embodiment. For this reason, manufacture of a cooling device becomes easy and reduction of manufacturing cost is also easy.

  In the above, the present invention has been described with reference to the first and second embodiments. However, the present invention is not limited to the first and second embodiments, and can be appropriately modified and applied without departing from the spirit of the present invention. Needless to say.

  For example, in the cooling device of the first and second embodiments, the air conditioning case 5, the outside air guide duct 11, the merging duct 13, the inside air guide duct 15, and the ventilation duct 17 can be provided.

  In addition, instead of the movable wall 19 in the cooling devices of the first and second embodiments, the outside air guide duct 11 and the inside air guide duct 15 may be provided with on / off valves such as butterfly valves. In this case, the operation of each butterfly valve not only selectively guides the outside air or the inside air into the cooling channel 9a or the cabin CR, but also both the outside air and the inside air into the cooling channel 9a and the cabin CR. It is also possible to guide.

  Further, in the cooling devices of the first and second embodiments, the intake duct 3 is configured to extend from the front pillar to the roof, and the exhaust flow path 7 or the exhaust duct 70 is configured to extend from the roof to the rear pillar. You can also. In this case, it is possible to cool only the ceiling of the passenger compartment CR.

  The intake duct 3 can also be configured to extend from the frame on the side of the vehicle to the door. In this case, the lining of the door, that is, the side surface of the passenger compartment CR can be cooled. In addition, the exhaust flow path 7 or the exhaust duct 70 can be formed between the door and the lining of the door, and the discharge ports 7b and 70b can be configured to open on the side surface of the door.

  In the cooling devices of the first and second embodiments, the outside air inlet 3a can be opened in the front bumper, bonnet, roof, or the like of the vehicle.

  Furthermore, in the cooling device of the first embodiment, the discharge port 7a can be opened in a vehicle roof, a rear bumper, or the like. When the discharge port 7a is provided on the surface facing the rear of the vehicle below the rear bumper, the air in the exhaust passage 7 is preferably discharged by the outside air flowing on the lower surface of the vehicle during traveling. .

  In the cooling device of the second embodiment, the exhaust port 70b may be configured to open in the engine (motor) room. In this case, it is possible to cool the engine (motor) in the engine (motor) room.

  Moreover, in the cooling apparatus of Example 1, 2, the indoor heat exchanger 23 can also be connected with the refrigerating circuit provided with the compressor etc. In addition, a heat exchanger for heating can be provided in the air conditioning room 5a.

  The present invention is applicable to passenger cars, trucks and the like.

3a ... Outside air inlet 9, 90 ... Instrument panel (vehicle compartment component)
3 ... Intake duct (intake channel)
7b, 70b ... discharge port CR ... vehicle compartment 7 ... exhaust passage 70 ... exhaust duct (exhaust passage)
5a ... Air conditioning room 21 ... Electric fan (fan)
13 ... Merging duct (merging channel)
15a ... Inside air inlet 15 ... Inside air guide duct (inside air guide channel)
17a: Car outlet 17 ... Ventilation duct (ventilation flow path)
23. Indoor heat exchanger (heat exchanger)

Claims (7)

  An intake passage that communicates between an outside air intake opening that opens to the outside of the vehicle and the interior of the passenger compartment, and an exhaust passage that communicates between the interior of the passenger compartment and the exhaust opening that opens to the outside of the vehicle, and that is separated from the passenger compartment. A passenger compartment cooling device comprising:   2. The vehicle interior component cooling device according to claim 1, wherein the exhaust flow path is formed between a vehicle frame and a member that is continuous with the vehicle interior component and defines the interior of the vehicle.   An outside air guide channel that branches from the intake channel downstream of the outside air intake port, an air conditioning chamber that communicates with the outside air guide channel, a fan provided in the air conditioning chamber, and the intake air from the air conditioning chamber The vehicle interior component cooling device according to claim 1, further comprising a merge flow channel that merges with the flow channel.   An internal air guide channel that communicates with the air conditioning chamber and has an internal air intake opening that opens into the vehicle compartment, and a ventilation channel that communicates with the air conditioning chamber and has an interior air outlet that opens into the vehicle interior. 3. The vehicle interior component cooling device according to 3.   The vehicle interior component cooling device according to claim 3 or 4, wherein a heat exchanger is provided in the air conditioning chamber.   The vehicle interior component cooling device according to any one of claims 1 to 5, wherein the outside air inlet is open in a traveling direction of the vehicle.   The vehicle interior component cooling device according to any one of claims 1 to 6, wherein the discharge port is open on a surface of the vehicle outer surface facing the rear of the vehicle.

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