JP2009090867A - Vehicular scavenging system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular scavenging system capable of enhancing its exhaust heat efficiency and suppressing increase of the weight, the manufacturing cost or the like with a simple structure. <P>SOLUTION: The vehicular scavenging system comprises an air-conditioning unit (a blower unit) 10 capable of blowing the outside air in a cabin R, and an air scavenging passage 20 provided between a roof outer panel 21 and a roof inner panel 22 to communicate the cabin R with a drafter grill (a drafter) 31 formed in a rear part of a vehicle. An air inlet 23 of the air scavenging passage 20 is located in a front part of the cabin R, and the air-conditioning unit 10 blows the outside air toward the air inlet 23. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle scavenging system for improving a temperature environment in a vehicle interior of a vehicle.

  Conventionally, scavenging for vehicles in which each of the side body, vehicle door, window glass, and roof is made into a double structure to form a series of air flow passages, and air inside the vehicle interior is taken into these air flow passages and discharged outside the vehicle. A system is known (see, for example, Patent Document 1).

In this vehicle scavenging system, when the air in the passenger compartment is discharged, the amount of heat stored in the air flow passage is also discharged, thereby reducing the amount of heat in the passenger compartment.
JP-A-5-338428

  By the way, in the above-described vehicle scavenging system, since the air flow passage is formed from the upper surface of the vehicle to the side portion, air having a relatively small amount of heat storage on the side portion of the vehicle must be exhausted. There was a problem that the exhaust heat efficiency deteriorated.

  In addition, in this vehicle scavenging system, the side body, door, window glass, and roof of the vehicle are each made of a double structure to form a series of air flow passages, so the structure becomes large and the weight and manufacturing cost are increased. Etc. may increase.

  Accordingly, an object of the present invention is to provide a vehicle scavenging system capable of improving exhaust heat efficiency and suppressing an increase in weight, manufacturing cost, and the like with a simple structure.

  In order to solve the above problems, a vehicle scavenging system according to the present invention is provided between a blower unit capable of blowing outside air into a vehicle interior, a roof outer panel and a roof inner panel, and the vehicle interior and the vehicle. A scavenging air passage communicating with a drafter formed at a rear portion, an air intake port of the scavenging air passage is located at a front portion of the passenger compartment, and the air blowing unit is directed toward the air intake port. A vehicle scavenging system that blows outside air.

  In addition, an air intake port of the scavenging air passage is provided in the vicinity of front ends of the roof outer panel and the roof inner panel, and an air discharge port of the scavenging air passage is formed in a rear pillar and communicates with the drafter. It may be connected to the communication duct.

  In addition, an induction blower that guides air in the scavenging air passage toward the draft may be provided between the air intake of the scavenging air passage and the drafter.

  In addition, a trunk duct communicating with the inside of the trunk room may be connected to the upstream side of the induction blower, and a shield door that is opened by air induced by the induction blower may be provided at a connection port of the trunk duct.

  Further, the air blowing unit may be an air conditioning unit for adjusting the temperature in the vehicle interior.

  According to the present invention, air accumulated between the roof outer panel and the roof inner panel is transmitted to the rear part of the vehicle by blowing the outside air by the blower unit toward the air intake port of the scavenging air passage located at the front part of the vehicle. It is discharged from the formed drafter.

  Here, since the air accumulated between the roof outer panel and the roof inner panel is in the upper part of the vehicle and has a relatively large amount of heat storage, only the air with the large amount of heat storage can be discharged and the vehicle exhaust is exhausted. It becomes possible to improve thermal efficiency.

  Moreover, since the air in the scavenging air passage is discharged by the outside air blown by the blower unit, the air in the passenger compartment is hardly disturbed, and the exhaust heat efficiency can be further improved.

  Further, since the scavenging air passage is provided between the roof outer panel and the roof inner panel, the structure can be simplified and an increase in weight, manufacturing cost, and the like can be suppressed.

  The scavenging air passage is provided near the front end of the roof outer panel and the roof inner panel, and the air discharge port of the scavenging air passage is connected to a communication duct formed in the rear pillar, so that the scavenging air passage Is formed from the front end portion of the roof outer panel and the roof inner panel to the vicinity of the rear end portion.

  Thereby, the air in the vehicle ceiling with a large heat storage amount can be sufficiently discharged, and the exhaust heat efficiency can be further improved.

  In addition, by providing an induction blower that guides air between the air intake of the scavenging air passage and the drafter, it is possible to forcibly exhaust the air in the scavenging air passage and further improve the exhaust heat efficiency. be able to.

  In addition, if this induction fan is arrange | positioned in the lower end part vicinity of a rear pillar, an induction fan will become difficult to get in the way.

  In addition, a trunk duct communicating with the inside of the trunk room is connected to the upstream side of the induction blower, and a shielding door that is opened by air is provided at the communication port of the trunk duct, so that the ventilation in the trunk room can be efficiently performed. it can.

  In addition, since the air blowing unit is an air conditioning unit that adjusts the temperature in the passenger compartment, it is possible to blow outside air into the scavenging air passage using the existing configuration, and further suppress an increase in weight and manufacturing cost. Is possible.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode of a vehicle scavenging system according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, a vehicle 1 equipped with a vehicle scavenging system according to the present invention includes an air conditioning unit (blower unit) 10, a scavenging air passage 20, a rear blower fan (induction blower) 30, And a drafter grill (drafter) 31.

  The air conditioning unit 10 takes in outside air and blows it into the passenger compartment R. As shown in FIG. 3, the front blower fan 11, the evaporator 13, the heater core 14, and the duct 2 are arranged in the duct 2. The upper vent blow grill 12, the vent blow grill 15, and the foot blow grill 16 communicated with each other, and an air conditioning controller 17 that is provided in the vehicle 1 and outputs various control signals.

  The front blower fan 11 is rotationally driven by a fan motor 11 a driven by an air conditioning controller 17 to cause the air in the duct 2 to flow, and is disposed on the upstream side of the evaporator 13. The fan motor 11a is driven when an immobilizer signal from the immobilizer system 40 or an ON signal from the air conditioner switch 41 is input to the air conditioner controller 17, and an OFF signal is input from the air conditioner switch 41 to the air conditioner controller 17. Stop at.

  On the upstream side of the front blower fan 11 of the duct 2, an inside air introduction port 18 a for introducing vehicle interior air and an outside air introduction port 18 b for introducing outside air are provided.

  An intake door D1 that opens and closes the inside air introduction port 18a and the outside air introduction port 18b at an arbitrary ratio is provided at a portion where the inside air introduction port 18a and the outside air introduction port 18b branch.

  The intake door D1 is opened and closed by an intake door actuator D1 ′ driven by the air conditioning controller 17.

  The evaporator 13 is an endothermic heat exchanger that absorbs the heat of the air introduced by the front blower fan 11 into the refrigerant to generate cold air. The heater core 14 is a heat-dissipating heat exchanger that is disposed on the downstream side of the evaporator 13 and radiates the heat of the warmed refrigerant to create warm air.

  Note that an air mix door D2 is provided on the upstream side of the heater core 14. The air mix door D2 is opened and closed by an air mix actuator D2 'driven by an air conditioning controller 17, and cooled by the evaporator 13 and then bypassed the heater core 14, and warm air heated by passing through the heater core 14. The ratio (the air volume distribution between cold air and hot air) is adjusted.

  The upper vent blowing grill 12 communicates with the duct 2 via a vent duct 2a extending from the duct 2, and is formed at the upper part of the instrument panel P so as to blow air upward.

  Further, as shown in FIG. 1, the air blown out from the upper vent blow grill 12 flows along the windshield F and is blown toward an air inlet 23 (to be described later) of the scavenging air passage 20. .

  An upper vent door D3 is provided between the vent duct 2a and the duct 2. The upper vent door D3 is opened and closed by an upper vent door actuator D3 ′ driven by the air conditioning controller 17 to adjust the amount of blown air.

  The vent blowing grill 15 and the foot blowing grill 16 are respectively formed on the instrument panel P.

  A grill switching door D4 is provided at a portion where the vent blow grill 15 and the foot blow grill 16 branch. The grill switching door D4 is opened and closed by a grill switching door actuator D4 ′ driven by the air conditioning controller 17 in response to a switching signal input by a grill switching switch (not shown).

  The air-conditioning controller 17 drives and controls the vehicle air-conditioning apparatus 1 and receives predetermined signals from the immobilizer system 40, the air-conditioner switch 41, and the like, and also has an outside air temperature sensor 43, an inside air temperature sensor 44, and a scavenging air. Detection values from various sensors such as the road temperature sensor 45 and the solar cell sensor 46 are input.

  The outside air temperature sensor 43 is a sensor that detects the outside air temperature outside the passenger compartment R, the inside air temperature sensor 44 is a sensor that detects the inside air temperature inside the passenger compartment R, and the scavenging air passage temperature sensor 45 is The solar cell sensor 46 is a sensor that detects the remaining amount of a power storage device (not shown) that will be described later.

  Here, the scavenging airway temperature sensor 45 is disposed in an interior lamp (not shown) attached to the roof inner panel 22.

  Further, the air conditioning controller 17 drives and controls a fan motor 30 a of the rear blower fan 30 and a draft door actuator D 5 ′ that opens and closes a draft door D 5 provided inside the draft grill 31.

  The scavenging air passage 20 is provided between a roof outer panel 21 that forms the outer surface of the vehicle 1 and a roof inner panel 22 that faces the roof outer panel 21 and is disposed on the vehicle interior R side.

  That is, here, a gap with a predetermined width is provided between the roof outer panel 21 and the roof inner panel 22, and the entire ceiling portion of the vehicle 1 constituted by the roof outer panel 21 and the roof inner panel 22 is formed. A scavenging air passage 20 is provided.

  The air intake 23 of the scavenging air passage 20 is formed in the vicinity of the front end portions of the roof outer panel 21 and the roof inner panel 22. As a result, the air intake 23 is located at the front portion of the vehicle 1. The air intake 23 opens into the passenger compartment R and has a slit shape along the vehicle width direction.

  The scavenging air passage 20 has a pair of air discharge ports 24, 24, and each air discharge port 24 is connected to a communication duct 32 described later. Each air discharge port 24 is formed in a portion where the ceiling portion of the vehicle 1 and the pair of rear pillars 32a and 32a are connected to each other, and is located on the side of the vehicle (see FIG. 1).

  The communication duct 32 is an air passage formed in the rear pillar 32 a, one end of which is connected to the air outlet 24 of the scavenging air passage 20, and the other end is connected to the draft grill 31 via the rear blower fan 30. .

  The rear blower fan 30 is disposed in the communication duct 32 (see FIG. 3), and guides the air in the scavenging air passage 20 toward the draft grill 31. Here, the rear blower fan 30 is disposed in the vicinity of the lower end portion of the rear pillar 32a.

  A trunk duct 33 communicating with a trunk room T formed in the vehicle 1 is connected to the upstream side of the rear blower fan 30 in the communication duct 32. A shielding door 34 is provided between the trunk duct 33 and the communication duct 32 and is opened by the air guided by the rear blower fan 30.

  The shielding door 34 is made of, for example, rubber, and is normally biased in a direction to close the trunk duct 33. When the rear blower fan 30 is driven and negative pressure is generated in the communication duct 32, the negative duct is pulled toward the communication duct 32 to open the trunk duct 33, and the trunk room T and the communication duct 32 communicate with each other. .

  The drafter grill 31 is formed at the rear of the vehicle and opens to the outside of the vehicle, and is opened and closed by a drafter door D5 provided inside the drafter grill 31.

  Further, the vehicle 1 is provided with a solar cell panel (not shown) and a power storage device (not shown) that stores electric power energy generated by the solar cell panel. This power storage device is connected to the front blower fan 11 and the rear blower fan 30 so that power can be supplied.

  Next, the operation of the vehicle scavenging system according to the present invention will be described with reference to the flowchart shown in FIG. 4 showing the flow of the in-vehicle scavenging process executed by the vehicle scavenging system. The in-vehicle scavenging process shown in FIG. 4 is executed immediately before an occupant gets into the vehicle 1.

  In step 1, it is determined whether or not an immobilizer signal is detected by the immobilizer system 40 mounted on the vehicle 1. If no immobilizer signal is detected (in the case of NO), step 1 is returned to return the immobilizer signal. Is detected (in the case of YES), the process proceeds to step 2.

  In step 2, the detected immobilizer signal is input to the air conditioning controller 17, and the process proceeds to step 3.

  In step 3, the air conditioning controller 17 to which the immobilizer signal has been input detects the inside air temperature in the passenger compartment R by the inside air temperature sensor 44, and whether the inside air temperature is equal to or higher than a predetermined temperature (X ° C.) set in advance. If the inside air temperature is lower than the predetermined temperature (in the case of NO), vehicle interior scavenging is not performed, and the vehicle interior scavenging process ends. On the other hand, when the inside air temperature is equal to or higher than the predetermined temperature (in the case of YES), the routine proceeds to step 4.

  In step 4, the air-conditioning controller 17 sets the operation mode to the scavenging mode, opens the outside air inlet 18b by the intake door D1, cuts off the air flow toward the heater core 14 by the air mix door D2, and opens the upper vent door. The vent duct 2a is opened by D3, the vent blow grill 15 is opened by the grill switching door D4, and the draft grill 31 is opened by the draft door D5. That is, each door D1-D5 will be in the state shown as the continuous line in FIG. Then, the process proceeds to step 5.

  In step 5, the fan motor 11a of the front blower fan 11 is rotationally driven. Further, in step 6, the fan motor 30a of the rear blower fan 30 is rotationally driven.

  Thereby, the outside air sucked from the outside air introduction port 18 b is discharged into the vehicle interior R via the front blower fan 11 → the evaporator 13 → the vent duct 2 a → the upper vent blowing grill 12. The outside air discharged into the passenger compartment R flows along the windshield and is blown toward the air intake 23 of the scavenging air passage 20.

  At this time, since a compressor (not shown) that supplies the refrigerant to the evaporator 13 is not driven, the sucked outside air is not cooled.

  The rear blower fan 30 is driven in the communication duct 32 to make the pressure in the communication duct 32 negative, and guides the air in the scavenging air passage 20 to the draft grill 31.

  In this manner, outside air is blown toward the air intake 23 and air in the scavenging air passage 20 is guided to the draft grill 31 by the rear blower fan 30, so that air in the scavenging air passage 20 is 1 flows from the front side toward the rear side, and then is discharged out of the vehicle through the air discharge port 24 → the communication duct 32 → the rear blower fan 30 → the draft grill 31.

  That is, the air accumulated between the roof outer panel 21 and the roof inner panel 22 is discharged from the draft grill 31 formed at the rear portion of the vehicle 1.

  Here, since the air accumulated in the scavenging air passage 20 between the roof outer panel 21 and the roof inner panel 22 is in the upper part of the vehicle 1, the heat storage amount is relatively large. Therefore, only air with a large heat storage amount can be discharged, and the exhaust heat efficiency of the vehicle 1 can be improved.

  Moreover, since the air in the scavenging air passage 20 is discharged by the outside air blown by the front air conditioning unit 10, the air in the passenger compartment R is hardly disturbed, and the exhaust heat efficiency can be further improved.

  Further, since the scavenging air passage 20 is provided between the roof outer panel 21 and the roof inner panel 22, the structure can be simplified and an increase in weight, manufacturing cost, etc. can be suppressed. .

  Further, here, the air intake 23 of the scavenging air passage 20 is provided in the vicinity of the front end portions of the roof outer panel 21 and the roof inner panel 22. Further, the air discharge port 24 of the scavenging air passage 20 is connected to a communication duct 32 formed in the rear pillar 32a. Thus, the scavenging air passage 20 is formed from the front end portion of the roof outer panel 21 and the roof inner panel 22 to the vicinity of the rear end portion. That is, the entire ceiling portion of the vehicle 1 is the scavenging air passage 20.

  Thereby, the air in the ceiling of the vehicle 1 having a large heat storage amount can be sufficiently discharged, and the exhaust heat efficiency can be further improved.

  Moreover, since an air layer is provided in the ceiling part of this vehicle 1, it becomes possible to improve the heat insulation of the vehicle 1, and the temperature change in the compartment R can be suppressed efficiently.

  Here, a rear blower fan 30 for guiding the air in the scavenging air passage 20 is provided between the air inlet 23 of the scavenging air passage 20 and the draft grill 31. For this reason, the air in the scavenging air passage 20 can be forcibly exhausted, and the exhaust heat efficiency can be further improved.

  Since the rear blower fan 30 is disposed in the vicinity of the lower end of the rear pillar 32a, the rear blower fan 30 is unlikely to get in the way and the design of the vehicle 1 is not impaired.

  Furthermore, at this time, the shielding door 34 is pulled by the negative pressure generated in the communication duct 32 by the rear blower fan 30 to open the trunk duct 33, and the trunk room T and the communication duct 32 communicate with each other.

  As a result, the air in the trunk room T is discharged outside the vehicle through the trunk duct 33 → the communication duct 32 → the rear blower fan 30 → the draft grill 31. Therefore, ventilation in the trunk room T can also be performed efficiently.

  After exhausting the air in the scavenging air passage 20 in this way, in step 7, it is determined whether or not the temperature in the scavenging air passage 20 is equal to or lower than the outside air temperature. This determination is performed by the air conditioning controller 17 comparing the outside air temperature input from the outside air temperature sensor 43 with the scavenging air passage temperature input from the scavenging air passage temperature sensor 45.

  If the scavenging air path temperature is higher than the outside air temperature (in the case of NO), the process returns to step 4. On the other hand, when the scavenging air path temperature is equal to or lower than the outside air temperature (in the case of YES), the routine proceeds to step 8.

  In step 8, the fan motor 11a of the front blowing fan 11 is stopped. Further, in step 9, the fan motor 30a of the rear blower fan 30 is stopped. And this in-vehicle scavenging process is complete | finished.

  Next, the in-vehicle scavenging process executed in the vehicle 1 parked for a predetermined time will be described along the flowchart shown in FIG.

  In step 10, it is determined whether or not a predetermined time has elapsed since the vehicle 1 stopped. If the predetermined time has not elapsed (in the case of NO), step 10 is returned, and the predetermined time has elapsed. If yes (YES), go to Step 11.

  In step 11, it is determined whether or not the electric power energy stored in the power storage device (not shown) is 12V or more. In the case of (YES), the process proceeds to step 12.

  Here, the determination threshold is set to 12 V, but it is sufficient if there is electric power energy required to drive the front blower fan 11 and the rear blower fan 30.

  In step 12, the air conditioning controller 17 detects the inside air temperature in the passenger compartment R by the inside air temperature sensor 44, and determines whether or not the inside air temperature is equal to or higher than a predetermined temperature (X ° C.) set in advance. However, if the inside air temperature is lower than the predetermined temperature (in the case of NO), the vehicle interior scavenging is not performed, and the vehicle interior scavenging process ends. On the other hand, when the inside air temperature is equal to or higher than the predetermined temperature (in the case of YES), the routine proceeds to step 13.

  In step 13, the air conditioning controller 17 sets the operation mode to the scavenging mode, drives the doors D <b> 1 to D <b> 5 in the same manner as in step 4 described above, and proceeds to step 14.

  In step 14, the fan motor 11a of the front blower fan 11 is rotationally driven. Further, in step 15, the fan motor 30a of the rear blower fan 30 is rotationally driven.

  Thereby, the outside air sucked from the outside air introduction port 18 b is discharged into the vehicle interior R via the front blower fan 11 → the evaporator 13 → the vent duct 2 a → the upper vent blowing grill 12. The outside air discharged into the passenger compartment R flows along the windshield and is blown toward the air intake 23 of the scavenging air passage 20.

  Furthermore, after the air in the scavenging air passage 20 flows from the front side to the rear side of the vehicle 1, the air passes through the air discharge port 24 → the communication duct 32 → the rear blower fan 30 → the draft grill 31 in order. It is discharged outside the car.

  In step 16, the air conditioning controller 17 determines whether or not the temperature in the scavenging air passage 20 is equal to or lower than the outside air temperature. If the scavenging air passage temperature is higher than the outside air temperature (in the case of NO), Return to step 13. On the other hand, when the scavenging air path temperature is equal to or lower than the outside air temperature (in the case of YES), the routine proceeds to step 17.

  In step 17, the fan motor 11a of the front blowing fan 11 is stopped. Further, in step 18, the fan motor 30a of the rear blower fan 30 is stopped. And this in-vehicle scavenging process is complete | finished.

  In this way, even when the vehicle 1 is parked, the temperature in the passenger compartment R is prevented from excessively rising by scavenging the scavenging air passage 20 every predetermined time. can do.

  As mentioned above, although embodiment concerning this invention has been explained in full detail with drawing, a concrete structure is not restricted to the above-mentioned embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  For example, in the above-described embodiment, the front blower fan 11 and the rear blower fan 30 are stopped when the scavenging air path temperature is equal to or lower than the outside air temperature, but this is not a limitation. The front blower fan 11 and the rear blower fan 30 may be stopped after a predetermined time (for example, 30 seconds) regardless of the scavenging air passage temperature.

  Further, in the above-described embodiment, the outside air is blown by the air conditioning unit 10 provided in the vehicle 1. However, for example, the blowing unit only for blowing the outside air toward the air inlet 23 of the scavenging air passage 20. May be provided in the vehicle 1.

  In addition, like the above-mentioned embodiment, it is possible to further suppress an increase in weight, manufacturing cost, and the like by blowing outside air using the existing air conditioning unit 1.

  Further, the drafter grill 31 may be formed, for example, in the vicinity of the rear end portions of the roof outer panel 21 and the roof inner panel 22, that is, in the rear end portion of the ceiling portion of the vehicle 1.

  In this case, the air discharge port 24 of the scavenging air passage 20 can be connected to the draft grill 31 without using the communication duct 32, and the exhaust efficiency can be increased.

1 is a plan view showing a vehicle to which a vehicle scavenging system according to the present invention is applied. 1 is a side view showing a vehicle to which a vehicle scavenging system according to the present invention is applied. It is a block diagram which shows the structure of the scavenging system for vehicles which concerns on this invention. It is a flowchart which shows the flow of the in-vehicle scavenging process performed with the scavenging system for vehicles which concerns on this invention. It is a flowchart which shows the flow of the in-vehicle scavenging process performed after parking for a predetermined time.

Explanation of symbols

10 Air conditioning unit (fan unit)
20 Scavenging air passage 21 Roof outer panel 22 Roof inner panel 23 Air intake 31 Draughter grill (drafter)
R compartment

Claims (5)

A blower unit capable of blowing outside air into the vehicle interior, a scavenging air passage that is provided between the roof outer panel and the roof inner panel, and communicates between the vehicle interior and a drain formed at the rear of the vehicle;
An air intake port of the scavenging air passage is located at a front portion of the passenger compartment,
The scavenging system for a vehicle, wherein the blower unit blows outside air toward the air intake. An air intake port of the scavenging air passage is formed in the vicinity of front end portions of the roof outer panel and the roof inner panel,
2. The vehicle scavenging system according to claim 1, wherein an air discharge port of the scavenging air passage is connected to a communication duct that is formed in a rear pillar and communicates with the drafter. 3.   The induction blower for guiding the air in the scavenging air passage toward the draft is provided between the air intake port of the scavenging air passage and the drafter. Vehicle scavenging system.   A trunk duct communicating with the interior of the trunk room is connected to the upstream side of the induction blower, and a connecting door of the trunk duct is provided with a shielding door that is opened by air induced by the induction blower. The vehicle scavenging system according to claim 3. The scavenging system for a vehicle according to any one of claims 1 to 4, wherein the air blowing unit is an air conditioning unit for adjusting a temperature in the vehicle interior.

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