JPH0325020A - Forced ventilation system of automobile - Google Patents

Abstract

PURPOSE:To enable ventilation by means of an usual differential pressure so as to prevent the worsening of door opening/closing performance by constructing the system in the title provided with a forced ventilation device at the rear portion of an automobile in such a way that when a control circuit is made off with a ventilation port closed, a ventilation door is opened first then the control circuit is made off. CONSTITUTION:When a ventilation port 7 is closed, and off-signal is input from a key switch 30 or a system switch 31, a control circuit 29 drives and controls an actuator 19 to drive and open a ventilating door 18 to open the ventilation port 7. After the ventilation port 7 is opened the control circuit is set off. According to this construction, ventilation by means of an usual differential pressure can be performed and also the opening/closing performance of a door 18 can be prevented from worsening.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a forced ventilation system for an automobile that is provided with a forced ventilation device at the rear of the vehicle compartment. (Prior Art) Generally, in the ventilation system of automobiles such as passenger cars, outside air is introduced from the cowl top grille 1 into the air conditioning duct (not shown) of the air conditioner, as shown by arrow A in FIG. The introduced outside air flows from the defroster air outlet 3 and vent air outlet 4 of the instrument panel 2 to the vehicle interior 5.
It is blown out inside. Moreover, in this ventilation system, the air introduced into the passenger compartment 5 is released from the air outlet 9a provided in the rear fender 9 via the ventilation port 7 provided in the bar cell shelf 6 at the rear of the passenger compartment and the trunk room 8. (See Japanese Unexamined Patent Publication No. 103218/1983). In the above air conditioner, the opening of the air conditioning duct to the air outlet 3.4 is provided so that it can be opened and closed by a door (not shown), and each door is provided so that it can be driven to open and close by an actuator. . Moreover, the drive control of this actuator is performed by a control circuit 1o including a central processing circuit (hereinafter referred to as CPU) as shown in FIG. 7, for example. When an actuation signal is input from a door switch provided on an operation panel (not shown) to the control circuit 10 via the wiring 10a, the control signal is sent from the control circuit 10 to the actuator 11 corresponding to each door (for convenience, only one This actuator 11 drives and controls each of the above-mentioned doors (not shown). The control circuit 1o is connected in series to a power source (not shown) via a key switch 12 and a system switch 13, and is activated when both the key switch 12 and the system switch 13 are turned on. It is supposed to be done. Moreover, each door described above has a control circuit 1o of 0.
It is set to maintain the state it was in when it was turned off.

Conventionally, such ventilation systems have been considered to include a forced ventilation system at the rear of the passenger compartment. In this forced ventilation system, the ventilation port 7 is provided so that it can be opened and closed by the door, and a proa fan (not shown) is used to draw air from the vehicle interior into the suction port 1.
4, and the sucked air is forcibly circulated into the vehicle interior through the exhaust port 15, or the sucked air is forcibly discharged to the outside of the vehicle via the trunk room 8. In this forced ventilation system, during forced ventilation, ventilation port 7
When using the vehicle with the door closed, the ventilation port 7 is left open during other normal ventilation, and the air inside the vehicle is pumped using the differential pressure between the pressure inside the vehicle and the pressure on the side of the trunk room 8, that is, atmospheric pressure. The air is discharged from the ventilation opening 7 to the outside of the vehicle via the trunk room 8.

(Problem to be Solved by the Invention) By the way, it is also conceivable to control the opening and closing of the ventilation door of such a forced ventilation system using the above-mentioned control circuit 1o. However, if either the key switch 12 or the system switch 13 is turned OFF while the ventilation port 7 is opened by the ventilation door, the ventilation port 7 will remain closed by the ventilation door. , ventilation performance deteriorates due to the normal pressure difference, causing various problems. In particular, when the outside air temperature is low and the ventilation performance deteriorates as described above, there is a problem that the window glass WG becomes foggy, which is not desirable. In addition, when the ventilation performance decreases as described above, the airtightness of the vehicle interior increases, and the opening/closing resistance of the front door FD, rear door RD, etc. due to the air in the city room 5 increases, and the opening/closing performance of the doors decreases. The problem was that it was getting worse.

Therefore, this invention turns off the control circuit in the forced ventilation state.
The object of the present invention is to provide a forced ventilation system for an automobile that automatically opens the ventilation openings that are closed by the ventilation doors when the vehicle is closed, and performs ventilation using the normal pressure difference. (Means for Solving the Problems) Based on this object, the present invention provides a ventilation passage communicating with a rear part of the vehicle interior and a trunk room, the ventilation passage communicating with the rear part of the vehicle interior and the trunk room being provided in a partition section that partitions the rear part of the vehicle interior and the trunk room. The opening end of the vehicle compartment side is provided with a ventilation door that can be opened and closed, and the ventilation door is provided so that its opening/closing drive can be controlled by a control circuit, and a forced ventilation device is disposed at the rear of the vehicle compartment, A first branch discharge passage that opens into the rear part of the room and a second branch discharge passage that communicates with the ventilation passage are connected to the discharge port of the forced ventilation device, and the first and second branch discharge passages are switched open and closed. A forced ventilation system for an automobile is provided with a switching door that allows the ventilation opening to be opened, the control circuit driving the ventilation door when an OFF signal is input to the control circuit when the ventilation opening is opened. This system is characterized by a forced ventilation system for automobiles that is set to turn off after the ventilation openings are opened. (Function) According to this configuration, the first branch passage is opened by the switching door during forced ventilation. At this time, the control circuit senses the opening state of the first branch discharge passage by the switching door,
By driving and controlling the actuator, the opening end of the ventilation passageway to the rear of the vehicle compartment is closed by the switching door. Meanwhile, when the OFF signal is input to the control circuit when the ventilation port is opened, the control circuit drives the ventilation door to open the ventilation port and then turns off.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 5. [First Example] FIGS. 1 to 4 show a first example of this invention. It is something.

Figure 4 schematically shows the entire ventilation system. In this ventilation system, as shown by arrow A, outside air is introduced from the cowl top grille 1 into the air conditioning duct (not shown) of the air conditioner, and this introduced outside air flows through the differential floor of the instrument panel 2. The air is blown out into the passenger compartment 5 from the star air outlet 3 and the vent air outlet 4.

In addition, 6 is a ventilation opening provided in the rear part of the compartment 5 or the parcel shelf, 7 is a ventilation opening provided in the parcel shelf 6, and 8 is a ventilation opening provided in the compartment 5.
In the rear trunk room, 9 is a rear fender, and 9a is an air outlet provided in the rear fender 9.

As shown in FIGS. 1 and 2, the rear part of the vehicle compartment 5 and the trunk room 8 are divided by a parcel shelf 6 and a partition wall 16, and a ventilation hole 16a is formed in the upper part of the partition wall 16. Furthermore, this partition wall 16 and Basel Shelf 6
constitutes a partition that separates the rear part of the vehicle compartment 5 from the trunk room 8. A ventilation passage 17 is formed in this partition, which opens into the ventilation port 7 and the ventilation port 16a and communicates with the rear of the vehicle compartment 5 and the trunk room 8. The opening end of the ventilation passage 17 on the vehicle interior side is provided so that it can be opened and closed by a ventilation door 18. This ventilation door 18 is driven to open and close by an actuator 19 shown in FIG. In the figure, 18a is the rotation axis of the ventilation door 18. This actuator 19 is driven and controlled by a control circuit. A forced ventilation system fi1B is disposed below the parcel shelf 6, and the parcel shelf 6 has an inlet 20 and an outlet 21 formed therein. Moreover, the forced ventilation device B includes a casing 22, a proafan 23 disposed within the casing 22, and a filter 24 disposed on the suction side of the casing 22. The suction side of this casing 22 is connected to the suction port 20. Also, casing 2
A first branch discharge passage 25 that opens to the discharge port 21 and a second branch discharge passage 26 that communicates with the ventilation passage 17 are connected to the second discharge port 22a. Moreover, these discharge ports 2 are provided at the branch portions of the first and second branch discharge passages 25 and 26.
A switching door 27 that opens and closes the communication state to 2a.
is provided. This switching door 27 is driven to open and close by an actuator 28 shown in FIG. In the figure, 27a is a rotation axis of the switching door 27.

Further, a drive control signal is input to the actuator 19.28 from a control circuit 29 having a CPU (central processing unit). Moreover, this control circuit 2
9, Keith ftsuchi 30 and system switch 31
On/off signals from the door 18., control signals from the control panel 34, etc. are inputted, and the door 18. Position signals from position sensors 32 and 33 that detect the open and close positions of 27 are input. Note that 35 is a wiring connecting the control circuit 29 and a power source (not shown), and the control circuit 29 is energized through this wiring 35.

Next, the setting conditions of this control circuit 29 will be explained together with the operation of the ventilation stem.

When the switch 30.31 is turned on and the control circuit 29 is activated, the control circuit 29 operates the actuator 19.28 and the proafan 23 as follows (1), (2) according to the ventilation control signal from the control panel 34. The drive is controlled as follows.

(1) When the ventilation control signal inputted from the control panel 34 is a normal ventilation signal, the normal ventilation control circuit 29 drives and controls the actuator 19 to open the ventilation door 18, and also drives and controls the actuator 28 to switch. The door 27 is connected to the second branch passage 26
side to close the second branch passage 26. In this state, when the fan drive signal f8 is inputted from the control panel 34 to the control circuit 29, the proa fan 23 is operated. As a result, the air inside the vehicle compartment 5 is removed from the filter 2.
After being inhaled and cleaned through 4, the first branch y82
5 and is discharged into the vehicle compartment 5 and circulated. On the other hand, the wind pressure associated with vehicle running and the proafan of the air conditioner (
When air is introduced into the vehicle interior 5 from the air outlet 3.4 of the instrument panel 2 by the air conditioner (not shown), the pressure inside the vehicle interior 5 is higher than that outside the vehicle interior. In this state, air in the vehicle compartment 5 flows into the trunk compartment 8 via the ventilation passage 17 due to the pressure difference between the compartment 5 and the trunk compartment 8, and then is discharged to the atmosphere from the exhaust port 9a. (2) Forced ventilation In addition, when the ventilation control signal inputted from the control panel 34 is a forced ventilation signal, the control circuit 29 controls the actuator 1
9 to close the ventilation door 18, and actuator 28 to move the switching door 27 to the first branch passage 25 side to close the first branch passage 25. Thereafter, a fan drive signal is input from the IIJ control panel 34 to the control circuit 29, and the proa fan 23 is operated. As a result, the air inside the vehicle compartment 5 is transferred to the filter 24.
After being sucked in and cleaned through the second branch discharge passage 26
It flows into the first rank room 8 through the ventilation passage 17, and is discharged to the atmosphere from the exhaust port 9a. Furthermore, when the OFF signal is input from the key switch 3o or the system switch 31 when the ventilation port 7 is closed, the control circuit 29 controls the actuator 19 to drive the ventilation door 718 in the opening direction. , it is set to turn off after opening the ventilation port 7. [Second Embodiment] FIG. 5 shows a second embodiment of the present invention. This embodiment shows an example in which, in the configuration of the first embodiment, a timer 36 that turns on/off in response to an ON-OFF signal from a key switch 30 is provided, and this timer 36 is interposed in the middle of the wiring 35. It is something that

In this embodiment, the control circuit 29, like the first embodiment,
When the OFF signal is input from the key switch 3o or the system switch 31 when the ventilation port 7 is opened, that is, during forced ventilation, the actuator 19 is driven and controlled to drive the ventilation door 18 in the opening direction, and the ventilation port 7 is opened. It is set as follows. Moreover, the timer 36 is
When the OFF signal Yj is manually inputted from o, the signal to the control circuit 29 is activated after it operates for a predetermined period of time and then stops, that is, after the ventilation opening 7 is operated for a period longer than the time until the ventilation door 18 is completely opened and fixed. It is set to stop power supply.

(Effects of the Invention) As explained above, in the present invention, a ventilation passageway communicating with the rear part of the vehicle interior and the trunk room is provided in a partition portion that partitions the rear part of the vehicle interior and the trunk room, and an opening of the ventilation passageway on the vehicle interior side is provided. The end of the vehicle is provided with a ventilation door that can be opened and closed, and the ventilation door is provided such that its opening and closing operation can be controlled by a control circuit, and a forced ventilation device is disposed at the rear of the vehicle interior and opens into the rear of the vehicle interior. A second branch discharge passage that communicates with the first branch discharge passage and the ventilation passage is connected to the discharge port of the forced ventilation device, and an I7J exchange door that opens and closes the +7I exchange of the first and second branch discharge passages. In the automobile forced ventilation system installed in the vehicle, when an OFF signal is input to the control circuit when the ventilation opening is opened, the ventilation door is driven to open the ventilation opening. Since the configuration is set to turn off after opening, when control 1 (1I path) is turned off in forced ventilation mode, the ventilation opening that is closed by the ventilation door is automatically opened and the normal operation is performed. Ventilation can be performed by pressure difference.

As a result, even when the outside temperature is low and the key switch or system switch is turned OFF during forced ventilation, the ventilation performance will deteriorate and the window glass will become foggy. It can be prevented. Furthermore, since the ventilation performance does not deteriorate as described above, it is possible to prevent the opening/closing performance of the front doors, rear doors, etc. from becoming worse due to increased opening/closing resistance due to the air inside the vehicle interior.

[Brief Description of the Drawings] Figures 1 and 2 are schematic cross-sectional views showing a first embodiment of a forced ventilation system for an automobile according to the present invention. Figure 3 is similar to Figure 1. 3 is an explanatory diagram showing a control circuit of the forced ventilation system shown in FIG. 2. FIG. FIG. 4 is an explanatory diagram of an automobile equipped with the forced ventilation system shown in FIGS. 1 to 3. FIG. 5 is a circuit diagram showing a second embodiment of the forced ventilation system for an automobile according to the present invention. FIG. 6 is an explanatory diagram of an automobile equipped with a conventional ventilation system. FIG. 7 is a control circuit diagram of the ventilation system shown in FIG. 5... Vehicle compartment 6... Parcel shelf 7... Ventilation port 16... Partition wall 16a... Ventilation port 17... Ventilation passage 18... Ventilation door 19... Actuator 20. ...Suction port 21...Discharge port 23...Proa fan 25...First branch l'Il: Outlet passage 26...Second branch discharge passage 27...Switching door 28...Actuator 29 ...Control circuit 30゛゜Key switch 31...System switch 32...Position sensor 33...Position sensor/ Fig. 1/5 5 Ezu 6... Parhi Jrejinirufu 7...Horror KO17 ``SeL chestnut hole← 18 SAeA.F'7 20・W1 included 22a...νNieku 23 ・Floor fan 25 ・!!;1 Iki V2A mortar 26 Kudzu 2, Figures 4 and 5

Claims (1)

[Claims] (1) A ventilation passage communicating with the rear part of the passenger compartment and the trunk room is provided in a partition section that partitions the rear part of the passenger compartment and the trunk room, and the opening end of the ventilation passage on the passenger compartment side is provided so as to be openable and closable with a ventilation door. A ventilation door is provided so that its opening/closing drive can be controlled by a control circuit, and a forced ventilation device is disposed at the rear of the vehicle compartment and communicates with a first branch discharge passage that opens into the rear part of the vehicle compartment and the ventilation passage. A second branch discharge passage is connected to the discharge port of the forced ventilation device, and a second branch discharge passage is connected to the discharge port of the forced ventilation device.
A forced ventilation system for an automobile is provided with a switching door for switching open/close of a branch discharge passage, and the control circuit is configured to turn off the ventilation when an OFF signal is input to the control circuit when the ventilation opening is closed. A forced ventilation system for an automobile, characterized in that the system is set to turn off after driving a door to open the ventilation port.