JPH03204332A - Air cleaner/ventilator for automobile - Google Patents

Abstract

PURPOSE:To prevent air inside a vehicle room forcibly exhausted to a trunk room from flowing back into the vehicle room through the air passage of a natural ventilation system even during forced ventilation mode using a blower so as to carry out smooth ventilation by providing a back flow preventing door in the air passage of the natural ventilation system. CONSTITUTION:When forced ventilation mode is selected a ventilating door 8 is so positioned as to open a forced ventilation system air passage B. In this case air inside a vehicle room is exhausted to a trunk room via an air exhaust opening 6 by driving of a blower 4. The air passage C of a natural exhaust system is closed by a back flow preventing door 9. Even when pressure within the trunk room is raised to more than that within the vehicle room by forced ventilation, air inside the vehicle room which has been exhausted to the trunk room via the forced ventilation system air passage B is therefore prevented from flowing back into the vehicle room from the natural ventilation system air passage C and forced ventilation is achieved without any trouble.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air purification/ventilation system for an automobile, which has the functions of purifying air inside a vehicle interior and ventilation.

[Conventional technology]

2. Description of the Related Art Conventionally, various techniques have been proposed for purifying the air inside a vehicle interior of a vehicle, for releasing odor from the vehicle interior, and for ventilating hot air during parking.

In the inside air circulation purification mode, this type of device uses a blower to drive the air inside the vehicle to purify it with an air purifier such as a filter, and then returns it to the vehicle interior via the circulation air path. Passing the indoor air through the air passage outside the car,
Air is forced out using a blower, or air from outside the vehicle is introduced. The air passage for the internal air circulation purification system and the air passage for the forced ventilation system are structured so that the air purifier and blower can be shared, and these air passages are switched by switching doors (dampers). There is.

For example, in the air purification device disclosed in Japanese Patent Application Laid-Open No. 63-207719, when the temperature inside the vehicle exceeds a set value,
In order to remove hot air and odor emitted from the purification element due to the influence of heat, the system is set in forced ventilation mode, and when the temperature falls below a set value, it is switched to internal air circulation purification mode. In addition, the device disclosed in Japanese Utility Model Application Publication No. 60-45213 has a rear blower that circulates the air inside the vehicle through a purification element and discharges it to the outside, and a front blower that introduces outside air. When ventilating a vehicle, a technique has been proposed that equalizes the amount of air entering and exiting from both the rear and front sides. In addition, regarding air purification, please refer to JP-A-59-13
Various techniques have been proposed, such as Japanese Patent No. 7212, in which the air outlet in the internal air purification mode is switched in response to smoking.

This type of air purification/ventilation system is generally installed at the rear of the passenger compartment, as shown by reference numeral 60 in FIG. 6, and has an air outlet 61 for forced ventilation mode communicating with the trunk compartment.

In addition, in the passenger compartment, there is a normal ventilation opening (commonly known as a drafter) 63 for natural ventilation during normal times without using the blower 62, and a rear air purification/ventilation (forced ventilation) device and a separate ventilation opening. It is disposed in the bar cell portion 64 and the like.

This normal ventilation port 63 only communicates the interior of the vehicle with the outside of the vehicle (trunk room), and increases the internal pressure when outside air is introduced into the vehicle interior, and the differential pressure (internal pressure) between the interior and exterior of the vehicle depending on the vehicle speed.
The system employs a structure in which the air inside the cabin is released into the trunk using external pressure (external pressure), which is kept open at all times (the air released into the trunk is released outside the vehicle via an air vent in the trunk).

[Problem to be solved by the invention]

By the way, when the device 60 having a forced ventilation function is installed in a vehicle equipped with the normal ventilation port 63,
There were points that needed improvement as follows.

As mentioned above, natural ventilation during normal times is achieved by the pressure difference between the inside and outside of the vehicle through the ventilation opening 63 provided in the rear parcel. However, when using the air purifying/ventilating device 60 and operating in forced ventilation mode, the blower 6
2 forcibly exhausts the air inside the vehicle into the trunk compartment.
In some cases, the pressure inside the trunk rose higher than the pressure inside the passenger compartment, and the air discharged into the trunk sometimes flowed back into the passenger compartment through the ventilation opening.

In such a situation, the above-mentioned Utility Model Application No. 60-45213
As disclosed in the publication, this problem can be solved by making the amount of air in and out of the rear blower (for discharging inside air) and the front blower (for introducing outside air) equal, but this tends to complicate the control. Furthermore, the front side blower must also be driven, and it is not possible to operate the rear side blower alone.

7--An alternative way to deal with this is to close the normal ventilation opening with a door during forced ventilation mode. According to this method, even when forced ventilation is performed by operating the rear side blower alone, backflow of cabin air discharged into the trunk compartment through the normal ventilation opening can be prevented. However, it is difficult to provide a door to the elongated normal ventilation opening provided in the rear parcel section in terms of cost and installation space.

The present invention has been made in view of the above points, and its purpose is to prevent air leakage in the trunk compartment even when a device with a forced ventilation function (discharge of air from the vehicle interior) using a blower is installed. To provide an automobile in which a situation in which forcibly discharged interior air flows back into the passenger compartment through a normal ventilation opening is prevented by simple door control, and furthermore, this type of backflow prevention door can be installed easily and at low cost. Our purpose is to provide air purification and ventilation equipment for use.

[Means to solve the problem]

In order to achieve the above object, the present invention is basically configured as follows.

Figure 1 is shown below to facilitate understanding of the content.

The explanation will be made by referring to the reference numerals of the embodiment shown in FIG. Note that the arrow in the figure indicates the direction of travel.

The present invention provides an air path A of an inside air circulation purification system in which air inside the vehicle is returned to the inside of the vehicle through an air purifier 3 by driving a blower 4.
, a forced ventilation system air path B in which the air inside the vehicle is discharged into the trunk compartment by the drive of the blower 4, and natural ventilation in which the air in the vehicle interior is discharged into the trunk compartment by the differential pressure between the outside and outside of the vehicle without going through the blower. The internal air circulation purification system air path A, the forced ventilation system air path B, and the natural ventilation system air path C are collectively formed inside the unitized device main body 1. A switching door 8 is disposed in the main body 1 of the device, which is located downstream of the blower 4 and switches between an internal air circulation system air path A and a forced ventilation system air path B in accordance with each mode, as well as a natural ventilation system. The air path C is provided with a door 9 that is set to close the natural ventilation system air path C when the forced ventilation system mode is selected, and to open the natural ventilation system air path C in other cases. (This configuration corresponds to the first claim of the claims).

In addition, as an example of a means for solving this basic problem, for example, the unit 1 which is the main body of an air purifying/ventilating device for an automobile
2. Air suction port opening into the vehicle interior 2. Air purifier 3. An internal air circulation purification system air path A leading to an air outlet 5 opening into the vehicle interior via a blower 4, and an air inlet 2. After passing through the air purifier 3 and the blower 4, there is a forced ventilation system air path B that branches off from the inside air circulation system air path A and reaches an air outlet 6 that opens into the trunk compartment, and a forced ventilation system air path B that is separate from the forced ventilation system air path B. , a natural ventilation system air path C that directly leads to the air outlet 6 to the trunk compartment via an air introduction lower opening into the vehicle interior, and an internal air circulation system air path A and a forced ventilation system. A switching door 8 is provided at the branching portion 10 from the air path B to switch between the inside air circulation system air path A and the forced circulation system air path B in accordance with the respective modes.

The natural ventilation system air path C is set to close the air introduction lower of this natural ventilation system air path C when the forced ventilation system mode is selected, and to open this air introduction lower in other cases. A door 9 is provided (this configuration corresponds to the third claim).

[Function] According to the basic problem-solving means of the present invention, when the air inside the vehicle is purified and reused, the switching door 8 is positioned to select the internal air circulation purification system air path A. In this case, in addition to the inside air circulation purification mode being executed, the door 9 of the natural ventilation system air passage C is also in an open state, and the differential pressure between the inside and outside of the vehicle (internal pressure>external pressure) caused by the influence of the vehicle speed is , normal ventilation is provided to naturally release air from the passenger compartment into the trunk compartment. The air inside the vehicle that has been released into the trunk exits from the trunk to the outside of the vehicle.

Note that even if the internal air circulation purification mode is stopped, the door 9 of the natural ventilation system remains open and normal ventilation is performed unless the forced ventilation mode 1 is entered.

Next, when the forced ventilation mode is selected, the switching door 1-2a 8 is positioned to open the forced ventilation system air path B. In this case, the air inside the vehicle is discharged into the trunk compartment through the air outlet 6 by driving the blower 4 . On the other hand, the air passage C of the natural ventilation system is closed by the door 9. Therefore, even if the pressure in the trunk rises higher than the pressure in the cabin due to forced ventilation, the air inside the cabin discharged into the trunk via forced ventilation system air path B will flow from natural ventilation system air path C into the vehicle. Prevent backflow into the room.

In this problem-solving means, the normal ventilation opening, which was conventionally installed separately from the air purification/ventilation device, is replaced with the air circulation passage A of the internal air circulation purification system and the forced ventilation system air passage C instead of the ordinary ventilation opening. It is arranged together with the system air path B in the unitized device main body 1.

Therefore, the door 9 for preventing backflow in the natural ventilation system can be easily installed at the unit manufacturing stage, and
The shape of the door 9 itself can be easily designed to suit the location where the air passage C is installed. In particular, according to the present problem solving means, in the case of a conventional normal ventilation opening, if a door 9 is to be installed, it must be formed in the parcel part to be elongated over the entire width of the rear window. It is now possible to form an air introduction lower part of the natural ventilation system in the unit that is about the size of one hand, reducing the installation space for the door 9, making the installation process easier, and reducing the cost. It can be made cheap.

In addition, an example of the basic problem-solving means described in the section [Means for solving the problem] and specific matters stated in the claims of other claims are explained in detail in the examples. Therefore, the explanation here will be omitted.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 1 to 5.

Figures 1 and 2 show air purifiers that are an embodiment of the present invention.
FIG. 3 is a perspective view of the present embodiment, FIG. 4 is a cross-sectional view taken along line I-1, and FIG. 5 is a cross-sectional view of the present embodiment.

First, the structural outline of this embodiment will be explained with reference to FIGS. 1 and 2. Reference numeral 1 denotes the main body of the device, which consists of a box-shaped unit case. An internal air circulation purification system air path A that returns the air inside the vehicle interior, a forced ventilation system air path B that forcibly exhausts the air inside the vehicle outside the vehicle (trunk compartment), and a A natural ventilation system air path (normal ventilation opening) C is formed at once to allow natural ventilation into the trunk compartment.

The inside air circulation purification system air path A and the forced ventilation system air path B are air inlets 2. Air purifier 3. The passage up to the blower 4 is shared, and then the air circulation purification system air passage A leads to the air outlet 5 which opens into the passenger compartment, and the forced ventilation system air passage B leads to the air exhaust opening leading to the trunk compartment. It has a passage structure leading to the exit 6. 4a is the scroll of the blower, 4b
is the blower motor.

The natural ventilation system air path C has a passage structure that extends directly from the air introduction lower for natural ventilation that opens into the vehicle interior to the air exhaust port 6, separately from the forced ventilation system.

A switching door 8 is disposed at a branching portion (downstream of the blower) of the internal air circulation purification system air path A and the forced ventilation system air path B (downstream of the blower) to switch these air paths according to each mode. Furthermore, an opening/closing door 9 is provided at the air introduction lower part of the natural ventilation system air passage C to open the air passage C when the air passage C is not in forced ventilation mode.

Here, details of each element of this embodiment will be explained with reference to FIGS. 3 to 5.

The main body 1 of the device has a box shape, and has an air intake port 2 for an internal air circulation purification system and a forced ventilation system on its upper surface. In addition to forming the air outlet 5, an air introduction lower of the natural ventilation system is formed.

The air outlet 5 and the air introduction lower are both laid out so as to be adjacent to one side of the air inlet 2.

An air outlet 6 common to the natural ventilation system 9 and the forced ventilation system is formed at a position near the air introduction lower at the upper side of the device main body 1.

In this embodiment, an air purifier 3 is provided at the top of the device main body 1 facing directly below the air suction port 2, and a blower 4 is placed at the bottom of the device main body 1 directly below the air purifier 3. Further, a natural ventilation system air passage C is formed in the upper part of the apparatus main body so as to be adjacent to the 5 16 air cleaner 3.

That is, in a passage that is a common part of the internal air circulation purification system air path A and the forced circulation exhaust system air path B, an air purifier 3 and a blower 4 are arranged in a two-tiered structure directly below the suction port 2,
The area up to the vicinity of the air path branch 10 downstream of this blower is the main body 1 of the device.
It passes directly under the natural ventilation system air passage C at the bottom of. A communication port 12 is formed at the bottom of the natural ventilation system air passage C]-1,
The forced ventilation system air path B is combined with the natural ventilation system air path C through this communication port 12, and the air exhaust port 6 leading to the trunk compartment side is shared by the forced ventilation system air path B and the natural ventilation system air path C. It becomes an outlet for

On the other hand, the inside air circulation purification system air passage A passes through the communication port 10' formed in the passage wall of the branching part 1o, and then passes through the apparatus main body 1.
An air path is formed toward the air outlet 5 provided on the upper surface of the air outlet. The air outlet 5 is arranged adjacent to both the air inlet 2 and the air introduction lower of the natural ventilation system.

As shown in FIG. 4, the switching door 8 is disposed in the air path branching part 10, and is used to open and close the communication port 10' of the internal air circulation purification system air path A and the communication port 12 of the forced ventilation system air path B. This is done by switching operation according to the mode, and the door 9 of the natural ventilation system is
It opens and closes the air introduction lower. These doors 8 and 9 are interlocked via a common actuator 13 and link mechanism 14 shown in FIG.

This interlocking pattern is such that when the door 8 closes the communication port 10' of the inside air purification system (in forced ventilation mode), the door 9 closes the air introduction lower of the natural ventilation system, as shown by the solid line in Figure 4. Furthermore, as shown in the dashed line in FIG. 4, when the door 8 closes the communication port 12 of the forced ventilation system (inside air circulation purification system mode), the door 9 is set to open the air introduction lower. It is.

The actuator 13 is connected to the blower 4 as shown in FIG.
It is arranged in a space 15 along the nose side wall of the scroll.

This type of device main body has air suction port 2 on the top surface of the device main body.
．． The air outlet 5 and the air discharge lower open into the vehicle interior, and the air discharge port 6 opens toward the trunk compartment, and is incorporated into the parcel portion on the rear side of the vehicle interior.

Next, the operation of this embodiment will be explained.

First, in the inside air circulation and purification system mode, the switching door 8 closes the communication port 12 and opens the communication port 10' of the inside air circulation and purification system. Further, the door 9 of the natural ventilation system is kept in an open state with the air introduction lower part.

In this mode, when the air blower 4 is driven, the air inside the vehicle is sucked from the air suction port 2 and passes through the air purifier 3, as shown by the arrow in FIG. The air passes through the scroll 4a of No. 4, and is returned to the vehicle interior via the communication port 10' and the air outlet 5. At this time, the natural ventilation system air passage C is also open, so the pressure difference between the interior and exterior of the vehicle due to vehicle speed (pressure inside the vehicle > pressure in the trunk)
This allows the air inside the vehicle to be naturally ventilated. Note that even in cases other than the inside air circulation purification mode, the natural ventilation system air path C is opened to perform natural ventilation unless the 1 forced ventilation mode is set, in other words, if it is in the normal state.

Next, in the case of forced ventilation mode, the blower 4 is driven, and the switching door 8 opens the communication port 12 of the forced ventilation system by the operation of the actuator 13 and the link mechanism 14, and the communication port 10' of the internal air circulation purification system. Close and natural ventilation system door 9
closes the air introduction lower.

In this case, as shown in Figure 2, the air inside the vehicle is
Until midway through, the air intake port 2 is
．． The air passes through the scroll 4a of the air purifier 3 and blower 4, and then passes through the air passage C shared with the natural ventilation system via the communication port 12 and is discharged from the air outlet 6 into the trunk compartment. The air discharged into the trunk compartment is discharged to the outside of the vehicle through a ventilation opening (not shown) in the vehicle body.

In this case, the air inside the vehicle is forcibly exhausted to the trunk using the blower 4, so that the pressure in the trunk may rise higher than the pressure inside the vehicle.

However, in this embodiment, even if such a situation occurs,
In the natural ventilation system, the air intake lower part of the air passage is closed by the door 9, so that the air exhausted from the trunk compartment passes from the air outlet 6 through the air introduction lower part into the passenger compartment. The phenomenon of backflow can be prevented, and forced ventilation can be performed without any problems.

According to this embodiment, there are the following advantages.

(b) First, as mentioned above, when forced ventilation is performed and the pressure in the trunk rises above the pressure in the passenger compartment, the natural ventilation system air path (normal ventilation opening) C closes, so that the air is exhausted into the trunk. To prevent the air inside a vehicle from flowing back into the vehicle from a natural ventilation system air path C and to enable smooth forced ventilation.

(b) Also, even if a backflow prevention door 9 is installed in the natural ventilation system air path C, this kind of backflow prevention door cannot be installed on the ventilation opening that is installed directly on the rear parcel as in the past. Unlike, since the door is installed in the unitized device main body 1 from the beginning, the door installation can be done at the stage of the manufacturing line of the device main body 1, rather than on-site installation. Therefore, door installation is easy and work efficiency is improved. In addition,
The size of the door 9 itself can also be made to be about the size of one hand, making it possible to make the door 9 smaller and to reduce the space in which it is installed.

(c) In addition, the air circulation passage A of the internal air circulation purification system and the air passage B of the forced ventilation system in the main body 1 of the device share a part of the air passage, and
Forced ventilation system air path B and natural ventilation system air path C also share some air paths and exhaust ports, so the air path structure is simplified, and these air paths A and B.

C and air purifier 3. The arrangement structure of the blower 4 makes efficient use of the space at the top and bottom of the box-shaped device main body, making it possible to downsize the entire device. In addition, in this embodiment, the air outlet 5. Since both of the air inlet lowers are arranged in parallel so as to be adjacent to the air inlet 2 on one side, the lateral direction The dimensions of can be shortened. This shortening in the lateral direction is due to the fact that the device is installed in the rear parcel section, which has limited width.
．． In addition to the air introduction lower, it is also necessary to secure a place for installing two car stereo speakers and other storage space, which is preferable from the point of view of effective use of the parcel section.

(d) Since both the forced ventilation switching door 8 and the backflow prevention door 9 are operated by one actuator 13, the number of parts can be reduced. As a result, it is possible to help reduce product costs.

(e) Since the actuator 13 for swinging the door is placed on the nose of the scroll 4a of the blower 4, the actuator can be placed by effectively utilizing the existing space without creating a special space, and the device can be made more compact. can be encouraged.

(E) Since the air purifier 3 is installed between the air intake port 2 and the blower 4, a sufficient distance between the vehicle interior and the motor 4b of the blower 4 is ensured, so that the operating noise of the motor 4b can be heard by the occupants. This can alleviate the discomfort caused by

〔Effect of the invention〕

As described above, according to the present invention, by providing a backflow prevention door in the air path of the natural ventilation system, even in the forced ventilation mode using a blower, the air is forced to be exhausted into the trunk compartment. This prevents the air inside the vehicle from flowing back into the interior of the vehicle through the natural ventilation system air passage, allowing for smooth ventilation. In addition, the natural ventilation system air path is different from the conventional normal ventilation opening that is installed separately in the parcel section, because it is placed together with the internal air circulation purification system air path and the forced ventilation system air path in the unit. The door for preventing backflow can be easily installed, and the installation work can be streamlined. Furthermore, the size of the door can be made to be about the size of one hand, and by making the door smaller, costs can be reduced and the installation space can be reduced.

[Brief explanation of drawings]

1 and 2 are schematic diagrams showing the operating state of an air purifying/ventilating system for an automobile which is an embodiment of the present invention, FIG. 3 is a perspective view of the above embodiment, and FIG. I-I line sectional view,
FIG. 5 is a cross-sectional view of the above-mentioned embodiment, and FIG. 6 is an explanatory diagram showing an example of a conventional air purifying/ventilating device for an automobile. A. Internal air circulation purification system air path, B... Forced ventilation system air path, C
...Natural ventilation system air path, 1...Device body, 2...Air intake = 23-4 vent, 3...Air purifier, 4...Blower, 5...
Air outlet, 6... Air outlet, 7... Air inlet, 8... Switching door, 9... Backflow prevention door, 10.
...Air path branch part, 10'...Communication port, 12...Communication port, 13...Actuator, 14...Link mechanism. ↑ Ya=268

Claims (1)

[Scope of Claims] 1. An air passage of an air circulation purification system that returns air from the vehicle interior to the interior of the vehicle via an air purifier by driving a blower, and exhausting air from the vehicle interior to the trunk compartment by driving the blower. The internal air circulation purification system air path and forced ventilation system air path and a natural ventilation system air path are collectively formed inside a unitized device body, and within this device body, the inside air circulation system air path and the forced ventilation system air path are located downstream of the blower. A switching door is provided to switch the mode according to each mode, and the natural ventilation system air path closes when the forced ventilation system mode is selected, and closes the natural ventilation system air path otherwise. An air purifying/ventilating device for an automobile, characterized in that a door is arranged to open the air passage of the natural ventilation system. 2. In the first claim, the inside air circulation purification system air path and the forced ventilation system air path have a passage structure in which an air suction port and a blower are common, and the forced ventilation system air path and the natural ventilation system air path have a common air suction port and a blower. The air purification/ventilation system for automobiles has a passage structure in which these air passages are combined from the middle and have a common air outlet to the trunk compartment. 3. The main unit of the automobile air purification/ventilation system includes an air circulation purification system air path that goes through an air inlet opening into the passenger compartment, an air purifier, and an air blower to the outlet opening into the passenger compartment. , a forced ventilation system air path that passes through the air intake port, the air purifier, and the blower, and then branches from the inside air circulation system air path to an air exhaust port that opens into the trunk compartment; and the forced ventilation system air path. Separately, a natural ventilation system air path leading directly to the air outlet to the trunk compartment through an air inlet opening into the vehicle interior is formed at once, and the internal air circulation system air path and the forced air circulation system air path are formed together. A switching door for switching between the inside air circulation system air path and the forced circulation system air path in accordance with each mode is provided at the branching point with the ventilation system air path, and the natural ventilation system air path includes: When the mode of the forced ventilation system is selected, the air inlet of the natural ventilation system air passage is closed, and a door is provided that is set to open the air inlet in other cases. Features of automotive air purification and ventilation equipment. 4. In any one of claims 1 to 3, the device main body has a box shape, and the air suction of the internal air circulation purification system air path and the forced ventilation system air path is provided on the top surface of the device main body. an air inlet of the natural ventilation system air passage and an air outlet of the internal air circulation system air passage, which are laid out so as to be adjacent to the air intake opening on one side; An air purifying/ventilating device for an automobile, wherein air exhaust ports of a ventilation system air path and a natural ventilation system air path are arranged, and the air purifier and blower are installed in a two-stage arrangement structure at the upper and lower parts of the device main body. 5. In the second or third claim, the device main body has a box shape, and the natural ventilation system air passage is formed in the upper part of the device main body, and the air inlet is formed on the upper surface of the device main body. An air exhaust port is formed at the upper side of the device body, and the air circulation purification system air path and the forced ventilation system air path have their air suction ports formed on the top surface of the device body, and the air suction ports are formed directly below the air suction port. The air purifier is placed on the top of the device body facing the
The blower is arranged at the lower part of the device main body, and the downstream side of the blower among these common passages passes directly under the natural ventilation system air path, and the forced ventilation system air path communicates from directly below the natural ventilation system air path. The internal air circulation purification system air path passes directly under the natural ventilation system air path and then connects to the air passage formed on the upper surface of the device main body. An air purifying/ventilating device for automobiles that has a passage structure toward the air outlet side. 6. In any one of claims 1 to 5, the switching door of the internal air circulation purification system air path and the forced ventilation system air path and the door of the natural ventilation system air path are provided with a common actuator and a link. An air purifying/ventilating device for automobiles configured to work together using a mechanism.