JPH03281427A - Ventilator for vehicle - Google Patents

Abstract

PURPOSE:To generate air flow to the upper part in a car room and positively ventilate the air of high temperature of the upper part section in the car room by providing a ventilation controlling means, which receives the output of a ventilation condition determining means and introduces outside air from the defroster spit hole of an air conditioner during ventilation. CONSTITUTION:Receiving the output of a ventilation condition determining means 101, a ventilation control means 102 introduces air(outside air) through the defroster spit hole 2 of an air conditioner A. In the next step, the air, which was introduced in a car room, flows among the upper part of the car room, as a result, the air of high temperature, which is liable to stay at the upper part of the car room, is pushed to the rear part and then exhausted from the rear section of a car body to outside.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ventilation system for a vehicle that performs ventilation during parking.

(Prior art) A solar cell that generates electricity from sunlight is installed on the top of the vehicle body of a vehicle such as an automobile, and the output power of the solar cell is used to operate the vehicle while parked under the hot summer sun without relying on batteries. ventilation to prevent the battery from dying.
A vehicle is known that automatically ventilates the interior of the vehicle to relieve the discomfort of passengers when getting into the vehicle (see, for example, Japanese Utility Model Application Publication No. 1056/1999).

By the way, as is generally known, high-temperature air has a low density, so in a vehicle interior, high-temperature air is located in the upper part of the vehicle interior, and low-temperature air is located in the lower part of the vehicle interior.

(Problem to be Solved by the Invention) However, the above-mentioned device usually introduces outside air through the air conditioning duct of the air conditioner at the front of the vehicle. Since the air inside the vehicle is exhausted from the rear of the vehicle body, the high temperature air in the upper part of the vehicle interior is not sufficiently ventilated, resulting in poor ventilation efficiency.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a ventilation system for a vehicle that can ventilate high-temperature air in the upper part of a vehicle interior.

(Means for Solving the Problems) The present invention includes an air conditioner having a defroster outlet opening at least on the top surface of an instrument panel, and a ventilation fan means for discharging cabin air from the rear of the vehicle body to the outside. The ventilation condition determining means includes a ventilation condition determining means for determining the ventilation condition, and a ventilation control means receives the output of the ventilation condition determining means and causes outside air to be introduced from the defroster outlet of the air conditioner during ventilation.

(Function) During ventilation, air (outside air) is introduced from the defroster outlet of the air conditioner by the ventilation control means, and the air introduced into the vehicle interior flows upward and along the top surface of the vehicle interior. , the high-temperature air that tends to stay in the upper part of the vehicle interior is pushed rearward and exhausted to the outside from the rear of the vehicle body.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

In Fig. 1, which shows the schematic structure of the front part of the passenger compartment of an automobile,
Reference numeral 1 designates an instrument panel, on the top surface of which there is formed a defrost outlet 2.degree. 2 through which conditioned air is blown upward, and vent outlets 3A and 3B are formed on the left, right, and center portions.

Air conditioner A that supplies conditioned air to the defrost outlet 2
As shown in FIG. 2, in the air conditioning passage 11, from the upstream side, there are an inside/outside air switching door 15 (R/F door) that switches between the inside air inlet 13 and the outside air inlet 14, a blower 16, and an evaporator 17. , an air mix door 18, a heater core 19, and an auxiliary door 20 are arranged in this order, and a vent outlet 3A,
3B.

Conditioned air is blown out from a defrost outlet 2 and a heater outlet 4.

Further, a vent door 24 is provided for the gathering area of each of the air outlets 3A and 3B, a defrost door 25 is provided for the gathering area of the defrost air outlet 2, and a heat door 26 is provided for the heat outlet 4. and each outlet 2.3A, 3
The volume of the conditioned air blown out from B and 4 is adjusted.

The inside/outside air switching door 15 is switched by an actuator 27, the air mix door 18 and the auxiliary door 20 are opened and closed by an actuator 28, and the opening degrees of the doors 24, 25, 26 are controlled by an actuator 29. It is now possible to do so.

31 is a controller consisting of a microcomputer, which controls the actuator 27 of the air conditioner A according to an operation signal.
．． 28 and 29 are drive-controlled to set a predetermined air conditioning mode.

Further, as shown in FIG. 3, the controller 31 receives signals from a solar radiation sensor 32 and an outside temperature sensor 33, and determines whether or not the area is in a ventilation area based on the amount of solar radiation and outside temperature, and It has a ventilation condition determining means 101 that determines the conditions, and a ventilation control means 102 that receives the output of the ventilation condition determining means 101 and sets the air conditioner A to the differential mode during parking ventilation. Therefore, during parking ventilation, the inside/outside air switching door 15 is in the outside air introduction position where the outside air inlet 14 is opened, and the differential mode is set, and fresh air is introduced into the vehicle interior through the outside air inlet 14 and the defroster outlet 2, and the vehicle An air flow is generated in the upper part of the cabin, and the air inside the cabin is exhausted by a ventilation fan B installed in the trunk room or the like.

In FIG. 2, 45 is an engine, 46 is a capacitor, 47 is a receiver, and 48 is a compressor.

Next, the flow of control by the controller 31 will be explained in detail with reference to FIG. 4.

When started by turning on the ventilation switch, etc., the ventilation condition determination means 101 determines whether or not it is a ventilation area (see FIG. 5) (step Sl). If it is a ventilation area, the process moves to step S2, and it is determined that the ventilation area must be For example, the process moves to step S3, stops the ventilation fan B, charges the in-vehicle battery with a solar battery (not shown), and returns.

In step S2, it is determined whether the inside/outside air switch is ON or not. If it is ON, the outside air is being introduced so that ventilation can be performed. Therefore, in step S4, the air conditioner is controlled to be in the differential mode, and from the defroster outlet 3. Air conditioned air is blown out. Since this conditioned air is blown to the upper part of the vehicle interior, the high temperature air in the upper part of the vehicle interior is pushed and sucked out by the ventilation fan B disposed in the trunk room for ventilation.

As a result, relatively high-temperature air in the upper part of the vehicle interior is more actively discharged to the outside of the vehicle interior than relatively low-temperature air in the lower part of the vehicle interior, increasing ventilation efficiency.

Further, if the R/F switch is OFF in step S2, the inside air is being circulated and ventilation is not possible, so the R/F door is set to the outside air introducing position and the process proceeds to step S5) and step S4. Note that the R/F switch is a switch that is turned on when the inside/outside air switching door 15 is in the outside air introduction position.

In the above embodiment, the air conditioning mode of the air conditioner A is set to the differential mode, and the conditioned air is blown out from the defroster outlet 3. However, without operating the air conditioner,
It is also possible to simply allow air (outside air) to be introduced from the defroster outlet 3 and to perform ventilation by operating only the ventilation fan means at the rear of the vehicle. As shown in FIG. 6, an on-off valve 43 that opens during ventilation is interposed between the differential duct 41 and the cowl box 42, without passing the air conditioning passage.
Air can also be introduced from the defroster outlet 3 through the cowl box 42.

In addition, in order to further increase ventilation efficiency,
It is also possible to use a heat pipe as shown in FIG.

A heat vibrator 55 is disposed in parallel with a ventilation duct 54 extending from an intake port 51 at the top of the vehicle body through a rear villa 52 to a ventilation port 53 at the rear of the vehicle body.

The front end of the heat vibe 55 faces the upper part of the vehicle interior through the opening 56, and has a plurality of fins 55a.

On the other hand, the rear end also has a plurality of fins 55b, extends to the downstream side of the ventilation fan B of the ventilation duct 54, and has a plurality of fins 55b.
Carrying nearby heat to the vicinity of the ventilation port 53, so that the temperatures of the air near the suction port 51 and the temperature of the air near the ventilation port 53 are approximately equal,
The structure is such that air flows smoothly from the suction port 51 to the ventilation port 53 without being affected by temperature differences.

The ventilation duct 54 and the heat vibrator 55 are covered with a trim 57. 58, 59, 60 a fender, a bumper, an extractor, and 61 a one-way valve that only allows exhaust from the ventilation duct 54.

Further, as shown in FIGS. 11 to 13, a duct 72 for sucking air from the upper part of the vehicle interior is provided in the seat back 71A of the rear seat 71, and a suction portion 73 is provided in the headrest 71B. The suction port 73 and the upper end of the duct 72 are connected by an expandable duct 74 (bellows member), and when ventilating the parking space, the headrest 71B is raised to the upper part of the vehicle interior, and the high temperature air in the upper part of the vehicle interior is actively drawn. It is also possible to make it so that it is sucked in. The lower end of the duct 72 is a ventilation duct 7 with a ventilation fan B interposed in the middle.
5.

The headrest 71B includes a pipe-shaped guide member 77.77 fixed to a frame member 76 within the seatback 71A.
A pinion 80 driven by an actuator 79 meshes with a rack part 78a formed at the lower end of one rod member 78, which is supported by lid members 78 and 78 movably fitted to the rod members 78 and 78.
9 is activated to raise the headrest 71B, allowing air from the upper part of the vehicle interior to be sucked in.

Note that the headrest 7 is attached to the side of the headrest 71b.
An up switch 81 and a down switch 82 for raising and lowering 1B are respectively provided.

Therefore, when the passenger gets off the vehicle, if the up switch 81 as a ventilation switch is turned on, the headrest 71
B rises, the suction lower 3 moves to the upper part of the vehicle interior, and ventilation is performed to exhaust the air from the upper part of the vehicle interior.

Furthermore, the configuration shown in FIGS. 14 and 15 can also be adopted.

In this case, the bracket 9 is attached to the rear side of the rear seat 91.
Attach the fixed duct 93 via 2, and the fixed duct 93
On the other hand, a movable duct 94 having a suction port 94a at its upper end is fitted so as to be movable up and down. A rack member 95 is disposed on the side surface of the movable duct 94, and an actuator 96
It meshes with the pinion 97 which is rotated by. As the pinion 97 rotates, the movable duct 94 is guided by the engagement between the engaging member 98 and the guide rail 99, and moves up and down.

Note that the lower end of the fixed duct 93 has a ventilation fan B in the middle.
It is connected to a ventilation duct 75 with an intervening ventilation duct 75.

(Effects of the Invention) As described above, in the present invention, air is introduced from the defrost outlet on the top of the instrument panel during ventilation, so air flows to the upper part of the vehicle interior, and the air flows to the upper part of the vehicle interior. High temperature air can be actively ventilated, increasing ventilation efficiency.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the front part of the vehicle interior, Fig. 2 is an explanatory diagram of the air conditioner, Fig. 3 is a block diagram of the controller, and Fig. 4 is the processing of the controller. FIG. 5 is an explanatory diagram of the ventilation area, and FIG. 6 is a schematic explanatory diagram showing a modification. 7 to 10 show other embodiments, FIG. 7 is a perspective view of the rear part of the automobile with a part cut away, FIG. 8 is a perspective view of the vicinity of the upper end of the ventilation duct, and FIG. 9 10 is a sectional view of the vicinity of the upper end of the ventilation duct, and FIG. 10 is a sectional view of the middle portion of the ventilation duct. FIGS. 11 to 13 show still other embodiments, and the first
1 is an overall configuration diagram, FIG. 12 is a perspective view of the main part, and FIG. 13 is a perspective view of the main part with the seat skin removed. FIGS. 14 and 15 show still another embodiment, with FIG. 14 being an overall configuration diagram and FIG. 15 being a perspective view of essential parts. A...Air conditioner B...Ventilation fan means 1...Instrument panel 2...
Defroster outlet 101...Ventilation condition determining means 102...Ventilation control means A...Air conditioner B...Ventilation fan means 1... Instrument panel 2...
Defroster outlet 101...Ventilation condition determination means 102...Ventilation control means Fig. 1 also Fig. 6 12 Fig. 13 Fig. 14

Claims (1)

[Claims] (1) Ventilation condition determination for determining ventilation conditions in an air conditioner equipped with at least a defroster outlet opening on the top surface of the instrument panel and ventilation fan means for discharging interior air from the rear of the vehicle to the outside. A ventilation system for a vehicle, comprising: a means for determining ventilation conditions; and a ventilation control means for receiving the output of the ventilation condition determining means and causing outside air to be introduced from a defroster outlet of an air conditioner during ventilation.