JPH0948228A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To forcedly suck and clean air in a car room of an automobile or the like without mounting an air cleaner. SOLUTION: The air intake 4 side of the air conditioning duct 2 of an air conditioning system 1 and the car room side are connected together through a bypass duct 18, and a bypass changeover door 19 is provided on the opening part on the car room side of the bypass duct 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system applied to automobiles and the like.

[0002]

2. Description of the Related Art Conventionally, an air conditioning system as shown in FIG.
In the case of (1), the outside air intake (3) is installed at one end of the air conditioning duct (2).
And an inside air intake (4) are provided, and further the outside air intake (3)
The inside / outside switching damper (5) for switching between the inside air intake port (4) and the inside air intake port (4)
A blower (6) for taking in the outside air or the inside air is arranged near the outside air intake (3) and the inside air intake (4), and a clean filter (7) is provided in the middle part, The evaporator (8) and the heater core (9) are arranged in the rear of the evaporator (8), and the air mix door is installed in front of and behind the heater core (9).
(10, 11) is provided, the other end is provided with a front air outlet (12), a defroster air outlet (13), and a foot side air outlet (14), and each air outlet (12, 13, 14) Opening / closing doors (15, 16, 17) are provided.

In the above structure, the air conditioning system (1)
Either the outside air intake or the inside air circulation is selected by the inside / outside switching damper (5), and the blower (6) is operated to perform the outside air intake or the inside air circulation. The outside air or the inside air taken into the air conditioning duct (2) by the blower (6) is purified by the cleaning filter (7) and then the evaporator.
In the case of full heating, the air mix door is dehumidified in (8).
Set (10,11) to the dotted line position and blow the air into the heater core.
Pass through (9), and in case of complete cooling, the air mix door
Set (10, 11) to the solid line position and blow the air into the heater core.
Shut off from (9), and if it is in the middle, the air mix door (10,
11) is set at a predetermined position between the dotted line and the solid line position to mix the air not passing through the heater core (9) and the air passing therethrough at a predetermined ratio, and the air is mixed with the front air outlet (12) and / or
Alternatively, the air is blown into the vehicle compartment from the defroster outlet (13) and / or the foot side outlet (14).

[0004]

In the above conventional air conditioning system (1), when the air in the passenger compartment is the internal air circulation, it is circulated through the air conditioning system (1) and purified by the cleaning filter (7). However, if the air in the passenger compartment is heavily contaminated with cigarette smoke, etc., it cannot be promptly purified, and there is no other means than opening the window to remove the air from the passenger compartment. There was no effective means. Although there are vehicle models that have an air purifier installed separately from the air conditioning system (1), the cost will increase if the air purifier is installed separately.

[0005]

[Means for Solving the Problems] As means for solving the above-mentioned conventional problems, the present invention has an outside air intake (3), an inside air intake (4), an outside air intake (3) and the inside air at one end. Intake (4)
And a damper (5) for switching between, and a blower (6) for taking in the outside air or the inside air is arranged in the vicinity of the outside air intake (3) and the inside air intake (4), and a clean filter is provided in the middle part. (7), an evaporator (8) and a heater core (9) equipped with air mix doors (10, 11) at the front and rear, and the other end is connected to the passenger compartment side to open and close the doors (15, 16, 17). ), The air-conditioning duct (2) provided with the outlets (12, 13, 14) is further provided with an outside air intake
(3) An air-conditioning system (1) provided with a bypass duct (18) having an opening in the vicinity thereof and the other end opening in the vicinity of the outlet (12), and the bypass duct (18) having a switching door (19). Is provided.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIG. In the air conditioning system (1) shown in the figure, the air conditioning duct
An outside air intake (3) and an inside air intake (4) are provided at one end of (2), and an inside / outside switching damper (5) for switching between the outside air intake (3) and the inside air intake (4) is provided. The outside air intake is provided
A blower (6) for taking in outside air or inside air is arranged near (3) and the inside air intake (4), a cleaning filter (7) is provided in the middle part, an evaporator (8) is provided behind it, and A heater core (9) is arranged on one side, air mix doors (10, 11) are provided in front of and behind the heater core (9), and the other end is a front air outlet (12) and a defroster air outlet (13). ), A foot side outlet (14) is provided, and an opening / closing door is provided at each outlet (12, 13, 14).
(15,16,17) are provided. Furthermore, a bypass duct (18) that connects the intake side of the air conditioning duct (2) and the vehicle interior side is provided, and one end of the bypass duct (18) has an inside air intake (4) of the air conditioning duct (2). ), And the other end is adjacent to the front outlet (12). A bypass switching door (19) is provided at the vehicle compartment side opening of the bypass duct (18).

In the above structure, normally, as in the conventional case, either the outside air intake or the inside air circulation is selected by the inside / outside switching damper (5) of the air conditioning system (1), and the blower (6) is activated to operate the outside air intake or the inside air. Cycle. Outside air or inside air taken into the air conditioning duct (2) by the blower (6) is purified by the cleaning filter (7) and then dehumidified by the evaporator (8), and in the case of complete heating, the air mix door ( (10, 11) is set to the dotted line position to allow the air to pass through the heater core (9), and in the case of complete cooling, the air mix door (10, 11) is set to the solid line position to set the air to the heater core (9). 9) shut off, and when it is in the middle, set the air mix door (10, 11) to a predetermined position between the dotted line and the solid line position to keep the air not passing through the heater core (9) and the air passing through it at a predetermined ratio. Mix, and the air is blown out at the front
(12) and / or the defroster outlet (13) and / or the foot side outlet (14) blows into the passenger compartment.

When the air in the passenger compartment is heavily polluted by cigarette smoke, the inside / outside switching damper (5) is switched to the inside air circulation with the solid line position, and the bypass switching door (19) opens the bypass duct (18). Then, due to the suction force of the blower (6), the air in the passenger compartment is sucked from the bypass duct (18) into the air conditioning duct (2), purified by the cleaning filter (7), and then blown out from the front outlet (12) and / or Or defroster outlet (13) and / or foot side outlet (14)
Is blown into the passenger compartment. The bypass switching door (19) is switched manually by a wire type lever or the like or automatically by an actuator or the like.

Another embodiment of the present invention is shown in FIG. In this embodiment, the bypass duct (18) is an inside / outside switching damper.
Contacted inside (5). As a result, the same effect can be obtained even when the outside air is introduced.

[0010]

As described above, according to the present invention, it is not necessary to install an air purifying device, and by simply adding a bypass duct to a conventional air conditioning system, the air in the passenger compartment is forcibly sucked from the vicinity of the air outlet near the passenger seat to improve efficiency. Can be purified.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of another embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Air-conditioning system 2 Air-conditioning duct 3 Outside air intake 4 Inside air intake 5 Inside / outside switching damper 6 Blower 7 Clean filter 8 Evaporator 9 Heater core 10,11 Air mix door 12 Front outlet 13 Defroster outlet 14 Foot side outlet 15,16 , 17 Open / close door 18 Bypass duct 19 Bypass switching door

Claims (1)

[Claims] 1. An outside air intake, an inside air intake, and a damper for switching between the outside air intake and the inside air intake are provided at one end, and outside air or the inside air is provided near the outside air intake and the inside air intake. Arranged a blower to take in, a cleaning filter and an evaporator in the middle, and a heater core equipped with air mix doors at the front and rear, and provided at the other end with an air outlet with an opening / closing door that communicates with the passenger compartment side. In the air conditioning duct, a bypass duct having one end opened near the outside / inside air intake port and the other end opened near the blowout port is provided, and the bypass duct is provided with a switching door.