JPH0127459Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an air conditioner that removes dust contained in introduced air introduced into an air conditioning case.

[Conventional technology]

Conventionally, the air introduced into the automobile air conditioner shown in FIG. 6 is supplied to an outside air intake 100 provided in the body panel 1 and the air conditioning case 2 and to the air conditioning case 2 by means of a blower (motor and fan) 52. The inside air is selectively supplied into the air conditioning case 2 through the inside air intake port 210, but if the inside air is used for circulation to prevent dust, the windows will fog up in winter, so outside air will have to be used.

Therefore, the introduced air from which dust has not been removed directly passes through the evaporator 51, the heater core 50, etc., and is delivered to the heater outlet 530, defroster outlet 531, and each vent outlet (center vent outlet 532, side vent outlet). 53
3) is blown out.

For this reason, when introducing outside air, in early spring in areas where spiked tires are often used, outside air containing asphalt powder is introduced into the air conditioning case 2.
There are health and hygiene issues.

In addition, when indoor air is being circulated, cigarette smoke circulates inside the room, and it is necessary to take appropriate precautions.

As a countermeasure against this problem, for example, there is a method shown in FIG. This is an air conditioner disclosed in Japanese Utility Model Publication No. 54-176948, in which a prefilter 30a, an activated carbon filter 30b, and a dust collector are installed in an air conditioning case 2' that includes a blower 52, an evaporator 51, and a heater core 50. A device is described in which a section 30c is equipped with an ionizer 30d to remove fine dust, and the dust is removed from the introduced air. (30a, 30b, 30c, and 30d) are provided to block the ventilation path of the air conditioning case 2', so the evaporator 51 and heater core 50
This results in a decrease in the amount of air supplied to the area, resulting in a decrease in heat exchange performance.

[The problem that the idea aims to solve]

In order to solve the above problem, this idea involves selectively switching the filter passage for both outside air and inside air in the inside and outside air intake passage from the outside air intake provided in the air conditioning case to the heat exchanger. Then,
without reducing the air volume supplied to the heat exchanger.
The purpose is to remove dust contained in the outside air.

[Means to solve the problem]

Therefore, this invention solves the above problem by providing a first outside air intake that is opened and closed by a main damper, and a second outside air intake on the upstream side of the filter of a duct having a filter. This problem is solved by selectively opening and closing the intake port using a second damper, and providing a first internal air intake port on the downstream side of the filter in the duct, and opening and closing the first internal air intake port using the first damper. It is.

More specifically, the air conditioner of this invention has the first
an air conditioning case provided with an outside air intake port and a communication port disposed near the first outside air intake port; a duct that communicates the main damper to be closed and a second outside air intake port connected to the communication port; a filter to be cut and disposed; and a first hole bored in the side wall of the duct between the filter and the opening of the duct.
an inside air intake; a first damper that selectively opens and closes the first inside air intake; a second inside air intake that is bored in a side wall of the duct between the filter and the second outside air intake; It has a second damper that selectively closes either the second inside air intake or the second outside air intake.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The drawings from FIG. 1 to FIG. 5 show an embodiment of this invention, and the body panel 1 shown in FIG.
A first outside air intake port 10 is provided in communication with the air conditioning case 2, and between the body panel 1 and the air conditioning case 2 at the first outside air intake port 10,
A sealing material 100 is interposed.

A communication port 21 is provided in the vicinity of the first outside air intake port 10 of the air conditioning case 2 to communicate the inside and outside air. Further, a main damper 4 is rotatably attached to the air conditioning case 2 by a shaft P1, and this main damper 4 connects the first outside air intake port 10 and the communication port 21.
Between the position shown by the solid line and the position shown by the chain line, either one is selectively closed (the position shown by the solid line).

Furthermore, the air conditioning case 2 includes a heater core 50,
An evaporator 51 and a blower (motor and fan) 52 are built in, and the air conditioning case 2
The air outlet 53 includes a heater outlet 530, a defroster outlet 531, and each event outlet (center vent outlet 532, side vent outlet 53).
3) is connected.

A temperature control damper 54 is rotatably attached to the heater core 50 by a shaft P2, and the temperature control damper 54 can be rotated between the position shown by the solid line and the position shown by the chain line. Therefore, the air from the blower 52 can be selectively blown from cold air supply that allows the air to pass only through the evaporator 51 to dehumidified warm air that allows the air to pass through both the evaporator 51 and the heater core 50.

Then, the opening 22 at one end of the duct 3 is directly connected to the communication port 21 of the space case 2, and the duct 3
The other end is attached so as to communicate with a second outside air intake port 11 provided in the body panel 1.

A filter 3 is installed across the duct 3 in the middle of the duct between the opening 22 at one end of the duct 3 and the other end of the duct 3 attached to the second outside air intake port 11.
Therefore, the second outside air intake port 11 is provided on the upstream side of the filter 30 of the duct 3. Filter 3 into this duct 3
In order to facilitate the maintenance of the filter 30, the filter 30 is installed in a cassette type and can be freely installed and removed. (It does not have to be a cassette type) Also, a first inside air intake port 31 is bored on the downstream side of the filter 3 on the side wall of the duct 3 between the filter 30 and the opening 22 of the duct 3. A first damper 6a that selectively opens and closes the first air intake port 31 is pivotally mounted in the duct 3 by a shaft P3 so as to rotate between a position shown by a solid line and a position shown by a chain line.

Furthermore, a second inside air intake 32 is bored on the upstream side of the filter 3 on the side wall of the duct 3 between the filter 30 and the second outside air intake 11. a second damper 6b that selectively closes either one of the two outside air intake ports 11;
is rotatably mounted in the duct 3 by a shaft 4 between the position shown by the solid line and the position shown by the chain line, and the second outside air intake 11 and the second inside air intake 32 of the duct 3 are connected to the filter 30. Filter passage 30 between
0 is formed.

The main damper 4, the first damper 6a, and the second damper 6b may be switched and operated by an independent operation device (not shown) such as a remote control cable (not shown), or by a vacuum actuator or a servo. Although this can be done with a motor or the like, the switching operation becomes easier if it is linked with the inside/outside air switching lever 70 of the heater control panel 7 shown in FIG. 2a.

That is, cables 80a and 80b are connected to cam devices 8a and 8b, respectively, which are driven by the rotating operation of the inside/outside air switching lever 70 of the heater control panel 7 shown in FIG. 2a. The operating free end 800a of the cable 80a is engaged with the lever 40 which is pivoted on the shaft P1 of the main damper 4, and selectively rotates the main damper 4 between the position shown by the solid line and the position shown by the chain line. Furthermore, the free operating end 800b of the cable 80b is engaged with a disk-shaped link 9 that is rotatably disposed in the duct 3 about an axis P5.

Each disc-shaped link 9 has a cam groove 9.
0 and 91 are opened, and the cam groove 90 selectively rotates the first damper 6a between the position shown by the solid line and the position shown by the chain line through the link lever 60. bell crank 61, rod 62 and lever 600
, the second damper 6b is selectively rotated between the position shown by the solid line and the position shown by the chain line.

Note that the heater control panel 7 shown in FIG. 2a has an outside air introduction mark 7a and a filter 30.
The outside air introduction mark 7b passing through the filter 30, the inside air circulation mark 7c passing through the filter 30, and the inside air circulation mark 7d not passing through the filter 30 are displayed. Therefore, in FIG. 2a, the outside air switching lever 70 is Since the outside air intake mark 7a is set at the position of the outside air intake mark 7a, the main damper 4 shown by the solid line in FIG. The first damper 6a and the second damper 6b shown in solid lines close the first inside air intake port 31 and the second inside air intake port 32 on the side wall of the duct 3, respectively, and allow the outside air shown by the arrow A to flow from the first outside air intake port 10. , are introduced into the air conditioning case 2 as shown by arrow B.

Next, as shown in FIG. 3, when the inside/outside air switching lever 70 is set to the outside air introduction mark 7b position passing through the filter 30, the first damper 6a and the second damper 6b are moved toward the duct 3 as shown by the solid line. While maintaining the first inside air intake port 31 and the second inside air intake port 32 in a closed state, the main damper 4 rotates in the direction of arrow C from the chain line illustration to the solid line illustration to open the filter passage 300 of the duct 3. , since the outside air shown by arrow A' from the second outside air intake port 11 flows from the filter passage 300 through the filter 30 into the communication port 21 of the air conditioning case 2, the filter 3
The outside air that has passed through 0 is introduced into the air conditioning case 2 as shown by arrow B.

Furthermore, as shown in FIG. 4, when the inside/outside air switching lever 70 is set to the inside air circulation mark 7c position passing through the filter 30, the first damper 6a is activated to move the first inside air on the side wall of the duct 3 as shown by the solid line. At the same time as maintaining the intake port 31 in the closed state, the second damper 6b rotates in the direction of arrow D from the chain line illustration to the solid line illustration to close the second outside air intake port 11 and close the second outside air intake port 11.
The inside air intake port 32 is opened to form a filter passage 300 for internal air circulation, and the inside air shown by arrow E from the second inside air intake port 32 flows from the filter passage 300 through the filter 30 into the communication port 21 of the air conditioning case 2. The inside air that has passed through the filter 30 is then introduced into the air conditioning case 2 as shown by arrow B.

Furthermore, as shown in FIG. 5, when the inside/outside air switching lever 70 is set to the inside air circulation mark 7d position where the air does not pass through the filter 30, the second damper 6b moves as shown by the solid line as shown in FIG. However, the first damper 6a shown by the chain line rotates in the direction of arrow F as shown by the solid line to open the first inside air intake port 31 on the side wall of the duct 3.
The inside air that does not pass through the filter 30 as shown by the arrow G from this first inside air intake port 31 flows into the communication port 21 of the air conditioning case 2 and is introduced into the air conditioning case 2 as shown by the arrow B.

[Effect of idea]

As described above, this invention includes a first outside air intake that is opened and closed by a main damper, a second outside air intake on the upstream side of the filter of a duct having a filter, and a second outside air intake and a second inside air intake. is selectively opened and closed by a second damper, and a first inside air intake is provided on the downstream side of the filter in the duct, and this first inside air intake is opened and closed by the first damper, so that the outside air introduced is If a large amount of dust is included, close the first outside air intake and supply filtered outside air to the heat exchanger from the second outside air intake. If the outside air to be introduced does not contain dust, close the first outside air intake and Since the outside air that does not pass through the filter can be supplied to the heat exchanger from the outside air intake port, the amount of air supplied to the heat exchanger does not decrease and the heat exchange performance does not deteriorate.

Moreover, since the inside air can be circulated from the first inside air intake without passing through a filter, it has many effects such as easily ensuring the maximum air volume.

[Brief explanation of the drawing]

The drawings from FIG. 1 to FIG. 5 show an embodiment of this invention. FIG. 1 is a sectional view of the overall structure, and FIGS. FIG. 3 is a diagram showing a damper state in which outside air is introduced through a filter; FIG. 4 is a diagram showing a damper state in which inside air is circulated through the filter; FIG. 5 is a diagram showing a damper state for internal air circulation that does not pass through a filter, and FIGS. 6 and 7 are diagrams of a conventional device. 10...First outside air intake, 11...Second outside air intake, 2...Air conditioning case, 21...Communication port, 22
...Opening, 3...Duct, 30...Filter, 3
1... First inside air intake, 32... Second inside air intake, 4... Main damper, 6a... First damper, 6b
...Second damper.

Claims (1)

[Scope of utility model registration request] Select either an air conditioning case provided with a first outside air intake and a communication port provided near the first outside air intake, or the first outside air intake or the communication port provided in the air conditioning case. a main damper that is closed automatically; a duct that communicates between the opening connected to the communication port and the second outside air intake; and an intermediate portion between the opening of the duct and the second outside air intake; a filter disposed across the duct, a first air intake hole bored in a side wall of the duct between the filter and the opening of the duct, and selectively opening and closing the first air intake hole. a first damper, a second inside air intake hole bored in the side wall of the duct between the filter and the second outside air intake hole, and one of the second inside air intake hole and the second outside air intake hole. and a second damper that selectively closes.