JP3246121B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film damper for selectively opening and closing a defroster outlet, a face outlet and a foot outlet, and a vehicle air conditioner equipped with a drive motor for driving the film damper. It is about.

[0002]

Conventionally, fill <br/> vehicle air conditioning apparatus 100 to perform the Mudanpa 101 to switch the air outlet mode, consisting of a flexible thin film member as shown in FIG. 6 is there. This is when the bi-level mode in which the face outlet 102 and the foot outlet 103 are both opened ,
A part of the ventilation passage 106 for sending air from the evaporator 104 or the heater core 105 to the face outlet 102 is formed by a film.
The damper 101 is closed. In addition,
The film damper 101 has a film-like portion 107 for closing the ventilation passage 106 and an opening for opening the ventilation passage 106.

[0003]

However, in the prior art, as shown in FIG.
When one film- like portion 107 closes a part of the ventilation path 106, the film- like part 10 closing a part of the ventilation path 106
The air does not flow into the windward area A of No. 7 and the windward area A of the film-like portion 107 becomes a so-called dead water area. That is,
The film damper 101 is stable when pressed by wind pressure. However, when the film damper 101 is at the position shown in FIG. 6, dynamic pressure is applied to the film-like portion 107 closing a part of the ventilation passage 106 in the bi-level mode. , Film damper 101
Becomes unstable.

Further, a part of the air that has passed through the opening 108 of the film damper 101 flows into the leeward side region B of the film-like portion 107, and turbulence of the air flow occurs in the leeward side region B of the film-like portion 107. The turbulence of the air flow in the leeward area B of the film-like portion 107 causes the film-like portion 107 of the film damper 101 to vibrate, causing a problem that abnormal noise is generated.

The present invention relates to a film-like portion of a film damper.
And to provide an air conditioner capable of preventing the generation of noise by suppressing vibration of the film damper when are more closed part of the air passage.

[0006]

According to a first aspect of the present invention , there is provided a ventilation passage through which air flows, and a ventilation passage provided in the ventilation passage.
It is a flexible thin film for adjusting the ventilation area of the ventilation passage
A film-like portion made of a member, which closes the ventilation path, and
A film damper having an opening portion that opens said air passage, said passage by a membrane-like portions of said film damper
When a part of the air passage is closed, a part of the air passage is closed.
In the windward area of the blocking membrane, the sky
In the air conditioning apparatus between is formed, on the windward side of the ventilation passage from the film damper adopts the technical means of arranging the guide member for guiding the air in the space to be the dead water.

According to a second aspect of the present invention, there is provided an air passage through which air flows, and a flexible thin-film member provided in the air passage for adjusting a ventilation area of the air passage.
A film-like portion for closing the ventilation path, and opening the ventilation path
A film damper having an opening portion that, the Fi
A part of the ventilation path is closed by the membrane part of the Lum damper.
A film-like portion that blocks a part of the ventilation path when
In the leeward area of, there is a space where turbulence of air flow occurs
In the air conditioning apparatus is, in the film windward side of the ventilation passage from the damper employs the technical means disposed a rectifying member configured to rectify the air flow toward the space <br/> turbulence of the air flow is generated .

According to a third aspect of the present invention, there is provided an air passage through which air flows, and a flexible thin film member provided in the air passage for adjusting a ventilation area of the air passage.
A film-like portion for closing the ventilation path, and opening the ventilation path
A film damper having an opening portion that, the Fi
A part of the ventilation path is closed by the membrane part of the Lum damper.
A film-like portion that blocks a part of the ventilation path when
In the leeward area of, there is a space where turbulence of air flow occurs
In the air conditioning apparatus is, on the leeward side of the ventilation passage from the film damper, the opening portion of said film damper
Technical means in which a shielding member for preventing the passing air from flowing into the space where the turbulence of the air flow occurs is employed.

[0009]

According to the first aspect of the present invention, the guide member arranged in the air passage on the windward side of the film damper closes a part of the air passage of the film damper. When the air is guided to the region , that is, the space serving as the dead water region, the wind pressure in the windward region of the film-like portion closing a part of the ventilation path of the film damper approaches the wind pressure in the leeward region. This suppresses the vibration of the film damper even when a part of the ventilation path is closed by the film-like portion of the film damper.

According to the second aspect of the present invention, the rectifying member disposed in the air passage on the windward side of the film damper blocks the leeward region of the film-like portion that partially blocks the air passage.
Air flow toward the area where the turbulent air flow occurs ,
Turbulence of the airflow flowing in the ventilation path is suppressed. Thus, even when closes the part of the air passage at the film-like portion of the film damper, since the disturbance of the air flow on the leeward side region of the membranous portion of the film damper is suppressed, vibration of the film damper is suppressed Is done.

According to the third aspect of the present invention, the shielding member disposed in the ventilation passage on the leeward side of the film damper closes a part of the ventilation passage of the film damper on the leeward side. Without the air sneaking into the area,
Turbulence of air flow through the opening of the film damper
A film damper without sneaking into the space where the flow occurs
By flowing in the ventilation path on the leeward side, the turbulence of the airflow in the leeward side area of the film-like portion of the film damper is suppressed,
In addition, the difference between the wind pressure in the windward region and the wind pressure in the leeward region of the film-like portion that blocks a part of the ventilation path of the film damper is reduced. This suppresses the vibration of the film damper even when a part of the ventilation path is closed by the film-like portion of the film damper.

[0012]

Next, a description will be given of a plurality of embodiments in which the air conditioner of the present invention is applied to an air conditioner for a vehicle.

[First Embodiment] FIGS. 1 to 3 show a first embodiment of the present invention, and FIG. 1 shows an air conditioner for a vehicle.

An air conditioner 1 for an automobile includes a duct 2 through which air flows, a blower (not shown) for generating an air flow in the duct 2 toward a vehicle cabin, and an evaporator arranged in the duct 2. 3 and heater core 4,
An air mix damper 5 for adjusting the mixing ratio of cold air and hot air, a plate damper 6 arranged in the duct 2, an air outlet switching damper 7 for switching the air outlet mode, and a guide 8 formed integrally with the duct 2. It is composed of

At the most leeward side of the duct 2, a defroster outlet 9 for blowing airflow toward the inside surface of the windshield, a face outlet 10 for blowing airflow toward the occupant's head and chest, a foot portion of the occupant A foot outlet 11 that blows out the airflow toward is formed. Further, inside the duct 2, there is formed a cool air bypass 12 which guides the cool air blown out from the evaporator 3 to the face outlet 10 by bypassing the heater core 4.

On the leeward side of the evaporator 3 in the duct 2, there are formed an introduction passage 13 for sending cool air blown from the evaporator 3 to the heater core 4, and detour passages 14 and 15 for bypassing the heater core 4. Have been. Further, on the leeward side of the heater core 4 in the duct 2, the heater core 4 or the bypass passage 1 is provided.
An air passage 16 is formed to guide the air passing through 4 and 15 to the defroster outlet 9 and the face outlet 10.
On the right side of the ventilation path 16 in the figure, a ventilation path 17 connecting the ventilation path 16 and the foot outlet 11 is formed.

When a blower switch (not shown) provided on a control panel (not shown) is operated, a blower motor (not shown) is started, and a predetermined air flow is set according to the rotation speed of the blower motor. Get. The evaporator 3 is a component of the refrigeration cycle, and cools the air by exchanging heat between the flowing refrigerant and the air passing through the duct 2 when an air conditioner switch (not shown) of the control panel is operated.

The heater core 4 heats the air by exchanging heat between the engine cooling water supplied therein and the air passing through the duct 2 by opening a hot water valve (not shown) after the engine is started.

The air mix damper 5 is made of a flexible thin-film resin member. The air mix damper 5 moves along the introduction passage 13 and the detour passages 14 and 15 to determine the amount of air passing through the heater core 4 and the heater core. Adjust the ratio with the amount of air bypassing 4. The air mix damper 5 has both ends fixed to winding shafts 18 and 19 rotatably supported by the duct 2, respectively, and an opening portion for opening the introduction passage 13 or the bypass passages 14 and 15 ( (Not shown)
have.

The end of the take-up shaft 18 is provided at the end of the take-up shaft 18 according to the set position of a temperature control lever (not shown) provided on the control panel or the output of a control device (not shown). A servo motor (not shown) for rotating the motor by a predetermined rotation angle is attached.

The plate damper 6 adjusts the opening ratio of the cool air bypass 12. One end of the plate damper 6 is fixed to a shaft 20 rotatably supported by the duct 2.
A servo motor (not shown) for rotating the shaft 20 by a predetermined rotation angle is attached to the shaft 20.

The outlet switching damper 7 is the film damper of the present invention, and is made of a flexible thin-film resin member. The air outlet switching damper 7 moves in a state in which it faces the defroster air outlet 9 and is inclined with respect to the airflow flowing in the air passages 16 and 17, so that the air passage 1
The openings 6 and 17, that is, the openings of the defroster outlet 9, the face outlet 10 and the foot outlet 11 are adjusted.

The air outlet switching damper 7 has both ends fixed to winding shafts 21 and 22 rotatably supported by the duct 2, respectively, and abuts an intermediate shaft 23 fixed to or integral with the duct 2. It is stretched in contact. Further, as shown in FIG. 2, the outlet switching damper 7 has film-like portions 24 and 25 for closing the ventilation passages 16 and 17 and an opening 26 for opening the ventilation passages 16 and 17.

The end of the take-up shaft 21 is provided at the end of the take-up shaft according to the outlet mode set by an outlet mode switching lever (not shown) provided on the control panel or the output of the control device. A servo motor (not shown) for rotating the motor 21 by a predetermined rotation angle is attached.

The outlet mode switching lever is a defroster mode in which hot air is mainly blown out from the defroster outlet 9.
A face mode in which mainly cool air is blown out from the face outlet 10, a foot mode in which warm air is mainly blown out from the foot outlet 11, and a cool air is mainly blown out from the face outlet 10 and mainly from the foot outlet 11. It is possible to switch to a bi-level mode for blowing out hot air.

Here, the air outlet mode switching dam of the duct 2
When the outlet mode is in the bi-level mode , that is, when the outlet mode switching damper 7 is
When the membrane portion 24 closes a part of the ventilation passage 16 ,
A space is provided such that the wind pressure in the windward area A of the film portion 24 of the outlet mode switching damper 7 is smaller than the wind pressure in the leeward region B of the film portion 24 . That is, in the windward area A of the film- like portion 24 of the outlet mode switching damper 7 ,
The space is formed a dead water and ing, the <br/> leeward side region B of the membrane-like portion 24, the space turbulence of the air flow is generated form
Have been.

For this reason , the air outlet mode switching damper 7
In the ventilation path 16 on the windward side, the outlet mode is bi-level.
In the mode, a film-like portion closing a part of the ventilation passage 16
24 to guide air to the windward area A
A guide 8 as a member is provided. And the guide
8 is extended toward the wind on the side of the opening portion 26 side edge of the membrane portion component 24 of the outlet switching dampers 7 from the outlet side central portion of the heater core 4, the left side region C of the guide 8
And in order to facilitate air with each other and mixed in the right side region D of the guide 8, also a plurality of cutout portions 27 in order to prevent a decrease in generation and air flow of wind noise the membrane-like portion 24 is formed in the longitudinal direction.

[Operation of the First Embodiment] Next, the operation of the vehicle air conditioner 1 of this embodiment will be briefly described with reference to FIGS.

When the blower switch and the air conditioner switch are turned on, air is sent into the evaporator 3 by the blower. At this time, since the refrigerant is flowing in the evaporator 3, the air is cooled and blown to the leeward side of the evaporator 3. Then, the winding shaft 18 is driven by the electric motor in accordance with the set position of the temperature control lever, and the air mix damper 5 moves along the introduction passage 13 and the bypass passages 14, 15, whereby the duct 2 is moved. The leeward temperature is adjusted.

On the other hand, when the outlet mode switching lever is set to the face mode, the winding shaft 2 is driven by the electric motor.
1 is driven and the outlet switching damper 7 moves, so that the membrane portion 25 closes the ventilation path 17. That is,
Only the face outlet 10 communicates with the opening 26 formed in the outlet switching damper 7, and cool air is mainly blown out from the face outlet 10 toward the head and chest of the occupant through the ventilation path 16.

At this time, the ventilation passage 1 is
The cold air introduced into 6 is located on the left side area C of the guide 8 in the drawing.
The air flow flowing toward the face outlet 10 through the opening 26 of the outlet switching damper 7 and the plurality of notches 2 of the guide 8
7 and mixed with the cool air flowing in from the bypass passage 15 through the right side area D of the guide 8 in the drawing, and the face outlet 10 through the opening 26 of the outlet switching damper 7.
Into the airflow going to. Thereby, the ventilation path 16
By providing the guide 8 inside, it is possible to prevent a decrease in the air volume and a distribution of the blowing temperature.

When the outlet mode switching lever is set to the foot mode, the winding shaft 21 is driven by the electric motor.
Is driven and the outlet switching damper 7 moves toward the winding shaft 22, so that the membrane portion 24 closes the ventilation path 16. That is, only the opening 26 formed in the outlet switching damper 7 and the foot outlet 11 communicate with each other,
Warm air is mainly blown out from the foot outlet 11 toward the feet of the occupant via the air outlets 6 and 17.

At this time, the warm air introduced into the ventilation passage 16 from the outlet side of the heater core 4 passes through the right side area D of the guide 8 and the opening 26 of the outlet switching damper 7 to the air passage 17 toward the ventilation passage 17. The flow and the right side area D of the guide 8 from the left side area C of the guide 8 through the plurality of notches 27
There is an air flow wrapping around. Therefore, the mixture is mixed in the right side region D of the guide 8 in the drawing, so that it is possible to prevent a decrease in the air volume and a distribution of the blowout temperature as in the face mode.

When the outlet mode switching lever is set to the bi-level mode, the winding shaft 21 is driven by the electric motor, and the outlet switching damper 7 is moved. Partly closed.
That is, the opening 2 formed in the outlet switching damper 7
6, the face air outlet 10 and the foot air outlet 11 communicate with each other, and the cool air is mainly blown out from the face air outlet 10 toward the head and chest of the occupant through the air passage 16 and through the air passages 16 and 17. Warm air is mainly blown out from the foot outlet 11 toward the feet of the occupant.

At this time, the air introduced from the outlet side of the heater core 4 into the right area D of the guide 8 in the drawing is
6. The air is blown out from the foot air outlet 11 through the opening 26 of the air outlet switching damper 7 and the air passage 17. Further, the air introduced from the outlet side of the heater core 4 into the illustrated left side region C of the guide 8 flows into the windward region A of the film-like portion 24 of the outlet switching damper 7, and the airward side surface of the film-like portion 24 The air is blown out from the face air outlet 10 through the opening 26 of the air outlet switching damper 7 between the front end of the guide 8 and through the plurality of notches 27. Therefore, when the wind pressure in the windward region A of the film portion 24 of the outlet switching damper 7 approaches the wind pressure in the leeward region B, a part of the ventilation path 16 is formed by the film portion 24 of the outlet switching damper 7. Even when it is closed, that is, in the bilevel mode, the vibration of the film-like portion 24 of the outlet switching damper 7 is suppressed.

[Effects of the First Embodiment] As described above, even in the bi-level mode, the air conditioner 1 for a vehicle is formed by the film 8 of the air outlet switching damper 7 by the guide 8 in the air passage 16. By circulating the air into the windward area A of the portion 24, the wind pressure of the windward area A of the film-shaped portion 24 of the outlet switching damper 7 can be made closer to the wind pressure of the windward area B. As a result, the film-like portion 2 of the outlet switching damper 7
4 can be suppressed, so that generation of abnormal noise from the outlet switching damper 7 can be prevented.

[Second Embodiment] FIG. 4 shows a second embodiment of the present invention, and is a view showing an air conditioner for an automobile.

In this embodiment, instead of the guide 8 of the first embodiment, the bypass passage openings 14 and 15 in the duct 2 are closed.
As described above, the grid-shaped or honeycomb-shaped rectifying members 31, 32 are attached. Therefore, the bypass passages 14 and 15
Are rectified by the rectifying members 31 and 32, and the warm air that has passed through the heater core 4 is rectified by the core portion of the heater core 4.

Thus, the turbulence of the airflow flowing into the ventilation passage 16 of the duct 2 can be suppressed, so that the airflow is generated on the leeward side of the outlet switching damper 7 through the opening 26 of the outlet switching damper 7. Turbulent flow can be suppressed.
For this reason, even in the bi-level mode, that is, even when a part of the ventilation path 16 is closed by the film portion 24 of the outlet switching damper 7, the leeward area of the film portion 24 of the outlet switching damper 7 can be improved. B turbulence can be suppressed. As a result, similarly to the first embodiment, the film-like portion 24 of the outlet switching damper 7 is formed.
Therefore, the generation of abnormal noise from the outlet switching damper 7 can be prevented.

[Third Embodiment] FIG. 5 shows a third embodiment of the present invention and is a diagram showing an air conditioner for a vehicle.

In this embodiment, a guide 33 is integrally formed on the inner wall surface of the duct 2 instead of the guide 8 of the first embodiment. The guide 33 is a shielding member of the present invention, and is provided in the ventilation passage 16 so as to connect the edge of the membrane portion 24 of the outlet switching damper 7 on the opening 26 side and the face outlet 10 in the bi-level mode. Is formed.

Accordingly, even if air does not flow into the windward area A of the film portion 24 of the outlet switching damper 7, air does not flow into the leeward region B of the film portion 24 of the outlet switching damper 7. No turbulence is generated in the leeward area B. Further, since both the leeward region A and the leeward region B of the film portion 24 of the outlet switching damper 7 are dead water regions, the leeward region A of the film portion 24 of the outlet switching damper 7 becomes dead water.
And the wind pressure in the leeward side region B disappears. As a result, even in the bi-level mode, that is, when a part of the ventilation path 16 is closed by the film-like portion 24 of the outlet switching damper 7, as in the first embodiment, the outlet switching damper 7 is closed. Since vibration of the film portion 24 can be suppressed, generation of abnormal noise from the outlet switching damper 7 can be prevented.

In this embodiment, when the face air outlet 10 is fully opened by the opening 26 of the air outlet switching damper 7, as in the face mode, cold air passes through both the left side area and the right side area of the guide 33 in the drawing. Therefore, it is possible to prevent a decrease in air volume.

[Modification] In this embodiment, the film damper (flexible thin film) of the present invention is used.
The film-like resin member), is applied to the outlet switching dampers 7 for switching the air outlet mode, a film damper of the present invention,
Amount of air passing through heater core 4 and bypassing heater core 4
The present invention may be applied to an air mix damper 5 that adjusts the ratio to the amount of air that flows. In this embodiment, the present invention is applied to the air conditioner 1 for a vehicle. However, the present invention may be applied to other air conditioners for a vehicle, or a stationary type air conditioner for home use, factory use, and the like. . In the bilevel mode or the differential foot mode, a part of the ventilation path 17 is
The guides 8 and 33 of the first and third embodiments may be provided on the windward or leeward side of the film-like portion 25 for the type that is closed. The guides 8 and 33 may be members that rotate like dampers. Then, it may be set to the illustrated position only in the bilevel mode.

[0045]

According to the first aspect of the present invention, a film-like portion of a film damper is provided in a ventilation path on the windward side of the film damper.
Water formed when a part of the ventilation path is closed
Frequency become Ri by <br/> to providing a guiding member for guiding the air into the space, even when it is closed a portion of the air passage at the film-like portion of the film damper, closed part of the passing air passage The wind pressure in the leeward region of the film-shaped portion can be made closer to the leeward region. For this reason, since vibration of the film damper can be suppressed, generation of abnormal noise from the film damper can be prevented.

[0046] According to a second aspect of the invention, the wind under side of the ventilation passage from the film damper, the film-like portion of the film damper
When a part of the ventilation path is closed, the turbulence of the air flow
The space that occurs is formed, and the windward side of the film damper
A rectifying unit for rectifying an air flow toward the space in the ventilation path
By providing the timber, even when closes the part of the air passage at the film-like portion of the film damper, it is possible to suppress the turbulence of air flow on the leeward side region of the membranous portion of the film damper. For this reason, since vibration of the film damper can be suppressed, generation of abnormal noise from the film damper can be prevented.

According to a third aspect of the present invention, in the ventilation passage on the leeward side of the film damper, the film-like portion of the film damper is provided.
When a part of the ventilation path is closed, the turbulence of the air flow
The space that occurs is formed,
In the ventilation path, the above that passed through the opening of the film damper
By providing a shielding member that prevents sneaking into the space ,
Even when closes the part of the air passage at the film-like portion of the film damper, it is possible to suppress the disturbance of the air flow on the leeward side region of the membranous portion of the film damper, and the film damper ventilation line one The difference between the wind pressure in the windward region of the film-like portion closing the portion and the wind pressure in the leeward region can be reduced. For this reason, since vibration of the film damper can be suppressed, generation of abnormal noise from the film damper can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an air conditioner for a vehicle used in a first embodiment of the present invention.

FIG. 2 is a developed view showing a main part of an outlet switching damper of the air conditioner for a vehicle shown in FIG. 1;

FIG. 3 is a front view showing a guide of the automotive air conditioner of FIG. 1;

FIG. 4 is a schematic view showing an automotive air conditioner used in a second embodiment of the present invention.

FIG. 5 is a schematic diagram showing an automotive air conditioner used in a third embodiment of the present invention.

FIG. 6 is a schematic view showing a conventional automobile air conditioner.

[Explanation of Codes] A windward area of the film-shaped portion (space serving as dead water area) B- windward area of the film-shaped portion (the sky where turbulent airflow occurs)
1 ) Air conditioner for automobiles 2 Duct 7 Air outlet switching damper (film damper) 8 Guide (guide member) 16 Ventilation path 24 Membranous part 26 Opening part 31 Rectifying member 32 Rectifying member 33 Guide (shielding member)

Claims (3)

(57) [Claims] 1. A ventilation passage through which air flows, and the ventilation passage
Is provided in the inside and is flexible to adjust the ventilation area of the ventilation path.
A film-like member for closing the ventilation passage
Min, and a Fi <br/> Rumudanpa having an opening portion that opens said air passage, part of the air passage by a membrane-like portions of said film damper
When the air is closed, a part of the ventilation path is closed.
In the windward area of the membrane, there is a dead water area.
Is the air conditioning apparatus, on the windward side of the ventilation passage from the film damper, the dead water
An air conditioner, wherein a guide member for guiding air to a space serving as a region is arranged. 2. A ventilation path through which air flows, and the ventilation path
Is provided in the inside and is flexible to adjust the ventilation area of the ventilation path.
A film-like member for closing the ventilation passage
Min, and a Fi <br/> Rumudanpa having an opening portion that opens said air passage, part of the air passage by a membrane-like portions of said film damper
When the air is closed, a part of the ventilation path is closed.
In the leeward area of the film-like portion, there is a space where turbulent airflow occurs.
In the air conditioner in which a gap is formed, the air is disposed in a ventilation path on the windward side of the film damper.
An air conditioner, comprising: a rectifying member for rectifying an air flow toward a space where a turbulent flow is generated . 3. A ventilation path through which air flows, and the ventilation path
Is provided in the inside and is flexible to adjust the ventilation area of the ventilation path.
A film-like member for closing the ventilation passage
Min, and a Fi <br/> Rumudanpa having an opening portion that opens said air passage, part of the air passage by a membrane-like portions of said film damper
When the air is closed, a part of the ventilation path is closed.
In the leeward area of the film-like portion, there is an
In the air conditioner in which a gap is formed , the filter is disposed in a ventilation passage leeward of the film damper.
Disturbance of the air flow of the air passing through the opening of the Lum damper
An air conditioner, comprising a shielding member for preventing a flow into a space where a flow is generated .