JPH08156570A - Air conditioner - Google Patents

Abstract

PURPOSE: To assure sealing performance between a membrane member and a case of an air conditioner by making the bending stiffness value of the membrane member equal to or more than a specified value, and also make operating force for the membrane member as small as possible by making the bending stiffness value of the membrane member smaller than a specified value. CONSTITUTION: The bending stiffness value per unit width 10(mm) for an air mix door 13 and a blow-off mode switch-over door 20 is set at a value equal to or more than 1.1(μN.m<2> ) or less than 2.5(μN.m<2> ) (practically 2.14(μN.m<2> ) is used). By this constitution, the amount of air leaking out of an intake port sealed by the door 20 is controlled to be less than 0.00175(m<3> /s), and operating force required by each step motor at the respective doors 13 and 20 becomes less than 50(mN.m).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which a flexible film-shaped member having an opening for passing air is moved in an air conditioning case to switch the flow of air in the air conditioning case. Regarding

[0002]

2. Description of the Related Art For example, in a vehicle air conditioner disclosed in Japanese Unexamined Patent Publication (Kokai) No. 5-310029, both ends of a flexible film member (hereinafter referred to as a film door) having an opening for allowing air to pass through are air-conditioned. It is fixed to the drive shaft and the driven shaft that are rotatably supported in the case, and
It is stretched so as to face a plurality of outlets formed at the downstream end of the air conditioning case.

Further, a drive means is connected to the drive shaft, and the drive shaft is rotated by the drive means to move the film door, thereby switching the blowing mode.

[0004]

DISCLOSURE OF THE INVENTION As a result of an experimental study conducted by the present inventor on the above-described air conditioner in which the film-shaped member is moved in the air-conditioning case to switch the flow of air, the following has been found. For example, in the air conditioner disclosed in the above publication, in which the blowing mode is switched by the movement of the film door, the bending rigidity value (Young's modulus × second moment of area) of the film door is made too small (softened). Then, when wind pressure is applied to the film door, wrinkles occur in the film door.

When wrinkles are generated in this way, a gap is generated between the film door and the air-conditioning case in the wrinkled portion, and the air leaks from this portion. Therefore, the bending rigidity value of the film door must be set to a predetermined value or more in order to secure a predetermined sealing property. Therefore, a first object of the present invention is to ensure the sealing property between the film member and the air conditioning case by setting the bending rigidity value of the film member to a predetermined value or more.

If the bending rigidity value is too large, the driving force required for the drive shaft to wind up the film door becomes large. That is, when the film door becomes too hard, the film door cannot be bent according to the curved surface of the drive shaft, and as a result, the required operating force becomes large. In this case, if the drive means for rotating the drive shaft (for example, a servo motor, a step motor, etc.) is increased in size to increase the power, it is possible to manage even if the required operating force is increased as described above. it can. But,
In reality, there is also a problem such as a space in a place where the air conditioner is attached (for example, a vehicle interior), and the physique of the drive means cannot be increased so much. Therefore, the required operating force must be below a predetermined magnitude, and as a result, the bending rigidity value of the film door must be below a predetermined value.

Therefore, a second object of the present invention is to make the operating force of the film member as small as possible by setting the bending rigidity value of the film member to a predetermined value or less.

[0008]

In order to achieve the first object, in the invention according to claim 1, an air conditioning case (1) for introducing air into the room, and an air conditioning case (1) provided inside the air conditioning case (1), A flexible film-like member (13, 13) having openings (20a-20c) through which the air in the air-conditioning case (1) passes.
20) and a first rotary shaft (11, 1) fixed to one end side of the film-like member (13, 20) and winding the one end side.
7) and a second rotary shaft (12, 18) fixed to the other end of the film-like member (13, 20) and winding the other end.
And the first and second rotary shafts (11, 12, 17,
18) In an air conditioner equipped with a driving means for rotationally driving the film-shaped member (13, 20), a width of 10 (mm).
The air-conditioning device is characterized by a bending rigidity value of 1.1 (μN · m ² ) or more.

In order to achieve the above second object, in the invention according to claim 2, an air conditioning case (1) for guiding air into the room, and the air conditioning case (1) provided in the air conditioning case (1). 1) An opening (20a-
20c) a flexible film-like member (13, 20),
It is fixed to one end side of the film-like member (13, 20), and is fixed to the first rotating shaft (11, 17) that winds this one end side and the other end side of the film-like member (13, 20). , A second rotating shaft (12, 18) for winding the other end side,
And a drive means for rotationally driving the second rotating shaft (11, 12, 17, 18), in the bending rigidity value per width 10 (mm) of the film member (13, 20). Is characterized by an air conditioner having a value of 2.5 (μN · m ² ) or less.

In order to achieve the above first and second objects, in the invention according to claim 3, an air conditioning case (1) for introducing air into the room, and the air conditioning case (1) provided in the air conditioning case (1), A flexible film-like member (13, 13) having openings (20a to 20c) through which the air in the air conditioning case (1) passes.
20) and a first rotary shaft (11, 1) fixed to one end side of the film-like member (13, 20) and winding the one end side.
7) and a second rotary shaft (12, 18) fixed to the other end of the film-like member (13, 20) and winding the other end.
And the first and second rotary shafts (11, 12, 17,
18) In an air conditioner equipped with a driving means for rotationally driving the film-shaped member (13, 20), a width of 10 (mm).
Bending rigidity value per hit is 1.1 (μN · m ² ) or more 2.5
It is characterized by an air conditioner of (μN · m ² ) or less.

According to the invention described in claim 4,
The air conditioner according to any one of claims 1 to 3, wherein the film-shaped member (13, 20) includes a PPS film (201). The invention according to claim 5 is the air conditioner according to any one of claims 1 to 4, characterized in that the film-like member (13, 20) is provided with a nylon woven cloth (203). .

According to the invention described in claim 6, claim 1
In the air conditioner according to any one of claims 1 to 5, a plurality of outlets are formed at the air downstream end of the air conditioning case (1), and the film-like member (20) is provided on the upstream side of each of the outlets. It is characterized in that it is provided so as to face each of these outlets.

The reference numerals in parentheses of the above-mentioned means indicate the correspondence with the concrete means of the embodiments described later.

[0014]

The curve A in FIG. 1 indicates the width 1 of the film-shaped member.
The relationship of the sealing property of a film-shaped member and an air conditioning case with respect to the bending rigidity value per 0 (mm) is shown. From this, by setting the bending rigidity value of the film member to be 1.1 (μN · m ² ) or more, the amount of air leaked from between the film member and the air conditioning case is 0.00175 (m ³ / s). ) It turns out that it becomes the following. Therefore, in the invention according to claim 1, the leak amount can be set to 0.00175 (m ³ / s) or less, and the sealing property between the film-shaped member and the air conditioning case can be secured.

Curve B in FIG. 1 shows the width 1 of the film member.
The relationship of the operating force of a drive means with respect to the bending rigidity value per 0 (mm) is shown. From this, it can be seen that the operating force of the driving means is 50 (mN · m) or less by setting the bending rigidity value of the film-shaped member to 2.5 (μN · m ² ) or less. Therefore, according to the second aspect of the invention, the operating force of the drive means can be set to 50 (mN · m) or less, and the operating force of the film-shaped member can be reduced.

Further, in the invention according to claim 3, it is possible to realize both the above-mentioned securing of the sealing property and the reduction of the operating force.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment in which the present invention is applied as an air conditioner for an automobile will be described with reference to the drawings. FIG. 2 is an overall configuration diagram of the ventilation system of the present embodiment. An opening 2 is formed in the air-conditioning case 1, and a blower unit (not shown) accommodating a blower is provided in the opening 2 on the front side of the drawing, and the air-conditioner case 1 is driven by the blower. An air flow is generated inside.

Inside the air conditioning case 1, an evaporator 3 and a heater core 4 are provided in this order from the air upstream side. The evaporator 3 is a heat exchanger that constitutes a well-known refrigeration cycle together with a compressor, a condenser, and a pressure reducing means (not shown), and cools the air inside the air conditioning case 1. Further, the heater core 4 is
It is a heat exchanger through which engine cooling water flows, and heats the air in the air conditioning case 1.

A plurality of outlets (not shown) are formed at the air downstream end of the air conditioning case 1, and the ducts 5 for blowing the conditioned air toward the respective locations inside the vehicle compartment are provided on the downstream side of the respective outlets. 10 are provided. Of these, a defroster outlet (not shown) is formed at the tip of the duct 5 for blowing the conditioned air toward the inner surface of the windshield in the vehicle interior. A center face outlet (not shown) is formed to blow the air-conditioning air toward the front side of the duct 7, and a side face outlet (not shown) is formed at the tip of the duct 7 to blow the conditioned air toward the upper half of the side glass of the front passenger. There is.

Further, a rear face outlet (not shown) is formed at the tip of the duct 8 for blowing the conditioned air toward the upper half of the occupant of the rear seat.
A front foot outlet (not shown) for blowing out the conditioned air toward the feet of the front seat occupants is formed, and a rear foot outlet (not shown) for blowing out the conditioned air toward the feet of the rear seat occupants is formed at the tip of the duct 10. Has been formed.

In the air conditioning case 1, the first drive shaft 1
1 and the first driven shaft 12 are rotatably supported with respect to the air conditioning case 1. Both ends of an air mix door 13 made of a flexible film member are fixed and wound on the first drive shaft 11 and the first driven shaft 12. The air mix door 13 is configured such that the first drive shaft 11, the heater core 4, and the first driven shaft 12 allow the warm air passage 1 through which air passes through the heater core 4.
4, and a bypass passage 15 that bypasses the heater core 4,
16 and 16 are stretched so as to cross each.

The first drive shaft 11 is driven by its drive means (specifically a step motor) not shown, and the rotation of this first drive shaft 11 is a rotation transmission means (specifically wire) not shown. Is transmitted to the first driven shaft 12. The drive means in the invention described in claims 1 to 3 is composed of the drive means and the rotation transmission means in the present embodiment.

Further, the air mix door 13 is formed with an opening (not shown) for passing air.
The amount of air passing through the passages 14 to 16 is adjusted by rotating the first drive shaft 11 in both forward and backward directions by the step motor to stop the opening at an arbitrary position. The method for controlling the stop position of the air mix door 13 is controlled by the number of drive signals output from a control device (not shown) to the step motor.

In the air conditioning case 1, the second drive shaft 17, the second driven shaft 18, and the intermediate shaft 19 are also provided.
Is rotatably supported with respect to the air conditioning case 1.
The second drive shaft 17 and the second driven shaft 18
Both ends of a blowout mode switching door 20, which is made of a flexible film-shaped member, are fixed and wound around. The blowout mode switching door 20 is stretched by the second drive shaft 17, the intermediate shaft 19, and the second driven shaft 18 so as to face the air upstream side wall surface of each of the outlets.

The second drive shaft 17 is driven by its drive means (specifically, a step motor), and the rotation of the second drive shaft 17 is rotated by a rotation transmission means (specifically, a wire) not shown. 2 driven shaft 1
8 is transmitted. The drive means in the invention described in claims 1 to 3 is composed of the drive means and the rotation transmission means in the present embodiment.

Further, the blowout mode switching door 20 is formed with an opening (see FIG. 3 (a)) for passing air, and the second drive shaft 17 is rotated in both forward and reverse directions by the step motor. Then, the blowing mode is switched by stopping the opening at an arbitrary position.
The method for controlling the stop position of the blowout mode switching door 20 is as follows.
It is controlled by the number of drive signals output from a control device (not shown) to the step motor.

Further, in the air conditioning case 1, a cold air bypass passage 21 for guiding the cool air directly to the ducts 6 and 7 is formed, and a cold air bypass door 22 for opening and closing the cold air bypass passage 21 is provided. The cold air bypass door 22 opens the cold air bypass passage 21 at the time of max cool when the opening of the air mix door fully closes the hot air passage 14 and fully opens the bypass passages 15 and 16.

Next, the blowout mode switching door 20 will be described with reference to FIG. Here, FIG. 3A is a development view of the blowing mode switching door 20, and FIG.
It is an AA arrow sectional drawing of (a). As shown in FIG. 3A, the blowing mode switching door has a plurality of openings 20a-2.
0c is formed. Then, the second drive shaft 17 fixed to one end 20e of the door 20 and the other end 20
3 and the second driven shaft 18 fixed to d.
(A) By moving in the left-right direction, the positional relationship between the openings 20a to 20c and the outlets (not shown) is changed, and the blowing mode is switched.

The blowing mode switching door is shown in FIG. 3 (b).
As shown, the film thickness is 50 (μm) and the Young's modulus is 3920.
(MN / m ² ) on both sides of the PPS film 201,
Adhesive 202 having a film thickness of 5 (μm) and Young's modulus of 9.8 (MN / m ² ) (specifically, NBR modified epoxy adhesive)
The film thickness is 80 (μm) and Young's modulus is 98 (MN
/ M ² ), a nylon woven cloth 203 having a thickness of 5 (μ) is adhered to both surfaces of the nylon woven cloth 203.
m), the Young's modulus of which is 6.9 (MN / m ² ) and the silicone coating agent 204 is applied.

The air mix door 13 has a five-layer structure including the above-mentioned 20a to 20d, just like the blowout mode switching door 20. The air mix door 13 and the blowout mode switching door 20 having the five-layer structure are
Bending rigidity value per width 10 (mm) is 1.1 (μN · m
² ) or more and 2.5 (μN · m ² ) or less, and in the present embodiment, the bending rigidity value is 2.1 or more.
It is set to 4 (μN · m ² ).

As described above, in this embodiment, since the bending rigidity values of the air mix door 13 and the blowout mode switching door 20 are 2.5 (μN · m ² ) or less, as can be seen from FIG. The operating force of the first and second drive shafts 11 and 17 due to can be set to 50 (mN · m) or less. Therefore, the doors 13 and 20 can be operated with ease without increasing the size of the step motor. Since the size of the step motor can be reduced, the space in the vehicle compartment for housing the air conditioning case 1 can be reduced.

In particular, since the bending mode switching door 20 has a bending rigidity value of 1.1 (μN · m ² ) or more, the outlets sealed by the door 20 among the outlets (not shown) are selected. The amount of leaked air is 0.0017
It is less than 5 (m ³ / s). Therefore, for example, in the face mode in which the conditioned air is blown from the face outlet, it is possible to prevent the wind from leaking from the defroster outlet and reducing the amount of air originally blown from the face outlet.

[Brief description of drawings]

FIG. 1 is a graph showing a relationship between a bending rigidity value of a film member and an operating force of a drive unit and a sealing property of the film member according to the present invention and an embodiment.

FIG. 2 is an overall configuration diagram of ventilation of the above embodiment.

FIG. 3A is a blowout mode switching door 2 of the above embodiment.
0 is a developed view, and (b) is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air-conditioning case, 11 ... 1st drive shaft (1st rotating shaft), 12 ... 1st driven shaft (2nd rotating shaft), 13
... Air mix door (membrane member), 17 ... Second drive shaft (first rotation shaft), 18 ... Second driven shaft (second)
Rotating shaft), 20 ... blowout mode switching door (membrane member),
20a to 20c ... Opening portion, 201 ... PPS film, 2
03 ... Nylon woven cloth

Claims (6)

[Claims] 1. An air-conditioning case for guiding air into a room, a flexible film-like member provided in the air-conditioning case and having an opening through which the air in the air-conditioning case passes, and one end of the film-like member. A first rotating shaft fixed to the side of the film member, and a second rotating shaft fixed to the other end of the film-shaped member, and rotating to the other end of the film-shaped member; An air conditioner having a drive means for rotationally driving the rotating shaft of the above, wherein the film member has a bending rigidity value per width 10 (mm) of 1.1 (μN · m ² ) or more. Air conditioning system to. 2. An air conditioning case for guiding air into the room, a flexible film member provided in the air conditioning case and having an opening for allowing the air in the air conditioning case to pass therethrough, and one end of the film member. A first rotating shaft fixed to the side of the film member, and a second rotating shaft fixed to the other end of the film-shaped member, and rotating to the other end of the film-shaped member; An air conditioner provided with a drive means for rotationally driving the rotating shaft of the above, wherein the film member has a bending rigidity value per width 10 (mm) of 2.5 (μN · m ² ) or less. Air conditioning system to. 3. An air conditioning case for guiding air into the room, a flexible film member provided in the air conditioning case and having an opening for allowing the air in the air conditioning case to pass therethrough, and one end of the film member. A first rotating shaft fixed to the side of the film member, and a second rotating shaft fixed to the other end of the film-shaped member, and rotating to the other end of the film-shaped member; In the air conditioner having a driving means for rotationally driving the rotating shaft of No. 1, the bending rigidity value per width 10 (mm) of the film-shaped member is 1.1 (μN · m ² ) or more and 2.5 (μN · An air conditioner characterized by being m ² ) or less. 4. The air conditioner according to claim 1, wherein the film member includes a PPS film. 5. The air conditioner according to claim 1, wherein the film-shaped member includes a nylon woven cloth. 6. A plurality of outlets are formed at an air downstream end of the air-conditioning case, and the film-shaped member is provided on an upstream side of each of the outlets directly upstream of the air so as to face each of the outlets. The air conditioner according to any one of claims 1 to 5, wherein