JP2000355211A - Air conditioning device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lead conditioned air to proper places in a compartment without protruding a duct from a floor surface and equalize air conditioning for right and left occupants on rear seats in a second row and a third row. SOLUTION: The conditioned air blown out from an air conditioning unit 10 arranged on a side wall 9 is led into a compartment by a main duct 21. The conditioned air from the main duct 21 is blown out below rear seats 3R, 3L in a third row through a pair of right and left auxiliary ducts 31R, 31L extended in the longitudinal direction of a vehicle between slide rails 4. A thickness of the ducts 21, 31R, 31L is equal to that of chip urethane, and upper faces of the ducts are made flush with a floor surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, in which conditioned air exchanged by an air conditioning unit is blown into a vehicle interior by a duct arranged on a floor in the vehicle interior.

[0002]

2. Description of the Related Art In a vehicle in which first to third rows of seats are arranged in the vehicle longitudinal direction, such as a so-called RV vehicle,
An air conditioning unit of an air conditioner (heating device or cooling / heating device) for the occupants of the rear seats in the second and third rows is installed, for example, in the right rear wall of the vehicle.

Conventionally, a duct is connected to an air outlet of an air conditioning unit installed in a rear right wall of a vehicle, and the duct is routed on a floor in a vehicle compartment and extended to the center of the vehicle.
Usually, the floor in the vehicle interior is configured by laying chip urethane and carpet on a floor panel for heat insulation and sound insulation, and the duct is provided on the carpet under the rear seat. The end of the duct extends to the center of the cabin,
At the end of the duct, there are two air outlets that blow air-conditioned air from the rear of the vehicle below the occupants of the left and right seats in the second row, respectively, and air conditioning from the front of the vehicle below the occupants of the left and right seats of the third row Two outlets for blowing out the wind are provided.

[0004]

However, such a conventional air conditioner has the following problems. (1) The duct extending in the left-right direction of the vehicle protrudes above the floor in the vehicle compartment, and the luggage compartment does not become flat. (2) Since the ducts extending in the left-right direction of the vehicle are routed on the floor, it is difficult to slide the rear seats of the second and third rows back and forth. That is, when the slide rail of the seat extends in the vehicle front-rear direction, the slide rail interferes with the duct, and the slide rail cannot be installed. Therefore, the rear seats in the second and third rows cannot be used as slide seats. Therefore, if the air conditioning air generated by the air conditioning unit is blown directly into the passenger compartment from the outlet provided on the side wall in order to install the slide rail, the temperature becomes uneven in the vehicle left-right direction, and the left side, that is, the downstream side Insufficient air conditioning for passengers in other seats.

An object of the present invention is to provide an air conditioner for a vehicle which can guide conditioned air to an appropriate place in a vehicle compartment without a duct protruding above a floor. Another object of the present invention is to make it possible to guide the conditioned air to an appropriate place in the vehicle compartment without the duct protruding above the floor, and to further equalize the air conditioning for the left and right occupants in the second and third rows. An object of the present invention is to provide a vehicle air conditioner.

[0006]

The present invention will be described with reference to the drawings of one embodiment. (1) The first aspect of the present invention is that the air-conditioning air exchanged by the air-conditioning unit 10 is subjected to heat insulation layers 43, 44 by the ducts 21, 31.
Is applied to an air conditioner for a vehicle that blows out on a floor panel 41 on which is laid. The above object is achieved by the following configuration. That is, duct 2
The thicknesses of the heat insulating layers 43 and 44 are made substantially the same as those of the heat insulating layers 43 and 44, and the ducts 21 and 31 are routed along the wiring traces of the ducts 21 and 31 on the floor panel 41 from which the heat insulating layers 43 and 44 have been removed. . (2) According to a second aspect of the present invention, in the vehicle air conditioner of the first aspect, the air outlet 31b is formed at the leading end of the ducts 21 and 31 so as to be flush with the floor panel 41. (3) The invention according to claim 3 is characterized in that the air conditioning unit 10 disposed inside the rear side wall of the vehicle and at least two left and right
A pair of left and right rear seats 2R, 2 which are arranged in a row and slide in the vehicle longitudinal direction along the slide rails 4, respectively.
L, 3R, 3L and a main duct 21 extending in the vehicle left-right direction at a position not interfering with the slide rails 4 and guiding the conditioned air blown out from the air conditioning unit 10 into the vehicle interior, and the vehicle between the slide rails 4. The main duct 2 extends in the front-rear direction.
The air-conditioning air introduced from 1 is paired with the left and right rear seats 3R, 3
The above-described object is achieved by providing a pair of left and right sub ducts 31R and 31L that blow out from the air outlets 31b that are respectively opened below L. (4) The invention of claim 4 is the vehicle air conditioner according to claim 3, wherein the thickness of the main and sub ducts 21, 31 is substantially the same as that of the heat insulating layers 43, 44 laid on the floor panel 41. The main and sub ducts 21 and 31 are arranged on the floor panel 41 from which the heat insulating layers 43 and 44 have been removed along the wiring locus of the sub ducts 21 and 31. (5) The invention according to claim 5 is the vehicle air conditioner according to claim 3 or 4, wherein the pair of left and right sub ducts 31R, 31R, 3R.
The air-conditioning air passage downstream of the main duct 21 is narrowed so that the amount of air-conditioning air blown out from 1 L is equalized. (6) The invention of claim 6 is the vehicle air conditioner according to any one of claims 3 to 5, wherein the pair of left and right sub ducts 31 is provided.
The duct support leg 31 is located downstream of the R, 31L outlet 31b.
e, and a space 31d communicating with the air outlet is provided inside the support leg 31e. (7) The invention of claim 7 is the vehicle air conditioner according to any of claims 3 to 6, wherein the member 21d for preventing the duct from being crushed in the vertical direction in the main duct 21 and the sub ducts 31R and 31L. , 21e, 31g, and 31h are provided at predetermined intervals.

[0007]

(1) According to the first, second and fourth aspects of the present invention, the thickness of the duct is made substantially equal to the thickness of the heat insulating layer, and the duct is routed in contact with the floor panel. It does not protrude above the floor of the car, and the floor of the vehicle interior and the floor of the luggage compartment become flat. (2) According to the third to seventh aspects of the present invention, the main duct is arranged so as to avoid interference with the slide rail, and the sub duct is routed between the slide rails of the pair of left and right rear seats in the vehicle longitudinal direction. Therefore, after the rear seats are slid, air-conditioning air can be blown almost evenly under the feet of the left and right occupants, and no temperature difference occurs. (3) According to the fifth aspect of the present invention, since the conditioned air passage on the downstream side of the main duct is narrowed, the flow rate of the conditioned air flowing through the downstream sub-duct and the upstream sub-duct can be substantially equalized. (4) According to the invention of claim 6, the duct support leg is provided downstream of the outlet of the sub duct, and a space communicating with the outlet is provided inside the support leg. Can be stored in this space. Further, the stability of the sub duct is improved by the support legs. (5) According to the seventh aspect of the present invention, since the crush prevention member is provided inside the duct, the duct is not crushed by the occupant.

In the section of the means for solving the above problems, reference numerals used in the drawings of the embodiments are used, but the present invention is not limited to the embodiments.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a vehicle air conditioner having a duct structure according to the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, three rows of seats are arranged in the vehicle front-rear direction. The first row is provided with a driver seat 1R and a passenger seat 1L, the second row is provided with left and right independent rear seats 2R and 2L, and the third row is provided with left and right independent rear seats 3R and 3L. ing. Second row of seats 2
The R, 2L and the third row of seats 3R, 3L are respectively guided by four slide rails 4 extending in the vehicle front-rear direction and independently slidable in the vehicle front-rear direction. The front doors 5R and 5L of the vehicles in FIGS. 1 and 2 are opening / closing doors, and the rear doors 6R and 6L are sliding doors.

In FIG. 2, an air conditioner 7 is installed at the front of the vehicle. The air conditioner 7 includes an air conditioning unit having a blower fan (not shown), an evaporator, and a heater core. The air conditioning unit appropriately cools and heats the air sucked by the blower fan according to the heat load inside or outside the vehicle, and blows out the conditioned air from an outlet (not shown). Left and right rear foot outlets 7a, 7b of air conditioner 7
Are connected to rear foot outlet ducts 8R and 8L, respectively. Ducts 8R and 8L for the rear foot foot outlet are the first
It is routed to the lower part of the row of seats 1R, 1L, and the outlets 8FR, 8FL of the rear seat foot outlet ducts 8R, 8L.
Conditioned air is blown out toward the rear seats of the vehicle.

An air conditioner 10 for a rear seat is provided in a body side 9 on the rear right side of the vehicle. Similarly to the air conditioner 7, the air conditioner 10 includes an air conditioner unit having a blower fan (not shown), an evaporator, and a heater core. This air conditioning unit also appropriately cools and heats the air sucked by the blower fan according to the heat load inside or outside the vehicle, and blows out the conditioned air from an outlet (not shown). A main duct 21 is connected to the air outlet 10a of the rear seat air conditioner 10, and the main duct 21 is connected to a pair of sub ducts 31R, 31R.
L is connected. The air-conditioned air outlet 31b at the tip of the sub ducts 31R, 31L is arranged below the seats 3R, 3L in the third row.

The main duct 21 is, as shown in FIG.
An air conditioning wind inlet 21a connected to the rear seat air conditioner 10,
Air conditioning wind outlet 21 to which sub ducts 31R and 31L are connected
b, 21c. The main duct 21 has a smaller duct cross-sectional area on the downstream side than on the upstream side in order to uniformly blow the introduced conditioned air to the sub ducts 31R and 31L. This duct structure will be described later.

FIG. 4 is a sectional view of the main duct 21 taken along line IV-IV in FIG. In FIG. 4, reference numerals 21d and 21e denote reinforcing projections projecting from the upper surface and the lower surface of the main duct 21 and connected to each other. The reinforcing projections 21d, 2
1e prevents collapse of the main duct 21 in the thickness direction. Reference numeral 21 f denotes a protrusion for securing a predetermined heat insulating space 42 between the upper surface of the floor panel 41 and the protrusion 21 protruding from the bottom surface of the duct 21. Chip urethane 43 which is a heat insulating layer is spread on the floor panel 41, and a carpet 44 is laid on the upper surfaces of the chip urethane 43 and the main duct 21. Chip urethane 43
It is removed along the wiring locus of the main duct 21. A carpet 44 is provided on the upper surface of the main duct 21 in advance. The main duct 21 is directly installed on the floor panel 41, and the upper surface of the main duct 21 is set to be the same plane as the two-layer floor of the chip urethane 43 and the carpet 44. In other words, the thickness of the main duct 21 is substantially equal to the thickness of the tip urethane 43. As a result, sub duct 3
1R does not protrude from the carpet surface.

FIG. 5 is a sectional view of the main duct 21 taken along the line V--V in FIG. 3. In FIG. 5, 21TK is a downstream air-conditioned air passage, and 21D is a dummy space which is spatially isolated from the air-conditioned air passage 21TK. The dummy space 21D is a closed space and does not flow any conditioned air. That is, the upstream-side air-conditioned air passage 21TJ shown in FIG. 4 has a larger cross-sectional area than the downstream-side air-conditioned air passage 21TK shown in FIG. Thus, the flow velocity of the downstream air-conditioned air passage 21TK increases, and the air-conditioned air volumes blown from the left and right sub ducts 31R and 31L become substantially equal. The thickness of the main duct 21 provided with the dummy space 21D is set to be the same as the thickness of the duct in the air-conditioned air passage 21T.

The sub duct 31L will be described with reference to FIGS. The left and right sub-ducts 31L and 31R are different from each other. Here, the sub-duct 31R will be described. FIG.
, The sub duct 31R has a connection port 31a. As shown in FIG. 7, the conditioned air outlets 21b and 21c of the main duct 21 are inserted into the connection port 31a, and
And the sub duct 31 are connected to each other.

In FIG. 6, an outlet 31b for blowing out the conditioned air blown from the rear air conditioner 10 is provided at the tip of the sub duct 31R. As shown in FIG.
Immediately upstream of the outlet 31b, an upward slope 31c is formed in the direction in which the conditioned air flows. This slope 31c
Thereby, the direction of the conditioned air blown out from the sub duct 31R becomes obliquely forward and upward. Further, as shown in FIG.
A dead space 31d for storing moisture and dust is formed downstream of 1b. This space 31d is a space necessary for molding the sub duct 31R by so-called blow molding. By forming this space 31d, a support leg 31e is also formed. With the support legs 31e, the tip of the sub duct 31R is grounded to the floor panel 41, and the sub duct 31R is stabilized.

As best shown in FIG.
A rectifying plate 31f for directing the conditioned air to be blown out of the vehicle is provided on the slope 31c of 1b. Secondary duct 31
The rectifying plate 31f of the R directs the conditioned air to the right side of the vehicle,
The L rectifying plate 31f is inclined so as to direct the conditioned air toward the left side of the vehicle.

In FIGS. 6 and 7, 31g and 31h
Are reinforcing projections projecting from the upper surface and the lower surface of the sub duct 31R and connected to each other. The reinforcing protrusions 31g and 31h prevent the sub duct 31R from being crushed in the thickness direction. At the bottom of the sub duct 31R, a protrusion 3 for providing a predetermined heat insulating space 42 between the sub duct 31R and the floor panel 41
1i is provided. As shown in FIG.
The tip urethane 43 has been removed in advance along the 1R wiring locus, and the sub duct 31R has been removed from the floor panel 4.
When the carpet 44 is installed directly on the sub-duct 31, the carpet 44 disposed on the upper surface of the sub duct 31 </ b> R and the carpet surface of the two-layer structure of the chip urethane 43 and the carpet 44 are set to be substantially the same plane. In other words, the thickness of the main duct 21 is substantially equal to the thickness of the chip urethane 43 which is a heat insulating layer. As a result, the sub duct 31R does not protrude from the carpet surface.

As shown in FIG. 7, the air-conditioning air outlet 31b of the sub duct 31R opens in substantially the same plane as the carpet 44, and the outlet 31b is provided with a grill 32 shown in FIG. The grill 32 includes a mounting board 32a, a rectangular opening 32b opened in the center of the board 32a, and a fixed louver 32c provided in the opening 32b and distributing the conditioned air blown obliquely forward. Grill 32 is sub duct 31R
Is fixed with screws so as to cover the air outlet 31b. Reference numeral 31j in FIG. 8 denotes a screw hole, and 32d in FIG. 7 denotes a screw hole.

The vehicle air conditioner thus constructed has the following operational effects. (1) The thickness of the main duct 21 and the sub ducts 31R and 31L is made substantially equal to the thickness of the chip urethane 43 which is a heat insulating layer, and these ducts are routed in contact with the floor panel 41. Therefore, the duct does not protrude above the floor in the vehicle compartment, and the floor in the vehicle compartment and the floor in the luggage compartment become flat. (2) The main duct 21 is disposed at the rearmost position in the vehicle cabin so as to avoid interference with the slide rail 4, and the sub ducts 31R, 31R
1 L was routed between the slide rails 4 in the vehicle front-rear direction. Therefore, after the rear seats of the second and third rows are slid, the conditioned air can be blown almost uniformly to the feet of the left and right occupants, and no temperature difference occurs.
In particular, since the dummy space 21D is provided on the downstream side of the main duct 31, the flow rate of the conditioned air flowing through the sub duct 31L on the downstream side and the sub duct 31R on the upstream side can be substantially equalized. (3) Since the thickness of the duct in the portion of the dummy space 21D is equal to the thickness of the chip urethane 43, the dummy space 21D
It is not necessary to spread the chip urethane 43 on the part, and the amount of chip urethane used can be reduced, which contributes to cost reduction.

(4) The straightening plate 3 is provided at the outlet of the sub duct 31.
If 1f is provided so that the conditioned air is blown out to the left and right feet of the occupant in the rear seat, more uniform air conditioning is performed. (5) Projections 21d and 21e are provided inside the main duct 21,
Projections 31g, 31h are provided inside the sub ducts 31R, 31L.
Is provided, so that the ducts 21 and 31 are not crushed by the occupants. (6) A duct support leg 31e is provided on the downstream side of the outlet 31b of the sub duct 31, and the outlet 3 is provided inside the support leg 31e.
Since the space 31d communicating with the space 1b is provided, dust and moisture of the air-conditioning style can be stored in the space 31d. Also,
The stability of the auxiliary duct 31 is improved by the support leg 31e.

In the above, the duct for guiding the conditioned air to the rear seats of the second and third rows of the RV vehicle has been described. Similarly, the ducts 8R and 8L for blowing out the rear seats of the air conditioner 7 are also described.
The ducts 8R and 8L may be made substantially flat with the floor in the vehicle compartment. RV vehicle with only the second row of rear seats, RV vehicle with non-sliding second and third rows, or R
The present invention can be applied to vehicles other than V to make the duct substantially flat with the floor surface. When three rows of rear seats are provided in the left-right direction and each slides independently, six slide rails are provided, so that three sub ducts may be provided.

Although the main duct 21 and the sub ducts 31R and 31L have a divided structure, they may be integrated. Although chip urethane is spread as a heat insulating layer, other heat insulating materials may be used.

[Brief description of the drawings]

FIG. 1 is an RV to which a vehicle air conditioner according to the present invention is applied;
Internal structure of the vehicle viewed from the side

FIG. 2 is a view of FIG. 1 as viewed from above.

FIG. 3 is a perspective view of a main duct.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is a perspective view of a sub duct.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is an enlarged perspective view of an outlet of a sub duct.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 6;

FIG. 10 is a perspective view of an outlet grill at the tip of a sub duct.

[Explanation of symbols]

2R, 2L: 2nd row rear seat 3R, 3L: 3rd row rear seat 4: slide rail 9: body side 10: rear seat air conditioner 21: main duct 21a: inlet 21b, 21c: outlet 21D: dummy duct 31R, 31L: Sub duct 31b: Outlet 41: Floor panel 42: Insulated space 43: Tip urethane 44: Carpet

Claims (7)

[Claims] 1. A vehicle air conditioner in which air-conditioning air exchanged by an air-conditioning unit is blown out onto a floor panel on which a heat insulating layer is laid by a duct, wherein the thickness of the duct is substantially the same as that of the heat insulating layer. An air conditioner for a vehicle, wherein the duct is routed on the floor panel from which the heat insulating layer has been removed along a routing locus of the duct. 2. The vehicle air conditioner according to claim 1, wherein the duct is formed with an air outlet that extends in the same plane as the floor panel. 3. An air conditioning unit disposed inside a rear side wall of the vehicle, a pair of left and right rear seats arranged in at least two rows on the left and right sides of the rear passenger compartment, and respectively slid in the vehicle front and rear direction along slide rails. A main duct that extends in the vehicle left-right direction at a position that does not interfere with the slide rail, and guides conditioned air blown out from the air conditioning unit toward the vehicle interior; An air conditioner for a vehicle, comprising: a pair of left and right sub ducts that blows out conditioned air introduced from a main duct from outlets opened below the pair of left and right rear seats. 4. The vehicle air conditioner according to claim 3, wherein the thickness of the main and sub ducts is substantially the same as the thickness of the heat insulating layer laid on the floor panel, and the thickness of the main and sub ducts is along the wiring locus of the main and sub ducts. The air conditioner for a vehicle, wherein the main and sub ducts are arranged on the floor panel from which a heat insulating layer has been removed. 5. The air-conditioning system according to claim 3, wherein the air-conditioning air passages downstream of the main duct are arranged such that the airflow of the air-conditioning air blown from the pair of left and right sub-ducts is equalized. An air conditioner for a vehicle, characterized in that the air conditioning system is narrowed. 6. A vehicle air conditioner according to claim 3, wherein a duct support leg is provided downstream of said air outlet of said pair of left and right sub ducts, and said air blower is provided inside said support leg. An air conditioner for a vehicle, wherein a space communicating with an exit is provided. 7. The vehicle air conditioner according to claim 3, wherein members for preventing the duct from being crushed in the vertical direction are provided in the main duct and the sub duct at predetermined intervals. Characteristic vehicle air conditioner.