JP6837778B2 - Vehicle air conditioner - Google Patents

Description

The present invention relates to a vehicle air conditioner that regulates a vehicle interior temperature.

Conventionally, various air conditioners for vehicles provided with a side vent air outlet having a vent door, a differential air outlet having a differential door, and a foot air outlet having a foot door have been provided in an air conditioning case (Patent Document 1 and the like). ..

As this type of vehicle air conditioner, the air conditioner air in the air conditioner case is blown to the feet side of the front seat occupants at the front foot opening, and the air conditioner air is blown to the feet side of the rear seat occupants. Some have a seat foot opening.

As a result, the air-conditioning air can be blown not only to the feet of the front seat occupants but also to the feet of the rear seat occupants.

Japanese Unexamined Patent Publication No. 2003-154836

However, in the air conditioner according to the prior art, since a pair of front seat foot openings are formed on the side surface of the air conditioner case, the air volume for the rear seats is sufficient when the rear seat foot openings are formed. When trying to earn money, there was the inconvenience that the dimensions in the front-rear direction of the vehicle became large.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle air conditioner capable of securing a sufficient air volume for the rear seats without increasing the dimensions in the front-rear direction of the vehicle. To do.

In order to achieve the above object, the vehicle air conditioner according to the present invention has a front seat foot opening formed on both side surfaces of a hollow air conditioner having an air passage through which air for air conditioning flows, and both fronts thereof. A front seat foot passage composed of a rear seat foot opening formed between the seat foot openings, a front seat foot duct communicating with the front seat foot opening, and the rear seat foot opening. In a vehicle air conditioner including a rear seat foot passage composed of a rear seat foot duct communicating with the air conditioner, the air conditioner case includes a chamber communicating with the front seat foot passage and the rear seat foot passage. The chamber is formed and has a first area communicating with each front seat foot passage and a second area communicating with the left and right sides of the first area, and a downstream side of the first area and each of the first areas. It is characterized by providing an auxiliary passage that communicates with the downstream side of the two areas.

It is a perspective view which shows the structural example of the instrument panel which arranged the air conditioner for a vehicle which concerns on embodiment. It is a side sectional view which shows the structural example of the air conditioner for vehicles which concerns on embodiment. It is sectional drawing which shows the chamber and the like provided in the vehicle air conditioner which concerns on embodiment. It is sectional drawing which shows the ventilation state of the air conditioner for a vehicle which concerns on embodiment. It is an upper sectional view which shows the ventilation state of the vehicle air conditioner which concerns on embodiment. It is a schematic plan view which shows the whole structure of the vehicle air conditioner which concerns on embodiment. It is sectional drawing which shows the ventilation state of the conventional air conditioner for a vehicle. It is an upper sectional view which shows the ventilation state of the conventional air conditioner for a vehicle. It is a front side perspective view which shows the structural example of the foot door applied to the vehicle air conditioner which concerns on embodiment. It is a back side perspective view which shows the structural example of the foot door applied to the vehicle air conditioner which concerns on embodiment.

Hereinafter, embodiments as an example of the present invention will be described in detail with reference to the drawings. Here, in the attached drawings, the same members are designated by the same reference numerals, and duplicate description is omitted. Since the description here is the best mode in which the present invention is carried out, the present invention is not limited to this mode.

[Rough configuration of vehicle air conditioner according to the embodiment]
The configuration and the like of the vehicle air conditioner 1 according to the embodiment will be described with reference to FIGS. 1 and 2.

First, with reference to FIG. 1, the instrument panel 200 on which the vehicle air conditioner 1 according to the present embodiment is arranged will be briefly described.

The vehicle air conditioner 1 of the present embodiment is arranged so as to be located substantially in the center of the inside of the instrument panel 200 located in front of the vehicle interior (not shown in FIG. 1).

Then, the conditioned air generated by the vehicle air conditioner 1 passes through a duct (not shown), the differential outlet 201 formed on the upper surface side of the instrument panel 200, the center vent outlet 202 formed on the front surface side, and the center vent outlet 202. Air-conditioning winds W20, W21 (W21a, W21b), W22 (W22a, W22b), and W23 (W23a, W23b) are blown into the vehicle from the side vent outlets 203 and 204 and the front foot outlets (not shown), respectively.

Further, in order to prevent fogging of the side windows, so-called side vent leakage winds W30 (W30a, W30b) are constantly blown out through the side vent air distribution ducts connected to the side vent outlets 203 and 204 in the vehicle interior to prevent fogging. The outlets 205a and 205b are provided in the vicinity of the side vent outlets 203 and 204.

Further, although not shown, the air-conditioning air is blown into the vehicle from the rear seat foot outlet connected via a duct extending to the rear seat side.

(Configuration example of vehicle air conditioner)
Next, a configuration example of the vehicle air conditioner 1 according to the present embodiment will be described with reference to FIG.

As shown in FIG. 2, the vehicle air conditioner 1 is installed in a hollow air conditioner case 4 having an air passage 3 through which air for air conditioning W10 flows in the upper right corner of the drawing, and air inside the air conditioner case 4. A cooling heat exchanger (evaporator) 5 that cools and dehumidifies the air conditioning air W10 flowing through the passage 3, and a heating heat exchanger (heater core) 7 that is installed inside the air conditioning case 4 and heats the air conditioning air W10. And the mix door 100 that adjusts the air volume ratio between the cold air W9 from the cooling heat exchanger 5 and the hot air W8 heated by the heating heat exchanger 7, and the hot air heated by the heating heat exchanger 7. A mixing chamber 13 for mixing the cold air W9 from the cooling heat exchanger 5 and the hot air W8 from the hot air outlet 12 is provided at a position facing the hot air outlet 12 which is the outlet of the W8.

Here, the cooling heat exchanger 5 is provided with a filter 50 on the windward side (upstream side).

Further, the heating heat exchanger 7 is installed on the leeward side (downstream side) of the cooling heat exchanger 5.

A PTC (Positive Temperature Coefficient) heater 51 is provided on the downstream side of the heating heat exchanger 7.

Further, on the upstream side of the mixing chamber 13, a foot opening F for blowing air conditioning air to the feet of the occupant and a foot door 18 for opening and closing the foot opening F are provided.

The foot door 18 is rotatably supported in the D1 direction by a rotation shaft 185 on the upper end side.

The detailed configuration of the foot door 18 will be described later with reference to FIGS. 9 and 10.

Further, on the upstream side of the mixing chamber 13, a vent opening 21 for blowing out air conditioning air W12 toward the chest of the occupant and a differential opening for blowing out air conditioning air W11 toward the front window glass to prevent window fogging. An opening such as a portion 22 is formed.

In the vicinity of the vent opening 21 and the differential opening 22, a mode door 23 for opening and closing these is pivotally supported by a rotating shaft 23a so as to be rotatable in the D2 direction.

Here, the air conditioning air W8 to W12 and the like are generated from the outside air W1 introduced into the air conditioning case 4 by the fan 25 provided on the entrance side of the air conditioning case 4.

The fan 25 has a fan main body 25a and a fan case 25b, and is provided integrally with the vehicle air conditioner 1.

A part of the air flow is branched into the hot air passage 27 side and the cold air W7 side by the mix door 100, and then rejoined in the mixing chamber 13.

The heating heat exchanger 7 and the PTC heater 51 are provided in the warm air passage 27.

As shown in FIG. 2, the mix door 100 has a two-fold structure in which two door members 100a and 100b are swingably connected by a hinge portion 100c.

The mixed door 100 is rotated around a rotation shaft 120 included in the upper door member 100b as a fulcrum, and the lower door member 100a is configured to move in the D3 direction along the rail member 250 in conjunction with this movement. Has been done.

The cooling heat exchanger 5 is composed of an evaporator (evaporator) that takes away latent heat of evaporation from the air conditioning air (outside air) W1 by evaporating the refrigerant inside.

The heating heat exchanger 7 is composed of a heater (heater core) that heats the air conditioning air W2 by utilizing the heat of the engine coolant used in the engine cooling system.

In the figure, reference numeral 450 is a refrigerant input / output unit for the cooling heat exchanger 5.

(Configuration of vehicle air conditioner chamber, etc.)
The configuration of the chamber C and the like included in the vehicle air conditioner 1 according to the present embodiment will be described with reference to FIGS. 3 to 6.

Here, FIG. 3 is a sectional perspective view showing a chamber C and the like included in the vehicle air conditioner 1 according to the embodiment, FIG. 4 is a sectional view showing a ventilation state of the vehicle air conditioner 1, and FIG. 5 is a sectional view thereof. The upper sectional view and FIG. 6 are schematic plan views showing the overall configuration of the vehicle air conditioner 1.

As shown in FIG. 3, on the front side (vehicle passenger compartment side) of the vehicle air conditioner 1, front seat foot openings FF1 and FF2 formed on both side surfaces of the air conditioner case 4 and for both front seats. Front seat foot aisle consisting of rear seat foot openings RF1 and RF2 formed between foot openings FF1 and FF2, and front seat foot ducts 501A and 501B communicating with front seat foot openings FF1 and FF2. A rear seat foot aisle 700 (see FIG. 4) including 500A and 500B and a rear seat foot duct 701 communicating with the rear seat foot openings RF1 and RF2 is provided.

Further, the air conditioning case 4 is formed with a chamber C communicating with the front seat foot aisles 500A and 500B and the rear seat foot aisle 700.

The chamber C has a first area A1 communicating with the front seat foot aisles 500A and 500B, and a second area A2 (A2a, A2b) communicating with the left and right sides of the first area A1.

Further, the chamber C includes rear seat auxiliary passages 600a and 600b communicating with the downstream side of the first area A1 and the downstream side of the second areas A2a and A2b, respectively.

In the configuration example of the chamber C shown in FIG. 3, the first area A1 is composed of the narrowest portion 800 in the chamber C extending in the vehicle width direction.

Further, each of the second areas A2a and A2b is composed of large diameter portions 801a and 801b having a diameter larger than that of the narrowest portion 800.

Further, the front seat foot openings FF1 and FF2 are opened in the vehicle width direction.

According to the vehicle air conditioner 1 according to the first aspect, in the chamber C communicating with the front seat foot aisles 500A and 500B and the rear seat foot aisle 700, the downstream side of the first area A1 and each second area A2a Since the rear seat auxiliary aisles 600a and 600b that communicate with the downstream side of A2b are provided, the cross section of the rear seat foot aisle 700 can be obtained without increasing the size in the front-rear direction of the vehicle, and the rear seats can be obtained. Sufficient air volume can be secured.

Here, the ventilation state in the chamber C and the like of the vehicle air conditioner 1 will be described with reference to FIGS. 4 to 6.

As shown in FIGS. 4 to 6, air-conditioning winds W50a and W50b flow into the front seat foot aisles 500A and 500B from the left and right of the chamber C to the side vent outlets 203 and 204 shown in FIG. The air-conditioning winds W100a and W100b are supplied and are output to the feet of the front seat occupants.

On the other hand, the air-conditioning winds W51a and W51b flow into the rear-seat foot aisle 700 from the rear-seat foot openings RF1 and RF2, and the air-conditioning winds W50a and W50b flow through the rear-seat auxiliary passages 600a and 600b. A part of it flows in as air conditioning winds W52a and W52b.

In FIG. 4, the portion indicated by reference numerals 510a and 510b is a wall portion protruding inward on the upper end side of the rear seat foot duct 701.

Then, as shown in FIGS. 4 and 6, the air-conditioning winds W51a, W51b and W52a, W52b are guided to the rear seat side via the ducts 702A and 702B extending to the rear side of the vehicle, and the rear seat foot. The air-conditioning winds 101a and 101b are output from the air outlet to the feet of the rear seat occupants.

Here, with reference to FIGS. 7 and 8, the ventilation state in the chamber C'and the like of the conventional vehicle air conditioner 900 will be briefly described.

Note that the same configurations as those of the present embodiment shown in FIGS. 4 and 5 are designated by the same reference numerals and duplicated description will be omitted.

In the chamber C'of the conventional vehicle air conditioner 900, wall portions 901a and 901b extending from the rear seat foot duct 701 are formed below the left and right ends of the chamber C'.

Therefore, the air-conditioning winds W50a and W50b and the air-conditioning winds W200a and W200b flowing along the wall portions 901a and 901b flow into the front seat foot aisles 500A and 500B from the left and right of the chamber C', and the sides shown in FIG. The air-conditioning winds W100a and W100b are supplied to the vent outlets 203 and 204, and are output to the feet of the front seat occupants.

On the other hand, since the air-conditioning winds W51a and W51b only flow into the rear-seat foot aisle 700 from the rear-seat foot opening, the rear-seat occupants use the air-conditioning airflows 201a and 201b from the rear-seat foot outlet. There is a drawback that the air volume output to the feet is less than that of the vehicle air conditioner 1 according to the present embodiment.

In such a conventional air conditioner 900 for vehicles, if it is intended to increase the air volume for the rear seats with the same width dimension, it is necessary to increase the size of the chamber C'in the vehicle front-rear direction, and the dimensions of the entire device in the vehicle front-rear direction. There is an inconvenience that it is not possible to meet the demand for miniaturization.

On the other hand, according to the vehicle air conditioner 1 according to the present embodiment, as described above, a part of the air conditioner winds W50a and W50b is passed through the rear seat auxiliary passages 600a and 600b and the air conditioner winds W52a and W52b. Therefore, it is possible to secure a sufficient air volume for the rear seats without increasing the size in the front-rear direction of the vehicle. This makes it possible to meet the demand for miniaturization in the front-rear direction of the vehicle.

Further, in the vehicle air conditioner 1 according to the present embodiment, since the front seat foot openings FF1 and FF2 are opened in the vehicle width direction, it is possible to increase the cross section of the aisle, which is more sufficient. A large amount of air can be secured.

(Example of foot door configuration for vehicle air conditioner)
A configuration example of the foot door 18 applied to the vehicle air conditioner 1 according to the present embodiment will be described with reference to FIGS. 2, 9 and 10.

Here, FIG. 9 is a front perspective view showing a configuration example of the foot door 18 applied to the vehicle air conditioner 1 according to the embodiment, and FIG. 10 is a back perspective view.

As shown in FIG. 2, in the air conditioning case 4, a foot door 18 for opening and closing the foot openings FF1 and FF2 for the front seats and the foot openings F communicating with the foot openings RF1 and RF2 for the rear seats is provided on the rotating shaft 185. The left and right tip portions 185a of the above are supported by bearing portions (not shown) and are rotatably provided.

The foot door 18 is made of, for example, a heat-resistant resin.

Both ends 181a and 181b of the door body 180 of the foot door 18 in the vehicle width direction are bent to the opposite side of the foot opening F.

As a result, the resistance of the air flowing in the left-right direction of the foot door 18 can be reduced, and the conditioned air can be smoothly circulated in the air-conditioning case 4.

Further, as shown in FIG. 10, in the region formed by the upper root portions 182a and 182b of the foot door 18 both end portions 181a and 181b and the both end portions 185a and 185b of the rotating shaft 185, the air conditioning wind shielding portion is formed. 183a and 183b are formed.

As a result, when the foot door 18 is fully opened (in the state shown in FIG. 2), the shielding portions 183a and 183b can prevent the air-conditioning air from blowing upward, and the airtightness can be improved.

As shown in FIG. 9, a large number of ribs 186 for reinforcing the door body 180 are erected on the front side of the foot door 18.

Further, a protrusion 187 for improving the mixing property of hot air and cold air is formed at substantially the center of the door body 180.

Although the invention made by the present inventor has been specifically described above based on the embodiments, the embodiments disclosed in the present specification are exemplary in all respects and are not limited to the disclosed technology. Should be considered not. That is, the technical scope of the present invention is not limitedly interpreted based on the description in the above-described embodiment, but should be interpreted according to the description of the claims, and the scope of claims. Includes all modifications within the scope of the claims and claims as well as the techniques described in.

1 ... Vehicle air conditioner 4 ... Air conditioner case 5 ... Cooling heat exchanger (evaporator)
7 ... Heat exchanger for heating (heater core)
18 ... Foot door 50 ... Filter 100 ... Mixed door 180 ... Door body 181a, 181 ... Ends 182a, 182b ... Upper roots 183a, 183b ... Shielding 185 ... Rotating shaft 186 ... Ribs 187 ... Protrusions 500A, 500B ... Front Seat foot aisle 501A, 501B ... Front seat foot duct 600a, 600b ... Rear seat auxiliary aisle 700 ... Rear seat foot aisle 701 ... Rear seat foot duct 702A, 702B ... Duct 800 ... Narrowest part 801a, 802b ... Large diameter part A1 ... 1st area A2a, A2b ... 2nd area C ... Chamber FF1, FF2 ... Front seat foot opening RF1, RF2 ... Rear seat foot opening

Claims (4)

Front seat foot openings (FF1, FF2) formed on both sides of a hollow air-conditioning case (4) having an air passage through which air-conditioning air flows, and
The rear seat foot openings (RF1, RF2) formed between the two front seat foot openings,
A front seat foot aisle (500A, 500B) composed of front seat foot ducts (501A, 501B) communicating with the front seat foot opening, and a front seat foot aisle (500A, 500B).
A rear seat foot aisle (700) composed of a rear seat foot duct (701) communicating with the rear seat foot opening, and a rear seat foot aisle (700).
In the vehicle air conditioner (1) equipped with
The air-conditioning case is formed with a chamber (C) communicating with the front seat foot aisle and the rear seat foot aisle .
The chamber has a first area (A1) communicating with each front seat foot aisle and a second area (A2) communicating with the left and right sides of the first area, and is connected to a downstream side of the first area. Auxiliary passages for rear seats (600a, 600b) communicating with the downstream side of each of the second areas are provided.
The first area is composed of a narrowest portion (800) extending in the vehicle width direction in the chamber.
A vehicle air conditioner, wherein each of the second areas is composed of large diameter portions (801a, 801b) having a diameter larger than that of the narrowest portion. The vehicle air conditioner according to claim 1, wherein each front seat foot opening is opened in the vehicle width direction. In the air-conditioning case, a foot door (18) for opening and closing the foot opening (F) communicating with the front seat foot opening and the rear seat foot opening is rotatably provided by a rotating shaft (185). Be,
The vehicle air conditioner according to claim 1 or 2, wherein both ends (181a, 181b) of the foot door in the vehicle width direction are bent to the opposite side of the foot opening. An air conditioner air shielding portion (183a, 183b) is formed in a region formed by the upper root portions (182a, 182b) of the both end portions of the foot door and the end portions of the rotating shaft. The vehicle air conditioner according to claim 3.

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