JPH03143724A - Air conditioning device for vehicle - Google Patents

Abstract

PURPOSE:To enable prompt air conditioning with air sufficiently blown diago nally in the lower direction for a horizontal surface by forming a blow port, opened to the diagonal lower of an upper diffuser, further providing a protrusive streak in the upper diffuser spread to the blow port. CONSTITUTION:Air is sucked from a blow port 3 into both upper and lower cases further with a heat exchange performed in an evaporator 15, thereafter the air, which crosses through the inside of a cylindrical impeller 5, is blown out from a blow port 4. One of air which passes through the cylindrical impeller 5, that is, air in the vicinity of an upper diffuser 7 is partly blown (arrow a) in a direction of the front surface of a device main unit without moving along the guide surface of a protrusive streak 8. On the other hand, air passing in the vicinity of the upper diffuser 7 is exfoliated from a curved surface of the upper diffuser by the protrusive streak 8 and deflected (arrows b, c) diagonally in the downward direction. Air, which passes in the vicinity of the center of the impeller from a lower diffuser 11 of the blow port 4, is blown (arrows d, e) diagonally in the downward direction being influenced by the above described directional air (b, c).

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly to a vehicle air conditioner installed under the ceiling of a vehicle.

BACKGROUND OF THE INVENTION Conventionally, this type of vehicle air conditioner has only had an air outlet that is open at the front of the device (for example, see Japanese Utility Model Application Publication No. 63-22213).

Problems to be Solved by the Invention However, in the conventional vehicle air conditioner as described above, air can be blown in the front direction of the main unit, and the direction of the blade attached to the air outlet cannot be changed. Although it was possible to change the direction of air blowing to the left and right, it was not possible to blow air diagonally downward from the device.

The present invention was made to solve the above problems,
The purpose is to blow air diagonally downward from the main unit with sufficient air volume.

Means for Solving the Problems In order to solve the above problems, the present invention includes an air outlet opening diagonally downward, an upper diffuser leading to the air outlet, a protrusion provided on the upper diffuser, and the air outlet. It has a structure in which upper and lower deflection blades are provided on the inner side thereof, and are rotatably provided around the horizontal direction.

According to the present invention, in a wind circuit formed by a stabilizer having a rear guider, an upper diffuser, and a lower diffuser, the upper diffuser sent from the windward side of the device is Nearby wind is deflected along this plane, and the air blowing angle can be adjusted using the upper and lower deflection blades.

EXAMPLE An example of the present invention will be described below. FIG. 1 and FIG. 2 are a front view and a cross-sectional view showing one embodiment of the present invention,
In the figure, 1 and 2 are an upper case and a lower case, respectively, which constitute the main unit of the device; 3 is an inlet for sucking air inside the vehicle; 4 is an outlet for blowing out the air sucked in from the inlet 3; is a cylindrical impeller, 6 is a curved rear guider located at the upper part of the leeward side of the cylindrical impeller, 7 is an upper diffuser that is continuous with the rear guide 6 and reaches the air outlet 2, and 8 is provided on the upper diffuser 7. , is a protrusion having a guide surface 9 falling at an acute angle from the upper diffuser, and the cross section of this protrusion has a substantially right triangular shape with the guide surface 9 as the hypotenuse. Reference numeral 10 denotes a stabilizer that forms a wind circuit with the rear guider 6 and the upper diffuser 7, and includes a lower diffuser 11 rising from the lower edge 13 of the air outlet, a ridge 12 continuous with the lower diffuser 11, and a stabilizer 10 extending from the lower edge 13 of the air outlet. A concave curved surface 14 provided so as to gradually approach the cylindrical impeller 5 toward the leeward side.
It is composed of. Reference numeral 15 denotes an evaporator for exchanging heat of the air sucked in from the suction port 3, 16 a blade attached to the air outlet grille, and 17 a vertical deflection blade attached so as to be rotatable in the horizontal direction.

Next, the flow of air inside the device will be explained using FIG. 3. First, the air sucked in through the suction port 3 is transferred to the evaporator 15.
The heat exchanged air flows through the cylindrical impeller 5 and then is blown out from the outlet 4.

At this time, part of the wind that has passed through the cylindrical impeller 5 near the upper diffuser 7 is transferred to the guide surface 11 of the protrusion 8.
Although the air is blown toward the front of the device main body without following the upper diffuser 7 (arrow a), almost all the air passing near the upper diffuser 7 is separated from the curved surface of the upper diffuser 7 by the protrusion 8 and deflected diagonally downward. (Arrows S and C shown in Figure 10). The air flowing from the lower diffuser 1 of the air outlet 4 through the center of the blade 16 is blown out diagonally downward due to the influence of the wind blown diagonally downward as indicated by arrows S and C.

Note that the blowout angle of the wind blown out from the blowout port 2 can be adjusted by adjusting the angle of the upper and lower deflection blades 17 with respect to the horizontal plane. In other words, by making the upper and lower deflection blades at a sufficiently large angle with respect to the horizontal plane (approximately 50° to 55° to the horizontal plane), it is possible to blow air more downwardly, and by making the upper and lower deflection blades horizontal, it is possible to blow more air in the horizontal direction. It is also possible to blow air to

Next, an experiment was conducted regarding the relationship between the shape and position of the protrusion 8 and the wind blowing angle, and the results will be described below.

Figures 4(, I) to 4(C) are cross-sectional views showing the shape of the protrusions used in this experiment.
It has a shape in which the sides between the smallest angle and the right angle are bent to match the curved surface of the upper diffuser 7. In FIG. 4, the three vertices of the cross section of the protrusion 8 are A, B, and C, the length between A and 8 is h, and the length between A and C is l.

Here, h is hdL+ h b, h C in Figure 4 (a) to Figure 4 (C), respectively, and r is la, respectively.
,, 1b, lo. In Fig. 4(a), im -9m1M, ha = 5mrn, and in Fig. 4 and b), lb = 9 mm, h.
6 = 3 mm, l in Figure 4 (C),
= 9 mm, h = 3 mm. Then, as shown in FIG. 5(a) to FIG. 5ζg), by changing the distance t between the flat straight line from the upper edge of the air outlet 4 to sides A and H of the cross section of the protrusion 8 and point B, the air outlet The change in angle was measured.

In addition, FIGS. 5(a) to 5(e) use a protrusion having the shape of FIG. 4(a), and FIG. 5(f) uses a protrusion having the shape of FIG. 4(b). In Fig. 5 (g), the protrusions of Fig. 4 (C, l) are used. In Fig. 5 (a) to Fig. 5 (e), the distance t is ta = 5 + + + m, tb = 10 mn +
,te=15n++nja=20m+e,te=
25 mm, t+ = 15 matg = 15 mm, and the blowing angle with respect to the horizontal plane is shown in the table. The shapes of the projections 8 are shown in the table as Nα1, Nα2, and Nα3, respectively, in FIGS. 4(a) to 4(a).

In addition, in this experiment, as shown in FIG. axis E
The distance between the reference line C drawn in the horizontal direction and the peak 12 of the stabilizer 10 is b1 The distance from the axis E of the cylindrical impeller 5 to the peak 12 of the stabilizer 10 is C1 The rising angle of the lower diffuser 11 is α , the curved surface of the rear guider 6 is R1,
The curved surface of the upper diffuser 7 is R2, and a=59.
6mm, b=8.5+nmC=44.5mm,
α=50°, R+ =40R, =80. And so. Also,
The cylindrical impeller 5 has an outer diameter of 60.0 mm and an inner diameter of 44.0 mm.
I used one with 31 blades.

It was found that a sufficient blowout angle could be obtained by setting the position to (see margin below). Moreover, if it is desired to blow air in the horizontal direction, the upper and lower deflection blades 16 may be set horizontally.

Incidentally, FIG. 7 shows an example of the case where the vehicle air conditioner of this embodiment is attached to the ceiling of the vehicle interior. According to the figure, the device is installed in the center of the ceiling of the vehicle interior so that the air outlet 4 faces the rear seats.

According to this embodiment, by setting the vertical deflection blades 16 in the vehicle interior to the solid line state and blowing air obliquely downward, the vehicle interior can be air-conditioned quickly.

Also, when the inside of the vehicle reaches a comfortable temperature, the upper and lower deflection blades 16
By making the seat horizontal, air can be blown in a horizontal direction, so the person sitting on the seat does not feel uncomfortable when the air hits the person directly. Note that the protrusion 8 is the fourth
It is not limited to the approximately right triangular shape shown in FIGS. 4(a) to 4(d).
The guide surface 9-5 may have a substantially triangular shape with two acute angles and one obtuse angle, or may have a curved guide surface 9-5 as shown in FIG. 4(e).

Effects of the Invention As can be seen from the above explanation, by providing an upper diffuser with an air outlet opening diagonally downward and a protrusion on the upper diffuser connected to the upper edge of this air outlet, sufficient air can be blown diagonally downward with respect to the horizontal plane. This makes it possible to air-condition the vehicle interior quickly. In addition, once the inside of the vehicle reaches a comfortable temperature, the upper and lower eccentric vanes can be set horizontally to blow air in a horizontal direction, so passengers sitting in the seats will not feel uncomfortable due to the wind directly hitting them. .

[Brief explanation of the drawing]

FIG. 1 is a front view showing a vehicle air conditioner according to an embodiment of the present invention, FIGS. 2 and 3 are sectional views of the same device, and FIG.
The figure is a cross-sectional view of the protrusion, FIG. FIG. 3 is a perspective view showing a state in which the vehicle is attached to the ceiling of a vehicle interior. 1 ・ 4 ・ 6 ・ Lapse/upper case 2... Lower case/air outlet 5... Cylindrical impeller/rear guider 7... Upper date 8... Projection
10... Stabilizer 17... Vertical deflection blade.

Claims (1)

[Claims] A case having an inlet on one side facing each other and an outlet opening diagonally downward on the other side, an evaporator provided in the case, and a cylindrical shape provided on the leeward side of the evaporator. an impeller, a curved rear guider inside the case on the leeward side of the cylindrical impeller, an upper diffuser that is continuous with the rear guider and reaches the air outlet, and a protrusion provided on the upper diffuser; A vertical deflection blade is provided inside the air outlet so as to be rotatable about the horizontal direction, and is located inside the case below the cylindrical impeller on the leeward side of a vertical plane passing through the axis of the cylindrical impeller. and a lower diffuser that rises from the lower edge of the air outlet and is continuous with the peak in a smooth curve.