JPS6236023Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a blowout grill for blowing out cold air from a cooling unit disposed on the shoulder of the ceiling of a bus in a bus cooling system.

In recent bus cooling systems, as shown in FIGS. 1 and 2, a plurality of cooling units 1 are fixed to shoulders 3a on both sides of a ceiling 3 and are alternately distributed therein. A blower 5 and an evaporator 6 are housed in a case 4, and a duct 8 is connected to the downstream side of the evaporator 6.

The area around the cooling unit 1 and the duct 8 is
It is covered with cover 9. An inlet 10 is formed at one end of the cover 9, an outlet 11 is formed at the other end, and an outlet grill 12 is provided at the outlet 11.

As a result, the air inside the vehicle is sucked through the suction port 10 by the drive of the blower 5, and the air is sucked into the cooling unit 1.
The air is cooled down and then blown out from the blowing grill 12.

However, although the configuration is such that the cold air is guided to a position facing the blow-off grille 12 (to the seat on the opposite side) and also to a lower part of the cooling unit 1, compared to the position facing the cooling unit 1,
The amount of air blown below was relatively small, and the temperature in this area was higher than in other areas, causing uneven air conditioning.

Therefore, in order to eliminate uneven air conditioning, the object of this invention is to provide a blow-off grill that can also guide cold air directly below the cooling unit. The gist of this invention is that, in the blow-off grill that blows out cold air from a cooling unit placed on the shoulder of the ceiling of a bus, a plurality of curved wind direction changing plates are arranged in the vertical direction within the mounting frame. The cooling device for a bus is provided with a large degree of downward curvature of the outflow side of the wind direction change plate provided at the lowest position, and a protruding piece protruding into the flow path below on the lower piece constituting the mounting frame. It is located on the blowout grill.

Therefore, the cold air flowing in the flow path above the lowest wind direction changing plate is blown out over a large range in the direction of the opposite position by the curved wind direction changing plate, and the cold air flowing in the flow path above the lowest wind direction changing plate is blown out over a large range in the direction of the opposite position. The cold air flowing through the flow path is changed to a steep angle by the protruding piece projecting into the flow path below and is blown out directly below the cooling unit, thereby achieving the above-mentioned object.

Examples of this invention will be described below with reference to the drawings.

In FIG. 3, the cooling system consists of two cooling units 1 that are connected to the ceiling 3 of the bus 2, at the shoulder 3.
They are arranged alternately on both sides of a.

As shown in detail in FIG. 4, the cooling unit 1 includes a blower 5 and an evaporator 6 in a case 4.
A duct 8 is connected to the downstream opening 7 of the evaporator 6.

The cover 9 covers the cooling unit 1 and the duct 8, and has an inlet 10 formed at one end. Further, an air outlet 11 is formed at the other end, and an air outlet grill 12, which is a feature of this invention, is fitted into the air outlet 11.

As shown in detail in FIGS. 5 and 6, the blow-off grille 12 has a mounting frame 13 having a rectangular shape that is elongated in the horizontal direction, and an insertion portion 14 is formed on the rear side of the mounting frame 13. The insertion portion 14 is inserted into the cover 9.
A screw (not shown) is inserted into a screw insertion hole 15 formed on the side of the frame 13 and attached to the cover 9 . Further, the insertion portion 14 is in contact with the tip opening of the duct 8 via a sealing member 16, and the duct 8 and the blowing grill 12 are connected to each other.
Airtightness is maintained between the two.

Inside the mounting frame 13, a plurality of wind direction changing plates 17 are provided in the vertical direction, and a reinforcing plate 18 is provided to cross the wind direction changing plates 17. In the example, 3
A sheet is provided.

The outflow side of the wind direction changing plate 17 is curved downward. An upper flow path 20 and a lower flow path 21 with the provided wind direction changing plate 17 as a boundary.
is made up of.

In this embodiment, the wind direction changing plate 17 provided at the lowest position extends in a curved manner until its outflow side end 17a faces vertically downward, and
The inflow side end is located a little closer to the outflow side than the inflow side ends of the other wind direction changing plates 17.

The lower piece 13a constituting the mounting frame 13 includes:
A protruding piece 19 is provided that protrudes into the lower flow path 21, and the cold air passing through the lower flow path 21 is
The flow velocity increases when passing through the protruding piece 19 because it is obstructed by the protruding piece 19, but once the protruding piece 19 passes, the pressure behind the protruding piece 19 is low, so the flow is changed to a steep angle.

In the above configuration, when the blower 5 is driven, air inside the vehicle compartment is sucked into the cover 9 through the suction port 10 and further into the case 4 of the cooling unit 1. The air sucked into the case 4 is cooled by an evaporator 6 and guided to an outlet 11 via a duct 8.

The cold air passing through the flow path 20 above the blow-off grille 12 is blown out by the curved wind direction changing plate 17 in the direction of the opposing position (toward the seat on the opposite side).
In addition, the cold air passing through the lower flow path 21 is obstructed by the protruding piece 19 and increases the flow velocity when passing through, and also changes the wind direction upward. is changed to a steep angle, and the air is blown directly downward along the lowermost wind direction changing plate 17.

As described above, according to this invention, since the predetermined wind direction changing plate and the protruding piece protruding into the lower flow path are provided, the cold air is also guided directly below the cooling unit, and is distributed throughout the vehicle interior. Cold air is blown out,
Therefore, there is an effect that uneven air conditioning does not occur.

[Brief explanation of the drawing]

Figures 1 and 2 show conventional embodiments;
The figure is a schematic diagram of a bus cooling system, Figure 2 is a sectional view taken along line A-A in Figure 1, Figures 3 to 6 show examples of this invention, and Figure 3 is a diagram of a bus cooling system. 4 is a sectional view of the cooling unit, FIG. 5 is a front view of the outlet grille, and FIG. 6 is a sectional view taken along line AA in FIG. 5. 1...Cooling unit, 2...Bath, 3...
...Ceiling, 3a...Shoulder, 12...Blowout grill,
13...Mounting frame, 13a...Lower piece, 17...Wind direction changing plate, 19...Protruding piece, 21...Lower flow path.

Claims (1)

[Scope of utility model registration request] In the blowout grill that blows out cold air from the cooling unit placed on the shoulder of the ceiling of the bus, multiple curved wind direction changing plates are installed vertically within the mounting frame, and the lowest wind direction changing plate is A blow-out grill for a bus cooling system, characterized in that the outflow side has a large degree of downward curvature, and a lower piece constituting the mounting frame is provided with a protruding piece that protrudes into a lower flow path.