JPS5822809Y2 - Bus cooling system - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a cooling device for buses.

In recent years, air conditioners have been installed on short-distance buses other than sightseeing buses and long-distance buses.

The evaporator and blower of the cooling system are increasingly installed on the rear Q ceiling of the bus. In these systems, the evaporator is placed perpendicular to the longitudinal direction of the vehicle, and the blower is installed behind it. Indoor air passes through an evaporator, undergoes heat exchange, becomes cold air, and is blown into the vehicle interior from a blow-off duct via a blower.

Since the evaporator is large, it requires a space to house it, which requires the roof to protrude significantly outside the vehicle or into the interior of the vehicle, sacrificing head clearance.

This idea uses two evaporators to install a cooling unit consisting of an evaporator, a blower, etc. on the ceiling, and installs each evaporator in the longitudinal direction on the shoulder side of the ceiling if possible, and also installs a blower to send air to the evaporator. Even if the system is installed on the ceiling of the vehicle by installing them on the center side of the bus, the protrusion of the roof can be minimized and the head clearance of the head can be maintained without sacrificing too much (the center aisle can be easily secured). This is what I did.

Next, an embodiment of this invention will be described with reference to the drawings.

1 and 2, an embodiment is shown in which the cooling unit is installed on the rear ceiling of the bus.

There are cold air blowing ducts 2 on both shoulders of the ceiling 1a of the bus body 1.
are provided along the longitudinal direction of the bus body 1.

The blow-off duct 2 is provided with a plurality of blow-off ports 4, and cold air is blown into the vehicle interior from the blow-off ports 4.

Evaporator 5 that constitutes a so-called cooling unit
The blower 6 and the like are provided in a storage section 3 formed on the rear ceiling of the bus body 1 so that the ceiling projects upward.

As shown by dotted lines, the evaporators 5 are located inside the evaporator case 7, and are provided along the longitudinal direction on each shoulder side of the ceiling 1a together with the case 7.

The blower 6 is for the purpose of supplying the air inside the vehicle to the evaporator 5, and is provided on the center side of the bus relative to the evaporator 5, and two blowers 6 are used for each evaporator 5. Both blowers 6 are rotated by a motor 8 provided between the two blowers 6 .

When the blower rotates 60 times, the air inside the vehicle is sucked through the suction port 6a of the blower 6 and sent to the evaporator 5, where the air is heat exchanged and becomes cold air. and is blown out from the air outlet 4 into the vehicle interior.

A cover 9 that covers the evaporator 5, blower 6, etc. is bent appropriately to follow the shape of the lower surface of the evaporator case 7, blower 6, motor 8, etc., and is generally directed downward, that is, in a direction that reduces head clearance. However, the amount of reduction is small, and the center part is recessed upwards and has almost the same head clearance as a part without a cooling unit.

This is because the size of the evaporator 5 has been reduced because it is divided into two parts, and because the evaporator 5 has been installed along the longitudinal direction of the vehicle body 1 as close to the shoulder as possible, the amount of reduction as a whole can be reduced. This is because there are no components constituting the cooling unit, especially in the center, which eliminates the reduction in the center.

In the drawing, 10 is an engine for running the bus, and the engine 10 drives two compressors 11.

12 is a condenser that constitutes the cooling cycle, and 13 is a drain pipe that drains condensed water that collects below the evaporator case 7. Since the wind blows in the direction that pushes out the condensed water, drainage is good.

In Fig. 3, as mentioned above, this device can be mounted in the center because the cooling unit consisting of the evaporator 5, blower 6, etc. does not protrude too much to the bottom side and does not reduce the head clearance. An example is shown.

That is, the evaporator 5 is disposed inside the evaporator case 7 and is disposed along the longitudinal direction on both shoulders of the bus body 10, and the blower 6 is disposed on the center side of the bus of the evaporator 5.

The outlet side of the evaporator 5 is connected to the blow-off duct 2, and the air inside the vehicle is sucked in by 60 revolutions of the blower, and the air is heat-exchanged in the evaporator 5 and becomes cold air. It is blown into the room.

In this embodiment as well, a sufficient center passage can be secured without significantly reducing the head clearance.

Incidentally, in this embodiment, the same parts as those in the previous embodiment are given the same numbers and the explanation is omitted.

As described above, according to this invention, the evaporators are installed along the length of the ceiling as close to the shoulders as possible, and the blowers are installed closer to the center of the bus. Because it can be made smaller, there is less downward protrusion, especially near the center of the bus, because parts that make up the cooling unit can be eliminated, so the downward protrusion in the center can be minimized. , it is possible to obtain sufficient head clearance.

In addition, since the condensed water is discharged in the direction of being pushed out by wind pressure, it has the effect of good drainage.

[Brief explanation of drawings]

The figures show an embodiment of this invention; Figure 1 is a perspective view;
FIG. 2 is an enlarged sectional view of the main part, and FIG. 3 is a perspective view showing another embodiment of this invention. 1...Bus body, 1a...Ceiling, 2.
...Blowout duct, 5...Evaporator,
6...Blower.

Claims (1)

[Scope of utility model registration request] In a bus cooling system, blow-off ducts are provided on both shoulders of the ceiling in the longitudinal direction of the bus, and cold air is blown out from individual blow-off ports. A cooling device for a bus, characterized in that a blower for sending air to the evaporator is installed at the center of the bus of the evaporator.