JPH0636913U - Cooling equipment for large buses - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a cooling device for a large-sized bus that can improve the cooling efficiency in the vehicle and can improve the front-rear balance of the vehicle body. [Structure] Cooling units are provided on the front and rear of the ceiling wall of the vehicle body, respectively, and are connected to both cooling units so as to form a flat cooling duct over substantially the entire surface of the ceiling wall. A large number of cold air blowout holes were formed in the edge portion and the left and right side portions near the central portion at intervals in the front-rear direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cooling system for a large bus.

[0002]

[Prior art]

 Conventionally, as one form of a cooling system for a large-sized bus, cooling units b and b are arranged on the front or rear left and right sides of a ceiling wall a of a vehicle body, respectively, as shown in FIGS. Cooling ducts d, d are formed at the left and right side corners of the cooling duct b, respectively so as to extend in the front-rear direction, and the front or rear portions of the cooling ducts d, d are connected to the cooling units b, b, respectively. In some cases, a large number of cold air blowing holes e are formed in the bottom wall portion and the inner wall portion of d, respectively, with a certain interval in the front-rear direction. c is an air intake.

[0003]

[Problems to be solved by the device]

 However, in the above-described cooling device, since the cooling units b, b are arranged at the front part or the rear part of the ceiling wall a of the vehicle body, the cooling ducts d, d extending rearward or forward from the cooling units b, b. When the cool air is sent to the rear end portion or the front end portion, the cool air is blown out from the cold air blowout hole e in the middle, and the cool air blowout efficiency from the cool air blowout hole e on the rear end or front end side of the cool air ducts d, d is It was much worse than the end side, and there was a problem that cold air could not be uniformly supplied into the vehicle through the respective cold air outlets e.

Further, in the above refrigeration system, a large number of cold air blowout holes e are formed in the inner wall portions of the left and right cooling ducts d, d so that the cool air is blown inward as well. However, there was also the problem that the cooling efficiency of the central part of the car was poor.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, cooling units are provided at the front and rear of the ceiling wall of the vehicle body, respectively, and are connected to both cooling units so as to form a flat cooling duct over substantially the entire ceiling wall. , A cooling system for a large-sized bus, characterized in that a large number of cold air blowout holes are formed at the left and right side edges of the cooling duct and the left and right side portions near the center part at intervals in the front-rear direction. To do.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 is a large bus equipped with a cooling device B according to the present invention, 1 is a vehicle body, 2 is a driving section, 3 and 4 are front and rear wheels, 5 is a prime mover section, 6 , 7 are passenger seats respectively arranged on the left and right sides of the floor surface 1c, and 8 is a passage formed on the floor surface 1c located between the left and right passenger seats 6, 7. Reference numeral 30 is a heat insulating material, 31 is a supporting material, and 32 is an illuminating lamp.

As shown in FIGS. 1 to 3, the cooling device B has cooling unit housings 10 and 11 projecting upward from the front and rear of the ceiling wall 1a of the vehicle body 1, respectively. Cooling units 12 and 13 are arranged in the unit storage sections 10 and 11, respectively, and are connected to both cooling units 12 and 13 to form a flat cooling duct 14 over substantially the entire ceiling wall 1a. A large number of cold air blowout holes 15 are formed in the left and right side edges of 14 and the left and right side portions near the central portion at regular intervals in the front-rear direction. Reference numeral 9 is a ceiling handrail bracket attached to the cooling duct.

As shown in FIG. 1, the cooling units 12 and 13 are connected to a compressor (not shown) provided in the prime mover section 5 via a condensing unit 16, and the cooling units 12 and 13 are connected to each other. The control panel 17 provided in the driving unit 2 controls the cooling temperature inside the vehicle via the control unit 18 disposed at the rear of the vehicle body 1. 33 is a connecting pipe.

As shown in FIGS. 1 to 4, the cooling unit accommodating portions 10 and 11 are formed in a rectangular box shape that is long in the front-rear direction, and the outside air intake holes 20 and 21 are formed in the front and rear walls, respectively. The outside air intake passage 22 is formed on the left side inside the cooling unit housing 10 at the front, and the outside air intake passage 22 and the cooling unit 12 are connected via the outside air introduction damper 23. While allowing communication and interruption, an inside air intake port 24 is formed in a portion of the cooling duct 14 located substantially directly below the outside air intake passage 22. Reference numeral 25 denotes a connection cooling duct. The connection cooling duct 25 has one end connected to the cooling unit 12 and is connected to the right side portion of the cooling duct 14 via a communication port 26.

Further, the inside of the rear cooling unit accommodating portion 11 is also configured similarly to the front cooling unit accommodating portion 10, but as shown in FIG. 5, the outside air intake passage 22 and the inside air intake port 24 are arranged. The arrangement position of is arranged opposite to that of the front cooling unit storage section 10.

In this way, as shown in FIGS. 1, 3 and 4, the air taken in from the outside air intake hole 20 and the inside air intake port 24 is taken into each cooling unit 12, 13 and Cooling air is supplied from the cooling units 12 and 13 to the connecting cooling duct 25 → communication port 26 → cooling duct 14, and the cooling air is blown into the vehicle through the cooling air blowing holes 15 formed in the cooling duct 14.

At this time, as shown in FIG. 5, the cool air that is pressure-fed by the cooling unit 12 arranged in the front part of the vehicle body 1 is introduced from the nearest cool air blowing hole 15 arranged in the front half part of the cooling duct 14 into the vehicle interior. The cool air that is blown into the vehicle and is sent by the cooling unit 13 arranged in the rear part of the vehicle body 1 is blown into the car from the nearest cool air blowing hole 15 arranged in the latter half of the cooling duct 14, It is possible to cool the air from the front side to the rear side substantially evenly.

Moreover, as shown in FIGS. 1 and 2, the cooling duct 14 is formed over substantially the entire surface of the ceiling wall 1a, and in particular, also on the left and right side portions near the center of the cooling duct 14. Since the cold air blowout holes 15 are formed at regular intervals in the front-rear direction, the cool air blowout holes 15 allow the cool air to flow from above to immediately below the passage 7 formed in the center of the vehicle. In addition, cool air is blown directly downward from the cool air blowout holes 15 formed at the left and right side edge portions of the cooling duct 14 with a certain interval in the front-rear direction. Since the inside of the vehicle is cooled substantially uniformly along with the cool air by flowing down along the left and right side walls, the cooling efficiency can be remarkably improved also from this point.

[0015]

[Effect of device]

 According to the present invention, the following effects can be obtained.

That is, since the cooling units are arranged at the front and rear portions of the vehicle body, the cooling unit can reliably cool the front half portion and the rear half portion of the vehicle body, respectively, thereby improving the cooling efficiency. It is possible to improve the front-rear weight balance of the vehicle body.

Moreover, a cooling duct connected to both cooling units is formed flat over substantially the entire ceiling wall of the vehicle body, and a large number of cooling ducts are provided at the left and right side edges of the cooling duct and the left and right side portions near the center. Since the cool air blowout holes are formed at intervals in the front-rear direction, the cool air blows out not only from the left and right sides of the vehicle, but also from the upper part to the lower part of the vehicle to evenly cool the inside of the vehicle. This also makes it possible to improve the cooling efficiency inside the vehicle.

[Brief description of drawings]

FIG. 1 is a perspective view showing a large-sized bus equipped with a cooling device according to the present invention.

FIG. 2 is a cross sectional rear view of the same large-sized bus.

FIG. 3 is a perspective explanatory view of a cooling device.

FIG. 4 is an enlarged cross-sectional explanatory view of a cooling device.

FIG. 5 is an explanatory view of cold air blowing of the cooling device.

FIG. 6 is an explanatory plan view of cold air blowing of a conventional cooling device.

FIG. 7 is a front view of a conventional cooling device for blowing out cool air.

[Explanation of symbols]

 A Large-sized bus B Cooling device 10 Cooling unit storage part 11 Cooling unit storage part 12 Cooling unit 13 Cooling unit 14 Cooling duct 15 Cold air blowout hole

Claims (1)

[Scope of utility model registration request] 1. A cooling unit (12), (13) is arranged at a front portion and a rear portion of a ceiling wall (1a) of a vehicle body (1), and is connected to both cooling units (12), (13) so as to communicate with each other. Let the ceiling wall (1
Form a flat cooling duct (14) over almost the entire surface of a),
Cooling of a large-sized bus characterized in that a large number of cold air blowout holes (15) are formed at the left and right side edges of the cooling duct (14) and the left and right side portions near the central portion at intervals in the front-rear direction. apparatus.