JPH08132849A - Air conditioner for bus - Google Patents

Abstract

PURPOSE: To individually condition room temperature in respective zones by adjusting the quantities of conditioned air blown in the respective zones of front and rear, right and left in the car room of a bus. CONSTITUTION: The interior of a car room 2 is divided into a plurality of zones of front and rear, right and left, and variable speed fans 42A, 42B, and 42C are respectively provided in blow-off ducts 40 positioned in the divided respective zones.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus air conditioner.

[0002]

2. Description of the Related Art An example of a conventional bus air conditioner is shown in FIGS. As shown in FIG. 3, the bus 100
The air conditioner unit 1 is installed in the lower part of the. Cold air blowing ducts 4 extend in the front-rear direction on both sides near the ceiling in the passenger compartment 2, and warm air blowing ducts 6 extend in the front-rear direction on both sides near the floor in the passenger compartment 2. .

During the cooling operation, the cold air generated in the air conditioner unit 1 branches through the underfloor duct 22, passes through the pair of rising ducts 3 and enters the cold air blowing duct 4, and the cold air blowing duct 4 has a predetermined interval before and after. It is blown into the vehicle interior 2 from the blow-off port 5 formed by separating.

During the heating operation, the warm air generated in the air conditioner unit 1 passes through the underfloor duct 22 and the rising duct 3 and enters the warm air blowing duct 6, and the warm air blowing duct 6 is spaced forward and backward by a predetermined distance. The air is blown into the vehicle interior 2 from the formed air outlet 8.

FIG. 4 shows a schematic configuration of the air conditioner unit 1. A sub engine 10 is installed inside the air conditioner unit 1, and the compressor 11 and the condenser fan 12 are driven by the sub engine 10.

When the compressor 11 is driven, the refrigerant discharged from the compressor 11 enters the condenser 13,
Here, the condenser fan 12 radiates heat to the outside air to condense and liquefy it. The liquid refrigerant enters the evaporator 16 via the receiver 14 and the expansion valve 15, where it is evaporated and vaporized by exchanging heat with the air inside the vehicle or the outside air blown by the evaporator fan 9, and then returns to the compressor 11.

Inside the casing 17, an evaporator fan 9, an evaporator 16, a heater coil 18, an inside / outside air switching damper 19 and the like are housed. By switching the inside / outside air switching damper 19 while the evaporator fan 9 is operating, the air inside the vehicle compartment is sucked into the casing 17 from the inside air inlet 20 and the outside air is sucked into the casing 17 from the outside air inlet 21.

The air sucked into the casing 17 becomes conditioned air by passing through the evaporator 16 and the heater coil 18. The conditioned air is urged by the evaporator fan 9 and then blown out from the blowout port 37 to be blown under the floor. It branches via the duct 22 and goes through the pair of rising ducts 3 to the cold air blowing duct 4 when the vertical switching damper 7 is at the position shown by the broken line, and when the vertical switching damper 7 is at the position shown by the solid line, the warm air duct 6 Sent to.

During the heating operation, the sub-engine 10 is stopped, and the high-temperature engine cooling water flowing out from the running main engine (not shown) is supplied to the heater coil 18 via the preheater. Then, the fan motor 30 is driven, and the power from this is applied to the drive shaft 26, the pulley 27, the belt 28,
It is transmitted to the evaporator fan 9 via the pulley 29 to rotate it. At this time, the magnet clutch 25 is disengaged.

During the cooling operation, the sub engine 10 is driven. The power of the sub engine 10 is the pulley 23, the belt 24, the magnet clutch 25, the drive shaft 26,
It is transmitted to the evaporator fan 9 through the pulley 27, the belt 28, and the pulley 29 to rotate it. At this time, since the fan motor 30 is not energized, the fan motor 30 merely functions as a bearing.

[0011]

In the above-described conventional air conditioner for a bus, during the cooling operation, the air is blown from the blowout port 5 of the blowout duct 4 into the passenger compartment 2 due to the pressure loss due to the flow resistance of the conditioned air. Since the amount of air flow gradually decreases from the front part toward the rear part, the room temperature in the rear part inside the passenger compartment 2 becomes higher than other parts. In addition, the temperature distribution in the passenger compartment 2 also deteriorates depending on the distribution of passengers in the passenger compartment 2 and the direction of solar radiation incident on the passenger compartment 2. Further, since the temperature detected by one temperature sensor provided at the inside air intake 20 is input to the controller as a representative value of the air temperature in the passenger compartment, the capacity of the air conditioner for the bus is controlled, so that the control accuracy is improved. There was a problem that was bad.

[0012]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above-mentioned problems, and its gist is to provide an air conditioner unit for sucking air in a vehicle compartment to control the temperature, and a vehicle compartment. It is extended in the front-back direction on both sides near the ceiling,
In a bus air conditioner having a blowout duct that blows out conditioned air generated by the air conditioner unit into a passenger compartment, the passenger compartment is divided into a plurality of zones in the front, rear, left, and right, and a blowout located in each of the divided zones. The air conditioner for a bus is characterized in that a variable speed fan is installed in each duct.

In each of the zones, at least one or more vehicle interior air intake ports connected to the inside air intake port of the air conditioner unit are provided, and a room temperature detecting sensor is installed in each of the intake ports, and the room temperature detecting sensors are installed in accordance with the detected values of these sensors. By controlling the rotational speed of the variable speed fan, the temperature can be adjusted individually for each zone.

[0014]

In the present invention, at least 1 is set for each zone.
The room temperature detection sensors detect the temperature of the vehicle interior air sucked in through the above intake ports, and the rotation speed of the variable speed fan is controlled according to the detection values of these sensors to control the speed from the blowing ducts located in each zone to each zone. The temperature of each zone is individually adjusted by adjusting the air volume of the conditioned air blown into the zone.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG.
Is a schematic configuration diagram seen through from above, and FIG. 1 (B) is a control system diagram of Juan. In FIG. 1 (A), reference numeral 40 designates blow-out ducts arranged on both sides near the ceiling in the passenger compartment 2 and extending in the front-rear direction. On its lower surface, there are a large number of blow-out ducts 41 at predetermined intervals along the front-rear direction. Are formed.

Each of the blowout ducts 40 is connected to the blowout port 37 of the air conditioner unit 1 through the rising duct 3 and the underfloor duct 22 at approximately the center in the front-rear direction. At the front end and the rear end of each outlet duct 40, small variable speed fans 42A and 42B driven by electric motors are respectively provided.
, 42C and 42D are installed.

Reference numeral 43 is a suction duct disposed on both sides near the inner floor of the passenger compartment 2. A large number of suction ports 44 are formed on the side surface of the suction duct at predetermined intervals along the front-rear direction. Each intake duct 43 is divided into a front part and a rear part by a partition 45 in the center part thereof. The right front duct 43A, the right rear duct 43B, the left front duct 43C, and the left rear duct 43D are respectively connected to the air conditioner unit via the underfloor duct 46. 1 is connected to the inside air intake port 20.

Then, each duct 43A, 43B, 43C, 43D
Room temperature detection sensor for detecting the temperature of the vehicle interior air sucked from the suction port 44 to at least one of the suction ports 44 of the
47A, 47B, 47C and 47D are installed.

Room temperature detection sensors 47A, 47B, 47C, 47D
The detected value of is input to the controller 50 as shown in FIG. 1 (B), and the output from the controller 50 is a variable speed fan.
42A, 42B, 42C, 42D electric motors 48A, 48B, 48C
, 48D is input to control these speeds. Other configurations and operations are similar to those of the conventional one shown in FIGS. 2 and 3, and corresponding wear members are designated by the same reference numerals.

However, the room temperature detecting sensors 47A, 47B,
Variable speed fans 42A, 42B, depending on the detected values of 47C, 47D,
Since the rotation speeds of 42C and 42D are controlled, the temperature in each of these zones can be adjusted by individually adjusting the amount of air blown from the outlet 41 of the outlet duct 40 to the front right, rear right, front left, and rear left inside the passenger compartment. Can be individually temperature controlled.

In the above embodiment, the front and rear of the passenger compartment 2
It is divided into four zones on the left and right, but four or more, for example,
It can be divided into 6 and 8 zones. In this case, a variable speed fan is installed in each blowing duct located in each zone, and a suction port for the vehicle interior air located in each zone. A room temperature detection sensor may be installed in at least one of the above.

[0022]

According to the present invention, the interior of the vehicle is divided into a plurality of zones in the front and rear and left and right, and the variable speed fans are installed in the blowing ducts located in the divided zones. By controlling the number of revolutions, the air volume of the conditioned air blown into each zone can be adjusted.

In each zone, at least one vehicle interior air inlet connected to the inside air inlet of the air conditioner unit is provided, and a room temperature detecting sensor is installed at each of the inlets, and a variable speed fan is installed in accordance with the detected value of these sensors. By controlling the number of revolutions of the passenger compartment, the temperature in each zone can be adjusted individually regardless of the distribution of passengers in the passenger compartment or regardless of the presence or absence of solar radiation in the passenger compartment. You can improve comfort.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a schematic configuration diagram showing a bus air conditioner as seen through from above, and (B) is a control system diagram of a fan.

FIG. 2 is a schematic perspective view showing a conventional air conditioner for a bus.

FIG. 3 is a schematic configuration diagram of a conventional air conditioner unit.

[Explanation of symbols]

 2 Cabin 1 Air conditioner unit 40 Blowing duct 42A, 42B, 42C, 42D Variable speed fan 43A, 43B, 43C, 43D Suction duct 44 Suction port 47A, 47B, 47C, 47D Room temperature detection sensor

Claims (2)

[Claims] 1. An air conditioner unit for sucking air in a vehicle compartment to control the temperature, and a blowout duct extending in the front-rear direction on both sides near the ceiling of the vehicle compartment to blow out conditioned air generated by the air conditioner unit into the vehicle compartment. In a bus air conditioner equipped with a bus, the passenger compartment is divided into front and rear and left and right zones into a plurality of zones, and a variable speed fan is installed in each blowing duct located in each zone. Air conditioner. 2. In each of the zones, at least one or more vehicle interior air intake ports connected to the inside air intake port of the air conditioner unit are provided, and a room temperature detection sensor is installed at each of the intake ports, and the detection values of these sensors are set. The air conditioner for a bus according to claim 1, wherein the temperature can be adjusted individually for each zone by controlling the rotation speed of the variable speed fan in accordance with the above.