JP3510571B2 - Bus vehicle air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a bus vehicle capable of performing an appropriate air conditioning control in accordance with a heat load distribution state in a bus cabin. 2. Description of the Related Art An air conditioner for a bus vehicle capable of controlling an air conditioner according to a heat load distribution state in a passenger compartment of a bus is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 7-108814. In general, this type of device passes a single cooler duct through the left and right ends of the ceiling of the vehicle along the front-rear direction of the vehicle to provide a cool air outlet and a damper for each of the front, center and rear zones in the bus cabin. And the amount and direction of the cool air supplied from one end of the cooler duct from the cooler unit is blown out to each zone by controlling the damper. In the above-mentioned conventional air conditioner for a bus vehicle, the air volume and the wind direction are adjusted according to the heat load distribution in each of the front, center and rear zones in the bus cabin. Although it is possible to control the cool air, the cool air is supplied from one end of one long cooler duct passing in the front-rear direction of the vehicle. There is a problem that the air volume is reduced at a portion far from the one end side where the air is supplied. If the air volume of the blower is increased in order to solve this problem, the air volume of a portion far from the one end to which the cool air is supplied is secured. However, there are problems in that the size of the blower is increased and the cost is increased, and that the air flow over the entire length of the cooler duct is caused such that the air flow at one end of the cooler duct to which the cool air is supplied is significantly increased. Further, there is a built-in type in which the cooler unit is mounted in the cooler duct, but in this case, there is a problem that the maintenance and inspection of the cooler unit is poor. An object of the present invention is to provide an air conditioner for a bus vehicle in which the air volume in each of the front, center, and rear zones in the bus cabin is ensured to facilitate maintenance and inspection of the cooler unit. . [0005] In order to achieve the above object, the present invention provides a bus vehicle having a front zone, a center zone,
Zone and rear zone, and each zone has a temperature control
In an air conditioner that is controlled,
Divide the flat cooler duct into three for each zone
The left and right edges of the ceiling of the bus vehicle extend along the front and rear directions of the bus vehicle.
A cooler unit comprising an evaporator, a reheat core and a blower, which can be independently controlled for air conditioning, is installed on each of the cooler ducts in communication with each of the cooler ducts, and a luggage shelf is placed in front of the cooler ducts.
Where the cooler units are installed
A lid for hiding the cover is fixed . Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 30 denotes a bus vehicle. In the present invention, the interior of the bus
0, the central zone 11 and the rear zone 12, prior to the cooler duct 5 flat of closing the opposite ends along the longitudinal direction of the bus vehicle 30 to the ceiling of the left and right ends of each of these zones
A cooler unit 6 which is divided into three zones corresponding to the respective zones 10, 11 and 12 and comprises an evaporator 8, a reheat core 7 and a blower 9 and which can be independently controlled for air conditioning is provided on each of the cooler ducts 5. Is installed in communication with the cooler duct 5. The evaporator 8 is connected to a condenser 2 of a cooling device driven by the engine 1 by a liquid refrigerant supply pipe 14, and is connected to a low-pressure low-temperature mist refrigerant return pipe 13 connected to a compressor (not shown). ing. The reheat core 7 is connected to the heating heat exchanger 3 near the engine 1 via a hot water supply pipe 15 and a hot water return pipe 16. Reference numeral 4 denotes a heating device connected to the hot water supply pipe 15. As shown in FIGS. 3 and 4, the cooler unit 6 has an evaporator 8 and a reheat core 7 arranged side by side, and a blower 9 is connected through a duct 25 to the evaporator 8.
Is connected so as to blow air to the back of the camera. As shown in FIG. 2, the cooler unit 6 is bolted by installing the reheat core 7 on the mounting seat 26 formed on the upper surface of each flat cooler duct 5 with the reheat core 7 facing the room. A cooler unit 6 installed on the upper surface of each cooler duct 5 has an outside air suction port 1 opened on the roof.
7 and the inside air suction port 18 opened to the indoor side, so that the combined air of outside air and inside air is taken in. In addition, each cooler duct 5 has an indoor outlet 19 and a window outlet 20 for cool air. Further, the present invention relates to a structure in front of the cooler duct 5.
A luggage shelf 21 is disposed on the surface.
A lid 23 for concealing the installation site of the cooler unit 6 is fixedly attached.
It is a good thing. Since the present invention has the structure as described above, the evaporator 8 of the cooler unit 6 supplies the liquid refrigerant from the condenser 2 through the liquid refrigerant pipe 14, and the low-pressure and low-temperature mist refrigerant from the evaporator 8 to the low-pressure and low-temperature mist refrigerant. Return piping 1
3 returns to a compressor (not shown), and the compressor supplies high-pressure high-pressure gas to the condenser 2. The reheat core 7 is supplied with hot water from the heating heat exchanger 3 by a hot water supply pipe 15, and the hot water from the reheat core 7 is returned to the heating heat exchanger 3 by a hot water return pipe 16. The blower 9 sucks the combined air of the outside air from the outside air suction port 17 and the inside air from the inside air suction port 18, and passes the cool air from the back of the evaporator 8 through the evaporator 8 through the reheat core 7 to the cooler duct 5 and blows out the indoor air. It blows out from the mouth 19 and the window-side outlet 20. The reheat core 7 adjusts the temperature of the cool air that passes through the evaporator 8 and is cooled to a set temperature. Therefore, in the present invention, in each of the front zone 10, the center zone 11 and the rear zone 12,
This is a configuration in which a flat cooler duct 5 having both ends closed is divided and arranged, and a cooler unit 6 capable of controlling air conditioning independently is installed in each cooler duct 5.
In addition to ensuring the air volume in each zone, appropriate air conditioning control can be obtained according to the heat load distribution state of each zone. A luggage shelf 21 is provided on the front of the cooler duct 5.
Each of the cooler units is placed on a stay 22 of a luggage shelf.
Since the cover 23 that conceals the installation site of the cooler unit 6 is fixed , the maintenance and inspection work of the cooler unit 6 can be easily performed by removing the stay 22 of the lid 23 that conceals the installation site of the cooler unit 6. . In addition, since the cooler duct 5 has a flat shape, the cooler duct 5 can be reduced in size and a one-man broadcast device or the like can be mounted in an empty space on the upper surface where the cooler unit 6 is not installed. As described above, according to the present invention, in each of the front zone, the center zone and the rear zone in the passenger compartment of the bus vehicle, the air volume is secured and the heat of each zone is secured. Appropriate air conditioning control can be obtained according to the load distribution condition, and the maintenance and inspection work of the cooler unit can be easily performed.The cooler duct can be reduced in size by using a flat cooler duct to reduce costs and reduce the space above the cooler duct. It has the advantage that it can be used.

[Brief description of the drawings] FIG. 1 is an overall schematic diagram of the present invention. FIG. 2 is a sectional view of a main part of the present invention. FIG. 3 is a front view of the cooler unit of the present invention. FIG. 4 is a plan view of a cooler unit according to the present invention. [Explanation of symbols] 1 engine 2 Capacitor 3 Heating heat exchanger 5 Cooler duct 6 Cooler unit 7 Reheat core 8 Evaporator 9 Blower 10 Front Zone 11 Central zone 12 Rear zone 21 Luggage shelf 22 Stay 23 lid

Claims (1)

(57) [Claims] [Claim 1] The interior of a bus vehicle is divided into a front zone and a center zone.
Zone and rear zone, and each zone has a temperature control
In an air conditioner that is controlled,
Divide the flat cooler duct into three for each zone
The left and right edges of the ceiling of the bus vehicle extend along the front and rear directions of the bus vehicle.
A cooler unit comprising an evaporator, a reheat core and a blower, which can be independently controlled for air conditioning, is installed on each of the cooler ducts in communication with each of the cooler ducts, and a luggage shelf is placed in front of the cooler ducts.
Where the cooler units are installed
An air conditioner for a bus vehicle, wherein a lid for concealing a vehicle is fixed .