KR100706411B1 - An air-conditioning system of bus - Google Patents

Abstract

The present invention relates to a bus air conditioning system for controlling indoor air of a bus, comprising: an air inlet formed on an air conditioner cover protruding to an upper surface of a bus and allowing external air to flow into a vehicle; An outside air inlet passage through which outside air introduced through the inlet port flows; A ventilator including an indoor air circulation passage through which air in the vehicle interior is introduced and internal and external air switching means installed at an intersection point between the external air inflow passage and the indoor air circulation passage; A cooling device which is formed integrally with the ventilation device and flows in and out of the air passing through the internal and external air air switching means, and does not work when the vehicle is ventilated and operates only during cooling; A duct provided with a louver for supplying introduced outside air or cooling cool air to a passenger seat, and a discharge port provided in the passenger seat for selecting ventilation conditions; And an exhaust port installed at one side of the stairs of the entrance and exit to exhaust the air in the vehicle to the outside. And an operator operable by a driver adjacent to a driver's seat of a bus vehicle, and selecting internal and external air by the internal and external air air switching means of the ventilation device, whether air is cooled by the air conditioner, and the exhaust port by the driver's operation. It is configured to include a control unit for controlling whether or not to discharge the bet through.

Bus, Air Conditioning, Ventilation, Air Conditioning, Exhaust

Description

An air-conditioning system of bus

1 is a cross-sectional view illustrating the structure of the electric fan in the air conditioner system of a conventional bus.

Figure 2 is a view showing an embodiment of the emergency exit dual-purpose ventilation port in the air conditioning system of the conventional bus.

3 is a schematic diagram showing an air conditioning system of a bus according to the present invention;

4 is a detailed cross-sectional view of an air conditioning system of a bus according to the present invention.

5 is an embodiment showing an exhaust port of the air conditioning system of the bus according to the present invention.

6 is a cross-sectional view of the exhaust port of FIG. 5.

7 is a view showing a control unit of an air conditioning system of a bus according to the present invention;

* Description of the symbols for the main parts of the drawings *

10: ventilation device 12: internal and external air switching damper

14: blower 20: air conditioner

22: cooling duct 30: passenger seat duct

32: discharge port 34: the opening

40: exhaust port 42: exhaust port door

44: exhaust port grille 46: exhaust port actuator

50: control unit 52: forced ventilation button

54: natural ventilation button

The present invention relates to an air conditioning system of a bus, and more particularly, to use the air conditioner for cooling the room and the air conditioner for integrating the inside of the bus. Can be rapidly and quietly ventilated even if it is desired to be rapidly ventilated, and provides indirect ventilation to passengers who do not want to be exposed to outside air, thereby quickly contaminating indoor air without noise. The present invention relates to an air conditioning system of a bus that can be ventilated and always promotes a cool atmosphere so that passengers can enjoy a comfortable and comfortable journey.

In general, the air conditioner of the bus can be classified into air conditioners, heaters, and ventilators. Among them, an electric ventilator having its own fan and motor and an emergency exit door that can be opened or closed manually or electrically Manual and electric fans, which are installed on the ceiling, are mainly used.

The air conditioner of the bus is largely classified from a passenger car, because the air conditioner, the heater, and the ventilator, which are the air conditioner of the bus, are separately installed and operated separately.

In other words, the passenger car is concentrated in the HVAC (Heating, Ventilating, and Air-Conditioning) system in the center of the instrument panel, and the control can be integrated and made easy to use.

In contrast, the bus is equipped with a separate air conditioner and a ventilation device, and provided with each control device, which is inconvenient for the driver to use and has a limitation in providing a comfortable air conditioning environment for the passengers.

As shown in Fig. 1, the biggest disadvantage of the electric fan (sometimes inserted in the front and rear corners of the room) is provided between the ceiling 3 of the bus and the cover 2 covering the upper part of the motor. Passengers who are close to the ventilator due to the large amount of noise generated by the rotation of the fan 1 and the running noise caused by the driving wind colliding with the shutter unit 4. It is a very inconvenient environment for them.

Therefore, the driver has no choice but to turn off the ventilation system at the request of a passenger who sleeps on a late-night express bus or a passenger who wants to travel quietly during the day, which makes passengers uncomfortable for a long time in a stuffy indoor air condition. You have to endure it.

In addition, the winter and summer ventilation greatly reduces the heating and cooling performance, and also provides a very inconvenient environment by providing cold air and hot summer air to passengers close to the ventilation system.

On the other hand, as shown in Figure 2, the emergency exit 5 combined ventilating port 5 mounted on the ceiling of the bus is also open state due to the characteristics of the bus that runs at high speed, that is, exhaust (A), intake (B), or ventilation (C In the case of driving in a state of), the noise caused by the collision with the driving wind is directly transmitted to the passengers, and because the outside air is transmitted to the room without passing through the filter, all kinds of foreign substances can enter the room. .

The vent 5 may be manually opened or closed by a passenger or a driver, and may be electrically opened and closed by a switch operation in a driver's seat. In the case of an electric open / close type, a passenger near a vent may feel uncomfortable in noise or draft and may be closed by force. There is also a risk of failure.

In particular, the electric ventilator and the ventilation port have problems such as rainwater may be introduced to the passengers and the indoors may be polluted if the rain suddenly rains while the driver forgets the ventilation opening. .

An object of the present invention for solving the problems as described above, by using an air conditioner for cooling the room and the air conditioner for integrating the interior of the bus, it is possible to uniformly ventilate both the entire bus room and the passenger seat without noise In this case, it is possible to rapidly ventilate very quietly even if it is desired to be rapidly ventilated, and to provide indirect ventilation to passengers who do not want to be exposed to outside air, thereby quickly venting contaminated indoor air without generating noise. The goal is to provide an air-conditioning system for the bus that, at the same time, allows the passengers to enjoy a comfortable and comfortable journey by creating a cool atmosphere.

In the bus air conditioning system for controlling the indoor air of the bus according to the present invention for achieving the above object, the air inlet formed on the air conditioner cover protruding to the upper surface of the bus and the outside air can be introduced into the vehicle ; An outside air inlet passage through which outside air introduced through the inlet port flows; A ventilator including an indoor air circulation passage through which air in the vehicle interior is introduced and internal and external air switching means installed at an intersection point between the external air inflow passage and the indoor air circulation passage; A cooling device which is formed integrally with the ventilation device and flows in and out of the air passing through the internal and external air air switching means, and does not work when the vehicle is ventilated and operates only during cooling; A duct provided with a louver for supplying introduced outside air or cooling cool air to a passenger seat, and a discharge port provided in the passenger seat for selecting ventilation conditions; And an exhaust port installed at one side of the stairs of the entrance and exit to exhaust the air in the vehicle to the outside. And an operator operable by a driver adjacent to a driver's seat of a bus vehicle, and selecting internal and external air by the internal and external air air switching means of the ventilation device, whether air is cooled by the air conditioner, and the exhaust port by the driver's operation. It is configured to include a control unit for controlling whether or not to discharge the bet through.

According to an embodiment of the present invention, the internal and external air air switching means of the ventilation device is rotated between the closed position of the indoor air circulation passage and the closed position of the external air inflow passage by driving of a motor installed at one side of the Cooling device It is composed of an internal and external air switching damper for selecting the air to be introduced, the air passing through the internal and external air switching damper is characterized in that the forced circulation by the drive of the blower.
According to an embodiment of the present invention, the blower is characterized in that the air conditioner blower of the cooling device.
According to an embodiment of the present invention, the cooling duct is provided with the opening which is always opened toward the indoor air circulation passage.
According to an embodiment of the present invention, the exhaust port includes an inlet through which indoor air is introduced, an actuator driven by an operation signal of a controller, and a door in which opening and closing is controlled by the actuator, and by the internal and external air air switching means, The door is opened when outside air is introduced into the vehicle.
According to an embodiment of the present invention, the door is opened at 45 ° in the opposite direction to the vehicle travel direction by the actuator at the time of opening, the control unit opens the door, and the indoor and outdoor air switching means is the indoor air. A natural ventilation button is provided to close the circulation passage and open the external air inflow passage, so that natural ventilation is possible without driving of the blower while the vehicle is running.

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Hereinafter, a preferred embodiment of a bus air conditioning system according to the present invention will be described with reference to the accompanying drawings.

3 is a schematic view showing an air conditioning system of a bus according to the present invention, FIG. 4 is a detailed cross-sectional view of an air conditioning system of a bus according to the present invention, and FIG. 5 shows an exhaust port of an air conditioning system of a bus according to the present invention. 6 is a cross-sectional view of an exhaust port of FIG. 5, and FIG. 7 is a view illustrating a control unit of an air conditioning system of a bus according to the present invention.

As shown in the figure, the air conditioning system of the bus according to the present invention is composed of a ventilator 10, a cooling apparatus 20, a duct 30, an exhaust port 40, and a control unit 50.

As shown in FIG. 3, the ventilator 10 includes an inlet 13 for introducing external air into the vehicle.

As shown in FIG. 4, the ventilator 10 includes internal and external air in which opening and closing is selectively controlled by driving a motor 11 installed at one side to supply external air or circulate indoor air. An internal and external air switching damper 12 is provided as a switching means.

That is, the internal and external air switching damper 12 rotates between the closed position of the indoor air circulation passage 16 and the closed position of the external air inflow passage 18. In order to introduce external air, the indoor air circulation passage 16 Instead of blocking the external air inlet passage 18 is opened, and in order to circulate the indoor air, the indoor air circulation passage 16 is opened instead of blocking the external air inlet passage 18.

In addition, the internal and external air switching damper 12 includes a blower 14 for blowing air introduced into the vehicle interior, the blower 14 may use an air conditioner blower of the air conditioner cooling device 20. Air passing through the internal and external air switching damper 12 is circulated by the blower 14.

The cooling device 20 is formed integrally with the ventilation device 10 to discharge the air introduced through the internal / external air switching damper 12, and the air is not operated at the time of ventilation inside the vehicle and is operated only at the time of cooling to provide air. It is air conditioner to cool.

The cooling device 20 is provided with a cooling duct 22 in which the refrigerant installed in front of the blower 14 flows in the flow path of the ventilation device 10.

Therefore, in order to make the interior of the vehicle cool, the air conditioner is operated to allow the cool refrigerant to flow through the cooling tuck 22, and then operate the blower 14 to blow the cool wind into the room.

The duct 30 (refer to FIG. 3) extends toward each passenger seat to supply air or cooling cold air introduced from the outside through the air conditioner 20 to the passenger seat, and serves to induce comfortable air or cool air to the passenger seat. Do it. The discharge port 32 provided in the passenger seat is provided with a louver for selecting a ventilation condition to provide a function of adjusting the cold air discharge direction, the discharge amount and the opening and closing according to the taste desired by the passenger.

Therefore, all passengers in the vehicle are always able to use the fresh and comfortable air and cool air freely adjusted as the passenger intends.

As described above, the bus air conditioning system of the present invention integrates an air conditioner and a ventilation device, and as shown in FIG. 4, is installed in an air conditioner mounted on the roof of a bus and performs a 100% internal and external air switching function. By controlling the internal and external air switching dampers 12, the driver can select and use the indoor air and the outside air appropriately. In addition to selecting the indoor air or the outside air during the cooling operation, one of the inside and the outside air during the ventilation operation is also available. You can select and use.

The duct 30 is provided with a constant opening 34 made of a grill so that air can circulate even when all the outlets 32 of the passenger seat are closed.

Thus, it is possible to benefit from indirect ventilation for some passengers who are uncomfortable with the direct flow of air flowing through the airflow.

As illustrated in FIG. 5, an exhaust port 40 for discharging air inside the vehicle is provided at one side of the doorway stairs 7 with an exhaust port grill 44 so that the inlet of the exhaust port 40 is dusty. Even if it is contaminated, it does not significantly affect the appearance and is formed for easy cleaning.

The door 42 of the exhaust port 40 is opened and closed at 45 ° in the direction opposite to the vehicle travel direction by the operation of the actuator 46 (see FIG. 6), and the internal and external air switching dampers 12 are 100% of external air. Only open on inflow.

The air conditioning system of the present invention discharges indoor air by using a forced ventilation method (see FIG. 4) by an air conditioner equipped with a 100% internal and external air switching function and mounted on a bus roof (see FIG. 4), and a negative pressure formed according to the traveling speed of the bus. A natural ventilation method (see FIG. 5) through the exhaust port 40 can be applied.

Particularly, in the natural ventilation method, when the driver presses the natural ventilation button 54 (internal and external air switching control) of the control unit 50, the internal and external air switching damper 12 opens at 100% external air inflow state and at the same time. The door 42 of the exhaust port 40 is opened.

The control unit 50 is installed adjacent to the driver's seat of the bus so as to be operated by the driver, and the driver operates the control unit 50 to drive the internal and external air switching dampers 12 of the ventilator 20. It is possible to control the selection of internal and external air, whether the air is cooled by the operation of the air conditioner 20, and opening / closing the door 42 of the exhaust port 40. The control unit 50 separately constitutes a forced ventilation button 52 for operating the blower 14 and introducing external air, and a natural ventilation button 54 for introducing external air using the internal and external air switching dampers 12. do.

Looking at the embodiment through the forced ventilation method, natural ventilation method, and indirect ventilation method that is executed by using the air conditioning system of the bus of the present invention composed of the above components as follows.

The forced ventilation method is a method of quiet ventilation and rapid ventilation if necessary, and is used for rapid ventilation when natural air is insufficient only when the vehicle indoor air is severely contaminated with food smell or other odors.

At this time, when the driver presses the forced ventilation button 52, both the door 42 of the air conditioner and the exhaust port 40 are opened, and the blower 14 of the air conditioner is operated to enable rapid ventilation.

The forced ventilation method can be used even in a stopped state in which almost no effect can be achieved through the natural ventilation method.

The natural ventilation method is to quietly ventilate both the interior of the bus and the passenger seat without noise, so that the ventilation is made in a very quiet state while driving, allowing passengers to enjoy the trip in a comfortable state.

When the driver presses the natural ventilation button 54 (internal and external air switching control) of the controller 50 while driving, external air introduced through the air intake port 13 of the air conditioner on the roof passes through the duct 30 through the passenger seat outlet 32. The air supplied to the room and introduced into the room is discharged through the door 42 of the exhaust port 40 installed in the entrance and exit stairs 7 of the bus.

At this time, the outside air flowing into the air conditioner is purified while passing through the filter of the air conditioner, and the noise generated when the outside air collides with the outside air inlet 18 of the air conditioner is also extinguished through the duct 30, so that only pleasant air flows into the room. Will be.

In addition, the outlet 40 is also because the indoor air is drawn out by the negative pressure generated by the running of the bus does not introduce external noise.

Therefore, all passengers can feel the flow of outside air of 0.1 to 1.5 m / s (proportional to the running speed of the bus) supplied to the passenger seat discharge port 32 installed in the duct 30, it can be seen through FIG. As it is ventilated while the outside air circulates through the entire room, even if you close the discharge port 32 directed to it can enjoy the benefits of ventilation.

The indirect ventilation method is a method used when some passengers feel unpleasant to directly close the air flowing by the air flow generated by the natural ventilation method while driving or the forced ventilation method while stopping.

Therefore, a regular opening 34 made of a grill is provided on the side of the tray 30 so that air can circulate even when all the passenger seat outlets 32 are closed (see FIG. 4).

The indirect ventilation method can reduce the flow of air, but all passengers can benefit from indirect ventilation.

Although the above has been shown and described with respect to the preferred embodiments of the present invention, the present invention is not limited to the above-described embodiment, in the technical field to which the present invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes will fall within the scope of the claims set forth.

Using the bus air conditioning system according to the present invention as described above can obtain the following effects.

first. In addition to being able to quickly ventilate contaminated indoor air without generating noise, it always promotes a cool atmosphere, allowing passengers to enjoy a comfortable and pleasant journey.

second. It is able to supply enough outside air to the room, so it is a little cool to cool down, but it is a bit hot to close all the doors and to create a heat environment that satisfies most passengers in the bus even in the middle of spring and autumn. have.

third. The current bus air conditioner circulates almost 100% indoor air, eliminating the frustration that can be felt, and allowing 100% outside air to be used for soft cooling.

fourth. Winter heating operation also feels dry, stuffy and hot because it circulates only 100% of indoor air, but using the natural ventilation method can provide passengers with a pleasant air-conditioning environment of the Doohan family because fresh outside air is supplied from the head of the passenger. have.

Claims (7)

In the bus air conditioning system for controlling the indoor air of the bus, An air inlet 13 formed in an air conditioner cover protruding to an upper surface of the bus and capable of introducing external air into the vehicle; An external air inlet passage 18 through which external air introduced through the inlet 13 flows; A ventilator including an indoor air circulation passage 16 through which air in a vehicle is introduced and internal and external air switching means installed at an intersection point of the external air inflow passage 18 and the indoor air circulation passage 16 ( 10); A cooling device (20) formed integrally with the ventilation device (10), the air passing through the internal and external air air switching means is introduced and discharged, and is not operated at the time of ventilation inside the vehicle, and is operated only at cooling; A discharge port 32 provided to the passenger seat to supply the introduced external air or cooling cool air to the passenger seat, and a duct 30 provided with a louver for selecting a ventilation condition; And Is installed to one side of the staircase 7 of the doorway is formed to discharge the air in the vehicle to the outside and the exhaust port 40; And It is installed adjacent to the driver's seat of the bus vehicle and operable by the driver, and the internal and external air is selected by the internal and external air air switching means of the ventilation device 20 by the driver's operation, and the air is cooled by the air conditioning device 20. Air conditioning system of the bus, characterized in that it comprises a control unit (50) for controlling whether or not to discharge the bet through the exhaust port (40). The method of claim 1, The internal and external air air switching means of the ventilation device 10 is driven between the closed position of the indoor air circulation passage 16 and the closed position of the external air inflow passage 18 by driving the motor 11 installed on one side. It consists of an internal and external air switching damper 12 for selecting the air to be introduced into the cooling device 20 while rotating in, the air passed through the internal and external air switching damper 12 is capable of forced circulation by the blower (14) Air conditioning system of the bus, characterized in that. 3. The air conditioning system of a bus according to claim 2, wherein the blower (14) is an air conditioner blower of the air conditioner (20). The method of claim 3, The air conditioning system of the bus, characterized in that the duct (22) is provided with the opening (34) that is always opened toward the indoor air circulation passage (16). The method according to claim 1 or 4, The exhaust port 40 includes an inlet through which indoor air is introduced, an actuator 46 driven by an operation signal of the controller 50, and a door 42 controlled to be opened and closed by the actuator 46. The air conditioning system of the bus, characterized in that the door (42) is opened when the outside air is introduced into the vehicle by the air switching means. The method of claim 5, And the door (42) is opened by the actuator (46) at 45 [deg.] In the direction opposite to the vehicle travel direction when opened. The method of claim 6, The controller 50 has a natural ventilation button 54 in which the door 42 is opened, and the internal and external air air switching means closes the indoor air circulation passage 16 and opens the external air inflow passage 18. And an air conditioner system configured to enable natural ventilation even without driving of the blower (14) while the vehicle is running.

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