KR20130031164A - An air-conditioning system of bus and air-conditioning method of bus - Google Patents

Abstract

PURPOSE: A system and a method for air-conditioning of a bus are provided to improve fuel efficiency and increase the output of an engine by considering the separate opening of individual vents by seats. CONSTITUTION: A system and a method for air-conditioning of a bus comprises a warm air-conditioning device(20), a main duct(21), a plurality of individual ducts(22), air flow rate adjusting units(11,12), an air flow sensor(23), and a control unit(30). A plurality of individual ducts is branched from the main duct and separately blows air at a predetermined temperature by seats. An air flow sensor measures the change of air flow inside the main duct which varies according to the opening amount of the air blow rate adjusting unit on a real time basis. The control unit determines the operation level of the air-conditioning device according to the measured change of air flow.

Description

An air-conditioning system of bus and air-conditioning method of bus}

The present invention relates to a system for controlling air volume in real time in a cooling and cooling system for a bus and a method of providing the same, and more specifically, to measure a wind pressure in a duct controlled by a passenger according to opening and closing of a tuyer when the interior is hot or cold, and using the same. By controlling so as to adjust the supply level and the blowing amount of the overall cold air, the present invention relates to a real-time control system and a method of providing the airflow amount of the air-conditioning device for buses that can prevent energy waste, improve the fuel efficiency of the vehicle and increase the output of the engine.

In general, a bus air conditioner is a device mounted on a roof of a bus to cool an internal space of a bus, and a condensation chamber is provided at one side to form a liquid refrigerant by heat-exchanging compressed high-temperature / high-pressure refrigerant gas with external air. Condenser is built in

In addition, an evaporation chamber is provided on the opposite side of the condensation chamber, and an evaporator is provided inside the evaporation chamber to evaporate a refrigerant liquefied through the condenser to exchange heat with air in the room.

The bus air conditioner is mounted so that the condensing chamber faces forward, and a condenser for liquefying refrigerant gas in the center is provided to divide the condensing chamber from side to side by a separate frame. In addition, a plurality of condensation fans forcibly supplying air to the condenser is mounted on the upper part of the condenser, and a plurality of condensation fans are connected to the upper frame. It is provided.

And, both sides of the upper cover is provided with a side door to open and close the condensation chamber up and down, the side door is formed with a plurality of side inlets so that air can be introduced by the condensation fan. Thus, the condenser is cooled by the outside air introduced through the side inlets.

In the evaporation chamber, an outside air inlet is formed at the center of the roof of the evaporation chamber so as to face each other, and an air induction plate is installed between the indoor air intake port and the outside air intake port, and both air induction passages of the air induction plate and the evaporator are provided. Internal and external air switching dampers are provided in between.

Therefore, by adjusting the internal and external air switching damper to vent the outside air into the indoor space to ventilate the internal space of the bus.

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.

1 is a perspective view showing a bus employing a cooling device for a bus according to the present invention.

As shown in these figures, in the cooling system using the cooling device for a bus according to the present invention, the cooling device is mounted on the upper surface of the roof of the bus, and the high temperature and high pressure gas generated by the compressor provided on the rear side of the bus. The refrigerant is transferred to a condenser to be described below to convert the liquid refrigerant into the liquid refrigerant in the condenser, and the liquid refrigerant is reduced to a low temperature low pressure liquid refrigerant through an expansion valve.

In addition, the liquid refrigerant converted as described above is supplied to an evaporator, thereby cooling the air by transferring heat from outside air or inside the bus.

Air cooled in this way is discharged back into the bus through the blower fan to harmonize the inner space of the bus comfortably, and the heat exchanged refrigerant is transferred to the compressor to compress and condense to cool the inner space of the bus as described above. The cycle of expansion-evaporation is carried out continuously.

On the other hand, of the components forming the circulation cycle as described above except for the compressor is all provided in the interior of the cooling device provided on the roof of the bus.

Current bus air conditioners are controlled by the driver, which makes it difficult to operate the passenger's needs properly.

For example, in the case of a bus, when a passenger is far away from the driver's seat, it is difficult to request an operation or stop at that time, and the only action that the passenger can take is to shut off the airflow by closing the airflow control device when feeling cold.

In this case, since the air conditioner is continuously operating, it is inefficient in terms of energy saving and causes a load on the air conditioner.

In connection with the operation of such an air conditioner, waste energy by automatically controlling the blower of the air conditioner by using a flow rate change in the duct and a change in the blower load in accordance with the behavior of the passenger to operate the air flow control device when the room is hot or cold There is a need for a cooling control method and control device for a bus that can prevent fuel consumption and improve fuel efficiency of a vehicle and increase engine output.

The present invention measures whether the passengers are opened or closed when the room is hot or cold by controlling the opening and closing of the air vent through the sensor, and by using this to control the overall level of supply of cold wind and the amount of blowing air to prevent waste of energy and fuel economy of the vehicle The present invention aims to provide a cooling system control system for buses and a method of providing the same, which consider whether or not to open a vent for each seat that can improve the output and increase the output of the engine.

In addition, when the room is hot or cold, the passengers can control the air flow in the duct to determine whether the air is opened or closed according to the opening / closing behavior of the duct. The present invention provides a bus cooling system control system and a method of providing the same, which consider whether or not a per-seat opening of a seat can be improved to improve fuel efficiency of a vehicle and increase an output of an engine.

The present invention provides the following means for solving the above problems.

The present invention is a bus air conditioning system control system for performing a hot air cooling divided by the seat, the air cooling device 20 for supplying air of a set temperature and the air of the temperature set from the air cooling device 20 transfers The main duct 21, a plurality of individual duct 22 branched from the main duct 21 to transfer the air of the temperature set for each seat, and the air flow control unit for controlling the opening and closing of the individual duct 22 (11, 12), the sensor 13 for measuring the opening and closing of the individual duct 22, and the number of open air flow control unit (11, 12) from the sensor 13 is received, based on this It characterized in that it comprises a control unit 30 for determining the operation level of the warm air conditioner (20).

In this case, the sensor 13 is provided so as to measure the open areas of the airflow control units 11 and 12, and the control unit 30 opens the airflow control units 11 and 12 from the sensor 13. It is characterized in that it comprises a control unit 30 receives the area, and determines the operation level of the warm air conditioner 20 based on the total open area.

In particular, the controller 30 increases the operating level of the warm air conditioner 20 when the number of the open increases, and decreases the operating level of the warm air conditioner 20 when the open number decreases. It is characterized by.

In another embodiment of the control system for controlling the heating and cooling system for a bus to perform the cooling divided by the seat according to the present invention, the heating and cooling device 20 for supplying air of a set temperature, and the temperature set from the heating and cooling device 20 The main duct 21 for transporting the air of the air, the plurality of individual duct 22 branched from the main duct 21 for conveying the air of the temperature set for each seat, and the opening and closing of the individual duct 22 is adjusted And a flow rate sensor 23 for measuring in real time a change in the volume of the air in the main duct 22 that changes according to the opening and closing amounts of the blowing amount adjusting units 11 and 12, and the It characterized in that it comprises a control unit 30 for determining the operating level of the air-conditioning device 20 according to the change in the air flow rate measured from the air flow rate sensor 23.

In this case, the controller 30 increases the operating level of the warm air conditioner 20 when the measured air volume increases, and decreases the operating level of the warm air conditioner 20 when the measured air volume decreases. It is characterized by.

In addition, the present invention is a hot-cooling device 20 for supplying air of a set temperature, the main duct 21 for transferring the air of the temperature set from the hot-cooling device 20, and branched from the main duct 21 13, a plurality of individual ducts 22 for transporting air at a temperature set for each seat, and a sensor 13 for measuring whether the airflow amount adjusting units 11 and 12 open or close the air amount discharged from the individual ducts 22. The present invention provides a method for controlling a hot air cooling system for a bus that performs hot air cooling classified by seats performed in an environment including a first step, the first step of operating the hot air cooling device 20 at a preset blowing amount, and the And a second step of detecting a change in the open / close state of the individual ducts 22 from the sensor 13, and a third step of changing the preset air blowing amount in real time according to the change amount of the open / close state of the individual ducts 22. and In this case, the first to third steps may be repeated.

In this case, the sensor 13 is provided to measure the open area of the air flow control unit (11, 12), and the open / close state change amount is the change in the open area of the total air flow control unit (11, 12) It features.

Moreover, from the hot-cooling apparatus 20 which supplies air of the set temperature which concerns on this invention, the main duct 21 which conveys the air of the set temperature from the said hot-cooling apparatus 20, and from the said main duct 21, A plurality of individual ducts 22 which are branched to transfer air of a temperature set for each seat, air volume control units 11 and 12 which control the amount of air discharged from the individual ducts 22, and the main duct 21 In the method of controlling a cooling system for a bus for performing hot cooling divided by seats performed in an environment including an air flow sensor 23 capable of measuring a change in the blowing air amount in the inside, the warming air conditioner 20 is a preset blowing air amount. A second step of operating the air flow rate; and a second step of acquiring the airflow change amount in the mail duct 21 using the airflow sensor 13 according to the operation of the airflow control portions 11 and 12; According to the air flow change And a third step of recovering, in real time, the actual blowing amount of the warm / cooling device 20 to the preset blowing amount.

According to the present invention, when the room is hot or cold, the passengers can measure the opening or closing of the air vent according to the opening and closing behavior of the air vent, and by using the control to control the overall level of supply of cold wind and the amount of blowing air to prevent waste of energy and There is an effect of providing a cooling system control system for buses and a method of providing the same, which consider whether or not opening of a per-seat tuyere that can improve fuel economy and increase the output of the engine.

In addition, when the room is hot or cold, the passengers can control the air flow in the duct to determine whether the air is opened or closed according to the opening / closing behavior of the duct. There is an effect of providing a cooling system control system for buses and a method of providing the same, which considers whether or not opening of a per-seat air vent for improving fuel efficiency of the vehicle and increasing the output of the engine.

1 is a general configuration diagram of a cooling system of a bus.
Figure 2 is a block diagram of a cooling system control system for a bus considering whether or not the opening for each seat opening according to the present invention.
3 is a block diagram of a cooling system control system for a bus considering whether or not the opening of the air vent per seat according to the present invention.
Figure 4 is a block diagram of a cooling system control system for a bus considering whether or not the opening for each seat opening according to the present invention.
Figure 5 is a block diagram of a cooling system control system for a bus considering whether or not the opening for each seat opening according to the present invention.
Figure 6 is a block diagram of a cooling system control system for a bus considering whether or not the opening for each seat opening according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Even if the terms are the same, it is to be noted that when the portions to be displayed differ, the reference signs do not coincide.

The terms to be described below are terms set in consideration of functions in the present invention, and may be changed according to a user's intention or custom such as an experimenter and a measurer, and the definitions should be made based on the contents throughout the present specification.

The terms first, second, etc. in this specification may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a general configuration diagram of a cooling system of a bus, and FIG. 2 is a diagram illustrating a configuration of a system for predicting a temperature of a room according to an airflow amount in a duct and controlling a cooling air supply accordingly.

Conventionally, a method of adjusting the total air volume by measuring the air volume in the duct, predicting whether the air volume control device is opened or closed for each seat position has been used.

If the room is hot, the airflow control device of each seat is opened by the passenger's operation, and the air pressure in the duct decreases while the air pressure decreases.

When the room is cold, the airflow control device of each seat is closed by the passenger's operation, and the air pressure increases as the airflow resistance in the duct increases.

Therefore, the controller may control the air blowing amount to maintain the current wind pressure measured from the wind pressure sensor if it is out of a preset value.

The working principle of the present invention will be described in more detail as follows. If the room temperature is hot or cold, the passenger's response to the haptic temperature, ie opening or closing the airflow control device, is performed.

When the air flow control device is closed as the passenger feels cold, the air flow resistance in the duct increases → flow decreases in the duct → wind pressure increases, and when the air flow control device is opened according to the passenger feeling hot, the air flow in the duct Reduction of resistance → increase in flow rate in the duct → decrease in wind pressure.

When a change in the load value or the differential pressure value appears according to the passenger's response as described above, the corresponding control of the blower is performed after comparing the detected value with the reference value.

This is similar to the technique of adjusting the blowing intensity of the entire system by measuring the blowing amount in the duct described above. That is, the control stage of the blower is similar in that it can be maintained or down adjusted by reflecting the intention of the passenger.

2 to 6 illustrate a configuration diagram of a cooling system control system for a bus considering whether or not to open a vent for each seat according to the present invention.

The necessity of the subject which the present invention was devised is as follows.

The thermostat that maintains the existing specific temperature cannot reflect the taste of people who want different temperatures according to individual preferences in each situation.

In particular, if only one person opens the tuyeres, the remaining tuyeres are closed, so you can receive stronger and colder winds than you want. Furthermore, this can result in energy waste.

In addition, the opening and closing or opening direction of the individual air vents can be adjusted according to the needs of the individual, but the temperature in the total space must follow the centralized cooling system.

Accordingly, the present invention provides a system and a method for controlling the central heating and cooling apparatus by receiving a plurality of temperatures in a total space, and receiving feedback from a sensor of an individual tuyere.

2 to 6, as another embodiment of the hot air cooling system control system for the bus to perform the cooling divided by the seat according to the present invention, a hot air cooling device 20 for supplying air of a set temperature, and A main duct 21 for transporting air at a temperature set from the warm / cooling device 20, a plurality of individual ducts 22 branched from the main duct 21 for transporting air at a temperature set for each seat, and the The change of the air volume in the main duct 22 which changes according to the air flow amount adjusting part 11 and 12 which controls the opening and closing of the individual duct 22, and the air flow amount adjusting part 11 and 12 is measured in real time. And a controller 30 for determining an operation level of the warm / cooling device 20 according to a change in the air volume measured by the air volume sensor 23.

In this case, the controller 30 increases the operating level of the warm air conditioner 20 when the measured air volume increases, and decreases the operating level of the warm air conditioner 20 when the measured air volume decreases. It is characterized by.

To this end, a warm air cooling device 20 for supplying air at a set temperature according to the present invention, a main duct 21 for transporting air of a set temperature from the warm air cooling device 20, and the main duct 21 A plurality of individual ducts 22 which are branched from each other to transfer the air of a temperature set for each seat, airflow control units 11 and 12 for adjusting the amount of air discharged from the individual ducts 22, and the main duct 21 In a method of controlling a cooling system for a bus for performing hot cooling divided by seats performed in an environment including an air volume sensor 23 capable of measuring a change in the blowing amount in the air, the hot air cooling apparatus 20 is set at a preset blowing amount. ) And a second step of acquiring the airflow change amount in the mail duct 21 using the airflow sensor 13 according to the operation of the airflow control units 11 and 12, and the measurement. To the airflow change Accordingly, it characterized in that it comprises a third step of recovering the actual blowing amount of the air-conditioning device 20 to the predetermined blowing amount in real time.

The present invention will be described in more detail.

FIG. 2 shows the main duct 21 to which air of the temperature set from the hot air conditioner 20 is supplied, and the individual ducts 22 branched from the main duct 21 to supply air to the air vents of the respective seats. . The end of each duct 22 is provided with an air blowing amount adjusting unit 11 to adjust the amount of air supplied into the vehicle.

3 is a view in which a sensor 13 for measuring whether the airflow amount adjusting unit 11 is opened is further added to the airflow amount adjusting unit 11. The sensor 13 can measure whether the airflow amount adjusting unit 11 is open or closed, and can measure the open area.

4 illustrates an input signal line 31 in which the control unit 30 obtains a value measured from the sensor 13 by using wired communication or short-range wireless communication. In addition, the control unit 30 has an output signal line 32 connected to the hot air conditioner 20 so as to control the operation of the hot air conditioner 20.

FIG. 5 shows a state in which a part of the airflow adjusting units 11 and 12 provided in the six individual ducts 22 is opened, for example. This can be distinguished between the open airflow control unit 12 and the closed airflow control unit 11 in the drawings.

Two of the six air flow rate adjusting units 12 are open, and four air volume adjusting units 11 are closed. In this case, since the air conditioner 20 supplies air in accordance with the initial set value, the air is blown harder into two open portions than all six are opened.

In the present invention, through the control unit 20 to adjust the operating level of the warm air conditioner 20 according to the initial situation. However, the main feature of the present invention is to maintain a predetermined blow amount. Therefore, it is a main feature to measure the wind pressure (air volume) in the main duct in real time, and to measure the wind pressure (air volume) in the main duct according to the operation of the air volume control unit 11 to return it to the preset air volume.

In the present specification, the operation level may be a step for each intensity of air blowing amount of the warm / cooling device 20 or a step for each temperature of air supplied. In general, it is difficult to change the temperature of the air supplied from the warm air conditioner, and it is a general step to control the temperature by adjusting the amount of air introduced into the room, which may be an intensity step of the blowing amount. However, the present invention is not necessarily limited thereto, and it is also possible to change the supply temperature of air.

FIG. 6 illustrates the introduction of the air flow rate sensor 23 to the air flow rate in the main duct 21 according to whether the air flow rate adjusting units 11 and 12 are opened or closed. When measuring the airflow amount through the airflow sensor 23, there is an advantage that can predict the number of open airflow control unit (11, 12) without using the sensor (13).

Therefore, the present invention is characterized by maintaining the operating level of the cooling and heating device 20 to always maintain the predetermined air flow rate using the air flow rate sensor (23). The air volume sensor 23 may be an air pressure sensor or the like.

As another embodiment of the present invention, the present invention is a bus air conditioning system control system for performing a hot air cooling divided by seat, a hot air cooling device 20 for supplying air of a set temperature, and the hot air cooling device 20 Main duct 21 for transporting the air of the temperature set from the (), a plurality of individual ducts (22) branched from the main duct 21 to transfer the air of the temperature set for each seat, and the individual duct (22) The air flow rate adjusting units 11 and 12 for controlling the opening and closing of the air conditioner, the sensor 13 measuring whether the individual ducts 22 are opened and closed, and the air flow rate adjusting units 11 and 12 opened from the sensor 13. Receiving the number, characterized in that it comprises a control unit 30 for determining the operating level of the warm air conditioner 20 based on this.

In this case, the sensor 13 is provided so as to measure the open areas of the airflow control units 11 and 12, and the control unit 30 opens the airflow control units 11 and 12 from the sensor 13. It is characterized in that it comprises a control unit 30 receives the area, and determines the operation level of the warm air conditioner 20 based on the total open area.

In particular, the controller 30 increases the operating level of the warm air conditioner 20 when the number of the open increases, and decreases the operating level of the warm air conditioner 20 when the open number decreases. It is characterized by.

In addition, the present invention is a hot-cooling device 20 for supplying air of a set temperature, the main duct 21 for transferring the air of the temperature set from the hot-cooling device 20, and branched from the main duct 21 13, a plurality of individual ducts 22 for transporting air at a temperature set for each seat, and a sensor 13 for measuring whether the airflow amount adjusting units 11 and 12 open or close the air amount discharged from the individual ducts 22. The present invention provides a method for controlling a hot air cooling system for a bus that performs hot air cooling classified by seats performed in an environment including a first step, the first step of operating the hot air cooling device 20 at a preset blowing amount, and the And a second step of detecting a change in the open / close state of the individual ducts 22 from the sensor 13, and a third step of changing the preset air blowing amount in real time according to the change amount of the open / close state of the individual ducts 22. and In this case, the first to third steps may be repeated.

In this case, the sensor 13 is provided to measure the open area of the air flow control unit (11, 12), and the open / close state change amount is the change in the open area of the total air flow control unit (11, 12) It features.

The present invention is not limited to the scope of the embodiments by the above embodiments, all having the technical spirit of the present invention can be seen to fall within the scope of the present invention, the present invention is the scope of the claims by the claims Note that is determined.

11: air volume control unit (closed), 12: air volume control unit (opened)
13: sensor 20: warm air conditioner
21: main duct 22: individual duct
23: air flow sensor
30 control unit 31 input signal line
32: output signal line

Claims (3)

In the cooling and cooling system control system for buses to perform the cooling divided by the seat,
A warm air conditioner 20 for supplying air of a set temperature,
A main duct 21 for transferring air of a temperature set from the warm air conditioner 20,
A plurality of individual ducts 22 which are branched from the main duct 21 and which carry air of a temperature set for each seat;
Air volume control units 11 and 12 for controlling opening and closing of the individual ducts 22;
An air volume sensor 23 for measuring in real time a change in the air volume in the main duct 22 that changes according to the opening and closing amounts of the air volume adjusting units 11 and 12;
It includes a control unit 30 for determining the operating level of the warm air conditioner 20 in accordance with the change in the air flow rate measured from the air flow sensor 23,
Air flow rate real-time control system of bus air conditioner.
The method according to claim 1,
The controller 30 increases the operating level of the warm air conditioner 20 when the measured air volume increases, and decreases the operating level of the warm air conditioner 20 when the measured air volume decreases. doing,
Air flow rate real-time control system of bus air conditioner.
The air conditioner 20 which supplies air of a set temperature, the main duct 21 which conveys air of the temperature set from the said air conditioner 20, and branched from the said main duct 21 set for each seat A plurality of individual ducts 22 for conveying air of temperature, air volume control units 11 and 12 for adjusting the amount of air discharged from the individual ducts 22, and a change in the air volume in the main duct 21 is measured In the method of controlling a cooling system for a bus for performing a cooling of the air divided by the seats performed in an environment including a flow rate sensor 23 that can be,
A first step of operating the warm air conditioner 20 at a preset blowing amount;
A second step of acquiring an airflow change amount in the main duct 21 using the airflow sensor 13 according to operations of the airflow control units 11 and 12;
And a third step of recovering, in real time, the actual blowing amount of the hot / cooling device 20 to the preset blowing amount according to the measured blowing amount change amount.
Air flow rate control method of the air conditioner for buses.

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