JP2015205598A - Vehicular air-conditioning system and control method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular air-conditioning system improved in air conditioning efficiency mainly during cooling and provide a control method for such a vehicular air conditioning system.SOLUTION: A vehicular air-conditioning system includes: an air conditioner 2 for air-conditioning air in a cabin 23 and a transverse flow blower 3 in which a swing shaft sends air from the ceiling 24 to the cabin 23 along the longitudinal direction of a vehicle 21. In a state that a door 29 of the vehicle 29 is opened and the temperature of air in the cabin 23 is higher than the temperature of air outside the vehicle 21 or specific enthalpy of air in the cabin 23 is larger than specific enthalpy of air outside the vehicle 21, the transverse flow blower 3 blows air toward a space on a side where there is the door 29 based on a vertical plane P of the cabin 23.

Description

  The present invention relates to a vehicle air-conditioning system used for passenger railroad vehicles, large buses, and the like, and a control method therefor.

  As a conventional vehicle air conditioning system, there is a vehicle equipped with an air conditioner that sends air cooled or heated from a ceiling to a passenger room with a fan rotation axis along the longitudinal direction of the vehicle. In such a vehicle air conditioning system, for example, when a vehicle door is opened while the air conditioner is performing cooling operation, the air conditioner is controlled to send cooled air to the opened door side. Is done. By being controlled in this way, an air curtain is formed around the open door, and it is possible to suppress the outside air from entering the passenger compartment and increasing the temperature of the passenger compartment air (for example, Patent Document 1, (See Patent Document 2).

JP-A-3-164364 (second page, lower left column, line 16 to page 4, upper left column, second line, FIG. 1) JP-A-5-39032 (paragraph [0006] to paragraph [0017], FIGS. 1 to 5)

  In the conventional vehicle air conditioning system, the air conditioner sends air to the open door side, so that the air around the open door is disturbed, and the intrusion of outside air into the cabin is rather promoted. End up. And when such control is performed when the temperature of the air outside a vehicle is high, an air-conditioning load will increase. That is, such a vehicle air conditioning system has a problem of low air conditioning efficiency.

  The present invention has been made against the background of the above problems, and is intended to obtain a vehicle air conditioning system with improved air conditioning efficiency mainly during cooling. Moreover, the control method of such a vehicle air conditioning system is obtained.

  An air conditioning system for a vehicle according to the present invention includes an air conditioner that air-conditions air in a space inside the vehicle, and a cross-flow blower that has a swing shaft along the longitudinal direction of the vehicle and that sends air from the ceiling to the space inside the vehicle. And control means for controlling the operation of the cross-flow blower, wherein the control means is such that the door of the vehicle is open and the temperature of the air in the space inside the vehicle is air outside the vehicle. In a state where the air enthalpy of the space inside the vehicle is high or the specific enthalpy of the air inside the vehicle is large compared with the specific enthalpy of the air outside the vehicle, Of these, control is performed so that air is blown toward a space on the side where the door is located, with a plane parallel to the height direction of the vehicle and including the swing shaft as a reference.

  An air conditioning system for a vehicle according to the present invention includes an air conditioner that air-conditions air in a space inside the vehicle, and a cross-flow blower that has a swing shaft along the longitudinal direction of the vehicle and that sends air from the ceiling to the space inside the vehicle. And control means for controlling the operation of the cross-flow blower, wherein the control means is such that the door of the vehicle is open and the temperature of the air in the space inside the vehicle is air outside the vehicle. The cross flow blower stops blowing in a state where the temperature is lower than the temperature of the vehicle or the specific enthalpy of the air in the space inside the vehicle is smaller than the specific enthalpy of the air outside the vehicle, or Control is performed so that air is blown in a state in which the amount of blown air is reduced compared to before the door is opened.

  The vehicle air conditioning system according to the present invention is such that the vehicle door is open and the air temperature in the space inside the vehicle is higher than the temperature of the air outside the vehicle, or the air in the space inside the vehicle. In a state where the specific enthalpy of the vehicle is larger than the specific enthalpy of the air outside the vehicle, the cross-flow blower is based on a plane in the space inside the vehicle that is parallel to the vehicle height direction and includes the swing axis. The air is blown toward the space on the side where the open door is located. Therefore, air outside the vehicle having a low temperature or a small specific enthalpy is actively taken into the space inside the vehicle from the door, and air conditioning efficiency is improved.

  In the vehicle air conditioning system according to the present invention, the vehicle door is open and the temperature of the air inside the vehicle is lower than the temperature of the air outside the vehicle, or the space inside the vehicle. In a state where the specific enthalpy of air is small compared to the specific enthalpy of air outside the vehicle, the cross flow blower stops blowing or blows in a state where the flow rate is reduced compared to before the door is opened. To do. Therefore, air outside the vehicle having a high temperature or a large specific enthalpy is prevented from entering the space inside the vehicle from the door, and air conditioning efficiency is improved.

It is a figure for demonstrating the structure of the vehicle air conditioning system which concerns on Embodiment 1. FIG. It is a figure for demonstrating an example of the attachment position of the outdoor temperature sensor of the vehicle air conditioning system which concerns on Embodiment 1. FIG. It is a figure for demonstrating an example of the attachment position of the outdoor temperature sensor of the vehicle air conditioning system which concerns on Embodiment 1. FIG. To describe the operation of the cross-flow blower when the door is open and the temperature of the air in the cabin is higher than the temperature of the air outside the vehicle in the air conditioning system for the vehicle according to Embodiment 1. FIG. In order to describe the operation of the cross flow blower when the door is open and the temperature of the air in the cabin is lower than the temperature of the air outside the vehicle in the vehicle air conditioning system according to the first embodiment. FIG. It is a figure which shows the simulation result of the relationship between the operation | movement of a crossflow fan when the door is open of the air conditioning system for vehicles which concerns on Embodiment 1, and the air exchange amount between a guest room and the vehicle exterior. It is a figure which shows the simulation result of the power consumption reduction amount when the door of the vehicle air-conditioning system which concerns on Embodiment 1 is open. It is a figure for demonstrating the structure of the vehicle air conditioning system which concerns on Embodiment 2. FIG. It is a figure for demonstrating an example of the attachment position of the outdoor humidity sensor of the vehicle air conditioning system which concerns on Embodiment 2. FIG. It is a figure for demonstrating an example of the attachment position of the outdoor humidity sensor of the vehicle air conditioning system which concerns on Embodiment 2. FIG. The operation of the cross flow blower when the door is open and the specific enthalpy of the air in the passenger compartment is larger than the specific enthalpy of the air outside the vehicle in the air conditioning system for the vehicle according to the second embodiment will be described. It is a figure for doing. The operation of the cross-flow blower when the door is open and the specific enthalpy of the air in the cabin is smaller than the specific enthalpy of the air outside the vehicle in the vehicle air-conditioning system according to Embodiment 2 is described. It is a figure for doing. FIG. 12 shows a state in which the door 29 is open. It is a figure which shows the simulation result of the power consumption reduction amount when the door of the vehicle air conditioning system which concerns on Embodiment 2 is open. It is a figure for demonstrating the structure of the vehicle air conditioning system which concerns on Embodiment 3. FIG. The operation of the cross flow blower when the door is open and the specific enthalpy of air in the cabin is larger than the specific enthalpy of air outside the vehicle in the vehicle air-conditioning system according to Embodiment 3 will be described. It is a figure for doing. The operation of the cross-flow blower when the door is open and the specific enthalpy of the air in the cabin is smaller than the specific enthalpy of the air outside the vehicle in the air conditioning system for a vehicle according to Embodiment 3 will be described. It is a figure for doing.

Hereinafter, a vehicle air conditioning system according to the present invention will be described with reference to the drawings.
In the description of the embodiments, the case where the vehicle air conditioning system according to the present invention is a vehicle air conditioning system used in a railway vehicle for passengers is described. However, the vehicle air conditioning system according to the present invention is described. May be a vehicle air conditioning system used for other vehicles, such as a large bus. Moreover, in each figure, the same code | symbol is attached | subjected to the same or similar member or part, or the code | symbol is abbreviate | omitted. Further, the illustration of the fine structure is simplified or omitted as appropriate. In addition, overlapping or similar descriptions are appropriately simplified or omitted.

Embodiment 1 FIG.
The vehicle air conditioning system according to Embodiment 1 will be described below.
(Configuration of vehicle air conditioning system)
The configuration of the vehicle air conditioning system according to Embodiment 1 will be described.
1 is a diagram for explaining a configuration of a vehicle air-conditioning system according to Embodiment 1. FIG. FIG. 1 shows a state where the door 29 is closed.
As shown in FIG. 1, the vehicle air conditioning system 1 includes at least an air conditioner 2, a cross flow fan 3, an indoor temperature sensor 4, an outdoor temperature sensor 5, and a control unit 91.

  The air conditioner 2 is provided on the roof 22 of the vehicle 21. The cross-flow blower 3 is provided on the back side of the ceiling 24 of the passenger cabin 23 of the vehicle 21 and at the approximate center in the width direction of the vehicle 21. Air in the guest room 23 that is air-conditioned by the air conditioner 2 is sucked from the suction port 25. Ducts (not shown) are provided on both sides of the cross flow fan 3, and the air conditioned by the air conditioner 2 is blown out from the outlet 26 to the cabin 23 via the duct (not shown). The inlet 25 and the outlet 26 are provided on the ceiling 24. The guest room 23 corresponds to the “space inside the vehicle” in the present invention.

  The air conditioner 2 performs a cooling operation to air-condition the air in the guest room 23. The air in the guest room 23 is sucked from the suction port 25 as indicated by an arrow 71 (an arrow 71 indicating a suction airflow of the air conditioner). The cooling airflow from the air conditioner 2 is blown out to the passenger room 23 as indicated by an arrow 72 (an arrow 72 indicating a blowout airflow of the air conditioner).

  The cross flow fan 3 is provided such that its swing axis is along the front-rear direction of the vehicle 21, and can swing in the direction of an arrow 81 (an arrow 81 indicating the movement of the cross flow fan), that is, the width direction of the vehicle 21. In addition, an air flow is blown out from the air outlet 27 provided on the ceiling 24 to the cabin 23 as indicated by an arrow 73 (an arrow 73 indicating a blown air flow of a cross flow fan). The air outlet 27 is located at the approximate center in the width direction of the vehicle 21.

  The room temperature sensor 4 is attached in the vicinity of the suction port 25 and detects the temperature of the air in the passenger room 23, that is, the temperature of the suction airflow of the air conditioner 2 sucked from the suction port 25. The indoor temperature sensor 4 is composed of, for example, a thermistor. The room temperature sensor 4 may be provided at other positions where the temperature of the air in the passenger room 23 can be measured, other than the vicinity of the suction port 25. For example, it may be provided near the seat 28. When the indoor temperature sensor 4 is provided in the vicinity of the suction port 25, the indoor temperature sensor 4 can be used for controlling the air conditioning operation of the air conditioner 2. Etc. can be reduced. The room temperature sensor 4 corresponds to the “room temperature measuring means” in the present invention.

  The outdoor temperature sensor 5 detects the temperature of the air outside the vehicle 21. The outdoor temperature sensor 5 is composed of, for example, a thermistor. The outdoor temperature sensor 5 may be provided anywhere as long as it is outside the vehicle 21. For example, it is directly attached to the vehicle 21. In such a case, in general, the outdoor temperature sensor 5 is attached around the air conditioner 2 in order to prevent the signal line and the like from interfering with other devices. The outdoor temperature sensor 5 corresponds to “outdoor temperature measuring means” in the present invention.

2 and 3 are diagrams for explaining an example of an attachment position of an outdoor temperature sensor in the vehicle air conditioning system according to Embodiment 1. FIG.
As shown in FIGS. 2 and 3, inside the air conditioner 2, there are a heat exchanger 41 that exchanges heat between the air outside the vehicle 21 and the refrigerant of the air conditioner 2, and the heat exchanger 41 is connected to the vehicle. An outdoor blower 42 that supplies air outside the motor 21 and a motor 43 that drives the outdoor blower 42 are disposed. The air outside the vehicle 21 is sucked from the suction port 44 as indicated by an arrow 74 (an arrow 74 indicating a sucked air flow of the outdoor fan), and after heat exchange with the heat exchanger 41, an arrow 75 (the blown air flow of the outdoor fan is As shown by an arrow 75), the air is blown out of the vehicle 21 through the air outlet 45.

  As shown in FIG. 2, the outdoor temperature sensor 5 is attached in the vicinity of the suction port 44, whereby the temperature of the air outside the vehicle 21 is detected. Further, the outdoor temperature sensor 5 may be provided at other positions where the temperature of the air outside the vehicle 21 before flowing into the heat exchanger 41 can be measured, other than the vicinity of the suction port 44. For example, as shown in FIG. 3, the air conditioner 2 may be provided inside. Moreover, since the outdoor temperature sensor 5 should just measure the temperature of the air of the exterior of the vehicle 21, it does not need to be attached to all the vehicles 21 of a formation vehicle. For example, the outdoor temperature sensor 5 may be attached to only one or several of the formation vehicles, and information on the temperature of the air outside the vehicle 21 may be shared.

  The indoor temperature sensor 4 and the outdoor temperature sensor 5 may detect the air temperature itself, or may detect other physical quantities that can be converted into the air temperature. That is, the “temperature measurement means” in the present invention may be any means that substantially measures temperature.

  The control unit 91 is provided inside the air conditioner 2, the inside of the vehicle 21, and the like, and controls the operation of the air conditioner 2 based on an operation from an operation unit (not shown) provided in the cab, for example. To do. When the temperature of the air in the cabin 23 is set by the operation unit (not shown), the control unit 91 determines the temperature of the suction airflow of the air conditioner 2 detected by the room temperature sensor 4 as the operation unit (not shown). The air conditioning operation of the air conditioner 2 is controlled so that the temperature set in (1) is reached.

  The control unit 91 is connected to a door opening / closing control unit 92 for controlling the opening / closing operation of the door 29 provided in the cabin 23, and an opening / closing signal of the door 29 of the door opening / closing control unit 92 is input. The door opening / closing control unit 92 is provided in the vehicle 21. The control unit 91 is configured according to the state of the opening / closing operation of the door 29, the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4, and the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5. The air blowing operation of the cross flow fan 3 is controlled.

  The control unit 91 and the door opening / closing control unit 92 may be configured with, for example, a microcomputer, a microprocessor unit, or the like, may be configured with updatable firmware or the like, and may be configured according to a command from the CPU or the like. It may be a program module to be executed. The control unit 91 and the door opening / closing control unit 92 may be combined into one. The control unit 91 corresponds to a “control unit” in the present invention.

(Operation of vehicle air conditioning system)
The operation of the vehicle air conditioning system according to Embodiment 1 will be described.
First, the operation when the vehicle 21 is traveling will be described with reference to FIG.
When the vehicle 21 is traveling, the control unit 91 causes the cross flow blower 3 to perform a transient air blowing operation that blows air while swinging in the width direction of the vehicle 21. By such a transient air blowing operation, the stirring and mixing of the air in the cabin 23 is promoted, and the temperature of the air in the cabin 23 can be made uniform.

  In addition, stirring and mixing of the air of the passenger room 23 are promoted, so that the rocking | fluctuation width of the crossflow fan 3 is large. The swinging width needs to be set according to the form of the passenger compartment 23 and the like, but is usually within a range of ± 40 degrees around the vertical plane P passing through the vehicle center. The vertical plane P corresponds to “a plane parallel to the height direction of the vehicle and including the swing axis” in the present invention.

Next, the operation when the vehicle 21 stops at the station and the door 29 is opened will be described with reference to FIGS. 4 and 5.
Based on the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4 and the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5, the controller 91 determines the temperature of the air in the cabin 23. Then, it is determined whether the temperature is higher or lower than the temperature of the air outside the vehicle 21.

  The temperature of the air in the guest room 23 measured by the indoor temperature sensor 4 may be compared with the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5, and may be measured by the indoor temperature sensor 4. Another physical quantity corresponding to the temperature of the air in the cabin 23 may be compared with another physical quantity corresponding to the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5.

FIG. 4 shows the operation of the cross flow blower when the door is open and the temperature of the air in the cabin is higher than the temperature of the air outside the vehicle in the vehicle air conditioning system according to the first embodiment. It is a figure for demonstrating. FIG. 4 shows a state where the door 29 is open.
As shown in FIG. 4, when the temperature of the air in the passenger compartment 23 is higher than the temperature of the air outside the vehicle 21, the control unit 91 outputs a signal for opening the door 29 from the door opening / closing control unit 92. When the input is made, the cross flow fan 3 is swung in a state where the cross flow fan 3 faces the door 29 side, that is, the space on the side where the open door 29 with respect to the vertical plane P in the cabin 23 is provided. The cross flow blower 3 is blown to stop. By operating in such a manner, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 increases as indicated by an arrow 76 (an arrow 76 indicating an air flow traveling between the cabin and the outside of the vehicle).

  At that time, the controller 91 may increase the amount of air blown by the cross flow blower 3. Further, the angle of the cross flow fan 3 with respect to the vertical plane P in the air blowing direction may be any number as long as the cross flow fan 3 faces the door 29 side. Is generally 20 degrees to 40 degrees.

  When the passenger boarding / exiting is completed and the door 29 is closed, a closing signal for the door 29 is input to the control unit 91 from the door opening / closing control unit 92. When the closing signal of the door 29 is input from the door opening / closing control unit 92, the control unit 91 returns the blowing operation of the cross flow blower 3 to the normal state.

FIG. 5 shows the operation of the cross-flow blower when the door is open and the temperature of the air in the cabin is lower than the temperature of the air outside the vehicle in the air conditioning system for the vehicle according to the first embodiment. It is a figure for demonstrating. FIG. 5 shows a state in which the door 29 is open.
As shown in FIG. 5, when the temperature of the air in the passenger compartment 23 is lower than the temperature of the air outside the vehicle 21, the control unit 91 outputs a signal for opening the door 29 from the door opening / closing control unit 92. When input, the blower of the cross flow blower 3 is stopped. By operating in such a manner, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 is reduced as indicated by an arrow 76 (an arrow 76 indicating an air flow traveling between the cabin and the outside of the vehicle).

  At that time, the control unit 91 may continue the swing of the cross flow fan 3, but normally stops the swing. Moreover, the control part 91 does not need to stop the ventilation of the crossflow fan 3 completely. That is, the controller 91 may reduce the amount of air blown by the cross flow blower 3 as compared with that before the door 29 is opened, and continue the air blowing and swinging. In such a case, the control part 91 is good to make the ventilation volume of the cross flow blower 3 into half or less compared with before the door 29 opens. When the control unit 91 stops the blowing of the cross flow fan 3, the effect is maximized. On the other hand, when the controller 91 does not completely stop the blowing of the cross flow fan 3, it is suppressed that the comfort of the cabin 23 is deteriorated.

  When the passenger boarding / exiting is completed and the door 29 is closed, a closing signal for the door 29 is input to the control unit 91 from the door opening / closing control unit 92. When the closing signal of the door 29 is input from the door opening / closing control unit 92, the control unit 91 returns the blowing operation of the cross flow blower 3 to the normal state.

  In the above description, whether the temperature of the air in the passenger compartment 23 is higher or lower than the temperature of the air outside the vehicle 21 is determined based on the temperature of the air in the passenger compartment 23 measured by the indoor temperature sensor 4 and the outdoor temperature. Although the case where it carries out based on the temperature of the air outside the vehicle 21 measured by the temperature sensor 5 is described, the temperature of the air in the cabin 23 obtained by other means, or by other means You may perform based on the temperature of the air outside the acquired vehicle 21. FIG. For example, the temperature of the air in the cabin 23 may be estimated from the temperature of the air outside the vehicle 21 and past results. Further, the temperature of the air outside the vehicle 21 may be estimated from information such as a weather forecast. Whether the temperature of the air in the passenger compartment 23 is higher or lower than the temperature of the air outside the vehicle 21 is determined by the temperature of the air in the passenger compartment 23 measured by the indoor temperature sensor 4 and the outdoor temperature sensor 5. When the determination is made based on the temperature of the air outside the vehicle 21 that has been made, the accuracy of the determination is improved.

  Moreover, although the control part 91 has demonstrated above the case where the temperature of the air of the passenger room 23 discriminate | determines whether it is higher or lower than the temperature of the air outside the vehicle 21, the control part 91 is It may be determined whether the temperature of the air in the cabin 23 is higher or lower than a preset reference value compared to the temperature of the air outside the vehicle 21. When the temperature of the air in the passenger compartment 23 is neither higher or lower than a preset reference value compared to the temperature of the air outside the vehicle 21, the control unit 91 sends air from the cross flow fan 3. The operation may be continued in a normal state, and the blowing and swinging of the cross flow fan 3 may be stopped. In other words, the “magnitude relationship” in the present invention includes, in addition to the relationship between large and small, other relationships that are based on the magnitude of two values, such as a relationship that is larger or smaller than a reference value.

(Operation of air conditioning system for vehicles)
The operation of the vehicle air conditioning system according to Embodiment 1 will be described.
FIG. 6 is a diagram showing a simulation result of the relationship between the operation of the cross-flow blower and the amount of air exchange between the passenger cabin and the outside of the vehicle when the door is open, in the vehicle air conditioning system according to the first embodiment. It is. In FIG. 6, the air exchange amount when the cross flow fan 3 continues to blow and swing is indicated by a left bar, and the cross flow fan 3 is an open door with the vertical plane P of the cabin 23 as a reference. The amount of air exchange when the air is blown toward the space on the side where 29 is present is indicated by a central bar, and the amount of air exchange when the cross flow blower 3 stops air blowing is indicated by a right bar. In FIG. 6, the air exchange amount when the cross flow blower 3 continues to blow and swing is set to 1. Moreover, the bar | burr of the center in FIG. 6 is an air exchange amount in case the angle with respect to the vertical surface P of the ventilation direction of the crossflow fan 3 is 40 degree | times.

  In the vehicle air-conditioning system 1, the cross-flow blower 3 operates in a state where the door 29 of the vehicle 21 is open and the temperature of the air in the cabin 23 is higher than the temperature of the air outside the vehicle 21. The air is blown toward the space on the side where the open door 29 is present with reference to the vertical plane P of 23. Therefore, as shown in FIG. 6, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 increases, and the air outside the vehicle 21 having a low temperature is actively taken into the cabin 23 from the door 29. Thus, the cooling load is reduced, and the air conditioning efficiency of the vehicle air conditioning system 1 is improved.

  Further, in the vehicle air conditioning system 1, the cross flow blower 3 is configured so that the door 29 of the vehicle 21 is open and the temperature of the air in the cabin 23 is lower than the temperature of the air outside the vehicle 21. The air is blown in a state where the air flow is stopped or the amount of air blown is reduced compared to before the door 29 is opened. Therefore, as shown in FIG. 6, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 is reduced, and air outside the vehicle 21 having a high temperature is prevented from entering the cabin 23 from the door 29. Thus, the cooling load is reduced and the air conditioning efficiency is improved.

  FIG. 7 is a diagram illustrating a simulation result of the power consumption reduction amount when the door is open in the vehicle air conditioning system according to Embodiment 1. In FIG. 7, the cross-flow blower 3 continues to blow and swing in both the state where the temperature of the air in the cabin 23 is higher than the temperature of the air outside the vehicle 21 and the state where it is lower. The amount of reduction with respect to the power consumption in this case is indicated by the length of the bar. Further, in FIG. 7, as a comparative example, the cross flow blower 3 stops air blowing in both a state where the temperature of the air in the passenger room 23 is higher than a temperature of the air outside the vehicle 21 and a state where the temperature is low. The amount of power consumption reduction is shown by the left bar. Further, in FIG. 7, when the air temperature in the passenger compartment 23 is higher than the temperature of the air outside the vehicle 21, the cross flow blower 3 is opened with the vertical plane P in the passenger compartment 23 as a reference. The power consumption is reduced when the cross flow blower 3 stops air blowing in a state where the air is blown toward the space on the side of the vehicle 29 and the temperature of the air in the passenger compartment 23 is lower than the temperature of the air outside the vehicle 21. The amount, that is, the amount of power consumption reduction of the vehicle air-conditioning system according to Embodiment 1 is indicated by the right bar. Further, the bar on the right side in FIG. 7 indicates that the angle with respect to the vertical plane P in the blowing direction of the cross flow fan 3 is 40 when the temperature of the air in the cabin 23 is higher than the temperature of the air outside the vehicle 21. It is the amount of power consumption reduction when it is a degree.

  That is, when the temperature of the air in the cabin 23 is higher than the temperature of the air outside the vehicle 21 and in a low state, as in the comparative example, the cross flow blower 3 stops air blowing. However, in the vehicle air conditioning system 1, the airflow in the passenger compartment 23 is higher than the temperature of the air outside the vehicle 21. When the blower 3 blows air toward the space on the side where the open door 29 with respect to the vertical plane P of the cabin 23 is provided, the power consumption reduction amount is about 1.4%. That is, in the vehicle air conditioning system 1, the air conditioning efficiency is greatly improved.

Embodiment 2. FIG.
The vehicle air conditioning system according to Embodiment 2 will be described below.
In addition, the description which overlaps or is similar to the vehicle air conditioning system which concerns on Embodiment 1 is simplified or abbreviate | omitted suitably.
In the vehicle air conditioning system according to Embodiment 1, the magnitude relationship between the temperature of the air in the cabin 23 and the temperature of the air outside the vehicle 21 is determined, but the air conditioning load of the air conditioner 2 is only the temperature. Instead, it is determined by humidity. The vehicle air-conditioning system according to Embodiment 2 further improves the air-conditioning efficiency of the vehicle air-conditioning system 1 by performing a determination that takes into account the humidity of the air in the cabin 23 and the humidity of the air outside the vehicle 21. Is.

(Configuration of vehicle air conditioning system)
The configuration of the vehicle air conditioning system according to Embodiment 2 will be described.
FIG. 8 is a diagram for explaining the configuration of the vehicle air conditioning system according to the second embodiment. FIG. 8 shows a state where the door 29 is closed.
As shown in FIG. 8, the vehicle air conditioning system 1 includes an air conditioner 2, a cross flow fan 3, an indoor temperature sensor 4, an outdoor temperature sensor 5, an indoor humidity sensor 6, and an outdoor humidity sensor 7. And at least a control unit 91.

  The indoor humidity sensor 6 is attached in the vicinity of the suction port 25 and detects the humidity of the air in the cabin 23, that is, the humidity of the suction airflow of the air conditioner 2 sucked from the suction port 25. The indoor humidity sensor 6 is, for example, one based on a change in electrical resistance in moisture adsorption / desorption, one based on expansion / contraction of an object, one based on a thermodynamic principle, and any type of sensor is used. Good. The indoor humidity sensor 6 may be provided at other positions where the humidity of the air in the passenger room 23 can be measured, other than the vicinity of the air inlet 25. For example, it may be provided near the seat 28. When the indoor humidity sensor 6 is provided in the vicinity of the suction port 25, the indoor humidity sensor 6 can be used for controlling the air conditioning operation of the air conditioner 2. Etc. can be reduced. The indoor humidity sensor 6 corresponds to “indoor humidity measuring means” in the present invention.

  The outdoor humidity sensor 7 detects the humidity of the air outside the vehicle 21. The outdoor humidity sensor 7 is, for example, one based on a change in electrical resistance in moisture adsorption / desorption, one based on expansion / contraction of an object, one based on a thermodynamic principle, and any type of sensor is used. Good. The outdoor humidity sensor 7 may be provided anywhere as long as it is outside the vehicle 21. For example, it is directly attached to the vehicle 21. In such a case, in general, the outdoor humidity sensor 7 is attached around the air conditioner 2 in order to prevent the signal line and the like from interfering with other devices. The outdoor humidity sensor 7 corresponds to “outdoor humidity measuring means” in the present invention.

9 and 10 are diagrams for explaining an example of an attachment position of the outdoor humidity sensor in the vehicle air conditioning system according to Embodiment 2. FIG.
As shown in FIG. 9, the outdoor humidity sensor 7 is attached in the vicinity of the suction port 44, whereby the humidity of the air outside the vehicle 21 is detected. Moreover, the outdoor humidity sensor 7 may be provided at other positions where the humidity of the air outside the vehicle 21 before flowing into the heat exchanger 41 can be measured, other than the vicinity of the suction port 44. For example, as shown in FIG. 10, the air conditioner 2 may be provided inside. Moreover, since the outdoor humidity sensor 7 should just measure the humidity of the air outside the vehicle 21, it does not need to be attached to all the vehicles 21 of a formation vehicle. For example, the outdoor humidity sensor 7 may be attached to only one or several of the trained vehicles, and information on the humidity of the air outside the vehicle 21 may be shared.

  The indoor humidity sensor 6 and the outdoor humidity sensor 7 may detect the humidity of the air itself, or may detect other physical quantities that can be converted into the humidity of the air. That is, the “humidity measuring means” in the present invention may be any means that substantially measures humidity.

  The control unit 91 is provided inside the air conditioner 2, the inside of the vehicle 21, and the like, and controls the operation of the air conditioner 2 based on an operation from an operation unit (not shown) provided in the cab, for example. To do. When the humidity of the air in the cabin 23 is set by the operation unit (not shown), the control unit 91 determines the humidity of the suction airflow of the air conditioner 2 detected by the indoor humidity sensor 6 as the operation unit (not shown). The air conditioning operation of the air conditioner 2 is controlled so that the humidity set in step 1) is reached.

  The control unit 91 is connected to a door opening / closing control unit 92 for controlling the opening / closing operation of the door 29 provided in the cabin 23, and an opening / closing signal of the door 29 of the door opening / closing control unit 92 is input. The door opening / closing control unit 92 is provided in the vehicle 21. The controller 91 controls the state of the opening / closing operation of the door 29, the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4, the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5, and the indoor humidity sensor 6. The air blowing operation of the cross flow blower 3 is controlled according to the measured humidity of the air in the cabin 23 and the humidity of the air outside the vehicle 21 measured by the outdoor humidity sensor 7.

(Operation of vehicle air conditioning system)
The operation of the vehicle air conditioning system according to Embodiment 2 will be described.
First, the operation when the vehicle 21 is traveling will be described with reference to FIG.
Similar to the vehicle air conditioning system according to the first embodiment, when the vehicle 21 is traveling, the control unit 91 blows air to the cross flow blower 3 while swinging in the width direction of the vehicle 21. A transitional air blowing operation is performed.

Next, the operation when the vehicle 21 stops at the station and the door 29 is opened will be described with reference to FIGS. 11 and 12.
The controller 91 controls the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4, the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5, and the temperature of the cabin 23 measured by the indoor humidity sensor 6. Based on the humidity of the air and the humidity of the air outside the vehicle 21 measured by the outdoor humidity sensor 7, the specific enthalpy of the air in the cabin 23 is larger than the specific enthalpy of the air outside the vehicle 21. Or small. In addition, specific enthalpy is enthalpy per unit mass.

Specifically, the controller 91 first determines the air in the guest room 23 from the temperature of the air in the guest room 23 measured by the indoor temperature sensor 4 and the air humidity in the guest room 23 measured by the indoor humidity sensor 6. Specific enthalpy h _i of the vehicle 21 and the outside air temperature of the vehicle 21 measured by the outdoor temperature sensor 5 and the outside air humidity of the vehicle 21 measured by the outdoor humidity sensor 7. The specific enthalpy h _o of the air is determined.

The enthalpy of air is the sum of the enthalpy of dry air and the enthalpy of water vapor, that is, the sum of sensible heat and latent heat of air. That is, the specific enthalpy h _a of the dry air at the temperature t ° C. is expressed by the following formula 1 when the specific heat of the air is C _p and the dry air at 0 ° C. is used as a reference, and the temperature t ° C. and the absolute humidity x table specific enthalpy h _v of steam, a constant pressure specific heat of water vapor and C _v, when referenced to 0 ℃ water, since the formula 2 below, specific enthalpy h of air, by equation 3 below Is done. R is the latent heat of vaporization of water vapor at 0 ° C. The absolute humidity x is obtained from the temperature and humidity measured by the temperature sensors (indoor temperature sensor 4, outdoor temperature sensor 5) and humidity sensors (indoor humidity sensor 6, outdoor humidity sensor 7).

Then, the control unit 91 obtains the temperature of the air in the guest room 23 measured by the room temperature sensor 4 and the humidity of the air in the guest room 23 measured by the indoor humidity sensor 6 by substituting them into Equations 1 to 3. Further, the specific enthalpy h _i of the air in the guest room 23 represents the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5 and the humidity of the air outside the vehicle 21 measured by the outdoor humidity sensor 7. It was determined by substituting the equations (1) 3, as compared to the specific enthalpy h _o of the air outside the vehicle 21, to determine whether high or low.

That is, the control unit 91 obtains a specific enthalpy difference Δh, which is a difference between the specific enthalpy h _o of the air outside the vehicle 21 and the specific enthalpy h _i of the air in the passenger room 23 using the following Equation 4. It is determined whether the specific enthalpy difference Δh is negative (Δh <0) or positive (Δh> 0). When it is determined that the specific enthalpy difference Δh is negative (Δh <0), the specific enthalpy h _i of the air in the passenger compartment 23 is higher than the specific enthalpy h _o of the air outside the vehicle 21. That is, it can be determined that the air in the cabin 23 is in a thermally high state as compared with the air outside the vehicle 21. Also, the specific enthalpy difference Delta] h is, if it is determined that positive (Δh> 0), the specific enthalpy h _i of the air rooms 23, compared to the specific enthalpy h _o of air outside the vehicle 21 It can be determined that the air is low, that is, the air in the passenger compartment 23 is thermally lower than the air outside the vehicle 21.

The specific enthalpy h _i of the air in the guest room 23 and the specific enthalpy h _o of the air outside the vehicle 21 may be compared, and other physical quantities corresponding to the specific enthalpy h _i of the air in the guest room 23; and other physical quantity corresponding to the specific enthalpy h _o of the air outside the vehicle 21 may be a comparison.

FIG. 11 is a cross-flow blower when the door is open and the specific enthalpy of air in the cabin is larger than the specific enthalpy of air outside the vehicle in the air conditioning system for a vehicle according to the second embodiment. It is a figure for demonstrating operation | movement of. FIG. 11 shows a state where the door 29 is open.
As shown in FIG. 11, when the specific enthalpy of air in the cabin 23 is larger than the specific enthalpy of air outside the vehicle 21, the control unit 91 opens the door 29 from the door opening / closing control unit 92. When a signal is input, the cross flow blower 3 is swung in a state where the cross flow blower 3 faces the door 29 side, that is, the side of the cabin 23 having the open door 29 with respect to the vertical plane P. The cross flow blower 3 blows air in the state of facing the space. By operating in such a manner, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 increases as indicated by an arrow 76 (an arrow 76 indicating an air flow traveling between the cabin and the outside of the vehicle).

  At that time, the controller 91 may increase the amount of air blown by the cross flow blower 3. Further, the angle of the cross flow fan 3 with respect to the vertical plane P in the air blowing direction may be any number as long as the cross flow fan 3 faces the door 29 side. Is generally 20 degrees to 40 degrees.

  When the passenger boarding / exiting is completed and the door 29 is closed, a closing signal for the door 29 is input to the control unit 91 from the door opening / closing control unit 92. When the closing signal of the door 29 is input from the door opening / closing control unit 92, the control unit 91 returns the blowing operation of the cross flow blower 3 to the normal state.

FIG. 12 is a cross-flow blower when the door is open and the specific enthalpy of air in the passenger compartment is smaller than the specific enthalpy of air outside the vehicle in the air conditioning system for a vehicle according to the second embodiment. It is a figure for demonstrating operation | movement of. FIG. 12 shows a state in which the door 29 is open.
As shown in FIG. 12, when the specific enthalpy of air in the cabin 23 is smaller than the specific enthalpy of air outside the vehicle 21, the control unit 91 opens the door 29 from the door opening / closing control unit 92. When the signal is input, the blowing of the cross flow fan 3 is stopped. By operating in such a manner, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 is reduced as indicated by an arrow 76 (an arrow 76 indicating an air flow traveling between the cabin and the outside of the vehicle).

  At that time, the control unit 91 may continue the swing of the cross flow fan 3, but normally stops the swing. Moreover, the control part 91 does not need to stop the ventilation of the crossflow fan 3 completely. That is, the controller 91 may reduce the amount of air blown by the cross flow blower 3 as compared with that before the door 29 is opened, and continue the air blowing and swinging. In such a case, the control part 91 is good to make the ventilation volume of the cross flow blower 3 into half or less compared with before the door 29 opens. When the control unit 91 stops the blowing of the cross flow fan 3, the effect is maximized. On the other hand, when the controller 91 does not completely stop the blowing of the cross flow fan 3, it is suppressed that the comfort of the cabin 23 is deteriorated.

  When the passenger boarding / exiting is completed and the door 29 is closed, a closing signal for the door 29 is input to the control unit 91 from the door opening / closing control unit 92. When the closing signal of the door 29 is input from the door opening / closing control unit 92, the control unit 91 returns the blowing operation of the cross flow blower 3 to the normal state.

  In the above description, a case has been described in which the control unit 91 determines whether the specific enthalpy of air in the passenger compartment 23 is larger or smaller than the specific enthalpy of air outside the vehicle 21. However, it may be determined whether the specific enthalpy of air in the cabin 23 is larger or smaller than a preset reference value compared to the specific enthalpy of air outside the vehicle 21. When the specific enthalpy of the air in the cabin 23 is neither greater than or smaller than a predetermined reference value compared to the specific enthalpy of the air outside the vehicle 21, the control unit 91 performs the cross flow blower 3. The air blowing operation may be continued in a normal state, and the air blowing and swinging of the cross flow fan 3 may be stopped. In other words, the “magnitude relationship” in the present invention includes, in addition to the relationship between large and small, other relationships that are based on the magnitude of two values, such as a relationship that is larger or smaller than a reference value.

(Operation of air conditioning system for vehicles)
The operation of the vehicle air conditioning system according to Embodiment 2 will be described.
In the vehicle air-conditioning system 1, the cross flow blower 3 is in a state where the door 29 of the vehicle 21 is open and the specific enthalpy of air in the passenger compartment 23 is larger than the specific enthalpy of air outside the vehicle 21. Then, the air is blown toward the space on the side where the open door 29 is present with respect to the vertical plane P of the cabin 23. Therefore, as shown in FIG. 6, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 increases, and the air outside the vehicle 21 in a state where the specific enthalpy is small, that is, thermally low, is Therefore, the cooling load is reduced, and the air conditioning efficiency of the vehicle air conditioning system 1 is improved.

  Further, in the vehicle air-conditioning system 1, the cross flow blower is provided in a state where the door 29 of the vehicle 21 is open and the specific enthalpy of the air in the cabin 23 is smaller than the specific enthalpy of the air outside the vehicle 21. 3 stops the air blowing or blows the air in a state where the air blowing amount is reduced as compared to before the door 29 is opened. Therefore, as shown in FIG. 6, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 is reduced, and the air outside the vehicle 21 in a state where the specific enthalpy is large, that is, thermally high, is From entering the cabin 23 is suppressed, the cooling load is reduced, and the air conditioning efficiency is improved.

  FIG. 13 is a diagram illustrating a simulation result of the power consumption reduction amount when the door is open in the vehicle air conditioning system according to the second embodiment. In FIG. 13, the cross flow blower 3 blows and oscillates even when the specific enthalpy of the air in the passenger compartment 23 is larger or smaller than the specific enthalpy of the air outside the vehicle 21. The amount of reduction relative to the amount of power consumption when continuing is shown by the length of the bar. In FIG. 13, as a comparative example, the cross flow blower 3 blows air both in the state where the specific enthalpy of the air in the cabin 23 is larger and smaller than the specific enthalpy of the air outside the vehicle 21. The amount of power consumption when stopping is indicated by the left bar. In FIG. 13, the cross flow blower 3 is opened with the vertical plane P of the cabin 23 as a reference when the specific enthalpy of air in the passenger compartment 23 is larger than the specific enthalpy of air outside the vehicle 21. The cross flow blower 3 stops air blowing in a state where the specific enthalpy of air in the passenger compartment 23 is smaller than the specific enthalpy of air outside the vehicle 21. The amount of power consumption reduction, that is, the amount of power consumption reduction of the vehicle air-conditioning system according to Embodiment 2 is indicated by a bar on the right side. Further, the bar on the right side in FIG. 13 indicates that the angle of the air flow direction of the cross flow blower 3 with respect to the vertical plane P in a state where the specific enthalpy of the air in the cabin 23 is larger than the specific enthalpy of the air outside the vehicle 21. , The amount of power consumption reduction in the case of 40 degrees.

  That is, as in the comparative example, the cross flow blower 3 stops blowing air in any state where the specific enthalpy of the air in the passenger compartment 23 is larger or smaller than the specific enthalpy of the air outside the vehicle 21. In this case, the power consumption reduction amount is about 1.3%, but in the vehicle air conditioning system 1, the specific enthalpy of the air in the cabin 23 is larger than the specific enthalpy of the air outside the vehicle 21. , The cross flow blower 3 blows air toward the space on the side where the open door 29 with respect to the vertical plane P of the guest room 23 is provided, so that the power consumption reduction amount is about 3.6%. That is, in the vehicle air conditioning system 1, the air conditioning efficiency is greatly improved.

  Further, in the vehicle air conditioning system according to Embodiment 2, the magnitude relationship between the specific enthalpy of the air in the cabin 23 and the specific enthalpy of the air outside the vehicle 21 is determined, that is, the humidity of the air in the cabin 23 Therefore, the air conditioning efficiency is further improved as compared with the vehicle air conditioning system according to the first embodiment.

Embodiment 3 FIG.
The vehicle air conditioning system according to Embodiment 3 will be described below.
In addition, the description which overlaps or resembles the vehicle air conditioning system which concerns on Embodiment 1 and Embodiment 2 is simplified or abbreviate | omitted suitably.
In the vehicle air conditioning system according to Embodiment 2, the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5 and the humidity of the air outside the vehicle 21 measured by the outdoor humidity sensor 7 are: used, seeking specific enthalpy h _o of the air outside the vehicle 21. Vehicle air conditioner according to the third embodiment, without using an external humidity of the air of the vehicle 21 measured by the outdoor humidity sensor 7, by obtaining the specific enthalpy h _o of the air outside the vehicle 21, the vehicle This simplifies the configuration of the air conditioning system 1.

(Configuration of vehicle air conditioning system)
The configuration of the vehicle air conditioning system according to Embodiment 3 will be described.
FIG. 14 is a diagram for explaining a configuration of a vehicle air-conditioning system according to Embodiment 3. FIG. 14 shows a state where the door 29 is closed.
As shown in FIG. 14, the vehicle air conditioning system 1 includes an air conditioner 2, a cross flow blower 3, an indoor temperature sensor 4, an outdoor temperature sensor 5, an indoor humidity sensor 6, a control unit 91, At least.

  The control unit 91 is connected to a door opening / closing control unit 92 for controlling the opening / closing operation of the door 29 provided in the cabin 23, and an opening / closing signal of the door 29 of the door opening / closing control unit 92 is input. The door opening / closing control unit 92 is provided in the vehicle 21. The control unit 91 opens / closes the door 29, the air temperature in the passenger compartment 23 measured by the indoor temperature sensor 4, the air temperature outside the vehicle 21 measured by the outdoor temperature sensor 5, and the indoor humidity sensor. 6 controls the air blowing operation of the cross flow blower 3 in accordance with the humidity of the air in the passenger compartment 23 measured by 6.

(Operation of vehicle air conditioning system)
The operation of the vehicle air conditioning system according to Embodiment 3 will be described.
First, the operation when the vehicle 21 is traveling will be described with reference to FIG.
Similarly to the vehicle air conditioning system according to the second embodiment, when the vehicle 21 is traveling, the control unit 91 blows air to the cross flow blower 3 while swinging in the width direction of the vehicle 21. A transitional air blowing operation is performed.

Next, the operation when the vehicle 21 stops at the station and the door 29 is opened will be described with reference to FIGS. 15 and 16.
The controller 91 controls the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4, the temperature of the air outside the vehicle 21 measured by the outdoor temperature sensor 5, and the temperature of the cabin 23 measured by the indoor humidity sensor 6. Whether the specific enthalpy of the air in the guest room 23 is larger than the specific enthalpy of the air outside the vehicle 21 based on the humidity of the air and the humidity of the air in the guest room 23 measured in advance by the indoor humidity sensor 6. Determine if it is small.

That is, the vehicle in the vehicle air conditioner according to the second embodiment, the absolute humidity x for determining the specific enthalpy h _o of the air outside the vehicle 21, when the door 29 is opened, which is measured by the outdoor temperature sensor 5 21 is obtained from the temperature of the air outside the vehicle 21 and the humidity of the air outside the vehicle 21 measured by the outdoor humidity sensor 7. The absolute humidity of the air in the cabin 23 varies greatly with time depending on the amount of moisture released due to passenger sweat, breathing, and the like. This variation becomes more remarkable as the number of passengers getting on and off increases. On the other hand, the absolute humidity of the air outside the vehicle 21 varies less with time than the absolute humidity of the air in the cabin 23. Therefore, in the vehicle air conditioning system according to the third embodiment, the absolute humidity x of the air outside the vehicle 21 when the door 29 is opened is acquired in advance, for example, before the operation of the air conditioner 2 or the like. , using the absolute humidity _{x 0.}

Specifically, before the operation of the air conditioner 2, for example, before the morning vehicle 21 departs from the garage, the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4 and the indoor humidity sensor 6 were measured. and humidity of the air of the room 23, the absolute humidity x ₀ with finding. Before the operation of the air conditioner 2, for example, before the morning vehicle 21 departs from the garage, the passenger 23 is not in the cabin 23 and the vehicle 21 is left at night. The temperature of the air outside the vehicle is the same value, and the humidity of the air in the cabin 23 and the humidity of the air outside the vehicle 21 can be regarded as the same value. That is, the control unit 91 uses the temperature of the air in the cabin 23 measured by the indoor temperature sensor 4 and the humidity of the air in the cabin 23 measured by the indoor humidity sensor 6 to control the air outside the vehicle 21. absolutely can ask humidity x _0, this value can be assumed for example throughout the day, which does not change with.

When the door 29 is opened, the control unit 91 calculates the air temperature of the guest room 23 obtained from the air temperature of the guest room 23 measured by the indoor temperature sensor 4 and the air humidity of the guest room 23 measured by the indoor humidity sensor 6. By substituting the absolute humidity x of the air into Equation 2, the specific enthalpy h _i of the air in the cabin 23 is obtained. Further, the absolute humidity x ₀ acquired in advance as an absolute humidity x, are substituted into Equation 2 to determine the specific enthalpy h _o of the air outside the vehicle 21 when the door 29 is opened. Then, similarly to the vehicle air conditioning system according to the second embodiment, it is determined whether the specific enthalpy h _i of the air in the cabin 23 is larger or smaller than the specific enthalpy h _o of the air outside the vehicle 21.

FIG. 15 is a cross-flow blower when the door is open and the specific enthalpy of air in the cabin is larger than the specific enthalpy of air outside the vehicle in the air conditioning system for a vehicle according to the third embodiment. It is a figure for demonstrating operation | movement of. FIG. 15 shows a state where the door 29 is open.
As shown in FIG. 15, when the specific enthalpy of air in the passenger compartment 23 is larger than the specific enthalpy of air outside the vehicle 21, the control unit 91 opens the door 29 from the door opening / closing control unit 92. When a signal is input, the cross flow blower 3 is swung in a state where the cross flow blower 3 faces the door 29 side, that is, the side of the cabin 23 having the open door 29 with respect to the vertical plane P. The cross flow blower 3 blows air in the state of facing the space. By operating in such a manner, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 increases as indicated by an arrow 76 (an arrow 76 indicating an air flow traveling between the cabin and the outside of the vehicle).

  At that time, the controller 91 may increase the amount of air blown by the cross flow blower 3. Further, the angle of the cross flow fan 3 with respect to the vertical plane P in the air blowing direction may be any number as long as the cross flow fan 3 faces the door 29 side. Is generally 20 degrees to 40 degrees.

  When the passenger boarding / exiting is completed and the door 29 is closed, a closing signal for the door 29 is input to the control unit 91 from the door opening / closing control unit 92. When the closing signal of the door 29 is input from the door opening / closing control unit 92, the control unit 91 returns the blowing operation of the cross flow blower 3 to the normal state.

FIG. 16 is a cross-flow blower in the vehicle air-conditioning system according to the third embodiment when the door is open and the specific enthalpy of air in the cabin is smaller than the specific enthalpy of air outside the vehicle. It is a figure for demonstrating operation | movement of. FIG. 16 shows a state in which the door 29 is open.
As shown in FIG. 16, when the specific enthalpy of air in the passenger compartment 23 is smaller than the specific enthalpy of air outside the vehicle 21, the control unit 91 opens the door 29 from the door opening / closing control unit 92. When the signal is input, the blowing of the cross flow fan 3 is stopped. By operating in such a manner, the amount of air exchange between the cabin 23 and the outside of the vehicle 21 is reduced as indicated by an arrow 76 (an arrow 76 indicating an air flow traveling between the cabin and the outside of the vehicle).

  At that time, the control unit 91 may continue the swing of the cross flow fan 3, but normally stops the swing. Moreover, the control part 91 does not need to stop the ventilation of the crossflow fan 3 completely. That is, the controller 91 may reduce the amount of air blown by the cross flow blower 3 as compared with that before the door 29 is opened, and continue the air blowing and swinging. In such a case, the control part 91 is good to make the ventilation volume of the cross flow blower 3 into half or less compared with before the door 29 opens. When the control unit 91 stops the blowing of the cross flow fan 3, the effect is maximized. On the other hand, when the controller 91 does not completely stop the blowing of the cross flow fan 3, it is suppressed that the comfort of the cabin 23 is deteriorated.

  When the passenger boarding / exiting is completed and the door 29 is closed, a closing signal for the door 29 is input to the control unit 91 from the door opening / closing control unit 92. When the closing signal of the door 29 is input from the door opening / closing control unit 92, the control unit 91 returns the blowing operation of the cross flow blower 3 to the normal state.

(Operation of air conditioning system for vehicles)
The operation of the vehicle air conditioning system according to Embodiment 3 will be described.
In the vehicle air conditioning system according to the third embodiment, as in the vehicle air conditioning system according to the second embodiment, there is a magnitude relationship between the specific enthalpy of air in the cabin 23 and the specific enthalpy of air outside the vehicle 21. In other words, since the determination is made in consideration of the humidity of the air in the cabin 23 and the humidity of the air outside the vehicle 21, the air conditioning efficiency is higher than that in the vehicle air conditioning system according to the first embodiment. Further improvement.

The vehicle air conditioner according to the third embodiment, it is possible to without the humidity of the air outside the vehicle 21 measured by the outdoor humidity sensor 7 determines the specific enthalpy h _o of the air outside the vehicle 21, Since the outdoor humidity sensor 7 can be eliminated, the number of components and the like can be reduced and the configuration can be simplified as compared with the vehicle air conditioning system according to the second embodiment.

  Although the first to third embodiments have been described above, the present invention is not limited to the description of each embodiment. For example, only a part of each embodiment may be implemented, or all or a part of each embodiment may be combined.

  DESCRIPTION OF SYMBOLS 1 Vehicle air conditioning system, 2 Air conditioner, 3 Cross flow fan, 4 Indoor temperature sensor, 5 Outdoor temperature sensor, 6 Indoor humidity sensor, 7 Outdoor humidity sensor, 21 Vehicle, 22 Roof, 23 Guest room, 24 Ceiling, 25 Suction Mouth, 26 Outlet, 27 Outlet, 28 Seat, 29 Door, 41 Heat Exchanger, 42 Outdoor Blower, 43 Motor, 44 Air Inlet, 45 Air Outlet, 71 Arrow indicating Intake Airflow of Air Conditioner, 72 Air Conditioning Arrow indicating the blown airflow of the machine, 73 Arrow indicating the blown airflow of the cross-flow fan, 74 Arrow indicating the airflow of the outdoor fan, 75 Arrow indicating the airflow of the outdoor fan, 76 Arrow, 81 Arrow indicating movement of the cross flow fan, 91 control unit, 92 door opening / closing control unit, P vertical plane.

Claims (8)

An air conditioner that air-conditions the air in the interior of the vehicle;
A cross flow fan that swings along the longitudinal direction of the vehicle and sends air from the ceiling to the space inside the vehicle;
Control means for controlling the operation of the cross flow fan,
The control means includes
The vehicle door is open, and
The temperature of the air inside the vehicle is higher than the temperature of the air outside the vehicle, or the specific enthalpy of the air inside the vehicle is compared with the specific enthalpy of the air outside the vehicle. In the big state
The cross-flow blower blows air toward a space on the side where the door is located with reference to a plane parallel to the height direction of the vehicle and including the swing shaft in the space inside the vehicle. The vehicle air-conditioning system is characterized by being controlled as described above. The control means includes
The vehicle door is open, and
The temperature of the air inside the vehicle is lower than the temperature of the air outside the vehicle, or the specific enthalpy of the air inside the vehicle is compared with the specific enthalpy of the air outside the vehicle. In a small state,
2. The vehicle air conditioner according to claim 1, wherein the cross-flow blower is controlled to stop blowing or to blow in a state in which the amount of blown air is reduced as compared to before the door is opened. system. An air conditioner that air-conditions the air in the interior of the vehicle;
A cross flow fan that swings along the longitudinal direction of the vehicle and sends air from the ceiling to the space inside the vehicle;
Control means for controlling the operation of the cross flow fan,
The control means includes
The vehicle door is open, and
The temperature of the air inside the vehicle is lower than the temperature of the air outside the vehicle, or the specific enthalpy of the air inside the vehicle is compared with the specific enthalpy of the air outside the vehicle. In a small state,
The vehicle air-conditioning system is characterized in that the cross flow blower is controlled so as to stop blowing or blow in a state where the amount of blown air is reduced as compared to before the door is opened. Indoor temperature measuring means for measuring the temperature of air in the space inside the vehicle;
Outdoor temperature measuring means for measuring the temperature of the air outside the vehicle, and
The control means includes
Based on the temperature measured by the indoor temperature measuring means and the temperature measured by the outdoor temperature measuring means, the temperature of the air in the space inside the vehicle and the outside of the vehicle when the door is open The vehicle air conditioning system according to any one of claims 1 to 3, wherein a magnitude relationship with the air temperature is determined. Indoor temperature measuring means for measuring the temperature of air in the space inside the vehicle;
Indoor humidity measuring means for measuring the humidity of air in the space inside the vehicle;
Outdoor temperature measuring means for measuring the temperature of the air outside the vehicle, and
The control means includes
The temperature measured by the indoor temperature measuring means, the humidity measured by the indoor humidity measuring means, the temperature measured by the outdoor temperature measuring means, and the humidity measured in advance by the indoor humidity measuring means The size relationship between the specific enthalpy of air in the space inside the vehicle and the specific enthalpy of air outside the vehicle when the door is open is determined based on the size relationship. The vehicle air conditioning system as described in any one of Claims. Indoor temperature measuring means for measuring the temperature of air in the space inside the vehicle;
Indoor humidity measuring means for measuring the humidity of air in the space inside the vehicle;
Outdoor temperature measuring means for measuring the temperature of air outside the vehicle;
Outdoor humidity measuring means for measuring the humidity of the air outside the vehicle, and
The control means includes
Based on the temperature measured by the indoor temperature measuring means, the humidity measured by the indoor humidity measuring means, the temperature measured by the outdoor temperature measuring means, and the humidity measured by the outdoor humidity measuring means 4. The magnitude relationship between the specific enthalpy of air in the space inside the vehicle and the specific enthalpy of air outside the vehicle in a state where the door is open is determined. The vehicle air conditioning system according to claim 1. An air conditioner for air-conditioning air in a space inside a vehicle, and a cross-flow fan having an oscillating shaft along the longitudinal direction of the vehicle and sending air from the ceiling to the space inside the vehicle. A control method,
The vehicle door is open, and
The temperature of the air inside the vehicle is higher than the temperature of the air outside the vehicle, or the specific enthalpy of the air inside the vehicle is compared with the specific enthalpy of the air outside the vehicle. In the big state
The cross-flow blower blows air toward a space on the side where the door is located with reference to a plane parallel to the height direction of the vehicle and including the swing shaft in the space inside the vehicle. A control method for a vehicle air conditioning system, characterized in that An air conditioner for air-conditioning air in a space inside a vehicle, and a cross-flow fan having an oscillating shaft along the longitudinal direction of the vehicle and sending air from the ceiling to the space inside the vehicle. A control method,
The vehicle door is open, and
The temperature of the air inside the vehicle is lower than the temperature of the air outside the vehicle, or the specific enthalpy of the air inside the vehicle is compared with the specific enthalpy of the air outside the vehicle. In a small state,
A control method for an air conditioning system for a vehicle, wherein the cross flow blower is controlled to stop blowing air or to blow air in a state in which an air blowing amount is reduced as compared to before the door is opened.

Images