JP2014040147A - Vehicle air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air-conditioning system uniformizing the temperature distribution of air in a cabin, with a simple structure, while securing the dimension of the cabin.SOLUTION: A vehicle air-conditioning system 1 includes: an air conditioner 2 sucking air in a cabin 23 from a suction port 25, air-conditioning the sucked air and sending the air-conditioned air to the cabin 23; a cross flow air blower 3 provided on a rear side of a ceiling 24 of the cabin 23 and at a substantial center in a width direction of a vehicle 21 so as to send air to the cabin 23; a first temperature sensor 4 detecting the temperature of air in the vicinity of the suction port 25; a second temperature sensor 5 detecting the temperature of air at a position different from the position where the first temperature sensor 4 detects the temperature; and control means 6 controlling an air blowing operation of the cross flow air blower 3 on the basis of a difference between the temperature detected by the first temperature sensor 4 and the temperature detected by the second temperature sensor 5.

Description

  The present invention relates to a vehicle air-conditioning system used in vehicles such as passenger railway vehicles and large buses.

In a conventional vehicle air conditioning system, an air conditioner is provided on the roof of the vehicle, and an air inlet and a blowout port of the air conditioner are provided on the ceiling of the passenger cabin.
For example, when the air in the cabin is warmed by the heating operation of such a vehicle air conditioning system, the heating airflow blown out from the air outlet of the air conditioner is accumulated above the cabin. For this reason, the temperature of the air below the passenger compartment where the seats are provided remains low, and passengers may feel that their feet are cold, and comfort may not be maintained.
For example, when the air in the cabin is cooled by the cooling operation of such an air conditioning system for a vehicle, the cooling airflow blown out from the air outlet of the air conditioner is accumulated below the cabin. For this reason, the temperature of the air below the cabin is low, the temperature of the air above the cabin remains high, the feet feel cold, the passengers feel that the head is hot, and comfort may not be maintained.
Thus, for example, a vehicle air conditioning system has been proposed in which heating airflow is blown out from the vicinity of the floor through an air passage provided on the wall surface of the passenger cabin (PTL 1). reference).

Japanese Patent Laid-Open No. 2-200563 (page 2, lower left column, lines 14 to 18)

  In such a vehicle air conditioning system, there is a problem in that the size of the guest room is reduced because the air passage is provided on the wall surface of the guest room. Further, since the air channel is provided on the wall surface of the guest room, there is a problem that the structure becomes complicated. In addition, in order to make the temperature distribution of the air in the cabin uniform, it is necessary to provide a large number of air outlets, and there is a problem that the structure is further complicated.

  The present invention has been made to solve the above-described problems, and provides a vehicle air-conditioning system that ensures uniform passenger cabin air temperature distribution while ensuring passenger cabin dimensions. Further, the present invention provides a vehicle air conditioning system that makes the air temperature distribution in the passenger cabin uniform with a simple structure.

  An air conditioning system for a vehicle according to the present invention includes at least one air conditioner that sucks air in a space inside a vehicle from a suction port, air-conditions the sucked air and sends the air to the space, and a back side of the ceiling of the space And at least one cross-flow blower that sends air to the space, and at least one first temperature sensor that detects the temperature of the air in the vicinity of the suction port. And at least one second temperature sensor for detecting the temperature of air at a position different from the position at which the first temperature sensor detects the temperature in the space, and the temperature detected by the first temperature sensor And a control means for controlling the blowing operation of the cross flow blower based on the difference between the temperature detected by the second temperature sensor and the temperature detected by the second temperature sensor.

  The vehicle air conditioning system according to the present invention includes a control means for controlling the blowing operation of the cross flow fan based on the difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor. By providing, since the temperature distribution of the air in the cabin can be made uniform in a short time, passenger comfort can be improved. Moreover, since it is not necessary to provide a new air path on the wall surface of the cabin, the comfort of passengers can be improved with a simple structure.

It is a figure which shows the structure of the vehicle air conditioning system which concerns on Embodiment 1 of this invention. It is a figure which shows the result of having simulated the temperature distribution of the air of the passenger room at the time of the heating operation of the vehicle air conditioning system which concerns on the comparative example 1. FIG. It is a figure which shows the result of having simulated the temperature distribution of the air of a guest room at the time of the heating operation of the vehicle air conditioning system which concerns on Embodiment 1 of this invention. It is a figure which shows the result of having simulated the time change of the temperature of the air of the guest room of the vehicle air conditioning system which concerns on the comparative example 1, and the vehicle air conditioning system which concerns on Embodiment 1. FIG. It is a figure which shows the modification of the vehicle air conditioning system which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the vehicle air conditioning system which concerns on Embodiment 2 of this invention. It is a figure which shows the structure of the vehicle air conditioning system which concerns on Embodiment 3 of this invention.

Hereinafter, a vehicle air conditioning system according to the present invention will be described with reference to the drawings.
In the description of the embodiment, a vehicle air conditioning system used for a passenger railway vehicle is described. However, the vehicle air conditioning system according to the present invention includes a vehicle air conditioning system used for other vehicles. Is included. Moreover, in each figure, the same code | symbol is attached | subjected to the same member or the same part. Further, the illustration of the fine structure is simplified or omitted as appropriate. In addition, overlapping descriptions are simplified or omitted as appropriate.

Embodiment 1 FIG.
The vehicle air conditioning system according to Embodiment 1 will be described below.
(Configuration of vehicle air conditioning system)
First, the configuration of the vehicle air conditioning system according to Embodiment 1 will be described.
1 is a diagram showing a configuration of a vehicle air conditioning system according to Embodiment 1. FIG. As shown in FIG. 1, the vehicle air conditioning system 1 includes at least an air conditioner 2, a cross flow blower 3, an inlet temperature sensor 4, an indoor temperature sensor 5, and a control unit 6 (note that The suction port temperature sensor 4 corresponds to a “first temperature sensor” in the present invention, the indoor temperature sensor 5 corresponds to a “second temperature sensor” in the present invention, and the control unit 6 in the present invention “ Corresponds to "control means").

  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 substantially in the center in the width direction of the vehicle 21 (note that the passenger cabin 23 corresponds to the “space inside the vehicle” in the present invention). . 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 blower 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 air conditioner 2 is controlled by the control unit 6 and air-conditions the air in the cabin 23 by performing a heating operation, a cooling operation, or the like. The air in the guest room 23 is sucked from the suction port 25 as indicated by an arrow 41 indicating the suction airflow of the air conditioner. The heating airflow and the cooling airflow from the air conditioner 2 are blown out to the passenger room 23 as indicated by an arrow 42 indicating a blown airflow of the air conditioner.

  The cross flow blower 3 is provided such that its longitudinal direction is parallel to the longitudinal direction of the vehicle 21, and can swing in the direction of an arrow 43 indicating the movement of the cross flow blower, that is, the width direction of the vehicle 21. In addition, an air flow is blown out to the cabin 23 as indicated by an arrow 44 indicating a blown air flow of the cross flow blower from a blowout port 27 provided on the ceiling 24. The air outlet 27 is located at the approximate center in the width direction of the vehicle 21.

  The suction port temperature sensor 4 is provided in the vicinity of the suction port 25 and detects the temperature of the suction airflow of the air conditioner 2 sucked from the suction port 25. The indoor temperature sensor 5 is provided below the passenger room 23, for example, in the vicinity of the seat 28, and detects the temperature of the air in the guest room 23. The suction port temperature sensor 4 and the room temperature sensor 5 are composed of, for example, a thermistor.

  The control unit 6 is provided inside the air conditioner 2, for example, based on an operation from an operation unit (not shown) provided in the cab, the operation of the air conditioner 2 (heating operation, cooling operation, etc.). To control. When the temperature of the air in the passenger compartment 23 is set by the operation unit (not shown), the control unit 6 determines the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4. The operation of the air conditioner 2 is controlled so that the temperature is set in (not shown) (hereinafter, the temperature set in the operation unit (not shown) is referred to as “set temperature”).

  The control unit 6 further controls the cross flow blower 3 based on the temperature of the suction airflow of the air conditioner 2 detected by the inlet temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5. Controls the blowing operation.

(Operation of vehicle air conditioning system)
Next, the operation of the vehicle air conditioning system according to Embodiment 1 will be described.
Here, for example, an operation after the vehicle 21 stops at a station and passengers get on and off will be described. It is assumed that the air conditioner 2 is always in operation, and the case where the air conditioner 2 performs a heating operation will be described for ease of explanation.

  The control unit 6 obtains a difference between the temperature of the air flow of the air conditioner 2 detected by the air inlet temperature sensor 4 and the temperature of the air in the cabin 23 detected by the indoor temperature sensor 5, and the temperature difference is a predetermined value. If the temperature is equal to or higher than the reference temperature, the blowing operation of the cross flow fan 3 is started. At this time, the direction of the cross flow fan 3 may be fixed in any one direction. Further, the control unit 6 may cause the cross flow blower 3 to perform a transient blowing operation such as blowing while swinging in the width direction of the vehicle 21. When such a transient air blowing operation is performed, stirring and mixing of the air in the cabin 23 is further promoted, and the temperature of the air in the cabin 23 can be made more uniform. Thereafter, when the temperature difference becomes smaller than a predetermined reference temperature with time, the control unit 6 stops the blowing operation of the cross flow fan 3. The predetermined reference temperature is preferably in the range of 1 to 4 ° C. The predetermined reference temperature needs to be set according to the form of the guest room 23 and the like. The predetermined reference temperature is set in consideration of the degree of discomfort experienced by the passenger.

(Operation of air conditioning system for vehicles)
Next, the operation of the vehicle air conditioning system according to Embodiment 1 will be described.
First, the operation of a vehicle air conditioning system (hereinafter referred to as “Comparative Example 1”) that does not have the cross-flow blower 3 will be described as a conventional vehicle air conditioning system.
Due to the opening and closing operation of the door when the passenger gets on and off, the temperature of the air in the cabin 23 becomes equal to or lower than the set temperature. Since the heating airflow is always blown out from the outlet 26, the temperature of the air in the guest room 23 rises after the door is closed, but the heating airflow is less dense than the air in the guest room 23 and accumulates above the guest room 23. It does not reach the lower part of the guest room 23. Therefore, the air in the cabin 23 has a large temperature distribution in the height direction, and for example, a passenger sitting on the seat 28 feels cold.

  FIG. 2 is a diagram illustrating a result of simulating the temperature distribution of the air in the cabin during the heating operation of the vehicle air conditioning system according to Comparative Example 1. In addition, FIG. 2 is the result of simulating the temperature distribution 1 minute after closing the door. As shown in FIG. 2, a large temperature distribution is generated in the air in the cabin 23. The temperature distribution is stratified in the height direction, and a large temperature difference occurs particularly below the passenger cabin 23 where passengers sit.

  Next, the operation of the vehicle air conditioning system according to Embodiment 1 will be described. FIG. 3 is a diagram illustrating a result of simulating the temperature distribution of the air in the cabin during the heating operation of the vehicle air conditioning system according to Embodiment 1. In addition, FIG. 3 is the result of having simulated the temperature distribution 1 minute after closing a door similarly to FIG. As shown in FIG. 3, in the vehicle air conditioning system according to Embodiment 1, the temperature distribution of the air in the passenger compartment 23 is reduced.

  FIG. 4 is a diagram illustrating a result of simulating time-dependent changes in the temperature of air in the cabin of the vehicle air conditioning system according to Comparative Example 1 and the vehicle air conditioning system according to Embodiment 1. FIG. 4 shows the time change of the air temperature at the height of 0 m and 0.5 m from the floor surface in the vehicle air conditioning system according to Comparative Example 1 and the vehicle air conditioning system according to Embodiment 1. Yes. As shown in FIG. 4, it can be seen that the temperature of the air in the cabin 23 can be increased uniformly and quickly in the vehicle air conditioning system according to the first embodiment compared to the vehicle air conditioning system according to Comparative Example 1.

As described above, in the vehicle air conditioning system according to the first embodiment, when the temperature distribution is generated in the air in the cabin 23, the cross-flow blower 3 starts the blowing operation to stir and mix the air. It is possible to make the temperature of the air 23 uniform in a short time and to raise it in a short time.
Therefore, passenger comfort can be improved. Moreover, since it is not necessary to provide a new air path on the wall surface of the passenger room 23 or the like, there is a remarkable effect that passenger comfort can be improved with a simple structure.

  Further, 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 in the approximate center in the width direction of the vehicle 21, so that air can be efficiently sent to the entire passenger cabin 23. Therefore, stirring / mixing of the air in the passenger compartment 23 is further promoted, and the temperature of the air in the passenger compartment 23 can be made uniform in a shorter time and raised in a shorter time.

  Further, the temperature distribution of the air in the guest room 23 is measured by a simple method in which temperature sensors are provided in the vicinity of the suction port 25 and in the guest room 23. Therefore, effects such as simplification of the system, cost reduction, and improvement in maintainability are exhibited.

  Further, a temperature sensor for detecting a temperature to be compared with a set temperature when controlling the operation of the air conditioner 2 (heating operation, cooling operation, etc.), that is, the inlet temperature sensor 4 is an air temperature of the cabin 23. It is also used as a temperature sensor for measuring the distribution. Therefore, it is possible to control the operation of the air conditioner 2 and measure the temperature distribution of the air in the cabin 23 with fewer temperature sensors, further simplifying the system, reducing costs, improving maintainability, etc. An effect is produced.

  The suction port temperature sensor 4 is provided in the vicinity of the suction port 25 and detects the temperature of the suction airflow of the air conditioner 2 sucked from the suction port 25. The suction port temperature sensor 4 needs to be provided above the cabin 23 in order to detect the temperature distribution in the height direction of the air in the cabin 23, but the upper portion of the cabin 23 has various airflows generated in the cabin 23. There are many blind spots, and temperature differences are likely to occur in each part above the cabin 23. For this reason, when the suction port temperature sensor 4 is installed in any one of the upper portions of the cabin 23, an error occurs in the temperature to be detected according to the installed location. On the other hand, when the suction port temperature sensor 4 detects the temperature of the suction airflow, the temperature is detected in a state where the air of each part above the cabin 23 is collected, and the temperature of each part above the cabin 23 is averaged. Can be detected. Therefore, the effect that the temperature distribution of the air in the passenger room 23 can be measured more accurately is exhibited.

  Further, the control unit 6 obtains a difference between the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5, and the temperature difference is calculated. When the temperature is equal to or higher than a predetermined reference temperature, only the start and stop of the cross flow fan 3 are controlled. As described above, the control of the cross flow blower 3 is simplified, so that an effect that the control system can be realized at a low cost without being complicated.

  In addition, although the case of the heating operation has been described, the same applies to the case of the cooling operation. In the case of cooling operation, a cooling airflow is blown out from the outlet 26. The cooling airflow has a higher density than the air in the cabin 23 and accumulates below the cabin 23. Therefore, the air in the cabin 23 has a large temperature distribution in the height direction, and the passenger sitting on the seat 28 feels cold as in the case of the heating operation. That is, the difference between the temperature of the suction airflow of the air conditioner 2 detected by the inlet temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5 is obtained, and the difference is equal to or greater than a predetermined reference temperature. In some cases, the cross-flow blower 3 starts the air blowing operation and stirs and mixes the air in the cabin 23 so that the temperature of the air in the cabin 23 can be made uniform in a short time and reduced in a short time. This makes it possible to improve passenger comfort as in the case of heating operation.

  The room temperature sensor 5 is provided below the passenger compartment 23, for example, in the vicinity of the seat 28, but may be located at any position as long as the temperature distribution in the height direction of the air in the passenger compartment 23 can be measured. It may be attached to the floor surface of the guest room 23 or the inner surface of the guest room 23.

  FIG. 5 is a diagram illustrating a modification of the vehicle air-conditioning system according to the first embodiment. The room temperature sensor 5 is not a thermistor but may be a non-contact temperature sensor such as a radiant heat sensor or an infrared sensor. In that case, it may be provided above the cabin 23, for example, on the ceiling 24 or the like. That is, as long as the temperature distribution of the air in the cabin 23 can be measured, the room temperature sensor 5 may be any type of sensor and may be provided anywhere.

  In FIG. 1, the suction port temperature sensor 4 is provided outside the cabin 23, but may be provided inside the cabin 23. When it is provided outside the guest room 23, it is not visually recognized by passengers in the guest room 23, so that an effect of preventing mischief and the like and making the appearance beautiful can be achieved.

  Further, the case where one air inlet temperature sensor 4 and one room temperature sensor 5 are provided for one air conditioner 2 has been described, but the air inlet temperature sensor 4 for one air conditioner 2 is described. A plurality of room temperature sensors 5 may be provided, and an average value of the temperatures detected by the temperature sensors may be obtained respectively.

  Moreover, although the case where one cross flow fan 3 is provided for one air conditioner 2 is described, a plurality of cross flow fans 3 are arranged in the longitudinal direction of the vehicle 21 with respect to one air conditioner 2. A plurality of cross flow fans 3 may be provided to operate in conjunction with each other. In addition, a plurality of air conditioners 2 are provided side by side in the longitudinal direction of the vehicle 21, and a plurality of cross-flow fans 3 and suction port temperature sensors 4 that operate in association with each of the plurality of air conditioners 2. An indoor temperature sensor 5 may be provided.

Embodiment 2. FIG.
Hereinafter, the vehicle air conditioning system according to Embodiment 2 will be described. In addition, the description which overlaps with the vehicle air conditioning system which concerns on Embodiment 1 is simplified or abbreviate | omitted suitably.
(Configuration of vehicle air conditioning system)
First, the configuration of the vehicle air conditioning system according to Embodiment 2 will be described.
FIG. 6 is a diagram illustrating a configuration of the vehicle air conditioning system according to the second embodiment. FIG. 6 is a view of the vehicle 21 as viewed from the side. As shown in FIG. 6, the vehicle air conditioning system 7 includes an air conditioner 2, a plurality of cross flow fans 3 </ b> A to 3 </ b> F, a suction port temperature sensor 4, a plurality of indoor temperature sensors 5 </ b> A to 5 </ b> F, and a control unit 8. (The indoor temperature sensors 5A to 5F correspond to the “second temperature sensor” in the present invention. The control unit 8 corresponds to the “control means” in the present invention.)

  In the vehicle air conditioning system according to Embodiment 1, one or a plurality of cross-flow fans 3 that operate in conjunction with one air conditioner 2 are provided. On the other hand, in the vehicle air conditioning system according to the second embodiment, a plurality of cross-flow fans 3A to 3F that individually operate with respect to one air conditioner 2 are provided. One of the indoor temperature sensors 5A to 5F is associated with each of the cross flow fans 3A to 3F. For example, each of the cross flow fans 3A to 3F is associated with one indoor temperature sensor 5A to 5F whose position in the longitudinal direction of the vehicle 21 is closest.

  The air conditioner 2 is provided on the roof 22 of the vehicle 21. The cross flow fans 3 </ b> A to 3 </ b> F are provided on the back side of the ceiling 24 of the passenger cabin 23 of the vehicle 21 and in 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 fans 3A to 3F, 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 air conditioner 2 is controlled by the control unit 8, and performs air heating operation, air cooling operation, and the like 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 45 indicating the suction airflow of the air conditioner. Heating airflow and cooling airflow from the air conditioner 2 are blown out to the guest room 23 as indicated by an arrow 46 indicating a blown airflow of the air conditioner.

  The cross flow fans 3 </ b> A to 3 </ b> F are provided side by side in the longitudinal direction of the vehicle 21, and can individually swing in the width direction of the vehicle 21. In addition, airflow is blown out to the passenger cabin 23 from the outlets 27 </ b> A to 27 </ b> F provided in the ceiling 24. The outlets 27 </ b> A to 27 </ b> F are located at substantially the center in the width direction of the vehicle 21.

  The suction port temperature sensor 4 is provided in the vicinity of the suction port 25 and detects the temperature of the suction airflow of the air conditioner 2 sucked from the suction port 25. The indoor temperature sensors 5 </ b> A to 5 </ b> F are provided below the passenger cabin 23, for example, in the vicinity of the seat 28, and are arranged side by side in the longitudinal direction of the vehicle 21. The suction port temperature sensor 4 and the indoor temperature sensors 5A to 5F are, for example, thermistors.

  The control unit 8 is provided inside the air conditioner 2, for example, based on an operation from an operation unit (not shown) provided in the cab, the operation of the air conditioner 2 (heating operation, cooling operation, etc.). To control. When the set temperature is set by the operation unit (not shown), the control unit 8 controls the air so that the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4 becomes the set temperature. The operation of the harmony machine 2 is controlled.

  The control unit 8 further performs cross flow based on the temperature of the airflow of the air conditioner 2 detected by the air inlet temperature sensor 4 and the temperature of the air in the passenger room 23 detected by the indoor temperature sensors 5A to 5F. The blowing operation of the blowers 3A to 3F is individually controlled.

(Operation of vehicle air conditioning system)
Next, the operation of the vehicle air conditioning system according to Embodiment 2 will be described.
Here, for example, an operation after the vehicle 21 stops at a station and passengers get on and off will be described. It is assumed that the air conditioner 2 is always in operation, and the case where the air conditioner 2 performs a heating operation will be described for ease of explanation.

  The control part 8 calculates | requires the difference of the temperature of the suction airflow of the air conditioner 2 detected with the inlet temperature sensor 4, and each temperature of the air of the passenger room 23 detected with room temperature sensors 5A-5F, and the temperature difference Is equal to or higher than the predetermined reference temperature, the air blowing operation of the cross flow fans 3A to 3F corresponding to the indoor temperature sensors 5A to 5F whose difference is equal to or higher than the predetermined reference temperature is started. At this time, the directions of the cross flow fans 3A to 3F may be fixed in any one direction. Further, the control unit 8 may cause the cross-flow fans 3A to 3F to perform a transient blowing operation that blows air while swinging in the width direction of the vehicle 21. When such a transient air blowing operation is performed, stirring and mixing of the air in the cabin 23 is further promoted, and the temperature of the air in the cabin 23 can be made more uniform. Thereafter, when the temperature difference becomes smaller than a predetermined reference temperature with the passage of time, the control unit 8 stops the blowing operation of the corresponding cross flow fans 3A to 3F. That is, the cross flow fans 3A to 3F are individually controlled according to the detection results of the indoor temperature sensors 5A to 5F. The predetermined reference temperature is preferably in the range of 1 to 4 ° C. The predetermined reference temperature needs to be set according to the form of the guest room 23 and the like. The predetermined reference temperature is set in consideration of the degree of discomfort experienced by the passenger.

(Operation of air conditioning system for vehicles)
Next, the operation of the vehicle air conditioning system according to Embodiment 2 will be described.
Due to the opening and closing operation of the door when the passenger gets on and off, the temperature of the air in the cabin 23 becomes equal to or lower than the set temperature. Since the heating airflow is always blown out from the outlet 26, the temperature of the air in the guest room 23 rises after the door is closed, but the heating airflow is less dense than the air in the guest room 23 and accumulates above the guest room 23. It does not reach the lower part of the guest room 23. Therefore, the air in the cabin 23 has a large temperature distribution in the height direction, and for example, a passenger sitting on the seat 28 feels cold. Further, since the door exists only in a part of the longitudinal direction of the vehicle 21, the air in the passenger compartment 23 after the door is closed also has a temperature distribution in the longitudinal direction of the vehicle 21.

  The vehicle air conditioning system according to Embodiment 2 is provided with a plurality of indoor temperature sensors 5A to 5F in the longitudinal direction of the vehicle 21, and can measure the temperature distribution in the longitudinal direction of the vehicle 21. In addition to the temperature distribution in the height direction of the air in the cabin 23, the temperature distribution in the longitudinal direction of the vehicle 21 is caused by individually blowing the plurality of cross flow fans 3 </ b> A to 3 </ b> F provided in the longitudinal direction of the vehicle 21. Can also be made uniform.

  Note that the cross flow fans 3A to 3F and the room temperature sensors 5A to 5F do not necessarily have to be associated one-to-one. For example, the cross flow fan 3A is associated with the room temperature sensor 5A and the room temperature sensor 5B. The average value of the temperature detected by the room temperature sensor 5A and the temperature detected by the room temperature sensor 5B may be obtained.

  For ease of explanation, the case where the number of the cross flow fans 3A to 3F and the indoor temperature sensors 5A to 5F is six is described, but the number is not limited to six, and the length of the guest room 23 The number is set according to the sheath form, how the temperature distribution is generated, and the like. Of course, the numbers of the cross flow fans 3A to 3F and the indoor temperature sensors 5A to 5F need not be the same.

Further, when the control unit 8 starts and stops the blowing operation of the cross flow blowers 3A to 3F, the temperature of the suction air flow of the air conditioner 2 detected by the suction port temperature sensor 4 and the indoor temperature sensors 5A to 5F are detected. The predetermined reference temperature to be compared with the difference in the temperature of the air in the guest room 23 may be the same value in all the cross flow fans 3A to 3F, but the cross flow fan is used according to the temperature distribution of the air in the guest room 23. You may make it differ for every 3A-3F.
As shown in FIG. 6, the heating airflow blown out from the blowout port 26 is sucked in from the suction port 25 provided in the vicinity of the approximate center in the longitudinal direction of the vehicle 21, so the heating airflow flows in the longitudinal direction of the vehicle 21. As the heat is taken away, the temperature drops. Therefore, the temperatures detected by the indoor temperature sensor 5A and the indoor temperature sensor 5F tend to be the highest. In such a case, if the predetermined reference temperature is the same, the cross flow blower 3C and the cross flow blower 3D will always operate, so that the passengers near the cross flow blower 3C and the cross flow blower 3D generate airflow. Feeling and comfort may be impaired. Therefore, for example, a difference may be provided in the predetermined reference temperature such that the predetermined reference temperature is decreased in the crossflow fan 3A or the crossflow fan 3F and increased in the crossflow fan 3C or the crossflow fan 3D.

Moreover, although the case of the heating operation has been described, the same applies to the case of the cooling operation.
The indoor temperature sensors 5A to 5F are provided below the passenger room 23, for example, in the vicinity of the seat 28, but may be at any position as long as the temperature distribution in the height direction of the air in the guest room 23 can be measured. For example, you may attach to the floor surface of the guest room 23, or the inner surface of the guest room 23. FIG.
Further, the indoor temperature sensors 5A to 5F are not thermistors but may be non-contact temperature sensors such as a radiant heat sensor and an infrared sensor. In that case, it may be provided above the cabin 23, for example, on the ceiling 24 or the like. That is, as long as the temperature distribution of the air in the cabin 23 can be measured, the indoor temperature sensors 5A to 5F may be any type of sensor and may be provided anywhere.
Further, the suction port temperature sensor 4 may be provided outside the cabin 23 or inside the cabin 23.
Moreover, although the case where the one inlet temperature sensor 4 is provided with respect to one air conditioner 2 is demonstrated, multiple inlet temperature sensors 4 are provided with respect to one air conditioner 2, and each temperature is provided. An average value or the like of the temperature detected by the sensor may be obtained.
A plurality of air conditioners 2 are provided in the longitudinal direction of the vehicle 21, and the cross flow fans 3 </ b> A to 3 </ b> F, the inlet temperature sensor 4, and the indoor temperature sensors 5 </ b> A to 5 </ b> F are provided for each of the plurality of air conditioners 2. It may be provided.

Embodiment 3 FIG.
Hereinafter, the vehicle air conditioning system according to Embodiment 3 will be described. In addition, the description which overlaps with the vehicle air conditioning system which concerns on Embodiment 1 and Embodiment 2 is simplified or abbreviate | omitted suitably.
(Configuration of vehicle air conditioning system)
First, the configuration of the vehicle air conditioning system according to Embodiment 3 will be described.
FIG. 7 is a diagram illustrating a configuration of a vehicle air-conditioning system according to the third embodiment. As shown in FIG. 7, the vehicle air conditioning system 9 includes at least an air conditioner 2, a cross flow blower 3, an inlet temperature sensor 4, an indoor temperature sensor 5, and a control unit 10 (note that The control unit 10 corresponds to a “control unit” in the present invention.)

  In the vehicle air conditioning system according to Embodiment 1, the control unit 6 detects the temperature of the airflow of the air conditioner 2 detected by the inlet temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5. And the air blowing operation of the cross flow fan 3 is started and stopped depending on whether the temperature difference is equal to or higher than a predetermined reference temperature. On the other hand, in the vehicle air conditioning system according to the third embodiment, the control unit 10 controls the swing speed, the air volume, or the swing amount of the cross flow fan 3 according to the temperature difference.

  The control unit 10 is provided inside the air conditioner 2, for example, based on an operation from an operation unit (not shown) provided in the cab, the operation of the air conditioner 2 (heating operation, cooling operation, etc.). To control. When the set temperature is set by the operation unit (not shown), the control unit 10 controls the air so that the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4 becomes the set temperature. The operation of the harmony machine 2 is controlled.

  The control unit 10 further controls the cross flow blower 3 based on the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5. The air blowing operation is controlled.

(Operation of vehicle air conditioning system)
Next, the operation of the vehicle air conditioning system according to Embodiment 3 will be described.
Here, for example, an operation after the vehicle 21 stops at a station and passengers get on and off will be described. It is assumed that the air conditioner 2 is always in operation, and the case where the air conditioner 2 performs a heating operation will be described for ease of explanation.

  The control unit 10 obtains a difference between the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5, and according to the temperature difference The oscillating speed, the air volume, or the oscillating amount is set, and the cross flow fan 3 is operated to blow air. At this time, the larger the temperature difference, the faster the rocking speed, the greater the air volume, or the larger the rocking amount. If the temperature difference is a temperature difference that does not require the temperature distribution of the air in the passenger compartment 23 to be uniform, the cross flow blower 3 may be stopped, and traverse is performed at a slow swing speed, a small air volume, or a small rock volume. The air blowing operation of the flow blower 3 may be continued. Alternatively, the swinging operation may be performed when the temperature difference is large, and the swinging operation may be stopped when the temperature difference is small. Further, the swing speed, the air volume, or the swing amount may be increased continuously or stepwise as the temperature difference increases.

(Operation of air conditioning system for vehicles)
The vehicle air conditioning system according to Embodiment 3 obtains the difference between the temperature of the airflow of the air conditioner 2 detected by the inlet temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5. Since the swing speed or air volume or swing amount of the cross flow blower 3 is optimized according to the temperature difference, for example, immediately after the door is opened or closed, immediately after the air conditioner 2 starts air conditioning, or the air conditioner. When the temperature distribution of the air in the passenger compartment 23 becomes large, such as immediately after 2 increases the amount of blowout, the air in the passenger compartment 23 can be further stirred and mixed, and the air temperature in the passenger compartment 23 can be made uniform in a shorter time, And it becomes possible to raise in a shorter time.

  For ease of explanation, the case where one cross-flow fan 3 is provided for one air conditioner 2 has been described. However, as in the vehicle air conditioning system according to the first embodiment. In addition, a plurality of cross-flow fans 3 that operate in conjunction with one air conditioner 2 may be provided, and one air conditioner 2 as in the vehicle air conditioning system according to the second embodiment. A plurality of cross flow fans 3A to 3F that operate individually may be provided.

  Further, a difference between the temperature of the suction airflow of the air conditioner 2 detected by the suction port temperature sensor 4 and the temperature of the air in the cabin 23 detected by the room temperature sensor 5 is obtained, and the cross flow blower is determined according to the temperature difference. Although the case where any one of the swing speed, the air volume, and the swing amount is controlled is described, all or any two of them may be controlled simultaneously.

  While the first to third embodiments have been described above, the present invention is not limited to the description of each embodiment. For example, it is possible to combine each embodiment and each modification.

  1, 7, 9 Vehicle air conditioning system, 2 Air conditioner, 3, 3A-3F Cross-flow blower, 4 Suction temperature sensor, 5, 5A-5F Indoor temperature sensor, 6, 8, 10 Control unit, 21 Vehicle, 22 roof, 23 guest rooms, 24 ceiling, 25 air inlet, 26, 27, 27A-27F air outlet, 28 seats, 41, 45 arrows indicating the air flow of the air conditioner, 42, 46 air air outlet of the air conditioner Arrow, 43 Arrow indicating the movement of the cross flow blower, 44 Arrow indicating the blown air flow of the cross flow blower.

Claims (6)

At least one air conditioner that sucks air in a space inside the vehicle from a suction port, air-conditions the sucked air, and sends the air to the space;
At least one cross-flow blower that is provided on the back side of the ceiling of the space and substantially in the center in the width direction of the vehicle, and sends air to the space;
At least one first temperature sensor for detecting the temperature of the air in the vicinity of the inlet;
At least one second temperature sensor for detecting the temperature of air at a position different from the position at which the first temperature sensor detects the temperature of the space;
Control means for controlling the blowing operation of the cross flow fan based on the difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor;
A vehicle air conditioning system characterized by comprising: The control means controls the start and stop of the air blowing operation.
The vehicle air conditioning system according to claim 1. The cross flow blower is provided so as to be swingable in the width direction of the vehicle,
The blowing operation is a blowing operation that blows air while swinging in the width direction of the vehicle.
The vehicular air conditioning system according to claim 1 or 2. The suction port is provided above the space,
The second temperature sensor detects a temperature of air below the space;
The vehicle air conditioning system according to any one of claims 1 to 3. The first temperature sensor is provided outside the space,
The vehicle air conditioning system according to any one of claims 1 to 4, wherein The cross flow fan is plural,
The second temperature sensor is plural,
The plurality of cross flow fans and the plurality of second temperature sensors are associated with each other,
The control means detects the second temperature based on the difference between the temperature detected by the first temperature sensor and the temperature detected by each of the plurality of second temperature sensors. Individually controlling the blowing operation of the cross flow blower corresponding to the temperature sensor;
The vehicle air conditioning system according to claim 1, wherein the vehicle air conditioning system is a vehicle air conditioning system.

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