JPH10315742A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner that can swiftly cope with the fluctuation of air-conditioning load caused by getting-on/off of passengers so as to prevent the passengers from feeling uncomfortableness while ensuring the ventilating quantity. SOLUTION: A roof part is provided with a radiant panel 9, a cold air blowoff hole 7 and a ventilating hole 5, and a floor face is provided with a hot air blowoff hole 6 and a radiant panel 8 to air-condition space in a vehicle. A detecting means is provided to detect the fluctuation of air-conditioning load caused by the fluctuation of the number of passengers, and the capacity of an air conditioner for air-conditioning the space in the vehicle is adjusted by the detecting means to adjust the ventilating quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to provide a ventilation environment in a space where a large number of people such as trains are present, to ensure that there is no discomfort due to airflow and to maintain a thermal environment regardless of fluctuations in room temperature due to a large inflow of outside air. The present invention relates to an air conditioner for a vehicle that maintains a comfortable air quality environment and enables a plurality of persons to obtain a comfortable feeling.

[0002]

2. Description of the Related Art Conventionally, as one example of this type of vehicle air conditioner, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 8-85456. FIG. 6 and FIG. 7 are device configuration diagrams in a conventional train air conditioning system. Seat cold air outlet 21 for discharging conditioned air from the back of the seat back toward the rear seat
Is provided so that the passenger can individually adjust the air volume and the air direction.

As shown in FIG. 7, during cooling, cool air is supplied from a wall cool air outlet 23 along a side wall, and an air volume / wind direction adjusting device is provided in front of the outlet grill. In the case of a face-to-face seat, the supply port is switched so that only the cool air outlet 23 on the wall at the lower part of the load shelf emits cool air. Further, at the time of heating, heating air is always supplied from the warm air outlet 22 at the foot of the seat irrespective of the direction of the seat, and an air volume / wind direction adjusting device for adjusting the air volume and the air direction of the heating air is provided.

[0004]

The conventional example is an air conditioning system for a case where a passenger is sitting on a seat. However, in practice, there are many cases where trains, such as commuting vehicles, have seats arranged along the wall surface, or where passengers are standing. In such a case, the comfort of the standing person is not taken into consideration, so that the air conditioning system as in the conventional example cannot be applied. In addition, trains have air-conditioning load fluctuations caused by passengers getting on and off, but convection-type air-conditioning systems cannot respond quickly to load fluctuations and are uncomfortable until the air temperature becomes constant. Furthermore, if it is attempted to quickly follow the load by the convection method, the air volume will increase, and discomfort due to the air flow will occur. In addition, during that time, it is required to reduce the amount of ventilation, and there is a risk that the environment will be poor in terms of air quality.

[0005] The present invention has been made in view of such a situation, and aims at the case where the seat is arranged along the wall surface side or when there are many standing passengers, An object of the present invention is to provide an air conditioning system that can quickly respond to changes in the air conditioning load caused by getting on and off, and that does not cause discomfort to passengers while ensuring a sufficient amount of ventilation.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a radiation panel is provided together with an air outlet on a ceiling portion or a floor portion, and load calculation means is provided for fluctuations in air conditioning load. Means for controlling the blow-out temperature, air volume and output of the radiant panel based on the information are provided, a radiation effect is added to maintain the comfort of the thermal environment, and a means for securing the ventilation is provided.

[0007] In the vehicle air conditioner of the first invention,
A ceiling panel is provided with a radiant panel, a cool air outlet and a ventilation vent, and a warm air outlet and a radiant panel are provided on the floor to provide air conditioning inside the vehicle and to change the number of passengers in the space inside the vehicle. A detection means for detecting a change in the air conditioning load is provided, and the detection means adjusts the capacity of an air conditioner for air-conditioning the interior space of the vehicle and adjusts the ventilation volume.

[0008] In the vehicle air conditioner of the second invention,
A radiant panel and ventilation vents are provided on the ceiling, a warm air outlet and a radiant panel are provided on the floor to provide air conditioning inside the vehicle, and to reduce the air conditioning load due to fluctuations in the number of passengers in the space inside the vehicle. A detecting means for detecting the fluctuation is provided, and when the load is small, the air conditioning load is covered only by the radiation panel.

In the vehicle air conditioner of the third invention,
Detecting means for providing air-conditioning inside the vehicle by providing a ceiling radiant panel and ventilation vents on the ceiling, and installing a seat heater below the seat surface, and detecting a change in air-conditioning load due to a change in the number of passengers in the space inside the vehicle. When the heating load is small, the air conditioning load is covered by the seat heater and the ceiling radiation panel.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 is a part of a cross section of a vehicle body of a commuter train, for example, FIG. 2 is a diagram illustrating a ceiling portion of the vehicle illustrated in FIG. 1, and FIG. 3 is a diagram illustrating a floor portion of the vehicle illustrated in FIG. . In the figure, 1 is a vehicle body having a space in a vehicle such as a commuter train, 2 is an entrance for passengers to get on and off, 3 is a window, 4 is a seat arranged along a wall surface, and 5 is provided on a ceiling portion. Reference numeral 6 denotes a hot air outlet provided in a lower portion of the seat, 7 denotes a cool air outlet provided in a ceiling portion, 8 denotes a radiant panel on the floor surface, and 9 denotes a radiant panel on the ceiling surface.

The configuration of the device is shown below. A cool air outlet 7 is provided on the ceiling of the vehicle, and is connected to an air conditioner (not shown) by a duct. The air whose temperature has been adjusted by the air conditioner is supplied from the cool air outlet 7 into the vehicle interior space. A hot air outlet 6 is similarly provided below the seat, and the temperature-controlled air is mainly used for heating the feet. In addition, a suction port 5 for ventilating is provided in the ceiling portion, and the air in the vehicle sucked from this is discharged to the outside air.

Further, radiation panels 8 and 9 are provided on the ceiling surface and the floor surface. The radiation panels 8 and 9 control the panel surface temperature through a medium such as water or a refrigerant.
The temperature control of the medium may be performed by an air conditioner for producing cold and hot air, or may have a completely different heat source device.

The operation of the air conditioner when it is operated will be described. Since a large number of passengers get on and off the train, the air conditioning load fluctuates greatly. The means (not shown) for detecting the air-conditioning load includes, for example, a weight sensor and a temperature sensor.

A method for performing air conditioning according to the air conditioning load will be described below. At the time of cooling, by controlling the surface temperature of the radiation panel 9 provided on the ceiling portion, the target environment can be approached.
The medium that supplies heat to the radiation panel 9 is, for example, a refrigerant, air,
A method using water or the like is conceivable, and a heat source device used in a conventional vehicle air conditioner can be used as it is.

[0015] A large amount of outside air flows in as passengers get on and off,
Even when the air temperature rises, the radiant panel 9 can keep the passenger's sensible temperature in a comfortable range due to the radiation effect.

In the case of cooling, directing a slight air current to the head is effective for obtaining a refreshing feeling, and when the degree of congestion is severe, not only radiating panels but also cooling by cold air is used together. A cold air outlet 7 for this purpose is also provided on the ceiling.

On the other hand, an operation method during heating will be described below.
At the time of heating, a comfortable thermal environment is realized by controlling the temperature of the radiation panel 8 provided on the floor surface.

Further, by blowing out a small amount of warm air from the warm air outlet 6 provided at the lower part of the seat, it becomes possible to heat the vehicle particularly at the feet. At that time, since the air volume can be reduced as compared with the case of only hot air, dust does not soar and warm air does not excessively increase.

When the heating load cannot be covered by the floor radiation panel 8 alone, the comfort is maintained by controlling the surface temperature of the ceiling radiation panel 9. Warm air from the ceiling can cause discomfort, so it is not used for heating purposes.However, blowing a breeze at a temperature lower than the hot air temperature can suppress the rise of warm air on the ceiling, providing a more comfortable environment. It is also possible to aim for.

Further, when there are many passengers such as commuters, as shown in FIG. 8, the amount of carbon dioxide in the vehicle increases remarkably and exceeds the environmental standard value. In other words, not only the thermal environment but also the air quality tends to be a poor environment in consideration of the air quality.
Therefore, it is necessary to secure a ventilation volume, but if the ventilation volume is increased to increase the introduction amount of outside air, the temperature-controlled air in the vehicle flows out, and a large amount of outside air having a temperature difference from the set temperature flows in. Therefore, the air mixes and the indoor air temperature fluctuates greatly. In a convection-only air conditioner, the environment becomes unpleasant until the air temperature reaches the set temperature again.However, the installation of the radiant panel can keep the sensible temperature constant by the effect of radiation even if the air temperature fluctuates. It is possible and the comfort including the air quality environment can be improved.

According to the first embodiment of the present invention, the following effects can be obtained. As a vehicle air conditioner, a radiation panel is provided along with an air outlet on a ceiling portion and a floor portion, and a load calculation means is provided for a change in air conditioning load, and a means for controlling a blowout temperature, a flow rate, and an output of the radiation panel based on the information. A certain detecting means is provided to maintain the comfort of the thermal environment by adding the effect of radiation, and further, the comfort can be maintained irrespective of the fluctuation of the air temperature, so that the ventilation volume can be secured. Therefore, the air-conditioning system quickly responds to a large number of standing passengers or large fluctuations in the air-conditioning load caused by passengers getting on and off or by the inflow of outside air, ensuring sufficient ventilation and not causing discomfort to the passengers. Can be provided.

Embodiment 2 FIG. The operation of this embodiment is
Referring to FIG. In the figure, 1 is a vehicle body having a space in a vehicle such as a commuter train, 2 is an entrance for passengers to get on and off, 3 is a window, 4 is a seat arranged along a wall surface, and 5 is provided on a ceiling portion. Reference numeral 8 denotes a floor radiation panel, and 9 denotes a ceiling radiation panel.

On routes with a relatively low degree of congestion, the air conditioning load can be covered only by the ceiling radiation panel 9 during cooling and only by the floor radiation panel 8 during heating.

In the air conditioning system for cooling and heating, although the hot air outlet 6 and the cold air outlet 7 are not provided, the same air conditioning system as in the first embodiment is adopted, and the same comfort is provided. Will be kept. The same is true for air quality such as carbon dioxide.

According to the second embodiment, by not providing a cool air outlet on the ceiling surface, the ceiling portion is widened and the space is felt wide, and the weight of the ceiling is reduced, so that the burden on the vehicle body is reduced. There is an advantage that the number is reduced.

Embodiment 3 FIG. The operation of this embodiment is
Referring to FIG. In the figure, 1 is a vehicle body having a space in a vehicle of a train such as a commuter train, 2 is an entrance for passengers to get on and off, 3 is a window, 4 is a seat arranged along a wall surface, and 5 is provided on a ceiling portion. The ventilating vent 9 is a radiation panel on the ceiling.

On routes where both the cooling load and the heating load are relatively small, only the ceiling radiant panel 9 can be used for cooling, and the heater 10 and the ceiling radiant panel 9 provided below the seat can be used for heating to cover the air conditioning load. become.

The air conditioning system for cooling and heating does not include the hot air outlet 6, the cold air outlet 7, and the radiation panel 8, but employs the same air conditioning system as that of the first embodiment. Comfort is maintained.

The same applies to air quality such as carbon dioxide. However, during heating in this case, the sitting person is heated by the heater 10 below the seat, but the surface temperature of the ceiling radiation panel 9 is controlled in order to maintain the comfort of the standing person.

As in the second embodiment, by not providing a cool air outlet, the ceiling can be widened and the space can be felt wide. Further, the installation work and cost of the radiant panel can be eliminated by not providing the floor radiant panel. become. Further, since the weight is reduced, there is an advantage that the burden on the vehicle body is reduced.

[0031]

According to the first invention, the comfort of the thermal environment can be maintained by exerting the effect of the radiant air conditioning in addition to the air conditioning by the air blowing, and the comfort can be maintained irrespective of the fluctuation of the air temperature. The air conditioner can maintain a sufficient amount of ventilation and can quickly respond to a large number of standing passengers or large fluctuations in the air conditioning load due to passengers getting on and off or inflow of outside air. A vehicle air conditioner that does not give a pleasant feeling can be obtained.

According to the second aspect of the present invention, since the cool air outlet is not provided on the ceiling surface, the ceiling portion is widened and the space is felt wide, and the weight of the ceiling is reduced, so that the burden on the vehicle body is reduced. Thus, it is possible to obtain a vehicle air conditioner suitable for a route having a relatively low congestion degree.

According to the third aspect of the present invention, since the cool air outlet is not provided, the ceiling portion is widened and the space is felt wide, and the installation work and cost of the radiant panel are unnecessary because the floor radiating panel is not provided. In addition, it is possible to obtain a vehicle air conditioner suitable for a route where both the cooling load and the heating load are relatively small, which has an advantage that the weight of the vehicle body is reduced because the weight is reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a vehicle body cross section of a vehicle air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a configuration diagram showing a vehicle ceiling in the vehicle air conditioner according to Embodiment 1 of the present invention.

FIG. 3 is a configuration diagram showing a vehicle floor in the vehicle air conditioner according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of a vehicle air conditioner according to Embodiment 2 of the present invention.

FIG. 5 is a configuration diagram of a vehicle air conditioner according to Embodiment 3 of the present invention.

FIG. 6 is a configuration diagram of a seat of a conventional vehicle air conditioner.

FIG. 7 is a configuration diagram of a vehicle of a conventional vehicle air conditioner.

FIG. 8 is a characteristic diagram showing the relationship between the congestion degree in a train and the carbon dioxide concentration.

[Explanation of symbols]

1 vehicle body, 2 entrance and exit, 3 windows, 4 seats, 5 ventilation vent, 6 hot air outlet, 7 cold air outlet, 8
Floor radiation panel, 9 ceiling radiation panel, 10 lower seat heater, 21 cold air outlet for seat in conventional vehicle air conditioning system, 22 hot air outlet for seat in conventional vehicle air conditioning system, 23 conventional air conditioning system for vehicle Seat air outlet.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B61D 27/00 B61D 27/00 DA

Claims (3)

[Claims] 1. A ceiling panel is provided with a radiant panel, a cool air outlet, and a ventilation vent, and a floor is provided with a warm air outlet and a radiant panel to perform air conditioning in a vehicle and to provide passengers in a space in the vehicle. An air conditioner for a vehicle, comprising: detecting means for detecting a change in an air conditioning load due to a change in the number of air conditioners, wherein the detecting means adjusts an ability of an air conditioner to air-condition the interior space of the vehicle and adjusts a ventilation rate. 2. A radiant panel and a ventilation vent are provided on a ceiling portion, and a radiant panel is provided on a floor surface to air-condition a vehicle. An air conditioner for a vehicle, comprising a detecting means for detecting, wherein when the load is small, the air conditioning load is covered only by the radiation panel. 3. A ceiling radiant panel and a ventilation vent are provided on a ceiling portion, and a seat heater is provided on a lower portion of a seat surface to perform air conditioning in the vehicle, and a change in air conditioning load due to a change in the number of passengers in the space inside the vehicle. An air conditioner for a vehicle, comprising: detecting means for detecting the air conditioner, wherein when the heating load is small, the air conditioning load is covered by the seat heater and the ceiling radiation panel.