JP6026141B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner, for example, for air conditioning a railway vehicle interior.

  The vehicle air conditioner performs heat exchange by blowing air to a heat exchanger using a blower. To the vehicle outdoor heat exchanger, the outdoor air blows outside air to exchange heat, and releases heat to the outside.

  In the conventional vehicle air conditioner, a wire mesh is stretched along the same surface as the vehicle body surface or a fixed louver is only attached to the air intake port for the outdoor fan.

  Therefore, the air intake for the outdoor blower is provided with a rectifying plate, an operating device for switching the direction of the rectifying plate, and a switch for detecting the direction of the traveling wind, and the direction of the air intake is determined based on the detection result of the switch. Has been proposed in which the direction of the rectifying plate is switched by an operating device so that is in the vehicle traveling direction (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 64-49412 (FIGS. 1 and 3)

  However, based on the detection result of the switch that detects the wind direction of the traveling wind, the direction of the rectifying plate is switched and the direction of the air intake port is a constant angle that faces the vehicle traveling direction. Not only is it complicated, but when the vehicle's traveling speed increases, the wind pressure of the traveling wind increases the resistance when the wind is introduced and discharged, which may hinder the ventilation of the outdoor fan to the outdoor heat exchanger. It was.

  The present invention has been made to solve the above-described problems, and suppresses a decrease in the amount of air introduced into the outdoor heat exchanger of the outdoor fan even when the vehicle traveling speed increases with a simple configuration. It is possible to obtain a vehicle air conditioner that can increase the air blowing efficiency and the air flow rate of an outdoor fan.

An air conditioner for a vehicle according to the present invention includes a vent on the vehicle body surface side, and includes an outdoor unit that houses an outdoor fan that generates an air flow inside. A plurality of free oscillating flow rectifying plates having an oscillation center as an axis arranged in a direction perpendicular to the vehicle traveling direction are disposed in the vehicle traveling direction . It is a suction port of the outdoor blower, and each of the free oscillating type rectifying plates has an outer end portion pivotally supported on a peripheral wall portion of the suction port .

In the vehicle air conditioner according to the present invention, each of the freely oscillating flow rectifying plates disposed in the vent is inclined by the acceleration force during traveling of the vehicle, the wind direction of the traveling wind, and the strength of the wind. Thus, the inclination angle is adjusted. That is, when the vehicle traveling speed increases, the inclination angle of each rectifying plate is automatically adjusted in accordance with the change in the vehicle traveling speed and the change in the wind direction and the strength of the traveling wind. For this reason, the fall of the external air introduction | transduction air volume to the outdoor heat exchanger of an outdoor air blower can be suppressed, and the ventilation efficiency of an outdoor air blower and an air flow rate can be improved.
Further, a free-swinging type rectifying plate having a swing centered on an axis arranged in a direction orthogonal to the vehicle traveling direction is provided in the vehicle traveling direction at a vent formed on the vehicle body surface side outside the outdoor. With a simple configuration with only a plurality of arrangements, it is possible to obtain a mechanism that can automatically adjust each rectifying plate to an inclination according to the acceleration force during traveling of the vehicle, the wind direction of the traveling wind, and the strength of the wind, Cost can be reduced.

It is sectional drawing which follows the direction orthogonal to the vehicle advancing direction of the outdoor part of the vehicle air conditioner which concerns on Embodiment 1 of this invention. It is sectional drawing which follows the vehicle advancing direction of the outdoor part of the air conditioning apparatus for vehicles which concerns on Embodiment 1 of this invention. It is an enlarged view of the A section (rectifier plate and stopper part) of FIG. It is an enlarged view when the vehicle advancing direction in the A section (rectifier plate and stopper section) in FIG. 2 is reversed. It is sectional drawing which follows the vehicle advancing direction of the outdoor part of the air conditioning apparatus for vehicles which concerns on Embodiment 2 of this invention. It is a block diagram of the air conditioning apparatus for vehicles which concerns on Embodiment 4 of this invention.

Embodiment 1. FIG.
FIG. 1 is a cross-sectional view taken along a direction perpendicular to the vehicle traveling direction outside the outdoor air conditioner for a vehicle according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the vehicle air conditioner according to Embodiment 1 of the present invention along the vehicle traveling direction outside the room.
1 and 2, reference numeral 1 denotes the outside of an air conditioner installed in a form embedded in the ceiling of a vehicle body of, for example, a railway vehicle (train) that travels at a high speed. The outdoor exterior 1 is covered with an outdoor cover 2 on the upper surface (vehicle body surface side), the outdoor cover 2 is provided with a suction port 5 serving as a vent, and a plurality of freely oscillating flow straightening plates 8 are arranged in the suction port 5. It is installed. In addition, the outdoor cover 2 is provided with cover-side exhaust ports 4 serving as vent holes on both sides in the sleeper direction with the suction port 5 interposed therebetween. Further, side exhaust ports 3 are also provided on both side surfaces of the outdoor 1 in the sleeper direction. In addition, an outdoor blower 7 for introducing cooling air is provided in the outdoor exterior 1 so as to be located inside the suction port 5, and between the outdoor blower 7 and the exhaust ports 3 and 4 on both sides. The outdoor heat exchangers 6 are arranged obliquely at the corners of the air passages between the outdoor fan 7 and the exhaust ports 3 and 4 on both sides of the outdoor fan 7 at the downstream side of the cooling air flow. . The suction port 5 is substantially a suction port for the outdoor blower 7. Also, the vehicle body surface (vehicle surface side) means a part that is directly affected by the driving wind. If the air vent is flush with the car body outline, the car body outer part where the air vent is formed In the case where the vent is formed so as to protrude from the outer shell of the vehicle body, the surface of the protruding portion is shown.
1 indicates the flow of cooling air sucked by the outdoor blower 7, and the arrow 13 indicates the flow of exhaust air exhausted outside the air conditioner. Moreover, the white arrow in FIG. 2 (and FIGS. 3-5 mentioned later) has shown the vehicle (train) advancing direction.

FIG. 3 is an enlarged view of a portion A (rectifying plate and stopper portion) of FIG. FIG. 4 is an enlarged view when the traveling direction of the vehicle (train) in the A portion (rectifier plate and stopper portion) of FIG. 2 is reversed.
As shown in FIG. 3 and FIG. 4, each of the free oscillating flow straightening plates 8 has an outer end portion (here, an upper end portion) in a direction perpendicular to the vehicle traveling direction (here, a sleeper direction). A plurality of shafts 20 are rotatably supported on the peripheral wall portion of the suction port 5 and are arranged in parallel in the vehicle traveling direction. In addition, a plurality of stoppers 9 are provided for restricting the inclinations corresponding to the respective rectifying plates 8 so that the suction ports 5 are not blocked by the respective rectifying plates 8.

  With such a configuration, when the outdoor blower 7 is operated when the vehicle is traveling, the cooling air 10 is introduced from the suction port 5 to the outdoor exterior 1, passes through the rectifying plate 8, the outdoor blower 7, and the outdoor heat exchanger 6, The air is exhausted from the exhaust port 3 and the cover side exhaust port 4 to the outside of the air conditioner. At this time, each rectifying plate 8 whose upper end portion is rotatably supported by the peripheral wall portion of the suction port 5 via each shaft 20 in a direction orthogonal to the vehicle traveling direction (sleeper direction) Depending on the force, the wind direction of the traveling wind, and the wind strength, the lower end of the current plate, which is the free end, swings and tilts in the direction opposite to the traveling direction of the vehicle. That is, the direction of the suction port of the outdoor blower 7 is the vehicle traveling direction (the windward side of the traveling wind). In this state, the cooling air 10 introduced from the suction port 5 to the outdoor side 1 is smoothly guided to the outdoor blower 7 by the inclination of each rectifying plate 8. When the vehicle travel speed increases, the inclination angle of each rectifying plate 8 is automatically adjusted according to the change in the vehicle travel speed and the change in the wind direction and the strength of the wind. For this reason, even when the vehicle traveling speed increases, it is possible to suppress a decrease in the amount of outside air introduced into the outdoor heat exchanger 6 of the outdoor blower 7 and to increase the blowing efficiency and the blowing amount of the outdoor blower 7.

  In addition, with a simple configuration in which a plurality of free-swinging rectifying plates 8 are provided in the suction port 5 formed on the vehicle body surface side of the outdoor 1, each rectifying plate 8 is accelerated during vehicle travel. Since a mechanism capable of automatically adjusting the inclination according to the change in the force, the wind direction of the traveling wind, and the strength of the wind is obtained, the cost can be reduced.

  Further, since a plurality of stoppers 9 are provided to limit the inclination of the current plate 8 so as not to be excessively inclined, it is possible to prevent the suction port 5 from being blocked and obstructing the blowing. be able to.

  When the traveling direction of the vehicle is reversed as shown in FIG. 4, each of the free oscillating type rectifying plates 8 has its traveling acceleration force, the wind direction of the traveling wind, and the wind strength, respectively. The lower end side of the rectifying plate, which is a free end, swings and tilts in the direction opposite to the traveling direction of the vehicle, and the direction of the suction port of the outdoor blower 7 becomes the traveling direction of the vehicle (the windward side of the traveling wind). Therefore, even if the traveling direction of the vehicle is reversed, the cooling air 10 introduced into the outdoor unit 1 can be smoothly guided to the outdoor fan 7 by the tilting operation of each rectifying plate 8 as described above.

Embodiment 2. FIG.
FIG. 5 is a cross-sectional view of the vehicle air conditioner according to Embodiment 2 of the present invention along the vehicle traveling direction outside the room. In the figure, the same reference numerals are given to the same functional parts as those of Embodiment 1 described above. is there.
In the vehicle air conditioner according to the second embodiment of the present invention, the outdoor air blower 7 is arranged on the downstream side of the cooling air flow of the outdoor heat exchanger 6 (see FIG. 1), and the heat is exchanged by the outdoor heat exchanger 6. Are exhausted as exhaust air 13 from the air outlet of the outdoor blower 7, that is, the air outlet 12 serving as a vent. The outlet 12 is disposed on the upper surface of the vehicle (the vehicle body surface side), and a plurality of free-swinging rectifying plates 11 are disposed therein. Each of the free oscillating flow straightening plates 8 has an inner end (here, the lower end) via a shaft 20 arranged in a direction perpendicular to the vehicle traveling direction (here, the sleeper direction). 12 are rotatably supported on the peripheral wall portion, and a plurality of them are arranged in parallel in the vehicle traveling direction. In addition, a plurality of stoppers 9 are provided for restricting the inclinations corresponding to the respective rectifying plates 11 so that the outlets 12 are not blocked by the respective rectifying plates 11.

  In the vehicle air conditioner according to Embodiment 2 of the present invention, when the outdoor blower 7 is operated, the air exhausted from the outdoor 1 passes through the rectifying plate 11 and is exhausted as the exhaust air 13 from the outlet 12. The At this time, each rectifying plate 11 whose lower end is rotatably supported by the outlet 12 via each axis 20 in a direction orthogonal to the vehicle traveling direction (sleeper direction) Depending on the wind direction, the upper end side of the current plate, which is a free end, swings and tilts in the direction opposite to the traveling direction of the vehicle until it comes into contact with the stopper 9. Thereby, a negative pressure region is generated outside each rectifying plate 11, and the exhaust air 13 is sucked out by the ejector effect, so that the discharge effect can be improved. For this reason, the exhaust air 13 exhausted from the outlet 12 can be smoothly guided to the outside of the air conditioner by the inclination of the rectifying plate 11. As a result, the cooling air can be smoothly introduced into the outdoor portion 1 on the cooling air suction side, and even when the vehicle traveling speed is increased, the outdoor air introduction air amount to the outdoor heat exchanger 6 by the outdoor fan 7 is increased. Can be suppressed, and the blowing efficiency and the blowing amount of the outdoor blower 7 can be increased.

  When the traveling direction of the vehicle is reversed, each free swing type rectifying plate 11 has its upper end side, which is the free end, touches the stopper 9 depending on the traveling acceleration force of the vehicle and the wind direction of the traveling wind. Until it touches, it tilts swinging in the direction opposite to the direction of travel of the vehicle. As a result, a negative pressure region is generated outside each rectifying plate 11 as described above, and the exhaust air 13 is sucked out by the ejector effect, so that the exhaust effect can be improved. That is, even if the traveling direction of the vehicle is reversed, the exhaust air 13 exhausted from the air outlet 12 can be smoothly guided to the outside of the air conditioner by the tilting operation of each rectifying plate 11, and thus the cooling air Also on the suction side, the cooling air can be smoothly introduced into the outdoor unit 1.

Embodiment 3. FIG.
In the first embodiment described above, the case where the rectifying plate 8 is attached only to the suction port 5 has been described as an example. However, the exhaust ports 3 and 4 (particularly, the cover-side exhaust port 4 on the vehicle body surface side) It is also possible to attach a similar rectifying plate 11 and to smoothly exhaust the exhaust air 13 to the outside of the air conditioner. In this case, both the effects of the first embodiment and the second embodiment can be obtained, and the blowing efficiency and the blowing amount of the outdoor blower 7 can be further increased.

Embodiment 4 FIG.
FIG. 6 is a configuration diagram of a vehicle air conditioner according to Embodiment 4 of the present invention. In the drawing, the same reference numerals are given to the same functional portions as those of Embodiment 1 described above.
In the first embodiment described above, the outer end portion (upper end portion) of each rectifying plate 8 is rotatably supported by the peripheral wall portion of the suction port 5 via each shaft 20, so that the traveling acceleration force and the traveling wind of the vehicle are increased. Although the description has been given by taking as an example the case where the lower end side of the rectifying plate, which is the free end of each rectifying plate 8, swings in the direction opposite to the traveling direction of the vehicle according to the wind direction and the strength of the wind, It is also possible to adopt a forced drive system in which the inclination angle of each rectifying plate 8 can be finely adjusted according to the travel acceleration force, the wind direction of the travel wind, and the wind strength.

  In this case, as shown in FIG. 6, a drive mechanism 21 that rotates each shaft 20 of each rectifying plate 8 based on the command value, an acceleration sensor 22 that detects the traveling acceleration force of the vehicle, and a wind direction during traveling of the vehicle Based on the wind direction anemometer 23 that detects the wind speed, the travel acceleration force detected by the acceleration sensor 22 and the wind direction and wind strength during vehicle travel detected by the wind direction anemometer 23, the swing angle of each rectifying plate 8 is obtained. And a control device 24 for instructing the drive mechanism 21. Each sensor, that is, the acceleration sensor 22, the anemometer 23, and the control device 24 are connected via a sensor connection cable 25. Further, each drive mechanism 21 and the control device 24 are connected via a connection cable 26 for the drive mechanism. The relationship between the travel acceleration force, the wind direction when the vehicle travels, the wind strength, and the inclination angle of each rectifying plate 8 may be obtained in advance and stored in the control device as a table. As a result, it is possible to finely adjust the inclination angle of each rectifying plate 8 and to control the inclination angle in consideration of the return due to the inertial force of each rectifying plate 8.

  1 outdoor, 2 outdoor cover, 3 side exhaust port (ventilation port), 4 cover side exhaust port (ventilation port), 5 suction port (ventilation port), 6 outdoor heat exchanger, 7 outdoor blower, 8, 11 current plate , 9 Stopper, 10 Cooling air, 12 Air outlet (air vent), 13 Exhaust air, 20 axis, 21 Drive mechanism, 22 Acceleration sensor, 23 Wind direction anemometer, 24 Control device, 25 Sensor connection cable, 26 Drive mechanism Connection cable.

Claims (3)

In a vehicle air conditioner having an outdoor part that has an outdoor fan that has a vent on the vehicle body surface side and generates an air flow inside,
A plurality of freely oscillating flow rectifying plates having an oscillation center as an axis arranged in a direction orthogonal to the vehicle traveling direction are arranged in the vehicle traveling direction at the vent hole outside the room .
The vent is a suction port of the outdoor fan,
The vehicular air conditioner, wherein each of the free oscillating flow straightening plates is pivotally supported by a peripheral wall portion of the suction port . In addition to the suction port on the vehicle body surface side, an exhaust port is provided,
Said free oscillating each rectifying plate of the vehicle according to claim 1, wherein the respective inner ends disposed in the exhaust port is pivotally supported on the peripheral wall of the exhaust port Air conditioner. The vehicle air conditioner according to claim 1 or 2 , further comprising a stopper that limits an inclination of each of the free oscillating flow straightening plates.

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