JP6845622B2 - Air conditioning ducts for vehicles and railcars - Google Patents

Description

The present invention relates to an air conditioning duct for a railway vehicle that supplies harmonious air from an air conditioner into a vehicle, and a railway vehicle including the air conditioning duct.

Conventionally, a vehicle air-conditioning duct that distributes harmonious air from an air-conditioning device and supplies it into the interior of a railway vehicle has been known. Patent Document 1 and Patent Document 2 disclose this type of air conditioning duct for railway vehicles.

The vehicle air-conditioning duct of Patent Document 1 extends in the vehicle length direction at the ceiling of the vehicle and is configured to supply harmonized air from the air-conditioning device into the vehicle interior. This vehicle air conditioning duct includes a main duct, a chamber duct, a branch duct, and a guide plate. The main duct is provided at a substantially central portion in the vehicle width direction to which harmonious air is supplied from the air conditioner. The chamber duct is a duct in which conditioned air from the main duct is supplied and blown out into the cabin, and is provided adjacent to the main duct in the vehicle width direction. The branch duct is a duct in which conditioned air from the main duct is supplied and blown out into the passenger compartment, and is provided on the vehicle end side with respect to the chamber duct in the vehicle length direction. The guide plate draws a part of the conditioned air supplied to the main duct into the branch guide. In this vehicle air-conditioning duct, the amount of harmonious air supplied from the chamber duct into the cabin is configured to be larger than the amount of harmonious air supplied from the branch duct into the cabin. In this way, Patent Document 1 provides a vehicle air-conditioning duct in a limited space by configuring the conditioned air to be blown out to the central part in the vehicle length direction with a larger amount of blowing air than the vehicle end part. Even if the shape of the vehicle air-conditioning duct is restricted due to the arrangement, it is possible to make the temperature distribution in the cabin uniform by making the amount of harmonious air blown out different in each area in the cabin.

The vehicle air-conditioning duct of Patent Document 2 is configured to distribute the cold air from the air conditioner into the cabin by the cold air duct and the cold air discharge grill attached to the cold air duct. Patent Document 2 discloses an example in which the structure of the cold air discharge grill includes an air volume adjusting plate configured to have a predetermined appropriate opening degree and a wind direction changing piece.

International Publication No. 2013/111417 JP-A-55-79952

In the configuration of Patent Document 1, the direction of a part of the conditioned air flowing through the main duct is changed by the guide plate, and after being drawn into the branch duct, it is substantially opposite to the conditioned air before being guided by the guide plate. It flows in the direction of the branch duct. Due to such a reversing action, the conditioned air immediately after being supplied to one end in the longitudinal direction of the branch duct (the conditioned air on the upstream side, the conditioned air immediately after reversing) flows vigorously toward the other end in the longitudinal direction. As it approaches the other end, its momentum tends to gradually weaken. Therefore, when the conditioned air flowing through the branch duct is simply blown out from the blowout passage arranged over the entire length of the branch duct to the lower cabin, as shown in FIG. 15, the side closer to the guide plate (upstream side). It becomes difficult for the conditioned air to reach the part directly below the end of the branch duct. Therefore, in the configuration of Patent Document 1, the effect of air conditioning tends to be non-uniform in the vehicle length direction in the range where the branch duct is arranged.

Further, in the configuration of Patent Document 2, it is considered that cold air can be positively diffused by a plurality of wind direction changing pieces arranged at slightly different angles, but these wind direction changing pieces are arranged in the vehicle length direction. The wind direction is changed in each of the many cold air discharge grills provided side by side. The air volume from each discharge grill can be adjusted by the air volume adjusting plate, but as pointed out in Patent Document 2, it is very difficult to experimentally determine and adjust the opening degree of the air volume adjusting plate in each discharge grill. It's a hassle. Moreover, it is difficult to satisfactorily distribute the cold air downward in the portion between the discharge grill and the portion (the portion without the discharge grill). As described above, even with the configuration of Patent Document 2, it was difficult to make the effect of air conditioning uniform in the vehicle length direction.

As described above, the configurations of Patent Document 1 and Patent Document 2 have room for improvement in that non-uniform parts are likely to occur in the air conditioning effect in the guest room.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioning duct for a railway vehicle capable of making the air conditioning effect in a passenger room uniform with a simple configuration.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem and its effect will be described.

According to the viewpoint of the present invention, an air conditioning duct for a railway vehicle having the following configuration is provided. That is, the railroad vehicle air-conditioning duct is installed on the ceiling of the railroad vehicle so as to extend in the vehicle length direction, and supplies harmonious air adjusted by the air-conditioning device into the passenger compartment. This railroad vehicle air conditioning duct includes a main duct, a chamber duct, a branch duct, a guide portion, a blowout passage, and a wind direction plate. The harmonized air is supplied to the main duct from the air conditioner. The chamber duct is arranged adjacent to the vehicle width direction end of the main duct, and the conditioned air is supplied from the main duct. The branch duct is arranged on the end side in the vehicle length direction with respect to the chamber duct, and the conditioned air is supplied from the main duct. The guide portion is provided in the main duct, and changes the direction in which a part of the harmonious air supplied from the air conditioner to the main duct flows to guide the part of the harmonious air to the branch duct. The outlet passage is arranged over the entire length of the branch duct, and allows the conditioned air flowing in the branch duct in the opposite direction to the conditioned air before being guided by the guide portion in the cabin located below the main duct. Is supplied from the branch duct. The wind direction plate is positioned at least in the blowing passage, the conditioned air flows inverted with respect to blowing direction from the air conditioning system by the guide portion flows obliquely downward downward is closer to the guide portion As described above, the direction in which the conditioned air flows is guided. The end portion of the wind direction plate in the vehicle width direction is inclined so as to approach the guide portion side as the distance from the branch duct increases in the vehicle width direction in a plan view.

As a result, the conditioned air can be satisfactorily reached immediately below the longitudinal end of the branch duct on the side to which the conditioned air guided by the guide portion is supplied in the cabin. As a result, the air conditioning effect in the guest room can be substantially made uniform with a simple configuration.

According to the present invention, it is possible to provide an air conditioning duct for a railway vehicle capable of making the air conditioning effect in a passenger room uniform with a simple configuration.

The side view which shows the railroad vehicle which comprises the air-conditioning duct for a vehicle which concerns on 1st Embodiment of this invention. The plan view which shows the overall structure of the air conditioning duct for a vehicle. (A) Cross-sectional view taken along the line AA of FIG. (B) Cross-sectional view taken along the line BB of FIG. The perspective view which shows the state in the vicinity of the front branch duct. A plan view showing the vicinity of the front branch duct. A side view showing the state near the front branch duct. A graph explaining the temperature distribution of the guest room directly under the blowout opening with and without the wind direction plate. The side view which shows another installation example which does not incline the wind direction plate. A side view showing another installation example in which the inclinations of the wind direction plates are the same. A side view showing another installation example in which the wind direction plate is partially omitted. The plan view which shows the overall structure of the air-conditioning duct for a vehicle which concerns on 2nd Embodiment. The plan view which shows the overall structure of the air-conditioning duct for a vehicle which concerns on 3rd Embodiment. The plan view which shows the overall structure of the air-conditioning duct for a vehicle which concerns on 4th Embodiment. The front view which shows the deformation example which made the shape of a blow-out passage different. The plan view explaining the blowing direction of the conditioned air in the conventional structure.

Next, the first embodiment of the present invention will be described with reference to the drawings. First, an outline of a railway vehicle (vehicle) 1 including the vehicle air-conditioning duct 12 of the present embodiment will be described mainly with reference to FIG. FIG. 1 is a side view showing a railroad vehicle 1 provided with a vehicle air-conditioning duct 12 according to the first embodiment of the present invention.

The railway vehicle 1 shown in FIG. 1 is configured as a passenger vehicle. The railroad vehicle 1 includes a vehicle body 2 and a bogie 3.

The vehicle body 2 is configured in a substantially box shape, and includes a guest room 4 and a ceiling portion 5. Although the vehicle body 2 of the present embodiment is made of an aluminum alloy, it may be made of another material (for example, carbon steel or stainless steel).

The guest rooms 4 are arranged from the lower part to the central part of the vehicle body 2 over the entire length direction of the vehicle body 2. The guest room 4 is provided with illustrated seats, aisles, and the like for passengers to use.

The ceiling portion 5 is arranged on the upper portion of the vehicle body 2 over the entire length direction of the vehicle body 2. The ceiling portion 5 is located above the guest room 4. A vehicle air conditioning system 10 including an air conditioner (air conditioner) 11 and a vehicle air conditioning duct 12 is provided on the ceiling portion 5.

One air conditioner 11 is arranged near both ends in the vehicle length direction on the ceiling portion 5. The air conditioner 11 has functions such as air conditioning, ventilation, dehumidification, and air purification, and can maintain the interior of the guest room 4 in a comfortable environment. In the following description, the two air conditioners 11 may be distinguished and referred to as a first air conditioner 11a and a second air conditioner 11b, respectively.

The vehicle air conditioning duct 12 is installed on the ceiling 5 so as to extend in the vehicle length direction. The vehicle air conditioning duct 12 is a pipe for sending the harmonious air adjusted by the air conditioner 11 to the guest room 4, and is arranged so as to connect the air conditioner 11 and the inside of the guest room 4.

The bogie 3 is arranged below the railroad vehicle 1 and supports the vehicle body 2. The carriage 3 is provided with wheels for traveling on rails (not shown).

Next, the outline of the vehicle air conditioning duct 12 will be described with reference to FIGS. 2 and 3. FIG. 2 is a plan view showing the overall configuration of the vehicle air conditioning duct 12. FIG. 3A is a cross-sectional view taken along the line AA of FIG. FIG. 3B is a cross-sectional view taken along the line BB of FIG.

As described above, the vehicle air conditioner system 10 provided on the ceiling portion 5 of the railcar 1 includes two air conditioners 11 (the first air conditioner 11a and the second air conditioner 11b described above) and a vehicle air conditioner duct 12. , Equipped with.

As shown in FIG. 2, the first air conditioner 11a is arranged at the center in the vehicle width direction at one end in the vehicle length direction in the railway vehicle 1, and the second air conditioner 11b is a vehicle at the other end in the vehicle length direction. It is located in the center of the width direction. Each air conditioner 11 takes in the air in the guest room 4 from the air intake port (not shown) and generates conditioned air in which the temperature of the air is adjusted. The air conditioner 11 is connected to the vehicle air conditioning duct 12 via a delivery pipe 20. The harmonious air generated by the air conditioner 11 is sent to the vehicle air conditioning duct 12 through the delivery pipe 20.

The vehicle air-conditioning duct 12 is composed of a plurality of ducts (pipes) described below, and includes blowout passages 40 (40a, 40b, 40c) connected to the cabin 4 as shown in FIG. The harmonious air sent from the air conditioner 11 to the vehicle air-conditioning duct 12 passes through the blowout passage 40 and is supplied to the guest room 4.

As shown in FIG. 2, the vehicle air conditioning duct 12 has one main duct 21, two chamber ducts 22 (first chamber duct 22a and second chamber duct 22b), and two front positions. Branch duct (branch duct) 23 (first front branch duct 23a and second front branch duct 23b) and two rear branch ducts 24 (first rear branch duct 24a and second rear branch duct 24b). And.

The main duct 21 is formed in a rectangular shape elongated in the vehicle length direction in a plan view, and is arranged so as to be sandwiched between the first air conditioner 11a and the second air conditioner 11b at the central portion in the vehicle length direction of the railway vehicle 1. There is. One end of the main duct 21 in the vehicle length direction is connected to the first air conditioner 11a via the delivery pipe 20, and the other end of the main duct 21 in the vehicle length direction is connected to the second air conditioner 11b via the delivery pipe 20. It is connected.

Inside the main duct 21, a partition plate 25 is provided so as to connect the diagonal positions of the main duct 21 formed in a rectangular shape to each other. By the partition plate 25, the main duct 21 is composed of the main duct first chamber 21a to which the conditioned air is sent from the first air conditioner 11a and the main duct second chamber 21b to which the conditioned air is sent from the second air conditioner 11b. It is divided into two spaces.

The chamber duct 22 is formed in a rectangular shape elongated in the vehicle length direction in a plan view. The length of the chamber duct 22 in the vehicle length direction is shorter than the length of the main duct 21 in the vehicle length direction. The two chamber ducts 22 (first chamber duct 22a and second chamber duct 22b) are arranged on both sides in the vehicle width direction so as to sandwich the main duct 21. The first chamber duct 22a is adjacent to the first chamber 21a of the main duct formed in the main duct 21, and the second chamber duct 22b is adjacent to the second chamber 21b of the main duct formed in the main duct 21. The chamber duct 22 and the main duct 21 are connected to each other by a plurality of openings 30 formed side by side in the longitudinal direction of the chamber duct 22. The conditioned air sent to the main duct 21 passes through the opening 30 and reaches the chamber duct 22.

As shown in FIG. 3A, a blowout passage 40a connected to the guest room 4 is connected to the lower part of the chamber duct 22. The conditioned air that has reached the chamber duct 22 passes through the blowout passage 40a and is supplied to the guest room 4. Two outlet passages 40a are arranged for each of the first chamber duct 22a and the second chamber duct 22b, and both are provided over the entire length direction of the chamber duct 22. The blowout passage 40a has a cross section cut in a plane perpendicular to the vehicle length direction so that one faces the central portion in the vehicle width direction in the passenger compartment 4 and the other faces one end in the vehicle width direction in the passenger compartment 4. All of them are arranged in a straight line diagonally downward. As a result, the conditioned air can be satisfactorily diffused in the guest room 4.

The front branch duct 23 is formed in a rectangular shape elongated in the vehicle length direction in a plan view, and the width of the front branch duct 23 is substantially equal to the width of the chamber duct 22. The front branch duct 23 is arranged on one side in the vehicle length direction with respect to the chamber duct 22. Specifically, the first front branch duct 23a is arranged closer to the first air conditioner 11a than the first chamber duct 22a, and the second front branch duct 23b is the second chamber duct 22b. In comparison, it is arranged on the side closer to the second air conditioner 11b. Further, the front branch duct 23 is arranged on one side in the vehicle width direction with respect to the air conditioner 11.

The end of each front branch duct 23 on one side in the longitudinal direction (center side in the vehicle length direction) is located at the end of the main duct 21 on one side in the vehicle width direction in the vicinity of the end in the vehicle length direction. It is arranged so that it touches. The front branch duct 23 and the main duct 21 are connected to each other by an opening 31. Further, inside the main duct 21, a guide plate (guide portion) for drawing the conditioned air into the front branch duct 23 by changing the direction in which a part of the conditioned air of the main duct 21 flows near the opening 31. 26 is provided. A part of the conditioned air sent to the main duct 21 passes through the opening 31 by the guidance of the guide plate 26 and reaches the front branch duct 23.

As shown in FIG. 3B, a blowout passage 40b connected to the guest room 4 is connected to the lower part of the front branch duct 23. The configuration of the blowout passage 40b is the same as that of the blowout passage 40a connected to the chamber duct 22. The conditioned air that has reached the front branch duct 23 passes through the outlet passage 40b and is supplied into the guest room 4 located below the main duct 21.

As shown in FIG. 2, the guide plate 26 is provided in each of the main duct first chamber 21a and the main duct second chamber 21b formed in the main duct 21. The guide plate 26 is located on the inner wall of the vehicle width direction end of the main duct first chamber 21a (main duct second chamber 21b) from a position corresponding to one end in the longitudinal direction of the front branch duct 23 to the vehicle width direction center side. After projecting, it is curved and its tip becomes a first air conditioner 11a that supplies conditioned air to the main duct first chamber 21a (a second air conditioner 11b that supplies conditioned air to the main duct second chamber 21b). It is formed in a smooth curved shape (arc shape) so as to approach. As a result, a part of the conditioned air sent from the air conditioner 11 to the main duct 21 is drawn into the front branch duct 23 through the opening 31 while being changed in direction by the guide plate 26, and the initial direction is 180. ° It flows in different directions along the longitudinal direction of the front branch duct 23.

Like the front branch duct 23, the rear branch duct 24 is formed in a rectangular shape elongated in the vehicle length direction in a plan view, and the width of the rear branch duct 24 is substantially equal to the width of the chamber duct 22. The rear branch duct 24 is arranged on the opposite side of the chamber duct 22 from the front branch duct 23. Specifically, the first rear branch duct 24a is arranged on the side farther from the first air conditioner 11a as compared with the first chamber duct 22a, and the second rear branch duct 24b is the second chamber duct 22b. In comparison, it is arranged on the side farther from the second air conditioner 11b. The rear branch duct 24 and the main duct 21 are connected to each other by an opening 32. The conditioned air sent to the main duct 21 passes through the opening 32 and reaches the rear branch duct 24.

As shown in FIG. 3B, a blowout passage 40c is connected to the lower part of the rear branch duct 24. The configuration of the blowout passage 40c is the same as that of the blowout passage 40a connected to the chamber duct 22. The conditioned air that has reached the rear branch duct 24 passes through the outlet passage 40c and is supplied to the guest room 4.

As described above, the conditioned air generated by the air conditioner 11 reaches any one of the chamber duct 22, the front branch duct 23, and the rear branch duct 24 after being sent to the main duct 21. , Is supplied into the guest room 4 from the outlet passage 40 (40a, 40b, or 40c) arranged below the duct.

Next, the wind direction plate 42 that guides the flow of the conditioned air in the blowout passage 40b connected to the front branch duct 23 will be described with reference mainly to FIGS. 4 to 7. FIG. 4 is a perspective view showing a state in the vicinity of the front branch duct 23. FIG. 5 is a plan view showing the vicinity of the front branch duct 23. FIG. 6 is a side view showing a state in the vicinity of the front branch duct 23. FIG. 7 is a graph for explaining the temperature distribution in the cabin 4 directly below the blowout passage 40b with and without the wind direction plate 42.

In the following description, the upstream when the conditioned air supplied to the front branch duct 23 flows along the longitudinal direction of the front branch duct 23 before flowing into the outlet passage 40b is referred to as “upstream in the duct longitudinal direction”. And downstream may be referred to as "downstream in the longitudinal direction of the duct", respectively.

As shown in FIG. 4 and the like, the blowout passage 40b is provided over the entire length direction of the front branch duct 23. A blowout opening 41 is formed at the lower end of the blowout passage 40b. Further, as described above, the blowout passages 40b are arranged in a pair, and when viewed in the vehicle length direction, they are obliquely oriented so as to be separated from each other as they go downward. As a result, the conditioned air that has passed through the opening 31 from the main duct 21 and reached the front branch duct 23 flows from the upstream in the longitudinal direction of the duct to the downstream in the longitudinal direction of the duct, and is distributed and supplied to the pair of outlet passages 40b. Will be done. The conditioned air that has flowed into the blowout passage 40b passes through the blowout opening 41 and is supplied to the guest room 4.

By the way, as described above, the conditioned air that has flowed from the main duct 21 into the front branch duct 23 has its flow direction changed by 180 ° as compared with the initial direction. Therefore, in the front branch duct 23, the conditioned air flows rapidly toward the downstream side in the longitudinal direction of the duct on the upstream side in the longitudinal direction of the duct immediately after the flow is reversed, but when approaching the downstream side in the longitudinal direction of the duct, such air flows. The flow in the direction of the vehicle length tends to weaken. Therefore, when the harmonized air is simply blown out from the blowout passage 40b as in the conventional vehicle air conditioning duct 12p of FIG. 15, the harmonized air blown out into the cabin 4 through the blowout passage 40b from the portion upstream in the longitudinal direction of the duct is particularly emitted. , The direction is diagonal so that it is on the downstream side in the longitudinal direction of the duct. Therefore, in the guest room 4, it becomes difficult for the harmonious air to reach the portion directly below the upstream end of the front branch duct 23 in the longitudinal direction of the duct, and the effect of air conditioning becomes non-uniform.

Therefore, in the present embodiment, as shown in FIG. 4 and the like, a plurality of wind direction plates 42 for changing the flow of the conditioned air are provided in the blowout passage 40b.

As shown in FIG. 4 and the like, the wind direction plates 42 are formed in a flat plate shape, and are arranged side by side at substantially constant intervals in each of the pair of blowout passages 40b. With this configuration, the conditioned air flowing through the front branch duct 23 passes through the space partitioned by the blowout passage 40b and is sent to the guest room 4. The wind direction plate 42 of the present embodiment is made of stainless steel or an aluminum alloy, but may be made of another material such as resin.

As shown in FIG. 6, each wind direction plate 42 tilts from the direction perpendicular to the longitudinal direction of the front branch duct 23 to the downstream side in the longitudinal direction of the duct when viewed along the vehicle width direction (side view). It is arranged at an angle to. Further, the inclination of each wind direction plate 42 is gradually changed so that the upstream side in the longitudinal direction of the duct is gentle and the downstream side in the longitudinal direction of the duct is steep. Specifically, assuming that the angle (acute angle side angle) formed by the wind direction plate 42 with respect to the horizontal plane in the side view is S1, S2, S3, ... In order from the wind direction plate 42 on the upstream side in the longitudinal direction of the duct. S1 <S2 <S3 <...

With the above configuration, the conditioned air sent from the front branch duct 23 to the blowout passage 40b is directed by the wind direction plate 42 along the wind direction plate 42 (specifically, the lower side is closer to the guide plate 26). It is guided to flow diagonally downward). Further, by gradually increasing the angles S1, S2, S3, ... Formed by the wind direction plate 42 with respect to the horizontal plane, as shown in FIG. 6, in the guest room 4, the front branch duct 23 A relatively large amount of conditioned air can reach the portion directly below the upstream end in the longitudinal direction of the duct. As a result, the substantial effect of air conditioning can be made uniform throughout the longitudinal direction of the front branch duct 23.

Next, an experiment conducted to confirm the effect of the present invention will be described with reference to the graph of FIG. FIG. 7A shows the temperature distribution measured in the guest room 4 directly below the front branch duct 23, respectively, in the case where cooling is performed and FIG. 7B shows the case where heating is performed. There is.

As shown by the broken line in the graph of FIG. 7, in the configuration of FIG. 15 without the wind direction plate 42, the temperature changes significantly between the upstream side in the longitudinal direction of the duct and the downstream side in the longitudinal direction of the duct. On the other hand, when a plurality of wind direction plates 42 are provided while changing the angles S1, S2, S3, ... As shown in FIG. 6, the temperature is constant from the upstream side in the longitudinal direction of the duct to the downstream side in the longitudinal direction of the duct. , It is shown that the air conditioning effect can be exhibited uniformly.

Further, as shown in FIG. 8, the angles S1, S2, S3, ... Of the wind direction plate 42 with respect to the horizontal plane are not changed between the upstream side in the duct longitudinal direction and the downstream side in the duct longitudinal direction, and the wind direction plate 42 is in front of each other. It is also possible to have a simple configuration in which the orientation is perpendicular to the longitudinal direction of the position branch duct 23 (that is, S1 = S2 = S3 = ... = 90 °). Even in the configuration in which the conditioned air is guided so as to flow vertically downward, as shown by the alternate long and short dash line in FIG. 7, the non-uniformity of the temperature distribution can be eliminated to a certain extent.

Further, as shown in FIG. 9, the plurality of wind direction plates 42 may all be inclined at the same angle (that is, S1 = S2 = S3 = ... <90 °).

In addition, for example, as shown in FIG. 10, the wind direction plate 42 may be arranged only in a part of the front branch duct 23 in the longitudinal direction (preferably, a part including the upstream side in the longitudinal direction of the duct). The configuration in which a part of the wind direction plate 42 is omitted in this way can also be applied to the examples shown in FIGS. 8 and 9.

As described above, the vehicle air-conditioning duct 12 of the present embodiment is installed on the ceiling portion 5 of the railroad vehicle 1 so as to extend in the vehicle length direction, and the harmonious air adjusted by the air conditioner 11 is introduced into the guest room 4. Supply. The vehicle air conditioning duct 12 includes a main duct 21, a chamber duct 22, a front branch duct 23, a guide plate 26, a blowout passage 40b, and a wind direction plate 42. Harmonized air is supplied to the main duct 21 from the air conditioner 11. The chamber duct 22 is arranged adjacent to the end portion of the main duct 21 in the vehicle width direction, and conditioned air is supplied from the main duct 21. The front branch duct 23 is arranged on the end side in the vehicle length direction with respect to the chamber duct 22, and conditioned air is supplied from the main duct 21. The guide plate 26 is provided in the main duct 21 and changes the direction in which a part of the conditioned air supplied from the air conditioner 11 to the main duct 21 flows to guide the part of the conditioned air to the front branch duct 23. .. The outlet passage 40b is arranged over the entire length of the front branch duct 23, and positions the conditioned air flowing in the front branch duct 23 in the opposite direction to the conditioned air before being guided by the guide plate 26 below the main duct 21. It is supplied from the front branch duct 23 into the guest room 4. The wind direction plate 42 is arranged at least in the blowout passage 40b so that the conditioned air flows vertically downward (FIG. 8) or diagonally downward so that the lower side is closer to the guide plate 26 (FIGS. 6 and 9). And Fig. 10), the direction in which the conditioned air flows is guided.

As a result, the conditioned air can be satisfactorily reached in the passenger compartment 4 directly below the upstream end of the front branch duct 23 in the longitudinal direction of the duct. As a result, the air conditioning effect in the guest room 4 can be substantially made uniform with a simple configuration.

Further, in the vehicle air-conditioning duct 12 of the present embodiment, a plurality of wind direction plates 42 are arranged side by side in the longitudinal direction of the front branch duct 23. When the side in which the harmonized air is supplied from the main duct 21 in the longitudinal direction of the front branch duct 23 is the upstream side in the longitudinal direction of the duct, and the side opposite to the side in which the harmonized air is supplied is the downstream side in the longitudinal direction of the duct The angle formed by the wind direction plate 42 located on the upstream side in the longitudinal direction with respect to the horizontal plane is smaller than the angle formed by the wind direction plate 42 located on the downstream side in the longitudinal direction of the duct with respect to the horizontal plane (for example, S1 <S6 in FIG. 6). ..

As a result, in the guest room 4, the flow direction of the conditioned air is directed so that more conditioned air reaches the portion of the front branch duct 23 directly below the duct longitudinal direction upstream side than the portion directly below the longitudinal direction downstream side. It can be guided by the plate 42. As a result, it becomes easy to make the air conditioning effect in the guest room 4 substantially uniform.

Further, in the vehicle air-conditioning duct 12 of the present embodiment, the angle formed by the wind direction plate 42 with respect to the horizontal plane increases as the duct approaches from the upstream side in the longitudinal direction to the downstream side in the longitudinal direction of the duct (for example, S1 <in FIG. 6). S2 <S3 << ... <S6).

As a result, the direction in which the conditioned air flows from the outlet passage 40b into the cabin 4 can be gradually changed from the upstream side in the longitudinal direction of the duct to the downstream side in the longitudinal direction of the duct, for example, as shown in FIG. Therefore, the air conditioning effect can be finely and uniformly made.

Further, the railroad vehicle 1 of the present embodiment includes the above-mentioned vehicle air-conditioning duct 12 and an air conditioner 11 that supplies harmonious air to the vehicle air-conditioning duct 12.

That is, the configuration in which the uniformity of the air conditioning effect in the passenger compartment 4 can be easily improved as described above is suitable when the passenger car is elongated in the vehicle length direction and can be crowded with passengers as in the railway vehicle 1. ..

Next, the second embodiment will be described. FIG. 11 is a plan view showing the overall configuration of the vehicle air conditioning duct 12x according to the second embodiment. In the description after this embodiment, the same reference numerals may be given to the drawings for the same or similar members as those in the above-described embodiment, and the description may be omitted.

As shown in FIG. 11, the vehicle air-conditioning system 10x provided in the railroad vehicle 1x is composed of one air conditioner 11 and a vehicle air-conditioning duct 12x.

The air conditioner 11 is arranged in the central portion in the vehicle length direction and the central portion in the vehicle width direction in the railway vehicle 1x.

The vehicle air conditioning duct 12x is mainly composed of one main duct 21x, two chamber ducts 22x, and two front branch ducts (branch ducts) 23x.

The main duct 21x is formed in a rectangular shape in a plan view, and is arranged on one side in the vehicle length direction with respect to the air conditioner 11. The main duct 21x is not provided with the partition plate 25 shown in the first embodiment (FIG. 2).

The chamber duct 22x is arranged so as to be in contact with the main duct 21x at both ends of the main duct 21x in the vehicle width direction.

The front branch duct 23x is arranged on one side in the vehicle length direction with respect to the chamber duct 22x. Further, the front branch ducts 23x are arranged on both sides in the vehicle width direction with respect to the air conditioner 11. A guide plate 26 is provided in the main duct 21x in order to guide the conditioned air to the front branch duct 23x.

In the vehicle air conditioning duct 12x configured as described above, the harmonious air generated by the air conditioner 11 is sent to the main duct 21x and then into either the chamber duct 22x or the front branch duct 23x. It reaches and is supplied into the cabin through a blowout passage (not shown) located at the bottom of the duct.

Although details are not shown, a blowout passage having substantially the same configuration as the blowout passage 40b shown in FIG. 6 is connected to the front branch duct 23x. Further, the blowout passage is provided with a wind direction plate having the same configuration as that of FIG. Therefore, the vehicle air-conditioning duct 12x can uniformly exert the air-conditioning effect in the passenger compartment with a simple configuration as in the vehicle air-conditioning duct 12 of the first embodiment.

Next, the third embodiment will be described. FIG. 12 is a plan view showing the overall configuration of the vehicle air conditioning duct 12y according to the third embodiment.

As shown in FIG. 12, the vehicle air-conditioning system 10y provided in the railcar 1y is composed of one air conditioner 11 and a vehicle air-conditioning duct 12y.

The air conditioner 11 is arranged at one side end in the vehicle length direction and at the center in the vehicle width direction in the railway vehicle 1y.

The vehicle air conditioning duct 12y is mainly composed of one main duct 21y, two chamber ducts 22y, and two front branch ducts (branch ducts) 23y.

The main duct 21y is formed in a rectangular shape in a plan view, and is arranged on one side in the vehicle length direction with respect to the air conditioner 11.

The chamber ducts 22y are arranged at both ends of the main duct 21y in the vehicle width direction so as to be in contact with the main duct 21y.

The front branch duct 23y is arranged on one side in the vehicle length direction with respect to the chamber duct 22y. Further, the front branch ducts 23y are arranged on both sides in the vehicle width direction with respect to the air conditioner 11. A guide plate 26 is provided in the main duct 21y in order to guide the conditioned air to the front branch duct 23y.

In the vehicle air conditioning duct 12y configured as described above, the harmonious air generated by the air conditioner 11 is sent to the main duct 21y and then into either the chamber duct 22y or the front branch duct 23y. It reaches and is supplied into the cabin 4 from a blowout passage (not shown) arranged at the bottom of the duct.

Although details are not shown, a blowout passage having substantially the same configuration as the blowout passage 40b shown in FIG. 6 is connected to the front branch duct 23y. Further, the blowout passage is provided with a wind direction plate having the same configuration as that of FIG. Therefore, even in the vehicle air-conditioning duct 12y of the present embodiment, the air-conditioning effect in the cabin 4 can be uniformly exhibited with a simple configuration as in the vehicle air-conditioning duct 12 of the first embodiment.

Next, the fourth embodiment will be described. FIG. 13 is a plan view showing the overall configuration of the vehicle air conditioning duct 12z according to the fourth embodiment.

As shown in FIG. 13, the vehicle air conditioner system 10z provided in the railcar 1z is composed of two air conditioners 11 (first air conditioner 11a and second air conditioner 11b) and a vehicle air conditioner duct 12z. ing.

The two air conditioners 11 are arranged at both ends in the vehicle length direction and at the center in the vehicle width direction in the railway vehicle 1y.

The vehicle air conditioning duct 12z includes one main duct 21z, two chamber ducts 22 (first chamber duct 22a and second chamber duct 22b), and four front branch ducts 23 (two first front branch ducts). It is mainly composed of 23a and two second front branch ducts 23b).

The main duct 21 is formed in a rectangular shape in a plan view, and is arranged so as to be sandwiched between the first air conditioner 11a and the second air conditioner 11b at the central portion of the railway vehicle 1z in the vehicle length direction. Inside the main duct 21z, a partition plate 25z is provided so as to connect the diagonal positions of the main duct 21z formed in a rectangular shape to each other. Due to the partition plate 25z, the main duct 21z is composed of the main duct first chamber 21za to which the conditioned air is sent from the first air conditioner 11a and the main duct second chamber 21zb to which the conditioned air is sent from the second air conditioner 11b. It is divided into two spaces.

The chamber ducts 22 are arranged at both ends of the main duct 21 in the vehicle width direction so as to be in contact with the main duct 21. The first chamber duct 22a is adjacent to the first chamber 21za of the main duct formed in the main duct 21z, and the second chamber duct 22b is adjacent to the second chamber 21zb of the main duct formed in the main duct 21z.

The front branch duct 23 is arranged on both sides in the vehicle length direction with respect to the chamber duct 22. Further, the front branch ducts 23 are arranged on both sides in the vehicle width direction with respect to the air conditioner 11. Specifically, the first front branch duct 23a is arranged on the side closer to the first air conditioner 11a than the chamber duct 22 (both sides in the vehicle width direction of the first air conditioner 11a), and is compared with the chamber duct 22. The second front branch duct 23b is arranged on the side closer to the second air conditioner 11b (both sides of the second air conditioner 11b in the vehicle width direction).

In the vehicle air conditioning duct 12z configured as described above, the harmonious air generated by the air conditioner 11 is sent to the main duct 21z and then into either the chamber duct 22 or the front branch duct 23. It reaches and is supplied into the cabin through a blowout passage (not shown) located below the duct.

Although details are not shown, a blowout passage having substantially the same configuration as the blowout passage 40b shown in FIG. 6 is connected to the front branch duct 23. Further, the blowout passage is provided with a wind direction plate having the same configuration as that of FIG. Therefore, even in the vehicle air-conditioning duct 12z, the air-conditioning effect in the passenger compartment can be uniformly exhibited with a simple configuration as in the vehicle air-conditioning duct 12 of the first embodiment.

Next, a modified example of the above embodiment will be described. FIG. 14 is a front view showing a modified example in which the shape of the blowout passage 40 is different.

In FIG. 14, the chamber ducts 22, 22x, 22y, the front branch ducts 23, 23x, 23y, and the blowout passage 40v arranged below the rear branch duct 24 and connected to the passenger compartment 4 are viewed in the vehicle length direction. Sometimes it is formed in a curved shape (specifically, an arc shape) instead of a straight line. Even with this configuration, the conditioned air can be well diffused in the guest room 4.

Although preferred embodiments and modifications of the present invention have been described above, the above configuration can be changed as follows, for example.

The guide plate 26 can be formed in a polygonal line shape, for example, instead of being formed in a smoothly curved shape as shown in FIG. 6, for example. Further, the guide plate 26 may be configured to project inside the front branch duct 23.

The wind direction plate 42 can be formed in the shape of a curved plate or a bent plate, for example, instead of having a flat plate shape as shown in FIG. 6 and the like.

The wind direction plate 42 may be configured to project upward (inside the front branch duct 23) from the blowout passage 40b. Further, the wind direction plate 42 may be configured to project downward from the blowout opening 41 of the blowout passage 40b.

The number of wind direction plates 42 can be any number of one or more per one blow-out passage 40b.

The wind direction plates 42 may be arranged at unequal intervals instead of being arranged side by side at substantially equal intervals as shown in FIGS. 6, 8 and 9.

The installation example of the wind direction plate 42 shown in FIGS. 8 to 10 can be applied not only in the first embodiment but also in the second to fourth embodiments.

In the above embodiment, the widths of the chamber ducts 22, 22x, 22y, the widths of the front branch ducts 23, 23x, 23y, and the widths of the rear branch duct 24 are equal in a plan view. However, the width may be different. Further, although the ducts are arranged at the same position in the vehicle width direction, they may be arranged so as to be offset in the vehicle width direction.

In the above embodiment, two outlet passages 40 are formed for each duct (chamber duct 22, 22x, 22y, front branch duct 23, 23x, 23y, or rear branch duct 24). However, the present invention is not limited to this, and may be 1 or 3 or more. Further, the number of outlet passages 40 can be made different for each duct.

1 Railroad vehicle (vehicle)
4 Guest rooms 5 Ceiling 11 Air conditioner (air conditioner)
12 Vehicle air conditioning ducts (railway vehicle air conditioning ducts)
21,21x, 21y, 21z Main duct 22,22x, 22y Chamber duct 23,23x, 23y Front branch duct (branch duct)
26 Guide plate (guide part)
40b Blow-out passage 41 Blow-out opening 42 Wind direction plate S angle

Claims (4)

An air-conditioning duct for railway vehicles that is installed on the ceiling of a railway vehicle so as to extend in the direction of the vehicle length and supplies harmonious air adjusted by an air conditioner into the passenger compartment.
The main duct to which the harmonized air is supplied from the air conditioner and
A chamber duct arranged adjacent to the vehicle width direction end of the main duct and to which the conditioned air is supplied from the main duct, and a chamber duct.
A branch duct arranged on the end side in the vehicle length direction with respect to the chamber duct and to which the conditioned air is supplied from the main duct, and
A guide unit provided in the main duct, which changes the direction in which a part of the harmonized air supplied from the air conditioner to the main duct flows and guides the part of the harmonized air to the branch duct.
The conditioned air, which is arranged over the entire length of the branch duct and flows in the branch duct in the opposite direction to the conditioned air before being guided by the guide portion, is introduced from the branch duct into the cabin located below the main duct. The air outlet to supply and
Disposed on at least the blow passage, so that the conditioned air flows inverted with respect to blowing direction from the air conditioning system by the guide portion flows obliquely downward downward is closer to the guide portion, the harmonization A wind direction plate that guides the direction of air flow,
Equipped with a,
An air conditioning duct for a railroad vehicle , wherein an end portion of the wind direction plate in the vehicle width direction is inclined so as to approach the guide portion side as the distance from the branch duct increases in the vehicle width direction in a plan view. The air conditioning duct for a railway vehicle according to claim 1.
A plurality of the wind direction plates are arranged side by side in the longitudinal direction of the branch duct.
When the side in which the conditioned air is supplied from the main duct in the longitudinal direction of the branch duct is the upstream side in the longitudinal direction of the duct, and the side opposite to the side where the conditioned air is supplied is the downstream side in the longitudinal direction of the duct.
A railway vehicle characterized in that the angle formed by the wind direction plate located on the upstream side in the longitudinal direction of the duct with respect to the horizontal plane is smaller than the angle formed by the wind direction plate located on the downstream side in the longitudinal direction of the duct with respect to the horizontal plane. Air conditioning duct for. The air conditioning duct for a railway vehicle according to claim 2.
An air-conditioning duct for a railroad vehicle, characterized in that the angle formed by the wind direction plate with respect to a horizontal plane increases as the duct approaches from the upstream side in the longitudinal direction of the duct to the downstream side in the longitudinal direction of the duct. The air-conditioning duct for railroad vehicles according to any one of claims 1 to 3.
The air conditioner that supplies the harmonious air to the railroad vehicle air conditioner duct, and the air conditioner.
A railroad vehicle characterized by being equipped with.

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