JPH09100800A - Ventilator for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilator small, low in noise and of high efficiency by installing single stage turbo fans on both shafts of a high speed motor and building the both fans, the motor and a silencer in an outside cylinder casing. SOLUTION: A ventilator of a high speed vehicle is installed with turbo fans 3, 4 for air charge and exhaust on both shafts of a drive motor 2 surrounded by a motor casing 1 and provided with an outside cylinder casing with a sound absorbing material adhered on its inner peripheral side so as to surround them. When the motor 2 is driven and the air charge and exhaust turbo fans 3, 4 are driven, outside air 10 from an outside air suction port 6 flows in the inside of the air charge fan 3, ventilates the inside of a cooling fin 11 provided on an outer periphery of the motor casting 1 and it is discharged from an outside air discharge port 7 through an outside air discharge pipe 12. Additionally, exhaust air 13 flows in from an exhaust air suction port 8, flows in the inside of the exhaust fan 4, ventilates the inside of the cooling fin 11 and is discharged from an exhaust air discharge pot 9 through an exhaust air discharge pipe 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device used for continuously ventilating the interior of a high speed vehicle having an airtight structure, and more particularly to a structure of the ventilation device for reducing noise and downsizing the ventilation device. Regarding

[0002]

2. Description of the Related Art Conventionally, a ventilation fan of a continuous ventilation device for high-speed vehicles is a multi-blade fan (a fan with a front impeller) as described in Japanese Patent Publication No. 3-66520. The structure of the ventilator is to install an air supply fan and an exhaust fan on both shafts of the drive motor, and a muffler to reduce fan noise is installed separately from the ventilator.
Further, the drive motor is cooled by the air discharged from the exhaust fan.

[0003]

Since the conventional ventilation device uses a multi-blade fan (a fan with a forward impeller), the fan efficiency is low, and there is no static pressure at the impeller outlet of the multi-blade fan. Therefore, the air discharged from the impeller cannot be directly guided to the outer circumference of the motor due to the air cooling of the drive motor, and the air discharged from the impeller is once collected in the scroll to obtain static pressure and then to the outer circumference of the motor. It was cooled, and the volume of the ventilation system was also large.

Further, since the muffler is installed separately, there is a drawback that the entire volume related to the ventilation device becomes large. Even if the multi-blade fan is rotated at high speed, the motor cooling duct is required and the silencer cannot be built in the ventilation system.
The drawback of increasing the overall volume of the ventilator remained the same.

Therefore, an object of the present invention is to provide a compact, low noise,
It is to provide a highly efficient ventilation device.

[0006]

In order to solve the above problems, the present invention comprises the following means.

A turbo type fan is used as a fan for a ventilation device, a high speed motor is used as a drive motor, and an air supply fan and an exhaust fan are attached to both shafts of the drive motor. The silencer is built into the casing to make it smaller. ◆ The air discharged from the impeller of the air supply fan is guided directly to the outer circumference of the motor, and the air discharged from the impeller of the exhaust fan is also guided to the outer circumference of the motor, so that the air is not mixed with the air supply to the motor. Ventilation is made parallel to the axis, eliminating the need for conventional motor cooling ducts. ◆ The fins around the motor accelerate the cooling of the motor, and at the same time, the fins function as a partition plate so that the supply air and the exhaust air do not mix and can ventilate adjacently. ◆ Install sound absorbing materials around the ducts between the air supply and exhaust passages and the outer casing, between the air supply fan and air inlet, and around the duct between the exhaust fan and air outlet. ,
The noise of the air supply fan and the exhaust fan is prevented from propagating to the outside of the ventilation system to reduce noise.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the details of the embodiments of the present invention, an outline thereof will be described.

In ventilation of a high-speed vehicle or the like having an airtight structure, continuous ventilation is performed by using a suction pipe between the outside air and an air supply fan inside the vehicle and a discharge pipe between an exhaust fan inside the vehicle and the outside air. Are doing

In the embodiment of the present invention, a turbo-type fan (fan with a rear impeller) is used as a fan for a ventilation device to improve efficiency as a fan, and at the same time, a drive motor is speeded up by an inverter or the like. , Install air supply fan and exhaust fan on both shafts of drive motor, drive motor,
Both fans and silencer are built into the outer casing.
As a result, we have achieved a significantly smaller size and lower noise than before. Further, the static pressure at the impeller outlet of the turbo fan is high, and the discharge air of the impeller can be directly guided to the outer circumference of the motor. Exhaust gas is not mixed and ventilates parallel to the motor shaft. As a result, the conventional motor cooling duct is not required, and the volume of the air supply path and the exhaust path is greatly reduced.At the same time, the air supply path and the exhaust path are built in the outer casing, so Fan noise from the road can be significantly reduced, and noise can be significantly reduced.

Further, fins are provided on the outer periphery of the motor to accelerate the cooling of the motor by ventilation, and at the same time, the fins function as a partition plate so that the supply air and the exhaust air can be adjacently ventilated without being mixed.

In the ventilator of the present invention, either external air (supply air) or vehicle interior air (exhaust air) can be used as cooling air for the motor. When one air is cold and the other is hot, cool air is ventilated between the fins on the outer circumference of the motor to cool the motor with high efficiency, while the other hot air is cooled by the low temperature air and the fins on the outer circumference of the motor. The outer periphery is ventilated to insulate the air on the low temperature side and the motor fins from heat, and the fan noise from the ventilation path can be further reduced by this heat insulating material.

Further, in the present invention, the motor can be cooled while heat exchange between the outside air (supply air) and the exhaust air. In this case, the fin has a function as a partition plate for the outside air and the exhaust gas and a function for cooling the motor, and the structure is simple, so that the ventilation device can be further downsized.

Further, in the present invention, the low temperature air can be guided to the outer periphery of the motor by a fan other than the air supply fan and the exhaust fan which are directly connected to the drive motor to cool the motor.

As described above, according to the embodiments of the present invention, it is possible to provide a highly efficient and small-sized ventilation device which is quiet.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing an embodiment of the present invention. In FIG. 1, the ventilation device includes a drive motor 2 surrounded by a motor casing 1 and a turbo for supplying air to both shafts of the drive motor 2. Install the fan 3 and the exhaust turbo fan 4,
It is composed of an outer cylinder casing 5 having a sound absorbing material 15 adhered to the inner peripheral side surrounding them, and the outer cylinder casing 5 has a suction port 6 and a discharge port 7 for the outside air, a suction port 8 and a discharge port for the exhaust gas. 9
Is provided.

When the motor 2 is driven, the air supply fan 3 and the exhaust fan 4 are driven so that the outside air 10 flows in through the outside air inlet 6 and flows through the inside of the air supply fan 3 to cool the outer periphery of the motor casing 1. Ventilation inside the fins 11 and the outside air discharge pipe 1
The air is discharged from the outside air discharge port 7 via 2. The exhaust 13
The gas flows in through the exhaust suction port 8, flows through the exhaust fan 4, passes through the cooling fins 11 and is discharged from the exhaust discharge port 9 through the exhaust discharge pipe 14.

In the present invention, in order to achieve small size, high performance, and high efficiency, the fan type is a turbofan type, and the noise is reduced by increasing the efficiency. Further, by lining the sound absorbing material 15 on the inner peripheral side of the outer cylinder casing 5, the sound deadening effect is increased and the noise is reduced. Further, since the fan, the motor, and the silencer are built in the outer casing 5, the size can be reduced.

2 and 3 show a state in which the ventilation device of the present invention is installed in a high-speed vehicle, and the ventilation device 5 is attached to the lower part of the vehicle body 32 together with the air conditioner 33. In a high-speed train composed of a plurality of vehicles, one of the vehicles and one of the air conditioning apparatuses are attached to the lower portion of the vehicle body 32 in each of the vehicles.

FIG. 3 is a schematic diagram showing the flow of air accompanying air conditioning and ventilation between the vehicle interior 36 and the ventilation device 5 and the air conditioning device 33. The exhaust gas 13 is sucked from the inside 36 of the vehicle by the exhaust fan 4 and is discharged to the outside of the vehicle via the exhaust fan 4 like 13e. Further, fresh outside air is sucked from outside the vehicle by the intake fan 3 like 10 and flows through the intake fan 3 into the upstream portion 33a of the air conditioner like 10e. On the other hand, the air conditioner 33
Sucks the circulating air 37 in the vehicle interior 36 and guides it to the upstream portion 33a of the air conditioner like 37a. In the air conditioner, the circulating air 37a and the outside air 10e are mixed in the upstream portion 33a, and the temperature and humidity of the mixed air are appropriately air-conditioned in the downstream portion 33b after passing through the evaporator 38.
Flow to 6. In this way, even in a high-speed vehicle having an airtight structure, the exhaust device 13 allows the exhaust 13 to flow out in the vehicle interior 36 by the ventilation device 5,
Fresh air can be replenished like 37d in the air-conditioned state.

4 and 5 show an embodiment of the present invention. FIG. 4 is a sectional view taken along the line AA 'in FIG. 1, and FIG.
It is a B'cross section. In FIG. 4, the outside air 10 flowing in from the outside air suction port 6 is ventilated from the air supply fan 3 through the cooling fins 11 provided on the outer periphery of the motor while cooling the drive motor 2, and is gradually expanded toward the outside air discharge port 7. The air is discharged from the outside air discharge pipe 12 of some form to the outside air discharge port 7. FIG.
As shown in FIG. 4, when the air supply blower 3 and the exhaust fan 4 are driven, the supply air 10 and the exhaust air 13 flowing into the cooling fins 11 are divided into fins so that they can be adjacently ventilated so as not to mix in the fins. The air-cooled fin shape allows heat exchange between the supply air and the exhaust air at the same time.

As a result, the drive motor 2 is cooled by the supply air and the exhaust air, and the supply air and the exhaust air can exchange heat at the same time. 4 and 5 particularly show the case where the exhaust gas is at a temperature lower than the supply air, and in this case, the drive motor 2 is efficiently cooled by the exhaust gas, and at the same time, the supply air also becomes a low temperature, and the air conditioner downstream of the supply air fan is air-conditioned. The load is also reduced and the performance of the air conditioner is improved (air conditioning capacity is increased by about 15%).

FIG. 6 shows another embodiment of the present invention. In the present invention, as shown in FIG. 6, a drive motor 2a surrounded by a motor casing 1a, two-stage type external air turbofans 3a and 3b on both shafts of the drive motor 2a, and a two-stage type exhaust turbofan. It is composed of an outer cylinder casing 5a that surrounds 4a and 4b. The outer cylinder casing 5a is provided with a suction port 6a and a discharge port 7a for the outside air, and a suction suction port 8a and a discharge port 9a for the exhaust gas. A sound absorbing material 15a is attached to the inner peripheral side of the outer cylinder casing 5a. Since the impeller portion is further downsized by attaching the two-stage turbofan, the overall volume of the ventilation device is downsized, and the noise absorbing member 15a reduces noise.

FIG. 7 shows another embodiment of the present invention, and FIG. 8 is a sectional view taken along line CC 'in FIG. In the present invention, as shown in FIG. 7 and FIG. 8, when the exhaust gas is at a high temperature and the motor cannot be cooled, it can be cooled by the outside air from the air supply fan. When the drive motor 2b is driven, the air supply fan 3c and the exhaust fan 4c rotate, the outside air 20 flows in from the outside air intake port 6b, flows through the inside air supply fan 3c, and flows into the outside air flow passage 22 provided on the outer periphery of the motor. Then, the drive motor 2b is cooled and discharged from the outside air outlet 7b. Exhaust gas 21 flows in through the exhaust suction port 8b, flows through the exhaust fan 4c, passes through the exhaust flow path 23 provided on the outer peripheral side of the outside air flow path 22, and is discharged through the exhaust discharge port 9b. A heat insulating sheet 24 is provided between the air supply passage 22 and the exhaust passage 23 so that the outside air and the exhaust air do not mix with each other.

As a result, even if the temperature of the exhaust gas becomes high and the motor cannot be cooled, the drive motor can be cooled by the air supply.

FIG. 9 shows another embodiment of the present invention. 10 is a sectional view taken along the line DD ′ in FIG. 9, and FIG. 11 is a sectional view taken along the line EE ′ in FIG. In the present invention, FIG.
As shown in FIGS. 10 and 11, when the temperature of the exhaust gas is high and the supply air is also high due to the compression action of the air supply fan, the outside air is directed to the outer circumference of the motor by another fan different from the fan of the ventilation device according to the present invention. It has a structure that conducts a current to cool the drive motor. When the drive motor 2c is driven, the air supply fan 3
d, the exhaust fan 4d rotates, the outside air 25 flows in from the outside air suction port 6c, passes through the inside of the air supply fan 3d, passes through the air supply passage 22a, and is discharged from the outside air discharge port 7c. The exhaust air 26 flows in through the exhaust air intake port 8c, and the exhaust fan 4d
Through the air supply passage 23a, and the exhaust air outlet 9c
Discharge from. Motor cooling air 28 for cooling the motor
Flows from the motor cooling air suction port 27, passes through the motor cooling flow path 29 provided on the outer periphery of the motor while cooling the drive motor 2c, and discharges from the motor cooling air discharge port 30. The air supply passage 22a, the exhaust passage 23a, and the motor cooling passage 29 have a structure partitioned by a sound absorbing material so that the air supply 25, the exhaust air 26, and the motor cooling air 28 do not mix with each other.

Thus, even if the exhaust air and the supply air are of high temperature, and the air cannot be cooled by the air, the motor cooling air can be guided by another fan different from the fan of the ventilation device to cool the motor. .

The detailed contents of the present invention have been described above. However, the present invention improves fan efficiency by 10%, reduces noise by about 10 dB, and reduces the volume of the device by 30% as compared with the conventional ventilation device.
Reduce size. Furthermore, the ventilation structure of the present invention allows the motor to be cooled with high efficiency depending on the temperature of the supply air / exhaust air.

According to the embodiment of the present invention, a high-speed motor and a single-stage turbofan are used for both shafts of the motor, and a fan, a motor, and a silencer are built in the outer cylinder casing, so that the size and efficiency are improved. The noise reduction is achieved by the muffler. By providing partition-shaped air-cooling fins on the outer periphery of the motor, which allow ventilation without admixing the outside air with the exhaust air, cooling of the motor and heat exchange between the supply air and the exhaust air can be performed. Further miniaturization can be achieved by mounting a two-stage turbo fan on both shafts of the high speed motor. In addition, the temperature of the exhaust gas is high due to the motor air-cooling structure that cools the motor with the outside air of the air supply fan or the motor air-cooling structure that cools the motor by guiding the outside air with another fan different from the fan of the ventilation device. However, the motor can be cooled.

According to the above inventions, the fan efficiency is improved by 10%, the noise is reduced by about 10 dB, and the volume of the device is reduced by 30% as compared with the conventional ventilation device.

[0032]

According to the present invention, a single-stage turbofan is attached to both shafts of a high-speed motor, and both fans, a motor, and a silencer are incorporated in an outer cylinder casing. A vehicle ventilation device can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of installation of the ventilation device of the present invention in a high-speed vehicle.

FIG. 3 is an explanatory diagram of an air flow according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line AA ′ in FIG.

5 is a sectional view taken along line BB ′ in FIG.

FIG. 6 is a diagram showing another embodiment of the present invention.

FIG. 7 is a diagram showing another embodiment of the present invention.

8 is a cross-sectional view taken along the line CC ′ in FIG. 7.

FIG. 9 is a diagram showing another embodiment of the present invention.

10 is a cross-sectional view taken along the line DD ′ in FIG.

11 is a cross-sectional view taken along the line EE ′ in FIG.

[Explanation of symbols]

1 ... Motor casing, 1a ... Motor casing, 1b
... motor casing, 1c ... motor casing, 2 ... drive motor, 2a ... drive motor, 2b ... drive motor, 2c
... drive motor, 3 ... air supply fan, 3a ... air supply fan, 3
b ... Air supply fan, 3c ... Air supply fan, 3d ... Air supply fan, 4 ... Exhaust fan, 4a ... Exhaust fan, 4b ... Exhaust fan, 4c ... Exhaust fan, 4d ... Exhaust fan, 5 ... Outer casing, 5a ... outer cylinder casing, 5b ... outer cylinder casing, 5c ... outer cylinder casing, 6 ... outside air suction port, 6a ...
Outside air inlet, 6b ... Outside air inlet, 6c ... Outside air inlet, 7
... air supply outlet, 7a ... air supply outlet, 7b ... air supply outlet,
Reference numeral 7c ... Supply air outlet, 8 ... Exhaust air inlet, 8a ... Exhaust air inlet, 8b ... Exhaust air inlet, 8c ... Exhaust air inlet, 9 ... Exhaust outlet, 9a ... Exhaust outlet, 9b ... Exhaust outlet, 9c ... Exhaust discharge port, 10 ... Air supply, 10a ... Air supply, 10b ... Air supply,
10c ... Air supply, 10d ... Air supply, 11 ... Cooling fin, 11
a ... Cooling fin, 11b ... Cooling fin, 11c ... Cooling fin, 12 ... Supply air discharge pipe, 12a ... Supply air discharge pipe, 12b
... air supply / discharge pipe, 12c ... air supply / discharge pipe, 13 ... exhaust gas, 13
a ... exhaust, 13b ... exhaust, 13c ... exhaust, 13d ... exhaust, 14 ... exhaust discharge pipe, 14a ... exhaust discharge pipe, 14b ...
Exhaust discharge pipe, 14c ... Exhaust discharge pipe, 15 ... Sound absorbing material, 15
a ... sound absorbing material, 15b ... sound absorbing material, 15c ... sound absorbing material, 16 ...
Rotation direction, 16a ... Rotation direction, 17 ... Air supply, 17a ... Air supply, 17b ... Air supply, 17c ... Air supply, 17d ... Air supply, 17
e ... Air supply, 17f ... Air supply, 18 ... Exhaust, 18a ... Exhaust,
18b ... Exhaust, 18c ... Exhaust, 18d ... Exhaust, 18e ...
Exhaust, 18f ... Exhaust, 19 ... Return guide vane, 2
0 ... Air supply, 20a ... Air supply, 20b ... Air supply, 20c ... Air supply, 20d ... Air supply, 20e ... Air supply, 21 ... Exhaust, 21a
Exhaust, 21b ... Exhaust, 21c ... Exhaust, 21d ... Exhaust,
21e ... Exhaust air, 22 ... Air supply passage, 22a ... Air supply passage, 2
3 ... Exhaust channel, 23a ... Exhaust channel, 24 ... Insulation sheet,
25 ... Air supply, 25a ... Air supply, 25b ... Air supply, 25c ... Air supply, 25d ... Air supply, 25e ... Air supply, 26 ... Exhaust air, 26a
Exhaust, 26b ... Exhaust, 26c ... Exhaust, 26d ... Exhaust,
26e ... Exhaust air, 27 ... Motor cooling air inlet, 28 ... Motor cooling air, 28a ... Motor cooling air, 28b ... Motor cooling air, 28c ... Motor cooling air, 28d ... Motor cooling air, 2
9 ... Motor cooling flow path, 30 ... Motor cooling air discharge port, 31
... Motor cooling air discharge pipe, 32 ... Car body, 33 ... Air conditioner,
34 ... Wheels, 35 ... Rails, 36 ... Car interior, 37 ... Circulating air, 38 ... Evaporator, 39 ... Vehicle body floor plate.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yasushi Takatsu 603, Kandamachi, Tsuchiura-shi, Ibaraki Pref.

Claims (5)

[Claims] 1. A vehicle ventilating apparatus for continuously ventilating a high-speed vehicle or the like having an airtight structure by incorporating a fan in a casing having a suction flow path and a discharge flow path, wherein a single-stage turbo is provided on both shafts of a high-speed motor. A ventilation device for a vehicle, comprising a fan, a fan, a motor, and a silencer built into an outer casing of the device. 2. The vehicle ventilator according to claim 1, wherein the supply air and the exhaust air are alternately partitioned by the fins on the outer periphery of the motor to ventilate the air so that the supply air and the exhaust air can exchange heat. Ventilation system for vehicles. 3. The vehicle ventilator according to claim 1, wherein the ventilation passages on the outer periphery of the motor have two stages in the radial direction, and low-temperature air is introduced to the inner peripheral side and high-temperature air is introduced to the outer peripheral side. Ventilation system for vehicles characterized by its structure. 4. The vehicle ventilator according to claim 1, wherein the vehicle ventilator has a motor air-cooling structure for cooling the motor by guiding the outside air by another fan different from the fan of the ventilator. 5. The vehicle ventilator according to claim 1, wherein a two-stage turbo fan is attached to both shafts of a high speed motor.