Blower

Abstract

To obtain an air blower which can send cleaned air in a case where the air blower is installed in a vehicle in which an installation space of an air cleaner cannot be separately secured.SOLUTION: An air blower 100 includes: a motor; an impeller 2 attached to an output shaft of the motor; and a fan casing 1 formed with an air inlet 1a which is open in a direction perpendicular to the output shaft and an air outlet 1b which is open in a direction different from the direction in which the air inlet 1a is directed and perpendicular to the output shaft, the fan casing 1 installed so as to enclose the impeller 2 from an outer periphery direction; an air cleaner 9 installed at the air inlet 1a; and a shield plate 10 which protrudes from the air cleaner 9 to an outer peripheral surface of the impeller 2 so as to enclose the air cleaner 9.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a blower equipped with a crossflow fan. [Background technology]

[0002] To improve the environment inside trains and buses that accommodate many people, fans equipped with cross-flow fans as disclosed in Patent Document 1 are installed. The fans blow air onto passengers to give them a feeling of coolness and to homogenize the temperature distribution in the interior space, thereby improving the environment inside the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3777726 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been growing interest in health problems caused by dust, such as fine particulate matter with a diameter of 2.5 μm or less, called PM2.5 (Particulate Matter 2.5), and there is a demand for improving the environment in the vehicle interior by reducing dust. However, the blower disclosed in Patent Document 1 can blow air toward the vehicle interior, but cannot remove dust from the vehicle interior. Therefore, when blowing purified air into the vehicle interior using the blower disclosed in Patent Document 1, it is necessary to provide a separate air purifier. However, even if an air purifier is provided separately from the blower, it is difficult to secure the space and structure for providing the air purifier in the vehicle interior in existing vehicles.

[0005] As described above, when the blower disclosed in Patent Document 1 is installed in a vehicle in which a separate installation space for an air purification device cannot be secured, it is difficult for the blower to blow purified air.

[0006] The present disclosure has been made in consideration of the above, and aims to obtain a blower that can blow purified air even when installed in a vehicle where separate space for installing an air purification device cannot be secured. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, the blower according to the present disclosure includes a motor, an impeller attached to an output shaft of the motor, and a fan casing that is provided with an intake port that opens in a direction perpendicular to the output shaft, and an exhaust port that opens in a direction different from the direction in which the intake port faces and perpendicular to the output shaft, and that is disposed so as to surround the impeller from the outer periphery. They are installed at opposing positions and some of the air sucked in from the suction port passes through them. An air purifier; The air purifier is provided with an outer shell, the outer shell being formed on an edge of a surface facing the air inlet, Protruding from the air purifier toward the outer periphery of the impeller so as to surround the air purifier This reduces the flow of air that is sucked into the impeller without passing through the air purifier. and a shielding plate. Effect of the Invention

[0008] According to the present disclosure, it is possible to provide an air blower that can blow purified air even when the air blower is installed in a vehicle in which separate installation space for an air purification device cannot be secured. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a blower according to a first embodiment; [Diagram 2] FIG. 1 is a perspective view of a blower according to a first embodiment, cut along a plane perpendicular to an output shaft of a motor; [Diagram 3] FIG. 1 is a perspective view of a motor and a swing motor of a blower according to a first embodiment; [Figure 4] FIG. 1 is a perspective view of an air purifying device provided in a blower according to a first embodiment; [Diagram 5] FIG. 1 is a diagram showing an internal configuration of a high-voltage unit included in an air purifying device for a blower according to a first embodiment; [Figure 6]Circuit diagram of a high-voltage unit included in an air purifying device for a blower according to embodiment 1. [Figure 7] FIG. 11 is a cross-sectional view showing a cross section perpendicular to an output shaft of a motor of a blower according to a modification of the first embodiment. [Figure 8] FIG. 11 is a cross-sectional view showing a cross section perpendicular to an output shaft of a motor of a blower according to a modification of the first embodiment. [Figure 9] FIG. 11 is a cross-sectional view showing a cross section perpendicular to an output shaft of a motor of a blower according to a modification of the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a blower according to an embodiment will be described in detail with reference to the drawings.

[0011] Embodiment 1 FIG. 1 is a perspective view of a blower according to the first embodiment. FIG. 2 is a perspective view cut along a plane perpendicular to the output shaft of the motor of the blower according to the first embodiment. In FIG. 1, the illustration of the air purifier 9 and the housing 20 is omitted. The blower 100 includes a motor 3, an impeller 2, a fan casing 1, a housing 20, the air purifier 9, and an oscillating motor 4. The motor 3 rotates a driven object by the output shaft 3a. The oscillating motor 4 changes the blowing direction of the airflow by oscillating the fan casing 1. The motor 3 and the oscillating motor 4 are covered with a cover 30.

[0012] The impeller 2 is a drive object rotated by the motor 3 via the output shaft 3a. The impeller 2 has multiple blades arranged on a circumference centered on the output shaft 3a. The motor 3 is a double-shaft motor, and two impellers 2 are installed on the output shaft 3a, one on each side of the motor 3.

[0013] The fan casing 1 surrounds the impeller 2. The fan casing 1 is formed with an intake port 1a that opens in a direction perpendicular to the output shaft 3a. The fan casing 1 is formed with an outlet port 1b that opens in a direction different from the direction in which the intake port 1a faces and perpendicular to the output shaft 3a. The opening area of ​​the intake port 1a is larger than the opening area of ​​the outlet port 1b. The fan casing 1 has guide plates 5 and 6 that are provided between the intake port 1a and the outlet port 1b. The fan casing 1 is swung by the swing motor 4, and the opening direction of the outlet port 1b changes, thereby changing the blowing direction of the airflow.

[0014] 3 is a perspective view of the motor and oscillating motor of the blower according to embodiment 1. A mounting plate 15 is installed facing the side of the motor 3. The output shaft 3a passes through a hole 15a formed in the mounting plate 15 and is fixed to the impeller 2. The oscillating motor 4 is installed between the mounting plate 15 and the motor 3. The output shaft 4a of the oscillating motor 4 is fixed to the fan casing 1 through a notch 15b formed in the mounting plate 15.

[0015] The motor 3, impeller 2, and fan casing 1 constitute a crossflow fan that draws in air from an inlet 1a by the rotation of the impeller 2 and blows out the air from an outlet 1b. The motor 3, impeller 2, and fan casing 1 are housed in a rectangular parallelepiped housing 20. An air inlet / outlet 20a is formed on one side of the housing 20. The air inlet / outlet 20a is an opening formed in the housing 20, and air enters and exits the inside of the housing 20 through the air inlet / outlet 20a.

[0016] That is, the air sucked in through the suction port 1a of the fan casing 1 by the rotation of the impeller 2 described above flows into the housing 20 as an intake flow 7 through the air inlet / outlet 20a. The air blown out from the fan casing 1 by the rotation of the impeller 2 becomes an outlet flow 8 through the air inlet / outlet 20a and is blown out from the housing 20.

[0017] The air purifier 9 is provided inside the housing 20. The air purifier 9 is installed facing the suction port 1a of the fan casing 1. A part of the air sucked in from the suction port 1a passes through the air purifier 9, and purified air is blown out from the air outlet 1b. The air purifier 9 includes a high-voltage unit 11.

[0018] FIG. 4 is a perspective view of an air purifier provided in the blower according to the first embodiment. FIG. 5 is a view showing the internal configuration of a high voltage unit provided in the air purifier of the blower according to the first embodiment. In FIG. 5, the internal configuration of the high voltage unit 11 is shown with the outer casing 14 removed. The high voltage unit 11 has a discharge electrode 12, a counter electrode 13, and an outer casing 14. The outer casing 14 is formed of a resin material. The discharge electrode 12 is a wire-shaped electrical conductor having the strength to maintain its own shape. The material of the discharge electrode 12 can be tungsten, but is not limited to this. The discharge electrode 12 and the counter electrode 13 are made of a material that does not rust easily with water so that they can be washed with water when dust adheres to them.

[0019] A shielding plate 10 is formed on the outer casing 14 of the high voltage unit 11, protruding from the air purifier 9 toward the opening edge of the suction port 1a of the fan casing 1. The shielding plate 10 is provided on the edge of the surface of the outer casing 14 facing the suction port 1a so as to surround the air purifier 9. Therefore, it is possible to suppress the shortcut flow between the air purifier 9 and the impeller 2 in all directions. The shortcut flow is the flow of air that is sucked into the impeller 2 without passing through the air purifier 9. The shielding plate 10 suppresses the shortcut flow in the gap between the air purifier 9 and the impeller 2 in the up, down, left and right directions. Therefore, the air purification effect of the blower 100 is improved by providing the shielding plate 10. In FIG. 2, the shortcut flow suppressed by the shielding plate 10 is represented by a black arrow.

[0020] In addition, when the fan casing 1 is swung by the swiveling motor 4, there is a position in which the flow of air drawn into the impeller 2 without passing through the air purifier 9 increases, but this flow can be suppressed by the shielding plate 10.

[0021] FIG. 6 is a circuit diagram of a high-voltage unit included in the air purifier of the blower according to the first embodiment. The white arrows in FIG. 6 indicate the flow of air. The high-voltage unit 11 has a structure in which the counter electrodes 13 are arranged so as to sandwich the discharge electrode 12 from both sides. In the high-voltage unit 11, a high voltage is applied between the discharge electrode 12 on the voltage side and the counter electrode 13 on the ground side, and a corona discharge and an electric field space are generated. As a result, dust particles suspended in the air are charged by the corona discharge, and the charged dust particles are collected by Coulomb force. The air purifier 9 is not limited to the electric type as described above, and may be a device that purifies the air by other methods such as a filter.

[0022] Furthermore, by providing the air purifier 9 at a position opposite the intake port 1a of the fan casing 1, that is, by installing the air purifier 9 upstream of the impeller 2 in the air flow when the impeller 2 rotates, it is possible to purify the air in the space in which the blower 100 is installed while suppressing a decrease in the blowing performance of the blower 100 by providing the air purifier 9.

[0023] As described above, the opening area of ​​the outlet 1b is smaller than the opening area of ​​the inlet 1a. Therefore, the wind speed of the air blown out from the outlet 1b is faster than the wind speed of the air sucked in through the inlet 1a. Therefore, when the air purifier 9 is provided at a position facing the outlet 1b, that is, downstream of the impeller 2, the influence of pressure loss when passing through the air purifier 9 becomes large, and the blowing performance is likely to decrease. In addition, when the air purifier 9 is an electric type, the dust collection effect is higher and the air purification effect is higher when the speed of the air passing through the air purifier 9 is low. Therefore, from the viewpoint of air purification, it is preferable to provide the air purifier 9 upstream of the impeller 2.

[0024] Furthermore, by providing the air purifier 9 inside the housing 20 of the blower 100, there is no need to provide an installation space for the air purifier 9 separate from the installation space for the blower 100. Therefore, even in a railway vehicle in which it is difficult to provide an installation space for the air purifier 9 separate from the installation space for the blower 100, the air in the interior space can be purified.

[0025] In addition, by replacing a blower already installed in a railway vehicle with blower 100 that has mounting compatibility in terms of external dimensions and power source, etc. and has air purification device 9 built in, the air in the interior space of the vehicle can be easily purified even in existing railway vehicles.

[0026] 7, 8, and 9 are cross-sectional views showing a cross section perpendicular to the output shaft of the motor of the blower according to the modified embodiment of the first embodiment. FIG. 7 shows a state in which the fan casing 1 is located at the dead center on the air purifier 9 side of the reciprocating motion in the swing. FIG. 8 shows a state in which the fan casing 1 is located at the center of the reciprocating motion in the swing. FIG. 9 shows a state in which the fan casing 1 is located at the dead center on the opposite side of the air purifier 9 in the reciprocating motion in the swing. In FIGS. 7, 8, and 9, the side of the air purifier 9 is shown. In the air purifier 9 of the blower 100 according to the modified embodiment of the first embodiment, a shielding plate 10 that protrudes toward the opening edge of the intake port 1a of the fan casing 1 is formed on the outer casing 14. The shielding plate 10 is an edge of the surface of the outer casing 14 facing the intake port 1a, and is provided so as to surround the air purifier 9. The shape of the shielding plate 10 is designed so as not to interfere with the fan casing 1 even when it swings. The portion of the shielding plate 10 facing the impeller 2 is shaped to fit the outer periphery of the impeller 2. As shown in Figures 7, 8 and 9, the shielding plate 10 is shaped not to interfere with the fan casing 1 at any position in the reciprocating motion of the swinging fan casing 1. Therefore, in the blower 100 according to the modification of the first embodiment, the portion of the shielding plate 10 facing the impeller 2 is shaped to fit the outer periphery of the impeller 2, so that it is possible to increase the amount of air passing through the air purifying device 9 and capture more dust.

[0027] In the above description, an example has been given in which the blower 100 is installed in a railway vehicle, but the installation of the blower 100 is not limited to railway vehicles. In other words, the blower 100 can be applied not only to railway vehicles, but also to vehicles such as buses.

[0028] As described above, the air purifier 9 is not limited to an electric type, but when the purpose is to purify a large space such as a railway vehicle, it is preferable to use an electric air purifier 9. An ion generator, which is a type of air purifier, purifies the air by colliding emitted ions with dust particles in the air. If the ions are dense, the collision probability increases and the air purification effect also increases, but if the ions are diffused in a large space such as the interior space of a railway vehicle, the collision probability between the ions and the dust particles decreases, and the air purification effect decreases. On the other hand, the blower 100 equipped with the electric air purifier 9 uses the airflow sucked into the housing 20 to collect dust particles and purify the air, so that the air purification effect is not likely to decrease even in a large space such as the interior space of a railway vehicle.

[0029] The configurations shown in the above embodiments are merely examples of the contents, and may be combined with other known technologies. Parts of the configurations may be omitted or modified without departing from the spirit of the invention.

[0030] Various aspects of the present disclosure are summarized below as appendices.

[0031] (Appendix 1) A motor; an impeller attached to an output shaft of the motor; a fan casing having an intake port that opens in a direction perpendicular to the output shaft and an exhaust port that opens in a direction different from the direction of the intake port and perpendicular to the output shaft, the fan casing being disposed so as to surround the impeller from an outer circumferential direction; An air purifying device installed at the air inlet; a shielding plate protruding from the air purifying device toward an outer circumferential surface of the impeller so as to surround the air purifying device. (Appendix 2) A swing motor that swings the fan casing to change an opening direction of the air outlet; a mounting plate disposed opposite a surface of the motor on which the output shaft is disposed, The blower according to claim 1, wherein the oscillating motor is installed between the mounting plate and the motor. (Appendix 3) A blower as described in Appendix 1 or 2, characterized in that the portion of the shielding plate facing the impeller does not interfere with the trajectory of the oscillation of the fan casing and has a shape that fits along the outer peripheral surface of the impeller. (Appendix 4) The blower according to any one of claims 1 to 3, wherein the air purifying device is an electric air purifying device having a discharge electrode and a counter electrode and applying a voltage between the discharge electrode and the counter electrode. [Explanation of symbols]

[0032] 1 fan casing, 1a suction port, 1b blowing port, 2 impeller, 3 motor, 3a, 4a output shaft, 4 oscillating motor, 5, 6 guide plate, 7 suction flow, 8 blowing flow, 9 air purifier, 10 shielding plate, 11 high voltage unit, 12 discharge electrode, 13 counter electrode, 14 outer shell, 15 mounting plate, 15a hole, 15b cutout, 20 housing, 20a air inlet / outlet, 30 cover, 100 blower.

Claims

1. A motor; an impeller attached to an output shaft of the motor; a fan casing having an intake port that opens in a direction perpendicular to the output shaft and an exhaust port that opens in a direction different from the direction of the intake port and perpendicular to the output shaft, the fan casing being disposed so as to surround the impeller from an outer circumferential direction; an air purifying device provided at a position facing the suction port and through which a portion of the air sucked in from the suction port passes; a shielding plate formed on the edge of a surface of an outer shell of the air purifier facing the suction port, protruding from the air purifier toward the outer circumferential surface of the impeller so as to surround the air purifier, and suppressing the flow of air sucked into the impeller without passing through the air purifier.

2. A swing motor that swings the fan casing to change an opening direction of the air outlet; a mounting plate disposed opposite a surface of the motor on which the output shaft is disposed, 2. The blower according to claim 1, wherein the oscillating motor is disposed between the mounting plate and the motor.

3. 2. The blower according to claim 1, wherein a portion of the shielding plate facing the impeller is shaped so as not to interfere with the trajectory of the oscillation of the fan casing and to conform to an outer circumferential surface of the impeller.

4. 4. The blower according to claim 1, wherein the air purifying device is an electric air purifying device having a discharge electrode and a counter electrode, and a voltage is applied between the discharge electrode and the counter electrode.

Images