JP2001082396A - Blower, blasting system, and blasting method for the blasting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To blast air to a distance by leading air from a diffuser air flow passage near the outer periphery of a fan casing to a clearance between an air passage member on a thin sheet and the other side wall provided on a surface opposed to the side wall and blasting the air from a blasting port so as to assure the direction and velocity of the blasting air. SOLUTION: A clearance allowing air to flow axially from a centrifugal diffuser air passage 9 between a semi-circular fan casing and a first air passage member 3 to a centrifugal diffuser air passage rear space 10 is formed as follows. Namely, the clearance between the casing and the first air passage member 3 is constant on the upper half side, and a clearance between the main body side wall and the first air passage member 3 is increased toward the lower half side. Thus, the blast air from a propeller fan is concentrated downward, concentrated in a specified direction without diffusing the flow of air after being left from the fan, and blasted with the air volume and air velocity maintained. Thus, a large air volume can be blasted to a distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower which is installed at an open entrance of a building and which can be mainly used for a technology such as an air curtain for insulating the inside and outside of a building during cooling and heating.・ Very fast blowing wind speed using propeller fan with improved noise characteristics.
The present invention relates to the technology of a blower having a large air volume.

[0002]

2. Description of the Related Art A conventional blower of this type is called an air curtain, and is a cross flow blade called a line flow fan, which is a circular and axially long blade and is provided at a position perpendicular to the suction port. It blows air to the outlet.

FIG. 15 is a side sectional view of a blower using a conventional crossflow blade disclosed in Japanese Patent Application Laid-Open No. 6-313603, viewed from the direction of the rotation axis. The blower main body 101 installed on the indoor side of the upper wall surface 105 of the entrance above the open entrance 106 of the house has its installation surface side 101
It has a suction port 103 on the side opposite to a and an outlet 104 on the bottom. Further, inside the blower main body 101, a cross flow van 113 for sending wind from the suction port 103 to the outlet 104 and a drive motor 114 for rotating the cross flow van 113 are provided.
13 has a fan casing 11 for guiding the flow of wind.
5 are provided. Further, a plurality of wind direction adjusting plates 116 for adjusting the direction of the blown wind are rotatably supported by the outlet 104 with the upper end as a fulcrum. When the cross flow vanes 113 are rotated by the rotation of the drive motor 114 as described above, the air sucked from the suction port 103 passes through the cross flow vanes 113 and the fan casing 11
5 blows the air to the outlet 104, and forms an air curtain flow from above the opened entrance 106 to below. In the attached state of this drawing, there is a suction space A110 between the ceiling surface 107 and the blower main body upper surface 101b opposite to the blowout port 104 of the blower main body 101, but the blower main body upper surface 101b is attached to the ceiling surface 107. Even if the suction space A110 is lost due to close contact, the suction port 103
Can be mounted without affecting the air blowing action.

[0004] In the cross flow vane, the suction port 103 and the blow out port 104 of the fan casing are symmetrical with respect to the rotation axis, and both the suction flow and the blow flow flow through the cross flow vane 113, that is, approximately 180 ° rotation. At this point, the suction flow becomes a blow-off flow, and after all, about 1
/ 2, the fan efficiency is lower than that of a propeller fan or the like, and the outer dimensions of the main body 101 are not so small because of the presence of the fan casing despite the small outer diameter of the cross flow vanes. The outlet 104 of the fan casing has a small width and a long shape in the axial direction due to the blowing of the cross flow vanes, so that the blowing flow has a high wind speed but a small air volume. Due to such a flow of wind, if there is a person directly under the outlet, it feels uncomfortable,
Furthermore, in order to secure the air volume, the blowing wind speed is further increased, and the wind speed is high also on the floor surface, which causes an unpleasant state such as blowing up dust on the floor or hitting the bounced wind against another person.

As a blower for solving the above problem, there is a blower described in Japanese Patent Application Laid-Open No. Hei 6-313603. This blower uses a plurality of propeller fans, and a plurality of blowers are provided in parallel. Since the above-mentioned blower uses a propeller fan, it is characterized by low noise and high fan efficiency, but the wind flow direction, that is, the suction direction and the blowout direction are axial directions, and the right angle direction of the conventional cross flow blade type is not.

FIG. 16 is a side sectional view showing a product configuration of a conventional propeller fan type blower. Reference numeral 35 denotes an outer case of the blower 101, and 103 denotes a suction port provided at an upper portion of the outer case.
A cylindrical bell mouth 30 having a rounded upper end 34 is formed of a resin molded product at the suction port. Numeral 36 denotes a motor mounting foot, which fixes the drive motor 1 in which the propeller fan 2 is fixed to the rotating shaft by a blade fixing nut 42 so as to be located between the bell mouths 30. It should be noted that a plurality of blowers including the drive motor 1, the propeller fan 2, and the bell mouth 30 are provided in parallel on the outer casing 35 at equal intervals. Reference numeral 104 denotes an outlet provided at the lower portion of the outer casing 35. The outlet 104 has a structure which communicates with the inlet 103 and has a lower end rounded in the same manner as the inlet 103 so as to be bent inward. Is joined to the outlet end of the bell mouth 30 to form a smooth air path 31 on the entire inner wall of the outer casing 35.

Reference numeral 33 denotes a guide provided at the center of the outlet 104 of the outer casing 35, the apex of which is on the side of the inlet 103, and the outlet 104.
The cross section of the guide is formed in a substantially triangular shape, and each part of the guide is rounded to form a multi-layer parallel nozzle 32 in the outlet 104.

In the conventional propeller fan type blower, the flow direction of the wind is from above to below in the axial direction, and it is necessary to secure a suction space A110 between the suction port 103 and the ceiling surface 107 of the building. 101 cannot be attached closely to the ceiling surface 107. The blower main body 101 is mounted on the indoor side of the upper wall surface 105 at the entrance with a main body mounting bracket 102. When the blower is installed on the ceiling, wall, or floor, it does not come into close contact with each surface.

FIG. 17 is a side view of a conventional propeller fan type blower in a mounted state, particularly when there is outside wind. The left diagram (a) shows a case where the blower body 101 is set so that the blowing direction of the wind is substantially right below, that is, a case where the rotation axis of the propeller fan is vertical. The right drawing (b) shows a case where the blower main body 101 is tilted obliquely and the blowing direction of the wind is tilted to the outside of the building, that is, to the outside wind side. In the installation state shown in the left diagram (a), the blown air is blown into the indoor side (the left side in the drawing) by the outside wind, and the outside wind enters the room. In contrast,
In the mounting state shown in the right figure (b), the blowout wind is directed to the outside of the room (right side in the figure) in advance, so that the ratio of entering the room by the outside wind is reduced. However, in such an attached state, it is necessary to tilt the direction of the blower main body 101 by the main body mounting bracket 102.
If there is an outside wind, 1 must be mounted again at an angle, and the mounted state becomes unnatural in appearance.

FIG. 18 is a side view of a conventional propeller fan type blower in a mounted state, particularly in a case where the outside wind is strong. Although the blower main body 101 is installed at an angle, the blowout wind does not become as shown in FIG. The outside wind is blown into the room (middle left) and enters the room.

[0011]

In the case of a blower using cross flow vanes as shown in FIG. 15, there is a problem that the air flow cannot be secured and the sealing effect is not sufficient. In addition, the blade has a low fan efficiency of about 30%, and has a problem in that it has a particularly unpleasant noise such as a rotating sound whose frequency is determined by the number of rotations. In addition, the blades have a large number of small blades (usually about 12 blades) called multi-blade fans. Since dust easily adheres to the blades, the length of the blades in the axial direction may be long. There was a problem that the vibration was lost and increased. Furthermore, the attachment and detachment of the blades are complicated and cleaning is difficult. In addition, when a propeller fan is used, FIG.
As shown in 6-18, it is necessary to secure a space between the suction port 103 and the building, and the product cannot be attached to the ceiling surface and cannot be mounted. There was a problem.

Further, the swirling component of the blowout flow, which is a characteristic of the propeller fan, cannot be completely removed.
The outlet is a nozzle type, and the outlet area is smaller than the suction area, and a pressure loss occurs, and the static pressure of the blower has not been efficiently changed to the outlet dynamic pressure. As described above, there is a problem that it is difficult to secure the wind speed, and it is not possible to secure performance such as heat insulation as an air curtain. Japanese Patent Publication No. 6-35880 is known as a technique for securing the air volume and the wind speed with a propeller fan, but the structure becomes complicated, such as using a scroll casing or tilting the entire apparatus to ensure the performance. In addition, there is a problem that the dimensions are increased, and it is necessary to restrict the mounting location and to suppress the performance. In addition, there is a problem that the blowing air is widened and cannot be used for an air seal. Furthermore, since a plurality of propeller fans are used, there is a problem that a large number of motors having the highest manufacturing cost must be used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a highly reliable apparatus which can ensure the direction and speed of a blown wind and can blow air to a distant place. Another object of the present invention is to provide a device which can obtain a large air volume and a high wind speed in one direction with a simple structure. Another object of the present invention is to provide a system and a method which are easy to use and can form an airflow such as a high-performance air curtain.

[0014]

According to a first aspect of the present invention, there is provided a blower which is driven by a driving means to rotate and blow air, and is provided around the propeller fan to guide the blow air in an axial direction and to rotate the propeller fan. Wind path forming means for guiding air blowing from the vicinity of the end in the outer circumferential direction, and an air outlet for blowing air in the outer circumferential direction with the air path forming means as one side wall, and a surface facing the air outlet as a propeller fan. Between a fan casing connected to a semicircular side wall so as to keep a distance between the fan casing and the side wall provided in the fan casing so as to face the propeller fan at a predetermined interval in an axial direction of the propeller fan. A thin air path member larger than the outer diameter of the blades of the propeller fan that forms a diffuser air path that guides air blowing in the outer peripheral direction. Is intended to blown from the air outlet directs the air blowing from the outer periphery of the fan casing from the diffuser air path between the other side wall which is provided in the side wall which faces.

In the blower of the second aspect, a plurality of wind direction plates are provided in the width direction of the fan casing in the width direction of the fan casing to partition in the width direction, and air is blown in one direction from the air outlet.

In the blower according to the third aspect, a plurality of wind direction plates are provided in the axial direction of the fan casing at the outlet of the fan to partition in the axial direction, and the wind direction plates are rotatable in the axial direction. .

According to a fourth aspect of the present invention, there is provided a blower fan which is driven to rotate by a driving means and blows air, and which is provided around the propeller fan and guides air to the propeller fan, from the vicinity of the outlet end of the propeller fan. Means for forming an air passage in a fan casing for guiding air blowing in an outer peripheral direction, an outlet for the fan casing for blowing air in an outer peripheral direction in one direction substantially orthogonal to a rotation axis of a propeller fan, and a surface facing the air outlet. An outer peripheral portion of the fan casing connected to a semicircular side wall so as to cover the outer periphery of the propeller fan, and a propeller fan that is housed in the outer peripheral portion of the fan casing and faces the propeller fan at a predetermined interval in the axial direction of the propeller fan. A thin air path member forming a diffuser air path that guides air blow in an outer circumferential direction between the thin air path member and the side wall; A back ventilation path for guiding air from the diffuser air path in the outer peripheral direction and blowing the air from the air outlet between the air path member and the other side wall provided on the surface facing the side wall; and a plurality of air directions at the air outlet. A plate is provided and the outlet is partitioned to blow air in one direction.

According to a fifth aspect of the present invention, there is provided a blower fan which is driven to rotate by a driving means and blows air, and which is provided around the propeller fan to guide the airflow in the axial direction, and from the vicinity of the end of the propeller fan to the outer circumferential direction. A wind path forming means for guiding air to the air blower, and an air outlet for blowing the air in an outer peripheral direction in one direction orthogonal to the rotation axis of the propeller fan, with the air path forming means as one side wall, excluding this air outlet A fan casing connected to a side wall having an outer peripheral surface formed in a semicircular shape, and provided in the fan casing so as to face the propeller fan at a predetermined interval in an axial direction of the propeller fan and between the side wall and the outer peripheral direction. And a thin plate-shaped air path member that forms a diffuser air path that guides air blowing,
The dimension from the outlet end of the outlet to the outer diameter of the blade of the propeller fan is substantially the same as the dimension between the semicircular outer peripheral surface of the fan casing and the outer diameter of the blade of the propeller fan.

According to a sixth aspect of the present invention, at least a part of the air path forming means or the fan casing is integrally formed of styrene foam or the like.

In the blower according to the present invention, the suction R portion of the integrally formed air path forming means is formed in a mortar shape to cover the outer peripheral portion of the propeller fan.

In the blower according to the present invention, the size of the fan casing in the width direction is 1.4 to 1.5 times the outer diameter of the blades of the propeller fan, and the fan casing is centered on the rotation axis of the fan. Approximately semicircular.

According to a ninth aspect of the present invention, the size of the fan casing having the outlet at one end in the height direction is substantially the same as the size of the fan casing in the width direction.

According to a tenth aspect of the present invention, the blower is provided with a second outlet air passage and an opening / closing damper for opening and closing the second outlet air passage on a wall surface adjacent to the air outlet of the fan casing or on a wall surface forming the air outlet.

The blower according to the eleventh aspect is provided with a heat absorbing / heating element at an outlet of the centrifugal diffuser air passage.

According to a twelfth aspect of the present invention, the blower includes a heat absorbing / heating element near the outlet, a second outlet air passage on a wall adjacent to the outlet of the fan casing, and a partial opening of the outlet. It's the one you've blocked.

According to a thirteenth aspect of the present invention, in the blower system, a blower is connected in a direction in which a back surface facing a suction port of a propeller fan is aligned and air outlets are arranged.

According to a fourteenth aspect of the present invention, there is provided a blower system in which a plurality of blowers are provided in parallel so that a suction port and a blowout port of a propeller fan are adjacent to each other, and an air curtain flow is formed by a plurality of blowers. is there.

According to a fifteenth aspect of the present invention, in the blower system, a plurality of propeller fans are connected in parallel so that an inlet and an outlet of the propeller fan are adjacent to each other, and two sets of the plurality of connected propellers are provided. It is provided so that the back sides opposite to the fan inlet are aligned and the outlets are arranged side by side.

According to a sixteenth aspect of the present invention, the propeller fan, which is rotationally driven by the blower driving means, transmits the axial ventilation from the suction port to the outer periphery of the propeller fan from the vicinity of the end portion by the diffuser air path. And blowing the air from the propeller fan through an air outlet provided at one end of a fan casing of the blower accommodating the diffuser air path, such that the suction port and the air outlet of the propeller fan are adjacent to each other. Forming a blowing flow by blowing from a set of a plurality of blowers in which a plurality of blowers are connected in parallel, and disposing another set of a plurality of blowers at a distance from the set of a plurality of blowers. Forming another set of airflows in the other direction to be blown, and blowing the air blown by one set into the other set. It is intended to form the blowing stream is continuous in a plurality of surfaces having different angles by the arrangement and the provision of the angle ventilating direction of inlet and outlet as.

According to a seventeenth aspect of the present invention, the blower is provided with a rotatable wind direction plate at the outlet, so that the direction of the air blown in one direction can be changed by changing the angle of the wind direction plate.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a side view of a product configuration of the blower of the present invention, and FIG. 2 is a front view of the blower with a decorative grille removed. Reference numeral 2 denotes a propeller fan which is driven to rotate by a drive motor 1 to perform a blowing action. Reference numeral 5 denotes a bellmouth casing for guiding air to the propeller fan 2, and is connected to an outlet end of the bellmouth casing. The partitioning second air path members 4 and 16 are connected to the outlet 104 in a direction orthogonal to the rotation axis of the propeller fan 2.
The fan casing 3 having a substantially semicircular cross section perpendicular to the rotation axis is provided in the fan casing 16 so as to face the propeller fan 2 at a predetermined interval, and is larger than the outer diameter of the propeller fan. A disc-shaped first air path member serving as a ventilation guide as a dimension, 15 is a blower main body, 103 is a fan inlet which is open on one side and is an opening surface, 15a is a main body rear face on the opposite side, 11 Is a motor mounting plate for fixing the driving motor 1 and the first air path member 3 substantially at the center of the rear surface 15a of the main body, and 22 is a fan fixed to which the propeller fan 2 is detachably mounted on the rotating shaft 1a of the driving motor 1. The nut 9 is formed between the second air path member 4 and the disk-shaped first air path member 3 which is larger than the outer diameter of the propeller fan 2 and is mounted substantially in parallel. Heather air passage, 10 is a centrifugal diffuser air path back space.

A larger fan casing 16 is attached to the outer peripheral portion of the first air path member 3 in a semicircular shape centered on the rotation shaft 1a. Is provided. The entire fan casing is a bell mouth casing 5 which is a ventilation guide of the propeller fan 2, a second air path member 4 forming a side wall and a main body rear face 15a, a fan casing 16, an outlet 104.
Are formed integrally with the main body 15, and further constitute the main body 15 including the decorative grille 14. A makeup grille 14 is detachably attached to a suction port 103 of the fan, and a plurality of left and right wind direction plates (rectifying plates) 17 are arranged at a blowout port 104 of the fan in the width direction of the scroll casing so as to partition the blowout air path in the width direction. Mounted on

The makeup grill 1 is driven by the propeller fan 2.
4. The air sucked through the fan suction port 103 receives an axial and radial force due to the rotation of the propeller fan, and the bell mouth casing 5, the second air passage member 4, and the first air passage member 3. The velocity energy of the flow can be converted into a static pressure and flowed from the axial direction to the radial direction without wasting. In other words, the centrifugal diffuser air path 9 that converts the axial flow into the radial flow in the outer blowing space from the bell mouth casing to the first air path member has a large air volume and low noise of the propeller fan. The pressure (static pressure) can be increased by changing the flow by 90 ° while taking advantage of the high-efficiency feature, as compared with the axial flow, which is the flow of a conventional propeller fan. That is, the characteristics are improved by converting the speed energy, which has been wasted by the conventional propeller fan, into the static pressure by the centrifugal diffuser air path.

The air whose flow direction has been changed in the radial direction from the centrifugal diffuser air path 9 is guided by the left and right side surfaces of the blower main body 15 on the lower side in FIG. In other words, since the air is blown downward at a high wind speed due to the large air volume of the propeller fan and the pressure converted in the centrifugal diffuser air passage, the air can be blown far. In addition, the air blown upward collides with the fan casing 16 and is directed to the centrifugal diffuser rear space 10 side formed between the rear surface 15a of the main body and the first air path member 3, that is, the outer peripheral portion of the first air path member 3. The direction of the flow is changed by about 180 °, and the air is blown from the outlet 104 through the space 10 behind the centrifugal diffuser air passage. As shown in FIG. 2, the air blown to the side also collides with the semicircular fan casing or the side wall of the main body 15, and the space behind the centrifugal diffuser air path formed between the main body rear face 15 a and the first air path member 3. The direction of the flow is changed to the side 10, that is, at the outer peripheral portion of the first air path member 3, and the air is collected at the air outlet 104 which is open to the entire lower part of the main body 15, and blows out in a certain direction with a large air volume and a high wind speed. That is,
The air sucked from the front face of the decorative grill 14 changes the flow direction by 90 °, and the scroll casing 16 collects and blows the radial flow toward the four sides of the box-shaped main body to one side of the box-shaped main body side.

In a scroll type casing which has a conventional winding start and expands the vortex over the outlet to smoothly flow the wind, it is possible to secure the air volume and reduce the noise, but from the expanded outlet. The diffused wind blown out has a greatly different wind speed depending on the position of the outlet, and it is difficult to blow it to a distant place. As in the present invention, the gap that is blown in the axial direction from the centrifugal diffuser air passage 9 between the semicircular fan casing and the first air passage member 3 to the centrifugal diffuser air passage rear space 10 as in the present invention is, The gap between the first air path members 3 is the same in the upper half, and further, the gap between the main body side wall and the first air path member 3 becomes wider toward the lower half, so that the air flow of the propeller fan concentrates downward. In other words, the structure in which the flow of the wind is concentrated in a certain direction without being diffused after leaving the fan can be blown out while maintaining the airflow and the wind speed, so that a large airflow can be sent to a distant place. Furthermore, since a casing back space 27 is formed between the fan casing 16 and the main body 15, this space can be used to store capacitors and wiring components as electric components. In addition, the propeller fan is a centrifugal fan, the blade shape is simpler and lighter than other blades such as a cross-flow fan, and a complicated fan casing is not required.Since the structure is simple, the blade load is small and high speed rotation is possible. Therefore, it is possible to obtain an air volume with a small size. For example, as compared with a line flow fan having a large air volume, a propeller fan can take twice the rotation speed with respect to the same air volume, so that the size can be further reduced.

In FIG. 2, four left and right wind direction plates 17 are mounted so as to partition the blow-out air path in the width direction, that is, in the left and right direction in the figure. In order to make the wind blown from the outlet 104 reach far, it is necessary to rectify the wind blown from the outlet 104, make the blow direction the same direction, and make the blow wind speed uniform. In other words, unless the wind blown out from the outlet 104 is uniform, they do not reach far away because they interfere with each other. In this prototype, when the propeller fan is driven to rotate at 2200 r / m with a blade outer diameter of φ210, main body outer shape □ 300, outlet size of 300 × 75 mm, the wind speed is improved by about 30% by providing the wind direction plate 17. Was effective. A propeller fan is mounted substantially at the center of the outer shape of the main body, and a fan casing 16 is provided so as to be in contact with the main body.
In FIG. 2, the diameter is larger than the outer diameter of the fan so as to form a diffuser in the shape of a circular thin plate, and smaller than the diameter of the fan casing in order to provide a gap for securing an axial ventilation path. The lower half of 3 may have a rectangular thin plate shape. However, compared to the dimensions of the main body, that is, the outer diameter of the semicircle of the fan casing, the outer diameter of the propeller fan must be as large as possible to produce a wind speed.
When the outer diameter of the fan blades was set to φ180 in the example of the prototype, the wind speed could not be obtained. This is because the air path from the fan to the air outlet becomes longer and the pressure in the main unit drops, so the fan diameter is larger than the main unit so that air can be blown out while maintaining high pressure. It is desirable that the dimensions are such that a minimum diffuser air path and an axial path can be ensured.

Embodiment 2 FIGS. 3, 4, and 5 are side views of another product configuration of the blower of the present invention. 1 and 2 indicate the same components. In the integral fan casing 19, the bell mouth casing 5 and the second air path member 4 having the configuration shown in FIG. 1 are integrally formed of a heat insulating and lightweight material such as styrene foam. In the integral fan casing 20, the bell mouth casing 5, the second air path member 4, and the fan casing 16 having the structure shown in FIG. 1 are integrally formed of a heat-insulating lightweight material such as styrene foam. In addition to the wind direction plate 17, a total of two front and rear wind direction plates 18 are provided in the fan outlet 104 in addition to the wind direction plate 17, one on the centrifugal diffuser wind path 9 side and one on the centrifugal diffuser wind path rear space 10 side. The air passage 104 is partitioned in the axial direction. The front / rear wind direction plate 18 is rotatable in the axial direction. In FIG. 3, the direction is vertical, and the blowing wind is at right angles to the axial direction, that is, right below the drawing. FIG. 4 shows the mounting state in the case where the air is inclined toward the rear face 15a of the main body and the blowout wind is directed not toward the bottom but slightly toward the rear face 15a of the main body and there is outside wind. Since the integral fan casing is formed integrally with a heat-insulating lightweight material such as styrene foam, it is possible to integrate components and reduce the weight at the same time.
When the housing is made of a thin steel plate, if the integral fan casing is configured to be in close contact with the inner surface of the main body, the strength of the main body can be increased, so that the main body can be further thinned. Note that the rotation of the front and rear wind direction plates 18 corresponds to the wind direction plate fulcrum 18.
With the fulcrum as a fulcrum, the user can easily perform the operation manually.

The suction R portion of the integral fan casing 19 in FIG. 3 is formed in a mortar shape to cover the outer peripheral portion of the propeller fan, that is, the suction portion 19a, the blowout portion 19b, and the intermediate portion are all circular. In the shape of the bell mouth 5 shown in FIG. 1, the air sucked from the suction port 103 becomes circular at the bell mouth 5 because the opening surface of the main body 15 is square, and the suction flow is changed from square to circular. Therefore, the propeller fan 2 may be rotating at a high speed because the flow is biased, so that annoying noise such as a rotating sound whose frequency is determined by the number of rotations is particularly likely to occur as in the case of the cross flow fan. On the other hand, since the integral fan casing 19 has a suction R portion formed in a mortar shape to cover the outer peripheral portion of the propeller fan, the suction flow is less likely to be biased, so that the rotation noise is hardly generated.

In FIGS. 1 and 2, the width of the fan casing in the width direction is 1.
4 to 1.5 times, and the fan casing has a substantially semicircular shape centered on the rotation axis of the fan. In a blower using a conventional propeller fan, the width direction W of the scroll casing is about twice as large as the outer diameter of the propeller fan as shown in Japanese Patent Publication No. 6-35880. When the scroll casing has a spiral shape like a sirocco fan, when the blade rotates in the right direction as viewed from the suction side, the air outlet 10
The wind speed of the blowing wind in the width direction 4 is faster on the right side and slower on the left side. In addition, the size of the scroll is large in order to smoothly flow the flow with respect to the outer diameter of the blade. For example, in the case of a standard scroll magnification, the outer diameter of the scroll is □ 300 when the outer diameter of the blade is φ180, and the outer diameter of the scroll is the outer diameter of the blade. 1.66 times as large as When used as an air curtain, it is necessary to equalize the blowing air velocity of the flow in a certain direction as described above. For this reason, at the same rotation speed, the processing air volume is slightly reduced, but as a method of increasing the blowing air speed by rotating at high speed, in the present invention, the fan casing is concentric with the blade so as to be 1.4 to 1.5 times the outer diameter of the blade. It is configured to be. By doing so, the outer diameter of the blade can be about φ210, while the outer shape of the main body including the fan casing is □ 300. In addition, outlet 1
The wind speed in the width direction from 04 can be made uniform. Making the fan casing 1.4 to 1.5 times the outer diameter of the blade is the first
Since the air path member 3 is optimally 1.15 to 1.2 times the outer diameter of the blade, the air path from the centrifugal diffuser air path 9 to the centrifugal diffuser air path back space 10 at the outer peripheral portion is taken into consideration.
4 to 1.5 times.

FIG. 5 shows an exploded view of a blower having an integral fan casing when parts are disassembled. The grille 14 can be disassembled in order from the front where the grill 14 is attached to the main body 15 and, conversely, can be easily attached from the back part. FIG. 5 shows the parts configuration of the blower shown in FIGS. First, a box-shaped main body 1 having an opening on one side
The motor mounting plate 11 is fixed to substantially the center of the back surface 15a of the main body 5 by spot welding or screw fixing. Next, the drive motor 1 is fixed to the motor mounting plate 11 with the motor fixing screw 23. At this time, the first air path member 3 is also fastened to the motor mounting plate 11 together. The integral casing 20 is inserted through the fan suction port 103. In the case of this example, the integral casing 20 is formed by integrally molding three parts of a bell mouth casing 20a, a second air path member 20b, and a fan casing 20c with styrene foam or the like. In the above description, the case of the integral fan casing 20 has been described. However, in the case of the integral fan casing 19, the fan casing 16 formed of a thin steel plate or the like before the fan casing 19 is inserted.
Is fixed to the main body 15. Integrated fan casing 19
When inserting the first air path member 3
For example, the main body 15 is provided with a function such as a stopper so as to have a predetermined interval. Also fan inlet 103
Further, the propeller fan 2 is fixed to the rotating shaft 1a of the drive motor 1 with the blade fixing nut 22. Finally, the makeup grill is attached to the opening of the main body.

When performing maintenance such as removing dust attached to the propeller fan 2 of the blower, first, the decorative grille 14 attached to the suction opening 103 of the main body 15 is removed. Next, the blade fixing nut 22 is removed, and finally the propeller fan 2 is removed from the rotation shaft 1a of the drive motor 1. In this way, with the configuration of the present blower, the fan can be easily cleaned with the product attached. Also, the propeller fan is less likely to adhere dust than the cross-flow fan, which is a multi-blade fan, and the dust adheres evenly to the front of the blades. Since there is no unevenness, maintenance is easy. When installing this blower in a building, as in the case of maintenance, first, the decorative grille 14 is removed, and then the propeller fan 2 is removed. In this state, the state of the blower provided in the first air passage member 3 is affected. It is sufficient to insert a wall mounting member such as a wood screw from a mounting hole that does not provide the blower, and to fix the blower main body to the wall surface by using a main body fixing hole provided on the main body back surface 15a on a surface facing the mounting hole. Alternatively, a body fixing hole such as a wood screw for fixing a ceiling mounting member such as a wood screw may be provided in a portion of the main body side surface 15b where the bellmouth casing 5 is not located, and the ceiling grill 107 may be directly fixed to the ceiling surface 107 with the decorative grille 14 removed. You can also. In this manner, the main body can be directly and easily fixed to the wall surface or the ceiling surface, and a metal fitting for the main body is not required, so that an inexpensive and lightweight mounting is possible.

Embodiment 3 FIG. 6 is a side view showing a state in which a plurality of blowers are arranged and installed at distant positions in a room. In the drawing, the right side is a normal installation state diagram in which a plurality of blowers arranged in parallel continuously function as an air curtain, 101 is a blower main body, 103 is a suction port, 104 is an outlet, 105 is an upper wall surface of an entrance, 106 is Is an open entrance, 107 is a ceiling surface, 108 is a floor surface, and 109 is a wall surface without an opening. The flow direction of the wind is suctioned from the suction port 103 of the blower disposed below, and blows out from the suction port 104, that is, blows out at a right angle below the left side, and the blown blowout is the suction wind of the blower mounted on the ceiling surface. . The blowout from the ceiling blower is blown to the air curtain blower provided at the entrance 106 as indoor circulating air. Installation of the air curtain blower is the blower body 1
01 is opposite to the air outlet 104 of the blower main body 101 so that the side of the main body side a101a opposite to the inlet 103 of the main body faces the upper wall surface 105 of the entrance and the side facing the ceiling surface 107 of the building. The main body 101 can be attached in close contact with the ceiling surface 107. In the drawing, the upper left side is a normal mounting state diagram as an air transport (circulator), and shows a case where air in the ceiling of the room is blown from left to right. In this case, the suction port 103 is on the lower side and the wall surface 109 side of the building is the main body side surface b101b, and the ceiling surface 107 side of the building is the main body side surface a101a, so that the blower main body 101 is in close contact with both the wall surface 109 and the ceiling surface 107. Can be installed. Furthermore, the vertical dimension of the blower is determined by the axial dimension of the blades of the propeller fan, so that the blower can be configured to be thin, the protrusion from the ceiling can be suppressed, and the fan can be fitted to the ceiling. In the figure, the lower left side is a normal installation state diagram as a circulator,
Also in this case, the floor surface 108 side of the building is the main body side surface b101b,
Since the wall surface 109 side of the building is the main body side surface a101a, the blower main body 101 can be closely attached to both the floor surface 108 and the wall surface 109, and is placed on the floor surface. In this description, the configuration in which the wall surface of the room is circulated has been described. However, a specific room can be insulated by an air curtain if provided in a partition between the rooms. In addition, the configuration to attach to the ceiling surface was shown, but the large space with a high space was separated by ventilation that circulates through the upper space that does not require cooling and heating,
It is also possible to improve energy efficiency. Also, even if the entrance is not a flat shape but a complicated shape,
If the air curtain by this circulating air is used sideways, two or three entrance surfaces can be sealed with continuous circulating air, or complicated surfaces such as those where the entrance facing the outside is retracted inside the room On the other hand, sealing can be performed with a continuous flow of air.

FIG. 7 is a side view showing a state in which a blower for an air curtain is mounted, particularly in a state where there is outside wind. 3 (a) shows a case where the blower body 101 is set so that the blow direction of the wind is almost directly downward, as in FIG. 3, that is, a case where the wind direction plate provided at the outlet is vertical or not attached. The right figure (b) shows a case where the installation of the blower main body 101 is the same, but the wind direction plate is inclined to the outside of the building, that is, to the outside wind side. In the installation state shown in the left diagram (a), the blown wind is blown into the indoor side (the left side in the drawing) by the outside wind, and the outside wind enters the room. On the other hand, in the mounting state shown in the right figure (b), since the blown air is directed to the outside of the room (right side in the figure) in advance, the ratio of entering the room by the outside air is reduced. Such an installation state can be performed by an easy operation simply by tilting the wind direction plate 21 provided at the outlet, and the user can change the installation state when the outside air is present after installing the blower body, and the product installation state is unnatural. Does not. In this way, the blowing direction can be changed without changing the installation direction of the main body, so that countermeasures against outside wind can be easily performed. In the blowers of FIGS. 6 and 7, a plurality of blowers are connected in parallel so that the inlet and outlet of the propeller fan are adjacent to each other, and an air curtain is formed by the airflow from the plurality of blowers. Since air is blown out from the entire lower end portion of the blower main body 101 corresponding to the fan casing and the outlets are continuously arranged, the entire plane can be covered with the airflow. In addition, while the air volume and the air velocity are secured from the propeller fan through the centrifugal diffuser air passage, the air casing blows out at a constant air velocity by the fan casing having a small gap with the fan to form an air curtain with a reliable seal.

FIG. 8 is a side view of a mounted state in which a blower is combined, and particularly shows a state where the outside air is strong or an opening height of the entrance is high. Two blower bodies 10
The two main body side surfaces 101a are brought into close contact with each other, and the two air outlets 104 are installed adjacent to each other. The axial dimension of the blowing wind is about double, and the blowing force is about 2
Although the power is doubled and the force of the outside wind is strong, the blowing wind is less likely to enter the room due to the outside wind. Note that the blower arranged facing the room sucks air from inside the room, and the blower arranged facing the outside sucks air from outside the room. In accordance with the opening height of the entrance, the blower main body 101 is connected to the outlet 1
04 to the upper wall surface 10 of the entrance
5 so as to face the lower end face. In particular, in this configuration, a series of blowers are arranged on the ceiling, and the interior of the room is separated by air curtains to separate the areas that require heating and cooling, other areas, the smoking area, etc. Can be divided without a partition wall.

Embodiment 4 FIG. 9 is a front view of another blower of the present invention with a decorative grille removed, and FIG. 10 is a bottom view as viewed from the outlet 104 side. The same reference numerals as those in the above-described drawings indicate the same components. Reference numeral 21 denotes a heat absorbing / heating element provided in the outlet 104. Since the heat absorbing / heating element 21 is located in the place where the wind speed is the highest, not only the heat exchange efficiency is good, but also
For example, when the heat absorbing / heating element is a rod-shaped sheathed heater having a thin and long diameter, heat can be exchanged effectively with the blown air, and the influence on the blown-out air is small because of the elongated rod. If the sheathed heater is U-shaped so that it is located substantially at the center of the centrifugal diffuser air passage 9 in the axial direction and substantially at the center of the space behind the centrifugal diffuser air passage 10 in the axial direction, the entire length becomes long and the terminal portion at the end is increased. By energizing 21a, a large capacity can be achieved with one heater, and in terms of heat exchange, a large volume of heat can be exchanged because a large amount of air passes through the outer periphery of the sheathed heater. The wind direction plate 17 can prevent the influence of heat by notching the wind direction plate in the vicinity of the portion where the sheathed heater is present. As a result, an air curtain with a heating function having a large heater capacity can be formed, and can be effectively used as auxiliary heating in winter.

In FIG. 9, reference numeral 24 denotes a second blowable air passage which can be opened and is provided on the side surface of the box-shaped main body 15 adjacent to the air outlet 104 where the scroll casing 16 is not provided. Reference numeral 25 denotes an opening / closing damper provided at this portion for opening and closing. Reference numeral 26 denotes an outlet closing portion, which is an opening of the outlet on the projection surface provided with the heat absorbing / heating element 21 and closes a part of the outlet 104 adjacent to the second outlet air passage 24. As a result, a part of the air blown out from the second blow-out air passage 24 is heat-exchanged by the heat absorbing / heating element 21. In this way, this blower is used as a single unit in a place other than an air curtain, for example, in a washroom instead of a fan, that is, used as a cool air blower, and in winter as auxiliary heating,
The warm air blown out from the second blowing air passage 24 can be used for fogging of a mirror or the like.

Embodiment 5 FIG. FIG. 11 is a perspective view of a product configuration of another blower. The same reference numerals as those in the other drawings denote the same components.
Inlet 103 and outlet 10 of fan of blower body 15
Three blowers are connected in parallel so that 4 is adjacent. As in the case of the blower disclosed in JP-A-6-313603, the number of blowers to be connected is determined according to the size of the frontage of the open entrance 106 of the building. Here, the size of the blower 15 is 300 mm in width A, 300 mm in height B, and 180 mm in depth C with respect to the blade outer diameter φ210. In contrast, a conventional propeller fan type blower has a blade outer diameter of φ1
For 55, the width A is 180 mm and the height B is 220
mm and depth dimension C are 245 including the main body mounting bracket 102.
mm, and the size of the main body mounting bracket is 35 mm. The air volume ratio when the size of the blower is changed is the third power of the blade outer diameter ratio when the number of rotations is the same (180/155).
³ = 1.6 times, and the number of blowers is 1 / 1.6. Further, since the width dimension A of the blower is about 1.5 times, for example, a blower for a frontage of 900 mm requires three blowers, that is, three drive motors, whereas a conventional product requires three blowers. Five, that is, five drive motors are required. From this, the blower according to the present embodiment can reduce the number of drive motors used, which is the highest in the manufacturing cost, and can reduce the manufacturing cost.

Comparing the installation volumes, it is necessary to secure the suction space A110 in the conventional propeller fan type blower. Since the height of the suction space A110 is required to be 150 mm in FIGS. 16 to 18, when the width is the same, the embodiment has a height of 300 × depth 180 and the conventional product has a height of (220 + 150) × depth 245. Therefore, the installation volume of the blower of this embodiment is only 60% of the conventional product.
Will be good.

FIG. 12 is a perspective view of a product configuration in which the blower described in FIG. 8 is combined. The same reference numerals indicate the same items. FIGS. 8 and 12 show a pair of blowers connected in a direction in which the main body rear surface 15 opposite to the suction port 103 of the fan is aligned, and the outlet 104 is aligned in the vertical direction (rotation axis direction). In 12, three blowers are connected in parallel so that the suction port 103 and the blowout port 104 of the fan are adjacent to each other, the back faces opposite to the suction port of the fan are aligned, and the blowout ports are arranged vertically. In this direction, the blowers are connected to each other, that is, the blowers of FIG. 11 are connected such that the pair of main body back surfaces 101a are aligned. The axial dimension of the wind blown from the outlet 104 is doubled, and the air volume is also doubled. As described above, it is effective in improving the outside air blocking ability particularly when the outside wind is strong.

In the above description, a planar air seal for the entrance to the outdoors has been described. However, there are recent buildings with high airtightness, and factories and hospitals that require cleanliness inside. In such places, air partitions are often required not only between the outside but also specific places and corridors in the room. In such a case, a propeller fan that is rotationally driven by a motor that is a driving means of the blower in the blowing method as a blowing system causes the axial ventilation from the suction port to diffuse from the vicinity of the end of the propeller fan to the diffuser wind. By blowing the air in the outer circumferential direction by the road, the wind having a large air volume and high pressure can be blown with low noise. By blowing the blown air of the propeller fan in one direction substantially perpendicular to the axial direction from an air outlet provided at one end of the fan casing of the blower accommodating the diffuser air path, the blown air can be blown to a distant place. A strong air curtain flow is formed by blowing air from a set of a plurality of blowers in which a plurality of such blowers are connected in parallel with a suction port and a blow port of a propeller fan adjacent to each other,
That is, an air partition can be obtained. Further, another set of the plurality of blowers is arranged at a distance from such a set of the plurality of blowers, and the other set of the plurality of blowers is formed to form another blow flow in another direction. If this combination is provided in addition to two, more circulating air from one set of blowers to another set of blowers can be continuously formed as a plurality of surfaces,
Moreover, a system is obtained in which the directions of the suction and the blow are angled.

By using this system alone or by combining this system with a wall or the like, it is possible to pass through a room or a corridor, but it is possible to form a closed space for confining the air quality inside, and furthermore, a ventilation fan, cooling or air By combining with an air conditioner for cleaning or the like, it is possible to obtain a system with a flow of blast that can respond to various purposes such as trapping and exhausting dirty air and maintaining the air clean. A more complicated configuration is provided by providing a rotatable wind direction plate at the outlet to change the angle of the wind direction plate so that the direction of the air blown in one direction can be changed from a direction perpendicular to the axial direction. System is also possible.

As described above, in the present invention, the diameter of the blade is made as large as possible compared to the outer shape of the box of the blower. This is because when the number of rotations is the same, the air volume increases with the cube of the outer diameter ratio of the blades.Therefore, a diffuser air passage and a semicircular fan casing are provided so that the air is concentrated and blown out. Enables distant airflow without dropping. Further, a boss configuration of a fan that accommodates a motor in the blades of a propeller fan can provide a thin blower. In addition to this, the axial direction of the blower is greatly reduced due to the diffuser back space with the same thickness as the thin diffuser air path. Further, the propeller fan shaft is positioned almost at the center with respect to the height in the blowing direction in the outer shape of the box, and the height of the blowing port from the blade outer diameter in the blowing direction is set between the blade outer diameter on the opposite side and the fan casing. It is about the size of. This is because the diffuser air path and the air path in the space behind the diffuser provide directivity to the wind direction, so there is no need to attach a long guide to the air outlet, which also reduces the size in the height direction, There is no need to provide a space for air suction between the fan and the blower main body, and an apparatus with a small installation volume and a good space factor can be obtained.

Further, the blower of the present invention has a propeller fan which is driven to rotate by a motor to perform a blowing action, a bell mouth casing for guiding air to the propeller fan, and a bell mouth casing which is connected to an outlet end of the bell mouth casing. Has an outlet in a direction perpendicular to the rotation axis,
A fan casing having a substantially semicircular outer shape in a cross section orthogonal to the rotation axis, and a disk-shaped air path member provided in the fan casing so as to face the propeller fan at a predetermined interval; A new propeller fan with improved aerodynamics and noise characteristics is applied with only simple structural changes because multiple straightening plates, which are the left and right wind direction plates, are provided at the outlet in the width direction of the fan casing. A compact, low-noise, high-efficiency air curtain with a small installation volume can be constructed. That is, as a result, an air curtain having a high ability to block outside air can be obtained. Also,
By simply removing the makeup grill provided on the front surface of the blade and removing the blade fixing nut, the blade can be attached and detached, and the blade can be easily cleaned. Further, the propeller fan can be made larger in size as compared with a conventional blower using a plurality of propeller fans, the number of propeller fans used can be reduced, and the manufacturing cost can be reduced. In the description of the present invention, a structure that can be easily assembled by using a lightweight material such as Styrofoam has been described. However, it is effective to recycle by using a magnesium alloy thixomold product including a rotating body such as a fan blade. . This makes it possible to obtain light weight and strength, as well as to simplify the use of waste materials during production and after use after being discarded.

[0054]

According to the first aspect of the present invention, there is provided a propeller fan which is driven to rotate by a driving means to blow air,
A wind path forming means provided around the propeller fan for guiding the air flow in the axial direction and for guiding the air flow from the vicinity of the end of the propeller fan in the outer circumferential direction. A fan casing connected to a semicircular side wall so that a surface facing the outlet is kept at a distance from the propeller fan, and a shaft of the propeller fan housed in the fan casing. A thin plate-shaped air path member larger than the outer diameter of the blades of the propeller fan forming a diffuser air path that is provided so as to face the propeller fan at predetermined intervals in the direction and guides air blowing in the outer circumferential direction between the side wall and Between the thin plate-like air passage member and the other side wall provided on the surface facing the side wall from the vicinity of the outer periphery of the fan casing from the diffuser air passage. Since the manner to blown from the air outlet leads to, is in small and compact installation volume with a simple structure,
In addition, a blower that can blow a large amount of air with low noise and high efficiency can be obtained.

According to the second aspect of the present invention, a plurality of wind direction plates are provided at the outlet in the width direction of the fan casing to partition in the width direction and the air is blown in one direction from the outlet. A blower capable of blowing air far away without a large difference in wind speed depending on the position of the outlet is obtained.

According to the third aspect of the present invention, the air outlet is provided with a plurality of wind direction plates in the axial direction of the fan casing to partition in the axial direction, and the wind direction plates are rotatable in the axial direction. It is possible to easily change the wind direction without changing the mounting angle, and to easily cope with the case where there is outside wind.

According to the fourth aspect of the present invention, a propeller fan which is driven to rotate by the driving means to blow air, and which is provided around the propeller fan and guides air to the propeller fan, and near the outlet end of the propeller fan A fan casing airflow path forming means for guiding airflow from the fan casing to the outer peripheral direction, a fan casing outlet provided to blow the outer peripheral airflow in one direction substantially orthogonal to the rotation axis of the propeller fan, and An outer peripheral portion of a fan casing connected to a side wall having a semicircular shape so that a surface facing an outlet covers the outer periphery of the propeller fan, and a propeller fan housed in the outer peripheral portion of the fan casing at predetermined intervals in an axial direction of the propeller fan. A thin air path that forms a diffuser air path that is provided so as to be opposed to the side wall and guides air blowing in the outer circumferential direction between the side wall and the side wall Material, and a back air passage that guides airflow in the outer peripheral direction from the diffuser air passage and blows out from the air outlet between the thin plate-shaped air passage member and the other side wall provided on the surface facing the side wall, and Since a plurality of wind direction plates are provided at the air outlet and the air outlet is partitioned and the air is blown in one direction, a blower capable of blowing a large amount of air in one direction to a distant place with a simple structure can be obtained.

According to the fifth aspect of the present invention, a propeller fan which is driven to rotate by a driving means to blow air, and which is provided around the propeller fan and guides the blow in the axial direction, and which is provided around the end of the propeller fan from the vicinity thereof. Airflow path forming means for guiding the airflow in the direction, and an airflow port for blowing the airflow in the outer peripheral direction in one direction orthogonal to the rotation axis of the propeller fan, using the airflow path forming means as one side wall, A fan casing connected to a side wall having an outer peripheral surface excluding a semicircular shape, and an outer peripheral direction between the side wall provided in the fan casing and provided to face the propeller fan at a predetermined interval in an axial direction of the propeller fan. A thin plate-like air path member that forms a diffuser air path that guides air to the propeller fan from the outlet end to the outer diameter of the propeller fan blades. The dimensions between the semicircular outer peripheral surface of the casing and the outer diameter of the blades of the propeller fan are almost the same, so the dimensions in the blowing direction are small, and there are no restrictions on mounting by changing the suction and blowing directions. Thus, a small-sized blower with good usability can be obtained.

According to the sixth aspect of the present invention, since at least a part of the air path forming means or the fan casing is integrally formed with styrofoam or the like, further parts can be integrated and a blower having a good assembling property can be constructed. .

According to the seventh aspect of the present invention, since the suction R portion of the integrally formed air path forming means is formed in a mortar shape to cover the outer peripheral portion of the propeller fan, the suction flow is less likely to be deviated. The generation of unpleasant noise can be suppressed.

According to the invention of claim 8, the size of the fan casing in the width direction is 1.4 to 1.5 times the outer diameter of the blades of the propeller fan, and the fan casing is connected to the rotating shaft of the fan. Because it was a semi-circular shape with the center,
The wind speed in the width direction from the outlet can be made uniform and the entire device can be made compact.

According to the ninth aspect of the present invention, the size in the height direction of the fan casing having the outlet at one end is substantially equal to the size in the width direction of the fan casing with respect to the outer diameter of the blade of the propeller fan. Therefore, the outer shape of the box is substantially square, and the angle of the wind direction of the suction and the blowout has an angle, so that there is no restriction on the mounting to the ceiling surface or the wall surface, and a compact blower easy to arrange can be obtained.

According to the tenth aspect of the present invention, since the second outlet air path and the opening / closing damper for opening and closing the second air outlet path are provided on the wall surface adjacent to the air outlet of the fan casing or on the wall surface forming the air outlet, When used as a cool air blower in a washroom, for example, it is possible to obtain a blower that can be applied to a plurality of uses, such as being able to use the wind blown out from the second blow-out air path to prevent clouding of a mirror.

According to the eleventh aspect of the present invention, since the heat absorbing / heating element is provided at the outlet of the centrifugal diffuser air passage,
Because it is located in the place where the wind speed is the highest, not only heat exchange efficiency is good, but also the capacity of the heater can be increased and an air curtain with a heating function with a large heater capacity can be configured, and it can be effectively used as auxiliary heating in winter etc. I can do it.

According to the twelfth aspect of the present invention, a heat absorbing / heating element is provided near the outlet, the second outlet air passage is provided on the wall adjacent to the outlet of the fan casing, and one of the outlets near the outlet is provided. Since the opening is closed, the warm air blown from the second blow air passage of the blower can be effectively used for another purpose such as fogging of a mirror.

According to the thirteenth aspect of the present invention, since the blower is connected in the direction in which the back face facing the suction port of the propeller fan is aligned and the blowout ports are arranged, the axial dimension of the wind blown out from the blowout port is reduced. This doubles the air volume and doubles the flow rate, thus providing a blowing system that can greatly improve the ability to block outside air.

According to the fourteenth aspect of the present invention, a plurality of air blowers are provided in parallel so that the suction port and the air outlet of the propeller fan are adjacent to each other, and the air curtain flow is formed by the air flow from the plurality of air blowers. When the width of the blower is matched with the width of the building, the number of drive motors used can be reduced compared to conventional products, the manufacturing cost can be reduced, and the installation volume can be reduced.

According to the fifteenth aspect of the present invention, a plurality of propeller fans are connected in parallel so that the suction port and the outlet port of the propeller fan are adjacent to each other, and two sets of the plurality of connected propeller fans are provided. The rear side opposite to the suction port is aligned and the outlets are arranged in the direction in which the outlets are lined up, so the axial size of the air blown out from the outlets is doubled and the air volume is doubled, especially when the outside wind is strong A ventilation system is provided that enhances its ability to deal with other influences, such as its blocking ability.

According to the sixteenth aspect of the present invention, the propeller fan, which is rotationally driven by the driving means of the blower, blows the air in the axial direction from the suction port to the outer peripheral direction from the vicinity of the end of the propeller fan through the diffuser air path. And blowing the air of the propeller fan from an air outlet provided at one end of the fan casing of the air blower that houses the diffuser air passage.The air blower is arranged so that the suction port and the air outlet of the propeller fan are adjacent to each other. Forming a blown air flow by blowing from a set of a plurality of blowers connected in parallel, and disposing another set of a plurality of blowers at a distance from the set of a plurality of blowers; Forming another set of blowing air in another direction in another direction, wherein the other set sucks and blows out one set of blowing air. It is easy to use because it can be applied to various uses such as providing a closed space with an air curtain because an air flow is formed on a plurality of surfaces with different angles by providing an angle between the suction port and the air outlet The blowing method of the blowing system is obtained.

According to the seventeenth aspect of the present invention, a rotatable wind direction plate is provided at the outlet to change the angle of the wind direction plate so that the direction of the air blown in one direction can be changed. The blowing method of the blowing system applicable to the configuration is obtained.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a blower according to an embodiment of the present invention.

FIG. 2 is a front view of the blower according to the embodiment of the present invention in a state where a makeup grill is removed.

FIG. 3 is a side sectional view of a blower according to another embodiment of the present invention.

FIG. 4 is a side sectional view of a blower according to another embodiment of the present invention.

FIG. 5 is a side sectional view for explaining assembly of a blower according to another embodiment of the present invention.

FIG. 6 is an explanatory view of an installation of a blower according to an embodiment of the present invention.

FIG. 7 is an explanatory view of a blower according to an embodiment of the present invention.

FIG. 8 is an explanatory view for attaching a blower according to an embodiment of the present invention.

FIG. 9 is a front view of a blower according to another embodiment of the present invention, with a makeup grill removed.

FIG. 10 is a bottom view of a blower according to another embodiment of the present invention.

FIG. 11 is an explanatory view of mounting a blower according to another embodiment of the present invention.

FIG. 12 is an explanatory view of mounting a blower according to another embodiment of the present invention.

FIG. 13 is a bottom view of a blower according to another embodiment of the present invention.

FIG. 14 is an explanatory view of a blower according to another embodiment of the present invention.

FIG. 15 is a side sectional view of a conventional blower.

FIG. 16 is a side sectional view of a conventional blower.

FIG. 17 is an explanatory view of mounting a conventional blower.

FIG. 18 is an explanatory view of mounting a conventional blower.

[Explanation of symbols]

1 drive motor, 2 propeller fan, 3 first
4 second air path member, 5 bell mouth casing, 9 centrifugal diffuser air path, 10 centrifugal diffuser air path back space, 11 motor mounting plate, 14 decorative grille, 15 body, 16 fan casing, 17 left and right Wind direction board, 18 front and rear wind direction boards, 19 integral casing, 20 integral casing, 21 heat absorbing / heating element, 22 blade fixing nut,
23 motor fixing screw, 24 second outlet, 25
Opening / closing damper, 26 Blow-off block, 27 Scroll casing back space, 30 Bellmouth, 3
DESCRIPTION OF SYMBOLS 1 Smooth air path, 32 multilayer parallel nozzles, 33 guides, 34 roundness, 35 blower housing, 36 motor mounting plate, 101 blower main body, 102 main body mounting bracket, 103 suction port, 104 air outlet, 1
05 Upper wall of entrance / exit, 106 Open entrance / exit, 107 ceiling surface, 108 floor surface, 109 Wall surface without opening, 110 Suction space, 113 Cross-flow fan, 114 Drive motor, 115 Fan casing, 116 Wind direction plate.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) F04D 29/66 F04D 29/66 N F24F 1/00 316 F24F 1/00 316 (72) Inventor Shigeki Kobayashi Chiyoda-ku, Tokyo 2-3-2 Marunouchi, Mitsubishi Electric Co., Ltd. (72) Inventor Hitoshi Kikuchi 2-3-2, Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Co., Ltd. (72) Satoshi Hayashi Marunouchi, Chiyoda-ku, Tokyo 2-3-2, Mitsui Electric Co., Ltd. (72) Inventor Joji Oshima 2-3-2, Marunouchi, Chiyoda-ku, Tokyo F-term (reference) 3H032 CA08 CA09 3H034 AA02 AA11 BB02 BB20 CC03 DD06 DD12 DD24 DD25 DD26 DD27 EE02 EE06 EE12 EE18 3H035 DD04 DD05 3L049 BD03

Claims (17)

[Claims] A propeller fan which is driven to rotate by a driving means to blow air, and a wind provided around the propeller fan for guiding the blow in the axial direction and for guiding the blow in the outer circumferential direction from near the end of the propeller fan. Road forming means;
The air path forming means is used as one side wall, and an outlet for blowing the air in the outer peripheral direction is provided at one end, and a multi-end surface facing the outlet is formed in a semicircular shape so as to keep a distance from the propeller fan. A fan casing connected to the side wall and provided in the fan casing so as to be opposed to the propeller fan at a predetermined interval in an axial direction of the propeller fan and to guide airflow in an outer circumferential direction between the side wall and the fan casing A thin-plate-shaped air path member larger than the outer diameter of the blades of the propeller fan forming the diffuser air path,
The air from the diffuser air path is guided from the vicinity of the outer periphery of the fan casing between the thin plate-shaped air path member and the other side wall provided on the surface facing the side wall, and is blown out from the air outlet. Blower. 2. The blower according to claim 1, wherein a plurality of wind direction plates are provided in the blow outlet in the width direction of the fan casing to partition in the width direction, and the blow is performed in one direction from the blow outlet. 3. An air outlet, wherein a plurality of wind direction plates are provided in an axial direction of a fan casing to partition in an axial direction, and the wind direction plates are rotatable in an axial direction.
Or the blower according to 2. 4. A propeller fan, which is driven to rotate by a driving means and blows air, is provided around the propeller fan, guides air to the propeller fan, and blows air from the vicinity of the outlet end of the propeller fan in the outer circumferential direction. Means for forming an air path of the fan casing for guiding, an outlet of the fan casing for blowing the air in the outer peripheral direction in a direction substantially perpendicular to the rotation axis of the propeller fan, and a surface facing the outlet for the outer periphery of the propeller fan. An outer peripheral portion of the fan casing connected to the semicircular side wall so as to cover the outer peripheral portion of the fan casing, and provided so as to face the propeller fan at a predetermined interval in the axial direction of the propeller fan and housed in the outer peripheral portion of the fan casing. A thin air passage member forming a diffuser air passage that guides air blow in an outer circumferential direction between the air passage member and the side wall; A back-side ventilation path that guides airflow from the diffuser air path in the outer peripheral direction and blows out the air from the air outlet between the air-flow path member and the other side wall provided on the surface facing the side wall. A blower, wherein a plurality of wind direction plates are provided at an outlet and the outlet is partitioned to blow air in one direction. 5. A propeller fan which is driven to rotate by a driving means to blow air, and a wind which is provided around the propeller fan and guides the blow in the axial direction, and guides the blow in the outer circumferential direction from near the end of the propeller fan. Road forming means;
This air path forming means is used as one side wall, and an air outlet for blowing the air in the outer peripheral direction in one direction substantially perpendicular to the rotation axis of the propeller fan is provided, and the outer peripheral surface excluding the air outlet is formed in a semicircular shape. A fan casing connected to the side wall and provided in the fan casing so as to be opposed to the propeller fan at a predetermined interval in an axial direction of the propeller fan and to guide airflow in an outer circumferential direction between the side wall and the fan casing A thin plate-like air path member forming a diffuser air path,
Wherein the dimension from the outlet end of the outlet to the outer diameter of the blades of the propeller fan is substantially the same as the dimension between the semicircular outer peripheral surface of the fan casing and the outer diameter of the blades of the propeller fan. A blower, characterized in that: 6. The air path forming means or at least a part of the fan casing is integrally formed of styrofoam or the like.
Blower as described. 7. The at least one of claims 1 to 6, wherein the air path forming means is integrally formed, and a suction R portion of the air path forming means is formed in a mortar shape to cover an outer peripheral portion of the propeller fan. Blower. 8. The width of the fan casing in the width direction of 1.4 to 1.10 relative to the outer diameter of the blades of the propeller fan.
The blower according to at least one of claims 1 to 7, wherein the fan casing is made five times larger and the fan casing is formed in a substantially semicircular shape around the rotation axis of the fan. 9. A fan casing having an outlet as one end, wherein a size in a height direction of the fan casing is substantially equal to a dimension in a width direction of the fan casing.
A blower according to at least one of the preceding claims. 10. A system according to claim 1, further comprising a second outlet air passage and an opening / closing damper for opening and closing the second outlet air passage on a wall surface adjacent to or forming the outlet of the fan casing. A blower according to at least one of the preceding claims. 11. The blower according to claim 1, further comprising a heat absorbing / heating element at an outlet of the centrifugal diffuser air passage. 12. A heat-absorbing / heating element is provided in the vicinity of the air outlet, a second air outlet is provided on a wall surface adjacent to the air outlet of the fan casing, and one of the air outlets near the second air outlet is provided. The blower according to at least one of claims 1 to 10, wherein the opening is closed. 13. At least one of claims 1 to 12
A blower system, comprising a plurality of blowers described above, a back face facing a suction port of a propeller fan being aligned, and being connected in a direction in which the blowout ports are arranged. 14. At least one of claims 1 to 12
A plurality of the blowers described above are provided in parallel so that the suction port and the blowout port of the propeller fan are adjacent to each other, and an air curtain flow is formed by blast flows from a plurality of blowers that suck in from the same direction and blow out in the same direction. A blower system characterized by the following. 15. At least one of claims 1 to 12
A plurality of the blowers described above are connected in parallel so that the suction port and the blow-out port of the propeller fan are adjacent to each other, and two sets of the connected pieces are provided opposite to the suction ports of the propeller fan in each set. A blower system, wherein the air outlets are arranged in a direction in which the back surfaces of the air outlets are aligned with each other. 16. A propeller fan, which is rotationally driven by a driving means of a blower, blows axial ventilation from a suction port from the vicinity of an end of the propeller fan to an outer peripheral direction through a diffuser air path, and the diffuser wind. Blowing the air of the propeller fan from an air outlet provided at one end of a fan casing of the air blower for accommodating a path, and arranging a plurality of air blowers in parallel so that the air inlet and the air outlet of the propeller fan are adjacent to each other. Forming a single airflow by blowing from a set of a plurality of blowers connected to the other, and disposing another similar set of a plurality of blowers at a distance from the plurality of the blowers, Forming a blast flow in the other direction of the set to be blown out, and blowing the blast flow of the other set by the other set and blowing out the other blast flow And forming a continuous flow of air on a plurality of surfaces having different angles by providing an angle between the air inlet and the air outlet of the blower so as to form a continuous air flow. 17. The air blower according to claim 16, wherein a rotatable wind direction plate is provided at the outlet to change an angle of the wind direction plate so as to change a direction of the air blown in one direction. Ventilation method of ventilation system.