JP6537709B2 - Air blower - Google Patents

Description

  The present invention relates to an air blower in which a main body is embedded in a ceiling surface or a wall surface and a cosmetic grill portion is disposed indoors.

In recent years, air purification devices are widely used to keep the air in the building clean. Electric air cleaning apparatus which is one embodiment of the air cleaning apparatus, generally, an ionizing unit is a charging unit for charging the dust which is suspended particles in the air by the corona discharge, the strip conductive been dust And a collector unit which is a dust collection unit to be attached to the dust collection plate by Coulomb force. Patent Document 1 discloses an air cleaning device in which a main body is embedded in a ceiling and only a cosmetic grill portion is disposed indoors.

Patent No. 4842042 gazette

  However, since the space under the ceiling may be narrow depending on the building, the invention disclosed in Patent Document 1 needs to make the main body as small as possible in order to be installable in many buildings. In order to make the main body as small as possible, it is necessary to reduce the distance between the discharge part and the air passage opening part, but if foreign matter is inserted from the outside up to the vicinity of the discharge part where high voltage is applied, it will cause a failure. sell. For this reason, it is necessary to narrow the air passage opening so that foreign matter can not be inserted from the outside, but narrowing the air passage opening increases the pressure loss. Therefore, it is difficult to miniaturize the main body unless a high-power air blower is used. In addition, narrowing the air passage opening causes a problem of increased noise.

  The present invention has been made in view of the above, and it is an object of the present invention to obtain an air blower that can suppress an increase in the size of the main body while being equipped with an air purification device, and can realize low noise.

  In order to solve the problems described above and achieve the object, the present invention has a main body which has a blower and an air cleaning device inside and is embedded in a ceiling or wall of a room, and a front flat installed on the indoor side of the main body A blower comprising: a cosmetic grill having a shape; a room air is sucked by a blower from a gap between a ceiling or a wall and the cosmetic grille; and the air passing through the air purification device is blown into the room; The cosmetic grill has a rib-like first protrusion provided on the periphery, and the cosmetic grill has a rib-like second protrusion spaced apart from the first protrusion. The gap between the first protrusion and the second protrusion is serpentine.

  ADVANTAGE OF THE INVENTION The air blower concerning this invention has an effect that the enlargement of a main body can be suppressed, and low noise can be implement | achieved, while providing an air purification apparatus.

The perspective view of the air blower which concerns on Embodiment 1 of this invention Sectional drawing which shows the attachment state of the air blower which concerns on Embodiment 1. Rear view of blower according to Embodiment 1 Front view of the blower according to Embodiment 1 with the cosmetic grill removed Side view of blower according to Embodiment 1 The perspective view in the state which removed the makeup grill of the air blower which concerns on Embodiment 1. Side view of the blowing side of the blower according to Embodiment 1 The perspective view of the fan casing of the air blower concerning Embodiment 1. The perspective view of the dust removal filter of the air blower concerning Embodiment 1. The perspective view of the makeup grill of the air blower which concerns on Embodiment 1. The perspective view in the state which opened the cosmetic grill of the air blower which concerns on Embodiment 1. Schematic view of the protrusion of the blowout portion of the blower according to the first embodiment Schematic view of the protrusion of the blowout portion of the blower according to the first embodiment The perspective view of the high voltage unit of the air blower which concerns on Embodiment 1. The perspective view which shows the internal structure of the high voltage unit of the air blower which concerns on Embodiment 1. Circuit diagram of the high voltage unit according to the first embodiment The figure which shows the modification of the air blower which concerns on Embodiment 1.

  Hereinafter, a blower according to an embodiment of the present invention will be described in detail based on the drawings. The present invention is not limited by the embodiment.

Embodiment 1
FIG. 1 is a perspective view of a blower according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing the mounting state of the air blower according to the first embodiment. FIG. 3 is a rear view of the blower according to the first embodiment. FIG. 4 is a front view of the blower according to the first embodiment with the cosmetic grill removed. FIG. 5 is a side view of the blower according to the first embodiment. FIG. 6 is a perspective view of the air blower according to the first embodiment with the cosmetic grill removed. FIG. 7 is a side view of the blowing side of the air blower according to the first embodiment. The blower according to the first embodiment includes a resin main body 1 embedded in a ceiling or a wall, a centrifugal multi-blade fan 2, a fan casing 4 for housing the multi-blade fan 2, and a multi-blade fan. A high voltage unit 5 which is an air cleaning device disposed on the downstream side of 2 and a makeup grill 6 are provided.

  The multi-blade fan 2 includes a motor 7 and a fan 3 inserted and coupled to a drive shaft of the motor 7. It is also possible to use an axial flow fan instead of the multi-blade fan 2. A terminal block 8 which can be pulled out of the main body 1 and a circuit storage case 9 for storing the control circuit 10 are provided on the back of the main body 1. The terminal block 8 can be easily connected to an external power supply wire by pulling it out of the main body 1.

  The air sucked into the fan casing 4 from the suction port 4 d of the fan casing 4 through the makeup grill 6 passes the high voltage unit 5 in the wake along the inner wall of the main body 1 by the multiblade fan 2, and the makeup grill It is blown out into the room from 6.

  As shown in FIG. 1 to FIG. 4, the main body 1 is in the form of a box whose one side is open, and the motor 7 is installed on the opposite side of the open side. In addition, the surface in which the motor 7 was installed becomes a top surface in the installation state to a ceiling. The main body 1 has a square flange 1 a on the front surface that protrudes in a direction parallel to the mounting surface 16. The blower is fixed to the mounting surface 16 with fixing screws at four or more places using fixing screw mounting portions 1b provided at eight places of the flange 1a. In addition, although a wood screw can be applied to a fixing screw, it is not limited to this.

  The fan casing 4 mainly accommodates the multi-blade type fan 2, and the lower surface is opened to form a suction port 4d. As shown in FIGS. 4 and 6, a dust removal filter 13 is installed upstream of the suction port 4d. FIG. 8 is a perspective view of a fan casing of the blower according to the first embodiment. FIG. 9 is a perspective view of the dust removal filter of the blower according to the first embodiment. The fan casing 4 includes a fixing portion 4 a and a hook hooking portion 4 b for fixing the dust removal filter 13. The dust removing filter 13 is fixed to the fan casing 4 by fixing the fixing portion 13 a of the dust removing filter 13 to the fixing portion 4 a and engaging the claw portion 13 b of the dust removing filter 13 with the hook hooking portion 4 b. .

  FIG. 10 is a perspective view of a cosmetic grill of the blower according to the first embodiment. The cosmetic grill 6 is a member whose main purpose is to improve the design of the air blower and prevent foreign matter from mixing in the fan 3. The makeup grill 6 is an integral molding made of resin. In the first embodiment, in consideration of the design, the cosmetic grill 6 has a flat front surface. By making the front face of the cosmetic grill 6 flat, air can be sucked and blown out in a direction parallel to the mounting surface 16 such as a ceiling or a wall as shown in FIG.

  The cosmetic grill 6 is fixed by the bearing 6a and the claw 6b engaging with the shaft 1d and the claw 1e of the main body 1, respectively. FIG. 11 is a perspective view of the blower according to the first embodiment with the cosmetic grille open. By removing the claws 6b of the cosmetic grill 6 from the claws 1e of the main body 1, as shown in FIG. 11, the cosmetic grill 6 is opened and closed in the rotational direction about the bearing 6a and the shaft 1d.

  As shown in FIG. 10, a rib-like protrusion 6e, which is a second protrusion, is provided at the blowout portion of the makeup grill 6. The protrusion 6e has a shape in which a convex portion and a concave portion are connected in the longitudinal direction. Further, as shown in FIG. 6, the main body 1 is also provided with a rib-like protrusion 1 g which is a first protrusion in the blowout portion. The protrusion 1 g has a shape in which a convex portion and a concave portion are connected in the longitudinal direction. The protrusion 1 g is provided around the high voltage unit 5. The protrusions 6e and the protrusions 1g have the same shape and the same size, and the pitch of the projections and the recesses is also the same. As shown in FIG. 7, the protrusion of the protrusion 1g and the recess of the protrusion 6e are opposed along the protrusion direction of the protrusion 1g and the protrusion 6e, and the recess of the protrusion 1g and the protrusion of the protrusion 6e are the protrusion 1g and the protrusion 6e. Opposite along the direction of protrusion of Therefore, the gap 17 between the protrusion 1 g and the protrusion 6 e has a meandering shape. Here, in the meandering gap, when viewed along the longitudinal direction, one of the two members facing each other across the gap is a convex portion, the other is a concave portion, and one is a concave portion and the other is a convex portion. It means that and appear alternately. That is, in the first embodiment, the gap 17 has a meandering shape because the protrusion of the protrusion 1 g and the recess of the protrusion 6 e face each other when the gap 17 is viewed along the longitudinal direction, and the recess of the protrusion 1 g And the portion of the protrusion 6e facing each other appear alternately. Examples of meandering shapes may include, but are not limited to, sinusoidal shapes, triangular shapes, pulse shapes and meander shapes.

  The width of the gap 17 is kept approximately constant. The gap 17 at the blowout portion has a width at which no foreign object can be inserted. The gap 17 can be prevented from being inserted into the gap 17 by setting the gap 17 to less than 12 mm smaller than the diameter of the test finger used for the test of protection from the charging part defined in the Electrical Appliances and Materials Safety Act. When the gap 17 is less than 12 mm, it corresponds to the second grade of protection of the IEC 60529, which is a standard of the International Electrotechnical Commission, also referred to as the IEC (International Electrotechnical Commission). The width of the gap 17 is not limited to less than 12 mm.

  FIG. 12 is a schematic view of a protrusion of the blowout portion of the blower according to the first embodiment. The protrusions 1g and the protrusions 6e have a sine waveform as shown in FIG. FIG. 13 is a schematic view of a protrusion of a blowing portion of the air blower according to the first embodiment. As shown in FIG. 13, the protrusions 1 g and the protrusions 6 e may have triangular waveforms.

  In the blower according to the first embodiment, it is necessary to separate the suction side 14 and the blowout side 15 because the air is sucked from one half of the cosmetic grill 6 and blown out from the other half. As shown in FIG. 10, the makeup grill 6 is provided with a suction blowout partition rib 6c on the back surface. Further, as shown in FIG. 6, the main body 1 is provided with suction blowout dividing ribs 1f at two places. As shown in FIG. 8, the fan casing 4 is provided with a suction blowout dividing rib 4 c that divides the suction side 14 and the blowout side 15. The suction and blowing directions of the blower are three directions as indicated by arrows in FIG.

  FIG. 14 is a perspective view of the high voltage unit of the air blower according to the first embodiment. FIG. 15 is a perspective view showing an internal configuration of the high voltage unit of the air blower according to the first embodiment. FIG. 16 is a circuit diagram of the high voltage unit according to the first embodiment. The high voltage unit 5 has a discharge electrode 11, a counter electrode 12 and an outer shell 18. The outer shell 18 is made of resin. The discharge electrode 11 is a wire-like electric conductor having strength. The counter electrode 12 is an electrical conductor. Although a material of the discharge electrode 11 can be exemplified by tungsten, it is not limited thereto. As a material of the counter electrode 12, although stainless steel can be illustrated, it is not limited to this. The discharge electrode 11 and the counter electrode 12 are made of a material that does not rust with water so that they can be washed with water when dust adheres. As shown in FIG. 16, the high voltage unit 5 has a structure in which the counter electrode 12 is disposed so as to sandwich the discharge electrode 11 from both sides. A high voltage is applied between the voltage-side discharge electrode 11 and the ground-side counter electrode 12 to generate a discharge and an electric field space.

  FIG. 17 is a view showing a modification of the blower according to the first embodiment. In the air blower according to the first embodiment, the high voltage unit 5 is disposed on the downstream side of the multi-blade fan 2, and a wavelike protrusion 1 g is provided on the blowout part of the main body 1. In the case where the multi-blade fan 2 is installed so that the drive shaft of the motor 7 becomes parallel to the mounting surface 16 as shown in FIG. It is more space efficient to arrange the high voltage unit 5 on the side. When the high voltage unit 5 is disposed on the upstream side of the multi-blade fan 2, the protrusion 1 g may be provided on the suction side of the main body 1 and the protrusion 6 e may be provided on the suction side of the cosmetic grill 6.

  In the blower according to the first embodiment, since the gap 17 has a serpentine shape, the area of the gap 17 per unit area can be increased as compared with the case where the gap is linear. Therefore, if the size of the main body 1 is the same, the area occupied by the gap 17 is larger than in the case where the gap is linear. Therefore, the blower according to the first embodiment can suppress increase in size of the main body 1 and realize low noise while being provided with the high voltage unit 5 that is an air purification device.

  The configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

  Reference Signs List 1 main body, 1a flange, 1b fixing screw attachment portion, 1d axis, 1e, 6b claw, 1f, 4c, 6c suction blowout separating rib, 1g, 6e protrusion, 2 multi-blade type fan, 3 fans, 4 fan casings, 4a, 13a fixed part, 4b claw hook part, 4d suction port, 5 high voltage unit, 6 makeup grille, 6a bearing, 7 motor, 8 terminal block, 9 circuit storage case, 10 control circuit, 11 discharge electrode, 12 counter electrode, 13 Dust removal filter, 13b claw, 14 suction side, 15 blowout side, 16 mounting surface, 17 gap, 18 outer shell.

Claims (2)

It has a fan and an air cleaner inside, and it has a main body embedded in the ceiling or wall of the room, and a cosmetic grill installed on the indoor side of the main body, and the air blower makes the gap between the main body and the cosmetic grill A blower which sucks in air from a room and blows air through the air purification device into the room,
The main body has a rib-like first protrusion provided around the air cleaning device,
The cosmetic grill has a rib-like second protrusion that is opposed to the first protrusion at a distance.
A gap between the first protrusion and the second protrusion has a meandering shape.   The air blower according to claim 1, wherein a gap between the first protrusion and the second protrusion complies with International Electrotechnical Commission Standard Standard IEC60529 protection grade 2.