JPWO2016121485A1 - Fan guard and blower - Google Patents

Abstract

The fan guard (10) includes an inner part (11), an outer frame part (12), and a guard part (13). The guard portion (13) includes a plurality of first frames (14) that form a plurality of first opening regions (R10A to R10E) that are arranged in the circumferential direction and surround the inner portion in an annular shape as a whole, and each first opening. A plurality of first linear ribs (15) disposed in the regions (R10A to R10E) and provided so as to partition each first opening region. When viewed with respect to the first first opening region and the second first opening region adjacent to the first first opening region, a plurality of first linear shapes defining the first first opening region The rib (15) and the plurality of first linear ribs (15) that define the second first opening region are continuous in a bent shape or are arranged not to be continuous with each other. ing. The fan guard (10) can set the direction of the airflow blown through the opening area for each of the plurality of opening areas.

Description

  The present invention relates to a fan guard for guarding a fan, and a blower provided with such a fan guard.

  Blowers such as fans, circulators, and air conditioner outdoor units include a fan. In order to prevent fingers and the like from coming into contact with the fan, the fan guard is disposed so as to cover the fan. In the following description, the fan guard means a member arranged so as to cover the fan from the front side, and is distinguished from the fan guard and the rear side fan guard arranged so as to cover the fan from the back side. Shall be. Conventionally, fan guards having various shapes are known.

  A fan guard 10Z1 shown in FIG. 43 includes an inner portion 11, an outer frame portion 12, and a guard portion 13. The guard part 13 includes a plurality of frames 14 and a plurality of linear ribs 15. The inner portion 11 has a closed disk shape, and the outer frame portion 12 has an annular shape. The plurality of frames 14 have a shape extending radially around the inner portion 11 and are arranged at intervals of 30 ° in the circumferential direction. The plurality of linear ribs 15 are arranged concentrically as a whole, and divide a space formed between adjacent frames 14 into a plurality of opening regions.

  The guard part 13 of the fan guard 10Z2 shown in FIG. Each of the plurality of frames 14 has a linear shape and extends radially about the inner portion 11. The guard portion 13 of the fan guard 10Z3 shown in FIG. The plurality of frames 14 have a curved shape and extend toward the outer frame portion 12 around the inner portion 11.

  The guard portion 13 of the fan guard 10Z4 shown in FIG. The plurality of frames 14 have a shape that curves in the opposite direction to that of the fan guard 10Z3 (FIG. 45). The guard part 13 of the fan guard 10Z5 shown in FIG. 47 includes a plurality of frames 14 and a plurality of linear ribs 15. The plurality of linear ribs 15 form one circle as a whole.

  A guard portion 13 of the fan guard 10Z6 shown in FIG. The plurality of linear ribs 15 have a linear shape and are arranged in a lattice shape. In addition to these, fan guards disclosed in Japanese Patent No. 4721854 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2013-185533 (Patent Document 2) are known.

Japanese Patent No. 4721854 JP 2013-185533 A

  In the conventional fan guard, only frames and ribs having a simple shape such as a lattice shape, a radial shape or a concentric shape are arranged between the inner side portion and the outer frame portion. These frames and ribs only divide the area between the inner part and the outer frame part into a plurality of opening areas having a simple shape, and a similar airflow comes out from each area. It was.

  The present invention adopts a specific configuration in the shape of a frame or rib that divides a region between an inner portion and an outer frame portion to form a plurality of opening regions, so that the direction of airflow blown through the opening region It is an object of the present invention to provide a fan guard that can be set for each of a plurality of opening regions, and a blower provided with such a fan guard.

  The fan guard based on this invention is a fan guard for guarding a fan, Comprising: Outer frame part, The inner part arrange | positioned inside the said outer frame part, Between the said outer frame part and the said inner part A plurality of guard portions provided on the inner frame, and the guard portions are arranged in a circumferential direction by partitioning a region between the outer frame portion and the inner portion so as to surround the inner portion as a whole in an annular shape. A plurality of first frames forming the first opening region, and a plurality of first linear ribs disposed in each of the first opening regions and provided to partition each of the first opening regions When the first opening area and the second first opening area adjacent to the first opening area are divided, the first opening area is partitioned. The plurality of first linear ribs and the second first opening region are separated from each other. The plurality of the first linear ribs you are, either continuously in a manner that bends or are arranged not continuous with each other.

  Preferably, each of the plurality of first frames has an arc shape formed of a part of a circular shape, and each of the plurality of arc shapes constituting the plurality of first frames is included. Corresponding circular centers are provided at different positions.

  Preferably, the plurality of first linear ribs arranged in one first opening region are arranged concentrically.

  Preferably, the center position of the concentric circles defining the positions of the plurality of first linear ribs is a position different from the center position of the inner portion.

  Preferably, the plurality of first linear ribs arranged in one first opening region are arranged at equal intervals in the radial direction of the concentric circles.

  Preferably, the first linear rib has one end portion and the other end portion in a circumferential direction centering on the inner side portion, and the one end portion of the first linear rib and the above-described end portion. When the distance between the center position of the inner portion is L1 and the distance between the other end of the first linear rib and the center position of the inner portion is L2, all the first linear shapes The relationship of L1> L2 is established for the ribs.

  Preferably, the first linear rib has one end portion and the other end portion in a circumferential direction centering on the inner side portion, and the one end portion of the first linear rib and the above-described end portion. When the distance between the center position of the inner part is LA and the distance between the other end of the first linear rib and the center position of the inner part is LB, the relation of A> LB is satisfied. The first opening region in which the plurality of first linear ribs are provided on the inner side, and the first opening region in which the plurality of first linear ribs having a relationship of LB> LA are provided on the inner side. Are arranged alternately in the circumferential direction.

  Preferably, one end portion of the first frame is located on the outer periphery of the inner side portion, and the other end portion of the first frame is located on the outer frame portion.

  Preferably, when the guard part is projected in the axial direction toward the back side of the fan, the projected image of the guard part is a portion overlapping the guard part of the back side fan guard disposed on the back side of the fan. Have.

  The air blower based on this invention is provided with a fan and said fan guard based on this invention.

  Preferably, the blower device has a substantially circular ventilation port, further includes a housing that accommodates the fan, and an outer shape of the outer frame portion of the fan guard is larger than the ventilation port, The fan guard is arrange | positioned so that the said ventilation hole may be covered from the outer side of the said housing | casing.

  Preferably, the outer frame portion has a rectangular outer shape.

  In the above configuration, the plurality of linear ribs (the first linear ribs) that divide two adjacent first opening regions are continuous in a bent shape or are not continuous with each other. Has been placed. By applying such a concept to the fan guard, the direction of the air flow blown out through the first opening region can be set for each of the plurality of first opening regions.

It is a front view which decomposes | disassembles and shows a part of air blower in Embodiment 1. FIG. It is a side view which decomposes | disassembles and shows a part of air blower in Embodiment 1. FIG. FIG. 3 is a front view showing the fan guard in the first embodiment. FIG. 3 is a first front view showing a part of the fan guard in the first embodiment, and is a diagram for explaining a configuration of a plurality of frames (first frames). It is the 2nd front view showing a part of fan guard in Embodiment 1, and is a figure for explaining the composition of a plurality of frames (the 1st frame). FIG. 10 is a third front view showing a part of the fan guard in the first embodiment, and is a view for explaining the configuration of a plurality of frames (first frames). It is a 4th front view which shows a part of fan guard in Embodiment 1, and is a figure for demonstrating the structure of a some linear rib (1st linear rib). FIG. 10 is a fifth front view showing a part of the fan guard in the first embodiment, and is a view for explaining the configuration of a plurality of linear ribs (first linear ribs). It is a 6th front view showing some fan guards in Embodiment 1, and is a figure for explaining the composition of a plurality of frames (the 2nd frame). FIG. 10 is a seventh front view showing a part of the fan guard in the first embodiment, and is a view for explaining the configuration of a plurality of frames (second frames). It is the 8th front view showing a part of fan guard in Embodiment 1, and is a figure for explaining the composition of a plurality of linear ribs (2nd linear rib). It is a 9th front view showing some fan guards in Embodiment 1, and is a figure for explaining the composition of a plurality of linear ribs (2nd linear rib). FIG. 10 is a tenth front view showing a part of the fan guard in the first embodiment. It is an 11th front view which shows a part of fan guard in Embodiment 1, and is a figure for demonstrating the structure of a some linear rib (3rd linear rib). It is a 12th front view showing a part of fan guard in Embodiment 1, and is a figure for explaining the composition of a plurality of linear ribs (the 3rd linear rib). FIG. 22 is a thirteenth front view showing a part of the fan guard in the first embodiment. 6 is a front view showing a part of a fan guard in Embodiment 2. FIG. FIG. 10 is a front view showing a fan guard in a third embodiment. It is a front view which shows the fan guard in Embodiment 4. It is a front view which shows the fan guard in Embodiment 5. It is a front view which shows the fan guard in Embodiment 6. It is a front view which shows the fan guard in Embodiment 7. It is a front view which shows the fan guard in Embodiment 8. It is a front view which shows the fan guard in Embodiment 9. FIG. 38 is a front view showing a fan guard in the tenth embodiment. FIG. 38 is a front view showing a fan guard in an eleventh embodiment. It is a 1st front view which shows a part of fan guard in Embodiment 11, and is a figure for demonstrating the structure of a some flame | frame (1st frame). It is a 2nd front view which shows a part of fan guard in Embodiment 11, and is a figure for demonstrating the structure of a some flame | frame (1st frame). It is a 3rd front view which shows a part of fan guard in Embodiment 11, and is a figure for demonstrating the structure of a some linear rib (1st rib). It is a 4th front view which shows a part of fan guard in Embodiment 11, and is a figure for demonstrating the structure of a some linear rib (1st rib). FIG. 38 is a front view showing a fan guard in the twelfth embodiment. FIG. 38 is a first front view showing a part of the fan guard in the twelfth embodiment and is a view for explaining the configuration of a plurality of frames (first frames). It is a 2nd front view which shows a part of fan guard in Embodiment 12, and is a figure for demonstrating the structure of a some linear rib (1st rib). It is a 3rd front view which shows a part of fan guard in Embodiment 12, and is a figure for demonstrating the structure of a some linear rib (1st rib). FIG. 38 is a perspective view showing a blower device in the thirteenth embodiment. It is a front view which shows the air blower in Embodiment 13. FIG. 38 is a cross sectional view showing a blower device in a thirteenth embodiment. FIG. 38 is a longitudinal sectional view showing a blower device in a thirteenth embodiment. FIG. 38 is a front view showing a fan guard in the thirteenth embodiment. FIG. 38 is a perspective view showing a blower device in a fourteenth embodiment. FIG. 38 is a front view showing a fan guard in the fourteenth embodiment. FIG. 38 is a front view showing a fan guard in the fifteenth embodiment. It is a front view which shows the general fan guard 10Z1. It is a front view which shows the general fan guard 10Z2. It is a front view which shows the general fan guard 10Z3. It is a front view which shows the general fan guard 10Z4. It is a front view which shows the general fan guard 10Z5. It is a front view which shows the general fan guard 10Z6.

  Hereinafter, embodiments will be described with reference to the drawings. The same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

[Embodiment 1]
With reference to FIGS. 1-16, the fan guard 10 and the air blower 100 in Embodiment 1 are demonstrated.

(Blower 100)
1 and 2 are a front view and a side view, respectively, showing an exploded part of the blower 100. As shown in FIGS. 1 and 2, the air blower 100 is a device that functions as a fan, and includes a fan guard 10, a rear side fan guard 20, a fan 30, and a main body 40.

(Fan guard 10)
FIG. 3 is a front view showing the fan guard 10. As shown in FIG. 3, the fan guard 10 for guarding the fan 30 (FIG. 1) includes an inner portion 11, an outer frame portion 12, and a guard portion 13. The inner portion 11 (blocking portion) has a closed disk shape and is disposed so as to face the front center of the fan 30 (FIG. 1). The outer frame portion 12 (outer peripheral ring portion) has a ring shape (annular shape) having an inner diameter larger than the diameter of the fan 30 and is disposed on the outer periphery of the inner portion 11.

  The guard part 13 is provided between the inner part 11 and the outer frame part 12, and mainly prevents fingers and the like from coming into contact with the fan. The guard part 13 in the present embodiment includes a plurality of frames 14 (first frame), a plurality of linear ribs 15 (first linear ribs), a plurality of frames 16 (second frames), and a plurality of linear ribs 17. (Second linear rib) and a plurality of linear ribs 18 (third linear rib).

  The frame and the rib can be distinguished, for example, by their thickness (width), and the frame is configured to be thicker than the rib or thinner than the rib. In addition, for example, the frames overlap, cross, and smoothly connect to each other. However, in the region within the frame, every rib exists independently, and the ribs overlap each other. It is desirable to configure so that they do not cross or smoothly connect. The cross-sectional shape of the rib is preferably rectangular when the material is resin, and circular when the material is metal, but is not limited thereto. In addition, in the case where the frame and the rib have the same thickness, and what the ribs overlap with each other or cross or connect with each other are not intended to be positively excluded from the claims. Absent. Hereinafter, the frame 14, the linear rib 15, the frame 16, the linear rib 17, and the linear rib 18 will be described in order.

(Frame 14)
FIGS. 4-6 is a front view which shows a part of fan guard 10, and is a figure for demonstrating the structure of the some flame | frame 14 (1st flame | frame). The fan guard in the present embodiment has a plurality (five) of frames 14 (14A to 14E). For convenience of explanation, the linear rib 15, the frame 16, the linear rib 17, and the linear rib 18 are not shown in FIGS. 4 to 6 (see FIG. 3).

  As shown in FIG. 4, the frame 14 (14A) has an arc shape extending from the position A1 to the position A2, and the frame 14 (14B) has an arc shape extending from the position B1 to the position B2. The frame 14 (14C) has an arc shape extending from the position C1 to the position C2, and the frame 14 (14D) has an arc shape extending from the position D1 to the position D2. The frame 14 (14E) has an arc shape extending from the position E1 to the position E2.

  The positions A1, A2, B1, C1, and D1 are located on the outer periphery of the inner portion 11. The position B2 is located on the frame 14 (14A), the position C2 is located on the frame 14 (14B), the position D2 is located on the frame 14 (14C), and the positions E1 and E2 are respectively frames. 14 (14A) and the frame 14 (14D).

  The five frames 14 (14A to 14E), together with the inner part 11, form five first opening regions R10A to R10E by partitioning a region between the inner part 11 and the outer frame part 12, respectively. Yes. For convenience in illustration, hatching lines that rise to the right shoulder are attached to the portions showing the first opening regions R10A to R10E in FIG. The first opening regions R10A to R10E are arranged in order along the circumferential direction (counterclockwise direction), and surround the inner portion 11 as a whole (see also FIG. 3).

  As shown in FIG. 5, the frame 14 (14A) has an arc shape that is a part of a circular shape AA (center 14AA), and the frame 14 (14B) is an arc that is a part of a circular shape BB (center 14BB). The frame 14 (14C) has an arc shape formed of a part of a circular shape CC (center 14CC), and the frame 14 (14D) has an arc shape formed of a part of a circular shape DD (center 14DD). The frame 14 (14E) has an arc shape formed of a part of a circular shape EE (center 14EE).

  The circular shapes AA to EE may have the same diameter, or may have different diameters. The circular shapes AA to EE may have the same diameter as the inner portion 11 or may have a diameter different from that of the inner portion 11.

  Referring to FIGS. 5 and 6, centers 14AA to 14EE of circular shapes AA to EE (FIG. 5) corresponding to each of a plurality of arc shapes constituting a plurality of frames 14 (14A to 14E). Are provided at different positions. In the present embodiment, the centers 14AA to 14EE of the circular shapes AA to EE (FIG. 5) are located on one spiral curve 14SP starting from the center 11C of the inner portion 11. The spiral curve 14SP is a curve defined by an equation of r = 5 × θ ^ 0.4, for example.

(Linear rib 15)
7 and 8 are front views showing a part of the fan guard 10 (specifically, the inner portion 11, the plurality of frames 14, and the plurality of linear ribs 15). It is a figure for demonstrating the structure of 1 linear rib). For convenience of explanation, the frame 16, the linear rib 17, the linear rib 18, and the outer frame portion 12 are not shown in FIGS. 7 and 8 (see FIG. 3). A portion showing the plurality of linear ribs 15 in FIG.

  The plurality of linear ribs 15 are provided inside each of the plurality of frames 14 (14A to 14E). In other words, the plurality of linear ribs 15 are arranged in each of the first opening regions R10A to R10E, and each of the first opening regions R10A to R10E is partitioned to form a small small window.

  Referring to FIG. 7, regarding the plurality of linear ribs 15 provided inside the frame 14 (14D), the linear ribs 15 (15D1) have an arc shape extending from the position D11 to the position D12. The linear rib 15 (15D2) has an arc shape extending from the position D21 to the position D22, and the linear rib 15 (15D3) has an arc shape extending from the position D31 to the position D32. Yes.

  Similarly, when the plurality of linear ribs 15 provided inside the frame 14 (14E) are viewed, the linear rib 15 (15E1) has an arc shape extending from the position E11 to the position E12, and is linear. The rib 15 (15E2) has an arc shape extending from the position E21 to the position E22, and the linear rib 15 (15E3) has an arc shape extending from the position E31 to the position E32.

  The first opening region R10D formed inside the frame 14 (14D) and the first opening region R10E formed inside the frame 14 (14E) are adjacent to each other. Similarly, the first opening region R10E formed inside the frame 14 (14E) and the first opening region R10A formed inside the frame 14 (14A) are adjacent to each other.

  When viewed with respect to the first opening region R10D (first first opening region) and the first opening region R10E (second first opening region), a plurality of lines defining the first opening region R10D The ribs 15 (15D1 to 15D3) and the plurality of linear ribs 15 (15E1 to 15E3) defining the first opening region R10E are continuous in a bent shape or are not continuous with each other. Is arranged. In the present embodiment, the linear ribs 15 (15D1 to 15D3) and the linear ribs 15 (15E1 to 15E3) are arranged so as not to be continuous with each other.

  The technical significance of “continuous in a bent shape” is as follows. For example, inside the frame 14 (14A), in other words, the linear rib 15 (15A1) is provided in the first opening region R10A. The end A11 of the linear rib 15 (15A1) faces the end (position E22) of the linear rib 15 (15E2) with the frame 14 (14A) interposed therebetween. “Continuously bent” means that the end portions of the linear rib 15 (15A1) and the linear rib 15 (15E2) are arranged so as to face each other. It means that they are not connected by a smooth curve (connected through corners where inflection points appear).

  In the present embodiment, the above-described arrangement relationship with respect to the plurality of linear ribs 15 (specifically, the plurality of first linear ribs defining two adjacent opening regions are continuously bent and bent. Or an arrangement relationship in which they are arranged not to be continuous with each other) holds for all the linear ribs 15 provided in the first opening regions R10A to R10E.

  As shown in FIG. 8, the linear rib 15 (15D1) has an arc shape formed of a part of a circular DR1 (center DR), and the linear rib 15 (15D2) is one of the circular DR2 (center DR). The linear rib 15 (15D3) has an arc shape formed of a part of the circular DR3 (center DR). In other words, the plurality of linear ribs 15 (15D1 to 15D3) arranged in one first opening region R10D are arranged side by side in a concentric manner with the center DR as the center.

  Similarly, the linear rib 15 (15E1) has an arc shape composed of a part of the circular shape ER1 (center ER), and the linear rib 15 (15E2) is an arc composed of a part of the circular shape ER2 (center ER). The linear rib 15 (15E3) has a circular arc shape formed of a part of the circular shape ER3 (center ER). In other words, the plurality of linear ribs 15 (15E1 to 15E3) arranged in one first opening region R10E are also arranged in a concentric manner with the center ER as the center.

  As shown in FIG. 8, preferably, the center position (center DR position) of the concentric circles defining the positions of the plurality of linear ribs 15 (15D1 to 15D3) is different from the position of the center 11C of the inner portion 11. Provided in position. Similarly, the center position (center ER position) of the concentric circles defining the positions of the plurality of linear ribs 15 (15E1 to 15E3) is also provided at a position different from the position of the center 11C of the inner portion 11.

  Preferably, the plurality of linear ribs 15 (15D1 to 15D3) arranged in one first opening region R10D are arranged at equal intervals (for example, 10 mm intervals) in the radial direction of the concentric circles. This is synonymous with the difference in diameter between the circular shape DR1 and the circular shape DR2 being equal to the difference in diameter between the circular shape DR2 and the circular shape DR3. Similarly, the plurality of linear ribs 15 (15E1 to 15E3) arranged in one first opening region R10E are also preferably arranged at equal intervals in the radial direction of the concentric circles.

  In the present embodiment, these arrangement relations regarding the plurality of linear ribs 15 (specifically, the center position of the concentric circles defining the plurality of linear ribs is a position different from the center 11C of the inner portion 11). The arrangement relationship that the plurality of linear ribs are arranged at equal intervals in the radial direction of the concentric circles) is established for all the linear ribs 15 provided in the first opening regions R10A to R10E.

  Referring again to FIG. 7, the plurality of linear ribs 15 in the present embodiment have one end and the other end in the circumferential direction centering on the inner portion 11. For example, the linear rib 15 (15E2) has one end (position E21) and the other end (position E22), and these ends are provided at positions shifted in the circumferential direction. ing. Here, the circumferential direction can be defined as a clockwise direction when the fan guard is viewed from the front, or a counterclockwise direction when the fan guard is viewed from the front. Either one does not matter. The distance between one end (position E21) and the position of the center 11C of the inner part 11 is L1, and the distance between the other end (position E22) and the center 11C of the inner part 11 is L2. In this case, it is preferable that the relationship of L1> L2 is established for all the linear ribs 15.

  In the present embodiment, the circumferential direction referred to here coincides with the rotational direction of the fan (see FIG. 1). Accordingly, when viewing the linear rib 15 (15E2), one end portion (position E21) located on the front side in the fan rotation direction is located on the outer side in the radial direction and located on the rear side in the fan rotation direction. The other end (position E22) is located inside in the radial direction. According to the linear rib 15 having such a configuration, since it has a spiral in the same direction with respect to the swirl component of the sent wind, the wind passing near the linear rib 15 (15E2) is prevented. It becomes possible to diffuse. Contrary to this case, the circumferential direction mentioned here may be opposite to the rotation direction of the fan. In that case, according to the linear rib 15 having the above-described configuration, it has a spiral in a direction to suppress the swirl component of the delivered wind, and the swirl component is reduced and converted to the axial flow component. Thus, the wind passing through the vicinity of the linear rib 15 (15E2) can be converged. Since the relationship of L1> L2 is established for all the linear ribs 15, a large diffusion or convergence effect can be obtained.

(Frame 16)
FIG. 9 and FIG. 10 are front views showing a part of the fan guard 10, and are diagrams for explaining the configuration of a plurality of frames 16 (second frames). The fan guard in the present embodiment has a plurality (six) of frames 16 (16P to 16U). For convenience of explanation, the linear rib 15, the linear rib 17, and the linear rib 18 are not shown in FIG. 9 (see FIG. 3). In FIG. 10, the linear rib 17, the linear rib 18, and the outer frame portion 12 are not illustrated.

  As shown in FIG. 9, the frame 16 (16P) has an arc shape extending from the position P1 to the position P2, and the frame 16 (16Q) has an arc shape extending from the position Q1 to the position Q2. The frame 16 (16R) has an arc shape extending from the position R1 to the position R2, and the frame 16 (16S) has an arc shape extending from the position S1 to the position S2. The frame 16 (16T) has an arc shape extending from the position T1 to the position T2, and the frame 16 (16U) has an arc shape extending from the position U1 to the position U2. .

  Here, five first opening regions R10A to R10E surrounding the inner portion 11 as a whole are defined as one inner region. The inner region is a region obtained by combining the five first opening regions R10A to R10E. The positions P1, P2, Q1, R1, S1, and T1 are located on the outer periphery of the inner region. The position Q2 is located on the frame 16 (16P), the position R2 is located on the frame 16 (16Q), the position S2 is located on the frame 16 (16R), and the position T2 is located on the frame 16 (16S). The positions U1 and U2 are located on the frame 16 (16P) and the frame 16 (16T), respectively.

  The six frames 16 (16P to 16U), together with the inner region (first opening regions R10A to R10E), divide the region between the inner region and the outer frame portion 12, thereby respectively providing six second opening regions. R20P to R20U are formed. For the convenience of illustration, hatching lines that rise to the left are attached to the portions showing the second opening regions R20P to R20U in FIG. The second opening regions R20P to R20U are arranged in order along the circumferential direction (counterclockwise direction), and surround the inner region (first opening regions R10A to R10E) as a whole (see FIG. 3). See also).

  As shown in FIG. 10, the frame 16 (16P) has another arc shape formed of a part of another circular shape PP, and the frame 16 (16Q) is formed from a part of the other circular shape QQ. The frame 16 (16R) has another arc shape formed of a part of the other circular shape RR, and the frame 16 (16S) has another circular shape SS. The frame 16 (16T) has another arc shape consisting of a part of another circular shape TT, and the frame 16 (16U) has another arc shape. It has another circular arc shape which consists of a part of the circular shape UU.

  Other circular shapes PP to UU have centers 16PP to 16UU, respectively. The other circular PP to UU may have the same diameter or may have different diameters. The other circular shapes PP to UU may have the same diameter as the circular shapes AA to EE and the inner portion 11, or may have a different diameter from the inner portion 11. In the present embodiment, the centers 16PP to 16UU of other circular shapes PP to UU corresponding to each of a plurality of other arc shapes constituting the plurality of frames 16 (16P to 16U) are different from each other. In the position.

(Linear rib 17)
11 and 12 are front views showing a part of the fan guard 10 (specifically, the inner portion 11, the plurality of frames 14, the plurality of frames 16, and the plurality of linear ribs 17). It is a figure for demonstrating the structure of the linear rib 17 (2nd linear rib). For convenience of explanation, the linear rib 15, the linear rib 18, and the outer frame portion 12 are not shown in FIGS. 11 and 12 (see FIG. 3). A portion indicating the plurality of linear ribs 17 in FIG. 11 is provided with a hatching line that rises to the left.

  The plurality of linear ribs 17 are provided inside each of the plurality of frames 16 (16P to 16U). In other words, the plurality of linear ribs 17 are arranged in each of the second opening regions R20P to R20U, and each of the second opening regions R20P to R20U is partitioned to form a small small window.

  Referring to FIG. 11, when the plurality of linear ribs 17 provided inside the frame 16 (16T) are viewed, the linear ribs 17 (17T1) have an arc shape extending from the position T11 to the position T12. The linear rib 17 (17T2) has an arc shape extending from the position T21 to the position T22, and the linear rib 17 (17T3) has an arc shape extending from the position T31 to the position T32. The linear rib 17 (17T4) has an arc shape extending from the position T41 to the position T42.

  Similarly, when viewing the plurality of linear ribs 17 provided inside the frame 16 (16U), the linear ribs 17 (17U1) have an arc shape extending from the position U11 to the position U12, and are linear. The rib 17 (17U2) has an arc shape extending from the position U21 to the position U22, and the linear rib 17 (17U3) has an arc shape extending from the position U31 to the position U32, and the linear rib 17 (17U4) has an arc shape extending from the position U41 to the position U42.

  The second opening region R20T formed inside the frame 16 (16T) and the second opening region R20U formed inside the frame 16 (16U) are adjacent to each other. When the second opening region R20T and the second opening region R20U are viewed, a plurality of linear ribs 17 (17T1 to 17T4) partitioning the second opening region R20T and the second opening region R20U are partitioned. The plurality of linear ribs 17 (17U1 to 17U4) are continuous so as to be bent or arranged so as not to be continuous with each other. In the case of the present embodiment, the linear rib 17 (17T1 to 17T4) and the linear rib 17 (17U1 to 17U4) are arranged so as not to be continuous with each other.

  Inside the frame 16 (16P), in other words, the linear rib 17 (17P1) is provided in the second opening region R20P. The end P11 of the linear rib 17 (17P1) is located near the end (position U32) of the linear rib 17 (17U3), but these ends are not connected by a smooth curve.

  In the present embodiment, the above-described arrangement relationship with respect to the plurality of linear ribs 17 (specifically, the plurality of second linear ribs defining two adjacent opening regions are continuously bent and bent. Or an arrangement relationship in which they are arranged not to be continuous with each other) holds for all the linear ribs 17 provided in the second opening regions R20P to R20U.

  As shown in FIG. 12, the linear rib 17 (17T1) has another arc shape formed of a part of the circular shape TR1, and the linear rib 17 (17T2) is formed of a part of the circular shape TR2. The linear rib 17 (17T3) has another circular arc shape formed of a part of the circular shape TR3, and the linear rib 17 (17T4) has the circular shape TR4. It has the other circular arc shape which consists of a part of. The circular shapes TR1 to TR4 have a common center TR. In other words, the plurality of linear ribs 17 (17T1 to 17T4) arranged in one second opening region R20T are arranged side by side in a concentric circle centered on the center TR.

  Similarly, the linear rib 17 (17U1) has another arc shape made of a part of the circular shape UR1, and the linear rib 17 (17U2) has another arc shape made of a part of the circular shape UR2. The linear rib 17 (17U3) has another arc shape formed of a part of the circular UR3, and the linear rib 17 (17U4) is formed of a part of the circular UR4. It has another arc shape. The circular shapes UR1 to UR4 have a common center UR. In other words, the plurality of linear ribs 17 (17U1 to 17U4) arranged in one second opening region R20U are also arranged in a concentric manner with the center UR as the center.

  Preferably, the center position (center TR position) of the concentric circles defining the positions of the plurality of linear ribs 17 (17T1 to 17T4) is provided at a position different from the position of the center 11C of the inner portion 11. Similarly, the center position (center UR position) of the concentric circles defining the positions of the plurality of linear ribs 17 (17U1 to 17U4) is also provided at a position different from the position of the center 11C of the inner portion 11.

  Preferably, the plurality of linear ribs 17 (17T1 to 17T4) arranged in one second opening region R20T are arranged at equal intervals in the radial direction of the concentric circles. This is synonymous with the difference in diameter between the circular shape TR1 and the circular shape TR2, the difference in diameter between the circular shape TR2 and the circular shape TR3, and the difference in diameter between the circular shape TR3 and the circular shape TR4. is there. Similarly, the plurality of linear ribs 17 (17U1 to 17U4) arranged in one second opening region R20U are also arranged at equal intervals in the radial direction of the concentric circles.

  In the present embodiment, these arrangement relations regarding the plurality of linear ribs 17 (specifically, the center position of concentric circles defining the plurality of linear ribs is a position different from the center 11C of the inner portion 11). The arrangement relationship that the plurality of linear ribs are arranged at equal intervals in the radial direction of the concentric circles) is established for all the linear ribs 17 provided in the second opening regions R20P to R20U.

  Referring again to FIG. 11, the plurality of linear ribs 17 in the present embodiment have one end and the other end in the circumferential direction centering on the inner portion 11. For example, the linear rib 17 (17T2) has one end (position T21) and the other end (position T22), and these ends are provided at positions shifted in the circumferential direction. ing. Here, the circumferential direction can be defined as a clockwise direction when the fan guard is viewed from the front, or a counterclockwise direction when the fan guard is viewed from the front. Either one does not matter. The distance between one end (position T21) and the position of the center 11C of the inner part 11 is L3, and the distance between the other end (position T22) and the center 11C of the inner part 11 is L4. In this case, it is preferable that the relationship L3> L4 is established for all the linear ribs 17.

  In the present embodiment, the circumferential direction referred to here coincides with the rotational direction of the fan (see FIG. 1). Therefore, when viewing the linear rib 17 (17T2), one end portion (position T21) located on the front side in the fan rotation direction is located on the outer side in the radial direction and located on the rear side in the fan rotation direction. The other end (position T22) is located inside in the radial direction. According to the linear rib 17 having such a configuration, it is possible to diffuse the wind passing through the vicinity of the linear rib 17 (17T2). Contrary to this case, the circumferential direction mentioned here may be opposite to the rotation direction of the fan. In that case, according to the linear rib 17 having the above-described configuration, it is possible to converge the wind passing through the vicinity of the linear rib 17 (17T2). Since the relationship of L3> L4 is established for all the linear ribs 17, a large diffusion or convergence effect can be obtained.

  Referring to FIG. 13, in the present embodiment, a plurality of linear ribs 15 provided in first opening regions R10A to R10E and a plurality of lines provided in second opening regions R20P to R20U. The ribs 17 are also arranged so as to be bent, or arranged so as not to be mutually continuous. For example, at the location indicated by the dotted line PE in FIG. 13, the end of the linear rib 15 (15C3) faces the end of the linear rib 17 (17S1) with the frame 14 (14C) interposed therebetween. However, these end portions are not connected by a smooth curve (connected through a corner portion). In the present embodiment, the above-described arrangement relationship regarding the plurality of linear ribs 15 and 17 is established for all the linear ribs 15 and 17.

(Linear rib 18)
14 and 15 are front views showing a part of the fan guard 10, and are diagrams for explaining the configuration of the plurality of linear ribs 18 (third linear ribs). For convenience of explanation, the linear rib 15 and the linear rib 17 are not shown in FIG. 14 (see FIG. 3). In FIG. 15, the inner part 11, the frame 14, the linear rib 15, the frame 16, and the linear rib 17 are not shown (see FIG. 3). In FIG. 14, a portion indicating the plurality of linear ribs 18 is provided with a hatching line that rises to the left.

  As described above, the five first opening regions R10A to R10E that surround the inner portion 11 in an annular shape as a whole can be defined as one inner region. The inner region is a region obtained by combining the five first opening regions R10A to R10E. Here, the six second opening regions R20P to R20U surrounding the inner region in a ring shape as a whole can be defined as one intermediate region. The intermediate region is a region obtained by combining six second opening regions R20P to R20U. The plurality of linear ribs 18 are disposed between the intermediate region and the outer frame portion 12.

  One end of the linear rib 18 (for example, end 18T in FIG. 14) is located on the outer frame portion 12, and the other end of the linear rib 18 (for example, end 18U in FIG. 14). ) Is located on the outer periphery of this intermediate region.

  As shown in FIG. 15, the linear rib 18 (18A) has an arc shape formed of a part of a circular shape 18R1, and the linear rib 18 (18B) is an arc formed of a part of a circular shape 18R2. The linear rib 18 (18C) has a circular arc shape formed from a part of the circular shape 18R3. The circular shapes 18R1 to 18R3 have centers 18AA to 18CC, respectively, and have the same diameter.

  The plurality of linear ribs 18 are arranged so as to have rotational symmetry about the position of the center 11C of the inner portion 11. The rotational symmetry mentioned here means the property that the same figure is repeated when the linear rib 18 is rotated around the center 11C of the inner portion 11 at a predetermined angle θ. These features are satisfied by all the linear ribs 18.

  Referring again to FIG. 14, the plurality of linear ribs 18 in the present embodiment have one end and the other end in the circumferential direction centering on the inner portion 11. One end 18T of the linear rib 18 and the other end 18U are provided at positions shifted in the circumferential direction. Here, the circumferential direction can be defined as a clockwise direction when the fan guard is viewed from the front, or a counterclockwise direction when the fan guard is viewed from the front. Either one does not matter. When the distance between one end 18T and the position of the center 11C of the inner part 11 is L5, and the distance between the other end 18U and the position of the center 11C of the inner part 11 is L6, It is preferable that the relationship of L5> L6 is established for the linear rib 18.

  In the present embodiment, the circumferential direction referred to here coincides with the rotational direction of the fan (see FIG. 1). Therefore, one end 18T located on the front side in the rotation direction of the fan is located on the outer side in the radial direction, and the other end 18U located on the rear side in the rotation direction of the fan is located on the inner side in the radial direction. According to the linear rib 18 having such a configuration, it is possible to diffuse the wind passing through the vicinity of the linear rib 18. Contrary to this case, the circumferential direction mentioned here may be opposite to the rotation direction of the fan. In that case, according to the linear rib 18 having the above-described configuration, it is possible to converge the wind passing through the vicinity of the linear rib 18. Since the relationship of L5> L6 is established for all the linear ribs 18, a large diffusion or convergence effect can be obtained.

(Function and effect)
In the fan guard 10 having the above-described configuration, a plurality of linear ribs 15 (first linear ribs) that define two adjacent first opening regions among the first opening regions R10A to R10E. , Are arranged in such a way that they are bent or are arranged not to be continuous with each other. According to this configuration, the direction of the air flow blown through each of the first opening regions R10A to R10E is defined by the linear ribs 15 in different directions. The direction of the airflow blown out through each of the first opening regions R10A to R10E depends on the rotation direction of the fan 30 and the position, shape (tilt), and size of the linear ribs 15, and a plurality of first opening regions R10A. It is set to a desired value for each R10E. About these effects, it is the same also about the some linear rib 17 provided in 2nd opening area | region R20P-R20U. The diffusion / convergence can be adjusted by changing the inclination of each rib. If you want to increase the degree of diffusion, set the ribs in a direction that lays down more. If you want to increase the degree of convergence, set the direction to raise the ribs. Good.

  Here, a new usage of the fan is described. Conventionally, an electric fan has been used alone in the summer, and blows wind to the user to give a cool feeling. It has been required to converge a large amount of wind and high wind speed and blow it to the user. Later, in the summer, air conditioners were used alone instead of electric fans, and electric fans were used supplementarily in early summer or autumn when it was not hot enough to use air conditioners. However, after these changes, the specifications required for the electric fan were the same as the old ones. In recent years, air conditioners and electric fans are often used in combination in the summer from the viewpoint of global environmental conservation and energy saving. By using an air conditioner and a fan together, it is possible to eliminate unevenness in the temperature in the room. By lowering the sensible temperature by the wind from the electric fan, the set temperature of the air conditioner can be set weaker. However, since the temperature of the air blown out from the air conditioner is low, if a conventional fan is used to converge a large air volume and high wind speed and blow it to the user, the body temperature will drop more than necessary and comfort will be reduced. There are concerns. Therefore, in recent years, there has been a desire to create a gentle wind by converging a large amount of wind instead of converging it. By applying the idea disclosed in the present embodiment to the fan guard, the direction of the airflow blown out through the first opening region can be set for each of the plurality of first opening regions. It can be said that it can respond to such requests.

  As described above, in the fan guard 10, each of the plurality of frames 14 has an arc shape formed of a part of the circular shapes AA to EE (FIG. 5), and the plurality of frames constituting the plurality of frames 14. The centers 14AA to 14EE of the circular shapes AA to EE (FIG. 5) corresponding to each of the arc shapes are provided at different positions. Circular centers 14AA to 14EE corresponding to each of the plurality of arc shapes constituting the plurality of frames 14 are located on one spiral curve 14SP (FIG. 6). According to these technical ideas, since the shapes of the plurality of first opening regions are not the same (since the randomness of the shape is increased), it is possible to suppress the interference sound with the fan (particularly the NZ sound). For example, like the fan guard 10 in the present embodiment, it is possible to draw a flower shape with the inner portion 11 and the plurality of frames 14, and a commercial effect can be expected. About these effects, it is the same also about the some flame | frame 16 provided in the outer periphery of the some flame | frame 14. FIG.

  As described above, in the fan guard 10, the plurality of linear ribs 15 arranged in one first opening region are arranged concentrically. The center position of the concentric circles defining the positions of the plurality of linear ribs 15 is a position different from the center position of the inner portion 11. The plurality of linear ribs 15 arranged in one first opening region are arranged at equal intervals in the radial direction of the concentric circles. According to these technical ideas, it is possible to ensure an appropriate opening shape for air blowing, which is substantially the same in opening area as a whole, and according to the linear ribs 15 arranged geometrically and orderly, It can also be expected to give more beauty to the user of the fan guard 10 (blower device 100). About these effects, it is the same also about the some linear rib 18 provided in the outer periphery of the some flame | frame 16. As shown in FIG.

  Referring to FIG. 16, blower device 100 (FIGS. 1 and 2) of the present embodiment has rear edge portion in a state where rear edge portion 30 </ b> E of fan 30 and guard portion 13 of fan guard 10 face each other. When 30E is projected in the axial direction toward the front side, the projected image of the rear edge portion 30E also has a feature that it intersects only a part of the guard portion 13 of the fan guard 10. Even if the fan 30 rotates, the projected image of the rear edge 30E of the fan 30 does not exactly overlap with a part (arbitrary part) of the guard part 13, and always intersects only a part of the guard part 13. . According to the said structure, since the generation | occurrence | production of the interference sound (wind noise) which may be produced when the rear edge part 30E of the fan 30 passes a part of guard part 13 is suppressed, the noise accompanying operation | movement of the air blower 100 is suppressed. Can be small.

  In addition to the above configuration, when the guard part 13 of the fan guard 10 is projected in the axial direction toward the back side of the fan 30 (see FIG. 1), the projected image of the guard part 13 is the back side of the fan 30. It is preferable to have a portion that overlaps the guard portion of the rear-side fan guard 20 that is disposed on the front side. It is preferable that the part overlapping the guard part (the part where the projected image of the fan guard 10 and the shape of the rear fan guard 20 coincide) is as large as possible. The air flow taken in through the back side fan guard 20 can be smoothly blown out of the fan guard 10 through the fan 30 as it is. The pressure loss is reduced, and the air volume can be increased. Further, the design complexity when the blower 100 is viewed from the front side is reduced, and the aesthetics can be enhanced.

[Embodiment 2]
With reference to FIG. 17, the fan guard 10A in Embodiment 2 is demonstrated. In the fan guard 10A, the circular shapes AA to EE corresponding to each of the plurality of arc shapes constituting the plurality of frames 14 (14A to 14E) are 1 starting from the center 11C of the inner portion 11. The two spiral curves 14SP are arranged so as to be inscribed.

  Although not shown in FIG. 17, the configurations of the linear rib 15, the frame 16, the linear rib 17 and the linear rib 18 in the fan guard 10A can be the same as those in the first embodiment. Also by this technical idea, it becomes possible to draw a flower shape by the inner portion 11 and the plurality of frames 14, and a commercial effect can be expected.

[Embodiment 3]
With reference to FIG. 18, the fan guard 10B in Embodiment 3 is demonstrated. The fan guard 10B is different from the fan guard 10 (FIG. 3) of the first embodiment in the shape of the linear rib 18. The plurality of linear ribs 18 have a shape that curves in the opposite direction to that of the fan guard 10 of the first embodiment.

  In the fan guard 10 of the first embodiment, the airflow passing near the linear ribs 15 in the first opening regions R10A to R10E, and the vicinity of the linear ribs 17 in the second opening regions R20P to R20U. Both the airflow and the airflow passing in the vicinity of the linear rib 18 form one of diffusion and convergence. As described above, whether each rib exhibits the diffusion function or the convergence function is defined according to the rotation direction of the fan 30 (FIG. 1) applied to the fan guard.

  On the other hand, in fan guard 10B of the present embodiment, airflow passing near linear ribs 15 in first opening regions R10A to R10E, and linear ribs 17 in second opening regions R20P to R20U. The airflow passing through the vicinity forms one of diffusion and convergence depending on the rotation direction of the fan 30. The airflow passing in the vicinity of the linear rib 18 forms the other of diffusion and convergence according to the rotation direction of the fan 30. The direction of the airflow blown out through each region is set to a desired value for each region according to the rotation direction of the fan 30 and the positions, shapes, and sizes of the linear ribs 15, 17, 18. Become.

[Embodiment 4]
With reference to FIG. 19, the fan guard 10C in Embodiment 4 is demonstrated. The fan guard 10C is different from the fan guard 10 (FIG. 3) of the first embodiment in the shape of the linear ribs 18. The plurality of linear ribs 18 are arranged radially about the position of the center 11C of the inner portion 11.

  Also in the fan guard 10C of the fourth embodiment, the airflow passing near the linear ribs 15 in the first opening regions R10A to R10E and the vicinity of the linear ribs 17 in the second opening regions R20P to R20U are detected. The passing airflow forms one of diffusion and convergence depending on the rotation direction of the fan 30. The airflow passing in the vicinity of the linear rib 18 forms the other of diffusion and convergence according to the rotation direction of the fan 30. The direction of the airflow blown out through each region is set to a desired value for each region according to the rotation direction of the fan 30 and the positions, shapes, and sizes of the linear ribs 15, 17, 18. Become.

[Embodiment 5]
With reference to FIG. 20, the fan guard 10D in Embodiment 5 is demonstrated. The guard part 13 of the fan guard 10D includes the frame 14, the linear ribs 15 and the linear ribs 18, but does not have the frame 16 and the linear ribs 17 unlike the first to fourth embodiments. . First opening regions R10A to R10E are formed inside the five frames 14 having an arc shape, respectively.

  1st opening area | region R10A-R10E is located in a line along the circumferential direction (counterclockwise direction) in order, and surrounds the circumference | surroundings of the inner side part 11 cyclically | annularly as a whole. A plurality of linear ribs 15 (first linear ribs) that define two adjacent first opening regions among the first opening regions R10A to R10E are continuous in a bent shape, or They are arranged not to be continuous with each other. Even with the fan guard 10D, it is possible to obtain substantially the same operations and effects as in the above-described embodiments.

[Embodiment 6]
With reference to FIG. 21, the fan guard 10E in Embodiment 6 is demonstrated. The guard part 13 of the fan guard 10E also includes the frame 14, the linear ribs 15 and the linear ribs 18, but unlike the first to fourth embodiments, does not have the frame 16 and the linear ribs 17. . The four frames 14 having an arc shape do not overlap each other, have the same shape (rotationally symmetric shape), and are disposed so as to be adjacent to each other at the end portions. First opening regions R10A to R10D are formed inside the four frames 14, respectively. The fan guard 10E can also provide substantially the same operations and effects as the above-described embodiments.

[Embodiment 7]
With reference to FIG. 22, the fan guard 10F in Embodiment 7 is demonstrated. Also in the fan guard 10F, a plurality of linear ribs 15 (first linear ribs) defining two adjacent first opening regions among the first opening regions R10A to R10F are bent. They are arranged so as to be continuous or not continuous with each other.

  The plurality of linear ribs 15 provided inside each of the first opening regions R10A, R10C, R10E and the plurality of linear ribs 15 provided inside each of the first opening regions R10B, R10D, R10F The effect exerted on the airflow is different. When the plurality of linear ribs 15 provided inside each of the first opening regions R10A, R10C, and R10E exhibit the airflow diffusing function according to the rotation direction of the fan 30 (FIG. 1), the first The plurality of linear ribs 15 provided inside each of the opening regions R10B, R10D, and R10F exhibit an airflow convergence function.

  Also with the fan guard 10F, the direction of the airflow blown through each of the first opening regions R10A to R10F depends on the rotation direction of the fan 30 and the position, shape, and size of the linear rib 15. A desired value is set for each of the opening regions R10A to R10F.

[Embodiment 8]
With reference to FIG. 23, the fan guard 10G in Embodiment 8 is demonstrated. The fan guard 10G has a shape in which a plurality of frames 14 are bent, and the first opening regions R10A to R10F have a substantially pentagonal shape. A plurality of linear ribs 15 (first linear ribs) that define two adjacent first opening regions among the first opening regions R10A to R10F are continuous in a bent shape, or They are arranged not to be continuous with each other. The fan guard 10G can also provide substantially the same operations and effects as the above-described embodiments.

[Embodiment 9]
With reference to FIG. 24, the fan guard 10H in the ninth embodiment will be described. The fan guard 10H is different from the fan guard 10D (FIG. 20) of the fifth embodiment in the shape of the linear rib 18. The plurality of linear ribs 18 have a shape that curves in the opposite direction to that of the fan guard 10D of the fifth embodiment.

  In the fan guard 10 </ b> H, the airflow passing near the linear ribs 15 in the first opening regions R <b> 10 </ b> A to R <b> 10 </ b> E forms one of diffusion and convergence depending on the rotation direction of the fan 30. The airflow passing in the vicinity of the linear rib 18 forms the other of diffusion and convergence according to the rotation direction of the fan 30. The direction of the airflow blown out through each region is set to a desired value for each region according to the rotation direction of the fan 30 and the positions, shapes, and sizes of the linear ribs 15, 17, 18. Become.

[Embodiment 10]
With reference to FIG. 25, the fan guard 10I in the tenth embodiment will be described. Fan guard 10I is different from fan guard 10D (FIG. 20) of the fifth embodiment in the shape of linear rib 18. The plurality of linear ribs 18 are arranged radially about the position of the center 11C of the inner portion 11.

  Also in the fan guard 10I, the airflow passing through the vicinity of the linear ribs 15 in the first opening regions R10A to R10E forms one of diffusion and convergence according to the rotation direction of the fan 30. The airflow passing in the vicinity of the linear rib 18 forms the other of diffusion and convergence according to the rotation direction of the fan 30. The direction of the airflow blown out through each region is set to a desired value for each region according to the rotation direction of the fan 30 and the positions, shapes, and sizes of the linear ribs 15, 17, 18. Become.

[Embodiment 11]
With reference to FIGS. 26-30, the fan guard 10J in Embodiment 11 is demonstrated. FIG. 26 is a front view showing the fan guard 10J. A fan guard 10 </ b> J for guarding the fan 30 (FIG. 1) includes an inner portion 11, an outer frame portion 12, and a guard portion 13. The guard portion 13 in the present embodiment includes a plurality of frames 14M and 14N and a plurality of linear ribs 15M and 15N.

(Frame 14M, 14N)
FIG. 27 and FIG. 28 are front views showing a part of the fan guard 10J, and are diagrams for explaining the configuration of the plurality of frames 14M and 14N. For convenience of explanation, the plurality of linear ribs 15M and 15N are not shown in FIGS. 27 and 28 (see FIG. 26).

  The plurality of frames 14M and 14N are members that function as the first frame, and are alternately arranged around the inner portion 11. One end portions of the plurality of frames 14M and 14N are located on the outer periphery of the inner portion 11, and the other end portions of the plurality of frames 14M and 14N are located on the outer frame portion 12.

  As shown in FIG. 27, the plurality of frames 14M and 14N form a total of 14 first opening regions R10A to R10N by partitioning a region between the inner portion 11 and the outer frame portion 12. For convenience of illustration, hatching lines are attached to the portions showing the first opening regions R10A to R10N in FIG. The first opening regions R10A to R10N are arranged in order along the circumferential direction (counterclockwise direction), and surround the inner portion 11 as a whole (see also FIG. 26).

  Although details will be described later, in FIG. 27, a plurality of linear ribs 15M are provided in the first opening regions R10A, R10C, R10E, R10G, R10I, R10K, and R10M shown by hatching that rises to the left. (See FIG. 26). In FIG. 27, a plurality of linear ribs 15N are provided in the first opening regions R10B, R10D, R10F, R10H, R10J, R10L, and R10N indicated by hatching that rises to the right. In the present embodiment, the first opening regions where the plurality of linear ribs 15M are provided and the first opening regions where the plurality of linear ribs 15N are provided are alternately arranged in the circumferential direction.

  As shown in FIG. 28, the frame 14N (14N1) has an arc shape formed of a part of a circular shape 14R1, and the frame 14M (14M1) has an arc shape formed of a part of a circular shape 14R2. The frame 14N (14N2) has an arc shape formed of a part of the circular shape 14R3, and the frame 14M (14M2) has an arc shape formed of a part of the circular shape 14R4.

  The circular shapes 14R1 to 14R4 have centers 14RA to 14RD, respectively, and have the same diameter. The centers (14RA-14RD, etc.) of the circular shapes (circular shapes 14R1-14R4, etc.) corresponding to each of the plurality of arc shapes constituting the frames 14M, 14N are provided at different positions. Yes.

  The plurality of frames 14M and 14N in the present embodiment are arranged so as to have rotational symmetry about the position of the center 11C of the inner portion 11. When the frames 14M and 14N are rotated at a predetermined angle around the center 11C of the inner portion 11, the same figure is repeated. These features are satisfied by all frames 14M and 14N.

(Linear ribs 15M, 15N)
29 and 30 are front views showing a part of the fan guard 10J, and are diagrams for explaining the configuration of the plurality of linear ribs 15M and 15N (first linear ribs). As described above, the plurality of linear ribs 15M are provided in the first opening regions R10A, R10C, R10E, R10G, R10I, R10K, and R10M (see FIG. 26). The plurality of linear ribs 15M partition each of these first opening regions to form small windows. On the other hand, a plurality of linear ribs 15N are provided in the first opening regions R10B, R10D, R10F, R10H, R10J, R10L, and R10N (see FIG. 26). The plurality of linear ribs 15N also define small windows by dividing each of the first opening regions.

  Referring to FIG. 29, the first opening region R10B and the first opening region R10C are adjacent to each other. Looking at the linear rib 15M (15MS) provided in the first opening region R10B, the linear rib 15 (15MS) has an arc shape extending from the position 15MT to the position 15MU. Looking at the linear rib 15N (15NS) provided in the first opening region R10C, the linear rib 15 (15NS) has an arc shape extending from the position 15NT to the position 15NU.

  When viewed with respect to the first opening region R10B (first first opening region) and the first opening region R10C (second first opening region), a plurality of lines defining the first opening region R10B The ribs 15M and the plurality of linear ribs 15N that define the first opening region R10C are all continuous in a bent shape or arranged so as not to be continuous with each other.

  In the present embodiment, the above-described arrangement relationship regarding the plurality of linear ribs 15M and 15N (specifically, the plurality of first linear ribs defining two adjacent opening regions are bent). The arrangement relationship that the arrangement is continuous or discontinuous with each other) holds for all the linear ribs 15M and 15N provided in the first opening regions R10A to R10N.

  As shown in FIG. 30, each of the plurality of linear ribs 15M arranged in one first opening region R10B has an arc shape formed of a part of circular shapes MR1 to MR7 (center MR). Yes. That is, the plurality of linear ribs 15M arranged in the first opening region R10B are arranged in a concentric manner with the center MR as the center.

  Similarly, each of the plurality of linear ribs 15N arranged in one first opening region R10C has an arc shape formed of a part of circular shapes NR1 to NR8 (center NR). That is, the plurality of linear ribs 15N arranged in the first opening region R10C are arranged in a concentric manner with the center NR as the center.

  Preferably, the center position (center MR position) of the concentric circles defining the positions of the plurality of linear ribs 15M is provided at a position different from the position of the center 11C of the inner portion 11. Similarly, the center position (center NR position) of the concentric circles defining the positions of the plurality of linear ribs 15N is also provided at a position different from the position of the center 11C of the inner portion 11.

  Preferably, the plurality of linear ribs 15M arranged in one first opening region R10B are arranged at equal intervals in the radial direction of the concentric circles. This is because the diameter difference between the circular shapes MR1, MR2, the diameter difference between the circular shapes MR2, MR3, the diameter difference between the circular shapes MR3, MR4, the diameter difference between the circular shapes MR4, MR5, the circular shapes MR5, MR6, and the circular shape MR6. It is synonymous with the equal diameter difference of MR7. Similarly, the plurality of linear ribs 15N arranged in one first opening region R10C are also preferably arranged at equal intervals in the radial direction of the concentric circles.

  In the present embodiment, these arrangement relations regarding the plurality of linear ribs 15M and 15N (the center position of the concentric circles defining the plurality of linear ribs is a position different from the center 11C of the inner portion 11, The arrangement relationship in which the linear ribs are arranged at equal intervals in the radial direction of the concentric circles) is established for all the linear ribs 15M and 15N provided in the first opening regions R10A to R10N.

  Referring again to FIG. 29, the plurality of linear ribs 15 </ b> M in the present embodiment has one end and the other end in the circumferential direction centering on the inner portion 11. For example, the linear rib 15M (15MS) has one end (position 15MT) and the other end (position 15MU), and these ends are provided at positions shifted in the circumferential direction. ing. Here, the circumferential direction can be defined as a clockwise direction when the fan guard is viewed from the front, or a counterclockwise direction when the fan guard is viewed from the front. Either one does not matter. The distance between one end (position 15MT) and the position of the center 11C of the inner part 11 is L7, and the distance between the other end (position 15MU) and the position of the center 11C of the inner part 11 is L8. In this case, it is preferable that the relationship of L7> L8 (LA> LB) is established for all the linear ribs 15M.

  On the other hand, the plurality of linear ribs 15N in the present embodiment have one end and the other end in the circumferential direction centering on the inner portion 11. For example, the linear rib 15N (15NS) has one end (position 15NT) and the other end (position 15NU), and these ends are provided at positions shifted in the circumferential direction. ing. Here, the circumferential direction can be defined as a clockwise direction when the fan guard is viewed from the front, or a counterclockwise direction when the fan guard is viewed from the front. Either one does not matter. The distance between one end (position 15NT) and the position of the center 11C of the inner part 11 is L9, and the distance between the other end (position 15NU) and the center 11C of the inner part 11 is L10. In this case, it is preferable that the relationship of L10> L9 (LB> LA) is satisfied for all the linear ribs 15N.

  In summary, in the present embodiment, the distance between one end of each of the linear ribs 15MS and 15NS and the center position of the inner portion 11 is LA, and the other of the linear ribs 15MS and 15NS). When the distance between the end of the inner portion 11 and the center position of the inner portion 11 is LB, a first opening region in which a plurality of linear ribs having a relationship of LA> LB are provided on the inner side, and LB> LA The 1st opening area | region in which the several linear rib which has a relationship was provided inside is located in a line in the circumferential direction alternately. Thereby, the structure that the linear rib which exhibits a spreading | diffusion effect, and the linear rib which exhibits a convergence effect are located in a line in the circumferential direction is realizable.

(Function and effect)
Even in the fan guard 10J having the above-described configuration, the plurality of linear ribs 15M and 15N that define two adjacent first opening regions among the first opening regions R10A to R10N are bent. They are either continuous in shape or arranged so as not to be continuous with each other. According to this configuration, the direction of the airflow blown through each of the first opening regions R10A to R10N is defined in different directions by the linear ribs 15M and 15N. The direction of the airflow blown through each of the first opening regions R10A to R10N depends on the rotation direction of the fan 30 and the positions, shapes, and sizes of the linear ribs 15M and 15N. A desired value is set for each R10N.

[Embodiment 12]
With reference to FIGS. 31 to 34, fan guard 10K in the twelfth embodiment will be described. FIG. 31 is a front view showing the fan guard 10K. Similar to fan guard 10J (FIG. 26) in the eleventh embodiment, fan guard 10K includes inner portion 11, outer frame portion 12, and guard portion 13. The guard portion 13 in the present embodiment includes a plurality of frames 14 and a plurality of linear ribs 15M and 15N.

(Frame 14)
FIG. 32 is a front view showing a part of the fan guard 10J, and is a view for explaining the configuration of the plurality of frames 14M and 14N. For convenience of explanation, a plurality of linear ribs 15M and 15N are not shown in FIG. 32 (see FIG. 31). The plurality of frames 14 (first frames) have a shape extending radially around the inner portion 11 and are arranged at an interval of 30 ° in the circumferential direction.

  The plurality of frames 14 divide a region between the inner portion 11 and the outer frame portion 12 to form a total of 12 first opening regions R10A to R10L. For convenience in illustration, hatching lines are attached to the portions showing the first opening regions R10A to R10L in FIG. The first opening regions R10A to R10L are arranged in order along the circumferential direction (counterclockwise direction), and surround the inner portion 11 as a whole (see also FIG. 31).

(Linear ribs 15M, 15N)
In FIG. 32, a plurality of linear ribs 15M are provided in the first opening regions R10B, R10C, R10H, and R10I indicated by hatching that rises to the left (see FIG. 31). In FIG. 32, a plurality of linear ribs 15N are provided in the first opening regions R10A, R10D, R10E, R10F, R10G, R10J, R10K, and R10L indicated by hatching that rises to the right. In the present embodiment, the first opening regions where the plurality of linear ribs 15M are provided and the first opening regions where the plurality of linear ribs 15N are provided are not alternately arranged in the circumferential direction.

  FIG. 33 is a front view showing a part of the fan guard 10K, and is a view for explaining the configuration of a plurality of linear ribs 15M and 15N (first linear ribs). The first opening region R10C and the first opening region R10D are adjacent to each other. Looking at the linear rib 15M (15MS) provided in the first opening region R10C, the linear rib 15 (15MS) has an arc shape extending from the position 15MT to the position 15MU. Looking at the linear rib 15N (15NS) provided in the first opening region R10D, the linear rib 15 (15NS) has an arc shape extending from the position 15NT to the position 15NU.

  When viewed with respect to the first opening region R10C (first first opening region) and the first opening region R10D (second first opening region), a plurality of lines defining the first opening region R10C The ribs 15M and the plurality of linear ribs 15N that define the first opening region R10D are all continuous in a bent shape or arranged so as not to be continuous with each other.

  In the present embodiment, the above-described arrangement relationship regarding the plurality of linear ribs 15M and 15N (specifically, the plurality of first linear ribs defining two adjacent opening regions are bent). The arrangement relationship that the arrangement is continuous or discontinuous with each other) is established for all the linear ribs 15M and 15N provided in the first opening regions R10A to R10L.

  As shown in FIG. 34, each of the plurality of linear ribs 15M arranged in one first opening region R10C has an arc shape formed of a part of circular shapes MR1 to MR8 (center MR). Yes. That is, the plurality of linear ribs 15 </ b> M arranged in the first opening region R <b> 10 </ b> C are arranged side by side concentrically with the center MR as the center.

  Similarly, each of the plurality of linear ribs 15N arranged in one first opening region R10D has an arc shape formed of a part of circular shapes NR1 to NR8 (center NR). That is, the plurality of linear ribs 15N arranged in the first opening region R10D are arranged in a concentric manner with the center NR as the center.

  Preferably, the center position (center MR position) of the concentric circles defining the positions of the plurality of linear ribs 15M is provided at a position different from the position of the center 11C of the inner portion 11. Similarly, the center position (center NR position) of the concentric circles defining the positions of the plurality of linear ribs 15N is also provided at a position different from the position of the center 11C of the inner portion 11.

  Preferably, the plurality of linear ribs 15M arranged in one first opening region R10C are arranged at equal intervals in the radial direction of the concentric circles. This is because the diameter difference between the circular shapes MR1 and MR2, the diameter difference between the circular shapes MR2 and MR3, the diameter difference between the circular shapes MR3 and MR4, the diameter difference between the circular shapes MR4 and MR5, the circular shapes MR5 and MR6, and the circular shapes MR6 and MR7. Is equivalent to the difference in diameter between the circular shapes MR7 and MR8. Similarly, the plurality of linear ribs 15N arranged in one first opening region R10D are also preferably arranged at equal intervals in the radial direction of the concentric circles.

  In the present embodiment, these arrangement relations regarding the plurality of linear ribs 15M and 15N (the center position of the concentric circles defining the plurality of linear ribs is a position different from the center 11C of the inner portion 11, The arrangement relationship that the linear ribs are arranged at equal intervals in the radial direction of the concentric circles) is established for all the linear ribs 15M and 15N provided in the first opening regions R10A to R10L.

  Referring again to FIG. 33, the plurality of linear ribs 15 </ b> M in the present embodiment has one end and the other end in the circumferential direction centering on the inner portion 11. For example, the linear rib 15M (15MS) has one end (position 15MT) and the other end (position 15MU), and these ends are provided at positions shifted in the circumferential direction. ing. The distance between one end (position 15MT) and the position of the center 11C of the inner part 11 is L7, and the distance between the other end (position 15MU) and the position of the center 11C of the inner part 11 is L8. In this case, it is preferable that the relationship of L8> L7 is established for all the linear ribs 15M.

  On the other hand, the plurality of linear ribs 15N in the present embodiment have one end and the other end in the circumferential direction centering on the inner portion 11. For example, the linear rib 15N (15NS) has one end (position 15NT) and the other end (position 15NU), and these ends are provided at positions shifted in the circumferential direction. ing. The distance between one end (position 15NT) and the position of the center 11C of the inner part 11 is L9, and the distance between the other end (position 15NU) and the center 11C of the inner part 11 is L10. In this case, it is preferable that the relationship of L9> L10 is established for all the linear ribs 15N.

(Function and effect)
Also in the fan guard 10K having the above-described configuration, the plurality of linear ribs 15M and 15N that define two adjacent first opening regions among the first opening regions R10A to R10L are bent. They are either continuous in shape or arranged so as not to be continuous with each other. According to this configuration, the direction of the airflow blown through each of the first opening regions R10A to R10L is defined in different directions by the linear ribs 15M and 15N. The direction of the air flow blown through each of the first opening regions R10A to R10L depends on the rotation direction of the fan 30 and the positions, shapes, and sizes of the linear ribs 15M and 15N. A desired value is set for each R10L.

  For example, the airflow passing through the upper and lower regions (first opening regions R10B, R10C, R10H, R10I) is converged, and the left and right regions (first opening regions R10A, R10D, R10E, R10F, R10G, R10J, R10K, R10L) Suppose that the airflow passing through is diffused. In this case, in the conventional electric fan, it is possible to spread the wind without shaking the head even in a portion that has been supported by swinging. For example, for a plurality of people sitting on a sofa or the person lying on a bed, the wind that diffuses up and down is unnecessary, so the upper and lower areas (first opening areas R10B, R10C, R10H, and R10I) Efficient ventilation can be realized by converging the airflow passing through the air.

  On the contrary, the airflow passing through the upper and lower regions (first opening regions R10B, R10C, R10H, R10I) is diffused, and the left and right regions (first opening regions R10A, R10D, R10E, R10F, R10G, R10J, Assume that the airflow passing through R10K and R10L is converged. For example, since it is not necessary for the wind to diffuse to the left and right when sitting alone in a chair, efficient blowing can be realized by concentrating the wind in a vertically long region. In some cases, it is better to concentrate the wind in a region where the wind is desired rather than to diffuse the wind gently around the entire circumference.

[Embodiment 13]
35, 36, 37, and 38 are a perspective view, a front view, a cross-sectional view, and a vertical cross-sectional view, respectively, showing the blower device 101 according to the thirteenth embodiment. For convenience of explanation, FIG. 35 shows a state where the fan guard 10Ja is removed from the casing 50, and in FIG. 36, the frame body 51 of the casing 50 is shown using a solid line. The front panel 52 of the housing 50 is illustrated using dotted lines. FIG. 39 is a front view showing the fan guard 10Ja provided in the blower 101. FIG.

  As shown in FIG. 35, the blower device 101 of the present embodiment is an outdoor unit of an air conditioner. The blower device 101 includes a housing 50, a fan guard 10Ja, and a fan 30. The housing 50 includes a frame body 51 and a front panel 52 and houses the fan 30. The frame 51 has a box-like shape with an opening on the front side, and the front panel 52 is disposed so as to close the opening of the frame 51 from the front side. The front panel 52 has a substantially circular ventilation port 53.

  As shown in FIGS. 36 to 38, in addition to the fan 30, a drive motor 31 (FIGS. 37 and 38), a heat exchanger 32, a motor angle 33, and a bell mouth 34 are provided inside the housing 50. . The bell mouth 34 is a plate-like body provided with an arc-shaped orifice. The bell mouth 34 is arranged coaxially with the fan 30 and faces the fan 30 with a predetermined gap.

  Referring to FIG. 39, fan guard 10Ja according to the present embodiment is different from fan guard 10J according to the eleventh embodiment (see FIG. 26) in the following points. The frames 14M and 14N of the fan guard 10Ja have a shape that curves in the opposite direction to the frames 14M and 14N of the fan guard 10J. The linear rib 15M of the fan guard 10Ja has a shape that curves in the opposite direction to the linear rib 15M of the fan guard 10J, and the linear rib 15N of the fan guard 10Ja is the linear rib 15N of the fan guard 10J. It has a shape that curves in the opposite direction.

  The outer frame portion 12 of the fan guard 10Ja has an annular shape. Both the inner shape 12a and the outer shape 12b of the outer frame portion 12 have a perfect circular shape. The outer shape 12 b of the outer frame portion 12 is substantially the same as the vent 53 of the front panel 52 or larger than the vent 53 of the front panel 52. In the present embodiment, both the outer shape 12 b and the vent 53 are circular, and the diameter of the outer shape 12 b is larger than the diameter of the vent 53. The fan guard 10Ja is disposed so as to cover the entire vent 53 from the outside of the housing 50 (front panel 52) (see FIG. 35).

  Since the fan guard 10Ja of the blower 101 has the same shape as the fan guard 10J in the above-described Embodiment 11, a large air volume is obtained and the straightness of the blown wind is high. It constitutes an outdoor unit with few so-called short circuits in which the blown wind is immediately sucked. Therefore, according to the air blower 101, energy saving is realizable and the driving | operation with high efficiency is attained. Furthermore, since the fan guard 10Ja can exhibit a unique and high aesthetic appearance, a commercial effect can also be expected. Needless to say, the fan guard in the other embodiments described above can be used in an outdoor unit of an air conditioner. The fan guard in this embodiment and other embodiments is not limited to an outdoor unit of an air conditioner, but includes various types such as an air conditioner, an air purifier, a humidifier, a dehumidifier, a fan, a fan heater, a cooling device, and a ventilation device. It can be applied to the blower.

[Embodiment 14]
FIG. 40 is a perspective view showing the air blowing device 102 according to the fourteenth embodiment. For convenience of explanation, FIG. 40 shows a state where the fan guard 10Jb is removed from the housing 50. FIG. 41 is a front view showing the fan guard 10Jb provided in the blower 102. FIG.

  With reference to FIG. 40, the air blower 102 of this Embodiment is also an outdoor unit of an air conditioner. In the present embodiment, fan guard 10Jb having a rectangular outer shape is used.

  As shown in FIG. 41, the fan guard 10Jb of the present embodiment is different from the fan guard 10Ja of the thirteenth embodiment (see FIG. 39) in the following points. The outer frame portion 12 of the fan guard 10Ja has an annular shape, whereas the outer frame portion 12 of the fan guard 10Jb has a rectangular shape. In the present embodiment, both the inner shape 12a and the outer shape 12b of the outer frame portion 12 have a rectangular shape.

  The outer shape 12b of the outer frame portion 12 of the fan guard 10Jb is substantially the same as the vent 53 of the front panel 52 or larger than the vent 53 of the front panel 52. In the present embodiment, the outer shape 12b is a rectangular shape, and the vent 53 is a circular shape. The fan guard 10Jb is disposed so as to cover the entire vent 53 from the outside of the housing 50 (front panel 52) (see FIG. 40).

  According to the fan guard 10Jb, it is possible to obtain an outdoor unit having high performance as in the case of the above-described eleventh and thirteenth embodiments, and the fan guard 10Jb increases the impression of the appearance of the outdoor unit. Since it can be changed, it is possible to configure outdoor units having various appearances according to the user's preference.

[Embodiment 15]
FIG. 42 is a front view showing a fan guard 10Jc provided in the air blower according to the fifteenth embodiment. The fan guard 10Jc of the present embodiment is different from the fan guard 10Jb (see FIG. 41) of the above-described fourteenth embodiment in the following points. The inner shape 12a of the outer frame portion 12 of the fan guard 10Jb has a rectangular shape, whereas the inner shape 12a of the outer frame portion 12 of the fan guard 10Jb has a circular shape. doing. That is, the outer frame portion 12 of the present embodiment has a circular inner shape 12a and a rectangular outer shape 12b.

  The fan guard 10Jc also makes it possible to obtain an outdoor unit having high performance as in the case of the eleventh embodiment and the thirteenth and fourteenth embodiments described above, and the fan guard 10Jc gives an impression of the appearance of the outdoor unit. Therefore, it is possible to configure outdoor units having various appearances according to the user's preference.

[Appendix]
The contents described in the above embodiments can be summarized as described in the following supplementary notes.

[Appendix 1]
A fan guard for guarding a fan,
An outer frame,
An inner part disposed inside the outer frame part;
A guard part provided between the outer frame part and the inner part,
The guard part
A plurality of first frames forming a plurality of first opening regions that are arranged in a circumferential direction and surround the periphery of the inner portion as a whole by partitioning a region between the outer frame portion and the inner portion;
A plurality of first linear ribs disposed in each of the first opening regions and provided to partition each of the first opening regions,
When viewed with respect to the first first opening region and the second first opening region adjacent to the first first opening region, a plurality of partitions defining the first first opening region The first linear ribs and the plurality of first linear ribs that define the second first opening region are continuous in a bent shape or arranged not to be continuous with each other. Being
Fan guard.

[Appendix 2]
Each of the plurality of first frames has an arc shape formed of a part of a circular shape,
The centers of the circular shapes corresponding to each of the plurality of arc shapes constituting the plurality of first frames are provided at different positions.
The fan guard according to appendix 1.

[Appendix 3]
The center of the circular shape corresponding to each of the plurality of arc shapes constituting the plurality of first frames is located on one spiral curve.
The fan guard as set forth in Appendix 2.

[Appendix 4]
The circular shape corresponding to each of the plurality of arc shapes constituting the plurality of first frames is arranged so as to be inscribed in one spiral curve.
The fan guard as set forth in Appendix 2.

[Appendix 5]
The plurality of first linear ribs arranged in one first opening region are arranged side by side concentrically.
The fan guard according to any one of appendices 1 to 4.

[Appendix 6]
The center position of the concentric circles defining the positions of the plurality of first linear ribs is a position different from the center position of the inner part.
The fan guard according to appendix 5.

[Appendix 7]
The plurality of first linear ribs arranged in one first opening region are arranged at equal intervals in the radial direction of the concentric circles.
The fan guard according to appendix 5 or 6.

[Appendix 8]
The first linear rib has one end and a second end in the circumferential direction centering on the inner side,
The distance between one end of the first linear rib and the center position of the inner part is L1, and the distance between the other end of the first linear rib and the center position of the inner part Is L2,
The relationship of L1> L2 is established for all the first linear ribs.
The fan guard according to any one of appendices 1 to 7.

[Appendix 9]
When the plurality of first opening regions surrounding the inner portion as a whole are annularly defined as one inner region,
The guard part
A plurality of second frames that form a plurality of second opening regions that are arranged in a circumferential direction and surround the periphery of the inner region in an annular shape as a whole by partitioning a region between the inner region and the outer frame portion;
A plurality of second linear ribs disposed in each of the second opening regions and provided so as to partition each of the second opening regions.
The fan guard according to any one of appendices 2 to 8.

[Appendix 10]
Each of the plurality of second frames has another arc shape formed of a part of another circular shape,
The centers of the other circular shapes corresponding to each of the plurality of other arc shapes forming the plurality of second frames are provided at different positions.
The fan guard according to appendix 9.

[Appendix 11]
The second linear rib has one end portion and the other end portion in the circumferential direction centering on the inner side portion,
The distance between one end of the second linear rib and the center position of the inner part is L3, and the distance between the other end of the second linear rib and the center position of the inner part Is L4, the relationship of L3> L4 is established for all the second linear ribs.
The fan guard according to appendix 9 or 10.

[Appendix 12]
When the plurality of second opening regions surrounding the inner region as a whole are annularly defined as one intermediate region,
The guard part further includes a plurality of third linear ribs arranged between the intermediate region and the outer frame part,
The plurality of third linear ribs are arranged so as to have rotational symmetry about the center position of the inner portion.
The fan guard according to any one of appendices 9 to 11.

[Appendix 13]
The plurality of third linear ribs are arranged radially centering on the center position of the inner portion.
The fan guard according to appendix 12.

[Appendix 14]
The first linear rib has one end and a second end in the circumferential direction centering on the inner side,
The distance between one end of the first linear rib and the center position of the inner portion is LA, and the distance between the other end of the first linear rib and the center position of the inner portion is LA. Is LB,
The first opening region in which the plurality of first linear ribs having a relationship of LA> LB are provided on the inside, and the plurality of first linear ribs having a relationship of LB> LA are provided on the inside. The first opening regions are alternately arranged in the circumferential direction.
The fan guard according to appendix 1 or 2.

[Appendix 15]
One end of the first frame is located on the outer periphery of the inner part,
The other end of the first frame is located on the outer frame,
The fan guard according to appendix 14.

[Appendix 16]
When the guard part is projected in the axial direction toward the back side of the fan, the projection image of the guard part has a portion overlapping the guard part of the back side fan guard arranged on the back side of the fan. Yes,
The fan guard according to any one of appendices 1 to 15.

[Appendix 17]
With fans,
A fan guard according to any one of appendices 1 to 16,
Blower device.

[Appendix 18]
When the rear edge of the fan is projected in the axial direction toward the front side with the rear edge of the fan facing the guard of the fan guard, the projected image of the rear edge is the fan guard. Intersects only part of the guard part of
The air blower according to appendix 17.

[Appendix 19]
A substantially circular ventilation opening, further comprising a housing for accommodating the fan;
The outer shape of the outer frame part of the fan guard is larger than the ventilation opening,
The fan guard is disposed so as to cover the ventilation hole from the outside of the housing.
The air blower according to appendix 17.

[Appendix 20]
The outer frame portion has a rectangular outer shape,
The air blower according to appendix 19.

  While the embodiments have been described above, the above disclosure is illustrative in all respects and not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I, 10J, 10Ja, 10Jb, 10Jc, 10K, 10Z1, 10Z2, 10Z3, 10Z4, 10Z5, 10Z6 Fan guard, 11 Inner part, 11C, 14AA, 14BB, 14DD, 14EE, 14RA, 14RD, 16PP, 16UU, DR, ER, MR, NR, TR, UR center, 12 outer frame part, 12a inner shape, 12b outer shape, 13 guard part, 14, 14M , 14N, 16 frames, 14R1, 14R2, 14R3, 14R4, 18R1, 18R2, 18R3, AA, BB, DD, DR1, DR2, DR3, EE, ER1, ER2, ER3, MR1, MR2, MR3, MR4, MR5 MR6, MR7, MR8, NR1, NR8, PP , QQ, RR, SS, TR1, TR2, TR3, TR4, TT, UR1, UR2, UR3, UR4, UU circular shape, 14SP spiral curve, 15, 15M, 15MS, 15N, 15NS, 17, 18 linear ribs, 15MT, 15MU, 15NT, 15NU, A1, A2, B1, B2, C1, C2, D1, D2, D11, D12, D21, D22, D31, D32, E1, E2, E11, E12, E21, E22, E31, E32, P1, P2, Q1, Q2, R1, R2, S1, S2, T1, T2, T11, T12, T21, T22, T31, T32, T41, T42, U1, U2, U11, U12, U21, U22, U31, U32, U41, U42 position, 18T, 18U, A11, P11 end, 20 rear side fan guard, 30 fans, 3 E rear edge, 31 drive motor, 32 heat exchanger, 33 motor angle, 34 bell mouth, 40 body, 50 housing, 51 frame, 52 front panel, 53 vent, 100, 101, 102 air blower, PE wire, R10D, R10C, R10B, R10H, R10J, R10E, R10L, R10F, R10A, R10N, R10G, R10I, R10K, R10M first opening region, R20U, R20T, R20P second opening region.

Claims (12)

A fan guard for guarding a fan,
An outer frame,
An inner part disposed inside the outer frame part;
A guard part provided between the outer frame part and the inner part,
The guard part is
A plurality of first frames forming a plurality of first opening regions that are arranged in a circumferential direction and surround the periphery of the inner portion as a whole by partitioning a region between the outer frame portion and the inner portion;
A plurality of first linear ribs disposed in each of the first opening regions and provided to partition each of the first opening regions,
When viewed with respect to the first first opening region and the second first opening region adjacent to the first first opening region, a plurality of the first opening regions are partitioned. The first linear ribs and the plurality of first linear ribs that define the second first opening region are continuous in a bent shape or arranged not to be continuous with each other. Being
Fan guard. Each of the plurality of first frames has an arc shape formed of a part of a circular shape,
The centers of the circular shapes corresponding to each of the plurality of arc shapes constituting the plurality of first frames are provided at different positions.
The fan guard according to claim 1. The plurality of first linear ribs arranged in one first opening region are arranged side by side concentrically,
The fan guard according to claim 1 or 2. The center position of the concentric circles defining the positions of the plurality of first linear ribs is a position different from the center position of the inner side part.
The fan guard according to claim 3. The plurality of first linear ribs arranged in one first opening region are arranged at equal intervals in the radial direction of the concentric circles.
The fan guard according to claim 3 or 4. The first linear rib has one end portion and the other end portion in a circumferential direction centering on the inner side portion,
The distance between one end of the first linear rib and the center position of the inner part is L1, and the distance between the other end of the first linear rib and the center position of the inner part Is L2,
A relationship of L1> L2 is established for all the first linear ribs,
The fan guard according to any one of claims 1 to 5. The first linear rib has one end portion and the other end portion in a circumferential direction centering on the inner side portion,
The distance between one end of the first linear rib and the center position of the inner portion is LA, and the distance between the other end of the first linear rib and the center position of the inner portion is LA. Is LB,
A plurality of the first linear ribs having a relationship of LA> LB and a plurality of the first linear ribs having a relationship of LB> LA are provided inside. The first opening regions are alternately arranged in the circumferential direction,
The fan guard according to claim 1 or 2. One end of the first frame is located on the outer periphery of the inner part,
The other end of the first frame is located on the outer frame,
The fan guard according to claim 7. When the guard part is projected in the axial direction toward the back side of the fan, the projected image of the guard part has a portion overlapping the guard part of the back side fan guard arranged on the back side of the fan. Yes,
The fan guard according to any one of claims 1 to 8. With fans,
A fan guard according to any one of claims 1 to 9,
Blower device. A substantially circular ventilation opening, further comprising a housing for accommodating the fan;
The outer shape of the outer frame portion of the fan guard is larger than the ventilation opening,
The fan guard is disposed so as to cover the ventilation opening from the outside of the housing.
The air blower according to claim 10. The outer frame portion has a rectangular outer shape,
The blower according to claim 11.