JP2010236715A - Blower for air conditioner, indoor unit for air conditioner, and outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blower for an air conditioner capable of urging a person who is about to put his hand inside a casing to take precautions and improving safety more, and to provide an indoor unit for the air conditioner, and an outdoor unit for the air conditioner. <P>SOLUTION: This blower for the air conditioner includes an impeller with a plurality of blades 43, and the casing for storing the impeller, and the blower is configured so that the impeller is visible from an air blowout port arranged in the casing. Moreover, a part of the impeller is formed in a color for calling attention different from that of the entire impeller. More specifically, the color for calling attention is given at least to one blade 43 constituting the impeller, and moreover, it is given at least to the outer peripheral side edge 43a of the impeller 43. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a blower for an air conditioner provided with a rotary blade having a plurality of blades, and an indoor unit or an outdoor unit of the air conditioner provided with the same.

  Conventionally, a cross-flow fan, a centrifugal fan, or the like is used as a blower for an air conditioner. Specifically, for example, a cross-flow fan or a turbo fan that is a centrifugal fan is used for an indoor unit of an air conditioner, and a propeller fan that is an axial fan is used for an outdoor unit (for example, Patent Document 1). To 3).

  In general, a blower for an air conditioner includes a rotating blade having a plurality of blades and a casing that houses the rotating blade, and the casing is used for air to flow from the inside of the casing to the outside, or of the casing. It has an opening for air to flow from the outside to the inside.

  Although the rotary blades accommodated in the casing are visible from the opening provided in the casing, they do not appear in the appearance of the air conditioner, and thus are generally configured with inconspicuous colors (for example, black or gray). From the viewpoint of reducing the manufacturing cost, the rotary blade is formed of, for example, a single color resin.

JP-A-9-184499 JP 2007-147142 A JP 2002-257096 A

  By the way, in the air conditioner blower, the rotating blades rotating inside the casing rotate at, for example, 1000 rpm, so that, for example, human hands cannot contact the rotating blades from the opening of the casing in order to improve safety. It is preferable to take measures to As such a measure, it is known to provide a mesh fence at the opening of the casing.

  However, when the fence provided in the opening of the casing does not cover all of the opening of the casing, there is a problem that safety cannot be sufficiently ensured. Further, if the rotating blades are visible from the opening provided in the casing, a person who wants to put a hand into the casing (for example, a dismantling operator of the air conditioner) rotates the rotating blades in the casing. Although it can be visually determined whether or not the rotating blades are rotating in a dark space inside the casing, it is difficult to recognize whether or not the rotating blades are rotating. Therefore, in the air blower for an air conditioner, there is a problem that it is difficult to alert a person who puts a hand into the casing.

  The present invention has been made in view of such circumstances, and its purpose is to bring attention to a person who wants to put his hand inside the casing, and to improve the safety. An object is to provide a blower for an apparatus, an indoor unit of an air conditioner, and an outdoor unit of an air conditioner.

  The invention described in claim 1 includes a rotating blade having a plurality of blades and a casing that houses the rotating blades, and the fan for an air conditioner in which the rotating blades are visible from an opening provided in the casing is rotated. A part of the blade is configured with a warning color different from the entire color of the rotary blade.

  According to the same configuration, in the air conditioner blower in which the rotating blades can be visually recognized from the opening provided in the casing, a part of the rotating blades is configured with a warning color different from the entire color of the rotating blades. . For this reason, it is possible to recognize that the rotating blade is rotating by visually recognizing the rotating blade whose alert color is like the whole color, etc. It can be recognized that the rotating blade is stationary by visually recognizing a part. Therefore, it is possible to recognize whether or not the rotating blades are rotating, and it is possible to alert a person who wants to put his hand into the casing. As a result, safety can be further improved.

  A second aspect of the present invention is the air conditioner blower according to the first aspect, wherein the rotary blade is an impeller used for a cross flow fan in which gas crosses perpendicularly to the rotation axis. The blades constituting the impeller have an outer peripheral side edge which is an edge provided on the rotating centrifugal side of the impeller, and a warning color is attached to at least one blade constituting the impeller. Furthermore, it is characterized by being attached to at least the outer peripheral side edge of the blade. Note that the “rotating shaft” here is an axis that becomes the center of rotation of the rotating blades.

  According to this configuration, the rotating blade is an impeller used for a cross flow fan, and a warning color is attached to at least one blade constituting the impeller, and further, at least at the outer peripheral side edge of the blade. It is attached. Therefore, since the outer peripheral side edge is an edge provided on the rotating centrifugal side of the impeller, it is possible to effectively improve the visibility of the alert color without attaching the alert color to the entire surface of the blade. it can.

  A third aspect of the present invention is the air conditioner blower according to the first aspect, wherein the rotary blade is an impeller used for a cross flow fan in which gas crosses perpendicularly to the rotation axis. Except for at least one blade constituting the impeller, the alert color is applied to the entire surface of the blade constituting the impeller.

  According to this configuration, the rotating blade is an impeller used for a cross flow fan, and a warning color is applied to the entire surface of the blade constituting the impeller, except for at least one blade. For this reason, the visibility of the alert color can be reliably improved as compared with the case where the alert color is attached only to the outer peripheral edge, for example.

  Invention of Claim 4 is an air conditioner blower of Claim 1, Comprising: A rotary blade is a centrifugal impeller, The blade | wing which comprises a centrifugal impeller is the centrifugal type. At least one blade that has a pressure surface facing the rotational centrifugal side of the impeller and a negative pressure surface facing the rotational center side of the centrifugal impeller, and the warning color constitutes the centrifugal impeller And is attached to at least the suction surface of the blade.

  According to this configuration, the rotary blade is a centrifugal impeller, and a warning color is attached to at least one blade constituting the centrifugal impeller, and is further attached to at least the suction surface of the blade. . When the suction surface of the blades that make up the centrifugal impeller is inclined toward the opening of the casing, the visibility of the warning color is effectively reduced without attaching the warning color to the entire surface of the blade. Can be improved.

  Invention of Claim 5 is an air conditioner blower for Claim 1 or Claim 4, Comprising: A rotary blade is a centrifugal impeller, The blade | wing which comprises a centrifugal impeller is , Having a rotation center side edge which is an edge provided on the rotation center side of the centrifugal impeller, a warning color is attached to at least one blade constituting the centrifugal impeller, and It is characterized by being attached to at least the rotation center side edge of the blade.

  According to this configuration, the rotating blade is a centrifugal impeller, and a warning color is attached to at least one blade constituting the impeller, and further attached to at least the rotation center side edge of the blade. Yes. Therefore, since the centrifugal impeller blows air from the rotation center side to the rotation centrifugal side, when the opening corresponding to the rotation center of the centrifugal impeller is provided in the casing, a warning color is applied to the entire surface of the blade. Without attaching, the visibility of the alert color can be effectively improved.

  A sixth aspect of the present invention is the air conditioner blower according to any one of the first, fourth, and fifth aspects, wherein the rotary blade is a centrifugal impeller, and the centrifugal blade The car has a hub that is fixed to a rotary drive shaft that drives the centrifugal impeller and is provided with blades, and the alert color is one of the surfaces of the hub facing the opening provided in the casing. It is attached to the part.

  According to this configuration, the rotary blade is a centrifugal impeller, and a warning color is attached to a part of the surface of the hub facing the opening provided in the casing. For this reason, even if it is difficult to visually recognize the blades of the centrifugal impeller from the opening of the casing, the centrifugal impeller can be seen without attaching a warning color to the blades by visually recognizing the hub of the centrifugal impeller. Whether it is rotating or not can be recognized.

  A seventh aspect of the present invention is the air conditioner blower according to the first aspect, wherein the rotary blade is an impeller used for a propeller fan, and the blade constituting the impeller is a casing of the casing. It has a pressure surface for blowing gas to the outside, and a warning color is attached to at least one blade constituting the impeller, and is further attached to at least the pressure surface of the blade. .

  According to this configuration, the rotating blade is an impeller used for a propeller fan, and a warning color is attached to at least one blade constituting the impeller, and further attached to at least a pressure surface of the blade. Yes. Therefore, when the blade blows gas to the outside of the casing, the pressure surface is provided toward the outside of the casing, so the visibility of the warning color is effective without attaching the warning color to the entire surface of the blade. Can be improved.

  The invention according to claim 8 is the air conditioner blower according to claim 1 or claim 7, wherein the rotary blade is an impeller used for a propeller fan, and the blade constituting the impeller Has a front edge portion that is an edge portion on the rotational direction side of the impeller and a rear edge portion that is an edge portion on the reverse rotation direction side of the impeller, while blowing gas to the outside of the casing, A reminder color is attached to at least one blade constituting the impeller, and further attached to at least the rear edge of the blade.

  According to this configuration, the rotary blade is an impeller used for a propeller fan, and a warning color is attached to at least one blade constituting the impeller, and is further attached to at least the rear edge of the blade. It has been. Therefore, when the blade blows gas to the outside of the casing, the trailing edge is closer to the opening of the casing than the leading edge, so that only the leading edge is colored. In comparison, the visibility of the alert color can be effectively improved.

  The invention according to claim 9 is the air conditioner blower according to any one of claims 1 to 8, wherein the warning color is a bright warning for the entire color of the rotating blades. It is a color.

  According to this configuration, since the alert color is a bright warning color with respect to the entire color of the rotating blade, for example, if the entire color of the rotating blade is black, the alert color is yellow. In this way, if the alert color is a bright warning color, it is possible to attract more attention to those who want to put their hands inside the casing.

  A tenth aspect of the present invention is the air conditioner blower according to any one of the first to ninth aspects, wherein the caution color is a paint of the caution color. Thus, a part of the rotary blade is colored and attached.

  According to this configuration, the alert color is attached to a part of the rotating blade by applying the alert color paint. For this reason, for example, a warning color can be given without forming a rotary blade by two-color molding.

  The invention according to claim 11 is the air conditioner blower according to any one of claims 1 to 9, wherein the alert color is affixed with a tape of the alert color. It is characterized by being attached to a part of the rotary blade.

  According to this configuration, the alert color is attached to a part of the rotating blade by applying the alert color tape. For this reason, a warning color can be easily attached to a part of the rotating blades.

  A twelfth aspect of the present invention is the air conditioner blower according to any one of the first to ninth aspects, wherein the caution color is injected using the resin material of the caution color. It is characterized by being attached to a part of the rotary vane by being molded.

  According to this configuration, the alert color is attached to a part of the rotary blade by injection molding using the resin material of the alert color. Therefore, since the rotary blade is formed by two-color molding of the entire color (for example, black) and a warning color (for example, yellow), the warning color can be attached simultaneously with the molding of the rotary blade.

A thirteenth aspect of the present invention is an indoor unit of an air conditioner, and includes the air conditioner blower according to any one of the first to twelfth aspects.
According to this configuration, since the indoor unit of the air conditioner includes the air conditioner blower according to any one of claims 1 to 12, any one of claims 1 to 12. The same effect as the blower described in the above item can be obtained.

A fourteenth aspect of the present invention is an outdoor unit of an air conditioner, comprising the air conditioner blower according to any one of the first to twelfth aspects.
According to this configuration, since the outdoor unit of the air conditioner includes the air conditioner blower according to any one of claims 1 to 12, any one of claims 1 to 12. The same effect as the blower described in the above item can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, attention can be alerted to those who are going to put a hand in the inside of a casing, and safety can be improved more.

It is a schematic block diagram of the air conditioning apparatus which concerns on the 1st Embodiment of this invention, Comprising: The figure which shows the indoor unit of an air conditioning apparatus provided with a crossflow fan as a fan. The perspective view which shows the impeller which concerns on the same embodiment. (A) (b) The perspective view which shows the blade | wing which concerns on the same embodiment. It is the side view of the blade | wing which concerns on the same embodiment, Comprising: The figure which looked at the blade | wing from the axial direction. It is a schematic block diagram of the air conditioning apparatus which concerns on the 2nd Embodiment of this invention, Comprising: The figure which shows the indoor unit of the air conditioning apparatus provided with a centrifugal fan as a blower. It is a figure which shows the impeller which concerns on the same embodiment, Comprising: The figure which looked at the impeller from the opening direction of the casing. The perspective view which shows the impeller which concerns on the same embodiment. It is the side view which shows the impeller which concerns on the same embodiment, Comprising: The figure which looked at the impeller from the radial direction perpendicular | vertical to an axial direction. It is a cross-sectional perspective view of the impeller which concerns on the embodiment, Comprising: The perspective view which shows the cross section of S1-S1 part shown in FIG. It is a schematic block diagram of the air conditioning apparatus which concerns on the 3rd Embodiment of this invention, Comprising: The figure which shows the outdoor unit of an air conditioning apparatus provided with an axial flow fan as an air blower. It is a figure which shows the impeller which concerns on the same embodiment, Comprising: The figure which looked at the impeller from the opening direction of the casing. The perspective view which shows the impeller which concerns on the same embodiment. It is the side view which shows the impeller which concerns on the same embodiment, Comprising: The figure which looked at the impeller from the radial direction perpendicular | vertical to an axial direction. It is a perspective view which shows the blade | wing which concerns on the same embodiment, Comprising: The figure which shows a part of impeller.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, an arrow A indicates an axial direction that is a direction parallel to an axis that is a rotation center of the rotary blade (that is, a rotation axis). Further, in the direction perpendicular to the axial direction, the rotary centrifugal side moving away from the center of rotation of the rotary blade is indicated by an arrow S in the drawing, and the rotation center side approaching the rotation center of the rotary blade is indicated by an arrow U in the drawing. .

(First embodiment)
As shown in FIG. 1, the indoor unit 1 of the air conditioner according to the present embodiment is a wall-mounted indoor unit, and the indoor unit 1 that is an air conditioner is a casing 11 that is a casing of the indoor unit 1. And a heat exchanger 12 disposed inside the casing 11 and an impeller 13 disposed on the downstream side of the heat exchanger 12 in the air flow direction.

  The resin casing 11 has an air inlet 11a that is a space for sucking air from the outside to the inside of the casing 11, and an air outlet 11b that is a space for blowing air from the inside of the casing 11 to the outside. is doing. Air inlets 11 a that are openings provided in the casing 11 are provided on the upper side and the front side of the casing 11, and an air outlet 11 b as an opening provided in the casing 11 is provided on the front side and the lower side of the casing 11. Is provided.

  The air outlet 11b is provided with a vertical blade 11c and a horizontal blade 11d for adjusting the direction of the air blown from the air outlet 11b, but the impeller housed in the casing 11 from the air outlet 11b. 13 can be visually recognized.

  The heat exchanger 12 is provided so as to cover the upper side (suction side) of the impeller 13, and the air sucked into the casing 11 from the air suction port 11 a is cooled by passing through the heat exchanger 12. Or it becomes the heated conditioned air, and this conditioned air is blown out of the casing 11 from the air outlet 11b by the impeller 13.

  The impeller 13 is a rotary blade used for a cross flow fan in which gas crossflows perpendicularly to the rotation axis. That is, the blower 10 for an air conditioner according to the present embodiment is a cross-flow fan (cross flow fan), which houses the impeller 13 and the impeller 13 and forms the air passage and the impeller 11 and the impeller. It is comprised by the electric motor (not shown) which drives 13.

  As shown in FIG. 2, the impeller 13 includes two support plates 41 each having a shaft portion 41 a, and a plurality of support members 42 disposed at predetermined intervals in the axial direction A between the two support plates 41. And a plurality of blades 43 provided between the support plate 41 and the support member 42 and between the plurality of support members 42.

  The support plate 41 is a circular support plate made of resin. A plurality of blades 43 are provided on the outer peripheral side edge of the side surface of the support plate 41 so as to form a circle, and the blades 43 are supported by the support plate 41 in this way. The shaft portion 41a of the support plate 41 is rotatably supported, and at least one shaft portion 41a of the two support plates 41 is connected to the electric motor. Therefore, when the electric motor is driven, the blade 43 and the support member 42 are rotated together with the support plate 41.

  The support member 42 is an annular support plate made of resin. A plurality of blades 43 are provided on the side surface of the support member 42 so as to form a circle along the entire circumference of the annular support member 42. In this way, the blades 43 are supported by the support member 42. From the viewpoint of simplifying the manufacturing process, it is preferable that one support member 42 and the blades 43 supported by the support member 42 are integrally formed.

  The blades 43 are curved resin blades, and a plurality of blades 43 are arranged along the direction of rotation of the impeller 13 so as to form a forward blade structure. As shown in FIG. 3 and FIG. 4, each blade 43 constituting the impeller 13 is arranged on the outer peripheral side edge 43 a that is an edge provided on the rotating centrifugal side of the impeller 13 and on the rotation center side of the impeller 13. And an inner peripheral edge 43b which is an edge provided.

  The curved blades 43 include a pressure surface (positive pressure surface) 43p that increases pressure when the stationary impeller 13 rotates, and a stationary impeller 13. It has a negative pressure surface 43q which is a surface where the pressure becomes smaller when rotating.

  The pressure surface 43p has a concave curved surface when viewed from the axial direction A, and faces the direction in which the impeller 13 rotates. Further, the negative pressure surface 43q has a convex curved surface when viewed from the axial direction A, and faces the direction opposite to the direction in which the impeller 13 rotates.

  In the impeller 13 in which the blades 43 are arranged in the forward blade structure, the pressure surface 43p faces the rotation center side, and the negative pressure surface 43q faces the rotation centrifugal side. Therefore, when the impeller 13 is viewed from a direction perpendicular to the axial direction A, the negative pressure surface 43q is easier to visually recognize than the pressure surface 43p.

  As described above, the air conditioner blower 10 according to this embodiment includes the impeller 13 having the plurality of blades 43 and the casing 11 that houses the impeller 13, and the air blower provided in the casing 11. The impeller 13 is configured to be visible from the outlet 11b.

  The impeller 13 is configured to rotate at, for example, 1000 to 2000 rpm, and attention is given to avoid putting a hand into the casing 11 during the rotation of the impeller 13 according to the instruction manual of the indoor unit 1 or the like. Is done. However, if the impeller 13 is formed with a single color while attention is paid not to put the hand into the casing 11 during the rotation of the impeller 13, the impeller 13 is formed in a dark space inside the casing 11. It is difficult to recognize whether the car 13 is rotating.

  Here, the present embodiment is characterized in that a part of the impeller 13 is configured with a warning color different from the entire color of the impeller 13. Specifically, in the blades 43 constituting the impeller 13, the surface portion of the portion surrounded by the broken line B1 shown in FIGS. 3 and 4 is a single color for alerting, and is surrounded by the broken line B1. The surface portion excluding the part is composed of another color different from the alert color. Since the area of the surface portion of the portion surrounded by the broken line B1 is smaller than the area of the surface portion excluding the portion surrounded by the broken line B1, the color of the surface portion excluding the portion surrounded by the broken line B1 is impeller 13. It has become the whole color. In addition, the support plate 41 and the support member 42 which comprise the impeller 13 are the same color as the surface part except the location shown enclosed with the broken line B1, Comprising: It is comprised by another color different from a warning color.

  As the overall color of the impeller 13, an inconspicuous color such as black or gray is used, and the noticeable color can be a conspicuous color as compared to the overall color of the impeller 13. That is, when the entire color of the impeller 13 is an achromatic color such as black or gray, a chromatic color can be used as the alert color, and when the entire color of the impeller 13 is a chromatic color, A complementary color of the entire color of the impeller 13 can be used as the alert color. If the overall color of the impeller 13 is low, such as black, the alert color is preferably high, and the overall color of the impeller 13 is low, such as gray. For example, the alert color preferably has high saturation.

  Moreover, in this embodiment, in order to warn the person who tries to put a hand into the inside of the casing 11 from the air blower outlet 11b, with respect to the whole color of the impeller 13, the warning color is a bright warning color. It has become. That is, for example, if the overall color of the impeller 13 is black, the alert color is yellow.

  Further, in the present embodiment, a part of the impeller 13 configured by the alert color is in the vicinity of the outer peripheral side edge 43a of the blade 43, and the outer peripheral side edge 43a in the negative pressure surface 43q is mainly used with attention to the blade 43. It has an arousing color. That is, the outer peripheral side edge 43a including a part of the negative pressure surface 43q of the blade 43 is configured by the alert color.

  Moreover, in this embodiment, the alert color is colored and attached to a part of the impeller 13 by coating the alert color in the vicinity of the outer peripheral side edge 43a of the blade 43. . That is, the support plate 41, the support member 42, and the blades 43 that constitute the impeller 13 are all formed of the same color resin, and a part of the blades 43 is alerted by painting after the blades 43 are formed. It is comprised by.

  In addition, the blade | wing 43 in which one part was comprised by the alert color may be one blade | wing 43 which comprises the impeller 13, and in order to improve the visibility of an alert color, the impeller 13 is comprised. A part of each of the plurality of blades 43 may be configured with a caution color.

  As described above, a part of the blade 43 is configured with a warning color that is different from the entire color of the impeller 13, so that the overall appearance of the impeller 13 changes when the impeller 13 rotates. That is, if the impeller 13 is not rotated, a part of the blade 43 constituted by the alert color can be visually recognized, or the alert color cannot be visually recognized at all due to the structure of the casing 11. When the car 13 rotates, the alert color appears to be the entire color of the impeller 13, or the alert color appears to be included in the overall color of the impeller 13.

According to the blower 10 for an air conditioner of the present embodiment, the following effects can be obtained.
(1) In the air conditioner blower 10 in which the impeller 13 is visible from the air outlet 11b provided in the casing 11, a part of the impeller 13 is different from the overall color of the impeller 13 It is comprised by. For this reason, it is possible to recognize that the impeller 13 is rotating by visually recognizing the impeller 13 in which the alert color is the same as the entire color, and the impeller configured by the alert color. It is possible to recognize that the impeller 13 is stationary by visually recognizing a part of the vehicle 13 or the like. Therefore, it is possible to recognize whether or not the impeller 13 is rotating, and to alert a person who intends to put his hand inside the casing 11. As a result, safety can be further improved.

  (2) The rotating blade is an impeller 13 used for a cross flow fan, and a warning color is attached to at least one blade 43 constituting the impeller 13, and at least an outer peripheral side edge of the blade 43 43a. Accordingly, since the outer peripheral side edge 43a is an edge provided on the rotary centrifugal side of the impeller 13, the visibility of the warning color is effectively improved without attaching the warning color to the entire surface of the blade 43. Can be made.

  (3) The alert color is a bright warning color with respect to the entire color of the impeller 13. For this reason, if the alert color is a bright warning color, it is possible to attract more attention to a person who wants to put his hand into the casing 11.

  (4) The attention calling color is colored and attached to a part of the impeller 13 by the paint of the attention calling color being applied. For this reason, for example, a warning color can be given without forming the impeller 13 by two-color molding.

  Moreover, since the indoor unit 1 of the air conditioning apparatus of this embodiment is equipped with the air blower 10 for air conditioning apparatuses which can acquire the effect of said (1)-(4), (1)-(4) The same effect can be obtained.

(Second Embodiment)
As shown in FIG. 5, the indoor unit 2 of the air conditioner according to the present embodiment is a ceiling-embedded indoor unit, and the indoor unit 2 that is an air conditioner is a casing that is a casing of the indoor unit 2. 21, a heat exchanger 22 disposed inside the casing 21, and a centrifugal impeller 23 disposed on the upstream side of the heat exchanger 22 in the air flow direction.

  The indoor unit 2 includes an electric motor 24 that drives the centrifugal impeller 23, a bell mouth 25 for smoothly flowing air into the centrifugal impeller 23, a lattice member 26 that covers the opening of the bell mouth 25, and A filter F and a drain pan 27 that receives drain water generated by condensation of moisture in the air in the heat exchanger 22 are provided.

  The casing 21 made of metal and resin includes an air inlet 21a that is a space for sucking air from the outside to the inside of the casing 21, and an air outlet 21b that is a space for blowing air from the inside of the casing 21 to the outside. have. An air suction port 21 a that is an opening provided in the casing 21 is provided in the center of the lower side of the casing 21, and the air outlets 21 b as openings provided in the casing 21 are provided at both ends on the lower side of the casing 21. Is provided. In the present embodiment, the casing 21 includes a metal casing body 21A provided by being inserted into an opening formed in the ceiling, and a resin decorative panel 21B provided so as to be fitted into the opening in the ceiling. Has been.

  As described above, the air suction port 21 a is provided below the central portion of the centrifugal impeller 23, and the air suction port 21 a corresponds to the rotation center of the centrifugal impeller 23. Accordingly, the air suction port 21a is provided with the lattice member 26 and the filter F that cover the opening of the bell mouth 25. However, when the lattice member 26 and the filter F are removed, the casing is opened from the air suction port 21a. The centrifugal impeller 23 accommodated in 21 can be visually recognized.

  The heat exchanger 22 is provided so as to cover the rotating centrifugal side (blow-out side) of the centrifugal impeller 23, and the air sucked into the casing 21 from the air suction port 21 a is caused by the centrifugal impeller 23. After being blown to the rotary centrifugal side, the conditioned air is cooled or heated by passing through the heat exchanger 22 and blown out of the casing 21 from the air outlet 21b.

  The centrifugal impeller 23 is a rotary blade used for a centrifugal fan. That is, the air conditioner blower 20 according to the present embodiment is a centrifugal fan, and houses the centrifugal impeller 23, the centrifugal impeller 23, and the casing 21 and the bell mouth 25 that form an air flow path. The electric motor 24 drives the centrifugal impeller 23.

  As shown in FIGS. 6 and 7, the centrifugal impeller 23 includes a hub 51 to which the output shaft of the electric motor 24 is attached, a main plate 52 formed integrally with the hub 51, and blades provided on the main plate 52. 53 and an annular shroud 54. FIG. 6 is a view of the centrifugal impeller 23 viewed from the opening direction of the casing 21 (that is, the lower side).

  The hub 51 is a plate made of resin and is a central portion of the centrifugal impeller 23 to which the output shaft of the electric motor 24 is attached. Therefore, the output shaft of the electric motor 24 is fixed to the hub 51 as a rotational drive shaft that drives the centrifugal impeller 23. Since the output shaft of the electric motor 24 is connected to the center of the hub 51, the main plate 52, the blades 53, and the shroud 54 are rotated together with the hub 51 by driving the electric motor 24. .

  The main plate 52 is formed integrally with the hub 51, and is a plate extending from the hub 51, which is the central portion of the centrifugal impeller 23, to the rotary centrifugal side. The main plate 52 is provided with a plurality of blades 53 so as to form a circle along the entire circumference of the circular main plate 52, and thus the blades 53 are supported by the main plate 52. Accordingly, the blades 53 are provided on the hub 51 via the main plate 52.

  The blades 53 are resin blades, and a plurality of blades 53 are arranged along the direction of rotation of the centrifugal impeller 23 so as to be backward blades. That is, the blower 20 as a centrifugal fan according to the present embodiment is a turbo fan. As shown in FIG. 9, which is a cross-sectional view of the XX portion of FIG. 8, each blade 53 constituting the centrifugal impeller 23 is a rotary centrifuge that is an edge provided on the rotary centrifugal side of the centrifugal impeller 23. It has the side edge part 53a and the rotation center side edge part 53b which is an edge part provided in the rotation center side of the impeller 13. In the present embodiment, since the blower 20 is a turbo fan, the rotary centrifugal side edge 53a is a rear edge, and the rotation center side edge 53b is a front edge.

  The blades 53 include a pressure surface (positive pressure surface) 53p, which is a surface where pressure increases when the centrifugal impeller 23 in a stationary state rotates, and a centrifugal impeller 23 in a stationary state. It has a negative pressure surface 53q which is a surface where pressure is reduced when rotating.

  In the centrifugal impeller 23 in which the blades 53 are arranged as rearward blades, the pressure surface 53p faces the rotational centrifugal side of the centrifugal impeller 23, and the negative pressure surface 53q faces the rotational center side of the centrifugal impeller 23. Yes. Therefore, as shown in FIGS. 6 and 7, when the center of the centrifugal impeller 23 is viewed from the axial direction A, the negative pressure surface 53q is easier to visually recognize than the pressure surface 53p.

  Further, in the present embodiment, the blades 53 are curved so as to be twisted in order to improve the blowing efficiency, and the negative pressure surface 53q of the blades 53 on the rotation center side faces the air suction port 21a of the casing 21. Is inclined. Specifically, the negative pressure surface 53q faces the main plate 52 at the rotary centrifugal side edge 53a, and the pressure surface 53p faces the main plate 52 at the rotation center side edge 53b. Therefore, as shown in FIG. 6, when the rotation center side edge 53b of the centrifugal impeller 23 is viewed from the direction perpendicular to the axial direction A, the negative pressure surface 53q is more easily visible than the pressure surface 53p. It has a configuration.

  The shroud 54 is an annular member provided so as to cover a part of the blade 53, and the shroud 54 is provided so as to face the main plate 52 in the axial direction A. Therefore, the blade 53 partially covered with the shroud 54 is configured such that when the centrifugal impeller 23 is viewed from the axial direction A, the rotary centrifugal side edge 53a of the blade 53 cannot be visually recognized.

  The electric motor 24 is a fan motor that drives the centrifugal impeller 23, and is provided on the upper side of the hub 51 as shown in FIG. 5. Moreover, the bell mouth 25 has a trumpet-shaped opening, and the lower side of the centrifugal impeller 23 is arranged so that air can easily flow into the central portion of the centrifugal impeller 23 that is the rotation center side. A bell mouth 25 is provided.

  When the bell mouth 25 is provided on the lower side of the centrifugal impeller 23, the blade 53 of the centrifugal impeller 23 becomes difficult to see. Even in such a case, as shown in FIG. The rotation center side edge 53b is configured to be visible without being covered by the bell mouth 25.

  The lattice member 26 is a resin fan guard provided for the purpose of protecting the centrifugal impeller 23 and the like, and is provided so as to cover the air suction port 21a. The drain pan 27 is a resin member and is provided below the heat exchanger 22.

  As described above, the air conditioner blower 20 according to the present embodiment includes the centrifugal impeller 23 having the plurality of blades 53 and the casing 21 that houses the centrifugal impeller 23, and is provided in the casing 21. The centrifugal impeller 23 is configured to be visible from the air suction port 21a.

  During normal use of the indoor unit 2, the air suction port 21 a is provided with the lattice member 26 and the filter F, and thus is configured so that the hand does not enter the casing 21. At the time of cleaning, the lattice member 26 and the filter F are removed. And when cleaning the filter F, it is preferable that the centrifugal impeller 23 is not rotating in order to ensure safety. However, even if the supply of electric power to the electric motor 24 is stopped, the centrifugal impeller 23 continues to rotate by inertia for a predetermined time. For this reason, it is preferable to visually determine whether or not the centrifugal impeller 23 is rotating. However, when the centrifugal impeller 23 is formed of one color, the centrifugal impeller 23 is centrifuged in a dark space inside the casing 21. It is difficult to recognize whether the type impeller 23 is rotating.

  Therefore, also in this embodiment, a part of the centrifugal impeller 23 is configured with a warning color different from the entire color of the centrifugal impeller 23. Specifically, in the blade 53 that constitutes the centrifugal impeller 23, the surface portion of the portion surrounded by the broken line B2 shown in FIGS. 6 and 9 is a single color for alerting, and is surrounded by the broken line B2. The surface portion excluding the location indicated by is composed of another color different from the alert color. Since the area of the surface portion of the portion surrounded by the broken line B2 is smaller than the area of the surface portion excluding the portion surrounded by the broken line B2, the color of the surface portion excluding the portion surrounded by the broken line B2 is the centrifugal blade. The overall color of the car 23 is displayed. The hub 51, the main plate 52, and the shroud 54 constituting the centrifugal impeller 23 are the same color as the surface portion except for the portion surrounded by the broken line B2, and are constituted by another color different from the alert color. Has been.

  As the overall color of the centrifugal impeller 23, as in the first embodiment, an inconspicuous color such as black or gray is used, and the alert color is also the centrifugal type as in the first embodiment. A conspicuous color can be used as compared with the entire color of the impeller 23. Also in the present embodiment, the alert color is composed of a bright warning color for the entire color of the centrifugal impeller 23.

  Further, in the present embodiment, a part of the centrifugal impeller 23 configured by the alert color is in the vicinity of the rotation center side edge 53b of the blade 53, and mainly the rotation center side edge 53b of the suction surface 43q. A warning color is attached to the blade 53. That is, the rotation center side edge portion 53b including a part of the suction surface 53q of the blade 53 is configured by a warning color.

  The alert color is applied by painting as in the first embodiment. Specifically, the alert color is colored and attached to a part of the centrifugal impeller 23 by coating the alert color in the vicinity of the rotation center side edge 53b of the blade 53. . That is, the hub 51, the main plate 52, the blades 53, and the shroud 54 constituting the centrifugal impeller 23 are all formed of the same color resin, and a part of the blades 53 is coated by coating after the blades 53 are formed. Consists of alert colors.

  In addition, the blade | wing 53 in which one part was comprised by the alert color may be one blade | wing 53 which comprises the centrifugal impeller 23 similarly to 1st Embodiment, and visual recognition of an alert color In order to improve the property, a part of each of the plurality of blades 53 constituting the centrifugal impeller 23 may be configured with a warning color.

  As described above, a part of the blade 53 is configured with a warning color different from the entire color of the centrifugal impeller 23, and thus the entire appearance of the centrifugal impeller 23 when the centrifugal impeller 23 rotates. Changes. That is, if the centrifugal impeller 23 is not rotated, a part of the blade 53 constituted by the alert color can be visually recognized. However, when the centrifugal impeller 23 is rotated, the alert color is changed to that of the centrifugal impeller 23. The overall color of the centrifugal impeller 23 may appear to include a warning color.

According to the air conditioner blower 20 of the present embodiment, the same effects as the above (3) and (4) and the following effects can be obtained.
(5) The effect according to the above (1) can be obtained. That is, in the air conditioner blower 20 in which the centrifugal impeller 23 is visible from the air suction port 21 a provided in the casing 21, a part of the centrifugal impeller 23 is a color of the entire centrifugal impeller 23. Consists of different alert colors. For this reason, it is possible to recognize that the centrifugal impeller 23 is rotating by visually recognizing the centrifugal impeller 23 in which the alert color is like the entire color. By visually recognizing a part of the constructed centrifugal impeller 23, it can be recognized that the centrifugal impeller 23 is stationary. Therefore, it is possible to recognize whether or not the centrifugal impeller 23 is rotating, and it is possible to call attention to a person who wants to put his hand into the casing 21. As a result, safety can be further improved.

  (6) The rotating blade is the centrifugal impeller 23, and a warning color is attached to at least one blade 53 constituting the centrifugal impeller 23, and further attached to at least the negative pressure surface 53q of the blade 53. It has been. Therefore, when the negative pressure surface 53q of the blade 53 constituting the centrifugal impeller 23 is inclined toward the air suction port 21a of the casing 21, the warning color is not applied to the entire surface of the blade 53. The visibility of the alert color can be improved effectively.

  (7) Attention color is attached to at least one blade 53 constituting the centrifugal impeller 23, and is further attached to at least the rotation center side edge 53 b of the blade 53. Accordingly, since the centrifugal impeller 23 blows air from the rotation center side to the rotation centrifugal side, when the air suction port 21 a corresponding to the rotation center of the centrifugal impeller 23 is provided in the casing 21, an attention calling color. Can be effectively improved without attaching to the entire surface of the blade 53.

  Moreover, since the indoor unit 2 of the air conditioning apparatus of the present embodiment includes the air conditioner blower 20 that can obtain the effects (5) to (7) and the like, (5) to (7 ) And the like can be obtained.

(Third embodiment)
As shown in FIG. 10, the outdoor unit 3 of the air conditioning apparatus according to the present embodiment is a vertically installed outdoor unit, and the outdoor unit 3 includes a casing 31 that is a casing of the outdoor unit 3, and a casing 31. And an impeller 33 disposed on the downstream side of the heat exchanger 32 in the air flow direction.

  The outdoor unit 3 includes an electric motor 34 that drives the impeller 33, a bell mouth 35 for smoothly flowing air into the impeller 33, and a lattice member 36 that covers the opening of the bell mouth 35. .

  The metal casing 31 has an air inlet 31a that is a space for sucking air from the outside to the inside of the casing 31, and an air outlet 31b that is a space for blowing air from the inside of the casing 31 to the outside. is doing. An air inlet 31 a which is an opening provided in the casing 31 is provided on the rear side of the casing 31, and an air outlet 31 b as an opening provided in the casing 31 is provided on the front side of the casing 31. .

  As described above, the air outlet 31b is provided on the front side of the impeller 33, and the air outlet 31b corresponds to the impeller 33 and the rotation center. Therefore, although the lattice member 36 which covers the opening of the bell mouth 35 is provided in the air outlet 31b, the impeller 33 accommodated in the casing 31 can be visually recognized from the air outlet 31b.

  The heat exchanger 32 is provided so as to cover the rear side (suction side) of the impeller 33, and the air sucked into the casing 31 from the air suction port 31 a passes through the heat exchanger 32. The conditioned air is cooled or heated, and this conditioned air is blown out of the casing 31 from the air outlet 31 b by the impeller 33.

  The impeller 33 is a rotary blade used for a propeller fan. That is, the air conditioner blower 30 according to the present embodiment is an axial fan (propeller fan) that blows gas to the outside of the casing 31, and stores the impeller 33 and the impeller 33, and the air flow. A casing 31 forming a path, a bell mouth 35, and an electric motor 34 for driving an impeller 33 are configured.

  As shown in FIGS. 11 and 12, the impeller 33 includes a hub 61 to which the output shaft of the electric motor 34 is attached, and a blade 62 formed integrally with the hub 61. FIG. 11 is a view of the impeller 33 as viewed from the opening direction of the casing 31 (that is, the front side).

  The hub 61 is a cylindrical member made of resin, and is a central portion of the impeller 33 to which the output shaft of the electric motor 34 is attached. A plurality of blades 62 are provided on the side surface of the hub 61. Since the output shaft of the electric motor 34 is connected to the center of the hub 61, the blade 62 is rotated together with the hub 61 when the electric motor 34 is driven.

  The blades 62 are resin blades, and a plurality of blades 62 are arranged along the direction in which the impeller 33 rotates so as to be inclined with respect to the axial direction A. As shown in FIGS. 13 and 14, each blade 62 constituting the impeller 33 includes a front edge portion 62 a that is an edge portion provided on the rotation direction side of the impeller 33, and a reverse rotation direction side of the impeller 13 ( And a rear edge 62b which is an edge provided on the opposite side of the rotation direction.

  In addition, the blade 62 has a pressure surface (positive pressure surface) 62p, which is a surface where pressure increases when the stationary impeller 33 rotates, and a stationary impeller 33 rotates. It has the negative pressure surface 62q which is a surface where a pressure becomes small. The blades 62 blow air to the outside of the casing 31 through the pressure surface 62p.

  In the impeller 33 in which the blades 62 are disposed so as to blow air to the outside of the casing 31, the pressure surface 62p faces the opening direction (that is, the front side) of the casing 31, and the negative pressure surface 62q faces the rear side. Further, an impeller 33 is provided inside the casing 31. Accordingly, when the impeller 13 is viewed from the air outlet 31b, the pressure surface 62p of the blade 62 is visible.

  Further, in the impeller 33 in which the blade 62 blows air to the outside of the casing 31, the front edge portion 62a is provided on the upstream side in the air flow direction compared to the rear edge portion 62b, and the rear edge portion 62b is Compared to the front edge portion 62a, it is provided on the downstream side in the air flow direction. Therefore, the rear edge 62b is provided closer to the air outlet 31b of the casing 31 than the front edge 62a.

  The electric motor 34 is a fan motor that drives the impeller 33, and is provided on the rear side of the hub 61 as shown in FIG. 10. The bell mouth 35 has a trumpet-shaped opening, and the bell mouth 35 is provided on the rotating centrifugal side of the impeller 33 so that air can easily flow out of the impeller 33. The lattice member 36 is a metal fan guard provided for the purpose of protecting the impeller 33 and the like, and is provided so as to cover the air outlet 31b.

  As described above, the air conditioner blower 30 according to the present embodiment includes the impeller 33 having the plurality of blades 62 and the casing 31 that houses the impeller 33, and the air blower provided in the casing 31. The impeller 33 is configured to be visible from the outlet 31b.

  Since the lattice member 36 is provided at the air outlet 31b, the air blower outlet 31b is configured to prevent the hands from entering the inside of the casing 31. However, when the lattice member 36 is removed, the air outlet 31b is moved to the inside of the casing 31. It becomes possible to put a hand. Since the impeller 33 is visible from the air outlet 31b, a person trying to put a hand into the casing 31 can visually determine whether the impeller 33 is rotating, When the impeller 33 is formed in a single color and it is difficult to see the impeller 33 housed in the casing 31, it is difficult to recognize whether the impeller 33 is rotating.

  Therefore, also in the present embodiment, a part of the impeller 33 is configured with a warning color different from the entire color of the impeller 33. Specifically, in the blades 62 constituting the impeller 33, the surface portion of the portion surrounded by the broken line B3 shown in FIGS. 11 to 14 is a single color for alerting and is surrounded by the broken line B3. The surface portion excluding the part is composed of another color different from the alert color. Since the area of the surface portion of the portion surrounded by the broken line B3 is smaller than the area of the surface portion excluding the portion surrounded by the broken line B3, the color of the surface portion excluding the portion surrounded by the broken line B3 is impeller 33. It has become the whole color. In addition, the hub 61 which comprises the impeller 33 is the same color as the surface part except the location shown enclosed with the broken line B3, Comprising: It is comprised by another one color different from an alerting color.

  As the overall color of the impeller 33, as in the first and second embodiments, an inconspicuous color such as black or gray is used, and the alert color is the same as in the first and second embodiments. In addition, a conspicuous color can be used as compared with the entire color of the impeller 33. Also in the present embodiment, the alert color is configured with a bright warning color for the entire color of the impeller 33.

  Further, in the present embodiment, a part of the impeller 33 configured by the alert color is in the vicinity of the rear edge 62b of the blade 62, and the rear edge 62b of the pressure surface 62p is mainly alerted to the blade 62. Is attached. That is, the rear edge portion 62b including a part of the pressure surface 62p of the blade 62 is configured with a warning color.

  The alert color is applied by painting as in the first and second embodiments. Specifically, the alert color is colored and attached to a part of the impeller 33 by coating the alert color in the vicinity of the rear edge 62b of the blade 62. That is, all of the hub 61 and the blades 62 constituting the impeller 33 are formed of the same color resin, and a part of the blades 62 is configured with a warning color by painting after forming the blades 62.

  In addition, the blade | wing 62 which one part was comprised by the alert color may be the 1 blade | wing 62 which comprises the impeller 33 similarly to 1st and 2nd embodiment. In order to improve the visibility, a part of each of the plurality of blades 62 constituting the impeller 33 may be configured with a warning color.

  As described above, a part of the blade 62 is configured with a warning color different from the entire color of the impeller 33. Therefore, if the blade wheel 33 is not rotated, the blade 62 configured with the warning color Although a part can be visually confirmed, when the impeller 33 rotates, the alert color appears to be the entire color of the impeller 33, or the alert color appears to be included in the overall color of the impeller 33. To do.

According to the air conditioner blower 30 of the present embodiment, the same effects as the above (3) and (4) and the following effects can be obtained.
(8) The effect according to the above (1) or (5) can be obtained. That is, in the air conditioner blower 30 in which the impeller 33 is visible from the air outlet 31 b provided in the casing 31, a part of the impeller 33 has a warning color different from the entire color of the impeller 33. It is configured. For this reason, it is possible to recognize that the impeller 33 is rotating, for example, by visually recognizing the impeller 33 in which the alert color is like the entire color, and the impeller configured by the alert color. By visually recognizing part of the car 33, it can be recognized that the impeller 33 is stationary. Therefore, it can be recognized whether or not the impeller 33 is rotating, and a person who wants to put his hand into the casing 31 can be alerted. As a result, safety can be further improved.

  (9) The rotating blade is an impeller 33 used for a propeller fan, and a warning color is attached to at least one blade 62 constituting the impeller 33, and further, at least on the pressure surface 62p of the blade 62 It is attached. Accordingly, when the blade 62 blows gas to the outside of the casing 31, the pressure surface 62 p is provided toward the outside of the casing 31, so that the attention calling color is not applied to the entire surface of the blade 62. Can be effectively improved.

  (10) The alert color is attached to at least one blade 62 constituting the impeller 33, and is further attached to at least the rear edge 62 b of the blade 62. Accordingly, when the blade 62 blows gas to the outside of the casing 31, the rear edge 62b is closer to the air outlet 31b that is the opening of the casing 31 than the front edge 62a. Compared with the case where only the alert color is attached, the visibility of the alert color can be effectively improved.

  Moreover, since the outdoor unit 3 of the air conditioning apparatus which concerns on this embodiment is equipped with the air blower 30 which can acquire effects, such as said (8)-(10), it is with said (8)-(10) etc. Similar effects can be obtained.

  The present invention is not limited to the above-described embodiments, and various design changes can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention. For example, you may change the said embodiment as follows.

  -In the said 1st Embodiment, although the alerting color was given to a part of blade | wing 43, if not giving an alerting color to all the blades 43, at least 1 which comprises the impeller 13 With the exception of the blades 43, a warning color may be applied to the entire surface of the blades 43 constituting the impeller 13.

  According to such a configuration, the rotating blade is an impeller 13 used for a cross flow fan, and at least one blade 43 is excluded, and a warning color is applied to the entire surface of the blade 43 constituting the impeller 13. Therefore, the visibility of the alert color can be reliably improved as compared with the case where the alert color is attached only to the outer peripheral edge 43a.

  In the second embodiment, the rotating blade is the centrifugal impeller 23, and the alert color is attached to the rotation center side edge 53b including a part of the suction surface 53q of the blade 53. However, the alert color may be attached to a part of the surface of the hub 51 facing the air suction port 21 a provided in the casing 21. That is, for example, the surface portion of the portion surrounded by the broken line B4 shown in FIG. 6 is a single color of alert color, and the surface portion other than the portion surrounded by the broken line B4 is different from the alert color. You may be comprised by one color.

  According to such a configuration, the rotary blade is the centrifugal impeller 23, and a warning color is attached to a part of the surface of the hub 51. For this reason, even if it is difficult to visually recognize the blades 53 of the centrifugal impeller 23 from the air suction port 21 a of the casing 21, the attention color is given to the blades 53 by visually recognizing the hub 51 of the centrifugal impeller 23. Without attaching, it is possible to recognize whether or not the centrifugal impeller 23 is rotating.

  -In the said 2nd Embodiment, although the alerting color was given to some blade | wings 53, if not giving the alerting color to all the blades 53, at least the centrifugal impeller 23 is comprised. With the exception of one blade 53, a warning color may be applied to the entire surface of the blade 53 constituting the centrifugal impeller 23.

  In the third embodiment, the alert color is attached to the rear edge 62b including a part of the pressure surface 62p of the blade 62. However, the alert color is applied to the entire pressure surface 62p. It may be. According to such a configuration, it is possible to reliably improve the visibility of the alert color.

  -In the said 3rd Embodiment, although the alert color was given to some blade | wings 62, if not giving the alert color to all the blades 62, at least 1 which comprises the impeller 33 With the exception of the blades 62, a warning color may be applied to the entire surface of the blades 62 constituting the impeller 33.

  -The surface portion to which the attention calling color is attached is not limited to the above embodiments, and if a part of the rotary blade configured by the attention calling color is visible from the opening provided in the casing, You may change suitably the part to which a caution color is attached.

  The fluorescent color may be used as the alert color that is colored on a part of the rotary blade by applying the paint. In such a case, a fluorescent color as a warning color can be colored and applied to a part of the rotary blade by applying a fluorescent paint. According to such a configuration, the alert color can be made more conspicuous inside the casing.

  -The alert color may be attached to a part of the rotating blade by applying the alert color tape. According to such a configuration, the alert color is attached to a part of the rotating blade by attaching the tape of the alert color, so that the alert color is easily attached to a part of the rotating blade. Can do.

  The attention calling color may be attached to a part of the rotary blade by injection molding using the resin material of the attention calling color. According to such a configuration, since the rotary blade is formed by two-color molding of the entire color (for example, black) and a warning color (for example, yellow), the warning color is attached simultaneously with the molding of the rotary blade. be able to.

  DESCRIPTION OF SYMBOLS 1, 2 ... Indoor unit, 3 ... Outdoor unit, 10, 20, 30 ... Blower, 11, 21, 31 ... Casing, 11a, 21a, 31a ... Air inlet (opening), 11b, 21b, 31b ... Air inlet (Opening), 11c ... vertical blade, 11d ... horizontal blade, 21A ... casing body, 21B ... decorative panel, 12, 22, 32 ... heat exchanger, 13, 23, 33 ... impeller (rotary blade), 24, 34 ... Electric motor, 25, 35 ... Bell mouth, 26, 36 ... Lattice member, 27 ... Drain pan, 41 ... Support plate, 41a ... Shaft part, 42 ... Support member, 43 ... Blade, 43a ... Outer edge, 43b ... Inside Circumferential edge, 43p ... pressure surface, 43q ... negative pressure surface, 51 ... hub, 52 ... main plate, 53 ... vane, 53a ... rotating centrifugal side edge, 53b ... rotation center side edge, 53p ... pressure surface, 53q ... Suction surface, 54 ... shroud 61 ... Hub 62 ... blade, 62a ... front edge, 62b ... rear edge, 62p ... pressure surface, 62q ... suction surface.

Claims (14)

In a blower for an air conditioner comprising a rotary blade having a plurality of blades and a casing for storing the rotary blade, wherein the rotary blade is visible from an opening provided in the casing.
A blower for an air conditioner, wherein a part of the rotary blade is configured with a caution color different from the entire color of the rotary blade. The rotary blade is an impeller used in a cross flow fan in which gas crosses perpendicularly to a rotation axis,
The blades constituting the impeller have an outer peripheral side edge that is an edge provided on the rotary centrifugal side of the impeller,
The air conditioning according to claim 1, wherein the alert color is attached to at least one of the blades constituting the impeller, and further attached to at least the outer peripheral side edge of the blade. Blower for equipment. The rotary blade is an impeller used in a cross flow fan in which gas crosses perpendicularly to a rotation axis,
2. The air conditioner according to claim 1, wherein the alert color is attached to the entire surface of the blades constituting the impeller, except for at least one of the blades constituting the impeller. Blower. The rotary blade is a centrifugal impeller,
The blades constituting the centrifugal impeller have a pressure surface facing the rotational centrifugal side of the centrifugal impeller and a negative pressure surface facing the rotational center side of the centrifugal impeller.
2. The air conditioner according to claim 1, wherein the alert color is attached to at least one of the blades constituting the centrifugal impeller, and further attached to at least the suction surface of the blade. Blower for equipment. The rotary blade is a centrifugal impeller,
The blades constituting the centrifugal impeller have a rotation center side edge that is an edge provided on the rotation center side of the centrifugal impeller,
The said alert color is attached | subjected to the at least 1 said blade | wing which comprises the said centrifugal impeller, and also is attached | subjected to the at least said rotation center side edge of the blade | wing. Item 5. A blower for an air conditioner according to Item 4. The rotary blade is a centrifugal impeller,
The centrifugal impeller has a hub that is fixed to a rotary drive shaft that drives the centrifugal impeller and is provided with the blades.
The said alert color is attached to a part of surface of the said hub facing the opening provided in the said casing. The one of Claim 1, 4, and 5 characterized by the above-mentioned. Blower for air conditioner. The rotating blade is an impeller used for a propeller fan,
The blades constituting the impeller have a pressure surface for blowing gas to the outside of the casing,
The air conditioning apparatus according to claim 1, wherein the alert color is attached to at least one of the blades constituting the impeller, and further attached to at least the pressure surface of the blade. Blower. The rotating blade is an impeller used for a propeller fan,
The blades constituting the impeller blow gas to the outside of the casing, and include a front edge portion which is an edge portion on the rotation direction side of the impeller and an edge portion on the reverse rotation direction side of the impeller. Having a certain trailing edge,
The said alert color is attached to at least one said blade | wing which comprises the said impeller, and also is attached to at least the said rear edge part of the blade | wing. Blower for air conditioner.   The blower for an air conditioner according to any one of claims 1 to 8, wherein the alert color is a bright warning color with respect to the entire color of the rotary blades.   The said attention calling color is colored and attached to a part of the said rotary blade by the paint of the warning calling color being painted, The any one of Claim 1 thru | or 9 characterized by the above-mentioned. A blower for an air conditioner described in 1.   The air according to any one of claims 1 to 9, wherein the alert color is attached to a part of the rotary blade by applying a tape of the alert color. Blower for harmony device.   10. The caution color is attached to a part of the rotating blade by injection molding using a resin material of the caution color. A blower for an air conditioner described in the paragraph.   An air conditioner indoor unit comprising the air conditioner blower according to any one of claims 1 to 12.   An air conditioner outdoor unit comprising the air conditioner blower according to any one of claims 1 to 12.

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