WO2019171626A1 - Indoor unit for air conditioner - Google Patents

Indoor unit for air conditioner Download PDF

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Publication number
WO2019171626A1
WO2019171626A1 PCT/JP2018/032241 JP2018032241W WO2019171626A1 WO 2019171626 A1 WO2019171626 A1 WO 2019171626A1 JP 2018032241 W JP2018032241 W JP 2018032241W WO 2019171626 A1 WO2019171626 A1 WO 2019171626A1
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WO
WIPO (PCT)
Prior art keywords
bearing
casing
impeller
indoor unit
annular
Prior art date
Application number
PCT/JP2018/032241
Other languages
French (fr)
Japanese (ja)
Inventor
政貴 川村
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP2020504652A priority Critical patent/JP7055192B2/en
Publication of WO2019171626A1 publication Critical patent/WO2019171626A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station

Definitions

  • the present invention relates to an indoor unit of an air conditioner equipped with a blower.
  • indoor units of conventional air conditioners are composed of a sirocco fan, for example, to enhance the air conditioning function and the like as disclosed in Patent Document 1.
  • a plurality of blowers are provided.
  • the above blower includes an impeller and a casing that covers the impeller.
  • the casing is provided with a suction portion that opens to the side in the shaft (rotation axis) direction of the impeller and a discharge portion that opens in a direction orthogonal to the shaft.
  • the blower configured as described above sucks air from the suction portion and blows out the sucked air from the discharge portion.
  • Patent Document 1 discloses the following two structures as the structure of the bearing that supports the end of the shaft of the impeller.
  • a shaft support portion as a bearing is provided at substantially the center of a shaft support pedestal portion provided so as to pass through the center of the suction portion (FIG. 3 of Patent Document 1).
  • the shaft support portion and the shaft support pedestal portion are integrally formed with the casing.
  • the shaft support portion is provided on a shaft support pedestal portion made of a member different from the casing.
  • the shaft support pedestal portion is fixed to the casing by fastening means such as locking by a claw (FIG. 9 of Patent Document 1) and screws.
  • JP 2013-142502 Japanese Patent Publication “JP 2013-142502 (published July 22, 2013)”
  • the shaft support portion is formed integrally with the casing, the rotation center of the impeller and the center of the bearing can be easily matched.
  • the first structure has poor maintainability because the shaft support is integrally formed with the casing. Specifically, when removing the impeller from the casing for maintenance, it is necessary to remove the impeller from the motor and shift the impeller to the motor side to pull out the shaft from the shaft support portion.
  • the shaft support pedestal is detachably attached to the casing.
  • a shaft support base part is removed from a casing
  • a shaft support part can be removed from the shaft of an impeller. Therefore, the impeller can be removed from the casing while being connected to the motor.
  • the second structure is superior to the first structure in maintainability.
  • the shaft support pedestal is detachably attached to the casing, a deviation occurs between the rotation center of the impeller and the center of the bearing. This is because a minute margin is provided in the structure for fastening the casing and the shaft support base. Specifically, in the case of locking by a claw, a hole provided in the shaft support base portion for allowing a claw provided in the casing to pass is formed larger than the claw. Moreover, when the screw passed through the hole provided in the shaft support base is fastened to the female screw provided in the casing, the hole is formed larger than the diameter of the screw.
  • An object of one aspect of the present invention is to achieve both good maintainability and coincidence of the impeller and bearing shafts.
  • an indoor unit of an air conditioner includes an impeller, a casing that covers the impeller, and a bearing portion that rotatably supports one end of a rotation shaft of the impeller.
  • a suction part for sucking air that opens to both ends of the rotary shaft is formed in the casing, and the bearing part is an annular part formed in an annular shape, A bearing that rotatably supports one end of the rotating shaft, and the annular portion is fitted around the suction portion of the casing by rotating around the center of the bearing.
  • FIG. 1 It is a perspective view which shows the external appearance of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows the internal structure of the said indoor unit.
  • (A) is a side view of the indoor unit in a stopped state
  • (b) is a side view of the indoor unit in an air conditioning mode and cooling setting operation state
  • (c) is an air cleaning mode and cooling setting.
  • FIG. 1 It is a partial expanded sectional view which shows the combined state of the said casing and the bearing part in the said air blower. It is a disassembled perspective view which shows the structure of the said bearing part.
  • (A) to (c) are a top view, a side view, and a bottom view showing the configuration of the bearing holder in the bearing portion, respectively. It is a perspective view which shows the external appearance of the said bearing part.
  • (A)-(c) is a perspective view of a blower showing a procedure for attaching the bearing portion to the casing in the blower according to the first and third embodiments. It is a perspective view which shows the external appearance of the air blower concerning Embodiment 2 and 3 of this invention.
  • Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. 1 to 10 as follows.
  • FIG. 1 is a perspective view showing an appearance of an indoor unit (hereinafter simply referred to as an indoor unit) 1 of an air conditioner according to the present embodiment.
  • FIG. 2 is a longitudinal sectional view showing the internal structure of the indoor unit 1.
  • the indoor unit 1 includes a main body 2 and an air guide plate 3.
  • the air guide plate 3 is provided on the front surface of the main body 2.
  • a first suction port 21 is formed in the upper part of the main body 2
  • a second suction port 22 is formed in the lower part of the main body 2.
  • a blower 4 and a heat exchanger 5 are provided inside the main body 2.
  • an air outlet 23 is formed in the front portion of the main body 2.
  • a first filter 24 is provided on the inner side (lower side) of the first suction port 21, and a second filter 25 is provided on the inner side (upper side) of the second suction port 12.
  • the first filter 24 is a filter having a function corresponding to, for example, a prefilter.
  • the first filter 24 has a lower performance than the second filter 25 and has a lower ventilation resistance than the second filter 25.
  • the second filter 25 is, for example, a HEPA filter (High Efficiency Particulate Air Filter).
  • the second filter 25 is a filter that has higher performance than the first filter 24 and has a larger ventilation resistance than the first filter 24.
  • the air sucked from the first suction port 21 is blown out from the outlet 23 through the first filter 24, the blower 4 and the heat exchanger 5. Further, the air sucked from the second suction port 22 is blown out from the blower outlet 23 through the second filter 25, the blower 4 and the heat exchanger 5.
  • FIG. 3A is a side view of the indoor unit 1 in a stopped state.
  • FIG. 3B is a side view of the indoor unit 1 in the operation state of the air conditioning mode and the cooling setting.
  • FIG. 3C is a side view of the indoor unit 1 in the operation state of the air cleaning mode and the cooling setting.
  • the opening / closing lid 26 is closed when the operation of the indoor unit 1 is stopped, as shown in FIG. Further, as shown in FIG. 3B, the opening / closing lid 26 is opened when the indoor unit 1 is operated with priority on the air conditioning function over the air cleaning function (in the air conditioning mode). Furthermore, as shown in FIG. 3C, the opening / closing lid 26 is closed when the indoor unit 1 is operated with priority on the air cleaning function over the air conditioning function (in the air cleaning mode).
  • the heat exchanger 5 is connected to two heat exchangers arranged one above the other, and the connecting portion protrudes forward.
  • FIG. 4 is a cross-sectional view showing a state where the motor 6 and the blower 4 built in the indoor unit 1 are combined.
  • FIG. 5 is a perspective view showing the impeller 7 and the casing 8 in the blower 4.
  • FIG. 6 is a partially enlarged cross-sectional view showing a coupling state of the casing 8 and the bearing portion 9.
  • FIG. 7 is an exploded perspective view showing the configuration of the bearing portion 9.
  • FIGS. 8A to 8C are a top view, a side view, and a bottom view showing the bearing holder 91 in the bearing portion 9, respectively.
  • FIG. 9 is a perspective view showing the appearance of the bearing portion 9.
  • a motor 6 is provided inside the main body 2.
  • Two fans 4 are arranged on both sides of the motor 6.
  • the motor 6 has a main body 61, and rotates the two impellers 7 of the blower 4 by rotating the two drive shafts 62 projecting on both sides of the main body 61.
  • the blower 4 is a sirocco fan, for example, and includes an impeller 7, a casing 8, and a bearing portion 9.
  • the impeller 7 is configured by arranging a large number of wings in a cylindrical shape.
  • the impeller 7 has a hollow shaft 71 (rotating shaft) provided at the center of rotation.
  • the drive shaft 62 of the motor 6 is coupled to the shaft 71 by being fitted into the end portion of the shaft 71 on the motor 6 side.
  • An extension shaft 72 (rotating shaft) is connected to the end of the shaft 71 on the motor 6 side.
  • the two drive shafts 62 of the motor 6 and the shafts 71 and the extension shafts 72 of the two blowers 4 are provided coaxially.
  • the casing 8 is an exterior body that covers the impeller 7 and is formed of resin.
  • the casing 8 is formed so that the outer diameter gradually increases in a spiral curve shape.
  • the casing 8 is configured by joining an upper portion 81 and a lower portion 82 so that the casing 8 can be divided into two.
  • Suction portions 83 for sucking air are formed on both side surfaces of the casing 8 so as to open in a circular shape on both end sides of the shaft 71.
  • a step part 84 (convex part) formed in an annular shape over the entire circumference is provided.
  • the step portion 84 is configured in two steps, but the number of steps is not limited to two and may be one.
  • the stepped portion 84 is provided with a plurality of (for example, three) protruding portions 85 at intervals.
  • the protruding portion 85 is formed so as to protrude from the step portion 84 toward the outside of the step portion 84.
  • the protruding portion 85 has a reinforcing portion 85a and a wide portion 85b.
  • the reinforcing portion 85 a is provided at both ends of the protruding portion 85.
  • the reinforcing portion 85a has a thickness and height sufficient to reinforce the protruding portion 85.
  • the wide portion 85b is a thin portion provided between the reinforcing portions 85a.
  • the inner surface 85 c that faces the side surface 8 a of the casing 8 in the protruding portion 85 and the side surface 8 a of the casing 8 form a facing surface portion 10 that faces the space 8.
  • the step portion 84 is provided with a protrusion 86.
  • the protrusion 86 is provided at the lowest end of the first step (the next highest surface after the side surface 8 a) of the stepped portion 84, and is formed so as to protrude from the side surface of the second step of the stepped portion 84.
  • the protrusion 86 is a portion where a lock portion 914 of the bearing holder 91 described later is locked.
  • the position at which the protrusion 86 is provided is not limited to the lowermost end of the stepped portion 84, but since the operation of releasing the locking of the lock portion 914 with respect to the protrusion 86 is performed from below, it may be below the stepped portion 84. desirable.
  • a part of the casing 8 facing the blades of the impeller 7 is formed so that a blowout part 87 is opened.
  • the bearing portion 9 is a portion that rotatably supports the extension shaft 72 of the impeller 7. As shown also in FIG. 7, the bearing portion 9 includes a bearing holder 91, a bearing 92, a cushion 93, and a bearing cover 94.
  • the bearing holder 91 is a portion that rotatably supports one end (extension shaft 72) of the shaft 71 of the impeller 7, and is formed of resin.
  • the bearing holder 91 includes an annular portion 911, a bearing arrangement portion 912, a plurality of support legs 913 (leg portions), and a lock portion 914, as shown in FIGS. (Fixed state maintaining unit). In FIGS. 8A to 8C, the lock portion 914 is not shown.
  • the annular portion 911 is a portion attached to the casing 8 and is formed in an annular shape.
  • the annular part 911 has a thick part 911a, a notch part 911b, and a thin part 911c. Further, the annular portion 911 fits into the stepped portion 84 of the casing 8 at the inner peripheral portion thereof.
  • the annular portion 911 may be fitted to the stepped portion 84 of the casing 8 at the outer peripheral portion thereof. In this structure, a part of the flat side surface 8 a that can contact the bottom surface of the annular portion 911 exists between the inner peripheral surface of the step portion 84 and the suction portion 83.
  • the thick part 911a is the thickest part in the annular part 911.
  • the notch portion 911b is formed so as to open to the inner peripheral side of the annular portion 911. Further, the notch portions 911b are larger than the projecting portions 85, the same number as the projecting portions 85, and the same as the projecting portions 85 so that the annular portion 911 surrounds the projecting portion 85 in a state where the annular portion 911 is disposed on the side surface 8a of the casing 8. It is formed at an arrangement interval. In the structure in which the annular portion 911 is fitted to the stepped portion 84 of the casing 8 at the outer peripheral portion thereof, the notch portion 911b is provided on the outer peripheral side of the annular portion 911 because the facing surface portion 10 is open to the suction portion 83 side. Formed to open.
  • the thin part 911c is formed between the thick part 911a and the notch part 911b.
  • the thin portion 911c is a portion that is thinner than the thick portion 911a, and is formed so that the thickness gradually decreases from the end portion on the thick portion 911a side to the end portion on the notch portion 911b side.
  • the portion near the thick portion 911 a in the thin portion 911 c is press-fitted between the inner surface 85 c and the side surface 8 a of the protruding portion 85, so that it is between the inner surface 85 c and the side surface 8 a. It is formed slightly thicker than the interval.
  • the bearing arrangement part 912 is a part for arranging the cushion 93 containing the bearing 92 at a predetermined position.
  • the bearing arrangement portion 912 is formed in a short cylindrical shape, and the side far from the casing 8 is open. Further, as shown in FIG. 8C, the bearing arrangement portion 912 is formed with a through hole 912 a for passing the extension shaft 72 in the center on the side close to the casing 8 (the bottom side of the bearing portion 9). .
  • the bearing arrangement portion 912 has the same center as the annular portion 911.
  • a plurality of protrusions 912b are provided on the outer peripheral surface of the bearing arrangement portion 912 at intervals.
  • the support leg portion 913 is a portion that supports the bearing arrangement portion 912 on the annular portion 911.
  • the support leg portions 913 are formed so as to extend radially from the spaced positions on the outer peripheral surface of the bearing arrangement portion 912 and to be connected to the spaced positions in the annular portion 911. Further, the support leg portion 913 is formed in an arc shape that gently curves in a convex shape toward the outside, thereby increasing the strength for supporting the bearing arrangement portion 912.
  • the lock part 914 is provided on the outer peripheral surface of the bearing arrangement part 912.
  • the lock portion 914 is formed so as to be locked to the protrusion 86 of the casing 8 and its end portion reaches the annular portion 911.
  • the lock portion 914 is locked to the protrusion 86, thereby maintaining the fixed state of the bearing portion 9 with respect to the casing 8 in which the thin portion 911 c is fitted into the facing surface portion 10.
  • the lock part 914 has the movable part 914a and the finger pad part 914b.
  • the movable portion 914a is arranged so as to protrude from the outer peripheral surface of the bearing arrangement portion 912.
  • the movable portion 914a is a portion formed in a flat plate shape having a surface perpendicular to the axial direction of the shaft 71 of the impeller 7, and has flexibility.
  • the finger contact portion 914b is formed so as to protrude further outward from the annular portion 911 so that the finger can be easily applied.
  • the bearing 92 rotatably supports the extension shaft 72 of the impeller 7.
  • the bearing 92 is, for example, a tapered roller bearing, and is formed of a resin such as a polyslider.
  • the cushion 93 is held so as to wrap around the outer peripheral surface of the bearing 92.
  • the cushion 93 is made of an elastic material such as rubber.
  • the bearing cover 94 is a portion that covers the cushion 93 that encloses the bearing 92 and that holds the bearing 92 in the bearing arrangement portion 912, and is formed of resin.
  • On the outer peripheral surface of the bearing cover 94 a plurality of locking portions 94 a that are locked to the protrusions 912 b of the bearing arrangement portion 912 are provided.
  • the locking portion 94a has a U shape, and is locked to the protrusion 912b at a bent portion.
  • the bearing cover 94 is fixed to the bearing arrangement portion 912 by the locking portion 94a being locked to the protrusion 912b.
  • FIGS. 10A to 10C are perspective views of the blower 4 showing the procedure for attaching the bearing portion 9 to the casing 8.
  • the impeller 7 is built in the casing 8 as shown in FIG.
  • the annular portion 911 of the bearing holder 91 faces the side surface 8a of the casing 8
  • the notch portion 911b faces the protruding portion 85.
  • the notch portion 911b is fitted to the protruding portion 85, the annular portion 911 is brought into contact with the side surface 8a, and the tip of the shaft 71, that is, the extension shaft 72 is supported by the bearing. Insert into 92. And the thin part 911c is made to approach between the protrusion part 85 and the side surface 8a by rotating the bearing part 9 around the center of the bearing 92 in the direction shown by the arrow in FIG.
  • the thin portion 911c becomes the facing surface portion. 10 fits.
  • the bearing portion 9 is fitted around the suction portion 83 in the casing 8.
  • the lock portion 914 gets over the projection 86 as the bearing portion 9 rotates, and is locked to the projection 86 in a state where the thin portion 911 c is fitted into the facing surface portion 10. In this way, the blower 4 is completed.
  • the user When removing the bearing portion 9 from the casing 8, the user lifts the lock portion 914 so that the finger rests on the finger contact portion 914 of the lock portion 914 and separates it from the annular portion 911, and the direction opposite to that when fixed The bearing 9 is rotated.
  • the bearing portion 9 is separated from the casing 8.
  • the impeller 7 can be removed from the casing 8 by removing the lower part 82 of the casing 8 from the upper part 81.
  • the blower 4 has the bearing portion 9 that can be attached to and detached from the casing 8.
  • the annular portion 911 of the bearing portion 9 is fitted around the suction portion 83 in the casing 8 by rotating around the center of the bearing 92.
  • the bearing portion 9 has a thick portion 911a and thin portions 911c that are thinner than the thick portion 911a at a plurality of locations, and the thin portion 911c is rotated by rotating around the center of the bearing 92.
  • the casing 8 is fitted into the facing surface portion 10 provided around the suction portion 83.
  • the impeller 7 when removing the impeller 7 from the casing 8, it is not necessary to pull out the shaft 71 of the impeller 7 from the bearing 92. Therefore, the impeller 7 can be removed while being connected to the motor 6. Further, since the bearing portion 9 is fixed to the casing 8 without rattling, the shaft center of the bearing 92 can be made to coincide with the shaft center of the impeller 7 that is correctly arranged in the casing 8. Therefore, it is possible to achieve both good maintainability and coincidence of the shaft centers of the impeller 7 and the bearing 92.
  • the structure in which the bearing portion 9 is fitted into the casing 8 by rotating around the center of the bearing 92 is not limited to the structure described above.
  • an internal thread is formed on the inner peripheral surface of the annular portion 911, and a male screw is formed on the outer peripheral surface of the stepped portion 84, so that the annular portion 911 is screwed into the stepped portion 84. Also good.
  • blower 4 includes one set of the lock portion 914 and the protrusion 86 .
  • the blower 4 is not limited to one set, and may include a plurality of sets of lock portions 914 and protrusions 86.
  • the bearing portion 9 can be firmly fixed to the casing 8, and the shaft centers of the impeller 7 and the bearing 92 can be aligned more accurately.
  • the lock part 914 maintains the fixed state with respect to the casing 8 of the bearing part 9 in which the thin part 911c fits into the facing surface part 10. Thereby, it is possible to prevent loose fitting of the bearing portion 9 into the casing 8 due to vibration caused by the rotation of the impeller 7.
  • the annular portion 911 is fitted to the stepped portion 84 (convex portion) formed in an annular shape at the inner peripheral portion or the outer peripheral portion thereof. Thereby, the annular part 911 can be easily rotated along the step part 84.
  • the bearing 92 is disposed outside the impeller 7 in the direction of the shaft 71. Thereby, it can suppress that the bearing 92 reduces the efficiency of the suction of the air in the suction part 83 of the casing 8.
  • FIG. 11 is a perspective view showing an appearance of the blower 4A according to the present embodiment.
  • the fan 4A shown in FIG. 11 is built in the indoor unit 1 (see FIG. 2), similarly to the fan 4 of the first embodiment.
  • the blower 4A has an impeller 7, a casing 8A, and a bearing portion 9A.
  • the casing 8A is configured in the same way as the casing 8 except that the protrusion 86 is not provided on the stepped portion 84.
  • the bearing portion 9A is configured in the same manner as the bearing portion 9 except that the bearing holder 91 is not provided with the lock portion 914.
  • the bearing portion 9A can be fixed to the casing 8A with a screw 11 (fixed state maintaining portion).
  • the position at which the screw 11 is fastened is not limited to the lowermost end of the casing 8A. However, since the fastening and releasing operations of the screw 11 are performed from below, it is desirable to be on the lower side of the casing 8A.
  • the bearing 9A is fixed to the casing 8A with the screw 11 in a state where the bearing 9A is fitted in the casing 8A.
  • the fixed state with respect to the casing 8 of the bearing part 9 with which the thin part 911c was fitted in the opposing surface part 10 is maintained.
  • it can prevent that 9 A of bearing parts rotate in the reverse direction at the time of attachment to the casing 8A. Therefore, it is possible to prevent loosening of the fitting of the bearing portion 9 into the casing 8 due to vibration caused by the rotation of the impeller 7.
  • Embodiment 3 of the present invention will be described below with reference to FIGS. 10 and 11.
  • components having the same functions as those described in the first and second embodiments are given the same reference numerals, and the description thereof will not be repeated.
  • the bearing portion 9 can be fixed to the casing 8 by the locking portion 914 being locked to the protrusion 86. (First fixing structure). Further, in the blower 4A according to the second embodiment, as shown in FIG. 11, the bearing portion 9A can be fixed to the casing 8A by the screw 11 (second fixing structure).
  • the bearing portion 9 is not only the lock portion 914 and the protrusion 86 but also a screw (not shown) similar to the screw 11 shown in FIG. ) Is also configured to be fixed to the casing 8.
  • a blower includes both the first structure and the second structure.
  • An indoor unit of an air conditioner according to aspect 1 of the present invention includes an impeller 7, a casing 8 that covers the impeller 7, and a bearing portion 9 that rotatably supports one end of a rotating shaft (shaft 71) of the impeller 7.
  • An annular portion 911 and a bearing 92 that rotatably supports one end of the rotating shaft are provided, and the annular portion 911 rotates around the center of the bearing 92 so that the suction portion 83 in the casing 8 is rotated. Fit around.
  • the bearing portion can be removed from the casing by rotating the bearing portion in the direction opposite to that when the bearing portion is fitted in the casing. Therefore, when removing an impeller from a casing, it is not necessary to pull out the rotating shaft of an impeller from a bearing. Therefore, the impeller can be removed while being connected to the motor.
  • the shaft center of the bearing can be made to coincide with the shaft center of the impeller correctly disposed in the casing. Therefore, it is possible to achieve both good maintainability and coincidence of the shaft centers of the impeller and the bearing.
  • the indoor unit of the air conditioner according to aspect 2 of the present invention is the above-described aspect 1, wherein the casing 8 is provided with a plurality of opposing surface portions 10 formed by two opposing surfaces around the suction portion 83,
  • the annular portion 911 has a thick portion 911a and a thin portion 911c that is thinner than the thick portion 911a at a plurality of locations, and rotates around the center of the bearing 92, whereby the thin portion 911c is You may fit in the opposing surface part 10.
  • the thin part 911c may be press-fitted into the facing surface part 10.
  • the bearing portion can be firmly fixed to the casing, and the impeller and the shaft center of the bearing can be matched more accurately.
  • the bearing 92 may be disposed outside the impeller 7 in the direction of the rotation shaft in any of the above aspects 1 to 3.
  • An indoor unit of an air conditioner according to aspect 5 of the present invention is the air conditioner according to any one of the aspects 1 to 4, wherein the bearing 92 is formed by a plurality of leg portions (support leg portions 913) curved in a convex shape. 911 may be supported.
  • the strength for supporting the bearing 92 can be increased.
  • the indoor unit of the air conditioner according to aspect 6 of the present invention is the air conditioner indoor unit according to any one of the aspects 1 to 5, wherein the bearing portion 9 is fitted into the casing 8 and the bearing portion 9 is fixed to the casing 8. It may have a fixed state maintenance part (screw 11, lock part 914) which maintains the above.
  • the indoor unit of an air conditioner according to aspect 7 of the present invention is the air conditioner according to any one of the aspects 1 to 6, wherein the casing 8 is provided around the suction part 83 and the circular part 911 is fitted therein. You may have a cyclic
  • the annular portion can be easily rotated along the convex portion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

Provided is an indoor unit for an air conditioner, configured so that the indoor unit can be easily maintained, and the axes of an impeller and a bearing are aligned with each other. This indoor unit for an air conditioner is provided with a plurality of blowers (4) each having an impeller (7), a casing (8) which covers the impeller (7), and a bearing section (9) which rotatably supports one end of the shaft (71) of the impeller (7). The casing (8) has formed therein air intake sections (83) which are open to the opposite end sides of the shaft (71) and which take in air. The bearing section (9) has an annular section (911) formed in an annular shape, and a bearing (92) which rotatably supports one end of the rotating shaft. The annular section (911) is rotated about the center of the bearing (92) and is thereby fitted to the periphery of the air intake section (3) of the casing (8).

Description

空気調和機の室内機Air conditioner indoor unit
　本発明は、送風機を備えた空気調和機の室内機に関する。 The present invention relates to an indoor unit of an air conditioner equipped with a blower.
　従来の空気調和機の一部の室内機（以下、単に室内機と称する）は、例えば、特許文献１に開示されているように、空調機能等の高機能化のために、シロッコファンから成る送風機を複数備えている。 Some indoor units of conventional air conditioners (hereinafter simply referred to as indoor units) are composed of a sirocco fan, for example, to enhance the air conditioning function and the like as disclosed in Patent Document 1. A plurality of blowers are provided.
　上記の送風機は、羽根車と、羽根車を覆うケーシングとを含んでいる。ケーシングには、羽根車のシャフト（回転軸）方向の側方に開口する吸込部と、シャフトと直交する方向に開口する吐出部とが設けられている。このように構成される送風機は、吸込部から空気を吸込み、吸い込んだ空気を吐出部から吹き出す。 The above blower includes an impeller and a casing that covers the impeller. The casing is provided with a suction portion that opens to the side in the shaft (rotation axis) direction of the impeller and a discharge portion that opens in a direction orthogonal to the shaft. The blower configured as described above sucks air from the suction portion and blows out the sucked air from the discharge portion.
　特許文献１には、羽根車のシャフトの端部を支持する軸受の構造として、以下の２つの構造が開示されている。 Patent Document 1 discloses the following two structures as the structure of the bearing that supports the end of the shaft of the impeller.
　第１の構造は、軸受としての軸支持部が、吸込部の中心を通るように設けられた軸支持台座部の略中心に設けられている（特許文献１の図３）。軸支持部および軸支持台座部は、ケーシングと一体形成されている。 In the first structure, a shaft support portion as a bearing is provided at substantially the center of a shaft support pedestal portion provided so as to pass through the center of the suction portion (FIG. 3 of Patent Document 1). The shaft support portion and the shaft support pedestal portion are integrally formed with the casing.
　第２の構造は、軸支持部が、ケーシングとは別部材で構成された軸支持台座部に設けられている。軸支持台座部は、爪による係止（特許文献１の図９）、ねじなどの締結手段でケーシングに固定される。 In the second structure, the shaft support portion is provided on a shaft support pedestal portion made of a member different from the casing. The shaft support pedestal portion is fixed to the casing by fastening means such as locking by a claw (FIG. 9 of Patent Document 1) and screws.
日本国公開特許公報「特開２０１３－１４２５０２号（２０１３年７月２２日公開）」Japanese Patent Publication “JP 2013-142502 (published July 22, 2013)”
　羽根車の回転中心と軸受の中心とが一致していないと、羽根車が円滑に回転しないという不都合が生じる。 If the rotation center of the impeller and the center of the bearing do not coincide with each other, there is a problem that the impeller does not rotate smoothly.
　第１の構造では、軸支持部がケーシングと一体成形されているので、羽根車の回転中心と軸受の中心とを容易に一致させることができる。 In the first structure, since the shaft support portion is formed integrally with the casing, the rotation center of the impeller and the center of the bearing can be easily matched.
　しかしながら、第１の構造は、軸支持部がケーシングと一体成形されているために、メンテナンス性が良くない。具体的には、メンテナンスのためにケーシングから羽根車を取り外す場合、羽根車をモータから外して、羽根車をモータ側にずらすことで、シャフトを軸支持部から引き抜く必要がある。 However, the first structure has poor maintainability because the shaft support is integrally formed with the casing. Specifically, when removing the impeller from the casing for maintenance, it is necessary to remove the impeller from the motor and shift the impeller to the motor side to pull out the shaft from the shaft support portion.
　一方、第２の構造では、軸支持台座部がケーシングに対して着脱可能に設けられている。これにより、軸支持台座部をケーシングから取り外せば、羽根車のシャフトから軸支持部を外すことができる。それゆえ、羽根車をモータに接続された状態でケーシングから取り外すことができる。このように、第２の構造は、第１の構造よりもメンテナンス性に優れている。 On the other hand, in the second structure, the shaft support pedestal is detachably attached to the casing. Thereby, if a shaft support base part is removed from a casing, a shaft support part can be removed from the shaft of an impeller. Therefore, the impeller can be removed from the casing while being connected to the motor. Thus, the second structure is superior to the first structure in maintainability.
　しかしながら、第２の構造では、軸支持台座部がケーシングに対して着脱可能に設けられているために、羽根車の回転中心と軸受の中心とにずれが生じる。これは、ケーシングと軸支持台座部とを締結する構造に微小な余裕が設けられていることによる。具体的には、爪による係止の場合、ケーシングに設けられた爪を通すために軸支持台座部に設けられた穴が爪よりも大きく形成されている。また、軸支持台座部に設けられた穴に通したねじをケーシングに設けられた雌ねじに締結する場合、穴はねじの直径よりも大きく形成されている。 However, in the second structure, since the shaft support pedestal is detachably attached to the casing, a deviation occurs between the rotation center of the impeller and the center of the bearing. This is because a minute margin is provided in the structure for fastening the casing and the shaft support base. Specifically, in the case of locking by a claw, a hole provided in the shaft support base portion for allowing a claw provided in the casing to pass is formed larger than the claw. Moreover, when the screw passed through the hole provided in the shaft support base is fastened to the female screw provided in the casing, the hole is formed larger than the diameter of the screw.
　このように、第１および第２の構造では、良好なメンテナンス性と、羽根車および軸受の軸心の一致とを両立させることができない。 Thus, in the first and second structures, it is impossible to achieve both good maintainability and coincidence of the impeller and bearing shafts.
　本発明の一態様は、良好なメンテナンス性と、羽根車および軸受の軸心の一致とを両立させることを目的とする。 An object of one aspect of the present invention is to achieve both good maintainability and coincidence of the impeller and bearing shafts.
　上記の課題を解決するために、本発明の一態様に係る空気調和機の室内機は、羽根車、当該羽根車を覆うケーシングおよび前記羽根車の回転軸の一端を回転可能に支持する軸受部を有する複数の送風機を備え、前記ケーシングに、前記回転軸の両端側に開口する空気を吸い込むための吸込部が形成されるとともに、前記軸受部が、円環状に形成された円環部と、前記回転軸の一端を回転可能に支持する軸受とを有し、前記円環部が、前記軸受の中心回りに回転することにより、前記ケーシングにおける前記吸込部の周囲に嵌まり込む。 In order to solve the above problems, an indoor unit of an air conditioner according to an aspect of the present invention includes an impeller, a casing that covers the impeller, and a bearing portion that rotatably supports one end of a rotation shaft of the impeller. A suction part for sucking air that opens to both ends of the rotary shaft is formed in the casing, and the bearing part is an annular part formed in an annular shape, A bearing that rotatably supports one end of the rotating shaft, and the annular portion is fitted around the suction portion of the casing by rotating around the center of the bearing.
　本発明の一態様によれば、良好なメンテナンス性と、羽根車および軸受の軸心の一致とを両立させることができる。 According to one aspect of the present invention, it is possible to achieve both good maintainability and coincidence of the impeller and bearing shaft centers.
本発明の実施形態１に係る空気調和機の室内機の外観を示す斜視図である。It is a perspective view which shows the external appearance of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. 上記室内機の内部構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the internal structure of the said indoor unit. （ａ）は停止状態にある上記室内機の側面図であり、（ｂ）は空調モードかつ冷房設定の動作状態にある上記室内機の側面図であり、（ｃ）は空気清浄モードかつ冷房設定の動作状態にある上記室内機の側面図である。(A) is a side view of the indoor unit in a stopped state, (b) is a side view of the indoor unit in an air conditioning mode and cooling setting operation state, and (c) is an air cleaning mode and cooling setting. It is a side view of the said indoor unit in the operation state. 上記室内機に内蔵されるモータおよび送風機が結合された状態を示す断面図である。It is sectional drawing which shows the state with which the motor built in the said indoor unit and the air blower were couple | bonded. 上記送風機におけるケーシングおよび羽根車を示す斜視図である。It is a perspective view which shows the casing and impeller in the said air blower. 上記ケーシングと上記送風機における軸受部との結合状態を示す部分拡大断面図である。It is a partial expanded sectional view which shows the combined state of the said casing and the bearing part in the said air blower. 上記軸受部の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the said bearing part. （ａ）～（ｃ）はそれぞれ上記軸受部における軸受ホルダの構成を示す上面図、側面図および底面図である。(A) to (c) are a top view, a side view, and a bottom view showing the configuration of the bearing holder in the bearing portion, respectively. 上記軸受部の外観を示す斜視図である。It is a perspective view which shows the external appearance of the said bearing part. （ａ）～（ｃ）は実施形態１および３に係る送風機において上記軸受部を上記ケーシングに取り付ける手順を示す送風機の斜視図である。(A)-(c) is a perspective view of a blower showing a procedure for attaching the bearing portion to the casing in the blower according to the first and third embodiments. 本発明の実施形態２および３に係る送風機の外観を示す斜視図である。It is a perspective view which shows the external appearance of the air blower concerning Embodiment 2 and 3 of this invention.
　〔実施形態１〕
　本発明の一実施形態について図１～図１０に基づいて説明すると、以下の通りである。 Embodiment 1
An embodiment of the present invention will be described with reference to FIGS. 1 to 10 as follows.
　（室内機１の概要）
　図１は、本実施形態に係る空気調和機の室内機（以下、単に室内機と称する）１の外観を示す斜視図である。図２は、室内機１の内部構造を示す縦断面図である。 (Outline of indoor unit 1)
FIG. 1 is a perspective view showing an appearance of an indoor unit (hereinafter simply referred to as an indoor unit) 1 of an air conditioner according to the present embodiment. FIG. 2 is a longitudinal sectional view showing the internal structure of the indoor unit 1.
　図１に示すように、室内機１は、本体部２と、導風板３とを備えている。導風板３は、本体部２の前面に設けられている。図２に示すように、本体部２の上部には第１吸込口２１が形成され、本体部２の下部には第２吸込口２２が形成されている。また、本体部２の内部には、送風機４および熱交換器５が設けられている。さらに、本体部２の前部には吹出口２３が形成されている。 As shown in FIG. 1, the indoor unit 1 includes a main body 2 and an air guide plate 3. The air guide plate 3 is provided on the front surface of the main body 2. As shown in FIG. 2, a first suction port 21 is formed in the upper part of the main body 2, and a second suction port 22 is formed in the lower part of the main body 2. A blower 4 and a heat exchanger 5 are provided inside the main body 2. Further, an air outlet 23 is formed in the front portion of the main body 2.
　室内機１において、第１吸込口２１の内側（下側）には、第１フィルタ２４が設けられ、第２吸込口１２の内側（上側）には、第２フィルタ２５が設けられている。第１フィルタ２４は、例えばプレフィルタに相当する機能を有するフィルタである。第１フィルタ２４は、第２フィルタ２５よりも低性能であり、かつ第２フィルタ２５よりも通風抵抗が小さい。第２フィルタ２５は、例えばＨＥＰＡフィルタ（High Efficiency Particulate Air Filter）である。第２フィルタ２５は、第１フィルタ２４よりも高性能であり、かつ第１フィルタ２４よりも通風抵抗が大きいフィルタである。 In the indoor unit 1, a first filter 24 is provided on the inner side (lower side) of the first suction port 21, and a second filter 25 is provided on the inner side (upper side) of the second suction port 12. The first filter 24 is a filter having a function corresponding to, for example, a prefilter. The first filter 24 has a lower performance than the second filter 25 and has a lower ventilation resistance than the second filter 25. The second filter 25 is, for example, a HEPA filter (High Efficiency Particulate Air Filter). The second filter 25 is a filter that has higher performance than the first filter 24 and has a larger ventilation resistance than the first filter 24.
　室内機１では、第１吸込口２１から吸い込まれた空気は、第１フィルタ２４、送風機４および熱交換器５を経て吹出口２３から吹き出される。また、第２吸込口２２から吸い込まれた空気は、第２フィルタ２５、送風機４および熱交換器５を経て吹出口２３から吹き出される。 In the indoor unit 1, the air sucked from the first suction port 21 is blown out from the outlet 23 through the first filter 24, the blower 4 and the heat exchanger 5. Further, the air sucked from the second suction port 22 is blown out from the blower outlet 23 through the second filter 25, the blower 4 and the heat exchanger 5.
　第１吸込口２１には、第１吸込口２１を開閉する開閉蓋２６が設けられている。図３の（ａ）は、停止状態にある室内機１の側面図である。図３の（ｂ）は、空調モードかつ冷房設定の動作状態にある室内機１の側面図である。図３の（ｃ）は、空気清浄モードかつ冷房設定の動作状態にある室内機１の側面図である。 The first suction port 21 is provided with an opening / closing lid 26 that opens and closes the first suction port 21. FIG. 3A is a side view of the indoor unit 1 in a stopped state. FIG. 3B is a side view of the indoor unit 1 in the operation state of the air conditioning mode and the cooling setting. FIG. 3C is a side view of the indoor unit 1 in the operation state of the air cleaning mode and the cooling setting.
　開閉蓋２６は、図３の（ａ）に示すように、室内機１の運転停止時には閉じている。また、開閉蓋２６は、図３の（ｂ）に示すように、室内機１を空気清浄機能よりも空気調和機能を優先して運転する場合（空調モードの場合）に開く。さらに、開閉蓋２６は、図３の（ｃ）に示すように、室内機１を空気調和機能よりも空気清浄機能を優先して運転する場合（空気清浄モードの場合）に閉じる。 The opening / closing lid 26 is closed when the operation of the indoor unit 1 is stopped, as shown in FIG. Further, as shown in FIG. 3B, the opening / closing lid 26 is opened when the indoor unit 1 is operated with priority on the air conditioning function over the air cleaning function (in the air conditioning mode). Furthermore, as shown in FIG. 3C, the opening / closing lid 26 is closed when the indoor unit 1 is operated with priority on the air cleaning function over the air conditioning function (in the air cleaning mode).
　熱交換器５は、上下に配置された２個の熱交換器が連結されており、連結部が前方へ突出している。 The heat exchanger 5 is connected to two heat exchangers arranged one above the other, and the connecting portion protrudes forward.
　（送風機４の詳細）
　図４は、室内機１に内蔵されるモータ６および送風機４が結合された状態を示す断面図である。図５は、送風機４における羽根車７およびケーシング８を示す斜視図である。図６は、ケーシング８と軸受部９との結合状態を示す部分拡大断面図である。図７は、軸受部９の構成を示す分解斜視図である。図８の（ａ）～（ｃ）は、それぞれ軸受部９における軸受ホルダ９１を示す上面図、側面図および底面図である。図９は、軸受部９の外観を示す斜視図である。 (Details of blower 4)
FIG. 4 is a cross-sectional view showing a state where the motor 6 and the blower 4 built in the indoor unit 1 are combined. FIG. 5 is a perspective view showing the impeller 7 and the casing 8 in the blower 4. FIG. 6 is a partially enlarged cross-sectional view showing a coupling state of the casing 8 and the bearing portion 9. FIG. 7 is an exploded perspective view showing the configuration of the bearing portion 9. FIGS. 8A to 8C are a top view, a side view, and a bottom view showing the bearing holder 91 in the bearing portion 9, respectively. FIG. 9 is a perspective view showing the appearance of the bearing portion 9.
　図４に示すように、本体部２の内部にはモータ６が設けられている。モータ６の両側方には、２台の送風機４が配置されている。モータ６は、本体部６１を有しており、本体部６１の両側方に突出する２本の駆動軸６２を回転させることにより、送風機４のそれぞれの羽根車７を回転駆動する。 As shown in FIG. 4, a motor 6 is provided inside the main body 2. Two fans 4 are arranged on both sides of the motor 6. The motor 6 has a main body 61, and rotates the two impellers 7 of the blower 4 by rotating the two drive shafts 62 projecting on both sides of the main body 61.
　送風機４は、例えばシロッコファンであり、羽根車７と、ケーシング８と、軸受部９とを有している。 The blower 4 is a sirocco fan, for example, and includes an impeller 7, a casing 8, and a bearing portion 9.
　羽根車７は、多数の羽が円筒状に配置されることによって構成されている。また、羽根車７は、回転の中心に設けられた中空のシャフト７１（回転軸）を有している。モータ６の駆動軸６２は、シャフト７１におけるモータ６側の端部に嵌め入れられることによってシャフト７１と結合されている。シャフト７１におけるモータ６側の端部には、延長軸７２（回転軸）が接続されている。 The impeller 7 is configured by arranging a large number of wings in a cylindrical shape. The impeller 7 has a hollow shaft 71 (rotating shaft) provided at the center of rotation. The drive shaft 62 of the motor 6 is coupled to the shaft 71 by being fitted into the end portion of the shaft 71 on the motor 6 side. An extension shaft 72 (rotating shaft) is connected to the end of the shaft 71 on the motor 6 side.
　モータ６の２本の駆動軸６２と、２台の送風機４のそれぞれのシャフト７１および延長軸７２とは同軸に設けられている。 The two drive shafts 62 of the motor 6 and the shafts 71 and the extension shafts 72 of the two blowers 4 are provided coaxially.
　ケーシング８は、羽根車７を覆う外装体であり、樹脂によって形成されている。ケーシング８は、外径が渦巻き曲線状に徐々に大きくなるように形成されている。また、図５に示すように、ケーシング８は、２分割可能となるように、上部８１と下部８２とが接合されることにより構成されている。 The casing 8 is an exterior body that covers the impeller 7 and is formed of resin. The casing 8 is formed so that the outer diameter gradually increases in a spiral curve shape. As shown in FIG. 5, the casing 8 is configured by joining an upper portion 81 and a lower portion 82 so that the casing 8 can be divided into two.
　ケーシング８の両側面には、空気を吸い込むための吸込部８３が、シャフト７１の両端側に円形状に開口するように形成されている。吸込部８３の周囲には、全周にわたって円環状に形成された段差部８４（凸部）が設けられている。段差部８４は、２段に構成されているが、その段数は２段に限定されず１段であってもよい。 Suction portions 83 for sucking air are formed on both side surfaces of the casing 8 so as to open in a circular shape on both end sides of the shaft 71. Around the suction part 83, a step part 84 (convex part) formed in an annular shape over the entire circumference is provided. The step portion 84 is configured in two steps, but the number of steps is not limited to two and may be one.
　段差部８４には、間隔をおいて複数（例えば３つ）の突出部８５が設けられている。突出部８５は、段差部８４から段差部８４の外方に向かって突出するように形成されている。突出部８５は、補強部８５ａと、幅広部８５ｂとを有している。補強部８５ａは、突出部８５の両端部に設けられている。また、補強部８５ａは、突出部８５を補強するに足りる厚みおよび高さを有している。幅広部８５ｂは、補強部８５ａの間に設けられた肉薄の部分である。図６に示すように、突出部８５におけるケーシング８の側面８ａと対向する内面８５ｃと、ケーシング８の側面８ａとは間隔をおいて対向する対向面部１０を形成している。 The stepped portion 84 is provided with a plurality of (for example, three) protruding portions 85 at intervals. The protruding portion 85 is formed so as to protrude from the step portion 84 toward the outside of the step portion 84. The protruding portion 85 has a reinforcing portion 85a and a wide portion 85b. The reinforcing portion 85 a is provided at both ends of the protruding portion 85. The reinforcing portion 85a has a thickness and height sufficient to reinforce the protruding portion 85. The wide portion 85b is a thin portion provided between the reinforcing portions 85a. As shown in FIG. 6, the inner surface 85 c that faces the side surface 8 a of the casing 8 in the protruding portion 85 and the side surface 8 a of the casing 8 form a facing surface portion 10 that faces the space 8.
　また、段差部８４には、突起８６が設けられている。突起８６は、段差部８４の１段目（側面８ａの次に高い面）における最下端に設けられており、段差部８４の２段目における側面から突出するように形成されている。突起８６は、後述する軸受ホルダ９１のロック部９１４が係止される部分である。突起８６が設けられる位置は、段差部８４の最下端に限定されないが、ロック部９１４の突起８６に対する係止を解除する操作が下方から行われることから、段差部８４の下側であることが望ましい。 Further, the step portion 84 is provided with a protrusion 86. The protrusion 86 is provided at the lowest end of the first step (the next highest surface after the side surface 8 a) of the stepped portion 84, and is formed so as to protrude from the side surface of the second step of the stepped portion 84. The protrusion 86 is a portion where a lock portion 914 of the bearing holder 91 described later is locked. The position at which the protrusion 86 is provided is not limited to the lowermost end of the stepped portion 84, but since the operation of releasing the locking of the lock portion 914 with respect to the protrusion 86 is performed from below, it may be below the stepped portion 84. desirable.
　ケーシング８における羽根車７の羽に面する一部には、吹出部８７が開口するように形成されている。羽根車７の回転により、吸込部８３から吸い込まれた空気は吹出部８７から吹き出される。 A part of the casing 8 facing the blades of the impeller 7 is formed so that a blowout part 87 is opened. By the rotation of the impeller 7, the air sucked from the suction portion 83 is blown out from the blowout portion 87.
　軸受部９は、羽根車７の延長軸７２を回転可能に支持する部分である。図７にも示すように、軸受部９は、軸受ホルダ９１と、軸受９２と、クッション９３と、軸受カバー９４とを有している。 The bearing portion 9 is a portion that rotatably supports the extension shaft 72 of the impeller 7. As shown also in FIG. 7, the bearing portion 9 includes a bearing holder 91, a bearing 92, a cushion 93, and a bearing cover 94.
　軸受ホルダ９１は、羽根車７のシャフト７１の一端（延長軸７２）を回転可能に支持する部分であり、樹脂によって形成されている。軸受ホルダ９１は、図７および図８の（ａ）～（ｃ）に示すように、円環部９１１と、軸受配置部９１２と、複数の支持脚部９１３（脚部）と、ロック部９１４（固定状態維持部）とを有している。なお、図８の（ａ）～（ｃ）では、ロック部９１４の図示を省略している。 The bearing holder 91 is a portion that rotatably supports one end (extension shaft 72) of the shaft 71 of the impeller 7, and is formed of resin. The bearing holder 91 includes an annular portion 911, a bearing arrangement portion 912, a plurality of support legs 913 (leg portions), and a lock portion 914, as shown in FIGS. (Fixed state maintaining unit). In FIGS. 8A to 8C, the lock portion 914 is not shown.
　円環部９１１は、ケーシング８に取り付けられる部分であり、円環状に形成されている。円環部９１１は、肉厚部９１１ａと、切欠き部９１１ｂと、肉薄部９１１ｃとを有している。また、円環部９１１は、その内周部でケーシング８の段差部８４に嵌まる。なお、円環部９１１は、その外周部でケーシング８の段差部８４に嵌まってもよい。この構造では、段差部８４の内周面と吸込部８３との間に、円環部９１１の底面が接することが可能な平坦な側面８ａの一部が存在している。 The annular portion 911 is a portion attached to the casing 8 and is formed in an annular shape. The annular part 911 has a thick part 911a, a notch part 911b, and a thin part 911c. Further, the annular portion 911 fits into the stepped portion 84 of the casing 8 at the inner peripheral portion thereof. The annular portion 911 may be fitted to the stepped portion 84 of the casing 8 at the outer peripheral portion thereof. In this structure, a part of the flat side surface 8 a that can contact the bottom surface of the annular portion 911 exists between the inner peripheral surface of the step portion 84 and the suction portion 83.
　肉厚部９１１ａは、円環部９１１において最も厚い部分である。 The thick part 911a is the thickest part in the annular part 911.
　切欠き部９１１ｂは、円環部９１１の内周側に開くように形成されている。また、切欠き部９１１ｂは、円環部９１１がケーシング８の側面８ａに配置された状態で突出部８５を取り囲むように、突出部８５より大きく、突出部８５と同数、かつ突出部８５と同じ配置間隔で形成されている。なお、円環部９１１は、その外周部でケーシング８の段差部８４に嵌まる構造では、対向面部１０が吸込部８３側に開いているので、切欠き部９１１ｂが円環部９１１の外周側に開くように形成される。 The notch portion 911b is formed so as to open to the inner peripheral side of the annular portion 911. Further, the notch portions 911b are larger than the projecting portions 85, the same number as the projecting portions 85, and the same as the projecting portions 85 so that the annular portion 911 surrounds the projecting portion 85 in a state where the annular portion 911 is disposed on the side surface 8a of the casing 8. It is formed at an arrangement interval. In the structure in which the annular portion 911 is fitted to the stepped portion 84 of the casing 8 at the outer peripheral portion thereof, the notch portion 911b is provided on the outer peripheral side of the annular portion 911 because the facing surface portion 10 is open to the suction portion 83 side. Formed to open.
　図９に示すように、肉薄部９１１ｃは、肉厚部９１１ａと切欠き部９１１ｂとの間に形成されている。肉薄部９１１ｃは、肉厚部９１１ａよりも厚みの薄い部分であり、肉厚部９１１ａ側の端部から切欠き部９１１ｂ側の端部にかけて徐々に厚みが薄くなるように形成されている。また、肉薄部９１１ｃにおける肉厚部９１１ａの近傍部分は、図６に示すように、突出部８５の内面８５ｃと側面８ａとの間に圧入されるように、内面８５ｃと側面８ａとの間の間隔よりも僅かに厚く形成されている。 As shown in FIG. 9, the thin part 911c is formed between the thick part 911a and the notch part 911b. The thin portion 911c is a portion that is thinner than the thick portion 911a, and is formed so that the thickness gradually decreases from the end portion on the thick portion 911a side to the end portion on the notch portion 911b side. Further, as shown in FIG. 6, the portion near the thick portion 911 a in the thin portion 911 c is press-fitted between the inner surface 85 c and the side surface 8 a of the protruding portion 85, so that it is between the inner surface 85 c and the side surface 8 a. It is formed slightly thicker than the interval.
　軸受配置部９１２は、軸受９２を内包するクッション９３を所定の位置に配置する部分である。軸受配置部９１２は、短い円筒状に形成されており、ケーシング８から遠い側が開口している。また、軸受配置部９１２は、図８の（ｃ）に示すように、ケーシング８に近い側（軸受部９の底部側）の中央に延長軸７２を通すための貫通孔９１２ａが形成されている。軸受配置部９１２は、円環部９１１と同じ中心を有する。また、軸受配置部９１２の外周面には、間隔をおいて複数の突起９１２ｂが設けられている。 The bearing arrangement part 912 is a part for arranging the cushion 93 containing the bearing 92 at a predetermined position. The bearing arrangement portion 912 is formed in a short cylindrical shape, and the side far from the casing 8 is open. Further, as shown in FIG. 8C, the bearing arrangement portion 912 is formed with a through hole 912 a for passing the extension shaft 72 in the center on the side close to the casing 8 (the bottom side of the bearing portion 9). . The bearing arrangement portion 912 has the same center as the annular portion 911. A plurality of protrusions 912b are provided on the outer peripheral surface of the bearing arrangement portion 912 at intervals.
　支持脚部９１３は、軸受配置部９１２を円環部９１１上に支持する部分である。支持脚部９１３は、軸受配置部９１２の外周面において間隔をおいた位置から放射状に伸び、かつ、それぞれが円環部９１１における間隔をおいた位置に繋がるように形成されている。また、支持脚部９１３は、外側に向かって緩やかに凸状に湾曲する円弧形状に形成されることにより、軸受配置部９１２を支持する強度を高めている。 The support leg portion 913 is a portion that supports the bearing arrangement portion 912 on the annular portion 911. The support leg portions 913 are formed so as to extend radially from the spaced positions on the outer peripheral surface of the bearing arrangement portion 912 and to be connected to the spaced positions in the annular portion 911. Further, the support leg portion 913 is formed in an arc shape that gently curves in a convex shape toward the outside, thereby increasing the strength for supporting the bearing arrangement portion 912.
　ロック部９１４は、軸受配置部９１２の外周面に設けられている。ロック部９１４は、ケーシング８の突起８６に係止されるように、かつ、その端部が円環部９１１に達するように形成されている。ロック部９１４は、突起８６に係止されることにより、肉薄部９１１ｃが対向面部１０に嵌まり込んだ、軸受部９のケーシング８に対する固定状態を維持する。 The lock part 914 is provided on the outer peripheral surface of the bearing arrangement part 912. The lock portion 914 is formed so as to be locked to the protrusion 86 of the casing 8 and its end portion reaches the annular portion 911. The lock portion 914 is locked to the protrusion 86, thereby maintaining the fixed state of the bearing portion 9 with respect to the casing 8 in which the thin portion 911 c is fitted into the facing surface portion 10.
　また、図９に示すように、ロック部９１４は、可動部９１４ａと、指当て部９１４ｂとを有している。可動部９１４ａは、軸受配置部９１２の外周面から突出するように配置されている。可動部９１４ａは、羽根車７のシャフト７１の軸方向と垂直な面を有する平板状に形成された部分であり、可撓性を有している。指当て部９１４ｂは、指を当てやすいように、円環部９１１からさらに外方に突出するように形成されている。 Moreover, as shown in FIG. 9, the lock part 914 has the movable part 914a and the finger pad part 914b. The movable portion 914a is arranged so as to protrude from the outer peripheral surface of the bearing arrangement portion 912. The movable portion 914a is a portion formed in a flat plate shape having a surface perpendicular to the axial direction of the shaft 71 of the impeller 7, and has flexibility. The finger contact portion 914b is formed so as to protrude further outward from the annular portion 911 so that the finger can be easily applied.
　軸受９２は、羽根車７の延長軸７２を回転可能に支持する。軸受９２は、例えば、円錐ころ軸受などであり、ポリスライダーのような樹脂によって形成されている。 The bearing 92 rotatably supports the extension shaft 72 of the impeller 7. The bearing 92 is, for example, a tapered roller bearing, and is formed of a resin such as a polyslider.
　クッション９３は、軸受９２の外周面を包み込むように保持する。クッション９３は、ゴムなどの弾性を有する材料で形成されている。 The cushion 93 is held so as to wrap around the outer peripheral surface of the bearing 92. The cushion 93 is made of an elastic material such as rubber.
　軸受カバー９４は、軸受９２を内包するクッション９３を覆い、かつ軸受９２を軸受配置部９１２に保持する部分であり、樹脂によって形成されている。軸受カバー９４の外周面には、軸受配置部９１２の突起９１２ｂに係止する係止部９４ａが複数設けられている。係止部９４ａは、Ｕ字形状を成しており、屈曲する部分で突起９１２ｂに係止する。軸受カバー９４は、係止部９４ａが突起９１２ｂに係止することにより、軸受配置部９１２に固定される。 The bearing cover 94 is a portion that covers the cushion 93 that encloses the bearing 92 and that holds the bearing 92 in the bearing arrangement portion 912, and is formed of resin. On the outer peripheral surface of the bearing cover 94, a plurality of locking portions 94 a that are locked to the protrusions 912 b of the bearing arrangement portion 912 are provided. The locking portion 94a has a U shape, and is locked to the protrusion 912b at a bent portion. The bearing cover 94 is fixed to the bearing arrangement portion 912 by the locking portion 94a being locked to the protrusion 912b.
　（軸受部９のケーシング８への取り付け）
　上記のように構成される送風機４における軸受部９のケーシング８への取り付けについて説明する。図１０の（ａ）～（ｃ）は、軸受部９をケーシング８に取り付ける手順を示す送風機４の斜視図である。 (Attaching the bearing 9 to the casing 8)
The attachment to the casing 8 of the bearing part 9 in the air blower 4 comprised as mentioned above is demonstrated. FIGS. 10A to 10C are perspective views of the blower 4 showing the procedure for attaching the bearing portion 9 to the casing 8.
　まず、図１０の（ａ）に示すように、羽根車７をケーシング８に内蔵させておく。この状態で、軸受ホルダ９１の円環部９１１をケーシング８の側面８ａに向き合わせるとともに、切欠き部９１１ｂを突出部８５に向き合わせる。 First, the impeller 7 is built in the casing 8 as shown in FIG. In this state, the annular portion 911 of the bearing holder 91 faces the side surface 8a of the casing 8, and the notch portion 911b faces the protruding portion 85.
　次に、図１０の（ｂ）に示すように、切欠き部９１１ｂを突出部８５に嵌め合わせるとともに、円環部９１１を側面８ａに接触させるとともに、シャフト７１の先端、すなわち延長軸７２を軸受９２内に挿入する。そして、図１０の（ｂ）に矢印にて示す方向に軸受部９を軸受９２の中心回りに回転させることにより、突出部８５と側面８ａとの間に肉薄部９１１ｃを進入させる。 Next, as shown in FIG. 10 (b), the notch portion 911b is fitted to the protruding portion 85, the annular portion 911 is brought into contact with the side surface 8a, and the tip of the shaft 71, that is, the extension shaft 72 is supported by the bearing. Insert into 92. And the thin part 911c is made to approach between the protrusion part 85 and the side surface 8a by rotating the bearing part 9 around the center of the bearing 92 in the direction shown by the arrow in FIG.
　そして、肉厚部９１１ａと肉薄部９１１ｃとの境界の段差部分が突出部８５に当接するまで軸受部９を回転させることにより、図１０の（ｃ）に示すように、肉薄部９１１ｃが対向面部１０に嵌まり込む。これにより、軸受部９は、ケーシング８における吸込部８３の周囲に嵌まり込む。また、ロック部９１４は、軸受部９の回転に伴って突起８６を乗り越え、肉薄部９１１ｃが対向面部１０に嵌まり込んだ状態で、突起８６に係止される。このようにして、送風機４が完成する。 Then, by rotating the bearing portion 9 until the stepped portion at the boundary between the thick portion 911a and the thin portion 911c contacts the protruding portion 85, as shown in FIG. 10C, the thin portion 911c becomes the facing surface portion. 10 fits. As a result, the bearing portion 9 is fitted around the suction portion 83 in the casing 8. Further, the lock portion 914 gets over the projection 86 as the bearing portion 9 rotates, and is locked to the projection 86 in a state where the thin portion 911 c is fitted into the facing surface portion 10. In this way, the blower 4 is completed.
　軸受部９をケーシング８から取り外す場合、ユーザが、ロック部９１４の指当て部９１４に指を当てて円環部９１１から離すようにロック部９１４を持ち上げた状態で、固定時とは逆の方向に軸受部９を回転させる。次に、肉薄部９１１ｃが対向面部１０から脱して、突出部８５が全て切欠き部９１１ｂに現れると、軸受部９をケーシング８から離す。そして、ケーシング８の下部８２を上部８１から外すことにより、羽根車７がケーシング８から取り外し可能となる。 When removing the bearing portion 9 from the casing 8, the user lifts the lock portion 914 so that the finger rests on the finger contact portion 914 of the lock portion 914 and separates it from the annular portion 911, and the direction opposite to that when fixed The bearing 9 is rotated. Next, when the thin portion 911c is detached from the facing surface portion 10 and all the protruding portions 85 appear in the notch portion 911b, the bearing portion 9 is separated from the casing 8. The impeller 7 can be removed from the casing 8 by removing the lower part 82 of the casing 8 from the upper part 81.
　（軸受部９の利点）
　以上のように、送風機４は、ケーシング８に着脱可能な軸受部９を有している。軸受部９の円環部９１１は、軸受９２の中心回りに回転することにより、ケーシング８における吸込部８３の周囲に嵌まり込む。具体的には、軸受部９は、肉厚部９１１ａと、複数箇所において肉厚部９１１ａより厚みの薄い肉薄部９１１ｃとを有し、軸受９２の中心回りに回転することにより、肉薄部９１１ｃがケーシング８における吸込部８３の周囲に設けられた対向面部１０に嵌まり込む。 (Advantages of bearing 9)
As described above, the blower 4 has the bearing portion 9 that can be attached to and detached from the casing 8. The annular portion 911 of the bearing portion 9 is fitted around the suction portion 83 in the casing 8 by rotating around the center of the bearing 92. Specifically, the bearing portion 9 has a thick portion 911a and thin portions 911c that are thinner than the thick portion 911a at a plurality of locations, and the thin portion 911c is rotated by rotating around the center of the bearing 92. The casing 8 is fitted into the facing surface portion 10 provided around the suction portion 83.
　これにより、羽根車７をケーシング８から取り外すときに、羽根車７のシャフト７１を軸受９２から引き抜く必要がない。それゆえ、羽根車７をモータ６に接続された状態で取り外すことができる。また、軸受部９がガタツキ無くケーシング８に固定されるので、軸受９２の軸心を、ケーシング８に正しく配置された羽根車７の軸心と一致させることができる。したがって、良好なメンテナンス性と、羽根車７および軸受９２の軸心の一致とを両立させることができる。 Thereby, when removing the impeller 7 from the casing 8, it is not necessary to pull out the shaft 71 of the impeller 7 from the bearing 92. Therefore, the impeller 7 can be removed while being connected to the motor 6. Further, since the bearing portion 9 is fixed to the casing 8 without rattling, the shaft center of the bearing 92 can be made to coincide with the shaft center of the impeller 7 that is correctly arranged in the casing 8. Therefore, it is possible to achieve both good maintainability and coincidence of the shaft centers of the impeller 7 and the bearing 92.
　なお、軸受部９が軸受９２の中心回りに回転することによりケーシング８に嵌まり込む構造は、上述した構造に限定されない。例えば、円環部９１１の内周面に雌ねじが形成され、段差部８４の外周面に雄ねじが形成されることにより、円環部９１１が段差部８４にねじ嵌合するような構造であってもよい。 The structure in which the bearing portion 9 is fitted into the casing 8 by rotating around the center of the bearing 92 is not limited to the structure described above. For example, an internal thread is formed on the inner peripheral surface of the annular portion 911, and a male screw is formed on the outer peripheral surface of the stepped portion 84, so that the annular portion 911 is screwed into the stepped portion 84. Also good.
　また、本実施形態では、送風機４が１組のロック部９１４および突起８６を備える構成について説明した。しかしながら、送風機４は、１組に限らず、複数組のロック部９１４および突起８６を備えていてもよい。 Further, in the present embodiment, the configuration in which the blower 4 includes one set of the lock portion 914 and the protrusion 86 has been described. However, the blower 4 is not limited to one set, and may include a plurality of sets of lock portions 914 and protrusions 86.
　また、肉薄部９１１ｃが対向面部１０に圧入されるので、軸受部９をケーシング８に強固に固定することができるとともに、より正確に羽根車７および軸受９２の軸心を一致させることができる。 Further, since the thin portion 911c is press-fitted into the facing surface portion 10, the bearing portion 9 can be firmly fixed to the casing 8, and the shaft centers of the impeller 7 and the bearing 92 can be aligned more accurately.
　また、ロック部９１４は、肉薄部９１１ｃが対向面部１０に嵌まり込んだ、軸受部９のケーシング８に対する固定状態を維持する。これにより、羽根車７の回転による振動のために軸受部９のケーシング８への嵌め込みが緩むことを防止できる。 Moreover, the lock part 914 maintains the fixed state with respect to the casing 8 of the bearing part 9 in which the thin part 911c fits into the facing surface part 10. Thereby, it is possible to prevent loose fitting of the bearing portion 9 into the casing 8 due to vibration caused by the rotation of the impeller 7.
　また、円環部９１１は、円環状に形成された段差部８４（凸部）に、その内周部または外周部で嵌まる。これにより、円環部９１１を段差部８４に沿って容易に回転させることができる。 Further, the annular portion 911 is fitted to the stepped portion 84 (convex portion) formed in an annular shape at the inner peripheral portion or the outer peripheral portion thereof. Thereby, the annular part 911 can be easily rotated along the step part 84.
　ところで、一般に、シロッコファンのような送風機では、羽根車に近づくほど風速が速くなる。特許文献１に開示された前述の第１および第２の構造では、軸支持部を含む軸支持台座部が羽根車の内部に配置されている。このため、軸支持台座部による送風抵抗が大きくなることで、吸込みの効率が低下する。 By the way, in general, in a blower such as a sirocco fan, the wind speed increases as it approaches the impeller. In the first and second structures disclosed in Patent Document 1, the shaft support pedestal including the shaft support is disposed inside the impeller. For this reason, the ventilation efficiency by a shaft support base part becomes large, and the efficiency of suction falls.
　これに対し、本実施形態の送風機４では、軸受９２が、シャフト７１の方向で羽根車７の外側に配置されている。これにより、軸受９２がケーシング８の吸込部８３における空気の吸込みの効率を低下させることを抑制することができる。 In contrast, in the blower 4 of the present embodiment, the bearing 92 is disposed outside the impeller 7 in the direction of the shaft 71. Thereby, it can suppress that the bearing 92 reduces the efficiency of the suction of the air in the suction part 83 of the casing 8. FIG.
　〔実施形態２〕
　本発明の実施形態２について、図１１に基づいて以下に説明する。なお、説明の便宜上、上記実施形態１にて説明した構成要素と同じ機能を有する構成要素については、同じ符号を付記し、その説明を繰り返さない。 [Embodiment 2]
A second embodiment of the present invention will be described below based on FIG. For convenience of explanation, components having the same functions as those described in the first embodiment are denoted by the same reference numerals, and description thereof is not repeated.
　図１１は、本実施形態に係る送風機４Ａの外観を示す斜視図である。 FIG. 11 is a perspective view showing an appearance of the blower 4A according to the present embodiment.
　図１１に示す送風機４Ａは、実施形態１の送風機４と同様、室内機１（図２参照）に内蔵される。また、送風機４Ａは、羽根車７と、ケーシング８Ａと、軸受部９Ａとを有している。 The fan 4A shown in FIG. 11 is built in the indoor unit 1 (see FIG. 2), similarly to the fan 4 of the first embodiment. The blower 4A has an impeller 7, a casing 8A, and a bearing portion 9A.
　ケーシング８Ａは、段差部８４に突起８６が設けられていないこと以外はケーシング８と同じに構成されている。また、軸受部９Ａは、軸受ホルダ９１にロック部９１４が設けられていないこと以外は軸受部９と同じに構成されている。 The casing 8A is configured in the same way as the casing 8 except that the protrusion 86 is not provided on the stepped portion 84. The bearing portion 9A is configured in the same manner as the bearing portion 9 except that the bearing holder 91 is not provided with the lock portion 914.
　軸受部９Ａは、ねじ１１（固定状態維持部）によってケーシング８Ａに固定可能である。ねじ１１が締結される位置は、ケーシング８Ａの最下端に限定されないが、ねじ１１の締結および解除の操作が下方から行われるため、ケーシング８Ａの下側であることが望ましい。 The bearing portion 9A can be fixed to the casing 8A with a screw 11 (fixed state maintaining portion). The position at which the screw 11 is fastened is not limited to the lowermost end of the casing 8A. However, since the fastening and releasing operations of the screw 11 are performed from below, it is desirable to be on the lower side of the casing 8A.
　上記の構成では、実施形態１で説明したように、軸受部９Ａがケーシング８Ａに嵌まり込んだ状態で、軸受部９Ａをケーシング８Ａにねじ１１で固定する。これにより、肉薄部９１１ｃが対向面部１０に嵌まり込んだ、軸受部９のケーシング８に対する固定状態を維持する。これにより、軸受部９Ａがケーシング８Ａへの取り付け時と逆方向に回転することを阻止することができる。したがって、羽根車７の回転による振動のために軸受部９のケーシング８への嵌め込みが緩むことを防止できる。 In the above configuration, as described in the first embodiment, the bearing 9A is fixed to the casing 8A with the screw 11 in a state where the bearing 9A is fitted in the casing 8A. Thereby, the fixed state with respect to the casing 8 of the bearing part 9 with which the thin part 911c was fitted in the opposing surface part 10 is maintained. Thereby, it can prevent that 9 A of bearing parts rotate in the reverse direction at the time of attachment to the casing 8A. Therefore, it is possible to prevent loosening of the fitting of the bearing portion 9 into the casing 8 due to vibration caused by the rotation of the impeller 7.
　〔実施形態３〕
　本発明の実施形態３について、図１０および図１１に基づいて以下に説明する。なお、説明の便宜上、上記実施形態１および２にて説明した構成要素と同じ機能を有する構成要素については、同じ符号を付記し、その説明を繰り返さない。 [Embodiment 3]
Embodiment 3 of the present invention will be described below with reference to FIGS. 10 and 11. For convenience of explanation, components having the same functions as those described in the first and second embodiments are given the same reference numerals, and the description thereof will not be repeated.
　実施形態１に係る送風機４において、図１０（特に図１０の（ｃ））に示すように、軸受部９は、ロック部９１４が突起８６に係止されることによってケーシング８に固定可能である（第１の固定構造）。また、実施形態２に係る送風機４Ａにおいて、図１１に示すように、軸受部９Ａは、ねじ１１によってケーシング８Ａに固定可能である（第２の固定構造）。 In the blower 4 according to the first embodiment, as shown in FIG. 10 (particularly, FIG. 10C), the bearing portion 9 can be fixed to the casing 8 by the locking portion 914 being locked to the protrusion 86. (First fixing structure). Further, in the blower 4A according to the second embodiment, as shown in FIG. 11, the bearing portion 9A can be fixed to the casing 8A by the screw 11 (second fixing structure).
　本実施形態３に係る送風機では、図１０の（ｃ）に示す送風機４において、軸受部９が、ロック部９１４および突起８６だけではなく、図１１に示すねじ１１と同様のねじ（図示せず）によってもケーシング８に固定可能であるように構成されている。このような送風機は、上記の第１の構造および第２の構造をともに備えている。 In the blower according to the third embodiment, in the blower 4 shown in FIG. 10C, the bearing portion 9 is not only the lock portion 914 and the protrusion 86 but also a screw (not shown) similar to the screw 11 shown in FIG. ) Is also configured to be fixed to the casing 8. Such a blower includes both the first structure and the second structure.
　これにより、軸受部９がケーシング８への取り付け時と逆方向に回転することを、より確実に阻止することができる。 This makes it possible to more reliably prevent the bearing portion 9 from rotating in the direction opposite to the direction when attached to the casing 8.
　〔まとめ〕
　本発明の態様１に係る空気調和機の室内機は、羽根車７、当該羽根車７を覆うケーシング８および前記羽根車７の回転軸（シャフト７１）の一端を回転可能に支持する軸受部９を有する複数の送風機４を備え、前記ケーシング８に、前記回転軸の両端側に開口する空気を吸い込むための吸込部８３が形成されるとともに、前記軸受部９が、円環状に形成された円環部９１１と、前記回転軸の一端を回転可能に支持する軸受９２とを有し、前記円環部９１１が、前記軸受９２の中心回りに回転することにより、前記ケーシング８における前記吸込部８３の周囲に嵌まり込む。 [Summary]
An indoor unit of an air conditioner according to aspect 1 of the present invention includes an impeller 7, a casing 8 that covers the impeller 7, and a bearing portion 9 that rotatably supports one end of a rotating shaft (shaft 71) of the impeller 7. A plurality of blowers 4 having a suction portion 83 for sucking air that opens to both ends of the rotating shaft, and the bearing portion 9 is formed in an annular shape. An annular portion 911 and a bearing 92 that rotatably supports one end of the rotating shaft are provided, and the annular portion 911 rotates around the center of the bearing 92 so that the suction portion 83 in the casing 8 is rotated. Fit around.
　上記の構成によれば、軸受部をケーシングに嵌め込んだときと逆方向に回転させることで、軸受部をケーシングから取り外すことができる。これにより、羽根車をケーシングから取り外すときに、羽根車の回転軸を軸受から引き抜く必要がない。それゆえ、羽根車をモータに接続された状態で取り外すことができる。また、軸受部がガタツキ無くケーシングに固定されるので、軸受の軸心を、ケーシングに正しく配置された羽根車の軸心と一致させることができる。したがって、良好なメンテナンス性と、羽根車および軸受の軸心の一致とを両立させることができる。 According to the above configuration, the bearing portion can be removed from the casing by rotating the bearing portion in the direction opposite to that when the bearing portion is fitted in the casing. Thereby, when removing an impeller from a casing, it is not necessary to pull out the rotating shaft of an impeller from a bearing. Therefore, the impeller can be removed while being connected to the motor. In addition, since the bearing portion is fixed to the casing without rattling, the shaft center of the bearing can be made to coincide with the shaft center of the impeller correctly disposed in the casing. Therefore, it is possible to achieve both good maintainability and coincidence of the shaft centers of the impeller and the bearing.
　本発明の態様２に係る空気調和機の室内機は、上記態様１において、前記ケーシング８に、対向する２つの面によって形成される対向面部１０が前記吸込部８３の周囲に複数設けられ、前記円環部９１１が、肉厚部９１１ａと、複数箇所において前記肉厚部９１１ａより厚みの薄い肉薄部９１１ｃとを有し、前記軸受９２の中心回りに回転することにより、前記肉薄部９１１ｃが前記対向面部１０に嵌まり込んでいてもよい。 The indoor unit of the air conditioner according to aspect 2 of the present invention is the above-described aspect 1, wherein the casing 8 is provided with a plurality of opposing surface portions 10 formed by two opposing surfaces around the suction portion 83, The annular portion 911 has a thick portion 911a and a thin portion 911c that is thinner than the thick portion 911a at a plurality of locations, and rotates around the center of the bearing 92, whereby the thin portion 911c is You may fit in the opposing surface part 10. FIG.
　本発明の態様３に係る空気調和機の室内機は、上記態様２において、前記肉薄部９１１ｃが前記対向面部１０に圧入されてもよい。 In the indoor unit for an air conditioner according to aspect 3 of the present invention, in the aspect 2, the thin part 911c may be press-fitted into the facing surface part 10.
　上記の構成によれば、軸受部をケーシングに強固に固定することができるとともに、より正確に羽根車および軸受の軸心を一致させることができる。 According to the above configuration, the bearing portion can be firmly fixed to the casing, and the impeller and the shaft center of the bearing can be matched more accurately.
　本発明の態様４に係る空気調和機の室内機は、上記態様１から３のいずれかにおいて、前記軸受９２が、前記回転軸の方向で前記羽根車７の外側に配置されていてもよい。 In the indoor unit for an air conditioner according to aspect 4 of the present invention, the bearing 92 may be disposed outside the impeller 7 in the direction of the rotation shaft in any of the above aspects 1 to 3.
　上記の構成によれば、軸受がケーシングの吸込部における空気の吸込みの効率を低下させることを抑制することができる。 According to the above configuration, it is possible to suppress the bearing from lowering the efficiency of air suction in the suction portion of the casing.
　本発明の態様５に係る空気調和機の室内機は、上記態様１から４のいずれかにおいて、前記軸受９２が、凸状に湾曲した複数の脚部（支持脚部９１３）によって前記円環部９１１に支持されていてもよい。 An indoor unit of an air conditioner according to aspect 5 of the present invention is the air conditioner according to any one of the aspects 1 to 4, wherein the bearing 92 is formed by a plurality of leg portions (support leg portions 913) curved in a convex shape. 911 may be supported.
　上記の構成によれば、軸受９２を支持する強度を高めることができる。 According to the above configuration, the strength for supporting the bearing 92 can be increased.
　本発明の態様６に係る空気調和機の室内機は、上記態様１から５のいずれかにおいて、前記軸受部９が前記ケーシング８に嵌まり込んだ、前記軸受部９の前記ケーシング８に対する固定状態を維持する固定状態維持部（ねじ１１，ロック部９１４）を有していてもよい。 The indoor unit of the air conditioner according to aspect 6 of the present invention is the air conditioner indoor unit according to any one of the aspects 1 to 5, wherein the bearing portion 9 is fitted into the casing 8 and the bearing portion 9 is fixed to the casing 8. It may have a fixed state maintenance part (screw 11, lock part 914) which maintains the above.
　上記の構成によれば、羽根車の回転による振動のために軸受部のケーシングへの嵌め込みが緩むことを防止できる。 According to the above configuration, it is possible to prevent the fitting of the bearing portion into the casing due to vibration caused by the rotation of the impeller.
　本発明の態様７に係る空気調和機の室内機は、上記態様１から６のいずれかにおいて、前記ケーシング８が、前記吸込部８３の周囲に設けられた、前記円環部９１１が嵌まる円環状の凸部（段差部８４）を有していてもよい。 The indoor unit of an air conditioner according to aspect 7 of the present invention is the air conditioner according to any one of the aspects 1 to 6, wherein the casing 8 is provided around the suction part 83 and the circular part 911 is fitted therein. You may have a cyclic | annular convex part (step part 84).
　上記の構成によれば、凸部に沿って容易に円環部を回転させることができる。 According to the above configuration, the annular portion can be easily rotated along the convex portion.
　〔付記事項〕
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。さらに、各実施形態にそれぞれ開示された技術的手段を組み合わせることにより、新しい技術的特徴を形成することができる。 [Additional Notes]
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.
　　１　室内機
　　４，４Ａ　送風機
　　７　羽根車
　　８，８Ａ　ケーシング
　　９，９Ａ　軸受部
　１０　対向面部
　１１　ねじ（固定状態維持部）
　７１　シャフト（回転軸）
　７２　延長軸（回転軸）
　８３　吸込部
　８４　段差部（凸部）
　８５ｃ　内面
　８６　突起
　９２　軸受
９１１　円環部
９１１ａ　肉厚部
９１１ｃ　肉薄部
９１３　支持脚部（脚部）
９１４　ロック部（固定状態維持部） DESCRIPTION OF SYMBOLS 1 Indoor unit 4,4A Blower 7 Impeller 8, 8A Casing 9,9A Bearing part 10 Opposite surface part 11 Screw (fixed state maintenance part)
71 Shaft (Rotating shaft)
72 Extension shaft (rotating shaft)
83 Suction part 84 Step part (convex part)
85c Inner surface 86 Protrusion 92 Bearing 911 Annular part 911a Thick part 911c Thin part 913 Support leg part (leg part)
914 Locking part (fixed state maintaining part)

Claims (7)

  1. 　羽根車、当該羽根車を覆うケーシングおよび前記羽根車の回転軸の一端を回転可能に支持する軸受部を有する複数の送風機を備え、
    　前記ケーシングには、前記回転軸の両端側に開口する空気を吸い込むための吸込部が形成されるとともに、
    　前記軸受部は、円環状に形成された円環部と、前記回転軸の一端を回転可能に支持する軸受とを有し、
    　前記円環部は、前記軸受の中心回りに回転することにより、前記ケーシングにおける前記吸込部の周囲に嵌まり込むことを特徴とする空気調和機の室内機。     An impeller, a casing that covers the impeller, and a plurality of blowers having a bearing portion that rotatably supports one end of the rotation shaft of the impeller,
    The casing is formed with a suction portion for sucking air that opens to both ends of the rotating shaft,
    The bearing portion includes an annular portion formed in an annular shape, and a bearing that rotatably supports one end of the rotating shaft,
    The indoor unit of an air conditioner, wherein the annular part is fitted around the suction part in the casing by rotating around the center of the bearing.
  2. 　前記ケーシングには、対向する２つの面によって形成される対向面部が前記吸込部の周囲に複数設けられ、
    　前記円環部は、肉厚部と、複数箇所において前記肉厚部より厚みの薄い肉薄部とを有し、前記軸受の中心回りに回転することにより、前記肉薄部が前記対向面部に嵌まり込むことを特徴とする請求項１に記載の空気調和機の室内機。     The casing is provided with a plurality of opposing surface portions formed by two opposing surfaces around the suction portion,
    The annular part has a thick part and a thin part thinner than the thick part at a plurality of locations, and the thin part fits into the facing surface part by rotating around the center of the bearing. The indoor unit for an air conditioner according to claim 1, wherein
  3. 　前記肉薄部は、前記対向面部に圧入されることを特徴とする請求項２に記載の空気調和機の室内機。 The indoor unit of an air conditioner according to claim 2, wherein the thin portion is press-fitted into the facing surface portion.
  4. 　前記軸受は、前記回転軸の方向で前記羽根車の外側に配置されていることを特徴とする請求項１から３のいずれか１項に記載の空気調和機の室内機。 The indoor unit of an air conditioner according to any one of claims 1 to 3, wherein the bearing is disposed outside the impeller in the direction of the rotation shaft.
  5. 　前記軸受は、凸状に湾曲した複数の脚部によって前記円環部に支持されていることを特徴とする請求項１から４のいずれか１項に記載の空気調和機の室内機。 The indoor unit of an air conditioner according to any one of claims 1 to 4, wherein the bearing is supported by the annular portion by a plurality of convexly curved legs.
  6. 　前記軸受部は、前記軸受部が前記ケーシングに嵌まり込んだ、前記軸受部の前記ケーシングに対する固定状態を維持する固定状態維持部を有していることを特徴とする請求項１から５のいずれか１項に記載の空気調和機の室内機。 The said bearing part has the fixed state maintenance part which maintains the fixed state with respect to the said casing with respect to the said casing with which the said bearing part fits in the said casing, Any one of Claim 1 to 5 characterized by the above-mentioned. The indoor unit of the air conditioner of Claim 1.
  7. 　前記ケーシングは、前記吸込部の周囲に設けられた、前記円環部が嵌まる円環状の凸部を有していることを特徴とする請求項１から６のいずれか１項に記載の空気調和機の室内機。 The air according to any one of claims 1 to 6, wherein the casing has an annular convex portion provided around the suction portion and into which the annular portion is fitted. The indoor unit of the harmony machine.
PCT/JP2018/032241 2018-03-08 2018-08-30 Indoor unit for air conditioner WO2019171626A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481107U (en) * 1977-11-19 1979-06-08
JPS5824494U (en) * 1981-08-10 1983-02-16 株式会社日立製作所 centrifugal blower
JPS58193086A (en) * 1982-05-06 1983-11-10 Toshiba Corp Heat exchanger
JPS61155694U (en) * 1985-03-19 1986-09-26
JPH09250770A (en) * 1996-03-19 1997-09-22 Daikin Ind Ltd Air conditioner
JP2002357330A (en) * 2001-03-27 2002-12-13 Toto Ltd Indoor air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481107U (en) * 1977-11-19 1979-06-08
JPS5824494U (en) * 1981-08-10 1983-02-16 株式会社日立製作所 centrifugal blower
JPS58193086A (en) * 1982-05-06 1983-11-10 Toshiba Corp Heat exchanger
JPS61155694U (en) * 1985-03-19 1986-09-26
JPH09250770A (en) * 1996-03-19 1997-09-22 Daikin Ind Ltd Air conditioner
JP2002357330A (en) * 2001-03-27 2002-12-13 Toto Ltd Indoor air conditioner

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