JP6463484B2 - Air conditioner fan motor anti-vibration structure and air conditioner indoor unit - Google Patents

Description

  The present invention relates to an air conditioner fan motor vibration isolation structure including a propeller fan and an air conditioner indoor unit.

  There is a conventional indoor unit of an air conditioner in which a propeller fan is installed at the upper part of the main body (for example, see Patent Document 1).

JP 2012-37085 A

  In the air conditioner of Patent Document 1, there is no disclosure about the point of suppressing the vibration of the rotation of the propeller fan, and the vibration of the propeller fan is transmitted to the main body, which may generate noise.

  In general, a structure for preventing vibration around the excitation source is effective for suppressing vibration. For this reason, in the air conditioner of patent document 1, the structure which surrounds the circumference | surroundings of the fan motor which drives a propeller fan with a vibration-proof rubber | gum, and fixes it to to-be-fixed places, such as a casing of an indoor unit on that, can be considered.

  However, in an air conditioner equipped with a propeller fan, it is required to make the gap between the propeller fan and the bell mouth surrounding the propeller fan uniform without variation from the viewpoint of configuring a fan with low noise and high blowing performance. It has been. For this reason, if the structure surrounding the fan motor is surrounded by anti-vibration rubber, the vibration of the fan motor cannot be completely blocked by the anti-vibration rubber. There was a problem that the gap between the propeller fan and the bell mouth changed and caused variation.

  The present invention has been made to solve the above-described problem, and suppresses transmission of vibration to the main body while maintaining a uniform gap between the propeller fan and the bell mouth even when there is vibration of rotation of the propeller fan. It is possible to obtain an air conditioner fan motor anti-vibration structure and an air conditioner indoor unit that can suppress noise.

The fan motor vibration-proof structure of the air conditioner according to the present invention includes a main body having a suction port at an upper part and a blower outlet at a lower part, a base constituting a part of the main body, and air sucked from the suction port as a blower outlet. A plurality of propeller fan assemblies that blow out, a mounting frame that is detachably disposed in the upper part of the main body, and that has a plurality of storage holes for storing the plurality of propeller fan assemblies arranged in the left-right direction, and a plurality of propeller fans The propeller fan assembly includes a propeller fan, a fan motor that drives the propeller fan, and a bell mouth body, and the bell mouth body is a propeller fan. A cylindrical portion surrounding the periphery of the motor, a fan motor fixing portion disposed in the center of the cylindrical portion, a connecting portion connecting the cylindrical portion and the fan motor fixing portion, and a propeller fan set stored in the storage hole The fan motor is fixed to and integrated with the fan motor fixing part of the bell mouth body and the propeller fan, and the propeller fan assembly is attached to each mounting part. The fan structure is configured by being attached to the attachment frame via the vibration isolation member at the portion, and the fan structure is attached to the base by the hook portion provided on the attachment frame.

  An indoor unit for an air conditioner according to the present invention includes the fan motor vibration-proof structure for the air conditioner.

  According to the present invention, since the propeller fan assembly in which the propeller fan, the fan motor, and the bell mouth body are integrated is attached to the attached member via the vibration isolating member, the vibration of the rotation of the propeller fan is prevented. Even if it exists, it can suppress the transmission of the vibration to a main body, keeping the clearance gap between a propeller fan and a bell mouth uniform, and can also suppress a noise.

It is a longitudinal cross-sectional view which shows the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. It is an external appearance perspective view which shows the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the indoor unit 100 upper part of the air conditioner according to Embodiment 1 of the present invention. It is a schematic longitudinal cross-sectional view of the indoor unit 100 back side upper part of the air conditioner which concerns on Embodiment 1 of this invention. FIG. 4 is an exploded perspective view of the fan structure 101 of FIG. 3. 1 is an exploded perspective view of a propeller fan assembly 50 and a mounting frame 10 of an indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention. It is a schematic longitudinal cross-sectional view of the propeller fan assembly 50 of the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. The (a) top view of the propeller fan 20 of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention and the (b) cross-sectional view cut along ZZ in the plan view are shown together. FIG. The (a) top view of the bell mouth body 40 of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention and the (b) cross-sectional view cut along ZZ in this plan view are shown together. It is a figure. It is a disassembled perspective view of the assembly part of the bell mouth body 40 and the fan motor 30 of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. It is a disassembled perspective view of the assembly part of the propeller fan assembly 50 and the attachment frame 10 of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. It is a disassembled perspective view for demonstrating attachment of the vibration isolator 60 with respect to the propeller fan assembly 50 of the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. It is sectional drawing of the attachment part to the attachment frame 10 of the propeller fan assembly 50 in the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing of the attachment part to the attachment frame 10 of the propeller fan assembly 50 of the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. It is the perspective view which looked at the propeller fan assembly 50 of the indoor unit 100 of the air conditioner concerning Embodiment 1 of this invention from the lower side. It is a top view of the state which attached the propeller fan assembly 50 of the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention to the attachment frame.

Embodiment 1 FIG.
<Basic configuration>
FIG. 1 is a longitudinal sectional view showing an indoor unit 100 of an air conditioner according to Embodiment 1 of the present invention. FIG. 2 is an external perspective view showing the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view of the upper part of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. In the first embodiment, the left side of FIG. 1 will be described as the front side of the indoor unit 100. Hereinafter, the configuration of the indoor unit 100 will be described with reference to FIGS.

(overall structure)
The indoor unit 100 supplies conditioned air to an air-conditioning target area such as a room by using a refrigeration cycle that circulates a refrigerant. A main body 100a of the indoor unit 100 includes a base 1 that is fixed to an indoor wall surface, and a design panel 5 that is attached to the front surface of the base 1. A suction port 2 for sucking room air into the interior is formed in the upper surface of the design panel 5, and conditioned air is air-conditioned on the lower surface of the design panel 5 (more specifically, on the lower side of the front portion of the design panel 5). The blower outlet 3 for supplying the area is formed with an opening.

  A fan structure 101 is disposed on the upper side in the main body 100a. The fan structure 101 is disposed on the air upstream side of the propeller fan assembly 50, which includes a propeller fan 20 that is a fan that sucks room air from the suction port 2 and blows conditioned air from the blowout port 3. And a filter assembly 70 that removes dust from the air sucked into the main body 100a by the propeller fan 20, and these are attached to the attachment frame 10 to form a unit. The propeller fan 20 is disposed on the downstream side of the suction port 2 and on the upstream side of the heat exchanger 90, and is configured by, for example, an axial flow fan or a diagonal flow fan.

  The main body 100a further includes a heat exchanger 90 that is disposed in an air path from the propeller fan 20 to the air outlet 3 and generates conditioned air by exchanging heat between the refrigerant and the room air. And the air path is formed in the main body 100a by these components.

  And as shown in FIG. 3, the design panel 5 is attached to the base 1 so that the front side and side surface side of the attachment frame 10 may be covered. Here, the configuration in which two filter assemblies 70 and two propeller fan assemblies 50 are arranged in the fan structure 101 is illustrated, but one may be arranged, or two or more plural may be arranged. .

  Next, the arrangement of the fan structure 101 in the indoor unit 100 will be described.

FIG. 4 is a schematic longitudinal sectional view of the upper part on the back side of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention.
As shown in FIGS. 3 and 4, the base 1 has a left support portion 1 a and a right support portion 1 b that protrude forward from the left and right sides of the base 1. The left and right sides of the mounting frame 10 have a concave left hook 11a and a right hook 11b that are open downward. The left hook 11a and the right hook 11b are supported by the left support 1a and the right support. The mounting frame 10 is supported by the base 1 by being hooked and placed on the upper part of the part 1b, and the fan structure 101 is attached to the base 1 by being positioned left and right.

  Next, the configuration of the fan structure 101 will be described.

FIG. 5 is an exploded perspective view of the fan structure 101 of FIG.
In the fan structure 101, the mounting frame 10 has storage holes 10a penetrating in the vertical direction at two locations on the left and right in this example, and the propeller fan assembly 50 is stored in each storage hole 10a. Further, the upper side of the mounting frame 10 is an installation space for the filter assembly 70, and the front side of the installation space for the mounting frame 10 is opened as an insertion port for the filter assembly 70. The left and right ends and the rear end of the mounting frame 10 are formed in a rail shape. With the above configuration, the filter assembly 70 is pushed in along the rail shape from the front side to the rear side of the installation space, and is pushed into the rear end of the rail shape to be stored in the installation space. .

  A central portion of the mounting frame 10, that is, a portion between the storage holes 10a has a groove shape with an open upper surface, and a brush assembly 71 that removes dust adhered to the filter assembly 70 in the groove shape portion. Is stored. The brush assembly 71 is fixed to the groove-shaped portion by closing the brush front cover 72. In addition, an electrostatic dust collecting portion 73 that performs electrostatic dust collection is disposed on the right side of the mounting frame 10.

  Next, the configuration of the propeller fan assembly 50 will be described.

FIG. 6 is an exploded perspective view of propeller fan assembly 50 and mounting frame 10 of indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. FIG. 7 is a schematic longitudinal sectional view of the propeller fan assembly 50 of the indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention.
The propeller fan assembly 50 drives the propeller fan 20, the bell mouth body 40 that surrounds the periphery of the propeller fan 20 and smoothly guides intake and exhaust of the propeller fan 20, the vibration isolation member 60, and the propeller fan 20. The fan motor 30 is provided. The propeller fan assembly 50 is housed in the housing hole 10a of the mounting frame 10 and is fixed to the mounting frame 10 by screws 60a (see FIG. 12 described later) of the vibration isolation member 60 described later.

FIG. 8: is (a) top view of the propeller fan 20 of the indoor unit 100 of the air conditioner concerning Embodiment 1 of this invention, and (b) sectional drawing cut | disconnected by ZZ of this top view. It is the figure shown collectively.
The propeller fan 20 includes a cylindrical central boss portion 20a whose one end opening is closed, and a moving blade portion 20b formed to extend radially outward from the outer peripheral surface of the central boss portion 20a. A shaft hole 20c for a fan motor is formed at the center of the central boss portion 20a.

9A is a plan view of the bell mouth body 40 of the indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention, and FIG. 9B is a sectional view taken along the line ZZ in FIG. FIG. FIG. 10 is an exploded perspective view of an assembly portion of the bell mouth body 40 and the fan motor 30 of the indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention.
Bellmouth 40 includes a cylindrical cylinder portion 40a, and a fan motor fixing part 40b provided at the center portion of the cylindrical portion 40a, and a plurality of connecting portions 40c connecting the cylindrical portion 40a and the fan motor fixing part 40b Have The connecting portion 40c extends radially from the outer periphery of the fan motor fixing portion 40b and is curved, and then connected to the cylindrical portion 40a. As shown in FIG. 10, the fan motor fixing portion 40b has a cylindrical shape with the lower end opening closed, and screw bosses 40f are formed on the outer peripheral surface at equal pitches here at three locations.

Further, the upper end opening side of the cylindrical portion 40a protrudes outward in the radial direction to form a flange portion 40d. A plurality of mounting portions 40e are formed on the outer peripheral portion of the flange portion 40d so as to protrude outward in the radial direction and have screw insertion holes at equal pitch intervals in the circumferential direction. The four attachment portions 40e are formed here, but are not limited to four and may be three or more. Further, on the outer peripheral portion of the cylindrical portion 40a, while holding the lead 51 for supplying power to the fan motor 30 (FIG. 15 described later) more collectively, lead pull-out portion 40h for drawing the cylindrical portion 40a outside Is formed.

  Then, in assembling the propeller fan assembly 50, first, the fan motor 30 and the bell mouth body 40 are fixed as shown in FIG. That is, the bottom surface side of the motor body 30a of the fan motor 30 is housed in the fan motor fixing portion 40b, and each screw 31 is passed through the screw insertion hole of the mounting portion 30b provided on the outer periphery of the motor body 30a. The screw boss 40f is screwed into the screw hole. Thereby, the fan motor 30 and the bell mouth body 40 are fixed by screws.

  Then, as shown in FIG. 7, the shaft 30 c of the fan motor 30 is projected through the shaft hole 20 c of the central boss portion 20 a of the propeller fan 20, and the nut 21 is tightened on the protruding portion. Thereby, the propeller fan 20 and the fan motor 30 are fixed.

  As described above, the propeller fan 20, the bell mouth body 40, and the fan motor 30 are fixed, and the propeller fan assembly 50 is configured.

Here, the bell mouth body 40 has a configuration in which the fan motor fixing portion 40b and the cylindrical portion 40a are integrated with the connecting portion 40c. In other words, the position of the cylindrical portion 40a with respect to the fan motor fixing portion 40b is determined. It is fixed. The fan motor 30 is fixed to the propeller fan 20 and the bell mouth body 40 in a state where the upper and lower sides are covered by the central boss portion 20a of the propeller fan 20 and the fan motor fixing portion 40b of the bell mouth body 40. In FIG. 5, no vibration isolating rubber is provided around the fan motor 30. For this reason, the mutual position of the propeller fan 20 and the cylindrical part 40a is fixed. Therefore, it is possible to prevent the inconvenience that the gap between the propeller fan 20 and the cylindrical portion 40a is uneven as in the conventional structure in which the periphery of the fan motor is surrounded by anti-vibration rubber.

  And the vibration proof for suppressing the vibration transmission from the fan motor 30 to the main body 100a is performed in the attachment part to the attachment frame 10 of the propeller fan assembly 50. FIG. Hereinafter, the fan motor vibration isolation structure in the portion where the propeller fan assembly 50 is attached to the attachment frame 10 will be described.

FIG. 11 is an exploded perspective view of an assembly portion of the propeller fan assembly 50 and the mounting frame 10 of the indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention.
The mounting frame 10 has a flange storage recess 10b that can store the flange portion 40d of the bell mouth body 40 around the storage hole 10a. Further, the same number of four mounting storage recesses 10c as the mounting portions 40e of the bell mouth body 40 are formed on the outer periphery of the flange storage recess 10b for storing the mounting portions 40e of the propeller fan assembly 50. In a state where the propeller fan assembly 50 is housed in the housing hole 10a, the flange portion 40d of the propeller fan assembly 50 is accommodated in the flange housing recess 10b, and the mounting portion 40e is mounted together with the vibration isolating member 60 and the mounting housing recess 10c. It will fit within. With this configuration, air resistance can be reduced.

  The propeller fan assembly 50 accommodated in the accommodation hole 10 a of the attachment frame 10 is fixed to the attachment frame 10 via the vibration isolation member 60. Hereinafter, the configuration of the vibration isolation member 60 will be described with reference to FIG.

  FIG. 12 is an exploded perspective view for explaining attachment of the vibration isolation member 60 to the propeller fan assembly 50 of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. FIG. 13 is a cross-sectional view of a portion where the propeller fan assembly 50 is attached to the attachment frame 10 in the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. FIG. 14 is a schematic cross-sectional view of a portion where the propeller fan assembly 50 of the air conditioner indoor unit 100 according to Embodiment 1 of the present invention is attached to the attachment frame 10.

  The anti-vibration member 60 includes a combination of a screw 60a, a washer 60b, a spacer 60c, and a rubber 60d. The rubber 60d is attached to the inner surface of the screw insertion hole of the attachment portion 40e of the propeller fan assembly 50. Specifically, the rubber 60d is formed in a cylindrical shape as a whole, and two disk portions 60ba and 60bb protruding outward in the radial direction are spaced apart in the axial direction on the outer peripheral surface of the upper end portion in the axial direction. It is formed with a gap. And rubber | gum 60d is attached to the attachment part 40e by pinching | attaching the attachment part 40e in the clearance gap between the two disk parts 60ba and 60bb.

  A cylindrical spacer 60c is inserted inside the rubber 60d. The spacer 60c is formed longer than the rubber 60d, and both the spacer 60c and the rubber 60d are in contact with the bottom surface 10ca of the mounting housing recess 10c, so that the upper end of the spacer 60c is higher than the upper end of the rubber 60d. Protruding. A washer 60b is disposed at the upper end of the spacer 60c protruding upward from the rubber 60d.

  A screw boss 10cb protrudes downward from the bottom surface 10ca of the mounting housing recess 10c, and the screw 60a is inserted through the washer 60b and the spacer 60c and screwed to the screw boss 10cb. Thereby, the bell mouth body 40 and the attachment frame 10 are fixed by screwing.

  In this way, in the state where the screw 60a is screwed to the screw boss 10cb, the washer 60b contacts the spacer 60c, but does not contact the rubber 60d but has an upper gap 60e between the rubber 60d. Further, the disk portion 60bb on the lower side of the rubber 60d has a lower clearance 60f between the mounting housing recess 10c.

  With this configuration, the bell mouth body 40 and the propeller fan assembly 50 are supported only by the rubber 60d and do not directly contact the mounting frame 10. For this reason, the vibration of the propeller fan 20 due to the rotation of the fan motor 30 can be prevented from being transmitted to the main body 100 a via the mounting frame 10. Here, since the propeller fan assembly 50 is attached to the main body 100a after being attached to the attachment frame 10, an example in which the attached member of the propeller fan assembly 50 is the attachment frame 10 is shown. The member to be attached is not limited to the attachment frame 10 and can be appropriately selected according to the structure in the main body 100a.

Further, as shown in FIGS. 13 and 14, an annular seal member 41 is disposed on the lower surface of the flange portion 40d, and the air sucked from the suction port 2 does not flow into the cylindrical portion 40a, but the cylindrical portion 40a. It tries to prevent leaking outside.

The air that flows into the inside of the cylindrical portion 40a is sucked into the propeller fan 20 and becomes an air flow toward the heat exchanger 90, but the air that leaks outside the cylindrical portion 40a may not go to the heat exchanger 90, The heat exchange efficiency is reduced. For this reason, the sealing member 41 is provided to close the gap between the flange portion 40d of the cylindrical portion 40a and the mounting frame 10 so that air does not leak. By providing the seal member 41 in this manner, the cylindrical portion 40a and the mounting frame 10 come into contact with each other via the seal member 41. The seal member 41 has a small compressive load, for example, foaming of an EPDM mixture. The vibration of the cylindrical portion 40a is not transmitted to the mounting frame 10 via the seal member 41.

  FIG. 15 is a perspective view of propeller fan assembly 50 of indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention as viewed from below. FIG. 16 is a plan view of a state in which the propeller fan assembly 50 of the indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention is attached to the attachment frame 10.

A lead 51 for supplying power to the fan motor 30 is connected to the fan motor 30 of the propeller fan assembly 50. The lead 51 is drawn outward from the bottom surface of the fan motor fixing portion 40 b of the propeller fan assembly 50, is drawn along the connecting portion 40 c of the bell mouth body 40, and moves to the side of the propeller fan assembly 50. Pulled out. The lower surface (upper surface in FIG. 15) of the connecting portion 40c is covered with a cover 52 for placing the lead 51 along the connecting portion 40c, and the lead 51 is accommodated between the cover 52 and the lower surface of the connecting portion 40c. Thus, the lead 51 is configured not to sag. The lead 51 is pulled out to the side of the propeller fan assembly 50 from a lead lead-out portion 40h provided on the outer peripheral portion of the cylindrical portion 40a.

  As shown in FIG. 16, the lead 51 drawn out to the side of the propeller fan assembly 50 is passed through a lead support portion 12 provided in the mounting frame 10. 15 and 16, for the sake of illustration, the number of leads 51 is three, but the number of leads 51 is not limited to this number.

  The proper mounting direction of the propeller fan assembly 50 with respect to the mounting frame 10 is determined based on the lead 51 routing. Specifically, as shown in FIG. 16, the lead lead-out portion 40 h of the propeller fan assembly 50 is oriented near the lead support portion 12. The bell mouth body 40 is provided with a positioning projection 40g protruding outward from the flange portion 40d so that the propeller fan assembly 50 can be mounted on the mounting frame 10 in the normal mounting orientation at the time of assembly. The mounting frame 10 is formed with a recess 10d into which the positioning projection 40g is fitted. With this configuration, when the positioning projection 40g is fitted into the recess 10d, the mounting direction of the propeller fan assembly 50 with respect to the mounting frame 10 can be positioned in the normal mounting direction shown in FIG.

As described above, according to the first embodiment, the propeller fan assembly 50 in which the propeller fan 20, the fan motor 30, and the bell mouth body 40 are integrated using the three or more vibration isolation members 60. It was set as the structure attached to the attachment frame 10 which is a to-be-attached member. For this reason, even if there is rotational vibration of the propeller fan 20, it is possible to suppress the transmission of vibration to the mounting frame 10 while keeping the gap between the propeller fan 20 and the cylindrical portion 40a uniform. In addition, since the vibration transmission can be suppressed, the generation of noise can be suppressed.

Further, since the arrangement an annular seal member 41 on the rear surface of the flange portion 40d of the cylindrical portion 40a, the air sucked from the suction port 2 can be prevented from leaking to the outside of the cylindrical portion 40a without entering the cylindrical portion 40a . As a result, it can suppress that the flow rate of the air which passes the heat exchanger 90 falls, and can suppress the fall of heat exchange efficiency.

Further, since the positioning projection 40g is provided in the cylindrical portion 40a and the recess 10d in which the positioning projection 40g is fitted is provided in the mounting frame 10, the propeller fan assembly 50 is properly attached in consideration of the lead 51 routing. Can be easily installed in the direction.

  Moreover, since the attachment part 40e of the bell mouth body 40 is housed in the attachment housing recess 10c together with the vibration isolating member 60, the attachment part 40e and the vibration isolating member 60 can be prevented from becoming air resistance.

1 base, 1a left support, 1b right support, 2 suction port, 3 outlet, 5 design panel, 10 mounting frame, 10a storage hole, 10b flange storage recess, 10c mounting storage recess, 10ca bottom surface, 10cb screw boss, 10d hollow, 11a left hook, 11b right hook, 12 lead support, 20 propeller fan, 20a central boss, 20b blade, 20c shaft hole, 21 nut, 30 fan motor, 30a motor body, 30b mounting part , 30c shaft, 31 screw, 40 bell mouth body, 40a cylindrical part , 40b fan motor fixing part, 40c connecting part, 40d flange part, 40e mounting part, 40f screw boss, 40g positioning protrusion, 40h lead drawing part, 41 seal Member, 50 propeller fan assembly, 51 lead, 52 cover, 60 anti-vibration member, 0a Screw, 60b Washer, 60ba Disk part, 60bb Disk part, 60c Spacer, 60d Rubber, 60e Upper gap, 60f Lower gap, 70 Filter assembly, 71 Brush assembly, 72 Brush front cover, 73 Electric dust collecting part, 90 Heat exchanger, 100 indoor unit, 100a main body, 101 fan structure.

Claims (7)

A main body having a suction port at the top and a blow-off port at the bottom;
A base constituting a part of the main body;
A plurality of propeller fan assemblies that blow out the air sucked from the suction port to the air outlet;
A mounting frame that is detachably disposed at an upper portion in the main body, and in which a plurality of storage holes for storing the plurality of propeller fan assemblies are formed side by side;
A heat exchanger disposed on the air downstream side of the plurality of propeller fan assemblies,
The propeller fan assembly is:
A propeller fan, a fan motor that drives the propeller fan, and a bell mouth body;
The bell mouth body includes a cylindrical portion surrounding the periphery of the propeller fan, a fan motor fixing portion disposed at a central portion of the cylindrical portion, a connecting portion that connects the cylindrical portion and the fan motor fixing portion, Three or more attachment portions for attaching the propeller fan assembly housed in the housing hole to the attachment frame;
The fan motor is fixed and integrated with the fan motor fixing portion and the propeller fan of the bell mouth body,
The propeller fan assembly is attached to the attachment frame via a vibration isolation member at each attachment portion to form a fan structure, and the fan structure is formed by the hook portion provided on the attachment frame. Air conditioner fan motor anti-vibration structure attached to the The mounting portion protrudes radially outward from the end on the upper end opening side of the cylindrical portion, and is formed at an equal pitch in the circumferential direction.
The fan of the air conditioner according to claim 1, wherein the bell mouth body and the mounting frame are fixed by passing a screw of the vibration isolation member through a screw insertion hole of the mounting portion and screwing the screw to the mounting frame. Motor vibration isolation structure.   The cylindrical portion has a flange portion formed so as to protrude radially outward from an end portion on the upper end opening side, and an annular seal member that seals the gap in the gap between the flange portion and the mounting frame The fan motor anti-vibration structure for an air conditioner according to claim 1 or 2, wherein:   The cylindrical portion has a positioning projection, the mounting frame has a recess into which the positioning projection fits, and the propeller fan assembly is in a normal mounting orientation with respect to the mounting frame. The fan motor vibration-proof structure for an air conditioner according to any one of claims 1 to 3, wherein the positioning protrusion is fitted into the recess.   The mounting frame includes a mounting storage recess for storing the mounting portion of the bell mouth body, and the mounting portion of the bell mouth body fits in the mounting storage recess together with the vibration isolating member. The fan motor vibration-proof structure of the air conditioner as described in any one of Claims.   The air according to any one of claims 1 to 5, wherein the connecting portion of the bell mouth body extends radially from an outer peripheral portion of the fan motor fixing portion and is connected to the cylindrical portion. Harmonic machine fan motor anti-vibration structure.   The indoor unit of the air conditioner provided with the fan motor vibration isolator structure of the air conditioner as described in any one of Claims 1-6.

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