JP3322745B2 - Outdoor unit of air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit of an air conditioner, and more particularly to an improvement in a mounting structure of a blower support housed in a unit main body and the unit main body.

[0002]

2. Description of the Related Art A commonly used air conditioner is configured by connecting an indoor unit installed in a room to be air-conditioned and an outdoor unit installed in an outdoor part of a building via a refrigerant pipe, electric wiring, or the like. The outdoor unit is installed as close to the wall of the building as possible, so that it is not obstructed.

Conventionally, the unit main body of the outdoor unit is fixed at least along a bottom plate, a front panel fixed along a front edge of the bottom plate, and both side edges and a rear edge of the bottom plate. It is composed of a combination with a rear plate.

[0004] A heat exchanger, a blower, a compressor, a refrigerant pipe, an electric component box and the like are accommodated and arranged inside such a unit main body. The heat exchanger and the compressor are directly arranged and fixed on the bottom plate constituting the unit body, but the blower is constituted by a drive motor and a fan fitted to a rotating shaft of the drive motor, It cannot be mounted and fixed directly on the bottom plate.

That is, a blower support is fixed upright on a bottom plate, and a drive motor case of the blower is mounted on the support. Since the diameter of the fan, which is a rotating body, is larger than the diameter of the drive motor case, which is a fixed body, the motor case is attached to a substantially central portion in the vertical direction of the blower support so that uniform air is blown to the heat exchanger. It is supposed to do.

The blower support has a lower end attached to a bottom plate, and an upper end fixed to an upper piece or a heat exchanger of a unit body, and a top plate is placed on the locking portion to exchange heat. The upper and lower ends are fixed by holding the upper end of the support between the container or the unit body and the top plate.

[0007]

Although the structure for supporting the blower is reliable in this way, there is a problem in the structure for fixing the blower support to the unit body. That is, the blower support is formed by bending a metal plate by press working or the like, and employs a frame structure so as to obtain great rigidity. The lower end is firmly attached and fixed to the bottom plate by a fixing tool such as a screw.

However, as for the mounting structure of the upper end of the blower support, the upper end of the blower support is merely engaged with the upper piece of the unit body or the heat exchanger as described above. When the cover is not covered, the reliability of mounting and fixing the upper end portion of the blower support is extremely low, and the locked state of the locking portion may be released.

Then, it is conceivable to cover the top plate in a state where such a locked state is released, and there is a possibility that the support is assembled without fixing the upper end of the support. Even if assembled correctly, the reliability of the attachment and fixing of the blower support is extremely low. For example, when an impact such as a drop during transportation of a product is applied, the blower support deforms vertically and shifts left and right. . Therefore, the hook claw easily comes off the hole.

If the blower is driven in this state, the vibration accompanying the drive of the blower is transmitted to the contact portion between the blower support and the top plate, where the vibration noise is enlarged and radiated to the outside.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. It is an object of the present invention to provide a structure in which the upper end of a blower support is securely fixed to a unit body and can withstand an impact. It is an object of the present invention to provide an outdoor unit of an air conditioner with improved reliability.

[0012]

According to a first aspect of the present invention, an outdoor unit of an air conditioner comprises at least a combination of a bottom plate, a front panel having a top plate, and a rear plate. A unit main body, and a blower supporter disposed in the unit main body and supporting the blower are provided.
And, the rear plate, folded to be bent in the horizontal direction on the rear portion upper end
With a predetermined interval between the bent portion and a predetermined position of the bent portion
Formed in a pair of concave portions provided and a portion between the concave portions
One provided on both sides of the engagement piece portion and two recesses which are
A pair of claws and a predetermined distance along the width direction
And an engaging portion which is formed by cutting and raising the upper end at the upper end, and which is inserted into and engaged with the engaging piece of the rear plate at the opening end thereof; and The rear plate has a claw portion and a locking hole for locking , and the top plate portion has a rear surface side.
A hemming portion provided with a hole for engaging and fixing the
By inserting the upper end of the fan support into the bent part of the rear plate
The engaging portion and the locking hole of the blower support are
The engaging piece and the claw are respectively engaged and fixed.
Place the top plate on the engagement part of the support, and the locking claw on the back side of the rear plate
By locking the hole of the top plate, the top plate
While pressing down the support, the rear plate and top plate
A configuration for engaging and fixing is provided .

[0013] An outdoor unit of an air conditioner according to a second aspect of the present invention includes a unit main body composed of a combination of at least a bottom plate having a top plate, a front panel and a rear plate, and a blower disposed in the unit main body. And a blower support for supporting the blower , wherein the blower support has a predetermined position at an upper end portion .
A pair of recesses provided at predetermined intervals in the
The engagement piece and the two recesses formed in the part between the parts
And a pair of claw portions provided on the side portions, the rear plate,
A bent piece that is bent horizontally at the upper end of the back
Locking hole portion and the back portion upper end of the pawl portion and the locking of the engaging portion and the blower support for engagement by inserting the engagement piece of the fan support consists recess at a predetermined position of the song piece Along the width direction
Locking claw provided at regular intervals, the top plate portion
Has a hole for engaging and fixing on the back side.
The upper end of the blower support is inserted into the bent part of the rear plate.
By fitting, the engaging portion and the locking hole of the blower support are
The engaging piece and the claw of the bent piece of the rear plate are engaged and fixed respectively.
The top plate is placed on the engagement piece of the blower support.
And lock the hole of the top plate with the locking claw on the rear side of the rear plate.
When the top plate presses the blower support down,
In addition, a configuration is provided in which the rear plate and the top plate are engaged and fixed .

[0014]

[Action] In the first aspect of the invention, engaging the engaging portion of the fan support engagement piece portion of the rear plate, thereby locking the locking hole portion of the fan support claw portion of the rear plate, blower Place the ceiling on the support
Place the plate part and lock the hole of the top plate part with the locking claw on the back side of the rear plate
The top plate holds the blower support down
And fix the rear plate and the top plate together.
Equipped. Therefore, even if it receives a considerable impact, the blower support does not come off the unit body ,
The mutually locked state is reliably maintained.

In the second invention, the engaging piece of the blower support is provided.
It engaged to the engagement portion of the rear plate, thereby locking the claw portion of the fan support engaging hole of the rear plate fan support engagement piece on
Place the top plate on the back plate, and insert the holes in the top plate
By locking the part, the top part lowers the blower support
While holding the rear plate and the top plate together.
It was equipped with a configuration. Therefore, even if a considerably large impact is received, the blower support members do not come off from the unit main body , and the mutually locked state is reliably maintained.

[0016]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an exploded outdoor unit constituting an air conditioner. The unit body 1 is composed of a combination of a front panel 2, a rear plate 3, and a bottom plate 4.

The front panel 2 has a front portion 2a and a top plate portion 2b integrally bent, and is formed in an inverted L-shape in a side view. A bell mouth 5 is provided on the front surface 2a, and a blowout grill 6 is attached thereto.

The lower end edge of the front portion 2a is attached and fixed along the front portion of the bottom plate 4, and the hemming portion 2c is formed integrally with both side edges of the front portion 2a and both side edges of the top plate portion 2b. The rear plate 3 is adapted to engage with the opposite side edge.

The rear plate 3 comprises a back surface 3a and both side surfaces 3b and 3c which are integrally formed on both sides of the back surface, and are formed in a substantially U-shape in plan view. Back part 3a
The lower edges of both side surfaces 3b and 3c are attached and fixed along the side edges of the bottom plate 4, and are combined with the front panel 2 described above.

The back portion 3a and one side portion 3b are provided with a heat exchange air suction portion 7 having a large number of holes. An opening 8 for checking electrical components is provided on the other side, and a lid 9 that can be opened and closed is closed. A cutout 10 for mounting the packed valve is provided on this side surface.

A partition plate 11 is provided on the bottom plate 4 to divide the inside of the unit body 1 into two. The compressor 12 is arranged in one of the space chambers. Further, electrical components such as an electrical component box 13 containing an inverter and the like and a reactor 14 are arranged above the compressor 12.

In the other space, a heat exchanger 15 and a blower support 16 are arranged. The heat exchanger 15 is formed in a substantially L-shape in plan view, and is arranged along one side and the back of the bottom plate 4.

The blower support 16 is formed by forming a metal plate into a frame structure by, for example, press working, and a lower end thereof is attached and fixed to a portion near the heat exchanger 15 on the bottom plate 4, and an upper end thereof is described later. At the upper end of the rear plate 3.

A hole 16a is provided substantially at the center in the vertical direction, and a drive motor 18 constituting a blower 17 is inserted. The driving motor 18 has a mounting flange 18.
a is provided integrally, is superimposed on the mounting surface of the support 16, and is fixed to the support 16 via a fixing tool.

The blower 17 includes a drive motor 18
And a fan 19 fitted on the rotation shaft of the drive motor. The fan 19 is arranged to face the bell mouth 5 of the front panel 2.

FIG. 2 shows the assembled outdoor unit. The outlet grill 6 is exposed at the front face, the lid 9 is fitted to the side face so as to be openable and closable, and the packed valve 20 projects at the lower part.

Next, a description will be given of a structure for locking the blower support 16 and the rear plate 3 of the outdoor unit thus configured. As shown in FIG. 3, a bent piece 3d that is bent in the horizontal direction is integrally provided at the upper end of the rear portion 3a of the rear plate 3, and a pair of concave portions 21 and 21 are provided at predetermined positions at predetermined intervals. Be provided. That is, the concave portions 21 and 21
The portion between them is formed as the engagement piece 22.

Further, a pair of claw portions 23 are formed on the bent piece portion 3d of the rear plate 3 on both sides of the concave portions 21 and 21 so as to be cut and raised downward. On the other hand, at the upper end of the blower support 16, there is provided an engaging portion 24 which is cut and raised upward and whose open end faces the engaging piece 22. The engaging portion 24 is formed to have a size in which the engaging piece portion 22 can be inserted.

When the engaging piece 22 is inserted into the engaging portion 24, locking holes 25, 25 are provided at positions opposing the claws 23, 23. This locking hole 25
Is formed in a rectangular shape, and a dimension for locking the claw portion 23 is set.

With this configuration, when mounting and fixing the blower support 16 to the unit main body 1, the support 16 is fixed on the bottom plate 4, and then the upper end is already fixed to the bottom plate 4. It is inserted into the bent piece 3d of the rear plate 3.

As shown in FIG. 4, from the setting of the mutual positions, the engaging portions 24 provided on the blower support 16 are inserted into the engaging pieces 22 of the rear plate bent piece 3d, and are engaged and fixed. You.
At the same time, the locking holes 25 provided in the blower support 16 are fitted and engaged with the claws 23 provided in the rear plate bent piece 3d.

As shown in FIG. 5A, the blower support 1
6 is engaged and fixed to the engaging piece 22 of the rear plate bending piece 3d, and as shown in FIG.
6 is locked and fixed to the claw 23 of the rear plate bent piece 3d.

After the lower end of the blower support 16 is fixed to the bottom plate 4 via a fixing tool, and the above-described components such as the compressor 12 are fixed at predetermined positions, finally, the front panel 2 is fixed. And fix it.

In this state, the top panel 2b of the front panel 2 overlaps the rear panel 3a of the rear panel 3 and is locked and fixed. To be more specific, at the upper end of the rear portion 3a of the rear plate 3, a locking claw 26 is integrally provided at a predetermined interval along the width direction.

On the other hand, a hemming portion 2c is bent along the back side of the top plate portion 2b, and this hemming portion engages with the rear plate back portion 3a, and a locking claw 26 is provided in the hemming portion. The part 27 is locked.

The top plate portion 2b rests on the engaging portion 24 of the blower support 16, and the top plate portion 2b presses the blower support 16 downward. 3 is more firmly fixed.

Since the upper end of the blower support 16 is securely fixed to the rear plate 3 in this manner, the blower support 1
6 and the rear plate 3 alone, the locking and fixing is strong, and in the assembled state, the top plate 2b further strengthens the fixing.

Therefore, for example, even when an impact occurs due to a drop during transportation, the vertical deformation of the blower support 16 and the lateral displacement are also restricted. Therefore, the blower support 16 does not deviate from the mounting and fixing position, and there is no generation of noise due to the driving of the blower 17 as in the related art.

In the above embodiment, the engaging piece 22 and the claw 23 are provided on the rear plate 3, and the engaging portion 24 and the engaging hole 25 are provided on the blower support 16. However, the present invention is not limited to this.

For example, as shown in FIG. 6, the bent piece 3d of the rear plate 3 is provided with an engaging portion 24A formed of a concave portion, and rectangular locking holes 25A, 25A are provided on both sides thereof. Can be

On the other hand, a pair of cuts 21A, 21A are provided at the upper end of the blower support 16 from the ends thereof, and a protruding engagement piece 22A is formed therebetween. The claw portions 23A, 23A protrude from the upper surfaces of both sides.

As shown in FIG. 7, by inserting the upper surface of the blower support 16 into the lower surface of the rear plate bent piece 3d, the engagement piece 22A is put on and engaged with the engagement portion 24A. At the same time, the claws 23A, 23A are locked in the locking holes 25A, 25A. Therefore, the same operation and effect as those of the above embodiment can be obtained.

As a procedure for assembling the outdoor unit, as shown in FIG. 8, the heat exchanger 15 and the compressor 12 are attached and fixed at predetermined positions on the bottom plate 4 first. Naturally, the partition plate 11 and the lower end of the blower support 16 which are not shown in the drawings must also be attached.

The end plate 28 provided at the front end of the heat exchanger 15 has a length which protects the U pipe constituting the heat exchanger 15 and which is parallel to the rear plate side surface 3b. 2
8a and a protective piece 28b extending from this piece and obliquely bent so as to face the end of the U-pipe must be formed.

After all the components have been attached and fixed, the lower end of the rear plate 3 is attached and fixed to the bottom plate 4 as shown in FIG. 9, and finally the front panel 2 is attached. As described above, the top plate 2b of the front panel 2 is provided at the upper end of the rear plate 3.
The lower end of the front panel 2 is rotated with the hemming portion 2c formed on the back surface. That is, the claw portion 26 is provided on the rear surface 3a of the rear plate, the hole 27 provided on the hemming portion 2c is locked here, and the front panel 2 is rotationally biased.

On the other hand, a hemming portion 2c is also provided on the side edge of the front portion 2a of the front panel 2, so that the rigidity of the side edge is maintained. With the rotation of the front panel 2, the hemming portion 2c is brought into contact with the edge 3 of the rear plate side portion 3b and the heat exchanger 15.
Between the front panel 2 and the bottom plate 4.

Actually, as shown in FIG.
5 is provided integrally with the protection piece 28b that is bent obliquely, so that the front panel 2 is inserted even if it is slanted, and the tip of the hemming portion 2c is attached to the protection piece 28b. However, even if there is a contact, the guide is guided by this one side surface, and eventually comes to a predetermined position as shown by a two-dot chain line in the figure.

On the other hand, as in the conventional case shown in FIG. 11, an end plate T formed in an L shape in plan view
When a is parallel to the rear plate side surface portion 3b, if the front panel 2 is turned obliquely, the front plate 2 is easily caught on the tip of the end plate side piece Ta. If the rotation is forcibly performed, the hemming portion 2c or the end plate T is deformed, and complete assembly becomes impossible.

As described above, the front panel 2 and the rear plate 3 are not connected via the hinge mechanism, but the holes 27 of the front panel 2 are engaged with the claws 26 at the upper end of the rear plate 3. The front panel 2 is easily tilted at the time of rotation. In this regard, as described above with reference to FIGS. 9 and 10, by extending the protection piece 28 b to the end plate 28 of the heat exchanger 15, it is possible to reliably prevent the above-described problem.

As described above, the packed valve 20 projects from the lower part of the side surface of the unit body 1. Specifically, as shown in FIGS. 12 and 13, the packed valve 20 is provided on the bottom plate 4. A support plate 30 is provided, on which the packed valve 20 is mounted and fixed.

On the other hand, after the packed valve 20 is mounted and fixed to the packed valve support 30, the rear plate 3 is mounted. The recess 10 formed at the lower end of the packed valve 20 is in a state of surrounding the packed valve 20. .

However, in this state, the opening around the packed valve 20 between the concave portion 10 and the bottom plate 4 is conspicuous, and the inside is visible and the appearance is impaired. Not only that, noise due to driving leaks from this opening to the outside, and rainwater, dust, and small animals easily enter.

Conventionally, in order to close the opening, the lower part of the concave portion 10 of the rear plate side surface portion 3c is formed so as to bulge in a shape covering the opening. Was not turned.

Therefore, the decorative board 31 shown in FIG.
Attach. That is, the decorative plate 31 is integrally provided with locking pieces 32, 32 for locking to the upper end of the packed valve support 30 on both sides.

With these locking pieces 32, 32 locked to the packed valve support 30, the decorative plate 31 is
0, and shields most of the opening between the bottom plate 4 and the packed valve 20 and the recess 10.

Further, the decorative plate 31 has a pair of concave portions 3.
3, 33 are formed, and these recesses are close to the connection pipe of the packed valve 20, and shield most of the remaining opening.

As a result, the opening area can be easily reduced as compared with the conventional structure in which the opening cannot be sufficiently closed, so that the inside becomes less visible and the appearance is improved. To reduce external noise leakage and prevent infiltration of rainwater, dust and small animals.

Further, since the concave portion 33 is formed in the decorative plate 31, even when a gas charging coupler is mounted on the packed valve 20 in the assembling process, the decorative plate 31 can be used.
Can be securely attached to the packed valve 20 without obstruction, and gas charging can be ensured.

[0059]

As described above, according to the first aspect of the present invention, the engaging piece and the claw are provided on the rear plate, the engaging portion and the engaging hole are provided on the blower support, and the engaging piece is provided. the engagement portion and engaging the locking hole in the claw portion, on the engaging portion of the fan support
Place the top plate and engage the holes in the top plate with the locking claws on the rear side of the rear plate.
By stopping, the top plate holds down the blower support
Attached and fixed to engage the rear plate and top plate
The provided treasure, according to the second invention, provided an engaging piece and the pawl portion to the blower support, provided the engagement portion and the engaging hole in the rear plate, the engaging piece portion to the engagement portion, The claw portion is engaged with the locking hole , and the top plate is placed on the engagement piece of the blower support, and the rear plate is
By locking the hole of the top plate to the locking claw on the back side,
The top plate presses the blower support down, and
In any of the inventions, since the plate and the top plate are configured to engage and fix the plate and the top plate, the upper end of the blower support is fixed to the unit body, and the top plate lowers the blower support.
And firmly secure it to the blower support.
In addition to this, the engagement and fixation of the rear plate and the top plate portion are ensured, so that even if an impact is applied , the rear plate and the top plate can withstand the impact sufficiently, and an effect of improving reliability can be achieved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an outdoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view of an outdoor unit of the embodiment.

FIG. 3 is an exploded perspective view of the blower support and the rear plate of the embodiment.

FIG. 4 is a perspective view of the assembled blower support and rear plate of the embodiment.

FIG. 5A is a longitudinal sectional view illustrating an assembled state of a blower support, a rear plate, and a front panel. (B) is a longitudinal sectional view of a different part from FIG.

FIG. 6 is an exploded perspective view of a blower support and a rear plate in different embodiments.

FIG. 7 is a perspective view of the blower support and a rear plate in an assembled state of the embodiment.

FIG. 8 is a perspective view illustrating attachment of a component to a bottom plate in different embodiments.

FIG. 9 is a perspective view for explaining the assembly of the front panel to the rear plate in the embodiment.

FIG. 10 is a plan view for explaining the shape and structure of the heat exchanger end plate and the assembly of the front panel to the rear plate in the embodiment.

FIG. 11 is a plan view illustrating the shape and structure of a heat exchanger end plate and assembly of a front panel to a rear plate in a conventional example.

FIG. 12 is a perspective view illustrating a packed valve support structure according to another embodiment.

FIG. 13 is a perspective view illustrating the assembled packed valve support structure of the embodiment.

[Explanation of symbols]

4 bottom plate, 2 front panel, 3 rear plate, 1 unit body, 17 blower, 16 blower support, 22, 22A
… Engaging pieces, 23, 23A claw, 24, 24A engaging, 25, 25A locking holes.

Continued on the front page (56) References Japanese Utility Model Showa 60-2262 (JP, U) Japanese Utility Model Showa 64-51121 (JP, U) Japanese Utility Model Showa 53-111966 (JP, U) Japanese Utility Model Showa 61-185964 (JP) , U) JP-A 3-127133 (JP, U) JP-A 63-22529 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 5/00

Claims (2)

(57) [Claims] An air having at least a unit body composed of a combination of a bottom plate, a front panel provided with a top plate, and a rear plate, and a blower support disposed in the unit body and supporting a blower. In the outdoor unit of the conditioner , the rear plate is a bent piece that is bent horizontally at an upper end of a rear portion.
And a predetermined interval at a predetermined position of the bent piece portion.
Formed in a pair of concave portions and a portion between the concave portions.
That the engagement piece and a pair of <br/> claw portions provided on both sides of the concave parts, set at predetermined intervals along the width direction on the rear portion upper end
And a locking pawl to be kicked, the ventilator support is then cut-and-raised upwardly to the upper end portion forming,
Bei a locking hole portion for the claw portion and the locking of the engaging portion and the rear plate to be engaged with inserted to the engagement piece portion of the rear plate at its open end
For example, the top plate has on its back side, holes for engaging fixing provided
The upper end of the blower support is inserted into the bent piece of the rear plate.
As a result, the engaging portion and the locking hole of the blower support are
The engagement piece and the claw of the bent piece are respectively engaged and fixed, and further, the top plate is placed on the engagement of the blower support,
By locking the hole of the top plate with the locking claw on the rear side of the rear plate
When the top plate presses the blower support down,
An outdoor unit for an air conditioner, characterized by further comprising a structure for engaging and fixing a rear plate and a top plate . 2. An air having at least a unit main body composed of a combination of a bottom plate having a top plate, a front panel and a rear plate, and a blower support disposed in the unit main body and supporting a blower. In the outdoor unit of the conditioner, the blower support is provided at a predetermined position at an upper end portion with a predetermined interval.
And a pair of recesses provided between the recesses
Provided on both sides of the engagement piece portion and two recesses formed
And a pair of claw portions that, the rear plate, bent piece that is bent in the horizontal direction on the rear portion upper end
Parts and an engaging portion to be engaged by inserting the engagement piece of it the fan support from the recess at a predetermined position of the bent piece portion above
A locking hole for locking with a claw of the blower support, and a back surface
Locking claw provided at a predetermined interval along the width direction at the upper end
With the door, the top plate has on its back side, holes for engaging fixing provided
The upper end of the blower support is inserted into the bent piece of the rear plate.
As a result, the engaging portion and the locking hole of the blower support are
The engaging piece and the claw of the bent piece are respectively engaged and fixed, and the top plate is placed on the engaging piece of the blower support.
And lock the hole of the top plate with the locking claw on the rear side of the rear plate.
When the top plate presses the blower support down,
An outdoor unit for an air conditioner, further comprising a structure for engaging and fixing a rear plate and a top plate .