JP6843583B2 - Outdoor unit of air conditioner - Google Patents

Description

The present invention relates to an outdoor unit of an air conditioner, and more particularly to a top-blown type outdoor unit provided with a sheet metal bell mouth cover surrounding a resin bell mouth.

In recent years, due to growing needs for prevention of global warming and reduction of running costs, energy saving of air conditioners, which account for most of the energy consumption of stores and office buildings, has been promoted. As a means for reducing the power consumption of a heat pump type air conditioner using an electric motor, high performance and high efficiency of each component device such as a compressor, a heat exchanger, and a blower are pursued.

In addition, with the spread of convenience stores, etc., the number of outdoor units of air conditioners installed in residential areas has increased, and with the spread of high-rise condominiums, buildings that are often installed on the rooftops of buildings, etc. As the number of multi-package air conditioners for air conditioners is increasing, the noise generated from outdoor units tends to increase.
The noise sources of the air-cooled heat pump type air conditioner mainly include compressors and blowers, and various technologies have been developed.

Against this background, in addition to improving the efficiency and noise of the fans, consideration has also been given to improving the performance of the bell mouth, which is a top-blowing type outdoor unit that is often seen in multi-package air conditioners for buildings. There are many cases where a bell mouth with a complicated shape that uses a lot of R parts is adopted. From this point of view, bell mouths often use a resin material having a high degree of freedom in shape and excellent mass productivity.

On the other hand, the cover and frame members that make up the appearance of the housing of the outdoor unit are generally made of sheet metal members in consideration of strength, fire resistance, etc., but in recent years, from the viewpoint of cost reduction, Pre-painted pre-coated metal (hereinafter referred to as PCM steel plate) is often used. When using a PCM steel sheet, care must be taken such as rusting easily because the unpainted surface is exposed on the cut surface, and the end face of the PCM steel sheet is placed in a position where it cannot be seen from the appearance of the product, for example, inside other parts. is there. In particular, since the end faces of various sheet metal members such as covers, frames, and stays are located at the upper end of the housing of the outdoor unit, the end faces are often arranged inside the resin bell mouth.

However, since the outlet of the blower of the outdoor unit has the temperature after heat exchange by the heat exchanger, the outlet temperature range reaches -30 to + 60 ° C. in the case of a general multi-package air conditioner for buildings. For example, when the bell mouth is made of a general resin material, its coefficient of linear expansion is, for example, 10 × ^10-5 (1 / ° C.), and if the product width dimension is 1 m, the amount of dimensional change is 1 (m) x 10 x ^10-5 (1 / ° C) x temperature difference 90 (° C) = 9 (mm), thermal expansion and contraction between the resin bell mouth and the sheet metal parts that make up the cover and frame. Due to the difference in amount, there is a risk of damage to the screw fixing part.

With respect to the problem of damage due to the difference in the amount of thermal expansion and contraction between the resin bell mouth and the sheet metal member constituting the housing such as the cover and the frame, Japanese Patent Application Laid-Open No. 2012-42141 (Patent Document 1) The following measures are taken.
That is, in an air conditioner top-blown outdoor unit in which the outer edge of the resin bell mouth is bent along the upper end side of the housing, the bell mouth is thermally shrunk to the resin bell mouth. An expansion / contraction portion is provided to absorb the force acting on the contact portion with the housing. The elastic portion prevents the bell mouth made of resin from being damaged due to heat shrinkage.

Japanese Unexamined Patent Publication No. 2012-42141

When the bell mouth is provided with an elastic portion as in Patent Document 1, it is possible to absorb the heat shrinkage of the bell mouth. However, when the sheet metal parts constituting the housing such as the cover and the frame are arranged inside the resin bell mouth, the side surface of the bell mouth becomes an appearance protruding from the side surface of the housing by the thickness of the bell mouth or more. It ends up. In the case of a resin bell mouth, it is desirable to have a plate thickness of about 2 to 3 mm from the viewpoint of strength and molding surface, and if it is manufactured in consideration of the dimensional tolerance and assembly tolerance of molded products such as bell mouths and housings, The outer edge of the bell mouth has a shape that protrudes by several mm or more from the side surface of the housing, which is unfavorable in appearance.

Further, in order to improve sound insulation, fire resistance, safety against a rotating body, etc., there is an increasing number of cases where the bell mouth is surrounded by a sheet metal cover (hereinafter referred to as a bell mouth cover). In such a case, since it is not preferable in terms of strength to directly screw the bell mouth cover to the resin bell mouth, it is usually fixed to a sheet metal member on the housing side such as a cover or a frame.
However, since the outer edge of the bell mouth protrudes by several mm from the side surface of the housing, the bell mouth cover surrounding the outer circumference of the bell mouth becomes more protruding, and there is a problem that the appearance is significantly impaired.

An object of the present invention is to obtain an outdoor unit of an air conditioner capable of attaching a bell mouth cover without spoiling the appearance and absorbing thermal expansion and contraction of a resin bell mouth.

In order to solve the above problems, the present invention includes a housing made of a sheet metal member, a propeller fan installed on the upper portion of the housing, and a resin bell mouth provided around the propeller fan. In the outdoor unit of an air conditioner provided with a sheet metal bell mouth cover that surrounds the bell mouth, the bent portion formed on the outer peripheral side of the upper end portion of the housing and bent inward, and the lower end side of the bell mouth. The bell mouth is provided with the outer peripheral edge portion formed and the outer peripheral edge is bent downward, and the bell mouth is provided with the outer peripheral edge portion of the bell mouth in a recess formed by the bent portion of the housing. The bell mouth cover is arranged on the outer peripheral side of the bell mouth and attached to the housing.

According to the present invention, there is an effect that an outdoor unit of an air conditioner capable of attaching a bell mouth cover without spoiling the appearance and absorbing heat expansion and contraction of a resin bell mouth can be obtained.

The perspective view which shows Example 1 of the outdoor unit of the air conditioner of this invention. FIG. 5 is a plan view of the outdoor unit shown in FIG. 1 with the blowout net shown in FIG. 1 removed. A side sectional view of the outdoor unit shown in FIG. FIG. 3 is a perspective view of the outdoor unit showing a state in which the bell mouth cover is removed from the outdoor unit shown in FIG. FIG. 1 is an enlarged cross-sectional view of a main part of a bell mouth cover mounting portion in the outdoor unit shown in FIG. FIG. 3 is an enlarged cross-sectional view of a main part showing another example of the bell mouth cover mounting portion in the outdoor unit shown in FIG. FIG. 6 is a perspective view of a main part for explaining attachment of the front cover to the front stay shown in FIG. The front view which shows the conventional example of the outdoor unit of an air conditioner. The front view which shows the state which attached the bell mouth cover to the conventional outdoor unit shown in FIG. FIG. 9 is an enlarged cross-sectional view of a main part of a bell mouth cover mounting portion in the conventional outdoor unit shown in FIG. FIG. 5 is an enlarged cross-sectional view of a main part showing Example 2 of the outdoor unit of the air conditioner of the present invention, and is a view corresponding to FIG.

Hereinafter, specific examples of the outdoor unit of the air conditioner of the present invention will be described with reference to the drawings. In each figure, the parts with the same reference numerals indicate the same or corresponding parts.

Example 1 of the outdoor unit of the air conditioner of the present invention will be described with reference to FIGS. 1 to 10.
First, the overall configuration of the outdoor unit of this embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view showing Example 1 of the outdoor unit of the air conditioner of the present invention, FIG. 2 is a plan view of the outdoor unit shown in FIG. 1, and the blowout net shown in FIG. 1 is removed, FIG. Is a side sectional view of the outdoor unit shown in FIG. 1, and FIG. 4 is a perspective view of the outdoor unit showing a state in which the bell mouth cover is removed from the outdoor unit shown in FIG.

In these figures, reference numeral 1 denotes an outdoor unit of an air conditioner, which is a housing 2 made of a sheet metal member, a propeller fan 3 installed on the upper portion of the housing 2, and a resin material provided around the propeller fan 3. Bell mouth 4, a sheet metal bell mouth cover 5 that surrounds the bell mouth 4 from the upper end to the lower end on the outer peripheral side, heat exchangers 6 arranged on the back surface side and the side surface side in the housing 2, and the housing. It is provided with a refrigerating cycle component 7 such as a compressor installed on the bottom plate 2a of No. 2 and an electric component box 8 containing a control board and the like.

Sheet metal outer peripheral covers 21 are arranged on the four side surfaces of the housing 2. The outer peripheral cover 21 includes a front cover 21a, a side cover 21b, and a back cover 21c, and the side cover 21b and the back cover 21c have both side surfaces so as to form an opening for taking outside air into the heat exchanger 6. And it is provided only around the back surface.

Further, stays 22 (front stay 22a, back stay 22b) extending to the left and right are provided on the front portion and the rear portion of the upper portion of the housing 2, and a fan is further provided so as to be bridged between the front stay 22a and the back stay 22b. A support member (motor clamp) 23 that supports the motor 3a is provided.

The bell mouth cover 5 is composed of a front portion 5a made of a sheet metal member, left and right side surface portions 5b, and a back surface portion 5c.
Reference numeral 2b is a foot portion supporting the outdoor unit 1, and 9 is a wire blowing net (fan guard). As shown in FIG. 1, the blowing net 9 has a bell mouth cover 5 and is the bell mouth cover. 5 is attached to the front portion 5a and the back portion 5c, and as shown in FIG. 4, if the bell mouth cover 5 is not provided, it is attached to the fixing portion 4a provided at the upper end of the bell mouth 4. The fixing portion 4a is preferably fixed by a screw, but may be a fixing portion by engagement or fitting. Reference numeral 4b is an outer peripheral edge portion of the lower end of the bell mouth 4, 4c is a duct portion of the bell mouth 4, and 4d is a top plate portion of the bell mouth 4. Reference numeral 10 is a screw for fixing the bell mouth 4 with the top plate portion 4d, and 11 is a screw for fixing the bell mouth 4 with the outer peripheral edge portion 4b.

The propeller fan 3 arranged at the upper part of the housing is rotated by the fan motor 3a, and the external air sucked from the heat exchanger 6 arranged from the side surface to the back surface of the housing is heat exchanged by the heat exchanger 6. It is blown out above the bell mouth 4 arranged around the propeller fan 3. Therefore, the temperature of the air blown out from the bell mouth 4 changes by the amount of heat exchange, so that the temperature becomes higher during cooling and lower during heating. Therefore, the operating temperature range of the bell mouth 4 reaches from −30 ° C. to + 60 ° C.

On the other hand, since the bell mouth 4 is formed in a cylindrical shape so as to surround the outer periphery of the propeller fan 3 and has a smooth curved surface, it is manufactured by using a resin material in this embodiment. Further, as the outer peripheral cover 21 made of sheet metal constituting the housing 2, a PCM steel plate that has been pre-painted is often used from the viewpoint of cost. When a PCM steel plate is used for the outer peripheral cover 21, rust is likely to occur from the unpainted portion of the cut surface. Therefore, the cut surface at the upper end of the outer peripheral cover 21 is made of resin so that the cut surface is not wet with rain or the like. It is configured to be arranged inside the bell mouth 4.

However, as described above, since the operating temperature range of the bell mouth 4 is very wide, the amount of thermal expansion and contraction reaches several mm. Further, since the variation in the molding dimensions of the large resin molded product cannot be ignored, when the structure is such that the bell mouth 4 is simply covered on the housing, it is one size larger than the housing 2 as shown in FIG. Must be configured with dimensions. FIG. 8 is a front view showing a conventional example of an outdoor unit of an air conditioner.

On the other hand, in order to improve sound insulation, fire resistance, safety against a rotating body, and the like, the bell mouth 4 may be surrounded by a sheet metal bell mouth cover 5. Here, FIG. 9 shows an example of an outdoor unit of a conventional air conditioner in which the bell mouth 4 is surrounded by a sheet metal bell mouth cover 5. FIG. 9 is a front view showing a state in which the bell mouth cover 5 is attached to the conventional outdoor unit shown in FIG.
As shown in FIG. 9, when the bell mouth cover 5 is attached to the outdoor unit 1 having the structure shown in FIG. 8, the upper part of the housing 2 has a large protruding shape, which is not preferable in terms of appearance.

Therefore, FIGS. 1 to 1 show the structure of the outdoor unit of the air conditioner of the present embodiment in which the bell mouth cover 5 can be attached without spoiling the appearance and the heat expansion and contraction of the resin bell mouth 4 can be absorbed. This will be described with reference to FIGS. 4, 8 and 9, with reference to FIGS. 5 and 10. FIG. 5 is an enlarged cross-sectional view of a main part of the bell mouth cover mounting portion in the outdoor unit shown in FIG. 1, and FIG. 10 is an enlarged cross-sectional view of a main part of the bell mouth cover mounting portion in the conventional outdoor unit shown in FIG.

First, the mounting structure of the bell mouth 4 and the bell mouth cover 5 in the conventional outdoor unit shown in FIG. 9 will be described with reference to FIG. As shown in FIG. 10, the bell mouth 4 is formed on an outer peripheral edge portion (bell mouth side surface) 4b whose lower end side is bent downward, and the outer peripheral cover 21 (in this example, the side surface cover 21b) is formed. ) Is fitted from above on the outer peripheral side, and is fixed to the upper end surface of the outer peripheral cover 21 by a screw 10. Further, the bell mouth 4 is manufactured in consideration of dimensional tolerances and assembly tolerances of molded products such as the bell mouth 4 and the housing 2.

Therefore, as shown in FIGS. 8 and 9, the bell mouth 4 has a shape that greatly protrudes outward from the side surface (outer peripheral cover 21) of the housing, and the bell mouth cover 5 is arranged outside the protruding bell mouth 4. Therefore, it becomes a form that protrudes further outward.

Further, the bell mouth cover 5 is arranged so as to be able to absorb the thermal expansion and contraction of the bell mouth 4 so as to form a gap outside the outer peripheral edge portion 4b of the bell mouth 4, and is arranged below the outer peripheral edge portion 4b. It is fixed to the outer peripheral cover 21 by a screw 12. In consideration of thermal expansion and contraction of the bell mouth 4, it is necessary to form a sufficiently large gap between the outer peripheral edge portion 4b of the bell mouth 4 and the bell mouth cover 5. Therefore, as shown in FIG. 9, the bell mouth cover 5 protrudes larger than the outer peripheral cover 21 (for example, 10 mm or more), and the appearance of the outdoor unit 1 is impaired.

On the other hand, in this embodiment, as shown in FIG. 5, a bent portion 24 is formed in which the outer peripheral side of the upper end portion of the housing 2 is bent inward. That is, in the example shown in FIG. 5, the side cover 21c forming the housing 2 is bent inward to form the bent portion 24. A recess 25 is formed in the upper portion of the housing 2 by the bent portion 24, and the outer peripheral edge portion 4b of the bell mouth 4 is inserted into the recess 25 from above and arranged.

The gap between the outer peripheral surface of the bent portion 24 and the outer peripheral edge portion 4b of the bell mouth 4 absorbs dimensional tolerances and assembly tolerances of the bell mouth 4 and the housing 2, and thermal expansion and contraction of the bell mouth 4. It is formed to a size that allows it. Further, the bell mouth 4 is fixed to the upper end surface of the side cover 21b by a screw 10, but since the bent portion 24 has a structure that is easily deformed in the inward and outward directions of the housing 2, the heat shrinkage of the bell mouth 4 is described. It can also be absorbed by the bent portion 24, and the stress generated in the fixed portion of the screw 10 can be reduced.

According to this embodiment, since the outer peripheral edge portion 4b of the bell mouth 4 is arranged in the recess 25, the bell mouth 4 is placed on the same surface as the side surface of the housing 2 or the housing. It can be arranged inside the two sides. As a result, the bell mouth cover 5 that surrounds the bell mouth 4 from the lower end to the upper end and is separate from the housing 2 can be configured to have substantially the same size as the housing 2. That is, since the bell mouth cover is made of sheet metal, the thickness of the bell mouth cover is about 1 mm, so that the dimensions of the bell mouth cover 5 can be made substantially the same as those of the housing 2. Therefore, since the bell mouth cover 5 can be provided so as to be substantially flush with the housing 2, the bell mouth cover 5 can be attached without spoiling the appearance, and the heat expansion and contraction of the resin bell mouth 4 can be absorbed. It is possible to obtain an outdoor unit of an air conditioner that can be used.

Further, the bell mouth 4 is attached to the housing 2 so as to maintain confidentiality and prevent air leakage, as in the case without the conventional bell mouth cover, while the bell mouth cover 5 is attached to the housing. Since the body 2 is detachably configured by the screw 12, as shown in FIG. 4, even if the outdoor unit 1 is used with the bell mouth cover 5 removed, the air flowing in the outdoor unit 1 can be used. It is configured to ensure the confidentiality of the flow path and prevent wind leakage. Therefore, there is also an effect that the outdoor unit of the air conditioner having both specifications with and without the bell mouth cover 5 can be realized.

Another example of the bell mouth cover mounting portion shown in FIG. 5 will be described with reference to FIGS. 6 and 7. FIG. 6 is an enlarged cross-sectional view of a main part showing another example of the bell mouth cover mounting part in the outdoor unit shown in FIG. 1, and FIG. 7 is a perspective view of the main part explaining the attachment of the front cover to the front stay shown in FIG. is there.

In the example shown in FIG. 5 described above, a bent portion 24 is provided at the upper end of the side cover 21b of the housing 2 to form a recess 25, and the outer peripheral edge portion 4b of the bell mouth 4 is arranged in the recess 25. It is a thing. On the other hand, the example of FIG. 6 shows a preferable example as the structure of the bell mouth cover mounting portion on the upper end side of the front cover 21a (outer peripheral cover 21) of the housing 2.

Refrigeration cycle parts 7 such as an electric component box 8 and a compressor are collectively arranged on the front side of the housing 2 so as to be easily accessible when constructing or servicing an air conditioner. Therefore, the front cover 21a needs to have a removable structure.

Therefore, as described above, the front stay 22a made of sheet metal is provided inside the front cover 21a constituting the outer peripheral cover 21 of the housing 2 on the upper end side. As shown, the bell mouth 4 is fixed to the front stay 22a with screws 13, and the front cover 21a is fixed with screws 14. Further, the bell mouth cover 5 is arranged at a position that covers the bell mouth 4 from the upper end to the lower end and at a position where the front cover 21a can be attached and detached from the front, and the front stay 22a is arranged together with the bell mouth 4 by the screw 13. It is attached to.

As shown in FIGS. 6 and 7, a cut-up portion 26 (26a, 26b) is formed in the portion of the front stay 22a where the screws 13 and 14 are fixed, and the cut-up portion 26 has the screw 13 and. A screw hole for screwing 14 is formed.

By providing the cut-up portion 26 on the front stay 22a in this way, these can be fixed in a state where the outer peripheral surface of the bell mouth cover 5 and the outer peripheral surface of the front cover 22a are aligned.

Further, since the cut-up portion 26 is easily deformed in a direction parallel to the cut surface (left-right direction in the example of FIG. 7), the bell mouth 4 can absorb thermal expansion and contraction in the left-right direction. Further, since the front stay 22a is long in the left-right direction, it is easily deformed in the front-rear direction. Therefore, it is possible to prevent excessive stress from being generated in the fixed portions of the screws 13 and 14.

In the example shown in FIG. 6, an inwardly bent bent portion 27 is formed on the upper end side of the front cover 21a constituting the housing, and an outer peripheral edge portion of the bell mouth 4 is formed on the outside of the bent portion 27. It is configured so that 4b is arranged. The upper end of the bent portion 27 is located below the cut-up portion 26a. Further, as in the example shown in FIG. 5, there is a dimensional tolerance and assembly between the outer peripheral edge portion 4b of the bell mouth 4 and the cut-up portion 26a and the bent portion 27, such as the bell mouth 4 and the housing 2. A gap is formed so as to absorb the tolerance and the thermal expansion and contraction of the bell mouth 4.

With respect to the front side of the housing 2, the bell mouth cover 5 can be provided so as to be substantially flush with the housing 2 by adopting the configurations shown in FIGS. 6 and 7 described above, which impairs the appearance. It is possible to attach the bell mouth cover 5 without the need, and it is possible to obtain an outdoor unit of an air conditioner which can absorb the thermal expansion and contraction of the resin bell mouth 4 and has excellent serviceability.

As shown in FIG. 3, a back stay 22b is provided on the back side of the housing 2, so that a bent portion 24 as shown in FIG. 5 is formed on the back stay 22b to form a bell mouth 4 The outer peripheral edge portion 4b of the bell mouth cover 5 and the bell mouth cover 5 may be attached with screws.

Example 2 of the outdoor unit of the air conditioner of the present invention will be described with reference to FIG. FIG. 11 is an enlarged cross-sectional view of a main part showing the second embodiment, which corresponds to FIG. 5, and the structure other than the portion shown in FIG. 11 is the same as the structure of the outdoor unit of the first embodiment described above. , The description is omitted.

In the second embodiment, as shown in FIG. 11, the bell mouth cover is provided via a substantially L-shaped mounting member 15 for mounting the bell mouth cover 5 with respect to the configuration of the portion shown in FIG. 5 in the first embodiment. It is configured to fix 5. A screw hole 15a for mounting a screw is formed in advance in the mounting member 15.

In this embodiment, before attaching the bell mouth cover 5, the attachment member 15 is fixed together with the bell mouth 4 to the upper end surface of the outer peripheral cover 21 (side cover 21b in this example) with screws 10. Similar to the example shown in FIG. 5, the outer peripheral edge portion 4b of the bell mouth 4 is arranged in the recess 25 formed by the bent portion 24 on the upper end side of the outer peripheral cover 21.

Next, the bell mouth cover 5 is fitted into the upper part of the outer peripheral cover 21 constituting the housing 2 from above, and is fixed to the mounting member 15 with screws 16.

As shown in FIG. 4, this embodiment is particularly effective when the unit without the bell mouth cover is used as a standard outdoor unit and the bell mouth cover 5 is attached as an option.
That is, when a standard outdoor unit without a bell mouth cover is adopted, if the structure of Example 1 shown in FIG. 5 is adopted, no screw hole is provided at the position of the screw 12, so that the screw hole is not provided at the site. Drilling work is required to provide screw holes in the outer peripheral cover 21 (side cover 21b). On the other hand, if the structure of the second embodiment shown in FIG. 11 is adopted, the on-site drilling work becomes unnecessary by using the mounting member 15.

Further, in the one shown in FIG. 5, the on-site drilling work on the outer peripheral cover 21 and the work of tightening the screws 12 become particularly difficult when the outdoor unit 1 is installed adjacently. On the other hand, if the second embodiment is adopted, the bell mouth cover 5 can be easily attached even when the outdoor unit 1 is installed adjacent to the outdoor unit 1.

Even if the configuration is as in the second embodiment, the same effect as that of the first embodiment can be obtained, and even when the bell mouth cover 5 is attached as an option, on-site drilling work is not required, and the workability is excellent. An outdoor unit of an air conditioner can be obtained.

The present invention is not limited to the above-described examples, and includes various modifications. Further, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations.

1: Outdoor unit,
2: Housing, 2a: Bottom plate, 2b: Foot,
21: Outer cover, 21a: Front cover, 21b: Side cover, 21c: Back cover,
22: Stay (22a: front stay, 22b: back stay),
23: Support member (motor clamp), 24, 27: Bent part, 25: Recessed part,
26, 26a, 26b: cut-up part,
3: Propeller fan, 3a: Fan motor,
4: Bell mouth, 4a: Fixed part, 4b: Outer peripheral part (side surface of bell mouth),
4c: Duct part, 4d: Top plate part,
5: Bell mouth cover, 5a: Front part, 5b: Side part, 5c: Back part,
6: Heat exchanger, 7: Refrigeration cycle parts, 8: Electrical parts box,
9: Blowing net, 10-14, 16: Screw,
15: Mounting member, 15a: Screw hole.

Claims (8)

A housing made of sheet metal members, a propeller fan installed on the upper part of the housing, a resin bell mouth provided around the propeller fan, and a sheet metal bell mouth surrounding the bell mouth. In the outdoor unit of an air conditioner equipped with a cover
A bent portion formed on the outer peripheral side of the upper end portion of the housing and bent inward, and a bent portion.
The bell mouth is provided with an outer peripheral edge formed on the lower end side and the outer peripheral edge is bent downward.
The bell mouth is attached to the housing in a state where the outer peripheral edge portion of the bell mouth is arranged in the recess formed by the bent portion of the housing.
The bell mouth cover is arranged on the outer peripheral side of the bell mouth and attached to the housing .
The housing is provided with a sheet metal outer peripheral cover, and a sheet metal stay is provided inside the outer peripheral cover on the upper end side of the housing, and the stay is cut up toward the outside of the housing. An outdoor unit of an air conditioner, characterized in that a portion is formed and the bell mouth is screwed to the cut-up portion. The outdoor unit of the air conditioner according to claim 1.
The outdoor unit of the air conditioner is characterized in that the outer peripheral surface of the outer peripheral edge portion of the bell mouth is arranged so as to be flush with or inside the outer peripheral surface below the recess of the housing. .. The outdoor unit of the air conditioner according to claim 1.
An air conditioner characterized in that the outer peripheral surface of the outer peripheral edge portion of the bell mouth is arranged so as to be located between the outer peripheral surface of the bent portion and the outer peripheral surface below the recess of the housing. Outdoor unit. The outdoor unit of the air conditioner according to claim 1.
The outdoor unit of an air conditioner, wherein the bell mouth cover is fixed to the cut-up portion together with the bell mouth. The outdoor unit of the air conditioner according to claim 1.
The bell mouth cover is detachably attached to the housing, and the bell mouth is attached to the housing so as not to leak air even when the bell mouth cover is removed. The outdoor unit of the air conditioner. The outdoor unit of the air conditioner according to claim 5.
An outdoor unit of an air conditioner, characterized in that a fixing portion for attaching a resin or wire blowout net is provided at the upper end of the bell mouth. A housing made of sheet metal members, a propeller fan installed on the upper part of the housing, a resin bell mouth provided around the propeller fan, and a sheet metal bell mouth surrounding the bell mouth. In the outdoor unit of an air conditioner equipped with a cover
A bent portion formed on the outer peripheral side of the upper end portion of the housing and bent inward, and a bent portion.
The bell mouth is provided with an outer peripheral edge formed on the lower end side and the outer peripheral edge is bent downward.
The bell mouth is attached to the housing in a state where the outer peripheral edge portion of the bell mouth is arranged in the recess formed by the bent portion of the housing.
The bell mouth cover is arranged on the outer peripheral side of the bell mouth and attached to the housing.
The housing includes a sheet metal outer peripheral cover, the bent portion is formed on the sheet metal outer peripheral cover, and the bell mouth is fixed to an upper end surface or a side surface of the outer peripheral cover having the bent portion. ,
The outdoor unit of an air conditioner is characterized in that the bell mouth cover is fixed to the upper end surface of the outer peripheral cover together with the bell mouth via a substantially L-shaped mounting member. The outdoor unit of the air conditioner according to claim 7.
The outdoor unit of an air conditioner, wherein the bell mouth cover is fixed to the outer peripheral cover below the bent portion.

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