JP2003106564A - Outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner contributing to reduction of cost by holding blowing efficiency by being furnished with a bell-mouth corresponding to dissimilar fan diameters and commonly using a kind of an outdoor unit body even for specifications different in air conditioning capacity. SOLUTION: A heat exchanger 8 and a blower 10 to be replaced in accordance with air conditioning capacity are arranged in the outdoor unit body 1 to be commonly used even in specifications of the different air conditioning capacity, the bell-mouth 6 is provided on a diffuser 7 provided against a blowing direction of a blower, the bell-mouth is constituted of a first bell-mouth 16 mounted in correspondence with a standard blower 10A and a second bell-mouth 26 mounted on an opening part in correspondence with a blower 10B of an air conditioning capacity specification ranked lower than a standard and furnished with a ring shielding part 26b to shield a bell-mouth part 26a and the diffuser from each other, and the first and second bell-mouths are mounted by selecting them in correspondence with a diameter of a fan of the blower.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner outdoor unit having an improved air guide structure.

[0002]

2. Description of the Related Art A commonly used air conditioner comprises an indoor unit arranged in an air-conditioned room and an outdoor unit arranged outdoors. Refrigerant piping and electric wiring are connected between these indoor and outdoor units. It

In the above outdoor unit, the inside of the outdoor unit main body, which is the casing, is partitioned by a partition plate, and the space is used as a heat exchange chamber, and an outdoor heat exchanger and a blower are arranged. On the other hand, a compressor, a refrigerant pipe, an electric parts box and the like are arranged with the space as a machine room.

The blower is equipped with, for example, a propeller fan having a large blowing amount and good blowing efficiency, and is fitted to the rotating shaft of the fan motor. The outdoor heat exchanger is arranged on the suction side, and an outlet provided on the wall surface of the outdoor unit body is opened on the outlet side.

In a general household air conditioner, only one outdoor unit blower is arranged, but in a medium-sized air conditioner called commercial use, the outdoor heat exchanger has a vertically long shape, so the blower Two units are arranged side by side in the vertical direction.

In either type, a bell mouth is provided along the peripheral edge of the outlet, and a propeller fan of a blower is inserted therein. The propeller fan rotates in the bell mouth and is guided by the bell mouth.

[0007]

The existence of the bell mouth is one of the problems. In the normal configuration, along the periphery of the outlet opening on the front panel of the outdoor unit body,
The bell mouth is integrally molded.

In particular, when the bell mouth is formed as a separate part from the front panel, an opening is provided in the front panel to mount the bell mouth of a size determined by the diameter of the propeller fan. .

In the air conditioner having a standard air conditioning capacity and the air conditioner having an air conditioning capacity having a lower rank, one type of the outdoor unit body, which is a casing, is used in common so that the types of constituent parts can be changed. Is reduced, which contributes to cost reduction.

Further, for an air conditioner having a lower air conditioning capacity, a smaller amount of air is required for the blower, so a propeller fan having a diameter smaller than the standard may be used.
For that purpose, the structure of the front panel including the outlet and the bell mouth needs to be significantly changed, which adversely affects the cost.

The present invention has been made in view of the above circumstances, and its object is to replace a blower having a different fan diameter so as to be applied to an air conditioning capacity, and a bell corresponding to the blower fan can be used. An air conditioner outdoor unit that contributes to cost reduction by sharing the outdoor unit body with a mouse that maintains ventilation efficiency and has different air conditioning capabilities Is.

[0012]

In order to satisfy the above object, the present invention provides an outdoor unit body shared by an air conditioner having a standard air conditioning capacity and an air conditioner having an air conditioning capacity lower than the standard. , A blower in which a fan diameter is replaced by a fan having a different diameter according to the heat exchanger and the air conditioning capacity arranged in the outdoor unit main body, and an opening provided in the wall surface portion of the outdoor unit main body facing in the blowing direction of the blower A bell mouth provided in the opening for guiding the air blown out from the blower, wherein the bell mouth is attached to the opening corresponding to the standard blower adopted in the standard air conditioning capacity specification. The bell mouth and the blower with a fan diameter smaller than the standard and a fan diameter smaller than the standard are installed in the opening in correspondence with the bell mouth and the bell mouth and the circumference of the opening. It consists of a second bell mouth having a shield portion of the annular shields between, mounted selected to correspond with the first bell mouth and the second bell mouth to the fan diameter of the blower.

Further, the shielding portion of the second bell mouth is provided such that the inner diameter circle and the outer diameter circle are concentric, or the inner diameter circle is eccentric with respect to the outer diameter circle.

Further, the above-mentioned blowers are arranged in the vertical direction.
It is arranged on a table, the opening is provided so as to face each blower, and the second bell mouth is attached corresponding to at least one of the upper blower and the lower blower.

By adopting the means for solving such a problem, a blower having a different fan diameter is used according to the air-conditioning capacity, and the bell mouth corresponding to the blower fan at that time is used to maintain the blower efficiency. And even with specifications with different air conditioning capabilities, the outdoor unit itself can be shared by one type,
Contributes to cost reduction.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.
A description will be given with reference to the drawings. FIG. 1 is an outdoor unit that constitutes an air conditioner, and is a perspective view of disassembled components.

The outdoor unit body 1 made of a casing is in the shape of a vertically long rectangular box. The outdoor unit main body 1 uses a crosspiece (not shown) in which the left side surface and a part of the back surface in the figure intersect in a rectangular shape, and the inside of the main body 1 can be seen through. All the surfaces except the left side surface and the back surface on which the crosspiece is provided are formed of plate bodies.

A front surface of the outdoor unit main body 1 is provided with a first front panel 1b and the first front panel 1b in parallel.
It is divided into a second front panel 1c which is partially bent. Further, a bent panel 1d forming a right side surface and a part of the back surface is provided, and the main body peripheral surface is formed together with the crosspiece. The upper surface and the lower surface of this peripheral surface body have a top plate 1e and a bottom plate 1f.
The outdoor unit main body 1 is configured.

The interior of the outdoor unit main body 1 is divided into two parts by a partition plate 3. The fan guard 2 is attached to the first front panel 1b. One of the partition spaces in the outdoor unit main body 1 facing the fan guard 2 mounting portion is called a heat exchange chamber 4, and the other space not facing the fan guard is called a machine room 5.

The heat exchange chamber 4 is communicated with the outside from a part surrounded by a crosspiece, but the machine room 5 is surrounded by each plate body and is in a substantially sealed state. On the first front panel 1b, a blowout opening 7 which is a circular opening surrounded by a circular bell mouth 6 is opened, and the fan guard 2 is attached so as to cover the blowout opening 7. There is. The bell mouth 6 will be described later.

An outdoor heat exchanger 8 is arranged in the heat exchange chamber 4. The outdoor heat exchanger 8 is placed on the bottom plate 1f, and the height dimension thereof is designed to be substantially the same as that of the first front panel 1b. Then, it is formed in a substantially L shape in plan view so as to be along the crosspiece forming the right side surface and the back surface of the main body 1.

Further, a blower support 9 is arranged in the heat exchange chamber 4, and a blower 10 is mounted and supported on the blower support 9. The blower 10 includes a fan motor 11
And a propeller fan 12 fitted and fixed to the rotation shaft of the fan motor 11. This blower 10 will also be described later.

In the assembled state, the blower 10 is at a position facing the outlet 7, and the propeller fan 12 is inserted in the bell mouth 6 attached to the outlet to make a recirculation air inside the bell mouth.

On the other hand, a compressor 13 is arranged in the machine room 5, and an accumulator 14 is arranged side by side with the compressor 13. Further, a four-way valve and refrigerant pipes are housed around the compressor 13, and an electric parts box (not shown) is attached to the upper part of the machine room 5.

In the case of this embodiment, an outdoor unit configuration corresponding to an air conditioner having standard air conditioning capacity specifications is shown.
However, as will be described later, there are many parts shared with the outdoor unit in the air conditioner with the air conditioning capacity specification of the rank that is one step lower.

This is the outdoor unit of the air conditioner constructed as described above, and when the instruction to start the refrigeration cycle is given, the compressor 13 and the blower 10 are driven. The outside air is sucked into the outdoor unit main body 1 and flows through the outdoor heat exchanger 8 to perform a heat exchange action. Then, it is guided by the bell mouth 6 and blown out from the blowout port 7.

The bell mouth 6 includes a first bell mouth 16 as shown in FIGS. 2 to 4 and 6 to 8.
Two types of second bell mouths 26 and 36 are prepared, and either one can be attached as required.

FIG. 2 shows a front view of the outdoor unit. The air conditioner equipped with this outdoor unit is set to standard air conditioning capacity specifications. Therefore, the blower 10 having the standard air flow rate
A is placed at a predetermined position, and the first bell mouth 16 corresponding to the propeller fan 12A of the blower 10A is
It is attached to the outlet 7.

FIG. 3A shows a front view of the outdoor unit. An air conditioner equipped with this outdoor unit is set to an air conditioning capacity specification that is one rank lower. Here, a blower 10B having a smaller amount of blown air than the reference blower 10A is arranged, and a second bell mouth 26 having a configuration corresponding to the propeller fan 12B of this blower is attached to the outlet 7.

FIG. 3B shows a cross-sectional view of the blower 10B and its peripheral portion. The above standard blower 10A
On the other hand, the blower 10B with a small amount of air is generally small in size, the output of the fan motor (not shown) is smaller than the fan motor output of the reference blower 10A, and the diameter of the propeller fan 12B is the propeller fan 12 of the reference blower.
It is smaller than the diameter of A.

The outdoor unit body 1 of the above-described standard specifications is used as it is as the outdoor unit body 1 which is a casing. That is, even if the specifications of the air conditioning capacity are lowered, the outdoor unit body 1 is shared to reduce the cost.

In the small blower 10B having a small amount of blown air, the diameter of the propeller fan 12B is small, but since the front panel 1b of the outdoor unit body 1 is used as it is, the diameter of the blowout port 7 does not change at all. .

On the other hand, it is necessary to use a bell mouth corresponding to the propeller fan 12B having a small diameter in order to maintain the blowing efficiency, and the first bell mouth 16 cannot be used as it is.

That is, a propeller fan 1 having a small diameter
When 2B is inserted into the first bell mouth 16, a large gap is formed between the peripheral edge of the propeller fan 12B and the inner diameter surface of the first bell mouth 16, so that effective air guide cannot be performed.

Therefore, in the air conditioner with the air-conditioning capacity specification which is lowered by one rank, the second bell mouth 26 corresponding to the propeller fan 12B of the small blower 10B is used.

The second bell mouth 26 is a blower 10
Bell mouth part 26 into which propeller fan 12B of B is inserted
a and an annular shield portion (indicated by hatching, hereinafter the same) 26b formed integrally with the bell mouth portion.

That is, the bell mouth portion 26a has a size and shape having a predetermined gap with the diameter of the propeller fan 12B, and the shielding portion 26b is integrally formed along the periphery thereof. In other words, the bell mouth portion 26a is continuously provided on the inner diameter portion of the shielding portion 26b.

The outer diameter surface of the shielding portion 26b has an outlet 7
The bent piece portion 30 is integrally formed along the peripheral edge. Further, a hooking hole 31 is provided on the upper side of the bent piece portion 30, and a claw portion 32 provided on the shielding portion 26b is hooked. The lower end of the shield portion 26b is attached to the first via the mounting screw 33.
Is fixed to the front panel 1b.

In the case of the second bell mouth 26 having such a bell mouth portion 26a and the shield portion 26b, the shield portion 26b is a substitute for the first front panel 1b, and the bell mouth portion 26a is a blower fan. It has an original function corresponding to 12B.

Then, as described above, the outdoor unit main body 1 of the air conditioner of the standard air conditioning capacity rank is shared,
Since the front panel 1b is used as it is, the cost can be reduced.

In the second bell mouth 26 described above, an annular one in which the inner diameter and the outer diameter of the shield portion 26b are concentric is used, but the present invention is not limited to this, and as shown in FIG. The second bell mouth 36 may be used.

Even when this second bell mouth 36 is used, since the first front panel 1b constituting the outdoor unit body 1 is unchanged, the shielding portion of the second bell mouth 36 fitted into the outlet 7 is not changed. The outer diameter of 36b has the same size and shape as those described above.

Therefore, the center of the outlet 7 and the center of the outer diameter of the shield 36b are the same. On the other hand, the bell mouth portion 36a, which is the inner diameter of the shielding portion 36b, has its central axis on the upper side of the central axis of the outer diameter.

The second bell mouth 36 is attached to the small blower 10
By providing the original function for B and shifting the mounting position of the blower to the upper side, the distance between the peripheral edge of the propeller fan 12B and the bottom plate 1f of the outdoor unit body 1 is expanded as much as possible.

It is effective to employ such an outdoor unit in a cold region, for example. That is, in cold regions, the outdoor heat exchanger 8 may freeze excessively, and the outdoor unit body 1
It is easy for snow to accumulate on the bottom plate 1f. Therefore, it is conceivable that the peripheral edge of the blower fan 12 freezes due to ice and snow and falls into a non-rotatable state.

In the outdoor unit shown in FIG. 4, the mounting position of the blower 10B is shifted to the upper side to maximize the distance between the peripheral edge of the propeller fan 12B and the bottom of the main body 1, so that the propeller fan 12B is restrained by ice and snow. There is no risk of damage to the fan, and the incidence of problems such as damage to the fan or stoppage of operation is extremely low.

FIG. 5 is an exploded perspective view of an outdoor unit of a medium-sized air conditioner used for so-called commercial use. Although it is dimensionally different from the air conditioner for general households described above with reference to FIG. 1, since the basic configuration is the same, the same parts are designated by the same reference numerals and a new description will be omitted. Only the necessary parts will be described later. In addition, the crosspiece which is not shown in FIG. 1 is shown as 1a here.

In this air conditioner, as the compression performance of the compressor 13 increases, the heat exchange capacity of the heat exchanger 8 increases and becomes vertically long, and the blower support 9 and the blower 10 are provided.
Two a and 10b are mounted side by side in the vertical direction.

In accordance with this, the outdoor unit body 1 is lengthened in the vertical direction, and the first front panel 1b is provided with two outlets 7a and 7b side by side, and a fan is provided for each outlet. Guards 2a and 2b are attached.

The upper and lower blowers 10a and 10b are respectively fan motors 11a and 11b, and the propeller fan 12 fitted and fixed to the rotation shafts of the fan motors.
a, 12b.

Then, in the assembled state, the first and second
The blowers 10a and 10b are located at positions facing the outlets 7a and 7b. A part of the propeller fans 12a, 12b is attached to the outlets 7a, 7b and is a bell mouth 6
It is inserted in a and 6b, and makes a transfer wind in this bell mouth.

The following is a description of the air guide structure based on the configuration of the outdoor unit in the air conditioner shown in FIG. FIG. 6A shows an outdoor unit, which is an air conditioner having standard air conditioning capacity specifications, with a part of the front surface of the outdoor unit main body 1 omitted. Two blowers 10 arranged vertically
A is the standard one, and the first bell mouth 16 corresponding to this propeller fan 12A is
They are attached to the upper and lower outlets 7, respectively.

FIG. 6B shows the case of an air conditioner with an air-conditioning capacity specification that is one rank lower, and the fact that the outdoor unit body 1 with standard specifications is shared as it is does not change. Therefore, the first front panel 1b constituting the outdoor unit body 1
Is not changed either.

An air blower 10B with a small air flow is used,
The diameter of the propeller fan 12B is smaller than that of the standard, and the first bell mouth 16 is
If it is provided as it is, a gap will be formed between the first bell mouth 16 and the outlet 7.

Then, the second bell mouths 26 provided with the shielding portions 26b along the periphery of the bell mouth portions 26a are attached to the respective outlets 7. Since the mounting position of each blower 10B is not changed, the shield portion 26b has an annular shape whose inner and outer diameters are concentric.

Therefore, the shielding portion 26b substitutes for the first front panel 1b, and the bell mouth portion 26a has an original function corresponding to the propeller fan 12B. The first front panel 1b constituting the outdoor unit body 1 can be shared, and the cost can be reduced.

When the air conditioning capacity rank exists between the air conditioning capacity of the air conditioner shown in FIG. 6 (A) and the air conditioning capacity of the air conditioner shown in FIG. 6 (B). As the outdoor unit of the air conditioner, the configuration shown in FIGS. 7A and 7B is adopted.

In FIG. 7A, the blower 10B on the lower side is small and the blower 10A on the upper side is a standard one. Blower 10B on the lower side is propeller fan 12B
A second bell mouth 26 having a smaller diameter than that of the reference and having a shielding portion 26b is attached to the outlet 7.
Since the blower 10A on the upper side is based on the diameter of the propeller fan 12A, the first bell mouth 16 is attached to the outlet 7.

In FIG. 7B, on the contrary, the blower 10B on the upper side is small and the blower 10A on the lower side is the standard one. In the upper blower 10B, the diameter of the propeller fan 12B is smaller than the standard, so the second bell mouth 26 having the shielding portion 26b is attached to the outlet 7, and in the lower blower 10A, the diameter of the propeller fan 12A is standard. Therefore, the first bell mouth 16 is attached to the outlet 7.

8A is applied to the outdoor unit in the air conditioner having an intermediate air conditioning capacity, as in the case of FIGS. 7A and 7B. The reference blower 10A is arranged on the upper side, and the first bell mouth 1 corresponding to this propeller fan 12A is arranged.
6 is attached.

There is a small blower 10B on the lower side,
Moreover, the positions are shifted to the upper side. A second bell mouth 36 including a bell mouth portion 36a applied to the propeller fan 12B and an eccentric shield portion 36b is attached to the lower outlet 7.

FIG. 8B is similar to the case of FIG. 6B.
It is a structure that is adopted as an outdoor unit in an air conditioner that is one rank below the air conditioning capacity specification, and has a small blower 10B at the top and bottom.
Is used.

In particular, the blower 10B on the upper side is mounted with the second bell mouth 26 provided with a shield portion 26b having an annular inner and outer diameters with the mounting center position unchanged.
The blower 10B on the lower side is arranged with its position shifted to the upper side, and a second bell mouth having an eccentric shield portion 36b is attached.

In both FIGS. 8A and 8B, the second bell mouth 36 having the eccentric shield portion 36b on the lower side is attached, and it is possible to adopt an upside down combination structure. Is.

The above structure is particularly suitable for cold regions. That is, the distance between the peripheral edge of the propeller fan 12B of the lower blower 10B and the bottom plate 1f of the outdoor unit body 1 becomes larger than that described above, and the outdoor heat exchanger 8 freezes excessively or the bottom plate 1f. Even if there is snow on the 1f, the probability of occurrence of problems such as freezing of the propeller fan 12B and damage and stoppage of the propeller fan 12B becomes low.

[0066]

As described above, according to the present invention, the blowers having different fan diameters corresponding to the air conditioning capacity are used, and the bell mouth corresponding to the above fan is used to maintain the ventilation efficiency and reduce the air conditioning capacity. Even with different specifications, one type of outdoor unit main body is commonly used, and it is effective in contributing to cost reduction.

[Brief description of drawings]

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

FIG. 2 is a front view of the outdoor unit according to the same embodiment.

FIG. 3 is a front view and a vertical cross-sectional view of an outdoor unit according to still another embodiment.

FIG. 4 is a front view of an outdoor unit according to another embodiment.

FIG. 5 is a perspective view showing an outdoor unit in an exploded manner according to a different embodiment.

FIG. 6 is a partial front view of the outdoor unit according to different embodiments.

FIG. 7 is a partial front view of the outdoor unit according to different embodiments.

FIG. 8 is a partial front view of the outdoor unit according to different embodiments.

[Explanation of symbols]

1 ... Outdoor unit body, 8 ... Outdoor heat exchanger, 10, 10A, 10B ... Blower, 12, 12A, 12B ... Propeller fan, 7 ... Blowout port (opening), 6 ... Bellmouth, 16 ... the first bell mouth, 26, 36 ... the second bell mouth, 26a, 36a ... Bell mouth part, 26b, 36b ... Shielding portion.

Claims (3)

[Claims] 1. An outdoor unit main body shared by an air conditioner having a standard air conditioning capacity and an air conditioner having an air conditioning capacity of a rank lower than the standard, a heat exchanger arranged in the outdoor unit main body, and A blower having a different fan diameter depending on the air conditioning capacity, an opening provided in the wall surface portion of the outdoor unit facing the blowing direction of the blower, and a blower provided in the opening and blown from the blower. And a bell mouth that guides the wind that is blown, and the bell mouth corresponds to a standard blower adopted in the standard air conditioning capacity specifications, and the first bell mouth attached to the opening and It has a lower rank air-conditioning capacity specification and is attached to the above-mentioned opening corresponding to a fan whose fan diameter is smaller than the standard, and it is equipped with a bell mouth part, and between this bell mouth part and the opening peripheral edge. A second bell mouth provided with an annular shielding portion for covering, wherein the first bell mouth and the second bell mouth are selected and attached according to a fan diameter of the blower. An outdoor unit of an air conditioner. 2. The shielding part of the second bell mouth according to claim 1,
The outdoor unit for an air conditioner according to claim 1, wherein the inner diameter circle and the outer diameter circle are concentric with each other, or the inner diameter circle is eccentrically provided with respect to the outer diameter circle. 3. A plurality of the blowers are arranged side by side in a vertical direction, the openings are provided so as to face the respective blowers, and the second bell mouth has at least an upper blower and a lower blower. The air conditioner outdoor unit according to any one of claims 1 and 2, which is attached so as to correspond to either one of the blowers.