JP2013145094A - Outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner capable of suppressing short-circuit even in a narrow installation place, and having high maintenance performance.SOLUTION: This outdoor unit of the air conditioner includes a bottom base, an upper cover 103 disposed at an upper section in opposition to the bottom base, a front cover 104 disposed at a front side of the bottom base and the upper cover, a heat exchanger 107, and a propeller fan 112 for ventilating the heat exchanger. The heat exchanger is configured into the approximately U-shape, and disposed between the bottom base and the upper cover, and the propeller fan is mounted on the front cover and disposed in front of the approximately U-shaped heat exchanger.

Description

  The present invention relates to an outdoor unit of an air conditioner, and is particularly suitable as an outdoor unit installed in a narrow place.

  As this type of prior art, for example, there is one described in JP 2000-111102 A (Patent Document 1). The thing of this patent document 1 was arrange | positioned in the back of the substantially M-shaped heat exchanger, the propeller fan arrange | positioned ahead of this substantially M-shaped heat exchanger, and the said substantially M-shaped heat exchanger. A compressor, and the propeller fan is configured such that air passes from the compressor side to the propeller fan side with respect to the substantially M-shaped heat exchanger. By comprising in this way, it is set as the outdoor unit of the air conditioner which is small and has favorable workability | operativity.

  Another conventional technique is described in Japanese Patent Laid-Open No. 10-2581 (Patent Document 2). In this Patent Document 2, a cross-flow fan is employed as the blower fan, and the cross-sectional U is disposed around the cross-flow fan around the outer periphery of the cross-flow fan. A letter-shaped heat exchanger is provided to make it an outdoor unit for a vertical cassette casing type air conditioner having a small size and high heat exchange capability.

JP 2000-111102 A Japanese Patent Laid-Open No. 10-2581

  The outdoor unit of the air conditioner as described above is installed in various places. For example, an outdoor unit of an air conditioner is installed at the corner of the building (building) roof or in the store premises, or when it is installed on the building wall with an angle stay on the building wall. It is installed in various places for convenience.

  In recent years, especially in large urban areas, the space between buildings is narrow and the buildings are often dense. When installing an outdoor unit for an air conditioner in such a place, it may not be possible to install the outdoor unit in a place as mentioned in the above example. In such a case, the outdoor unit may be placed in a narrow space between the building and the building. Often there are machines installed. In this case, the following several problems arise.

  First of all, in the case of a side-blow outdoor unit as shown in FIG. 8, since the installation space is small, the outlet of the outdoor unit is close to the walls of adjacent buildings and the walls between buildings. It is often installed opposite. In this case, the air blown out of the outdoor unit collides with the wall and the fence immediately after exiting the outlet, so that the heat exchanged by the heat exchanger cannot be sufficiently separated from the outdoor unit, and heat exchange This causes a short circuit in which the air blown from the vessel is sucked again from the suction side of the heat exchanger, and the heat exchange capability is reduced.

  Secondly, since the installation location of the outdoor unit is narrow, there is a problem that it is difficult to perform maintenance such as component replacement when the outdoor unit fails.

  Thirdly, when two or more outdoor units are installed, they are generally installed side by side, but in that case, the problem of the short circuit and maintenance becomes large.

  Although the thing of the said patent document 1 has disclosed the outdoor unit of the air conditioner which was small and improved workability | operativity (maintenance property), in this patent document 1, the compressor is the suction of a heat exchanger. Since it is installed on the side, it is necessary to open the cover and the upper cover on the outlet side in order to maintain the blower and the electrical equipment. In addition, when replacing or maintaining the compressor, it is necessary to remove the electrical component box. That is, in the thing of this patent document 1, sufficient consideration is not given about maintainability, such as a compressor.

  In the above-mentioned Patent Document 2, a cross-flow fan is used as a small and vertically long outdoor unit. However, since a large flow rate is generally not generated with a cross-flow fan, it can be applied to a small capacity such as a room air conditioner. There is a problem that it is difficult to adopt it for a large capacity outdoor unit such as a packaged air conditioner.

  An object of the present invention is to obtain an outdoor unit of an air conditioner that can suppress a short circuit even in a narrow installation place and is excellent in maintainability.

  In order to solve the above-described problems, the present invention provides a bottom base, an upper cover that is installed above and facing the bottom base, a front cover provided on the front side of the bottom base and the upper cover, a heat exchanger, And in the outdoor unit of the air conditioner provided with a blower fan for allowing the heat exchanger to ventilate, the heat exchanger is configured in a substantially U shape and disposed between the bottom base and the upper cover, The blower fan is attached to the front cover and is disposed in front of the substantially U-shaped heat exchanger.

  According to the present invention, it is possible to obtain an outdoor unit of an air conditioner that can suppress a short circuit even in a narrow installation place and is excellent in maintainability.

The front view of the outdoor unit of the air conditioner which shows Example 1 of this invention. The side view of the outdoor unit of FIG. The top view of the outdoor unit of FIG. The A section enlarged view in FIG. The figure seen from the B direction of FIG. 4, The figure explaining the fixed relationship of an electric box clamp and an upper cover. The figure explaining the taking-out direction of an electric box. The perspective view of the electric box clamp shown in FIG. The front view of the outdoor unit of the conventional air conditioner. The side view explaining the flow of the blowing air in the outdoor unit of the air conditioner shown in FIG. The top view explaining the maintenance space in the outdoor unit of the air conditioner shown in FIG. The top view explaining the state which installed the outdoor unit of the air conditioner of Example 1 shown in FIG. 1 between the building wall and the eaves. The figure explaining the operation | movement at the time of the maintenance of the outdoor unit of the air conditioner in the state shown in FIG. The front view explaining the example at the time of installing two outdoor units of the air conditioner of Example 1 shown in FIG.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. In each figure, the part which attached | subjected the same code | symbol has shown the part which is the same or it corresponds.

  1 is a front view of an outdoor unit of an air conditioner showing Embodiment 1 of the present invention, FIG. 2 is a side view of the outdoor unit of FIG. 1, and FIG. 3 is a plan view of the outdoor unit of FIG.

  In these drawings, an outdoor unit 101 of an air conditioner includes a bottom base 102, an upper cover 103 disposed above the bottom base 102, and the front side (front side) of the bottom base 102 and the upper cover 103. A front cover 104 provided on the side, a side cover 105 provided so as to connect the bottom base 102 and the front side portion of the upper cover 103, and a rear corner side of the bottom base 102 and the upper cover 103 are connected. The stay 106 provided in this manner, the substantially U-shaped heat exchanger 107 disposed between the bottom base 102 and the upper cover 103, and the substantially U-shaped heat exchanger 107 are disposed in front of the heat exchanger 107. The compressor 108 and the propeller fan (blower fan) 112 are included.

  The propeller fan 112 is configured to allow air (outside air) to flow through the heat exchanger 107 from the outside of the substantially U-shaped heat exchanger 107 and to blow out to the front of the propeller fan 112. The propeller fan 112 is attached to the front cover 104.

  That is, a motor clamp 110 for supporting a motor 111 that drives the propeller fan 112 is attached to the front cover 104 together with a grille 113, and the propeller fan 112 is interposed via the motor clamp 110 and the motor 111. Attached to the front cover 104. The motor clamp 110 is fixed to the front cover 104 by screws or the like, and the motor 111 is also fixed to the motor clamp 110 by screws or the like. The grill 113 is for ensuring protection and safety of the propeller fan 112.

The front cover 104 is attached to the side cover 105 of the outdoor unit 101 via a hinge 201, and the front cover 104 is configured to be openable and closable with the hinge 201 as a fulcrum.
Further, in this embodiment, when the front cover 104 is the front and the rotation axis direction of the propeller fan 112 is the depth, the depth dimension D is larger than the width dimension W of the outdoor unit 101 viewed from the front. It is comprised so that it may become. The parts such as the compressor 108 and the like are arranged on the side of the front cover 104 to which the propeller fan 112 of the bottom base 102 is attached so that the parts can be easily replaced when the front cover 104 is opened. The heat exchanger 107 and the front cover 104 are arranged.

  109 is an electric box for storing electric parts, 109a is an electric box clamp arranged to be bridged to the upper part of the opposed portion of the substantially U-shaped heat exchanger 107, and the electric box 109 is It is installed on the electric box clamp 109a and fixed by means such as screwing. Then, by opening the front cover 104, it is possible to facilitate maintenance and replacement of the electrical components housed in the electrical box 109.

The compressor 108, the electric box 109, and the like are arranged so as to be surrounded by the substantially U-shaped heat exchanger 107 and the propeller fan 112 when viewed from above the outdoor unit 101.
In FIG. 1 to FIG. 3, 114 is a bell mouth installed on the outer peripheral side of the propeller fan 112, and 115 is a base (foundation) provided on the ground level 116. The machine 101 is installed through the foot 102a of the bottom base 102.

  Next, the mounting structure of the electric box 109 will be described with reference to FIGS. 4 is an enlarged view of a portion A in FIG. 2, FIG. 5 is a view as seen from the direction B in FIG. 4, and is a diagram for explaining the fixing relationship between the electric box clamp 109a and the upper cover 103, and FIG. FIG. 7 is a perspective view of the electric box clamp 109a shown in FIG.

  4 and 5, an electric box positioning stay 109b is fixed to the bottom surface of the electric box 109 by spot welding or the like, while the electric box clamp 109a has the substantially U-shaped heat exchange. It arrange | positions so that it may bridge over the upper part of the part which the container 107 opposes, and the both ends are being fixed to the said upper cover 103 with the fixing screw 103a. By fixing the positioning stay 109b to the electric box clamp 109a with a fixing screw 109c, the electric box 109 is positioned and fixed to the electric box clamp 109a.

  The electric box clamp 109a is configured as shown in FIG. 7. Screw holes 109aa for fixing the upper cover 103 with the fixing screws 103a are formed at both ends of the electric box clamp 109a. A screw hole 109ab for fixing the box 109 is formed.

  When taking out the electric box 109, the front cover 104 (see FIG. 3) is opened, and the fixing screw 109c is removed from the front. As a result, as shown in FIG. 6, the electric box 109 can be slid forward and taken out, and the electrical components housed in the electric box 109 can be easily replaced and maintained. Further, when the electric box 109 is returned to the original position and fixed, by sliding the electric box 109 in the direction opposite to the sliding direction shown in FIG. 6, the positioning stay 109b serves as a stopper, and the electric box 109 The electric box 109 is positioned by hitting the box clamp 109a. In this state, the positioning stay 109b is fixed to the electric box clamp 109a by the fixing screw 109c.

  Here, a laterally blown outdoor unit as an outdoor unit of a conventional air conditioner will be described with reference to FIGS. The configuration of the conventional outdoor unit 121 of the air conditioner is the same as the configuration of the outdoor unit 101 of the air conditioner of Example 1 of the present invention described above and the basic configuration as the outdoor unit of the air conditioner are the same. Parts or corresponding parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference between the conventional outdoor unit 121 and the outdoor unit 101 of this embodiment will be described. First, in the case of the conventional outdoor unit 121, when the width dimension W and the depth dimension D (both refer to FIG. 10) are compared, the width dimension W is larger than the depth dimension D. Further, the machine room 122 and the blower room 123 are divided by the partition plate 127, and the machine room front cover 124 and the blower room front cover 125 are divided correspondingly. Further, an electric box 109 is disposed in the machine room 122.

The problem of such a conventional outdoor unit 121 will be described.
The flow of the blown air in the outdoor unit 121 of the air conditioner shown in FIG. 8 will be described with reference to FIG. As shown in FIG. 9, the conventional air conditioner 121 is, for example, a narrow place between the building wall 301 and the wall 302, particularly the width dimension W of the outdoor unit than the distance L between the building wall 301 and the wall 302. Is large, the outdoor unit 121 is installed with its outlet 126 facing the bowl 302.

  In this case, the flow of the blown air 303 exiting from the blowout port 126 of the outdoor unit is a portion (hereinafter referred to as a collision unit) 304 facing the blowout port 126 of the basket 302 immediately after coming out of the blowout port 126. And the flow is disturbed there, and a part of the blown air is sucked from the suction side of the heat exchanger 107 in the outdoor unit 121. This is a phenomenon called a short circuit. When such a short circuit occurs, the heat exchanged blown air 303 is immediately sucked into the heat exchanger, so that the heat exchange capability is lowered.

  Further, when the flow is disturbed between the outlet 126 of the outdoor unit 121 and the collision part 304 of the basket 302, the flow winds up surrounding dust, and this dust is sucked into the heat exchanger 107, As a result, there arises a problem that the gaps between the fins constituting the heat exchanger 107 are clogged and the surroundings are contaminated.

  Further, the conventional outdoor unit 121 of the air conditioner has a problem that the service space is narrow. That is, when maintenance (including parts replacement) of the outdoor unit 121 installed in the state shown in FIG. 9 is performed, an operator enters the service space 401 as shown in FIG. Do work.

When only the propeller fan 112 is to be replaced, the grill 113 is removed from the fan chamber front cover 125 and the operation is performed.
When the motor 111 is replaced, since the wiring of the motor 111 is connected to the electric box 109, at least after the grill 113 and the propeller fan 112 are removed, the machine room front cover 124 is removed, and the electric box 109 is removed. After removing the motor wiring inside the motor, the motor will be replaced. The amount of work varies depending on how the wiring of the motor 111 is connected to the electrical box 109, and depending on the configuration, it may be necessary to remove the front fan cover 125 and the upper cover 103 as well.

  On the other hand, when the compressor 108 or the like is replaced, the machine room front cover 124 is removed. However, if there is a basket 302 or the like in the take-out direction of the compressor 108, the service space 401 becomes narrow and the work becomes difficult. Or difficult to do safely.

Thus, the conventional outdoor unit 121 described above has various problems. On the other hand, according to the outdoor unit 101 of the present embodiment, it is possible to solve the above-described problems of the conventional outdoor unit as described below with reference to FIGS.
11 is a plan view for explaining a state in which the outdoor unit 101 of the air conditioner of the present embodiment shown in FIG. 1 is installed between the building wall 301 and the wall 302, and FIG. 12 is an air conditioner in the state shown in FIG. It is a figure explaining the operation | movement at the time of the maintenance of the outdoor unit of a machine.

  As shown in FIG. 11, when the outdoor unit 101 of the air conditioner according to the present embodiment is installed in a narrow place between the building wall 301 and the wall 302, the distance (passage width) L between the building wall 301 and the wall 302. Since the width dimension W of the outdoor unit 101 can be made smaller than that (the depth dimension D may be larger than the distance L), the outdoor unit 101 has the direction of the depth dimension D and the building wall 301 or It can be installed so that the direction of the surface of the collar 302 is substantially parallel.

  By installing in this way, it is possible to prevent the blown air 303 blown from the front of the outdoor unit 101 from hitting the basket 302. As a result, a short circuit in which the flow of the blown air 303 is sucked from the suction side of the heat exchanger 107 is less likely to occur. In addition, since it is possible to prevent the flow from being disturbed between the outlet 126 of the outdoor unit 101 and the eaves 302, it is possible to prevent the blown air 303 from winding up surrounding dust and being sucked into the heat exchanger 107. . Therefore, it is possible to prevent the gaps between the fins constituting the heat exchanger 107 from being clogged and the surroundings from becoming dirty. Note that reference numeral 305 denotes intake air.

  Furthermore, in the outdoor unit 101 of the air conditioner of the present embodiment, there is an effect that the service space 401 can be widened. That is, as shown in FIG. 12, when the outdoor unit 101 of the air conditioner of this embodiment is maintained (including parts replacement), it can be performed as follows.

  In this embodiment, since there is no obstacle in front of the outdoor unit 101, a wide service space 401 can be easily secured. For example, when replacing or maintaining the propeller fan 112, the front cover 104 is opened as shown by the arrow 203, and the propeller fan 112 is installed on the back side of the front cover 104. The fan 112 can be removed. Therefore, the replacement and maintenance can be easily performed.

  When replacing the motor 111, the front cover 104 is opened as indicated by the arrow 203 and the propeller fan 112 is removed, and then the motor 111 is detached from the motor clamp 110 and replaced. At this time, the motor wiring is connected to the electric box 109. However, when the front cover 104 is opened, the electric box 109 is installed above the heat exchanger 107. As indicated by ', the motor 111 can be easily replaced by sliding it out in the direction of the arrow 204 (forward) and removing the motor wiring in the electric box 109. Therefore, in this embodiment, it is not necessary to open other than the front cover 104, and motor replacement and maintenance can be easily performed.

  In the case shown in FIG. 12, as described with reference to FIG. 6, the electric box 109 can be slid forward and taken out, but the board on which the electric components in the electric box 109 are mounted. Etc. may be made slidable and taken out forward, and in this way, the operation can be further simplified.

  On the other hand, when replacing the compressor 108 etc. installed on the bottom base 102 (see FIG. 1) of the outdoor unit 101, the front cover 104 is opened in the direction of the arrow 203, and the compressor 108 etc. can be taken out. It ’s fine. In the case of the outdoor unit 101 of the present embodiment, the direction in which the compressor 108 and the like are taken out is the direction of the depth dimension D of the outdoor unit 101, and there are no obstacles such as the hook 302 in that direction. A large space 401 can be taken. For this reason, according to the present embodiment, it is possible to easily and safely take out the compressor and the like.

  Furthermore, since the outdoor unit 101 of the present embodiment employs a propeller fan as the blower fan, a large air volume can be obtained and an outdoor unit having a large air conditioning capability can be obtained. In general, the larger the air conditioning capacity of the outdoor unit, the more the air volume is required. However, as shown in Patent Document 2, it is generally difficult to obtain a large air volume when a cross-flow fan is used. It is difficult to obtain an outdoor unit with a large air conditioning capacity.

  FIG. 13 is a front view for explaining an example in which two outdoor units 101 of the air conditioner of the first embodiment shown in FIG. 1 are installed. As shown in FIG. 13, when two outdoor units 101 according to the present embodiment are installed in a small installation place, two units can be installed side by side in the height direction. By installing in this way, it can suppress that problems, such as a short circuit mentioned above, generate | occur | produce. Also, with respect to maintainability, a sufficiently wide service space 401 can be secured as in the case of installing one outdoor unit 101 described with reference to FIG. It is also possible to avoid difficulty in securing.

  Note that the installation example of the outdoor unit 101 shown in FIG. 13 is an installation example where the installation location is narrow. When a sufficiently large installation location can be secured, it is not necessary to install two units side by side in the height direction. Needless to say, the degree of freedom of installation increases. Further, the substantially U-shaped heat exchanger includes a U-shaped heat exchanger in addition to the U-shaped heat exchanger.

  As described above, according to the outdoor unit of the air conditioner of the present embodiment, even when the outdoor unit is installed in a narrow place between a building and a building (or a fence), it is possible to suppress a short circuit. In addition, the maintainability of the outdoor unit can be improved. In addition, even when two or more outdoor units are installed, they can be installed in a narrow installation place, and the same effects as in the case of installing one outdoor unit can be obtained with respect to the suppression of short circuits and maintainability. Furthermore, since the thing of a present Example employ | adopts the propeller fan, large air volume is obtained and, as a result, the outdoor unit with a large air-conditioning capability can also be obtained.

101, 121: outdoor unit,
102: bottom base, 102a: foot,
103: Upper cover, 103a: Fixing screw,
104: Front hippo, 105: Side hippo, 106: Stay,
107: heat exchanger,
108: Compressor,
109: Electric box,
109a: electric box clamp, 109aa, 109ab: screw hole,
109b: positioning stay, 109c: fixing screw, 109d: screw hole,
110: Motor clamp, 111: Motor,
112: Propeller fan (fan) 113: Grill
114: Bellmouth,
115: Base, 116: Ground level,
122: Machine room, 133: Blower room,
124: Cover in front of the machine room, 125: Cover in front of the fan room,
126: outlet, 127: partition plate,
201: hinge,
301: building wall, 302: wall
303: blowing air,
304: collision part,
305: Suction air,
401: Service space.

Claims (10)

A bottom base, an upper cover installed above and facing the bottom base, a front cover provided on the front side of the bottom base and the upper cover, a heat exchanger, and a blower fan for ventilating the heat exchanger In an outdoor unit of an air conditioner comprising:
The heat exchanger is configured in a substantially U shape and is disposed between the bottom base and the upper cover,
The blower fan is attached to the front cover and is disposed in front of the substantially U-shaped heat exchanger.   2. The outdoor unit for an air conditioner according to claim 1, wherein the blower fan is a propeller fan, and an air outlet is formed in the front cover, and the propeller fan is arranged at the position of the air outlet. The outdoor unit of the air conditioner is characterized in that a motor of the propeller fan is attached to the front cover via a motor clamp.   The outdoor unit for an air conditioner according to claim 1 or 2, further comprising a side cover provided so as to connect the bottom base and a front side portion of the upper cover, wherein the front cover is hinged to the side cover. An outdoor unit for an air conditioner, which is attached via a hinge and configured to be opened and closed with the hinge as a fulcrum.   In the outdoor unit of the air conditioner in any one of Claims 1-3, a compressor is arrange | positioned between the said substantially U-shaped heat exchanger and the said front cover which has attached the said ventilation fan. An air conditioner outdoor unit characterized by   The outdoor unit of the air conditioner according to any one of claims 1 to 4, wherein an electric box clamp is bridged to attach an electric box to an upper part of the opposed portion of the substantially U-shaped heat exchanger. The electric box containing the electrical parts is arranged on the electric box clamp so that the electric box is installed on the upper cover, and is stored in the electric box by opening the front cover. An outdoor unit of an air conditioner characterized in that it is configured to allow maintenance and replacement of electrical parts.   6. The outdoor unit for an air conditioner according to claim 5, wherein an electrical box positioning stay is attached to a bottom surface of the electrical box, the positioning stay is positioned and fixed to the electrical box clamp with a fixing screw, and the fixing screw is removed. And the outdoor unit of the air conditioner characterized by the said electric box being comprised so that a slide to the said front cover side is possible.   The outdoor unit for an air conditioner according to claim 5 or 6, wherein the electric box is mounted with the substantially U-shaped heat exchanger and the blower fan as viewed from above the outdoor unit. An outdoor unit for an air conditioner, characterized in that the outdoor unit is arranged in a range surrounded by a hippo.   In the outdoor unit of the air conditioner according to any one of claims 2 to 7, when the front cover is the front and the rotation axis direction of the propeller fan is the depth, the width of the outdoor unit viewed from the front, An outdoor unit of an air conditioner characterized in that the depth dimension is larger.   9. The outdoor unit for an air conditioner according to claim 8, wherein the outdoor unit is installed such that a direction of a depth dimension thereof is substantially parallel to a direction of a building wall or a wall surface. Air conditioner outdoor unit.   The outdoor unit for an air conditioner according to claim 2, wherein the motor clamp is screwed to the front cover together with a grill for protecting the propeller fan and ensuring safety. Air conditioner outdoor unit.

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