WO2019151313A1

WO2019151313A1 - Outdoor unit for air conditioner

Info

Publication number: WO2019151313A1
Application number: PCT/JP2019/003138
Authority: WO
Inventors: 大樹平和; 史朗小池; 祐輔田中; 誉士辻内; 成毅神谷; 堀田　卓也
Original assignee: ダイキン工業株式会社
Priority date: 2018-01-31
Filing date: 2019-01-30
Publication date: 2019-08-08
Also published as: JP2019132548A; JP6673377B2

Abstract

Provided is an outdoor unit in which components (3, 4, 5, 10) of a refrigerant circuit are arranged in a casing (2), the outdoor unit including a lower casing (20), an upper casing (30), and a coupling portion (50). The coupling portion (50) has a configuration in which a protruding portion (51) protruding downward from a lower surface of the upper casing (30) is attached to a supporting column of the lower casing (20). The upper casing (30) is placed on and fixed to the lower casing (20).

Description

Air conditioner outdoor unit

This disclosure relates to an outdoor unit of an air conditioner.

Some outdoor units of an air conditioner have an outdoor heat exchanger disposed at the lower part of the casing and a fan disposed at the upper part of the casing (see, for example, Patent Document 1). Patent Document 1 describes an example in which a plurality of outdoor units are installed side by side.

Japanese Unexamined Patent Publication No. 2016-180544

After installing the outdoor unit on site, a malfunction occurred in the outdoor heat exchanger, and the outdoor heat exchanger was sometimes replaced. When exchanging an outdoor heat exchanger, the operation | work which removes the components arrange | positioned on an outdoor heat exchanger and the support | pillar of a casing one by one is required, and the operation | work was very difficult.

The purpose of the present disclosure is to facilitate maintenance work of the outdoor heat exchanger.

The first aspect of the present disclosure is premised on an outdoor unit of an air conditioner in which components (3, 4, 5, 10) of a refrigerant circuit are arranged in a casing (2).

And the outdoor unit of this air conditioner is
The casing (2)
A lower part having a plurality of lower pillars (23) extending in the vertical direction and in which a heat exchanger (10) and a compressor (3) are arranged in a lower space (S1) surrounded by the lower pillars (23) A casing (20);
An upper casing (30) provided with a plurality of upper struts (33) extending vertically and having a fan (7) disposed in an upper space (S2) surrounded by the upper struts (33);
A connecting portion (50) provided on the lower support column (23) and the upper support column (33) so as to connect the lower casing (20) and the upper casing (30);
The connecting portion (50) includes a protrusion (51) included in any one of the upper strut (33) and the lower strut (23), and the protrusion (51) as the upper strut (33) and the lower strut. And a joining portion (55) for joining to the other end of the support (23).

In the first aspect, the upper strut (33) and the lower strut (23) are joined by the protrusion (51) and the joint (55), and the lower casing (20) and the upper casing (30) are assembled. The lower casing (20) and the upper casing (30) can be easily separated by removing the protrusion (51) and the joint (55).

According to a second aspect of the present disclosure, in the first aspect,
The protruding portion (51) is configured by a portion in which the upper support column (33) protrudes downward from the lower surface of the upper casing (30), and the joining portion (55) is an upper end portion of the lower support column (23). It is characterized by comprising.

In the second mode, the protrusion (51) of the upper column (33) of the upper casing (30) is coupled to the lower column (23) of the lower casing (20) by the coupling unit (50). In the second aspect, the upper casing (30) having the protruding portion (51) protruding downward is placed on the lower casing (20), and the upper casing (30) is easily connected to the lower casing (20). Conversely, the upper casing (30) can be easily removed from the lower casing (20).

According to a third aspect of the present disclosure, in the second aspect,
The lower support column (23) has a mounting surface (57) on which the upper casing (30) is mounted at its upper end.

In the third aspect, the upper casing (30) is fixed to the lower casing (20) in a state where the upper casing (30) is placed on the placement surface (57) at the upper end of the lower support column (23). Therefore, the placement surface (57) described above supports the load of the upper casing (30).

According to a fourth aspect of the present disclosure, in the third aspect,
The upper casing (30) has a side panel (36), and the lower end surface of the side panel (36) is mounted on the mounting surface (57) of the lower support (23).

In the fourth aspect, the upper casing (30) is placed on the lower casing (20) in a state where the side panel (36) of the upper casing (30) is placed on the mounting surface (57) at the upper end of the lower column (23). The mounting surface (57) described above is fixed and supports the load via the side panel (36).

According to a fifth aspect of the present disclosure, in the third or fourth aspect,
The side panel (36) of the upper casing (30) includes a rectangular side plate (36a) that covers the side surface of the upper casing (30), and a lower edge (36c) that is connected to the side plate (36a) at its lower side. It is characterized by having.

In the fifth aspect, the lower casing (20) is mounted on the lower casing (20) with the lower edge (36c) of the side panel (36) of the upper casing (30) placed on the mounting surface (57) at the upper end of the lower support column (23). The mounting surface (57) described above is fixed and supports the load via the lower edge (36c) of the side panel (36).

According to a sixth aspect of the present disclosure, in any one of the first to fifth aspects,
The casing (2) has a front plate (41 to 44) mounted across the upper casing (30) and the lower casing (20).

In the sixth aspect, the upper casing (30) is attached to the lower casing (20) to form one casing (2), and then the front panel is attached to close the opening of the casing (2). When this front panel is removed, a wide opening from the lower casing (20) to the upper casing (30) appears and can be used for maintenance and the like.

FIG. 1 is a perspective view of an outdoor unit according to an embodiment as viewed from the front side. FIG. 2 is a perspective view of the outdoor unit according to the embodiment as viewed from the back side. FIG. 3 is a perspective view showing a schematic structure of the interior of the outdoor unit with the outdoor heat exchanger omitted. 4 is a schematic sectional view taken along line IV-IV in FIG. FIG. 5 is a perspective view of the lower casing as viewed from the front side, showing an outdoor heat exchanger, and omitting the compressor and other internal structural components. FIG. 6 is a partially enlarged perspective view of the lower casing. FIG. 7 is a perspective view of the upper casing as viewed from the front side. FIG. 8 is a perspective view of the side panel of the upper casing viewed from the outside. FIG. 9 is a perspective view of a side panel of the upper casing as viewed from the inside. FIG. 10 is a central sectional view of the upper casing as viewed from the front. FIG. 11 is a cross-sectional view of the main part when the upper casing is viewed from the side surface direction. FIG. 12 is an exploded perspective view showing how the casing is assembled. FIG. 13 is a partial perspective view showing the positions and schematic structures of the connecting portions provided at the four corners of the attachment portion of the upper casing and the lower casing. FIG. 14 is a partially enlarged perspective view showing the shape of the upper end portion of the lower column in the lower casing. FIG. 15 is a partially enlarged perspective view showing the shape of the lower end portion of the upper column and the shape of the side panel in the upper casing. 16 is a cross-sectional view taken along line XVI-XVI in FIG. FIG. 17 is a front view of an essential part of the connecting portion of FIG. FIG. 18 is a side view of a main part of the connecting portion of FIG. FIG. 19 is a state diagram illustrating a state in which the connecting portion is operated with a tool during maintenance.

Embodiment will be described.

This embodiment relates to an outdoor unit (1) of an air conditioner. This air conditioner is, for example, a multi-type air conditioner configured by connecting a plurality of indoor units (not shown) to a single outdoor unit (1) through a communication pipe. For example, a plurality of outdoor units (1) of the air conditioner are installed side by side outdoors, and a plurality of indoor units are connected to each.

The air conditioner provided with the outdoor unit (1) of this embodiment performs cooling and heating of an indoor space such as an office. The target space where the air conditioner performs air conditioning is not limited to the indoor space such as an office or a house, but is a space in a warehouse for storing articles, a working space for handling articles (for example, a clean room), and the like. May be.

<Overall unit structure>
FIG. 1 is a perspective view of the outdoor unit (1) of this embodiment as viewed from the front side, and FIG. 2 is a perspective view of the outdoor unit (1) as viewed from the back side. The outdoor unit (1) includes a first unit (1A) located on the right side as viewed from the front side and a second unit (1B) located on the left side. The first unit (1A) and the second unit (1B) ) Are integrally formed.

The outdoor unit (1) of this air conditioner includes a vertical rectangular parallelepiped casing (2), and the components of the refrigerant circuit are accommodated in the casing (2). The casing (2) includes a lower casing (20), an upper casing (30), and a front panel (40), which are combined. The upper casing (30) is fixed on the lower casing (20). The front panel (40) is composed of four vertically long plate members (front plates) that cover almost the entire area from the upper end of the upper casing (30) to the lower end of the lower casing (20). The front panel (40) is mounted across the upper casing (30) and the lower casing (20).

The casing (2) includes a connecting portion (50) for connecting the lower casing (20) and the upper casing (30), as will be described in detail later.

The outdoor unit (1) includes a compressor circuit (3), an outdoor heat exchanger (10), an outdoor expansion valve (not shown), an accumulator (4), an oil separator (5), and other components of the refrigerant circuit. Components such as a control device (electric component box (6)) in which electronic components for controlling the refrigerant circuit are accommodated are provided. The indoor unit is provided with devices such as an indoor expansion valve and an indoor heat exchanger.

The outdoor heat exchanger (10) is provided in the lower casing (20). FIG. 3 is a perspective view showing a schematic structure of the interior of the outdoor unit (1) with the outdoor heat exchanger (10) omitted, and FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. 2 and 4, the outdoor heat exchanger (10) includes a first outdoor heat exchanger (10a) provided in the first unit (1A) and a second provided in the second unit (1B). And an outdoor heat exchanger (10b). Each outdoor heat exchanger (10) has a plate-shaped three-surface heat exchange part (11) and a bent part (12) between the heat exchange parts (11), and the U-shape in plan view. Is formed.

Each of the outdoor heat exchangers (10) includes one surface (a right side surface of a first outdoor heat exchanger (10a) described later and a second outdoor heat exchanger ( The left side surface of 10b): see FIG. 4) is installed close to the right side surface and the left side surface of the lower casing (20) described later. The surface where each of the outdoor heat exchangers (10) is installed close to the right side surface and the left side surface of the lower casing (20) is viewed from directly behind the lower column (23) on the rear side of the casing. As shown in FIG. 4, it overlaps with a lower column (23), which will be described later, located on the back side of the lower casing (20). That is, when the outdoor heat exchanger (10) is slid from the back side of the lower casing (20) and removed from the casing, it is necessary to remove the lower column (23) located on the back side of the lower casing (20). It will be.

The outdoor heat exchanger (10) is a heat exchanger in which the ends of a plurality of flat tubes arranged parallel to each other and extending in the horizontal direction are connected to the header collecting tube (13), although details are omitted. A large number of fins are attached to the flat tube at a small pitch. Each outdoor heat exchanger (10) is a multi-row heat exchanger in which flat tubes are arranged in two rows. Each outdoor heat exchanger (10) is attached to the casing (2) so that the header collecting pipe (13) is oriented along the vertical direction (see FIG. 5).

In the outdoor unit (1), the first compressor (3a) and the second compressor (3b) (each compressor (3) is covered with a cover as the compressor (3) in FIG. 3). (Not shown) are provided and are respectively fixed to the lower casing (20). Parts such as an accumulator (4), an oil separator (5), and an electrical component box (6) are also mounted on the lower casing (20).

The upper casing (30) accommodates a fan (7) whose central axis of rotation extends in the vertical direction so as to blow out air upward. Although not shown, a fan motor is provided below the fan (7). When the fan (7) is rotated, air is sucked into the lower casing (20) from the outside of the casing (2) through the outdoor heat exchanger (10), and the sucked air is moved upward by the fan (7). Blowing upward from the casing (30).

<Lower casing>
FIG. 5 is a perspective view of the lower casing (20) viewed from the front side. Although the outdoor heat exchanger (10) is shown in FIG. 5, the compressor (3) and other parts are omitted. The lower casing (20) has a rectangular base member (22) and four lower support columns (23) that stand at the four corners and extend in the vertical direction. In the lower space (S1) (first lower space (S1a) and second lower space (S1b)) surrounded by the base member (22) and each lower column (23), the outdoor heat exchanger (10) and Parts such as the compressor (3) are arranged.

The base member (22) includes a bottom plate (22a) with unevenness in the left-right direction of the outdoor unit (1), and a long base leg (22b) fixed to the front and rear edges of the bottom plate (22a). ) And side stays (22c) fixed to the left and right side edges of the bottom plate (22a). The lower support (23) is fixed to the base leg (22b) and the side stay (22c) with a plurality of screws (26) as shown in FIG. 6 which is a partially enlarged view of the lower casing (20). .

The lower casing (20) is provided with a front side support plate (24) and a back side support plate (25) at the center of the front edge portion and the rear edge portion of the base member (22), respectively. . Moreover, the outer edge part of the 1st outdoor heat exchanger (10a) and the 2nd outdoor heat exchanger (10b) is being fixed to the said lower support | pillar (23) via the heat exchanger connection member (14). .

As described above, in the present embodiment, the lower casing (20) is configured as a unit (a lower unit (2A) described later) having a configuration in which the above-described components are integrally assembled.

<Upper casing>
7 is a perspective view of the upper casing 30 viewed from the front side, FIG. 8 is a perspective view of the side panel of the upper casing viewed from the outside, and FIG. 9 is a perspective view of the side panel of the upper casing viewed from the inside. FIG. FIG. 10 is a central cross-sectional view of the upper casing as viewed from the front direction, and FIG. 11 is a main-portion cross-sectional view of the upper casing as viewed from the side.

The upper casing (30) has two fan motor support bases (31) provided at the lower end in the upper casing (30) on both sides of the first unit (1A) and the second unit (1B). The motor (8) is fixed, and the fan (7) is mounted on the output shaft of each fan motor (8). Around the fan (7), there is provided a bell mouth (9) through which air flows from the bottom to the inside.

The upper casing (30) has a top plate (32) composed of a frame member (32a) and a blowout grill (32b), and four upper struts (33) extending downward from the four corners. . In the upper space (S2) (first upper space (S2a) and second upper space (S2b)) surrounded by the top plate (32) and the upper column (33), the fan (7), fan motor, etc. Parts are placed.

On the front side and the back side of the upper casing (30), stays (34), which are horizontally long reinforcing members that connect the lower ends of the left and right upper columns (33), are provided (rear side stays ( 34) is omitted. At the center of the upper casing (30) in the left-right direction, there is a space between the front part of the frame member (32a) and the stay (34) below it, and the rear part of the frame member (32a) and the stay below it ( 34) is connected to the central column (35).

The front side stay (34) and the back side stay (34) are members each having a C-shaped cross section (so-called channel member). The front-side stay (34) and the rear-side stay (34) are each divided into two in the longitudinal direction (the width direction of the outdoor unit (1)). 34) is connected at the center of the outdoor unit (1). The stay (34) on the front side and the stay (34) on the back side are connected to each other by a stay connecting member (34a) for reinforcement as shown in FIGS. 7 and 10 at the center of the outdoor unit (1). .

As shown in FIG. 11, the fan motor support base (31) is fixed on the inner surface of the lower part of each stay (34) with respect to the vertical surfaces of the front stay (34) and the rear stay (34). Has been. The bell mouth (9) is fastened to the upper surface of each stay (34) that has a channel shape. Therefore, the fan (7), fan motor (8), bell mouth (9), and fan motor support base (31) have a top plate (32) (blowing grille (32b)), each upper support (33), each stay. (34), stay connecting material (34a), and central members (35) and other members that form a frame are integrated with the casing (30).

The upper casing (30) has a side panel (36) mounted on the left and right side surfaces, and two back panels (37) mounted on the back, and the side panel (36) is also configured integrally with the casing. Has been. As described above, the front surface of the upper casing (30) is closed by the front panel (front plate) (40) mounted across the upper casing (30) and the lower casing (20).

As shown in FIGS. 8 and 9, the side panel (36) of the upper casing (30) has a rectangular side plate (36a) covering the side surface of the upper casing (30), and the side plate (36a) at its upper side. An upper edge portion (36b) that is connected, a lower edge portion (36c) that is connected to the side plate (36a) at its lower side, a front edge portion (36d) that is connected to the side plate (36a) at its front side, A shallow tray-like member having a rear edge (36e) connected to the side plate (36a) at the rear side. The side panel (36) has a bolt insertion hole (36f) formed in the lower part of the front and rear ends of the side plate (36a), and the periphery of the bolt insertion hole (36f) is the head of the mounting bolt (38). It is a recessed part (36g) which has the bottom face formed so that a part may not protrude from a side plate (36a). The bottom surface of each recess (36g) extends to the front edge (36d) and the rear edge (36e), and both the front edge (36d) and the rear edge (36e) ) Is formed corresponding to the depth of. In FIGS. 8 and 9, the boundary between the flat surface portion and the curved surface portion is represented by a straight line for convenience of drawing.

As described above, in the present embodiment, the upper casing (30) is configured as a unit (upper unit (2B) described later) in which the above-described components are integrally assembled.

<Front panel>
The front panel (40) includes a first front plate (41), a second front plate (42), a third front plate (43), and a fourth front plate (from the right side to the left side in FIG. 44). The front panel (40) is provided with an opening for piping through which communication piping is passed, an opening for inspection, a cover plate, and the like.

As described above, the first front plate (41), the second front plate (42), the third front plate (43), and the fourth front plate (44) of the front panel (40) are each a lower casing ( 20) A vertically long plate that covers from the lower end of 20) to the upper end of the upper casing (30). By removing one of these vertically long plates, you can access necessary equipment such as the compressor (3) and parts such as the electrical component box (6) in the lower space (S1), and the fan (7) and You can also access the fan motor.

<Assembly structure of casing>
The lower casing (20) contains refrigerant circuit components such as an outdoor heat exchanger (10) and a compressor (3) and an electrical component box (6). The lower casing (20) and various parts The lower unit (2A) is configured. On the other hand, in the upper casing (30), machine parts such as a fan motor and a fan (7) are accommodated, and an upper unit (2B) is constituted by the upper casing (30) and various parts.

In the present embodiment, as shown in FIG. 13, the connecting portion (50) is provided to connect the lower casing (20) and the upper casing (30) (the figure shows the back side of the casing (2)). (Showing connecting part (50)). The connecting portions (50) are provided with the same structure at the four corners of the lower casing (20) and the upper casing (30), respectively.

As the connecting portion (50), protrusions (51) described later are provided at the four corners of the lower end of the upper casing (30). In order to attach the upper casing (30) to the lower casing (20) using the protrusion (51), the upper casing (30) is attached to the lower casing (20) using, for example, an overhead crane.

<Structure of connecting part (50)>
Specifically, the connecting portion (50) is configured to connect the lower end portion of the upper column (33) to the upper end portion of the lower column (23). First, a projecting portion (51) projecting downward from the lower surface of the upper casing (30) is formed at the lower end of the upper support column (33). The upper end portion of the lower column (23) is provided on substantially the same plane as the upper surface of the lower casing (20) or slightly below it, and is positioned at the upper end portion of the lower casing (20). The upper end portion of the lower support column (23) is a joint portion (55) (see FIG. 14) in which the protruding portion (51) of the upper support column (33) is joined by the fastening bolt (59). And the said connection part (50) is the said protrusion (51) which an upper support | pillar (33) has, and the said junction part (55) for joining this protrusion (51) to a lower support | pillar (23) It is configured.

As shown in FIG. 16, the lower column (23) includes a lower first plane (56a), a lower second plane (56b), a lower first bonding surface (56c), a lower second bonding surface (56d), and a lower portion. The lower slope (56e) is connected between the lower first plane (56a) and the lower second plane (56b), and has the lower first plane (56a) and the lower second plane (56b). On the other hand, the lower first joint surface (56c) and the lower second joint surface (56d) are each an integral member provided at a position recessed toward the back side of the casing (2).

The mounting surface (57) on which the upper casing (30) is mounted is provided at the upper end surface of the joint (55) of the lower support column (23). The mounting surface (57) is formed by bending the lower first plane (56a), the lower second plane (56b), and the upper end of the lower slope (56e) to the inside of the casing (2). As shown in FIG. 15, the lower edge portion (36c), which is the lower end surface of the side panel (36), is placed on the placement surface (57) formed on the lower column (23). .

The protrusion (51) includes an upper first plane (52a) parallel to the lower second plane (56b) inside the casing (2) with respect to the lower second plane (56b), and a lower first plane ( 56a) is connected to the upper second plane (52b) inside the casing (2) and parallel to the lower first plane (56a), and to the upper first plane (52a) and to the lower first joint surface (56c). The upper first joint surface (52c) joined to the upper second flat surface (52b) and the upper second joint surface (52d) joined to the lower second joint surface (56d) are integrally formed. It is a formed member. The upper first flat surface (52a), the upper second flat surface (52b), the upper first joint surface (52c), and the upper second joint surface (52d) are portions that are bent at substantially right angles to each other. When the upper casing (30) suspended by an overhead crane or the like is attached to the lower casing (20), the lower end of the protrusion (51) is the same as the lower strut (23). In order to facilitate the insertion into the joint portion (55), a tapered portion (53) is provided.

The protrusion (51) of the upper support (33) and the joint (55) of the lower support (23) are shown in FIG. 14, FIG. 17 which is a front view of the main part, and FIG. 18 which is a side view of the main part. Are fixed by fastening bolts (59). In order to pass this fastening bolt (59), a bolt mounting hole (59a) is formed in the joint (55) of the protrusion (51) of the upper support (33) and the lower support (23). The upper casing (30) is fixed to the lower casing (20) by the fastening bolt (59). Conversely, if the fastening bolt (59) is removed, the upper casing (30) can be separated from the lower casing (20).

14 to 16, the inclined surface protruding upward from the upper end of the lower support column (23) is formed as an attachment stabilizing portion that guides insertion into the upper support column (33) into the lower support column (23). ing.

Further, except for the fastening bolt (59), the bolt for attaching the upper casing (30) to the lower casing (20) is basically provided on the front surface or the back surface of the casing (2).

-Assembling and maintenance work for casing (2)-
In this embodiment, the lower unit (2A) and the upper unit (2B) are assembled separately, and then the lower unit (2A) and the upper unit (2B) are integrated, and then the front panel (40) is mounted. Assemble the outdoor unit (1).

First, in the lower unit (2A), refrigerant circuit components such as an outdoor heat exchanger (10) and a compressor (3) are accommodated in the lower casing (20), and the lower unit is configured by the lower casing (20) and various parts. Perform assembly work (2A). On the other hand, in the upper unit (2B), mechanical parts such as a fan motor and a fan (7) are accommodated in the upper casing (30), and the upper unit (2B) is assembled using the upper casing (30) and various parts. .

In FIG. 12, the upper casing (30) is arranged above the lower casing (20) in a state of being suspended by an overhead crane or the like, and is gradually lowered so that the lower end of the upper column (33) is moved to the lower column (23). ) To assemble as one casing (2). At this time, the projecting portion (51) projecting downward from the lower surface of the upper casing (30) is operated while aligning with the joining portion (55) which is the upper end portion of the lower support post (23), and then the lower support post The joint part (55) of (23) and the protrusion part (51) of the upper support column (33) are fastened with fastening bolts (59) (see FIGS. 14 and 15).

In FIG. 12, the electrical component box (6) and the front panel (40) are attached to the integrated lower casing (20) and upper casing (30). A rear panel (37) is also attached to the upper casing (30). If possible, the rear panel (37) may be attached to the upper casing (30) when the upper unit (2B) is assembled as a single unit.

When performing maintenance of the outdoor heat exchanger (10), which is the purpose of this disclosure, the following work is performed. First, the front panel (40) is removed from the casing (2). Next, the side panel (36) and the back panel (37) of the upper casing (30) are removed. When removing the side panel (36), the side panel (36) is provided with a recess (36g), and the front or rear edge of the recess (36g) is opened to the front or back side of the casing (2). Therefore, for example, even when a plurality of outdoor units (1) are installed side by side with a narrow clearance, as shown in FIG. 19, the mounting bolt (38) of the recessed portion (36g) is attached to the front surface of the casing (2). It can be accessed with a tool (58) such as a wrench from the side or rear side, and the mounting bolt (38) can be easily loosened.

When the front mounting bolt (38) and the rear mounting bolt (38) are removed from the casing (2), the side panel (36) of the upper casing (30) can be removed from the casing (2). When the side panel (36) is removed, the fastening bolt (59) on the side of the connecting portion (50) can be accessed from above, so that the fastening bolt (59) can also be removed easily.

After removing the fastening bolt (59), the upper casing (30) is separated from the lower casing (20) by lifting it with a crane or the like. In this embodiment, the fan (7) and the fan that are disposed above the outdoor heat exchanger (10) are simply removed by removing the eight bolts (59) that fasten the lower column (23) and the upper column (33). The upper casing (30) including the parts around the motor (8) can be easily removed from the lower casing (20).

When the upper casing (30) is removed from the lower casing (20), the upper part of the lower casing (20) is released, so that the outdoor heat exchanger (10) disconnected from the refrigerant pipe can be lifted to The heat exchanger (10) can be removed by pulling upward from the casing (2).

Also, by removing the upper casing (30), the load applied to the lower strut (23) of the lower casing (20) is eliminated, so a plurality of bolts fastened to the base leg (22b) and the side stay (22c) By removing the screw (26), the lower column (23) can be easily removed from the lower casing (20). In particular, by removing the lower column (23) and the rear support plate (25) installed on the rear side of the lower casing (20), the outdoor heat exchanger (10) is slid outward from the rear side to lower the casing. Since it can be removed from (20) and the outdoor heat exchanger (10) does not have to be pulled upward, maintenance can be performed more easily.

-Effects of the embodiment-
According to this embodiment, the outdoor unit (1) includes the heat exchanger (10) in the lower space (S1) in which the casing (2) is surrounded by a plurality of lower columns (23) extending in the vertical direction. ) And the compressor (3) are arranged in the lower casing (20), and the upper space (S2) surrounded by a plurality of upper columns (33) extending in the vertical direction, the fan (7) is arranged An upper casing (30), and a connecting portion (50) for connecting the lower strut (22) and the upper strut (33) are provided.

The upper column (33) includes, at its lower end, a protrusion (51) that protrudes downward from the lower surface of the upper casing (30), and a joint (55) of the lower column (23) and the upper column. The protrusion (51) of (33) is connected to the upper casing (30) so that the upper casing (30) is fixed to the lower casing (20).

According to this embodiment, the upper casing (30) having the protruding portion (51) protruding downward is placed on the lower casing (20), and the lower support (23) provided on the lower casing (20) is mounted on the lower casing (20). The casing (2) is formed by connecting the projecting portion (51) of the upper column (33) provided in the upper casing (30) with the connecting portion (50). As described above, the upper casing (30) can be connected or assembled by placing the upper casing (30) on the lower casing (20) from above. ), It is possible to remove various components provided above the outdoor heat exchanger (10), so that the outdoor heat exchanger (10) can be accessed and maintenance work can be easily performed.

In addition, a taper taper part (53) is formed at the lower end of the protrusion part (51) so that the protrusion part (51) of the upper support pillar (33) can be easily inserted into the joint part (55) of the lower support pillar (23). Therefore, the work of attaching the upper casing (30) suspended by an overhead crane or the like to the lower casing (20) can be easily performed.

According to this embodiment, the lower unit (2A) and the upper unit (2B) are separately manufactured in parallel with each other, and then the lower unit (2A) and the upper unit (2B) are assembled into one outdoor unit. (1) can be manufactured. Therefore, it is possible to shorten the manufacturing time of one outdoor unit as compared with the conventional general manufacturing method in which all components are mounted in one casing.

According to this embodiment, the mounting surface (57) on which the upper casing (30) is mounted is formed at the upper end of the lower support column (23), and more specifically, is mounted on the upper casing (30). A mounting surface (57) on which the lower edge (36c), which is the lower end surface of the side panel (36), is mounted. Therefore, the upper casing (30) can be easily placed and supported on the upper end of the lower column (23), and a structure that sufficiently supports the load acting from the upper casing (30) can be easily realized.

In addition, the lower support column (23) and the upper support column (33) have a cross-sectional shape having a plurality of bent portions, and have a characteristic of being difficult to buckle. The lower strut (23) and the upper strut (33) are used to constitute the connecting portion (50), and the lower first joint surface (56c) and the upper first joint surface (52c) are connected to the fastening bolt (59 ) And the lower second joint surface (56d) and the upper second joint surface (52d) are fastened by fastening bolts (59), so that the upper casing (20) is firmly attached to the lower casing (30). The configuration can be easily realized.

Further, regarding the configuration of the connecting portion (50), in this embodiment, the side panel (36) of the upper casing (30) is connected to the rectangular side plate (36a) and the lower edge portion (36c) connected to the lower side thereof. And the lower edge (36c) is placed on the mounting surface (57), so that the portion (side panel (37)) supported by the lower support (23) is attached to the upper casing (30). ) But not the part fixed to the upper casing (30). When the side panel (36) is removed, the fastening bolt (59) on the side surface of the connecting portion (50) can be accessed from above, so that the fastening bolt (59) can also be easily removed. Therefore, according to this embodiment, even when a plurality of outdoor units (1) are installed side by side, the outdoor unit (1) can be easily installed and maintained.

Regarding maintenance of the outdoor unit (1), such as when replacing the outdoor heat exchanger (10), when the conventional outdoor units are arranged side by side with a narrow clearance of about 20 mm, the bolts on the side of the casing Since it was provided near the center, it was difficult to remove the bolt because the clearance was narrow, and the work was very difficult. On the other hand, in this embodiment, the fastening bolt (59) is connected to the casing (2) by configuring the connecting portion (50) using the columns (23, 33) provided at the four corners of the casing (2). It will be located within the reach of the tool (spanner) easily from the front and back of 2), and the fastening bolt (59) can be easily attached and detached. Also, if the fastening bolt (59) is removed, the bolts on the other side can be easily removed by inserting a tool into the clearance from above, and the other bolts are provided on the front or back of the casing (2). Therefore, work can be done easily.

In the present embodiment, the casing (2) has a front plate (41 to 44) mounted on the upper casing (30) and the lower casing (20) as a front panel (40). In this configuration, the upper casing (30) is attached to the lower casing (20) to form one casing (2), and then the front panel (40) is attached to close the opening of the casing (2). . When this front panel is removed, a wide opening from the lower casing (20) to the upper casing (30) appears, and maintenance work can be easily performed in this respect.

Also, since the front panel (40) is mounted across the upper casing (30) and the lower casing (20), it has the effect of improving the strength of the casing (2).

<< Other Embodiments >>
About the said embodiment, it is good also as the following structures.

-First modification-
In the embodiment described above, the outdoor unit (1) in which the first unit (1A) and the second unit (1B) arranged on the left and right are integrated has been described. However, the outdoor unit (1) of the present disclosure has one It may consist only of units. In other words, in the above-described embodiment, the outdoor unit (1) is configured with two outdoor heat exchangers (10a, 10b), but the outdoor unit (1) has only one outdoor heat exchanger (10). You may make it the structure which consists of. In that case, the number and size of the outdoor heat exchangers may be determined according to the required capacity of the outdoor heat exchanger.

-Second modification-
In the above embodiment, the outdoor unit (1) having the heat exchanger (10) having a U-shape in plan view has been described, but the casing (2) is accommodated by the compressor (3) and the heat exchanger (10). As long as it is configured to connect the lower casing (20) to the upper casing (30) in which the fan (7) is accommodated by the connecting portion (50), the shape and arrangement of the outdoor heat exchanger (10) May be changed. For example, in the outdoor unit (1) having only one first unit (1A), three plate-like heat exchangers may be arranged on the three side surfaces of the casing (2), or one bent portion. You may arrange | position combining the L-shaped heat exchanger which has this, and a plate-shaped heat exchanger.

-Third modification-
In the above embodiment, the mounting surface (57) is formed on the upper end of the lower support column (23), and the side panel (36) of the upper casing (30) is mounted, but other than the side panel (36). You may comprise so that a part may be mounted on a mounting surface (57).

Also, the mounting surface (57) may be provided at a location different from the lower support column (23).

-Fourth modification-
In the above embodiment, the front panel (40) is formed as a member spanning the lower casing (20) and the upper casing (30) so as to cover from the lower end of the lower casing (20) to the upper end of the upper casing (30). However, the front panel (40) may be divided into upper and lower parts and attached to the lower casing (20) and the upper casing (30), respectively.

-Fifth modification-
In the above embodiment, the upper casing (30) is provided with the protrusion (51), and the lower casing (20) is provided with the joint (55) to which the protrusion (51) is joined. A projecting portion (not shown) projecting upward may be provided on (20), and a joint portion (55) may be provided on the upper casing (30).

In the above embodiment, in the configuration in which the protrusion (51) protrudes downward from the upper casing (30), the joint (22) is an end of the lower support (23) and is lower than the lower casing (20). Although it does not protrude upward, this joint (55) may also protrude upward from the lower casing (20). In this configuration, the upper casing (30) is formed with an opening for receiving the joint (55). In this configuration as well, the positional relationship between the protrusion and the joint may be reversed, and the protrusion may be provided in the lower casing (20) and the joint may be provided in the upper casing (30). Further, the combination of the protruding portion and the joining portion is not limited to the configuration described in the embodiment and the modification example, and may be appropriately changed.

In the above embodiment, as shown in FIG. 16, the joining surfaces (52c, 56c) (52d, 56) of the upper support column (33) and the lower support column (23) are overlapped and connected by the fastening bolt (59). However, a configuration may be adopted in which one of the upper support column (33) and the lower support column (23) is inserted into the other and connected using a fastening member.

The embodiment and the modification have been described above, but various changes in form and details are possible without departing from the spirit and scope of the claims. In addition, the above embodiments and modifications may be appropriately combined or replaced as long as the functions of the subject of the present disclosure are not impaired.

As described above, the present disclosure is useful for an outdoor unit of an air conditioner.

1 Outdoor unit 2 Casing 3 Compressor (component of refrigerant circuit)
4 Accumulator (component of refrigerant circuit)
5 Oil separator (component of refrigerant circuit)
7 Fan 10 Outdoor heat exchanger (component of refrigerant circuit)
20 Lower casing 23 Lower support column 30 Upper casing 33 Upper support column 36 Side panel

36a Side plate

36c Lower edge 40 Front panel 41 First front plate 42 Second front plate 43 Third front plate 44 Fourth front plate 50 Connecting part 51 Projection 57 Mounting surface S1 Lower space S2 Upper space

Claims

An air conditioner outdoor unit in which components (3, 4, 5, 10) of a refrigerant circuit are arranged in a casing (2),
The casing (2)
A lower part having a plurality of lower pillars (23) extending in the vertical direction, in which a heat exchanger (10) and a compressor (3) are arranged in a lower space (S1) surrounded by the lower pillars (23) A casing (20);
An upper casing (30) provided with a plurality of upper struts (33) extending in the vertical direction and having a fan (7) disposed in an upper space (S2) surrounded by the upper struts (33);
A connecting portion (50) provided on the lower support column (23) and the upper support column (33) so as to connect the lower casing (20) and the upper casing (30);
With
The connecting portion (50) includes a protrusion (51) included in any one of the upper strut (33) and the lower strut (23), and the protrusion (51) as the upper strut (33) and the lower strut. An outdoor unit for an air conditioner, comprising: a joint (55) for joining to the other end of the support (23).
In claim 1,
The protruding portion (51) is configured by a portion in which the upper support column (33) protrudes downward from the lower surface of the upper casing (30),
The outdoor unit of an air conditioner, wherein the joint (55) is configured by an upper end portion of the lower support (23).
In claim 2,
The lower column (23) has an installation surface (57) on which the upper casing (30) is placed at the upper end thereof, and is an outdoor unit for an air conditioner.
In claim 3,
The upper casing (30) has a side panel (36),
The outdoor unit of an air conditioner, wherein a lower end surface of the side panel (36) is placed on a placement surface (57) of the lower support (23).
In claim 3 or 4,
The side panel (36) of the upper casing (30) includes a rectangular side plate (36a) that covers the side surface of the upper casing (30), and a lower edge (36c) that is connected to the side plate (36a) at its lower side. And an outdoor unit for an air conditioner.
In any one of claims 1 to 5,
The outdoor unit of an air conditioner, wherein the casing (2) has a front plate (41 to 44) mounted across the upper casing (30) and the lower casing (20).