JP4816660B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner, and particularly relates to a structure of a casing of the outdoor unit.

  The outdoor unit of the air conditioner includes a rectangular parallelepiped casing that houses a part of the vapor compression refrigeration circuit. Below the bottom plate of the casing, a foundation leg fixed with a bolt to a foundation base at the installation location is fixed (for example, see Patent Document 1). As shown in FIG. 1 of Patent Document 1, a notch for introducing refrigerant communication pipes is formed on the right front plate on the front right side of the casing. However, models that do not use this notch are closed by a cover.

  When the operator removes the right front plate for maintenance of the compressor or the like, remove the cover, then shift the right front plate downward, and move the upper end of the right front plate away from the top plate. At this time, since there is a notch at the lower end of the right front plate, there is no interference between the base leg and the lower end of the right front plate.

Usually, in the outdoor unit, the pitch of the base legs is set to be constant so that the conventional base is reused even when the specifications are updated. However, when the width of the outdoor unit is increased, the pitch of the base leg is the same, so the notch at the lower end of the right front plate is no longer located above the base leg, and interferes with the base leg when the right front plate is lowered. In this case, it may be difficult to remove the right front plate.
JP 2003-106571 A

  An object of the present invention is to provide an air conditioner that prevents interference between the base leg and the lower end of the front plate when the right front plate is removed, even when the width of the outdoor unit is increased while the pitch of the base leg remains constant by updating the outdoor unit. The object is to provide an outdoor unit of the apparatus.

An outdoor unit of an air conditioner according to a first aspect of the present invention is an outdoor unit of an air conditioner that is installed on a plurality of existing base legs and whose relative positional relationship with the base legs is changed, and is a vapor compression refrigeration circuit A casing for storing a part of the housing. The casing has a bottom plate, a first front plate, a second front plate, and a top plate . The bottom plate is provided with a foundation leg on the lower surface . The first front plate is provided with an air outlet. The second front plate is adjacent to the first front plate, is located above one base leg, and is fastened to the bottom plate. The top plate movably supports the upper end of the second front plate. At the lower end of the second front plate facing the base leg, a notch and a notch are formed. The notch is located immediately above the base leg and has a width dimension that is larger than the width dimension of the base leg. The non-notched portion is an uncut region that is adjacent from the notch toward the first front plate . The notch boundary, which is the boundary between the notch and the non-notch portion, is directed toward the direction of narrowing the area of the non-notch portion as it is closer to the lower end. When the fastening with the bottom plate is released, the second front plate descends below the bottom plate without interference between the non-notched portion and the base leg.

In this outdoor unit, even when the lateral width of the casing is increased and the relative position between the lower end of the second front plate and the base leg changes, the width dimension of the notch is larger than the width dimension of the base leg and faces downward. Therefore, the movement of the second front plate in the vertically downward direction is not prevented by the base leg, and the operator can remove the second front plate by dropping it down from the casing. As a result, even when the lateral width of the casing is increased, workability is prevented from being lowered. Moreover, since the space | interval of foundation legs is invariable, it is not necessary to change the space | interval of each installation position to which each foundation leg is fixed, and it is convenient.

  The outdoor unit of the air conditioner according to the second aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect of the present invention, and the notch boundary is formed in a step shape.

  In this outdoor unit, a notch having a width dimension that does not interfere with the base leg without lowering the strength of the base of the non-notch portion is provided.

  The outdoor unit of the air conditioner according to the third aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect of the present invention, and the notch boundary is formed in a sloping linear shape.

  In this outdoor unit, a notch having a width dimension that does not interfere with the base leg without lowering the strength of the base of the non-notch portion is provided. The notch boundary can continue to descend while sliding even when it contacts the upper edge of the base leg.

An outdoor unit of an air conditioner according to a fourth aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect of the present invention, wherein the casing further includes a horizontal movement blocking part and a vertical movement blocking part. The horizontal movement blocking unit blocks the movement of the second front plate in the horizontal direction. The vertical movement blocking unit blocks the movement of the second front plate in the vertical direction.

In this outdoor unit, since there is a horizontal movement blocking member and a vertical blocking member, when the operator puts the top plate on the casing, there is no need to fasten the top plate and the upper end of the second front plate , Workability is good.

In the outdoor unit of the air conditioner according to the first aspect of the present invention, even when the lateral width of the casing increases and the relative position between the lower end of the second front plate and the base leg changes, the width dimension of the notch is the width of the base leg. Since it is larger than the size and is expanded downward, the vertical downward movement of the second front plate is not prevented by the base leg, and the operator lowers the second front plate directly from the casing. Can be removed. As a result, even when the lateral width of the casing is increased, workability is prevented from being lowered.

  In the outdoor unit of the air conditioner according to the second aspect of the present invention, a notch having a width dimension that does not interfere with the base leg is provided without reducing the strength of the base of the non-notch.

  In the outdoor unit of the air conditioner according to the third aspect of the present invention, a notch having a width dimension that does not interfere with the base leg is provided without reducing the strength of the base of the non-notch. The notch boundary can continue to descend while sliding even when it contacts the upper edge of the base leg.

In the outdoor unit of the air conditioner according to the fourth aspect of the present invention, since the horizontal movement blocking member and the vertical blocking member are present, when the operator puts the top plate on the casing, the upper ends of the top plate and the second front plate There is no need to fasten and the workability is good.

  Embodiments of the present invention will be described below with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<Configuration of outdoor unit 2>
FIG. 1 is a plan view of an outdoor unit according to an embodiment of the present invention, in which the top plate is removed and the inside is shown in a plan view. In FIG. 1, in the outdoor unit 2, the inside of a substantially rectangular parallelepiped casing 20 is divided into a machine room 20a and a blower room 20b by a partition plate 28 extending vertically. The outdoor unit 2 is connected to an indoor unit (not shown) disposed indoors via a refrigerant communication pipe (not shown).

  The outdoor unit 2 is necessary for the configuration of the vapor compression refrigeration circuit such as the outdoor fan 4, the compressor 51, the outdoor heat exchanger 52, the liquid side shut-off valve 61, the gas side shut-off valve 62, and piping other than the casing 20. It is equipped with various members. In the outdoor unit 2, when the outdoor fan 4 is operating, air is sucked from the directions B and C in FIG. 1, exchanges heat with the outdoor heat exchanger 52, and then blows out in the direction A.

(Outdoor fan 4)
The outdoor fan 4 is a propeller fan having a plurality of blades, and is disposed on the front side of the outdoor heat exchanger 52 in the blower chamber 20b so as to face the air outlet 23a. The outdoor fan 4 is rotationally driven by an outdoor fan electric motor 4a.

(Casing 20)
2 is a front view of the outdoor unit according to the present embodiment, FIG. 3 is a right side view of the outdoor unit according to the present embodiment, and FIG. 4 is a rear view of the outdoor unit according to the present embodiment. is there. 1 and 2, the casing 20 has a substantially rectangular parallelepiped shape, and its six surfaces are a bottom plate 21, a first front plate 23, a second front plate 24, a right side plate 25, a suction grill 26 and a top plate 29. (See FIG. 2).

  The bottom plate 21 is a substantially rectangular metal plate-like member that constitutes the bottom portion of the casing 20, and the peripheral edge of the bottom plate 21 is bent upward. On the lower surface of the bottom plate 21, two foundation legs 98 are provided that are fixed to the foundation platform 99 at the installation location. The base leg 98 is a metal plate-like member extending from the front side to the rear side of the casing 20.

  The first front plate 23 forms a front surface and a left side surface on the left side of the front end of the partition plate 28 when the air outlet 23a side is the front surface. The first front plate 23 is formed with a suction port for sucking air from the direction C. Further, the first front plate 23 is provided with an air outlet 23a for blowing out air sucked from the directions B and C to the outside.

  The second front plate 24 forms a part of the right front surface and the right side surface from the front end of the partition plate 28. As shown in FIGS. 2 and 3, a front lower cover 39 is attached to the lower part of the second front plate 24. The front lower cover 39 is a member for closing the notch 241 at the lower end of the second front plate 24, and has a hole 39a. The hole 39a is fitted with a claw 244 protruding from the end face of the notch 241 in the front direction of FIG.

  A region not cut out (non-notched portion) at the lower front end of the front face of the second front plate 24 is fastened by a screw 90 to a region where the peripheral edge of the bottom plate 21 is bent upward. At this time, the front lower end of the second front plate 24 is fastened so as to be outside the peripheral edge of the bottom plate 21. As shown in FIG. 3, the front lower cover 39 is fixed to the lower right side surface of the second front plate 24 and the peripheral edge portion of the bottom plate 21 by screws 90.

  Next, the notch and the non-notch will be described in detail. FIG. 5A is a front view of the casing in which the front lower cover is moved to the right to expose the notch, and FIG. 5B is a diagram in which the second front plate is moved vertically downward from the state of FIG. FIG. 5A and 5B, the notch 241 is formed from the lower front end of the second front plate 24 to the lower right end. In the present embodiment, a notch 241 is formed in a part of the lower end of the front surface of the second front plate 24 and the entire lower end of the right side surface of the second front plate 24. Moreover, the notch 241 and the non-notch part 242 are adjacent to each other at the lower end of the second front plate 24. Here, for convenience of explanation, a boundary between the notch 241 and the non-notch 242 is referred to as a notch boundary 243.

(Functions of the notch 241 and the non-notch 242)
When the operator removes the second front plate 24 from the casing 20, first, the operator removes the front lower cover 39 from the casing 20 and removes the screw 90 of the non-notched portion 242. Since the upper end of the second front plate 24 is only inside the area of the top plate 29 that has been cut and bent downward, the lower end of the second front plate 24 descends vertically by its own weight when the screw 90 is removed. Can do. At that time, if there is no notch 241, the lower end of the second front plate 24 interferes with the base leg 98 and cannot be lowered. However, since the notch 241 is provided, the base leg 98 can be lowered without being buffered.

  The second front plate 24 is removed when the operator connects the liquid refrigerant communication pipe 18 and the gas refrigerant communication pipe 19 to the liquid side closing valve 61 and the gas side closing valve 62 or in the machine room 20a. This is when maintenance of equipment such as the compressor 51 is performed.

  When the outdoor unit 2 is installed, first, the base 99 is installed on the ground, and the base leg 98 is fastened to the base 99 with bolts. Even when the outdoor unit 2 is updated and the width dimension of the casing 20 is enlarged, the pitch of the foundation legs 98 is set to the same pitch as that before the update so that the already installed foundation platform 99 can be used. And since the position of the 2nd front board 24 moves to the right when the width dimension of the casing 20 expands, the width dimension of the notch 241 is set large in anticipation of the movement amount of the 2nd front board 24. .

  However, if the width dimension of the notch 241 is simply increased, the width dimension of the non-notch part 242 becomes smaller and the strength becomes insufficient, so that the non-notch part 242 may have a certain strength. There must be. Therefore, in the present embodiment, the notch boundary 243 is formed in a step shape so as to go in the direction of narrowing the area of the non-notch portion 242 as it approaches the lower end.

  As a result, the width dimension of the notch 241 is set to be large in anticipation of the expansion of the width dimension of the casing 20 after the update in a portion close to the base leg 98, and the width of the casing 20 before the update in a part far from the base leg 98. Since it is set according to the size, the size of the base of the non-notch 242 is increased and the strength is increased.

  The right side plate 25 is adjacent to the second front plate 24 and forms the remainder of the right side surface of the casing 20 and a part of the back surface. As shown in FIGS. 3 and 4, a lower back cover 40 is attached to the lower portion of the right side plate 25, and this lower back cover 40 is a member for closing the opening 251 at the lower end of the right side plate 25. is there.

  Since the liquid refrigerant communication pipe 18, the gas refrigerant communication pipe 19 and the electric wire are inserted into the opening 251, the back lower cover 40 is opened with the liquid refrigerant communication pipe 18, the gas refrigerant communication pipe 19 and the electric wire penetrating therethrough. 251 is closed. Depending on the installation conditions of the outdoor unit 2, the back lower cover 40 may be in a state where only the liquid refrigerant communication pipe 18 and the gas refrigerant communication pipe 19 are penetrated, or in a state where only the electric wire is penetrated. .

  The lower back cover 40 is fixed to the lower right side of the right side plate 25 and the peripheral edge of the bottom plate 21 by screws 90. For the rear lower cover 40, for convenience of explanation, a region fixed to the lower right side of the right plate 25 and the peripheral edge of the bottom plate 21 is a cover fixing portion 41, and a free end of the non-fixed region is a cover free end portion 42. To do. The cover free end 42 enters the inside of the lower part on the back side of the right side plate 25.

  The suction grill 26 forms the remaining back surface adjacent to the right side plate 25, and an air inlet 26 c that is sucked into the casing 20 by the outdoor fan 4 is formed.

  In FIG. 1, the partition plate 28 has a bent shape so as to protrude toward the blower chamber 20b, and is arranged so as to partition the inside of the casing 20 into two left and right spaces. The front side end of the partition plate 28 is fastened to the right end portion of the first front plate 23 with a screw or the like, and the back side end portion of the partition plate 28 is fastened to the front side end of the tube plate 59 with a screw or the like. .

  The tube sheet 59 is a substantially L-shaped member arranged along the back surface from the left side surface of the casing 20, and is provided so as to face the right end surface of the outdoor heat exchanger 52. The lower part is fixed to the bottom plate 21 with screws or the like.

  The top plate 29 is a horizontally long, substantially rectangular metal plate-like member constituting the top surface portion of the outdoor unit 2, and the peripheral edge of the top plate 29 is bent downward. In the present embodiment, the second front plate 24 is held by the top plate 29 by the upper end of the second front plate 24 entering the inside of the region cut and bent downward at the peripheral edge of the top plate 29. Screws are not fastened. Therefore, by eliminating the screw fastening between the lower end of the second front plate 24 and the peripheral edge portion of the bottom plate 21, the second front plate 24 descends downward and is removed from the casing 20. Since the inside of the machine room 20a can be seen when the second front plate 24 is removed, the second front plate 24 is removed when performing maintenance work on the components accommodated in the machine room 20a. .

(Closed valve mounting plate 30)
As shown in FIG. 1, the closing valve mounting plate 30 is an elongated plate-like shape provided in the machine room 20 a so as to be spanned between the right end portion of the first front plate 23 and the front end portion of the right side plate 25. This is a metal member having a first region 30 a, a second region 30 b, and a fixing portion 31. The shut-off valve mounting plate 30 is disposed at a height position near the upper end of the compressor 51 in the machine room 20a.

  The first region 30a is formed by the second front plate 24 from the right end portion of the first front plate 23 toward the right side surface portion of the second front plate 24 in a state where the closing valve mounting plate 30 is disposed in the machine room 20a. The second front plate 24 extends substantially parallel to the front portion, and then extends while being inclined away from the front portion of the second front plate 24, and then toward the right side portion of the second front plate 24. It is a part extending substantially parallel to the part. The first region 30 a has a support portion 33 held at the right end portion of the first front plate 23 together with the front end portion of the partition plate 28 at the left end in the longitudinal direction.

  The second region 30b is formed from the front surface portion of the second front plate 24 from the right end in the longitudinal direction of the first region 30a toward the front end of the right side plate 25 in a state where the closing valve mounting plate 30 is disposed in the machine room 20a. It is a portion that extends while inclining in a direction away from it. The second region 30b is a portion where the liquid side closing valve 61 and the gas side closing valve 62 are mounted, and the liquid side closing valve 61 and the gas side closing valve 62 can be mounted side by side in the longitudinal direction. In a state where the closing valve mounting plate 30 is disposed in the machine room 20 a, the gas side closing valve 62 is mounted on the right side surface portion side of the second front plate 24, and the liquid side closing valve 61 is placed on the left side of the gas side closing valve 62. Is installed.

(Compressor 51)
In FIG. 1, a compressor 51 is a hermetic compressor in which a compressor motor is built in a housing, and is disposed in a machine room 20a. The compressor 51 has a vertical cylindrical shape having a height of about 1/3 to 1/2 of the total height of the casing 20, and a lower portion thereof is fixed to the bottom plate 21. Further, the compressor 51 is disposed in the vicinity of the center in the front-rear direction of the machine room 20a and in the vicinity of the partition plate 28 of the machine room 20a in the plan view of the casing 20.

(Outdoor heat exchanger 52)
The outdoor heat exchanger 52 is disposed in the blower chamber 20 b and exchanges heat with the air sucked into the casing 20 by the outdoor fan 4. The outdoor heat exchanger 52 has a substantially L shape in a plan view of FIG. 1 and is disposed along the back surface from the left side surface of the casing 20.

(Electrical component box 55)
The electrical component box 55 is a casing formed of a resin excellent in electrical insulation, and includes a control unit that communicates with an indoor unit (not shown) to control the outdoor fan motor 4a, the compressor 51, and the like. Built-in. The electrical component box 55 is attached to the partition plate 28.

(Electrical component box mounting plate 56)
The electrical component box mounting plate 56 is a sheet metal member that mounts the electrical component box 55 on the partition plate 28, and has mounting claws 56 a that are hooked on the partition plate 28. The attachment claw 56 a is hooked on the partition plate 28 by being inserted into a claw insertion hole 28 a provided in the partition plate 28 in advance.

<Features>
In the outdoor unit 2, the second front plate 24 of the casing 20 is located above the base leg 98. A notch 241 and a notch 242 are formed at the lower end of the second front plate 24 facing the base leg 98, and the notch 241 has a width dimension larger than the width dimension of the base leg 98. It is missing. A notch boundary 243 that is a boundary between the notch 241 and the non-notch portion 242 is formed in a stepped shape so as to be closer to the lower end and toward a direction in which the area of the non-notch portion 242 is narrowed. As a result, the lateral width of the casing 20 increases, and even when the relative position between the lower end of the second front plate 24 and the base leg 98 changes, the base leg 98 prevents the second front plate 24 from moving vertically downward. Never happen. Moreover, since the notch boundary 243 has a stepped shape, the strength of the base of the non-notched portion is not reduced.

<Modification>
In the above embodiment, the notch boundary 243 is formed so as to be stepped in the direction of narrowing the area of the non-notch part 242 as it approaches the lower end, but is not limited thereto. Hereinafter, description will be given with reference to the drawings.

  FIG. 6A is a front view of the casing in which the front lower cover of the outdoor unit according to the modification is moved to the right to expose the notch, and FIG. 6B is a second front view from the state of FIG. It is a front view of the casing which moved the board vertically downward. 6 (a) and 6 (b), the notch boundary 243 is formed in a linear shape that inclines toward the direction of narrowing the area of the non-notch 242 as it approaches the lower end.

  As a result, the area of the non-notch part 242 is large and the strength is high as compared with the case where the notch boundary 243 is formed in a stepped shape. Further, when the notch boundary 243 contacts the upper edge of the base leg 98 during the lowering of the second front plate 24, the notch boundary 243 is in sliding contact with the upper edge of the base leg 98, so that the second front plate The 24 descent is unimpeded.

  As described above, according to the present invention, since the base leg does not get in the way when the front plate is shifted and removed from the casing, it is useful for the structure for removing the side plate from the housing.

The top view of the outdoor unit which concerns on one Embodiment of this invention. The front view of the outdoor unit which concerns on this embodiment. The right view of the outdoor unit which concerns on this embodiment. The rear view of the outdoor unit which concerns on this embodiment. (A) The front view of the casing which moved the front lower cover to the right and exposed the notch. (B) The front view of the casing which moved the 2nd front board to the downward direction from the state of (a). (A) The front view of the casing which moved the front lower cover of the outdoor unit which concerns on a modification to the right, and exposed the notch. (B) The front view of the casing which moved the 2nd front board to the downward direction from the state of (a).

2 Outdoor unit 20 Casing 24 Second front plate (front component)
28 Base leg 29 Top plate 39a Hole (horizontal movement prevention part)
90 screw (vertical movement blocking part)
241 Notch 242 Non-notch 243 Notch boundary 244 Claw (horizontal movement blocking part)
245 Screw hole (vertical movement blocking part)

Claims (4)

An outdoor unit of an air conditioner that is installed on a plurality of existing foundation legs (98) and whose relative positional relationship with the foundation legs (98) is changed,
A casing (20) for housing a part of the vapor compression refrigeration circuit;
The casing (20)
A bottom plate (21) provided with a base leg (98) on its lower surface ;
A first front plate (23) provided with an outlet (23a);
A second front plate (24) adjacent to the first front plate (23), positioned above one of the base legs (98 ) and fastened to the bottom plate (21) ;
A top plate (29) that movably supports the upper end of the second front plate (24);
Have
At the lower end of the second front plate (24) facing the base leg (98),
A notch (241) located directly above the base leg (98) and having a width dimension cut out larger than the width dimension of the base leg (98);
An unnotched non-notched portion (242) that is adjacent to the notched portion (241) toward the first front plate (23) ,
Is formed,
The notch boundary (243), which is the boundary between the notch (241) and the non-notch part (242), is closer to the lower end and is directed toward the direction of narrowing the area of the non-notch part (242). And
When the fastening of the second front plate (24) with the bottom plate (21) is released, the non-notched portion (242) and the base leg (98) do not interfere with each other, and the bottom plate (21) Descending down,
Air conditioner outdoor unit (2). The notch boundary (243) is formed in a staircase shape,
The outdoor unit (2) of the air conditioning apparatus according to claim 1. The notch boundary (243) is formed in an inclined linear shape,
The outdoor unit (2) of the air conditioning apparatus according to claim 1. The casing (20)
Horizontal movement blocking portions (39a, 244) for blocking the movement of the second front plate (24) in the horizontal direction;
A vertical movement blocking portion (90, 245) for blocking the movement of the second front plate (24) in the vertical direction ;
Further having
The outdoor unit (2) of the air conditioning apparatus according to claim 1.

Images