JP5849795B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly to a drain pan support structure for an indoor unit of an air conditioner.

  A blower driven by a drive motor, an indoor heat exchanger, and a casing that houses a drain pan are included. The blower is fixed to the top plate of the casing, and an indoor suction port is formed below the casing. As an air conditioner, for example, a ceiling-embedded air conditioner described in Patent Document 1 is known.

  This type of ceiling-embedded air conditioner has a drain pan that extends over the entire casing in the longitudinal direction of the casing that is rectangular in plan view. In such ceiling-embedded air conditioners, foamed resin molded products are often used as drain pans. And the drain stored by the drain pan is often discharged | emitted from the edge part of the longitudinal direction of such a foamed resin drain pan. For this reason, the drain pan is generally supported by the frame structure so as not to bend downward at an intermediate portion in the longitudinal direction.

JP 2003-287239 A

  However, in the ceiling-embedded air conditioner, the frame structure that supports the drain pan is a cause of weight increase. Therefore, a drain pan support structure that does not require such a frame structure is required from the viewpoints of easy transportation, easy installation work, and cost reduction.

  In order to solve the above-mentioned problems, the present invention provides an air conditioner that is lightened by eliminating the frame structure for suppressing the bending of the middle part of the drain pan in the longitudinal direction and adopting an alternative structure. With the goal.

An air conditioner according to a first aspect of the present invention has a blower driven by a drive motor, an indoor heat exchanger, and a casing that houses a drain pan, and the blower is fixed to the top plate of the casing. In addition, in the air conditioner in which an indoor suction port is formed below the casing, the drain pan has a rectangular shape in plan view, and its longitudinal end is fixed to the casing. An intermediate part in the longitudinal direction is supported on the top plate by a suspension member suspended from the top plate, and the blower is composed of two turbofans arranged with a rotation axis in the vertical direction, and the two turbofans are The drain pans are spaced apart from each other in the longitudinal direction of the drain pan, and the suspension member is disposed between the two turbo fans in the longitudinal direction of the drain pan. Cut that has been configured to serve as the function of the partition wall.

  According to the said structure, since the intermediate part of the longitudinal direction of a drain pan is supported by a top plate with a suspension member, bending is suppressed. In addition, the casing is normally provided with the intensity | strength which supports internal apparatuses, such as an indoor side heat exchanger and an air blower. In particular, the top plate of the casing is generally provided with a drive motor for the blower, and is sufficiently reinforced by ribs in order to suppress vibration due to the excitation force of the drive motor. Therefore, by supporting the middle part of the drain pan in the longitudinal direction on the top plate by the suspension member, the frame structure for supporting the drain pan which has been generally performed conventionally can be omitted and the deflection of the drain pan can be suppressed. . Moreover, an air conditioner can be reduced in weight by comprising an air conditioner in this way.

The blower is composed of two turbofans spaced apart from each other in the longitudinal direction of the drain pan.The two turbofans are spaced apart from each other in the longitudinal direction of the drain pan . It is comprised so that it may serve as the function of the partition wall which partitions off between the said two turbo fans in the longitudinal direction of the said drain pan. According to the said structure, the intermediate part of the longitudinal direction of a drain pan can be effectively supported by the suspension member arrange | positioned between two turbo fans .

In addition, since the suspension member also functions as a partition wall that partitions between the two turbofans , the number of components constituting the air conditioner is reduced as compared with a configuration in which the suspension member and the partition wall are individually formed.

Further, in the air conditioner, an electrical component box is disposed below the drain pan, the electrical component box is fixed to the suspension member, and the drain pan is supported from below by the electrical component box. Supported by the top board .

  According to the said structure, a drain pan is supported by a top plate in the state by which the intermediate part of the longitudinal direction of the drain pan was supported by the electrical component box by fixing an electrical component box to a suspension member. Therefore, since the drain pan is supported from below by the electrical component box with a wide support area, it is possible to effectively prevent the drain pan from being bent.

In the air conditioner of the present invention, the longitudinal intermediate portion of the drain pan is supported on the top plate by the suspension member fixed to the top plate of the casing, so the frame structure is eliminated and the longitudinal intermediate portion of the drain pan is bent. Can be suppressed. Moreover, since the suspension member also functions as a partition wall for partitioning between the two turbofans, it is not necessary to form the suspension member and the partition wall separately, and the number of parts constituting the air conditioner can be reduced. Further, since the drain pan is supported from below by the electrical component box with a wide support area, it is possible to effectively prevent the drain pan from being bent.

About the air conditioner of one Embodiment, (a) is an external appearance perspective view of the air conditioner, (b) is a top view of the air conditioner. It is the plane sectional view which showed the apparatus arrangement | positioning inside the product main body in the air conditioner. It is the bottom view which showed equipment arrangement | positioning inside the product main body in the air conditioner, and abbreviate | omitted the decorative panel. It is the sectional side view which showed the air blower of the same air conditioner, and the device arrangement | positioning of the periphery. It is the sectional side view which showed the partition wall of the air conditioner, and the device arrangement | positioning of the periphery. It is a perspective view of the partition wall of the same air conditioner. It is the sectional side view which showed the partition wall in the air conditioner of other embodiment, and the apparatus arrangement | positioning of the periphery. It is the sectional side view which showed the downward fixing | fixed part of the partition wall in the air conditioner of other embodiment, and the apparatus arrangement | positioning of the periphery. It is the plane sectional view showing device arrangement inside a product main part in an air harmony machine of other embodiments.

With reference to FIGS. 1-6, the structure of the air conditioner which concerns on this Embodiment is demonstrated.
The air conditioner according to the present embodiment is a two-way blowing type ceiling-embedded air conditioner, and constitutes an indoor unit in a separation type air conditioner.

  As shown in FIG. 1A, this ceiling-embedded air conditioner is a rectangular parallelepiped ceiling-embedded air conditioner having a rectangular planar shape, and includes a decorative panel 10 and the decorative panel 10. It is comprised from the product main body 20 connected upwards. The decorative panel 10 is attached to the ceiling material 1 (see FIG. 4), and the product main body 20 is attached so as to be suspended from a building structural member (not shown) on the back of the ceiling. Both the decorative panel 10 and the product main body 20 have a rectangular planar shape, but the product main body 20 has a rectangular shape that is slightly smaller than the decorative panel 10.

  Hereinafter, the longitudinal direction of the indoor unit is referred to as “longitudinal direction X”, and the short direction of the indoor unit is referred to as “short direction Y”. Further, one side in the longitudinal direction X is “X1” and the other side in the longitudinal direction X is “X2”, which are defined as shown in FIG. 1 and FIG.

  As shown in FIG. 1A and FIG. 4, the decorative panel 10 is formed with an indoor outlet 11 that blows out air whose temperature is adjusted along two opposing long sides. In addition, an elongated indoor inlet 12 for sucking indoor air is formed along the inside of the indoor outlet 11.

  As shown in FIGS. 1 to 3, the product main body 20 includes a blower 30, an indoor heat exchanger 40, a drain pan 50, two electrical component units 80, 90, etc. Built in.

  The main body casing 21 is formed with a side plate 22 that surrounds the blower 30 and the indoor heat exchanger 40 and a top plate 23 that covers the blower 30 and the indoor heat exchanger 40 from above. The top plate 23 is reinforced by a plurality of ribs 23A (see FIG. 1B). Here, the casing of the ceiling-embedded air conditioner in this specification refers to a combination of the main body casing 21 of the product main body 20 and the decorative panel 10.

  As shown in FIG. 2, two blowers 30 are arranged in the longitudinal direction X with a certain interval. The blower 30 is a centrifugal blower disposed in the product main body 20 with the rotation axis as a vertical direction, more specifically, a turbo fan. More specifically, as shown in FIG. 2, the blower 30 is attached so that the rotation axis is positioned on a center line CL extending in the longitudinal direction X when seen in a plan view. Further, as shown in FIG. 3, the blower 30 is configured to be rotated in the direction of the rotation arrow shown in FIG. 2 by a drive motor 32 attached to the top plate 23 of the main body casing 21. Further, the blower 30 is configured so that the shroud 33 is a lower surface, air is sucked from an opening on the inner peripheral side of the shroud 33, and air is blown out in the outer peripheral direction of the impeller 31. The blower 30 has a bell mouth 34 so as to communicate with the shroud 33. The bell mouth 34 is configured to communicate with the indoor suction port 12 through the air filter 24 disposed on the lower surface in the product main body 20 and the internal space 13 of the decorative panel 10.

  Further, as shown in FIG. 2, a partition wall 70 for partitioning the blow-out side space of both the blowers 30 is installed at an intermediate portion of these blowers 30. Further, the blowers 30 are arranged such that the midpoint thereof is biased toward the X2 side in the longitudinal direction X in the product main body 20.

  The indoor heat exchanger 40 includes two branch heat exchangers 41 disposed between the two indoor outlets 11 and the blower 30 when viewed in plan. Therefore, each branch heat exchanger 41 is disposed at a position on the blowing side of the blower 30. The branch heat exchanger 41 is a plate fin coil in which plate fins are attached to a U-shaped heat exchange tube (not shown).

  As shown in FIG. 2, a refrigerant circuit around the indoor heat exchanger 40 is formed on the side of the branch heat exchanger 41 where the pipe is connected to the heat exchange tube, that is, on the X1 side in the longitudinal direction X. Equipment, equipment related to refrigerant pipe connection with an outdoor unit (not shown), equipment for draining drain water, and the like are arranged. Specifically, around the indoor heat exchanger 40, a flow divider 61 for diverting the liquid refrigerant conveyed from the outdoor unit, and the refrigerant diverted by the flow divider 61 is conveyed to each branch heat exchanger 41. There are arranged a plurality of flow dividing pipes 62, a plurality of refrigerant outlet pipes 63 for letting out the gas refrigerant from the branch heat exchanger 41, and a header 64 for collecting the refrigerant outlet pipes 63. In addition, a liquid side pipe joint 65 and a gas side pipe joint 66 for connecting a communication pipe (not shown) with the outdoor unit are attached to the side plate 22 of the main body casing 21. Furthermore, a drain water level sensor 67 for detecting the level of drain water stored in the drain water storage part of the drain pan 50, a drain pump 68 for draining the accumulated drain water, and drain water pumped out by the drain pump 68 is discharged. There are disposed a discharge pipe 68A for connecting the pipe and a pipe joint 69 for connecting the discharge pipe 68A to a drain pipe outside the machine.

  The drain pan 50 is disposed below the indoor heat exchanger 40. Further, the drain pan 50 has a rectangular parallelepiped shape as viewed in a plan view, and has the same size as the main body casing 21. Further, in the drain pan 50, a portion immediately below the branch heat exchanger 41 is formed in a groove portion 51 for receiving drain water from the branch heat exchanger 41. Further, the drain pan 50 is connected to a portion other than the groove portion 51 in order to serve as a partition member that partitions the blowing side and the suction side of the blower 30. This portion is referred to as a partition plate combined portion 52 in this specification. However, as shown in FIG. 4, the partition plate portion 52 is formed such that a round hole 53 is opened at a portion where the bell mouth 34 is attached, and the air filter 24 and the bell mouth 34 are communicated with each other. Moreover, as shown in FIGS. 2 to 4, the partition plate combined part 52 communicates with the indoor outlet 11 of the decorative panel 10 below the space between the branch heat exchanger 41 and the side wall. An elongated square hole 54 is formed.

  The electrical component unit 80 is below the X1 side in the longitudinal direction X of the drain pan 50, more specifically, below the drain pan 50 located between the blower 30 on the X1 side and the end of the branch heat exchanger 41. Has been placed. The electrical component unit 80 includes an electrical component 81 for driving the drive motor 32 of the blower 30 on the X1 side, and an electrical component box 82 that houses the electrical component 81.

  In addition, an electrical component unit 90 is disposed below the drain pan 50 located at the intermediate portion between the blowers 30 in the longitudinal direction X of the drain pan 50. The electrical component unit 90 includes an electrical component 91 for driving the drive motor 32 of the blower 30 on the X2 side, and an electrical component box 92 that accommodates the electrical component 91.

  As shown in FIG. 3, the drain pan 50 is fixed to the main body casing 21 with bolts BT at both ends in the longitudinal direction X. Further, the intermediate portion of the drain pan 50 in the longitudinal direction X is suspended by a partition wall 70 as shown in FIG.

  As shown in FIG. 6, the partition wall 70 includes a plate-shaped partition main body 71, an upper fixing portion 72 for fixing to the top plate 23 of the main body casing 21, and a lower fixing portion 73 for fixing to the drain pan 50. And have.

  The partition main body 71 has three upper bent portions 71 </ b> A formed at regular intervals in the lateral direction Y by bending the upper end portion in the longitudinal direction X. The upper bent portion 71A on both sides in the short direction Y and the upper bent portion 71A in the center in the short direction Y are bent in opposite directions. Further, the partition main body 71 has three lower bent portions 71 </ b> B formed at regular intervals in the short direction Y by bending the lower end portion in the longitudinal direction X. The lower bent portion 71B is bent in the same direction as the upper bent portion 71A on both sides in the lateral direction Y. In addition, the partition main body 71 has one side bent portion 71 </ b> C that is bent in the longitudinal direction X at the center portion of the side that forms one end portion in the short-side direction Y.

  Two upper fixing portions 72 are formed at a constant interval in the short direction Y. The upper fixing portion 72 extends upward from the upper end portion of the partition main body 71. The upper fixing portion 72 has an L shape when viewed from the short direction Y.

  Two lower fixing portions 73 are formed at a constant interval in the lateral direction Y. The lower fixing portion 73 extends downward from the lower end portion of the partition main body 71. The lower fixing portion 73 has an L shape when viewed from the short direction Y. The lower fixing portion 73 is formed with a peripheral bent portion 73A that bends the peripheral edge thereof.

  Moreover, the partition wall 70 is being fixed to the top plate 23 of the main body casing 21 with the volt | bolt (illustration omitted), as FIG. 5 shows. The lower fixing portion 73 of the partition wall 70 is inserted into a through hole 55 formed in the drain pan 50. Further, the lower fixing portion 73 is fixed to the electrical component box 92 with bolts (not shown). Further, the partition main body 71 is adjacent to the upper surface of the drain pan 50 and the lower surface of the top plate 23 in a state of being fixed to the top plate 23 and the electrical component box 92.

Next, the operation of the ceiling-embedded air conditioner configured as described above will be described.
Since the drain pan 50 has a shape that is long in the longitudinal direction X, an intermediate portion in the longitudinal direction X is easily bent downward due to its own weight. On the other hand, since the top plate 23 supports the intermediate portion in the longitudinal direction X of the drain pan 50 through the partition wall 70, the intermediate portion in the longitudinal direction X of the drain pan 50 is difficult to bend.

  On the other hand, the partition wall 70 is fixed to the top plate 23 of the main body casing 21. As shown in FIG. 1B, the top plate 23 is sufficiently reinforced by ribs 23 </ b> A in order to suppress vibration due to the excitation force of the drive motor 32. Therefore, by supporting the intermediate portion in the longitudinal direction X of the drain pan 50 on the top plate 23 by the partition wall 70, the frame structure for supporting the drain pan which has been conventionally performed is omitted, and the drain pan 50 is bent. Can be suppressed.

Since the ceiling-embedded air conditioner according to the present embodiment is configured as described above, the following effects can be achieved.
(1) By supporting an intermediate portion in the longitudinal direction X of the drain pan 50 on the top plate 23 by the partition wall 70, a frame structure for supporting the drain pan which has been generally performed conventionally is omitted, and the drain pan 50 is bent. Can be suppressed. Further, by configuring the ceiling-embedded air conditioner in this manner, the ceiling-embedded air conditioner can be reduced in weight.

(2) A partition wall 70 is disposed in the middle part between the blowers 30. For this reason, the intermediate part of the longitudinal direction X of the drain pan 50 can be supported effectively.
(3) Since the partition wall 70 suspends the drain pan 50, the partition wall 70 has both a function of partitioning the blowing side space of both the fans 30 and a function of suspending the drain pan 50. Therefore, compared with the structure which forms separately the suspension member for supporting the drain pan 50, and the partition wall for partitioning the blowing side space of both the air blowers 30, the components which comprise a ceiling embedded type air conditioner are provided. Less.

  (4) The drain pan 50 is supported by the top plate 23 in a state where the middle part in the longitudinal direction X of the drain pan 50 is supported by the electrical component box 92 by fixing the electrical component box 92 to the partition wall 70. Therefore, since the drain pan 50 is supported from below by the electrical component box 92 with a wide support area, the drain pan 50 can be effectively prevented from being bent.

  (5) Since the two blowers 30 are arranged so that their midpoints are deviated toward the X2 side in the longitudinal direction X in the product main body 20, the end portions of the blower 30 and the branch heat exchanger 41 on the X2 side The space between the blower 30 on the other X1 side and the end of the branch heat exchanger 41 can be made larger than the space between the two. Therefore, this large space can be effectively used as a wiring space for connecting the electrical component unit 80 and the electrical components. In particular, electrical components such as the drain pump 68 and the drain water level sensor 67 are often connected near the end of the branch heat exchanger 41 on the X1 side, which is convenient for connecting these electrical components.

  (6) Since the peripheral bent portion 73 </ b> A is formed in the lower fixing portion 73 of the partition wall 70, the lower fixing portion 73 is reinforced. Thereby, when the partition wall 70 receives the weight of the drain pan 50 and a load is applied to the lower fixing portion 73, the deformation of the lower fixing portion 73 can be suppressed.

The present invention is not limited to the embodiment described above, and the following modifications are possible. In the following modification examples, different modification examples may be combined with each other.
In the ceiling-embedded air conditioner of the above embodiment, the top plate 23 supports the drain pan 50 via the partition wall 70. However, the present invention is not limited to this. As shown in FIG. 7, the top plate 23 may indicate the drain pan 50 through the suspension member 100 formed separately from the partition wall 70. The suspension member 100 is formed in a rod shape, the upper end portion is fixed to the top plate 23, and the lower end portion is fixed to the electrical component box 92 through the through hole 55 of the drain pan 50. Two suspension members 100 are arranged in the short-side direction Y at a constant interval. In addition, the suspension member 100 is located on the X1 side with respect to the partition wall 70 in the longitudinal direction X. The suspension member 100 may be located on the X2 side of the partition wall 70 in the longitudinal direction X. In the case of this modification, the lower fixing portion 73 is not formed on the partition wall 70.

  -In the said modification, the suspending member 100 can also be arrange | positioned in positions other than the intermediate part of both the air blowers 30, for example, the same position as the air blower 30 by the side of X1. In this case, a metal fixing plate is fixed at a position corresponding to the suspension member 100 in the drain pan 50. The suspension member 100 has an upper end fixed to the top plate 23 by a bolt and a lower end fixed to the fixed plate by a bolt.

  -In the said modification, the suspension member 100 can also be made into one piece. The suspension member 100 is disposed at the center position in the short direction Y of the drain pan 50. Further, the number of the suspension members 100 can be three or more.

  In the partition wall 70 of the above-described embodiment, the drain pan 50 is suspended by the lower fixing portion 73 being fixed to the electrical component box 92. However, the present invention is not limited to this. As shown in FIG. 8, the partition wall 70 may be configured to be directly fixed to the drain pan 50. More specifically, the drain pan 50 has a recess 56 instead of the through hole 55. A metal fixing plate 110 is fixed to the lower end of the recess 56. The lower fixing portion 73 is fixed to the fixing plate 110 by bolts (not shown).

  The ceiling-embedded air conditioner of the above embodiment has two blowers 30. However, the present invention is not limited to this. As shown in FIG. 9, it may be configured to have one blower 30. In this case, the partition wall 70 and the electrical component unit 90 are omitted from the ceiling-embedded air conditioner, and the suspension member 100 is added. The suspension member 100 supports an intermediate portion of the drain pan 50 in the longitudinal direction X. A fixing plate (not shown) for fixing the suspension member 100 is disposed at a position corresponding to the suspension member 100 in the drain pan 50.

  In the embodiment, the ceiling-embedded air conditioner has been described as the air conditioner. However, the present invention is not limited to this. The present invention can also be applied to a ceiling-mounted air conditioner having an indoor suction port 12 below as an air conditioner.

  X ... Longitudinal direction, 10 ... Cosmetic panel (casing), 12 ... Indoor suction port, 21 ... Main body casing (casing), 23 ... Top plate, 23A ... Rib, 30 ... Blower, 32 ... Drive motor, 40 ... Indoor heat Exchanger, 50 ... drain pan, 70 ... partition wall (suspending member), 92 ... electrical component box, 100 ... hanging member.

Claims (1)

A blower (30) driven by a drive motor (32), an indoor heat exchanger (40), and a casing (10, 21) that houses a drain pan (50) are provided, and the ceiling of the casing (10, 21) is provided. In the air conditioner in which the blower (30) is fixed to the plate (23) and the indoor suction port (12) is formed below the casing (10, 21),
The drain pan (50) has a rectangular shape in plan view, and its longitudinal end is fixed to the casing (10, 21), and the longitudinal intermediate portion is suspended from the top plate. Supported by the top plate (23) by a suspended member,
The blower (30) is composed of two turbofans arranged with the rotation axis as a vertical direction, and these two turbofans are arranged apart from each other in the longitudinal direction of the drain pan (50),
The suspension member is configured to function as a partition wall (70) for partitioning the two turbofans in the longitudinal direction of the drain pan (50) ,
An electrical component box (92) is disposed below the drain pan (50),
The electrical component box (92) is fixed to the suspension member,
The air conditioner characterized in that the drain pan (50) is supported by the top plate (23) in a state of being supported from below by the electrical component box (92) .