JP2011007371A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of inhibiting chattering noise by fixing a support plate to a side plate via projections at a part where vibration is small.SOLUTION: In the air conditioner, the interior of a casing 11 of the outdoor unit 10 is divided into a heat exchange chamber and a machine chamber B by a partition plate. A heat exchanger and a blower are received in the heat exchange chamber and a compressor is received in the machine chamber B. Service valves 37, 38 for a liquid pipe 39 and a gas pipe 40 connected with the compressor are supported to the support plate 36 provided in a standing manner on a bottom plate 21 of the casing 11. A side plate 24 of the casing 11 is applied to the support plate 36 and screw-fastened. The projections 45, 46 are formed around a screw-fastening part of the support plate 36 or the side plate 24, and the support plate 36 and the side plate 24 are contacted via the projections 45, 46.

Description

  The present invention relates to an air conditioner in which a liquid pipe and a gas pipe service valve are supported by a support plate fixed to a bottom plate of a casing of an outdoor unit.

Conventionally, a housing of an outdoor unit is divided into a heat exchange chamber and a machine room by a partition plate, a heat exchanger and a blower are housed in the heat exchange room, a compressor is housed in the machine room, and a liquid connected to the compressor Air conditioners with service valves for pipes and gas pipes are known. In this type, the side plate of the housing is directed to the support plate that stands on the bottom plate of the housing and supports the service valve, and is screwed (for example, see Patent Document 1).
Japanese Patent Publication No. 6-58180

However, in the above-described conventional configuration, the support plate and the side plate are in contact with each other over a wide range, so that a minute gap is formed between the support plate and the side plate at a portion far from the screw fastening portion. Therefore, when the vibration of the compressor is transmitted to the support plate via the liquid pipe and the gas pipe, the support plate and the side plate repeatedly collide, and so-called chatter noise may occur.
Then, the objective of this invention is providing the air conditioner which eliminates the subject which the prior art mentioned above has, and suppresses chatter noise.

In order to solve the above-mentioned problems, the present invention divides the inside of an outdoor unit housing into a heat exchange chamber and a machine room by a partition plate, accommodates a heat exchanger and a blower in the heat exchange chamber, and compresses the machine room. The service valve for the liquid pipe and gas pipe connected to the compressor is supported on a support plate standing on the bottom plate of the casing, and the side plate of the casing is assigned to the support plate and screwed. In the air conditioner, a protrusion is provided around the screw fastening portion of the support plate or the side plate, and the support plate and the side plate are brought into contact with each other by the protrusion.
According to the above configuration, since the projection is provided around the screw fastening portion of the support plate or the side plate, and the support plate and the side plate are brought into contact with each other by the projection, the support plate and the side plate are contacted only by the projection. It is possible to prevent a gap from being formed between the side plate and the chatter noise.

In the above configuration, the protrusion may be formed in proximity to the service valve.
According to the above configuration, since the protrusion is formed in the vicinity of the service valve, the support plate is fixed to the side plate at a portion where vibration is small, so that chatter noise can be further suppressed.

The said structure WHEREIN: The said protrusion may be arrange | positioned substantially diagonally in the substantially upper half of the said support plate.
According to the above configuration, since the protrusions are disposed substantially diagonally in the upper half of the support plate, the support plate and the side plate can be stably fixed with a small number of screw fastening portions, thereby reducing the number of parts and manufacturing. The process can be simplified.

In the above configuration, the protrusion may be formed on the side plate by seat pressing.
According to the above configuration, since the protrusion is formed on the side plate by seat pressing, it is not necessary to provide the protrusion separately, so that the number of parts can be reduced and the manufacturing process can be simplified.

  According to the present invention, since the projection is provided around the screw fastening portion of the support plate or the side plate, and the support plate and the side plate are brought into contact with each other by the projection, the support plate and the side plate are contacted only by the projection. It is possible to prevent a gap from being formed between the side plate and the chatter noise.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Drawing 1 is a figure showing the outdoor unit of the air harmony machine concerning an embodiment of the invention.
In FIG. 1, reference numeral 10 denotes an outdoor unit of an air conditioner. The outdoor unit 10 is installed outside and includes a substantially rectangular parallelepiped box-shaped casing 11.
The outdoor unit 10 is an apparatus that constitutes an air conditioner in combination with an indoor unit (not shown). The outdoor unit 10 is connected to the indoor unit through a refrigerant pipe to form a refrigeration cycle circuit, and the refrigerant flows through the refrigeration cycle circuit. Thus, heat exchange with the outdoor air enables indoor air conditioning such as cooling and heating.
Note that the directions such as up and down and left and right described below indicate directions when viewed from the front side of the outdoor unit 10 in a state where the outdoor unit 10 is installed.

FIG. 2 is an exploded perspective view showing the internal configuration of the outdoor unit 10.
In the outdoor unit 10, a partition plate 22 made of steel plate is also erected on a bottom plate 21 made of steel plate constituting a part of the housing 11, and the inside of the housing 11 is connected to the heat exchange chamber A by this partition plate 22. It is partitioned into a machine room B. The partition plate 22 is fixed to the bottom plate 21 with a fastening member such as a screw.
In the heat exchange chamber A, an outdoor heat exchanger 12 having an L shape in a top view and a constant vertical width is disposed along the short side 21L1 on one side (left side) and the long side 21L2 on the back side of the bottom plate 21. Is done.
In addition, an outdoor blower 14 is disposed on the front side of the outdoor heat exchanger 12 in the heat exchange chamber A via a motor support base 13. The motor support 13 extends vertically on the front side of the outdoor heat exchanger 12 and supports the motor of the outdoor blower 14 at a substantially central position in the vertical direction. The motor support 13 has plate-like flange portions 13A and 13B at the upper and lower ends thereof, and is fixed to the housing 11 via the flange portions 13A and 13B.

An electrical unit (not shown) that houses a control board for controlling the air conditioner is disposed on the upper part of the partition plate 22. The electrical unit is disposed so as to straddle the heat exchange chamber A and the machine room B in the housing 11. That is, the partition plate 22 is formed at a height lower than the upper surface of the outdoor heat exchanger 12, and the electrical unit is disposed on the upper surface of the outdoor heat exchanger 12 by disposing the electrical unit above the partition plate 22. It arrange | positions so that the heat exchange room A and the machine room B may be straddled within the area | region which fits in substantially the same height.
Thus, since the electrical unit spans the heat exchange chamber A and the machine room B, the electrical unit functions as a part of the partition plate 22 that partitions the heat exchange chamber A and the machine room B, and the electrical unit has a large format. An electrical board can be accommodated. Further, by providing a heat sink on the heat exchange chamber A side in the electrical unit, heat from the electrical board or the like can be efficiently released to the outside using the air blown by the outdoor blower 14.

The casing 11 of the outdoor unit 10 includes a single bottom plate 21 constituting the floor member of the heat exchange chamber A and the machine room B, a left side plate 23 made of a steel plate covering the left side of the heat exchange chamber A, and the machine room B. A steel plate left side plate (side plate) 24 that covers the right side, a steel plate front plate 25 that covers the front surfaces of the heat exchange chamber A and the machine room B, and a steel plate ceiling that covers the top of the heat exchange chamber A and the machine room B. Plate 26. In FIG. 2, reference numeral 11 </ b> A is a pedestal that supports the bottom plate 21 from below.
The cover parts 21, 23 to 26 constituting the housing 11 are connected to each other by fastening members such as screws. More specifically, the bottom plate 21 includes a bottom plate portion 21A formed in a substantially horizontal plate shape, and a rising edge (the bottom plate 21 of the bottom plate 21) bent upward from the outer peripheral edge (four sides 21L1 to 21L4) of the bottom plate portion 21A. 21B, and the rising edge 21B extends along the four sides 21L1 to 21L4 of the bottom plate portion 21A and overlaps the left and right side plates 23, 24 and the front plate 25, and a female screw hole is formed in the overlapping portion. The left and right side plates 23, 24 and the front plate 25 are connected to each other by fastening screws (not shown) from the outside of the left and right side plates 23, 24 and the front plate 25 to the respective female screw holes.
Also, with respect to the other cover parts 23 to 26 other than the bottom plate 21, a female screw hole is provided in the inner part of the overlapping portion that overlaps with the other adjacent cover parts 23 to 26, and a male screw (not shown) is provided from the outside in the overlapped state. The cover parts 23 to 26 are connected to each other by being fastened.

There is no cover part on the back side of the heat exchange chamber A in the housing 11, and the outdoor heat exchanger 12 disposed on the bottom plate 21 is exposed to the outside.
The left side plate 23 on the heat exchange chamber A side is provided with a large number of openings (not shown) over substantially the entire surface, and the side of the outdoor heat exchanger 12 located inside the left side plate 23 is While being covered with the left side plate 23, heat exchange is possible with the outside air flowing inside and outside through the opening.
The right side plate 24 on the machine room B side is formed in an L shape in a top view integrally including a side cover part 24A that covers the side face of the machine room B and a back cover part 24B that covers the back surface of the machine room B. ing. The back cover portion 24B extends from the back side to a position that covers the end portion on the machine room B side of the outdoor heat exchanger 12 arranged on the bottom plate 21 (one end portion on the refrigerant in / out side) from the back side, The outdoor heat exchanger 12 is connected via a tube plate 15 fixed to one end 12R of the heat exchanger 12.

The side surface covering portion 24A includes a pair of upper and lower openings 24A1 and 24A2, and these openings 24A1 and 24A2 are covered with a cover plate 27 having a handle portion 27A.
Here, the upper opening 24A1 is an opening for exposing a connector portion provided in the electrical unit and connecting the wiring from the outside (indoor unit or external power source) to the connector. The cover plate 27 having the handle portion 27A is passed through. Further, the lower opening 24A2 is an opening for exposing a pipe connection part to the refrigerant pipe in the machine room B and connecting the refrigerant pipe to the indoor unit. The left side plate 23 facing the right side plate 24 is also provided with a handle.

  The front plate 25 has an opening formed on the front surface of the outdoor fan 14, and the opening is covered with a grill 11 </ b> B that prevents the outdoor fan 14 from contacting a human body or the like. When the outdoor blower 14 is rotationally driven by the motor, outside air is sucked into the heat exchange chamber A from the periphery of the outdoor unit 10, more specifically, from the back side and the left side of the outdoor heat exchanger 12, and the outdoor heat After passing through the substantially front surface of the exchanger 12, it is discharged outside through the grill 11 </ b> B on the front surface of the heat exchange chamber A. That is, the outdoor unit 10 is configured as a front blowing type that blows out air after heat exchange from the front surface.

  Refrigerating circuit components such as a compressor 31, an accumulator 32, and a valve body such as a four-way valve 33 and an expansion valve 34 that constitute a part of the refrigeration cycle circuit are connected to the machine room B by piping. Contained in the space. A soundproof material 35 for suppressing noise generated by the compressor 31 is attached to the compressor 31 so as to surround the compressor 31. A support plate 36 is disposed at a substantially intermediate position in the front-rear direction on the side surface side of the machine room B, and a liquid pipe service valve 37 and a gas pipe service valve 38 are fixed to the support plate 36. The liquid pipe service valve 37 and the gas pipe service valve 38 are connected with a liquid pipe 39 and a gas pipe 40 of a refrigerant pipe connected to the compressor 31, and a gas pipe and a liquid pipe of a refrigerant pipe extending from the indoor unit, respectively. Thus, a refrigeration cycle circuit for circulating the refrigerant is configured.

3 is a right side view showing the outdoor unit 10 of FIG. 2, and FIG. 4 is a view showing a state in which the right side plate 24 is attached to the outdoor unit 10 of FIG. FIG. 5 is a cross-sectional view showing the outdoor unit 10 of FIG. 4 from above.
As shown in FIG. 3, the support plate 36 includes a plate portion 36A made of a steel plate, and a claw portion that engages the rising edge 21B of the bottom plate 21 and positions the plate portion 36A in the vertical direction at the lower portion of the plate portion 36A. 36B is formed. A lower portion of the plate portion 36A positioned by the claw portion 36B is fixed to the rising edge 21B by a pair of screws 41. In the lower part of the plate part 36 </ b> A, a recess 36 </ b> C that is recessed toward the machine room B is formed between the pair of screws 41, so that the rigidity (strength) of the screws 41 with respect to fastening is improved. The rising edge 21 </ b> B is formed with a protruding portion 21 </ b> C protruding outward between the pair of screws 41 so that the rigidity (strength) of the screws 41 with respect to fastening is improved.

A raised portion 36D protruding outward is formed on the upper portion of the recessed portion 36C. For example, the raised portion 36D is formed in a shape (rounded rectangular shape) in which a rectangle is chamfered and a short side thereof is formed in a semicircular shape in a side view.
The plate portion 36A is formed with a pair of upper and lower cut portions 36E that are cut out from a substantially central portion in the front-rear direction of the raised portion 36D to the rear end portion of the plate portion 36A. A liquid pipe 39 connected to the liquid pipe service valve 37 is inserted into the upper notch 36E, and a bifurcated attachment part 37A of the liquid pipe service valve 37 is fixed to the flat part of the raised part 36D by a pair of bolts 42. Is done. Further, the gas pipe 40 connected to the gas pipe service valve 38 is inserted into the lower notch 36E, and the bifurcated attachment part 37A of the gas pipe service valve 38 is flattened by the pair of bolts 42. Fixed to the part.

In each service valve 37, 38, a liquid pipe connection nut 37 </ b> B connected to the liquid pipe of the indoor unit and a gas pipe connection nut 38 </ b> B connected to the gas pipe of the indoor unit are located on the rear side of the outdoor unit 10. Are arranged as follows. For this reason, the liquid pipe and the gas pipe of the indoor unit connected to the liquid pipe connecting nut 37 </ b> B and the gas pipe connecting nut 38 </ b> B are arranged toward the rear of the outdoor unit 10.
Further, the liquid pipe service valve 37 is arranged so that the liquid pipe connection nut 37B faces slightly downward. For this reason, the liquid pipe of the indoor unit extending from the connection nut 37B for liquid pipes and the gas pipe of the indoor unit extending from the connection nut 38B for gas pipes can be combined into one. In FIG. 3, reference numeral 38 </ b> C is an access unit used when measuring gas pressure, filling gas, and the like.

In order to fix the support plate 36 and the right side plate 24 (see FIG. 4), the support plate 36 includes fixing portions 43 and 44 extending in the plane direction from the plate portion 36A. These fixing portions 43 and 44 are disposed substantially diagonally in the substantially upper half of the support plate 36. More specifically, the fixing portion 43 is formed at the upper rear side of the raised portion 36D, and the fixing portion 44 is located in front of the raised portion 36D and between the liquid pipe service valve 37 and the gas pipe service valve 38. Is formed. Protruding holes (burring holes) 43A and 44A are formed in the fixing portions 43 and 44, respectively.
As described above, the fixing portions 43 and 44 for fixing the support plate 36 and the right side plate 24 are formed so as to extend from the raised portion 36D in the plane direction of the plate portion 36A, and thus the plate portion 36A around the raised portion 36D. And the material of the support plate 36 can be reduced. Further, since the fixed portion 43 is provided in a space formed above and above the raised portion 36D by forming the raised portion 36D into a chamfered shape, the outer shape of the support plate 36 can be further reduced, and the material of the support plate 36 can be reduced. .

  As shown in FIG. 4, the upper portion of the opening 24A2 of the right side plate 24 is formed along the shape of the raised portion 36D, and the lower portion is formed wider than the upper portion so as to avoid the claw portion 36B of the support plate 36. . On the rear side of the opening 24A2, a cutout cover 24A3 that covers the cutout 36E of the support plate 36 is formed integrally with the side cover 24A. When the right side plate 24 is fixed to the support plate 36, the cutout cover portion 24A3 is configured to abut against the rear end portion of the raised portion 36D and position the right side plate 24 in the front-rear direction.

Projections 45 and 46 projecting inward (machine room B side) are formed on the side surface covering portion 24A at positions corresponding to the fixing portions 43 and 44 of the support plate 36, respectively. That is, the protrusions 45 and 46 are disposed in proximity to the service valves 37 and 38. These protrusions 45 and 46 are formed by press-fitting by pressing. Through holes 45A and 46A (see FIG. 2) are formed in the protrusions 45 and 46, respectively. In other words, the protrusions 45 and 46 are formed only at the peripheral portions of the through holes 45A and 46A, and in the present embodiment, the protrusions 45 and 46 are formed to a size that allows the seating surface of the screw 47 to be disposed. The support plate 36 and the right side plate 24 are fixed by aligning the through holes 45A and 46A with the projecting holes 43A and 44A of the support plate 36 and fastening the screws 47.
The protruding hole 43A of the support plate 36 and the through hole 45A of the right side plate 24 constitute one screw fastening portion, and the protruding hole 44A of the support plate 36 and the through hole 46A of the right side plate 24 constitute another screw fastening portion. is doing.

In the outdoor unit 10 configured as described above, when the compressor 31 is operated, the vibration of the compressor 31 is transmitted to the support plate 36 via the liquid pipe 39 and the gas pipe 40 and the service valves 37 and 38. . In the present embodiment, as shown in FIG. 5, since the support plate 36 and the right side plate 24 are in contact with each other only by the protrusions 45 and 46, the contact area between the support plate 36 and the right side plate 24 is reduced. A gap is prevented from being formed between 36 and the right side plate 24, and as a result, chatter noise is suppressed.
In the support plate 36, the vibration increases as the distance from the service valves 37 and 38, which are vibration sources, increases. In the present embodiment, since the protrusions 45 and 46 are formed close to the service valves 37 and 38, a small vibration portion of the support plate 36 is fixed to the right side plate 24, so that it is transmitted to the right side plate 24. Vibration is reduced, and as a result, chatter noise can be further suppressed.

Since the protrusions 45 and 46 are disposed substantially diagonally on the upper half of the support plate 36, the support plate 36 and the right side plate 24 are reduced in number (in this embodiment, two locations) with a screw fastening portion. Therefore, the number of parts can be reduced and the manufacturing process can be simplified.
Further, since the protrusions 45 and 46 are formed only at the peripheral portions of the through holes 45A and 46A, the contact area between the support plate 36 and the right side plate 24 can be further reduced, and chatter noise can be further suppressed.
Furthermore, since the protrusions 45 and 46 are integrally formed on the right side plate 24 by press-fitting by pressing, it is not necessary to provide a protrusion separately, so that the number of parts can be reduced and the manufacturing process can be simplified.
In addition to this, the protrusions 45 and 46 are a liquid pipe connection nut 37B for connecting the liquid pipe of the indoor unit, a gas pipe connection nut 38B for connecting the gas pipe of the indoor unit, and an access part 38C of the gas pipe service valve 38. Therefore, the screw 47 can be easily fastened.

  As described above, according to the present embodiment, the projections 45 and 46 are provided around the screw fastening portion of the right side plate 24, and the support plate 36 and the right side plate 24 are brought into contact with each other by the projections 45 and 46. Since the support plate 36 and the right side plate 24 are in contact with each other only by the protrusions 45 and 46, it is possible to prevent a gap from being formed between the support plate 36 and the right side plate 24 and to suppress chatter noise.

  Further, according to the present embodiment, since the protrusions 45 and 46 are formed close to the service valves 37 and 38, the support plate 36 is fixed to the right side plate 24 at a portion where vibration is small, so Can be further suppressed.

  Further, according to the present embodiment, since the protrusions 45 and 46 are disposed substantially diagonally on the upper half of the support plate 36, the support plate 36 and the right side plate 24 can be stably connected with a small number of screw fastening portions. Since it can be fixed, the number of parts can be reduced and the manufacturing process can be simplified.

  Furthermore, according to the present embodiment, since the protrusions 45 and 46 are formed on the right side plate 24 by seat pressing, it is not necessary to provide the protrusion separately, so that the number of parts can be reduced and the manufacturing process can be simplified. .

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in the above-described embodiment, the protrusions 45 and 46 are provided on the right side plate 24 side, but may be provided on the support plate 36 side.
Moreover, in the said embodiment, although protrusion 45,46 was provided over the whole peripheral part of through-hole 45A, 46A, you may be provided in a part.

In the above embodiment, the support plate 36 is fixed to the side surface covering portion 24A of the right side plate 24. However, the present invention is not limited to this, and the support plate 36 may be the back surface covering portion 24B of the right side plate 24 or the machine. The front plate 25 that covers the front surface of the chamber B may be fixed.
In the above embodiment, the two protrusions 45 and 46 are formed on the right side plate 24. However, one protrusion may be formed, or two or more protrusions may be formed.

  Further, the upper protrusion 45 is formed on the rear portion of the support plate 36, and the protrusion 46 in the middle in the vertical direction is formed on the front portion of the support plate 36. The upper protrusion 45 is formed on the front portion of the support plate 36, A substantially intermediate protrusion 46 in the vertical direction may be formed on the rear portion of the support plate 36. In this case, in order to avoid the liquid pipe and gas pipe of the indoor unit, the protrusion 46 in the middle in the vertical direction is not between the liquid pipe service valve 37 and the gas pipe service valve 38 but on the lower gas pipe service valve 38. It is desirable to provide it below.

It is a figure which shows the outdoor unit of the air conditioner which concerns on embodiment of this invention. It is a disassembled perspective view which shows the internal structure of an outdoor unit. It is a right view which shows the outdoor unit of FIG. It is a figure which shows the state which attached the right side board to the outdoor unit of FIG. It is sectional drawing which shows the outdoor unit of FIG. 4 from upper direction.

DESCRIPTION OF SYMBOLS 10 Outdoor unit 11 Case 12 Outdoor heat exchanger 14 Outdoor fan 21 Bottom plate 22 Partition plate 24 Right side plate 31 Compressor 36 Support plate 37 Liquid pipe service valve 38 Gas pipe service valve 39 Liquid pipe 40 Gas pipe 43A, 44A Screw fastening part)
45, 46 Protrusion 45A, 46A Through hole (screw fastening part)
A Heat exchange room B Machine room

Claims (4)

The inside of the casing of the outdoor unit is divided into a heat exchange chamber and a machine room by a partition plate, a heat exchanger and a blower are housed in the heat exchange chamber, a compressor is housed in the machine room, and a liquid connected to the compressor In an air conditioner in which a service valve for a pipe and a gas pipe is supported on a support plate standing on the bottom plate of the casing, and the side plate of the casing is addressed to the support plate and screwed.
A protrusion is provided around the screw fastening portion of the support plate or the side plate, and the support plate and the side plate are brought into contact with each other by the protrusion.   The air conditioner according to claim 1, wherein the protrusion is formed in proximity to the service valve.   3. The air conditioner according to claim 1, wherein the protrusions are disposed substantially diagonally on substantially the upper half of the support plate.   The air conditioner according to any one of claims 1 to 3, wherein the protrusion is formed on the side plate by seat pressing.

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