Outdoor unit for air conditioner

Abstract

To provide an outdoor unit for an air conditioner capable of regulating movement of a power line and preventing the power line from coming contact with a member susceptible to thermal damage even when a long distance between an electric component box and a terminal part causes elongation of the power line.SOLUTION: A compressor 16, a noise reduction member 25 that reduces noise caused by driving of the compressor, an electric component box 21 for supplying driving electric power to the compressor and a power line 22 that connects the electric component box and a terminal part 20 provided in the compressor are provided in a casing 2. The noise reduction member is located at a position corresponding to the compressor, and includes regulation parts 31, 32 to which the power line is inserted to regulate movement of the power line.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an outdoor unit of an air conditioner. [Background technology]

[0002] An air conditioner generally consists of an indoor unit installed indoors and an outdoor unit installed outdoors, and regulates the temperature and humidity inside the room by circulating a refrigerant through a refrigerant circuit formed by connecting the indoor unit and the outdoor unit with refrigerant piping. The outdoor unit's machine room contains a compressor connected to the refrigerant circuit to circulate the refrigerant, sound-absorbing material wrapped around the compressor to reduce compressor noise, an electrical equipment box located above the compressor, and a reactor located between the electrical equipment box and the compressor. The compressor is provided with a terminal unit, and a power line is connected to the terminal unit from a power board stored in the electrical equipment box to supply driving power to the compressor.

[0003] Incidentally, there is a known technology in which a horizontal cut is made in the sound-absorbing material wrapped around the outer periphery of the compressor, and the power line connected to the terminal portion is pulled out of the sound-absorbing material through the cut, thereby preventing the power line coating from being damaged when the power line is placed near a vibrating compressor and the compressor vibrates, causing the compressor to periodically hit the power line (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-199482 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the distance between the electrical equipment box and the terminal section is large and the power line is long, simply holding a portion of the power line drawn out from the terminal section with sound-absorbing material, as in Patent Document 1, is not enough to secure the power line, and the power line may come into contact with the reactor, for example. Because the reactor becomes very hot during operation, if the power line comes into contact with the reactor, the heat from the reactor may damage the coating of the power line.

[0006] The present invention has been made to solve such problems, and aims to provide an outdoor unit for an air conditioner that can regulate the movement of the power line and prevent the power line from coming into contact with components that may be damaged by heat, even when the power line becomes long due to the increase in the distance between the electrical equipment box and the terminal section. [Means for solving the problem]

[0007] One aspect of the invention has a housing that includes a compressor, a noise reduction member caused by the operation of the compressor, an electrical equipment box that supplies driving power to the compressor, and a power line that connects the electrical equipment box to a terminal portion provided on the compressor, and the noise reduction member is positioned corresponding to the compressor and has a regulating portion through which the power line is inserted to regulate the movement of the power line. [Effects of the Invention]

[0008] According to the outdoor unit of the air conditioner of the present invention, even if the distance between the electrical equipment box and the terminal section is large and the power line is long, the movement of the power line can be regulated to prevent the power line from coming into contact with components that may be damaged by heat. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing the appearance of an outdoor unit according to the present invention. [Figure 2] 1 is a cross-sectional view showing a main part of the interior of an outdoor unit according to the present invention in plan view. [Figure 3] FIG. 2 is a perspective view showing equipment in a machine room of the outdoor unit according to the present invention. [Figure 4]3A and 3B are diagrams showing the shape of a noise reduction member according to the present invention. [Figure 5] 1 is a perspective view showing a state in which a noise reduction member is arranged in a machine chamber of an outdoor unit according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same parts are designated by the same reference numerals. However, it should be noted that the drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each layer, etc., may differ from the actual ones. Therefore, specific thicknesses and dimensions should be determined with reference to the following description. Furthermore, it goes without saying that the drawings may include parts with different dimensional relationships and ratios.

[0011] Furthermore, the embodiments shown below are merely examples of devices and methods for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention does not limit the materials, shapes, structures, arrangements, etc. of the components to those described below. The technical idea of ​​the present invention can be modified in various ways within the technical scope defined by the claims. Note that each drawing except for Figure 4 shows the up-down direction when the outdoor unit according to the present invention is installed on an installation surface, the left-right direction when the outdoor unit is viewed from the front, and the front-rear direction when the side where the air outlets are provided is defined as the front.

[0012] FIG. 1 is a diagram showing the appearance of an outdoor unit 1 of an air conditioner, which is a type of refrigeration cycle device, and FIG. 2 is a diagram showing the internal structure of the outdoor unit 1. As shown in FIG. As shown in FIG. 1, the outdoor unit 1 has a box-shaped housing 2. The housing 2 has a base 3 (see FIG. 2) that forms the bottom surface of the housing 2, a front panel 4 that forms the front surface of the housing 2, a right panel 5 that forms the right side surface of the housing 2, a left panel 6 that forms the left side surface of the housing 2, a top panel 7 that forms the top surface of the housing 2, and a rear panel 8 that forms the rear surface of the housing 2. An air outlet 4a is provided in the front panel 4, and a fan guard 9 is attached to the air outlet 4a. An air inlet 8a is provided in the rear panel 8. The front panel 4 forms a part of the right side surface of the housing 2. The right panel 5 forms the right side surface of the housing 2 and a part of the right side of the rear surface of the housing 2.

[0013] As shown in FIG. 2 , the interior space of the housing 2 is divided by a partition plate 10 into a machine chamber 11 and a heat exchange chamber 12. The heat exchange chamber 12 contains a blower fan 13, a fan motor 14, a heat exchanger 15, and other components. The machine chamber 11 contains devices such as a compressor 16, an accumulator 17, and an expansion valve 18. Reference numeral 19 denotes a discharge pipe through which a high-temperature, high-pressure refrigerant discharged from the compressor 16 flows. Refrigerant piping connects the devices in the machine chamber 11 to the heat exchanger 15 in the heat exchange chamber 12. Sheet-shaped noise reduction members 25 are disposed on the inner wall of the front panel 4 at a location located on the front side of the machine chamber 11 and along the inner wall of the right panel 5. In this embodiment, the noise reduction members 25 are disposed along the inner walls of the front and right side surfaces of the machine chamber 11. However, a noise reduction member may also be disposed by wrapping around the compressor 16.

[0014] 3 is a view showing the machinery compartment 11 with the front panel 4, right panel 5, top panel 7, and noise reduction member 25 removed. A terminal unit 20 is provided at the upper end of the compressor 16. As shown in FIG. 2, the terminal unit 20 and the discharge pipe 19 are disposed adjacent to each other on the front side of the machinery compartment 11. An electrical equipment unit 21 is disposed above the machinery compartment 11. The electrical equipment box described in the present invention corresponds to the electrical equipment unit 21. A power board (not shown) is mounted on the electrical unit 21, and the power board is connected to the terminal section 20 of the compressor 16 by a plurality of power lines 22. In addition, a reactor 23 for improving the power factor and removing harmonic components contained in the commercial power supply is disposed above the compressor 16 and on the front side of the machine room 11. The reactor 23 is fixed to the partition plate 10 and is connected by electric wires to a control board (not shown) housed in the electrical unit 21 and on which the above-mentioned inverter circuit is mounted.

[0015] As described above, the noise reduction member 25 is disposed along the inner wall of the portion of the front panel 4 that is located in front of the machine compartment 11 and along the inner wall of the right panel 5. In this embodiment, the noise reduction member 25 is composed of a sound-insulating sheet and a pair of sound-absorbing sheets that sandwich the sound-insulating sheet in a laminated structure. The sound-insulating sheet is formed of a high-density material such as rubber or PVC sheet, and insulates low-frequency components of noise caused by the operation of the compressor 16. The sound-absorbing sheet is formed of a material with a lower density than the sound-insulating sheet, such as felt, and absorbs high-frequency components of noise caused by the operation of the compressor 16. Note that the noise reduction member 25 is not limited to the materials and structure described above, as long as it can reduce noise caused by the operation of the compressor 16.

[0016] As shown in Fig. 4, the noise reduction member 25 has a substantially rectangular sheet shape. One short side end face of the noise reduction member 25 is referred to as a first end face 26, one long side end face extending in the longitudinal direction and intersecting with the first end face 26 is referred to as a second end face 27, the other short side end face opposing the first end face 26 is referred to as a third end face 28, and the other long side end face opposing the second end face 27 is referred to as a fourth end face 29. The position where the first end face 26 and the second end face 27 intersect is referred to as an end face intersection position 30.

[0017] Noise reduction member 25 has a first slit 31 formed linearly at a position close to end face intersection position 30 of first end face 26, cutting approximately perpendicular to first end face 26. Also, a second slit 32 formed approximately in the center of second end face 27, cutting approximately perpendicular to second end face 27 and then cutting toward first end face 26, forming a substantially L-shape. In FIG. 4 , the cut of second slit 32 cutting approximately perpendicular to second end face 27 is designated as first cut portion 33, and the cut cutting approximately perpendicular to first cut portion 33 in a direction from the end point of first cut portion 33 toward first end face 26 is designated as second cut portion 34. At the end of the first slit 31, a first retaining hole 35 is formed, the diameter of which is slightly smaller than the external dimensions of the bundled power supply wires 22 that connect the power board of the electrical unit 21 and the terminal portion 20 of the compressor 16. Also, at the end of the second cutout portion 34 of the second slit 32, a second retaining hole 36 is formed, the diameter of which is the same as that of the first retaining hole 35.

[0018] 3, the power supply wire 22 is arranged in a state of hanging down from the power board of the electrical unit 21 in the machine room 11 to the terminal part 20 of the compressor 16. The reactor 23 arranged in the machine room 11 becomes hot when the outdoor unit 1 is operating, so if the power supply wire 22 comes into contact with the reactor 23, the coating of the power supply wire 22 may be thermally damaged by the reactor 23 (part of the coating may melt due to heat). In addition, vibrations of the compressor 16 are transmitted to the discharge pipe 19 arranged near the terminal part 20 of the compressor 16 when the outdoor unit 1 is operating. Therefore, when the discharge pipe 19 and the power supply wire 22 are close to each other, the discharge pipe 19 may vibrate and hit the power supply wire 22, causing mechanical damage to the coating of the power supply wire 22 (the coating is damaged due to friction each time the discharge pipe 19 hits the coating). Therefore, the noise reduction member 25 of this embodiment is configured to hold the power line 22 with two slits so that the power line 22 does not come into contact with the reactor 23 and the discharge pipe 19.

[0019] 5 , the noise reduction member 25 is arranged to surround all of the equipment in the machine chamber 11, with the second end face 27 being the upper end face, the first end face 26 being located on the front side of the machine chamber 11, the third end face 28 being located on the rear side of the machine chamber 11, and the fourth end face 29 being the lower end face that contacts the base 3. When the noise reduction member 25 is arranged in the machine chamber 11 in this manner, the first retaining hole 35 is located on the front side of the machine chamber 11, and the second retaining hole 36 is located on the right side of the machine chamber 11. Note that the one surface of the noise reduction member 25 that faces the equipment in the machine chamber 11 is referred to as the inner surface 25a of the noise reduction member 25, and the other surface of the noise reduction member 25 that does not face the equipment in the machine chamber 11 is referred to as the outer surface 25b of the noise reduction member 25.

[0020] One end of the power supply wire 22 connected to the terminal portion 20 of the compressor 16 passes through the first slit 31 of the noise reduction member 25 and is drawn out to the outer surface 25a of the noise reduction member 25. At this time, the power supply wire 22 is fitted into the first retaining hole 35 along the first slit 31. As described above, the diameter of the first retaining hole 35 is slightly smaller than the outer dimension of the power supply wires 22 when bundled, so when the power supply wires 22 are fitted into the first retaining hole 35, they are held in a tightened state by the first retaining hole 35.

[0021] The power wires 22 drawn from the first retaining holes 35 to the outer surface 25b of the noise reduction member 25 are routed along the outer surface 25a of the noise reduction member 25 to the second slits 32. The power wires 22 then pass through the first notches 33 extending in the up-down direction of the second slits 32 and the second notches 34 extending in the left-right direction, and are drawn into the inner surface 25a of the noise reduction member 25. At this time, the power wires 22 are fitted into the second retaining holes 36 along the second slits 32. As described above, the diameter of the second retaining holes 36 is slightly smaller than the outer dimensions of the power wires 22 when bundled. Therefore, when the power wires 22 are fitted into the second retaining holes 36, they are held in a tightened state by the second retaining holes 36. The power line 22 drawn out from the second retaining hole 36 to the inner surface 25a of the noise reduction member 25 is routed from the right side surface of the machine chamber 11 toward the electrical unit 21 located above.

[0022] According to the above configuration, the power line 22 is drawn from one end of the power line 22 connected to the terminal portion 20 to the outer surface 25b of the noise reducing member 25 through the first slit 31, drawn from the right side surface of the machine chamber 11 to the inner surface 25a of the noise reducing member 25 through the second slit 32, and then routed to a position above the machine chamber 11. In other words, the power line 22 is routed and held by the first slit 31 and the second slit 32 of the noise reducing member 25 in a direction away from the reactor 23. This prevents the reactor 23 and the power line 22 from coming into contact with each other, thereby preventing the power line 22 from being thermally damaged.

[0023] Furthermore, the power supply wire 22 is routed along the outer surface 25b of the noise reduction member 25 between the first retaining hole 35 and the second retaining hole 36 of the noise reduction member 25. As shown in FIG. 5, the discharge pipe 19 is arranged on the inner surface 25a of the noise reduction member 25 (indicated by a dashed line in FIG. 5). In this embodiment, the first slit 31 and the second slit 32 are provided in the noise reduction member 25 so that the discharge pipe 19 is located on the inner surface 25a of the noise reduction member 25 between the first slit 31 and the second slit 32 when viewed from the front right side of the noise reduction member 25. Specifically, with the noise reduction member 25 arranged so as to cover the discharge pipe 19 from the front side to the right side of the outdoor unit 1, the first slit 31 and the first retaining hole 35 are formed in the portion of the noise reduction member 25 arranged on the front side, and the second slit 32 and the second retaining hole 36 are formed in the portion of the noise reduction member 25 arranged on the right side. By forming each slit and retaining hole in this manner, the power supply wire 22 that is inserted into the first slit 31 and pulled out from the first retaining hole 35 to the outer surface 25b can be routed along the outer surface 25b of the noise reduction member 25, inserted into the second slit 36 ​​and pulled out from the second retaining hole 36 to the inner surface 25a.Therefore, when the power supply wire 22 is routed inside the machine room 11, the noise reduction member 25 is interposed between the discharge pipe 19 and the power supply wire 22, preventing damage to the power supply wire 22.Even if the discharge pipe 19 vibrates, the discharge pipe 19 will not come into direct contact with the power supply wire 22 (the intervening noise reduction member 25 will come into contact with the power supply 22), and therefore the power supply wire 22 can be prevented from suffering mechanical damage caused by the vibration of the discharge pipe 19.

[0024] Therefore, in this embodiment, even if the distance between the electrical unit 21 and the terminal portion 20 is large and the power line 22 is long, the movement of the power line 22 is regulated by the two slits in the noise reduction member 25, thereby reliably preventing damage to the power line 22. Furthermore, the diameter of each of the first retaining hole 35 provided at the end point of the first slit 31 and the second retaining hole 36 provided at the end point of the second slit 32 is slightly smaller than the external dimensions of the power wires 22 when bundled, so that the power wires 22 can be held by the first retaining hole 35 or the second retaining hole 36 and prevented from slipping out of the first retaining hole 35 or the second retaining hole 36.

[0025] Furthermore, the second slit 32 has a first notch 33 extending in the vertical direction and a second notch 34 extending in the horizontal direction, so that even if the power line 22 comes out of the second retaining hole 36, the power line 22 will not easily come out of the second slit 32. Furthermore, by providing two slits, not limited to the first and second slits 31, 32, on two different end faces of the noise reduction member 25, the power line 22 is less likely to come out of each slit, and even if a force acts to cause the power line 22 to come out of one slit, the other slit can restrict the movement of the power line. [Explanation of symbols]

[0026] 1 Outdoor unit 2. Case 3. Bass 4 Front Panel 4a Air outlet 5 Right Panel 6 Left Panel 7. Top plate 8 Rear panel 8a Intake port 9 Fan Guard 10 Divider 11 Machine room 12 Heat exchange room 13 Blower fan 14 Fan motor 15 Heat exchanger 16 Compressor 17 Accumulator 18 Expansion valve 19 Discharge pipe 20 Terminal Section 21 Electrical unit 22 Power line 23 Reactor 25 Noise reduction materials 25a Inner surface of noise reduction member 25b Outer surface of noise reduction member 26 1st end face 27 Second end face 28 Third end face 29 4th end face 30 End face intersection position 31 First slit 32 Second slit 33 First notch 34 Second notch 35 1st holding hole 36 2nd holding hole

Claims

1. The housing includes a compressor, a noise reduction member that reduces noise caused by driving the compressor, an electrical equipment box that supplies driving power to the compressor, and a power line that connects the electrical equipment box to a terminal portion provided on the compressor, An outdoor unit for an air conditioner, characterized in that the noise reduction member is arranged at a position corresponding to the compressor and has a regulating portion through which the power line is inserted to regulate the movement of the power line.

2. 2. The outdoor unit of an air conditioner according to claim 1, wherein the restriction portion is two slits cut from two different end faces of the noise reduction member toward the interior of the noise reduction member.

3. 3. The outdoor unit of an air conditioner according to claim 2, wherein the power supply line is drawn from the terminal portion through one of the two slits to the outside of the noise reduction member, and then drawn from the outside to the inside of the noise reduction member through the other of the two slits.

4. 4. The outdoor unit of an air conditioner according to claim 2, wherein the two slits are formed by cutting inward from two mutually intersecting end faces of the noise reduction member.

5. An outdoor unit for an air conditioner as described in claim 2 or 3, characterized in that one of the two slits has a first cut portion cut approximately perpendicular to the end face on which the slit is formed, and a second cut portion cut continuously from the first cut portion, approximately perpendicular to the first cut portion, and toward the other of the two slits.

6. 4. The outdoor unit of an air conditioner according to claim 2, wherein a retaining hole having a size corresponding to an outer size of the power line is formed at the end of each of the two slits.

7. 4. The outdoor unit of an air conditioner according to claim 2, wherein a refrigerant pipe is connected to the compressor, and the refrigerant pipe is arranged between the end points of the two slits.

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