JP4229196B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to a configuration of an outdoor unit of an air conditioner that can reduce costs.

Conventional Example 1
2. Description of the Related Art Conventionally, an outdoor unit casing of an air conditioner is known in which the other five surfaces except the bottom surface are constituted by five panels, or the front and side panels are formed in a U shape.

Conventional example 2
In addition, in order to reduce the number of parts, the handle of the outdoor unit has a configuration in which the upper part of the side panel that enters the inside of the top panel is recessed toward the inside of the housing, and the handle itself is not required as a separate member. Known (Japanese Utility Model Publication No. 63-7724).

Conventional example 3
In the outdoor unit, there is an electrical component box in which electrical components are concentrated. In particular, it is necessary to ensure the heat dissipation of the power transistor, and a heat radiation fin or the like is used.

Conventional example 4
In general, a copper pipe or the like is used as a connection pipe for circulating a refrigerant used in an air conditioner, and processing such as cutting the copper pipe is performed in order to connect the copper pipes. At this time, there is a problem that scraps from the copper pipe are generated and mixed with the refrigerant in the pipe, and there is a problem of adhering to the compressor, the capillary tube and the like. It was provided. FIG. 15 is a partially cutaway side view showing the conventional strainer 100.

Conventional Example 5
A configuration for installing an outdoor unit on an inclined installation surface is known in which the lengths of the four legs that support the outdoor unit are aligned in advance in the front and rear in correspondence with the inclination (special feature). No. 2-267437).

Japanese Utility Model Publication No. 63-7724

  In the case of the conventional example 1, the number of parts is increased and the cost is increased when it is assembled by using each of the five panels, and in the case of the U-shape, the assembly is easy, but the workability during the maintenance inspection is increased. There was a problem that decreased.

  Moreover, in the thing of the prior art example 2, although the number of parts can be reduced, there existed a problem that the handle part recessed in the housing | casing reduced the exclusive volume inside an outdoor unit.

  In addition, the conventional example 3 requires insulation of the power transistor in the electrical box (measures against leakage current), and in the outdoor unit installed outdoors, there is a particular problem with insulation due to water intrusion. It was.

  In the conventional example 4, since the strainer was formed individually, there was a problem that the number of parts eventually increased.

  In the conventional example 5, the lengths of the four legs are determined in advance, so that it is difficult to cope with an appropriate length at the actual installation location. If prepared in advance, there is a problem that storage and management become complicated. In addition, it is difficult to use except for installation on an inclined surface.

  It is another object of the present invention to provide an air conditioner with a small number of parts without reducing the function of the strainer.

  To this end, in the invention according to claim 1, an outdoor unit of an air conditioner composed of a compressor, a heat exchanger, a fan, an electrical component box, and a bottom plate, a front panel, a side panel, and a top panel covering them. A partition plate that partitions a machine room including the compressor and a blower room including the heat exchanger and the fan, and the electrical component box is provided at an upper portion of the machine room, and the ceiling The edge that borders the face panel is provided with a handle formed by projecting the top panel itself to the outside of the outdoor unit, and the edge of the handle is rounded to form an arc. A flange portion that is in contact with the top panel near the handle is provided on an upper portion of the side panel on the side where the handle is provided.

  The invention according to claim 2 is characterized in that the handle is provided on a side of the electrical component box.

  According to a third aspect of the present invention, an electronic component having a heat radiating fin is attached to the wiring board housed in the electrical component box, and the heat radiating fin faces the blower chamber. .

  The invention according to claim 4 is characterized in that screws are provided on both sides of the handle to fix the edge of the top panel and the side panel.

  The invention according to claim 5 is characterized in that a downward notch is provided on the bottom surface side of the side panel.

  The invention according to claim 6 is characterized in that the height of the handle is equal to the height of the edge of the top panel.

  The invention according to claim 7 is characterized in that the handle is formed by press-molding a top panel.

  The present invention does not require a special member to form a handle to be hooked, and does not require the side panel 21 to be recessed inside the outdoor unit, and therefore does not reduce the exclusive volume of the outdoor unit. Further, since the edge 24 is rounded so that the curling 25 forms an arc, it can be easily gripped without damaging the hand.

Embodiment 1 FIG.
In this embodiment, a case of an outdoor unit will be described in particular.
FIG. 1 is an exploded perspective view of an outdoor unit. In FIG. 1, reference numeral 1 denotes a casing of the outdoor unit, which includes a front panel 2, a right side panel 3, a left side panel 4, a top panel 5, and a back panel 6. Inside, a compressor 8 installed on the bottom plate 7, a heat exchanger 9, and a blower (including a fan) 10 are provided. The partition plate 11 partitions the machine room 12 and the blower room 13. An electrical component box 14 in which electrical components according to each configuration are concentrated is installed in the upper part of the machine room 12.

  In FIG. 1, the front panel 2, the left and right side panels 4, 3 and the back panel 6 are formed by pressing one sheet metal, and the separate top panel 5 is screwed to the left and right side panels 4, 3. It is. Therefore, the housing 1 has a two-piece configuration. FIG. 2 is an enlarged view of the housing 1 extracted from FIG. 15, 16, and 17 are formed in a wavy shape at the corners of the housing so that the front panel 2 and the left and right side panels 4 and 3, and the right side panel 3 and the back panel 6 are positioned respectively. It is a wave-like part as a movable means to change. The number of the concave and convex portions of the wavy portions 15 to 17 is suitably 2 to 3, but may be appropriately set depending on the thickness and strength of the panel.

  According to the outdoor unit of an air conditioner having the above configuration, the number of parts is reduced when assembling each panel, and the number of seams between each panel is drastically reduced during use. In addition, when the outdoor unit is maintained and inspected, the corrugated portions 15 to 17 allow the casing to be easily folded without removing each panel itself, thereby facilitating maintenance and inspection. It becomes.

  FIG. 3 shows an example in which the housing 1 is composed of the top panel 5, the front panel 2, and the left and right side panels 4, 3 as one piece, and the back panel 6 is configured separately. Reference numeral 18 denotes a wave-like portion similar to the wave-like portions 15 to 17. Further, all the panels may be configured as one piece, and the housing 1 may be configured from one sheet metal.

Embodiment 2. FIG.
4 is a partially cutaway perspective view showing the outdoor unit of the air conditioner, in which 20 is a top panel of the outdoor unit, and is fitted to the side panel 21 and screwed. Reference numeral 22 denotes a handle, which is provided on each of the opposing short sides 23 of the rectangular top panel 20. The handle 22 is configured such that the short side 23 of the top panel 20 is press-molded and an edge 24 thereof protrudes outward of the outdoor unit. FIG. 5 is a partial cross-sectional view of the handle 22, and 25 is a curling formed so that the edge 24 enters the side panel 21, and all the portions of the edge 24 that protrude outward from the side panel are shown. It is formed across.

  According to the above configuration, no special member is required to form a handle to be hooked, and the side panel 21 does not need to be recessed to the inside of the outdoor unit. Therefore, the exclusive volume of the outdoor unit can be reduced. Absent. Further, since the edge 24 is rounded so that the curling 25 forms an arc, it can be easily gripped without damaging the hand.

Embodiment 3 FIG.
FIG. 6 is an exploded perspective view of an electrical component box installed in the outdoor unit of the air conditioner as shown in FIG. In the figure, an electrical component box 30 accommodates each electrical component, and has a notch 32 on a wall surface 31 constituting a part of the electrical component box 30. Reference numeral 33 denotes a wiring board, which includes a power transistor 34. The power transistor 34 is provided with aluminum radiating fins 35 for releasing the heat. The radiating fins 35 and the power transistor 34 are both screwed to the wiring board 33, and the radiating fins 35 are made of resin. It is made to fix to the notch 32 by the fixing tool 36. Accordingly, the wiring board 33, the heat radiation fins 35, and the power transistor 34 are fixed to the wall surface 31 of the electrical component box 30 by the fixture 36.

  The fixture 36 has a peripheral edge 37 that surrounds the outer periphery of the radiating fin 35, and is fixed by fitting the radiating fin 35 to the peripheral edge 37. The fixture further comprises engagement means 38 for engaging the edge 37 that borders the notch 32 in the wall 31. Although the thing of FIG. 6 is provided with the means to fit, the aspect of an engagement may be what. Therefore, it is realizable also by having a screw hole for screw engagement.

  In the outdoor unit having the electrical component box having the above configuration, the wiring substrate 32 is fixed to the wall surface 31 of the electrical component box 30 by the resin fixture 36, so that the insulation of the wiring substrate 32 is ensured. Even if the product box 30 is made of a conductive material, there is no problem, and a leakage current countermeasure can be taken. Furthermore, since the engagement means 38 is performed by fitting, it is difficult for water to easily enter the electrical component box 30 and insulation can be ensured.

Embodiment 4 FIG.
In this embodiment, an air conditioner that reduces the number of parts without providing a strainer alone will be described. First, the refrigerant circuit during heating of the air conditioner of FIG. The low-temperature and low-pressure gas refrigerant is compressed into a high-temperature and high-pressure gas refrigerant by the compressor 40 and led to the four-way valve 41. The high-temperature and high-pressure gas refrigerant is guided to the indoor heat exchanger 42, where the gas refrigerant is liquefied, and at this time, the condensation heat is released into the room. In this way, warm air is sent into the room for heating. Further, the liquefied high-pressure refrigerant is converted into a low-temperature and low-pressure gas-liquid two-phase refrigerant by the capillary tube 43 and led to the outdoor heat exchanger 44. Here, the refrigerant that has absorbed heat from the outdoor air evaporates into a low-temperature and low-pressure gas refrigerant. Thereafter, the refrigerant is sent to the compressor 40 through the four-way valve 41, and the heating circulation operation is performed.

  FIG. 8 shows a refrigerant circuit representing the operation during cooling by rotating the four-way valve 41 to change the flow path. The low-temperature and low-pressure gas refrigerant is compressed into a high-temperature and high-pressure gas refrigerant by the compressor 40 and led to the four-way valve 41. The high-temperature and high-pressure gas refrigerant is led to the outdoor heat exchanger 44, where the gas refrigerant is liquefied, and at this time, the condensation heat is released to the outside. The liquefied high-pressure refrigerant is converted into a low-temperature low-pressure gas-liquid two-phase refrigerant by the capillary tube 43 and led to the indoor heat exchanger 42. Here, heat is absorbed from the indoor air, and the refrigerant evaporates to become a low-temperature and low-pressure gas refrigerant. Cooling is performed by absorbing heat from room air. Thereafter, the refrigerant is sent to the compressor 40 through the four-way valve 41, and the refrigeration cycle operation is performed.

  7 and 8, 45 and 47 denote stop valves, which are provided in the outdoor unit. When the air conditioner is actually installed, the refrigerant is sealed in the refrigerant circuit 46 in the outdoor unit, and the stop valves 45 and 47 are sealed so that the refrigerant does not leak out.

  FIG. 9 is a cross-sectional view of the stop valves 45 and 47 when the air conditioner is used, the valve for blocking is omitted, and the flow of the refrigerant during heating is indicated by arrows. The tubular portion 49 forming the flow path 48 of the stop valves 45 and 47 is formed with a convex portion 50 in which the diameter of the flow path 48 is narrowed. In the vicinity of the convex portion 50, a reduced diameter portion 51 is formed by reducing the diameter of the tubular portion 49, and the convex portion 50 and the reduced diameter portion 51 constitute an accommodating portion 53 that accommodates the strainer 52. The strainer 52 can be inserted into the stop valves 45 and 47 by previously accommodating the tube portion 49 in the accommodating portion 53 in a state where the tubular portion 49 is not yet reduced in diameter, and then reducing the diameter. However, it is preferable that the strainer 52 is housed in a state in which the strainer is fixed and does not move, but may be slightly staggered. The strainer 52 may be a semicircular spherical metal net 58 having a large number of spaces attached to a holder 57 that is annular and does not allow refrigerant to pass (no holes).

  When the air conditioner is installed, pipe chips and the like are generated when the refrigerant pipes constituting the refrigerant circuit are cut and connected, and are easily contained in the refrigerant during actual operation. In this case, clogging is likely to occur particularly when chips or the like enter the capillary tube 43. However, in the air conditioner having the above-described configuration, chips and the like contained in the refrigerant that passes through the stop valve 45 from the indoor heat exchanger 42 during the heating operation are trapped by the wire mesh of the strainer 52. Circulation through the circuit 46 is reduced, and in particular, clogging in the capillary tube 43 can be prevented. In addition, in this example, since the strainer 52 is not configured alone, but is simply and directly incorporated into the stop valve 45, the number of necessary parts is reduced, the cost of the air conditioner is reduced, and the assembly is realized by a simple assembly process. Is possible.

  In addition, since the strainer 52 holds the wire mesh by a holder that does not allow the refrigerant to pass through, all the refrigerant in the flow path 48 passes through the wire mesh and can sufficiently perform the filtering action.

  In addition, it is assumed that the cooling operation is performed and the path of the refrigerant is reversed in the refrigerant circuit (see FIGS. 7 and 8), and chips captured by the wire mesh of the strainer 52 flow backward. However, since the backflowed chips and the like settle and stay in the liquid reservoir 40 a of the compressor 40, the backflowed chips and the like do not return to the capillary tube 43.

  FIG. 10 shows an example in which the stop valves 45 and 47 are realized by other configurations, and 54 shows an enlarged portion where the diameter of the flow path 48 is widened, and a connection pipe 55 is inserted into the enlarged portion 54. A holder 57 of the strainer 52 is positioned between the front end 56 of the connection pipe 55 and the enlarged portion 54, and the holder 57 holds the metal mesh 58 at the approximate center of the flow path 48. In this example, the enlarged portion 54 means a portion where the diameter of the flow path 48 is widened.

  According to this example, since the strainer 52 is held between the distal end 56 of the connection pipe 55 and the enlarged portion 54, the operation of assembling the strainer 52 is completed simply by connecting the connection pipe 55 to the stop valves 45 and 47. The operation of incorporating the strainer 52 into the stop valves 45 and 47 is extremely easy, and the manufacturing cost can be reduced and the manufacturing workability can be improved as compared with the conventional configuration in which the strainer 52 is configured alone. Further, the stop valves 45 and 47 themselves have an advantage that a molding operation after the strainer 52 is incorporated is unnecessary.

  FIG. 11 shows a stop valve having another configuration. The strainer 52 has a flare 52a having a contour similar to the inner diameter contour of the enlarged portion 54, and does not use a holder. The flare 52 a is located between the tip 56 of the connection pipe 55 and the enlarged portion 54. However, a ring 59 for holding the strainer 52 is provided on the connecting pipe 55 side of the flare 52a. The material of the ring 59 may be anything as long as it does not chemically react with the refrigerant. Further, a brazing 60 is applied to the boundary between the connection pipe 55 and the stop valves 45 and 47, thereby further strengthening the connection state between them. According to this example, the strainer 52 can be easily incorporated into the stop valves 45 and 47 as in the above example.

Embodiment 5 FIG.
This example shows a perspective view of a leg on which an outdoor unit of an air conditioner is placed. In particular, the leg is a versatile leg that allows the outdoor unit to be suspended, installed on a flat surface, installed on an inclined surface, and the like.
FIG. 12 is an external perspective view for a state of installation on a flat surface. In the figure, reference numeral 60 denotes a base portion in which L-shaped frame members are combined in a rectangular shape, and L-shaped leg members 61 are screwed to each corner portion. It is connected by a stop. The two parallel short sides of the rectangle of the base 60 are each provided with an adjustment portion 63 formed in parallel with a plurality of recesses 62 on the upper side of the long hole. A large number of screw holes 69 are formed in the leg 61 at regular intervals so as to be arranged on two L-shaped surfaces in the longitudinal direction. The leg body 61 includes a front leg body 61a and a rear leg body 61b, and a reinforcing portion 64 having a screw hole is formed on the front leg body 61a side in the rear leg body 61b. The other 65 is a connector, and 66 is a vibration-proof rubber, which is detachably attached to the leg 61 with screws.

  FIG. 13 is an external perspective view showing a form taken when the leg according to this example is used on an inclined surface, and the leg shown in FIG. 12 is rearranged separately. The front leg 61a is once removed from the base 60 and fixed to the base 60 again so that the L-shape faces outward (in this case, temporary fixing is performed, and then the main leg 61a is fixed after the inclination angle is determined). The connection tool 65 is once removed from the base 60, the convex part 65a at the tip of the connection tool 65 is inserted into the concave part of the adjustment part 63, and the other end 65b is connected with an appropriate position of the screw hole 69 on the lower end side of the front leg body 61a. To do. The inclination angle of the front leg body 61a can be found out in an optimum state by trial insertion of the convex portions 65a into the plurality of concave portions 62. Once the inclination angle of the front leg body 61a is determined, the screw 67 may be permanently fixed. There are two sets of front legs 61a on the left and right, but both may be assembled in the same manner. In addition, in the leg of FIG. 13, the rear leg body 61b becomes unnecessary. In the leg of FIG. 13, since the short side of the base 60, the coupler 65, and the front leg body 61a form a triangle, the strength for fixing the outdoor unit can be easily obtained. The anti-vibration rubber 66 is also once removed from each leg, and screwed again to an appropriate position on the L-shaped surface of the leg.

  FIG. 14 is an external perspective view in which the legs shown in FIGS. 12 and 13 are separately rearranged when the outdoor unit is suspended (for example, when the outdoor unit is installed on a wall surface of a veranda in an apartment house). In FIG. 14, since it is the same structure as FIG. 13 except the point which added the back leg 61b, description is abbreviate | omitted. However, the angle formed by the front leg 61a and the short side of the base 60 is not strictly defined in this case. The rear leg body 61 b is engaged 70 with the reinforcing portion 64 and the coupling member 65 by screws, and is also screw-engaged 70 with a screw hole near the reinforcing portion 64. And the upper part of the back leg 61b becomes a hanging tool. Therefore, the base 60 on which the outdoor unit is placed is suspended and fixed by the front leg body 61a, the coupling tool 65, and the rear leg body 61b.

  As described above, according to the leg of this example, the outdoor unit can be installed on a flat surface, an inclined surface, or a suspended state by the base 60, the front leg body 61a, the rear leg body 61b, and the connector 65. In addition, it is possible to eliminate the need to separately manufacture, store, and manage legs according to each installation state, and it is possible to provide legs that can cope with various installation states.

It is a disassembled perspective view of the outdoor unit which concerns on embodiment of this invention. It is a perspective view of the outdoor unit housing | casing which concerns on embodiment of this invention. It is a perspective view of the outdoor unit housing | casing which concerns on embodiment of this invention. It is a principal part perspective view of the outdoor unit housing | casing which concerns on embodiment of this invention. It is principal part sectional drawing of the outdoor unit housing | casing which concerns on embodiment of this invention. It is a disassembled perspective view of the electrical component box which concerns on embodiment of this invention. It is a refrigerant circuit figure at the time of heating of the air conditioner concerning an embodiment of this invention. It is a refrigerant circuit figure at the time of air conditioning of the air harmony machine concerning an embodiment of this invention. It is sectional drawing of the stop valve which concerns on embodiment of this invention. It is sectional drawing of the stop valve which concerns on embodiment of this invention. It is sectional drawing of the stop valve which concerns on embodiment of this invention. It is an external appearance perspective view of the leg of the outdoor unit which concerns on embodiment of this invention. It is an external appearance perspective view of the leg of the outdoor unit which concerns on embodiment of this invention. It is an external appearance perspective view of the leg of the outdoor unit which concerns on embodiment of this invention. It is a partially notched side view which shows the conventional strainer.

Explanation of symbols

  1 is a housing, 2 is a front panel, 3 is a right side panel, 4 is a left side panel, 5 is a top panel, 6 is a back panel, 7 is a bottom plate, 8 is a compressor, 9 is a heat exchanger, 10 is Blower, 11 is a partition plate, 12 is a machine room, 13 is a fan room, 14 is an electrical component box, 15, 16, 17 and 18 are wavy parts, 20 is a top panel, 21 is a side panel, 22 is a handle, 23 Is a short side, 24 is an edge, 25 is curling, 30 is an electrical box, 31 is a wall surface, 32 is a notch, 33 is a wiring board, 34 is a power transistor, 35 is a radiation fin, 36 is a fixture, 37 is Edge, 38 is a fitting means, 40 is a compressor, 41 is a four-way valve, 42 is an indoor heat exchanger, 43 is a capillary tube, 44 is an outdoor heat exchanger, 45 is a stop valve, 46 is a refrigerant circuit, and 47 is a stop Valve, 48, flow path, 49, tubular portion, 50, convex portion, 51, reduced diameter portion, 5 Is a strainer, 53 is an accommodating portion, 54 is an enlarged portion, 55 is a connecting pipe, 56 is a tip, 57 is a holder, 58 is a wire mesh, 59 is a ring, 60 is a base, 61 is a leg, 62 is a recess, and 63 is an adjustment. , 64 is a reinforcing part, 65 connector, 66 is a rubber for vibration isolation, 67 is a screw, 68 is a screw, and 69 is a screw hole.

Claims (7)

Compressors, heat exchangers, fans, electric component box, and a bottom plate covering them, a front panel, air conditioner outdoor unit, which is composed of side panels and top panel,
A partition plate that partitions a machine room including the compressor and a fan chamber including the heat exchanger and the fan;
The electrical component box is provided at the upper part of the machine room,
The edge that borders the top panel is provided with a handle formed by projecting the top panel itself to the outside of the outdoor unit,
The edge of the handle is rounded to form an arc;
An outdoor unit for an air conditioner, characterized in that a flange portion in contact with a top panel near the handle is provided on an upper portion of the side panel on the side where the handle is provided. Before Symbol handle the outdoor unit of an air conditioner according to claim 1, characterized in that provided on the side of the electrical component box.   The outdoor part of the air conditioner according to claim 2, wherein an electronic component having a heat radiating fin is attached to the wiring board housed in the electrical component box, and the heat radiating fin faces the blower chamber. Machine. On both sides of the front Symbol handle, an outdoor unit of an air conditioner according to claim 1, wherein a screw for fixing the said side panels and edges of said top panel is provided.   The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein a downward notch is provided on the bottom surface side of the side panel.   The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein a height of the handle is equal to a height of an edge of the top panel.   The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein the handle is formed by press-molding a top panel.

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