JP2019148362A - Outdoor unit for refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of a refrigerating device capable of suppressing the mist-like water from reaching an electric component. An outdoor unit 30 includes an electrical component box 60 and electrical components housed in a storage space R3 of the electrical component box 60. The electrical component box 60 has a metal partition member 62 forming a storage space R3 partitioned from the internal space of the outdoor unit 30 and a support frame 63 which is a resin member. The electrical component box 60 includes a portion between the accommodation space R3 and the internal space in which the metal partition member 62 and the support frame 63 are arranged in order from the internal space toward the accommodation space R3. The electrical component box 60 has a bulging portion 63a in which the support frame 63 bulges toward the metal partition member 62 and comes into contact with the metal partition member 62. The air flow path of the electrical component box 60 that communicates the internal space and the accommodation space R3 is composed of a first gap G1 between the support frame 63 around the bulging portion 63a and the metal partition member 62. Includes a first flow path. [Selection diagram] FIG. 15

Description

  Outdoor unit of a refrigeration apparatus having an electrical component box

  A conventional outdoor unit of a refrigeration apparatus usually includes an electrical component box described in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2004-61074). In order to release the heat generated by the electrical components stored in such an electrical component box to the outside of the electrical component box, the electrical component box passes through the electrical component box from the outside of the electrical component box. Some are configured to allow air to flow out again.

  In the electrical component box described in Patent Document 1, a deceleration chamber is provided between the water-impervious wall and the waterproof wall in order to make it difficult for water to splash on the electrical components through the air passage for releasing heat. Yes. However, the configuration of Patent Document 1 may not be sufficient to prevent mist-like water having a small particle diameter from entering the electrical component.

  In the outdoor unit of the refrigeration apparatus, there is a problem that mist-like water is prevented from reaching the electrical components of the electrical component box.

  The outdoor unit of the refrigeration apparatus according to the first aspect includes a metal partition member and a resin member that form a storage space partitioned from the internal space of the outdoor unit, and from the internal space between the storage space and the internal space. An electrical component box including a place where a metal partition member and a resin member are arranged in order toward the accommodating space, and an electrical component accommodated in the accommodating space of the electrical component box, The resin member has a bulging portion that bulges toward the metal partition member and comes into contact with the metal partition member, and an air flow path that connects the internal space and the accommodation space is a resin member around the bulge portion. Including a first flow path formed by a first gap between the metal partition member and the metal partition member.

  In the outdoor unit having such a configuration, the first flow path can be configured to be narrow and long due to the first gap around the bulging portion, so that the mist-like water rides on the air flow of the air flow path that flows to cool the electrical components. Can be suppressed by the first flow path in the air flow path.

  The outdoor unit of the refrigeration apparatus according to the second aspect is the outdoor unit according to the first aspect, and the bulging portion is arranged so that the first flow path extends in the horizontal direction while meandering.

  In the outdoor unit having such a configuration, since the first flow path extends along the horizontal direction while meandering, the electrical component box can be made compact even if the first flow path is formed long.

  The outdoor unit of the refrigeration apparatus according to the third aspect is the outdoor unit according to the first aspect or the second aspect, and the electrical component box has an internal slit that narrows the flow path at the first gap.

  In the outdoor unit having such a configuration, since the electrical component box has an internal slit that narrows the flow path by the first gap, a mist-like water is formed in the first gap by creating a location where air flows slowly. Can be suppressed.

  The outdoor unit of the refrigeration apparatus according to the fourth aspect is any one of the outdoor units according to the first to third aspects, and the internal space includes a blower room in which a fan is disposed and a machine room in which a compressor is disposed. The first flow path is arranged such that air flows in a direction intersecting the direction in which the blower chamber and the machine chamber are arranged.

  In the outdoor unit having such a configuration, the first flow path is arranged so that the air flows in a direction intersecting the direction in which the blower chamber and the machine room are arranged. A long flow can be formed.

  The outdoor unit of the refrigeration apparatus of the fifth aspect is the outdoor unit of any one of the first to fourth aspects, and the electrical component box is configured such that the first flow path is along a horizontal plane, and the first flow path The air flow path includes a second flow path that is formed by a second gap that is in communication with the second gap along the vertical plane between the resin member and the metal partition member.

  In the outdoor unit having such a configuration, since the air flow path includes the first flow path along the horizontal plane and the second flow path along the vertical plane, the second flow path of the air flow path is compared to the case of only the first flow path. It can be formed longer by the length of the path.

  The outdoor unit of the refrigeration apparatus according to the sixth aspect is accommodated in an accommodation space partitioned from the internal space of the outdoor unit, has a first surface and a second surface, and an electrical component is mounted on the second surface. And a main body that covers the first surface and extends from the main body to a position farther than the second surface of the wiring board and surrounds the side of the wiring board away from the wiring board. A resin lid having a wall, a frame portion on the opposite side of the main body across the wiring board and extending to a position overlapping the peripheral edge of the wiring board when viewed in a direction perpendicular to the first surface, and the inside Inside the wall, it has a shielding part that extends from the frame part toward the second surface and reduces the gap between the frame part and the second surface, supports the lid, and supports the wiring board in the accommodation space. And a resin support frame.

  The outdoor unit having such a configuration has a shielding portion that extends from the frame portion toward the second surface inside the inner side wall to reduce the gap between the frame portion and the second surface. The mist-shaped water reaches the space surrounded by the lid, the support frame, and the wiring board through the space between the wiring board and the inner wall and between the frame portion and the second surface. It can be suppressed by the shielding part.

  The outdoor unit of the refrigeration apparatus according to the seventh aspect is the outdoor unit according to the sixth aspect, further comprising a metal partition member disposed closer to the internal space than the support frame between the accommodation space and the internal space. The cover includes a side portion that faces the metal partition member, and further includes a roof portion that protrudes from the main body portion and covers a joint between the metal partition member and the side portion of the lid.

  The outdoor unit having such a configuration has a roof part that protrudes from the main body part and covers the joint between the metal partition member and the side part of the lid, so that the mist-like water intrudes from the joint. Can be suppressed.

  The outdoor unit of the refrigeration apparatus according to the eighth aspect is the outdoor unit according to the seventh aspect, further comprising a harness extending from the accommodation space to the internal space, wherein the lid and / or the support frame and the metal partition member include the lid and / or Alternatively, a groove serving as a wiring path for the harness is formed between the support frame and the metal partition member, and the lid has an inclined portion that protrudes into the groove and is inclined toward the bottom of the groove, and has a holding claw that holds the harness. In addition, it has.

  In the outdoor unit having such a configuration, the lid has an inclined portion that protrudes into the groove portion and is inclined toward the bottom portion of the groove portion, and the lid has a holding claw that holds the harness. it can.

The circuit diagram which shows the outline | summary of a structure of the freezing apparatus which concerns on embodiment. The perspective view which shows the external appearance of an outdoor unit. The perspective view for demonstrating the air flow path of an outdoor unit. The perspective view which shows the outdoor unit from which the top plate and the closing valve cover were removed. The perspective view which shows the outdoor unit from which the top plate, the closing valve cover, the right side plate, the left side plate, the lid of the electrical component box, and the like are removed. The perspective view which shows the outdoor unit from which the right side plate, the left side plate, the bell mouth, the front plate, the compressor, the outdoor fan and the like are removed. The right view of the outdoor unit from which the top plate, the closing valve cover, etc. were removed. The top view for demonstrating the air flow path of an electrical component box. (A) Perspective view of electrical component box with terminal board mounting plate attached, (b) Perspective view of electrical component box with terminal board mounting plate removed. The perspective view of an electrical component box. The exploded perspective view of an electrical component box. The perspective view which shows the state by which the support frame was integrated in the metal partition member of a modification. The perspective view which shows the state in which the support frame was integrated in the metal partition member. The perspective view which shows the external appearance of a support frame. The partial expanded sectional view of an electrical component box. Sectional drawing of an electrical component box. The perspective view which shows the state with which the cover and the support frame were combined. FIG. 18 is a cross-sectional view of a lid and a support frame cut along line II in FIG. 17. (A) Partial expanded sectional view which shows a cover, a support frame, and a 1st internal printed circuit board, (b) The typical top view which shows the overlapping part of a 1st internal printed circuit board and a frame part. The perspective view of the electrical component box of a state which removed the lid | cover and the 1st internal printed circuit board. The perspective view which shows an electrical component box and an outdoor heat exchanger. The partial cross-section enlarged view of the electrical component box of the location near an outdoor heat exchanger. The perspective view which shows an electrical component box, a fan motor, and a harness. The partial expansion rear view of an electrical component box and a harness. The partial expansion perspective view of an electrical component box. The partially broken expansion perspective view which expands and shows the electrical component box of the part cut | disconnected along the II-II line | wire of FIG. The side view for demonstrating the relationship between the electrical component box which concerns on the modification 1B, and a bell mouth. The perspective view which shows the electrical component box which concerns on the modification 1B.

(1) Overall Configuration Hereinafter, a refrigeration apparatus according to an embodiment will be described with reference to the drawings. FIG. 1 shows a refrigerant circuit included in the refrigeration apparatus according to the embodiment. The refrigeration apparatus 10 shown in FIG. 1 is an air conditioner. Here, the air conditioner is described as an example of the refrigeration apparatus 10, but the refrigeration apparatus 10 includes, for example, a heat pump water heater, a refrigerator, and a cooling device that cools the inside of the refrigerator, in addition to the air conditioner. Is included. The refrigeration apparatus 10 shown in FIG. 1 includes a plurality of indoor units 20 and an outdoor unit 30 connected to the plurality of indoor units 20. The indoor unit 20 and the outdoor unit 30 are connected by communication pipes 12 and 13, and a refrigerant circuit 11 for circulating a refrigerant between the plurality of indoor units 20 and the outdoor unit 30 connected in parallel is formed. Yes. As the refrigerant circulates through the refrigerant circuit 11, the refrigeration apparatus 10 can perform a vapor compression refrigeration cycle.

  More specifically, each indoor unit 20 includes an indoor heat exchanger 21, an indoor fan 22, and an indoor control device 41. The outdoor unit 30 includes a compressor 31, an outdoor heat exchanger 32, a plurality of expansion valves 33, an outdoor fan 34, an accumulator 35, a four-way switching valve 36, and an outdoor control device 42. For example, an electric valve can be used as the expansion valve 33. During the cooling operation, the four-way switching valve 36 causes the refrigerant circuit 11 to circulate in the order of the compressor 31, the outdoor heat exchanger 32, the plurality of expansion valves 33, the plurality of indoor heat exchangers 21, and the accumulator 35. It is configured. During the heating operation, the refrigerant circuit 11 is circulated by the four-way switching valve 36 so that the refrigerant circulates in the order of the compressor 31, the plurality of indoor heat exchangers 21, the plurality of expansion valves 33, the outdoor heat exchanger 32, and the accumulator 35. It is configured.

(2) Operation of refrigeration apparatus (2-1) Flow of refrigerant during cooling Next, an outline of the operation of the refrigeration apparatus 10 will be described. During the cooling operation, the four-way switching valve 36 is maintained in a state indicated by a solid line in FIG. The high-temperature and high-pressure gas refrigerant discharged from the compressor 31 flows into the outdoor heat exchanger 32 via the four-way switching valve 36. In the outdoor heat exchanger 32, the refrigerant radiates heat by exchanging heat with outdoor air supplied by the outdoor fan 34. The refrigerant that has been radiated and cooled is divided and flows into the inlet of each expansion valve 33. In each expansion valve 33, the refrigerant is expanded and decompressed. The decompressed refrigerant flows from the outlet of each expansion valve 33 through each communication pipe 12 and into the inlet of each indoor heat exchanger 21 corresponding to each expansion valve 33. In each indoor heat exchanger 21, the refrigerant absorbs heat by exchanging heat with indoor air supplied by each indoor fan 22. The refrigerant heated in each indoor heat exchanger 21 is sucked into the compressor 31 from the outlet of each indoor heat exchanger 21 through each communication pipe 13, the four-way switching valve 36, and the accumulator 35. In each indoor unit 20, conditioned air cooled by the heat exchange with the refrigerant in each indoor heat exchanger 21 is blown out by each indoor fan 22. Cooling of the conditioned air blown out from each indoor unit 20 cools the room in which each indoor unit 20 is attached.

(2-2) Flow of Refrigerant During Heating During the heating operation, the four-way switching valve 36 is held in a state indicated by a broken line in FIG. The high-temperature and high-pressure gas refrigerant discharged from the compressor 31 flows into the indoor heat exchangers 21 through the communication pipes 13 via the four-way switching valve 36. In each indoor heat exchanger 21, the refrigerant radiates heat by exchanging heat with the indoor air supplied by each indoor fan 22. The refrigerant radiated and cooled flows out from the outlet of each indoor heat exchanger 21, passes through each connecting pipe 12, and flows into the inlet of each expansion valve 33 corresponding to each indoor heat exchanger 21. In each expansion valve 33, the refrigerant is expanded and decompressed. The decompressed refrigerant flows from the outlet of each expansion valve 33 into the inlet of the outdoor heat exchanger 32. In the outdoor heat exchanger 32, the refrigerant absorbs heat by exchanging heat with the outdoor air supplied by the outdoor fan 34. The refrigerant heated by the outdoor heat exchanger 32 is sucked into the compressor 31 from the outlet of the outdoor heat exchanger 32 through the four-way switching valve 36 and the accumulator 35. In each indoor unit 20, conditioned air heated by heat exchange with the refrigerant in each indoor heat exchanger 21 is blown out by each indoor fan 22. The warm conditioned air blown from each indoor unit 20 heats the room in which each indoor unit 20 is attached.

(2-3) Electric system Each indoor fan 22 of the plurality of indoor units 20 is driven by a motor and is supplied with electric power. Each of the indoor units 20 is provided with an indoor control device 41 for controlling the rotational speed of each indoor fan 22.

  The compressor 31, the plurality of expansion valves 33, and the outdoor fan 34 of the outdoor unit 30 are driven by a motor and are supplied with electric power. The switching direction of the four-way switching valve 36 is controlled by, for example, an electromagnet. Further, the outdoor unit 30 includes an outdoor control device 42 for controlling the rotation speed of the compressor 31 and the outdoor fan 34, controlling the opening degrees of the plurality of expansion valves 33, and switching the four-way switching valve 36. is set up. The outdoor control device 42 and the plurality of indoor control devices 41 are connected to each other to configure the control device 40. The outdoor unit 30 includes a plurality of electrical components for configuring the outdoor control device 42 and an electrical component 65 (see FIG. 8) for supplying power to the compressor 31, the plurality of expansion valves 33, and the outdoor fan 34. It is housed in an electrical component box 60 (see FIG. 9A).

(3) Appearance of the outdoor unit 30 The outdoor unit 30 includes a box-shaped casing 50 that surrounds the front and rear, the left and right, and the top and bottom, as shown in FIG. FIG. 2 shows the outdoor unit 30 when the outdoor unit 30 is viewed obliquely from the upper right front. FIG. 3 shows the outdoor unit 30 when the outdoor unit 30 is viewed obliquely from the lower right rear. Note that a protection wire mesh (not shown) attached later is removed from the outdoor unit 30 shown in FIG.

  A top plate 51 is disposed on the upper surface of the casing 50, a front plate 52 is disposed on the front surface thereof, a right side plate 53 is disposed on the right side surface thereof, and a left side plate 54 is disposed on the left side surface thereof. The bottom frame 55 is disposed on the bottom surface. A protective grill 52a is attached to the front plate 52 so as to cover the air outlet 52b. Further, a closing valve cover 56 is attached to the right side plate 53.

(4) Outline of Internal Structure of Outdoor Unit 30 FIG. 4 shows the outdoor unit 30 from which the top plate 51 and the closing valve cover 56 depicted in FIG. . FIG. 7 shows the outdoor unit 30 of FIG. 4 as viewed from the right.

  An outdoor heat exchanger 32 is installed from the rear side to the left side in the outdoor unit 30. The outdoor heat exchanger 32 is disposed in the blower room R1. The outdoor heat exchanger 32 has a larger shape than the rear opening surrounded by the top plate 51, the right side plate 53, the left side plate 54, and the bottom frame 55. Accordingly, substantially all of the outdoor air that has passed through the rear opening passes through the outdoor heat exchanger 32. Further, substantially all of the outdoor air that has passed through the plurality of left side openings 54 a of the left side plate 54 also passes through the outdoor heat exchanger 32.

  FIG. 5 shows the outdoor unit 30 from which the right side plate 53 and the left side plate 54 depicted in FIG. 4 and the lid 61 of the electrical component box 60 are removed. As shown in FIG. 5, an outdoor fan 34 is installed in the blower chamber R1. The outdoor fan 34 is disposed further in front of the region of the outdoor heat exchanger 32 present in front of the rear opening. The outdoor fan 34 is disposed further to the right than the region of the outdoor heat exchanger 32 that is located to the right of the left opening 54a. In the blower room R <b> 1, the outdoor fan 34 generates a forward airflow through the outdoor heat exchanger 32. In front of the outdoor fan 34, a bell mouth 57 is disposed with respect to the outdoor fan 34. The air pushed forward by the outdoor fan 34 passes through the opening of the bell mouth 57 and is blown out from the air outlet 52b.

  6 shows the outdoor unit 30 from which the right side plate 53, the left side plate 54, and the bell mouth 57 depicted in FIG. 4, the front plate 52 depicted in FIG. 2, the compressor 31, the outdoor fan 34, and the like are removed. It is shown. The blower room R1 and the machine room R2 are fixed to the bottom frame 55, and are partitioned by a partition plate 58 that rises upward from the bottom frame 55. An electrical component box 60 is fixed on the partition plate 58. The electrical component box 60 is arranged so that the left side portion 60L to which the heat sink 90 is attached projects to the blower chamber R1, and the right side portion 60R to which the terminal board mounting plate 81 is attached projects to the machine chamber R2. Has been placed. There is an opening 60 a on the front side of the right side portion 60 </ b> R of the electrical component box 60. The front plate 52 is disposed immediately before the opening 60a, and an airflow toward the blower chamber R1 through the opening 60a is not substantially generated. That is, the outdoor unit 30 has a configuration in which the airflow passing through the opening 60a is substantially blocked by the front plate 52.

  The terminal board mounting plate 81 attached to the right side of the electrical component box 60 is arranged to face the right side surface of the casing 50. The terminal board mounting plate 81 is located where it can be seen from the right side opening 53 c of the right side plate 53 that forms the right side surface of the casing 50. A terminal board cover plate 53a is attached to the right opening 53c. The outdoor air that has passed through the right-hand opening 53c passes through the electrical component box 60 and blower room R1 when the pressure in the blower room R1 is lower than atmospheric pressure because the outdoor fan 34 is driven. It flows to. Since the blower room R1 and the machine room R2 are partitioned by the partition plate 58, the outdoor air passes through the machine room R2 to the blower room R1 except for the air flow path passing through the electrical component box 60. There is substantially no flow path through which. In addition, resin foam (not shown) etc. are arrange | positioned between the electrical component box 60 and the top plate 51, in order to fully block the gap | interval between these. A closing valve cover 56 is attached to the right side plate 53, and the right opening 53c is connected to the space outside the outdoor unit 30 through the closing valve cover slit 56a shown in FIG. The outdoor heat exchanger 32 is, for example, a fin-and-tube type, and includes a heat transfer tube through which refrigerant flows and a large number of heat transfer fins for promoting heat exchange. When the outdoor fan 34 is driven and an air flow is generated, the air pressure in the blower chamber R1 becomes lower than the atmospheric pressure due to air resistance generated when passing between the heat transfer fins of the outdoor heat exchanger 32.

  A setting printed board (not shown) covered with a terminal board 82 and a board cover 83 is attached to the terminal board mounting plate 81. The terminal board mounting plate 81 is formed with a mounting plate slit 81 a for guiding outdoor air that has passed through the closing valve cover slit 56 a to the electrical component box 60. The outdoor air that has passed through the mounting plate slit 81a passes through the partition member slit 62a (see FIG. 9B) and enters the electrical component box 60.

(5) Configuration of Electrical Component Box 60 As shown in FIGS. 9A, 9B, and 10, a resin lid 61 is disposed on the electrical component box 60. . The lid 61 has a substantially rectangular shape when viewed from above. Under the lid 61, a metal partitioning member 62 that substantially covers a part of the front surface 60f, the right side surface 60m, the left side surface 60n, the rear surface 60u, and the bottom surface 60s (see FIG. 12) of the electrical component box 60 is disposed. Yes. FIG. 11 shows a state in which the electrical component box 60 is disassembled into each component. The metal partition member 62 is combined with a resin support frame 63, and there is a portion where a part of the support frame 63 is exposed on the surface of the electrical component box 60. The opening 60a described above is formed in the front surface 60f of the electrical component box 60. The interior of the electrical component box 60 is an accommodation space R3 that is partitioned from the blower chamber R1 and the machine chamber R2 that are internal spaces of the outdoor unit 30. In other words, the lid 61, the support frame 63, and the metal partition member 62, which are resin members, form an accommodation space R3 that is partitioned from the blower chamber R1 and the machine chamber R2.

  An electrical component 65 is accommodated in the accommodation space R3. The electrical component 65 is also mounted on the lower side of the first internal printed circuit board 66 disposed below the lid 61 and placed substantially parallel to the lid 61. The first internal printed circuit board 66 is supported by a support frame 63 as shown in FIG. A second internal printed circuit board 67 (see FIG. 8) is attached to the right side surface of the metal partition member 62, and an electrical component 65 is also mounted on the second internal printed circuit board 67. The electrical component 65 mounted on the first internal printed circuit board 66 and the second internal printed circuit board 67 includes a heat generating component that is exposed to the storage space R3 and is cooled by the air flowing through the storage space R3. Yes. Furthermore, a reactor 65 a which is a kind of electric component 65 is attached to the metal partition member 62 at the bottom surface 60 s of the electrical component box 60. The reactor 65 a is a heat generating component that generates heat when the outdoor unit 30 is operated. The reactor 65a is also cooled by the air flowing through the accommodation space R3.

  On the first internal printed circuit board 66, a heat generating component such as an IPM (Intelligent power module) is attached to the left side portion 60L of the electrical component box 60 protruding to the blower chamber R1. The IPM is, for example, an electric component 65 that is used to supply power to the motor of the compressor 31 and the outdoor fan 34. The IPM, which is a heat generating component, is thermally connected to a heat sink 90 disposed below the first internal printed circuit board 66 by, for example, a silicone resin. That is, the electrical component 65 mounted on the first internal printed circuit board 66 includes a heat generating component that is thermally connected to the heat sink 90 and cooled by the heat sink 90.

(5-1) Air Flow Path of Electrical Component Box 60 The air flow path of electrical component box 60 is mainly a slit on the accommodation space side from the right side surface on which partition member slit 62a (see FIG. 9B) is formed. It passes through 64a to 64d (see FIG. 11) and continues to the vicinity of the left side surface where the joint 60b (see FIG. 16) of the metal partition member 62 and the support frame 63 is located. The air flow path allows the accommodation space R3 to communicate with the blower room R1 and the machine room R2 (the internal space of the outdoor unit 30). FIG. 8 conceptually shows the air flowing through the air flow path by an arrow Ar1. In this electrical component box 60, four accommodation space side slits 64a to 64d are provided, but the number and arrangement position of the accommodation space side slits 64a to 64d may be changed.

  On the right side surface 60m of the electrical component box 60, in addition to the partition member slit 62a, there is a wiring opening 60c (see FIG. 9B) used for wiring for the electrical component 65. Become the main entrance to invade. In the air flow path, for example, a path from the partition member slit 62a to the accommodation space side slits 64a to 64d is a path through the accommodation space R3. The air that has passed through the housing space R3 and has cooled the electrical component 65 enters the space formed between the metal partition member 62 and the support frame 63 through the housing space side slits 64a to 64d. Among the accommodation space side slits 64a to 64d, the accommodation space side slit 64a is disposed at the lowest position (position close to the bottom surface 60s of the electrical component box 60), and then the accommodation space side slit 64d is disposed at the lowest position. The accommodation space side slits 64b and 64c are arranged at a high position.

  The accommodation space side slit 64a is an entrance of the first flow path formed in the first gap G1 (see FIG. 15). The first flow path is a section in which an arrow Ar2 is drawn in FIG. That is, the first flow path is from the accommodation space side slit 64a to the opening 63c. The first flow path is formed by a bulging portion 63 a in which the resin support frame 63 bulges toward the metal partition member 62 and contacts the metal partition member 62. In other words, the first flow path is configured by the first gap G <b> 1 between the support frame 63 around the bulging portion 63 a of the support frame 63 and the metal partition member 62. The bulging portion 63 a is a rib protruding from the support frame 63 toward the metal partition member 62. The first flow path extends along the horizontal direction. Moreover, the bulging portion 63a is arranged so that the first flow path meanders and extends in the horizontal direction.

  Looking at the arrangement of the bulging portion 63a, there is a portion where an internal slit 63b that narrows the first flow path is formed. By such an internal slit 63b, a place where air in the first gap G1 gently flows can be formed before and after the internal slit 63b, and mist-like water is made of metal and the support frame 63 at a place where the air flow is gentle. Intrusion can be suppressed by adhering to the partition member 62.

  The first flow path is arranged so that air flows in a direction intersecting with the direction in which the fan chamber R1 and the machine chamber R2 are arranged. In the present embodiment, the direction in which the blower chamber R1 and the machine room R2 are arranged is the left-right direction, and the direction intersecting the direction in which the blower room R1 and the machine room R2 are arranged is the front-rear direction.

  The second flow path is a section in which an arrow Ar3 is drawn in FIGS. That is, the second flow path is from the opening 63c to the opening 63d. The first flow path is connected to the second flow path. The first flow path is formed in the first gap G1 between the step lower surface 62q (see FIG. 13) of the metal partition member 62 and the support frame 63, and extends along the step lower surface 62q of the metal partition member 62 that is a horizontal plane. The 1st flow path is formed in this. On the other hand, the second flow path is formed in the second gap G2 between the metal partitioning member 62 (see FIGS. 12 and 13) and the support frame 63 at the location of the left side surface 60n of the electrical component box 60. A second flow path is formed along the metal partitioning member 62 at the location of the left side surface 60n, which is a surface. Thus, since the first flow path along the horizontal plane is folded back to the second flow path along the vertical plane, the air flow path can be formed longer by the amount corresponding to the second flow path. Further, by combining the first flow path along the horizontal plane and the second flow path along the vertical plane, it is possible to form a long air flow path while forming the electrical component box 60 compactly. The second channel also has a portion where an internal slit 63e for narrowing the second channel is formed. With the internal slit 63e, a place where the air in the second gap G2 gently flows can be formed before and after the internal slit 63e.

  The third flow path is a section in which an arrow Ar4 is drawn in FIGS. That is, the third flow path is from the opening 63d to the joint 60b. The first flow path, the second flow path, and the third flow path make the accommodation space R3 communicate with the blower chamber R1 that is the internal space.

  The fourth flow path is a section in which an arrow Ar5 is drawn in FIG. That is, the fourth flow path is from the accommodation space side slit 64b to the opening 63d. The fourth flow path is connected to the third flow path described above. The fifth flow path is a section in which an arrow Ar6 is drawn in FIG. That is, the fifth flow path is from the accommodation space side slit 64c to the opening 63f. The fifth flow path is connected to the third flow path described above. The sixth flow path is a section in which an arrow Ar7 is drawn in FIG. That is, the sixth flow path is from the accommodation space side slit 64d to the opening 63f. The sixth flow path is connected to the third flow path described above. The opening 63f is positioned higher than the opening 63d.

(5-2) Intrusion path of mist-like water into the electrical component box 60 The intrusion path of mist-shaped water into the electrical component box 60 is a joint 60b between the metal partition member 62 and the support frame 63 (see FIG. 16). ) May be the inlet, and the closing valve cover slit 56a (see FIG. 3) may be the inlet. Here, since the first flow path formed by the metal partition member 62 and the support frame 63 is an important configuration, the former case will be described. When the outdoor fan 34 of the outdoor unit 30 is driven, air flows from the accommodation space R3 toward the blower chamber R1 through the joint 60b, so that mist-like water to the electrical component box 60 is fed from the joint 60b. The possibility of intrusion is very small. Since the outdoor unit 30 is placed outdoors, mist-like water may enter the blower chamber R1 from the outlet 52b of the outdoor unit 30 due to wind and rain when the outdoor fan 34 is stopped. The mist-shaped water that has entered the blower chamber R1 enters the electrical component box 60 from the joint 60b. The mist-shaped water entering from the joint 60b cannot reach the accommodation space R3 unless it goes back from the first flow path to the sixth flow path. In order to reach the accommodation space side slit 64a, the first flow path must be further traced from the third flow path through the second flow path.

  The density of mist-like water is greater than air, so if there is no air flow, it will be pulled down by gravity. Therefore, mist-like water easily reaches the joint 60b from the opening 63d through the third flow path (flow path along the arrow Ar4). However, when the second flow path (flow path along the arrow Ar3) that is longer than the third flow path is traced back in the horizontal direction, the mist-like water is applied to the wall surfaces of the metal partition member 62 and the support frame 63. Adhering gradually decreases. Since the first flow path (flow path along the arrow Ar2) extending along the horizontal direction while meandering is longer than the second flow path, the mist-shaped water traveling through the first flow path It adheres to the level | step difference lower surface 62q, and it becomes difficult to reach | attain the accommodation space side slit 64a.

  Mist-like water may reach the accommodation space side slit 64b from the third flow path through the fourth flow path (flow path along the arrow Ar5). However, the opening 63d is disposed at a position lower than the accommodation space side slit 64b, and mist-like water having a density higher than air cannot reach the accommodation space side slit 64b unless it rises. It is difficult to reach the accommodation space side slit 64b unless there is a strong air flow toward the accommodation space side slit 64b.

  The mist-shaped water passes through the fifth flow path (flow path along arrow Ar6) or the sixth flow path (flow path along arrow Ar7) from the third flow path to the accommodation space side slit 64c or the accommodation space side slit 64d. There is also a possibility of reaching. However, since the opening 63f is arranged higher than the opening 63d and the opening 63f is small, the mist-like water having a density higher than that of air is attracted exclusively by gravity and is directed to the opening 63d. Without the strong air flow from the opening 63d toward the opening 63f, it is difficult to reach the accommodation space side slits 64c and 64d.

(6) Configuration in which Support Frame 63 Supports First Internal Printed Circuit Board 66 FIG. 17 shows a lid 61 and a support frame 63. When cut along line II in FIG. 17, the first internal printed circuit board 66 sandwiched between the lid 61 and the support frame 63 can be seen, as shown in FIG. FIG. 19A shows an enlarged cross-sectional structure around the first internal printed circuit board 66 depicted in FIG. What is described in FIG. 19A is the side near the front plate 52 of the casing 50. The first internal printed circuit board 66 has a first surface 66a that faces the lid 61, and a second surface 66b on which the electrical component 65 is mounted. The first surface 66 a of the first internal printed circuit board 66 is covered with the main body portion 61 a of the lid 61.

  The lid 61 has an inner wall 61b and an outer wall 61c that extend from the main body 61a toward the first internal printed circuit board 66 (downward in the present embodiment). The inner side wall 61 b surrounds the side of the first internal printed circuit board 66 over the entire periphery of the first internal printed circuit board 66. The inner wall 61b extends farther than the second surface 66b of the first inner printed circuit board 66. That is, the lower end 61bu of the inner wall 61b is below the second surface 66b. The outer side wall 61c surrounds the entire outer periphery of the inner side wall 61b. The outer side wall 61c extends downward from the peripheral edge of the main body 61a. That is, in the lid 61, the outer wall 61c is at the end except for the portion of the roof portion 61d.

  The support frame 63 has a frame portion 63 g for supporting the first internal printed circuit board 66. The frame portion 63g is provided so as to surround the opening 63h of the support frame 63 for exposing the electrical component 65 to the accommodation space R3. The frame portion 63g protrudes toward the supported first internal printed circuit board 66. In the outdoor unit 30, the frame portion 63g extends along the horizontal direction. The support frame 63 has a lid support rib 63i that rises toward the lid 61 from the base of the frame portion 63g. The lid 61 contacts the top 63it of the lid support rib 63i, and the lid 61 is supported by the lid support rib 63i. Therefore, there is substantially no gap for the mist-like water to enter at the place where the support frame 63 supports the lid 61. Further, the intrusion of mist-like water is also suppressed by the outer wall 61c surrounding the outer periphery of the lid support rib 63i.

  The frame portion 63g extends to a position overlapping the peripheral edge portion of the first internal printed circuit board 66 when viewed in the direction perpendicular to the first surface 66a (in this embodiment, the direction from top to bottom) (FIG. 19B). ) Is the part where the shaded parts overlap. A plurality of substrate support ribs 63k (see FIGS. 18 and 19A) extend from the frame portion 63g toward the lid 61 in order to support the first internal printed circuit board 66. A part of the substrate support rib 63k is disposed at a position where the peripheral edge portion of the first internal printed circuit board 66 and the frame portion 63g overlap each other, and the substrate support rib 63k exists between the first internal printed circuit board 66 and the frame portion 63g. Therefore, the first internal printed circuit board 66 supported by the plurality of circuit board supporting ribs 63k is lifted from the frame part 63g, and a gap Ap is generated between the first internal printed circuit board 66 and the frame part 63g. Yes. Since there are many places where the wiring is exposed on the first surface 66a of the first internal printed circuit board 66, there is a gap from the accommodating space R3 where the second surface 66b is disposed to the space R4 where the first surface 66a is disposed. It is required to suppress the entry of mist-like water through Ap. In order to suppress intrusion of mist-like water into the space R4, the support frame 63 has a shielding portion 63m extending from the frame portion 63g toward the second surface 66b. By this shielding part 63m, the gap Ap between the frame part 63g and the second surface 66b is reduced.

(7) The roof 61d of the lid 61
The roof portion 61d of the lid 61 will be described with reference to FIGS. 8, 20, 21, and 22. FIG. FIG. 8 shows the outdoor unit 30 from which the top plate 51, the right side plate 53, the left side plate 54, the lid 61 of the electrical component box 60, the first internal printed circuit board 66, and the like are removed. FIG. 20 shows the electrical component box 60 shown in FIG. Accordingly, the lid 61 and the first internal printed circuit board 66 of the electrical component box 60 shown in FIG. 20 are removed, and the accommodation space R3 of the electrical component box 60 is visible. FIG. 21 shows the electrical component box 60 with the lid 61 attached and a part of the outdoor heat exchanger 32. The rear surface 60 u of the electrical component box 60 faces the outdoor heat exchanger 32. The rear surface 60 u of the electrical component box 60 is constituted by a metal partition member 62. The metal partition member 62 constituting the rear surface 60u is disposed closer to the blower chamber R1 than the support frame 63 between the housing space R3 and the blower chamber R1 that is the internal space. For example, a reactor 65 a is disposed as an electrical component 65 at a location near the rear surface 60 u in the accommodation space R <b> 3 of the electrical component box 60. Since outdoor air that has passed through the outdoor heat exchanger 32 may carry mist-like water to the electrical component box 60, in order to suppress the mist-like water from entering the housing space R <b> 3 of the electrical component box 60. In addition, the lid 61 has a roof portion 61 d that protrudes rearward from the rear surface 60 u of the electrical component box 60.

  FIG. 22 shows an enlarged cross-sectional structure around the rear surface 60 u of the electrical component box 60. As shown in FIG. 22, the lid 61 has an outer wall 61 c as a side portion facing the metal partition member 62. Here, the case where the outer wall 61c directly faces the metal partition member 62 is described as an example, but the side portion of the lid 61 indirectly faces the support frame 63, for example. May be. The roof portion 61 d protrudes from the main body portion 61 a of the lid 61. The roof portion 61 d covers the joint Se between the outer wall 61 c that is a side portion of the lid 61 and the metal partition member 62. The roof portion 61 d has a tip portion bent in an L shape, and the tip portion 61 da of the roof portion 61 d is lowered to a place farther from the roof portion 61 d than the top portion 62 b of the metal partition member 62. With such a structure, mist-like water is further difficult to enter from the joint Se. The range Re1 in which the roof portion 61d extends to the left and right is the same as or longer than the range in which the accommodation space R3 extends to the left and right.

(8) Holding claw 61e of lid 61
The holding claw 61e of the lid 61 will be described with reference to FIGS. 23, 24, 25, and 26. FIG. FIG. 23 shows an electrical component box 60 and a fan motor 70. FIG. 24 shows an electrical component box 60 and a harness 71. FIG. 25 shows a part of the electrical component box 60 with the harness 71 removed. FIG. 26 shows an enlarged cross section taken along the line II-II in FIG. The harness 71 extends from the housing space R3 of the electrical component box 60 to the blower chamber R1 that is the internal space of the outdoor unit 30. The fan motor 70 is a motor that drives the outdoor fan 34. If the harness 71 is not sufficiently bound, for example, the harness 71 may hit a member inside the outdoor unit 30 and cause noise, or may hit the blade of the outdoor fan 34 and cause damage. In order to restrict the movement of the harness 71 and restrict the movement, a groove 72 serving as a wiring path of the harness 71 is provided around the lid 61. A groove 72 is formed between the metal partition member 62, the lid 61, and the support frame 63. Here, the case where the groove portion 72 is formed between the metal partition member 62 and the lid 61 and the support frame 63 is taken as an example, but the groove portion may be formed between the metal partition member and the lid. The groove may be formed between the metal partition member and the support frame. 26, a part of the metal partition member 62 protrudes to the front side and the left side to form a continuous and elongated space between the metal partition member 62, the lid 61, and the support frame 63. Thus, the groove 72 is provided.

  A plurality of holding claws 61 e protrude from the lid 61 in the groove portion 72. The holding claw 61e has an inclined portion 61ea inclined toward the bottom portion 72a of the groove portion 72 at the tip. The inclined portion 61ea can suppress the harness 71 from coming off the groove portion 72. Further, the presence of the inclined portion 61ea widens the frontage compared to the case where the holding claw 61e is extended straight up to the inclined portion 61ea. When the harness 71 is pushed into the groove 72, the harness 71 can easily enter the groove 72 due to the widening of the opening by the inclined portion 61ea. Further, after the harness 71 enters the groove portion 72, the holding claw 61e approaches the metal partition member 62 as the inclined portion 61ea approaches the bottom portion 72a of the groove portion 72, so that the harness 71 is difficult to come off.

(9) Features (9-1)
As described above, the outdoor unit 30 of the refrigeration apparatus 10 includes the electrical component box 60 and the electrical component 65 accommodated in the accommodation space R3 of the electrical component box 60. And the electrical component box 60 is metal in order toward the accommodation space R3 from the air blower room R1 and the machine room R2 between the blower room R1 and the machine room R2 and the accommodation space R3, which are internal spaces of the outdoor unit 30. It includes a place where the partition member 62 and the support frame 63 that is a resin member are disposed. By including such a part, the flameproofness of the electrical component box 60 is improved.

  The electrical component box 60 is configured to allow air to flow into the accommodation space R3 in order to suppress an increase in the temperature of the electrical component box 60 due to heat energy generated from the heat generating components in the plurality of electrical components 65. Yes. In the air flow path of the electrical component box 60 passing through the housing space R3, a first gap G1 formed between the support frame 63 that is a resin member around the bulging portion 63a and the metal partition member 62 is formed. A flow path (a section in which an arrow Ar2 in FIG. 14 is drawn) is included. Since the first flow path can be configured to be narrow and long by the first gap G1 around the bulging portion 63a, mist-like water is carried in the accommodation space R3 by riding the air flow of the air flow path that flows to cool the electrical component 65. Reaching can be suppressed by the first flow path in the air flow path.

(9-2)
As shown in FIG. 14, the first flow path (section in which the arrow Ar2 is drawn) extends along the horizontal direction while meandering. With such a configuration, the width of the support frame 63 in the front-rear direction can be reduced even when the first flow path is formed longer than when the first flow path is formed straight, and the electrical component box 60 is compact. Can be made.

(9-3)
Since the internal slit 63b formed in the first gap G1 narrows the first flow path in the first gap G1, the place where the air in the first gap G1 gently flows by the internal slit 63b is located before and after the internal slit 63b. It has been formed. Mist water can be attached to the support frame 63 and the metal partition member 62 at such a place where the air flow is gentle, and the mist water can be prevented from passing through the first gap G1. it can.

(9-4)
The first flow path is arranged so that air flows in a direction (front-rear direction in this embodiment) intersecting a direction (left-right direction in this embodiment) in which the blower chamber R1 and the machine room R2 are arranged. Since air flows in the left-right direction in the electrical component box 60, the first flow path that flows in the front-rear direction is added to the air flow path as compared with the case where the air flow path is configured by only the left-right flow path. The flow of air flowing from the chamber R2 to the blower chamber R1 can be formed long. Intrusion of mist-like water from the blower chamber R1 side is suppressed by a long and narrow first flow path extending in the front-rear direction.

(9-5)
In the present embodiment, the air flow path is a first flow path along the bottom surface 60s of the electrical component box 60 which is a horizontal plane, and a second flow path along the left side surface 60n of the electrical component box 60 which is a vertical plane (see FIG. 14). The section in which the arrow Ar3 is drawn). That is, the air flow path can be formed longer than the length of the second flow path as compared with the case of only the first flow path. Therefore, mist-like water that reaches the accommodation space R3 by going back from the joint 60b (see FIG. 10C) between the metal partition member 62 and the support frame 63 and reaching the accommodation space R3 can be reduced by the second flow path.

(9-6)
Electrical components are mounted on the second surface of the first internal printed circuit board 66 which is a wiring board. The space R4 in which the first surface 66a of the first internal printed circuit board 66 is exposed is surrounded by the lid 61, the first internal printed circuit board 66, and the frame portion 63g of the support frame 63. The shielding portion 63m extends from the frame portion 63g toward the second surface 66b on the inner side of the inner side wall 61b to reduce the gap Ap between the frame portion 63g and the second surface 66b. As a result, the mist-like water rides on the air flow flowing to cool the electrical component 65, passes between the first internal printed circuit board 66 and the inner side wall 61b, and between the frame portion 63g and the second surface 66b, thereby forming the space R4. It can be suppressed by the shielding part 63m.

(9-7)
As described with reference to FIGS. 8 to 22, in the electrical component box 60, the roof portion 61 d that protrudes from the main body portion 61 a of the lid 61 has an outer wall 61 c that is a side portion of the lid 61 and a metal partition member. The joint Se with 62 is covered. Intrusion of mist-like water from the joint Se is suppressed by the roof portion 61d.

(9-8)
As described with reference to FIGS. 23 to 26, the lid 61 of the electrical component box 60 has the holding claws 61 e that protrude into the groove portion 72. The harness 71 is held by the holding claws 61e. The holding claw 61 e has an inclined portion 61 ea inclined toward the bottom portion 72 a of the groove portion 72. The inclined portion 61ea of the holding claw 61e makes it easy to fit the harness 71 into the groove portion 72, and the harness 71 once fitted into the groove portion 72 is prevented from being detached by the inclined portion 61ea.

(10) Modification (10-1) Modification 1A
In the above embodiment, the case where the accommodation space side slits 64b, 64c, and 64d are provided in addition to the accommodation space side slit 64a has been described, but some or all of them may be omitted. Moreover, you may provide the accommodation space side slits in the support frame 63 other than the accommodation space side slits 64b, 64c, and 64d.

(10-2) Modification 1B
In the above embodiment, the case where the second flow path following the first flow path is provided has been described. For example, the accommodation space side slit 64a that is the inlet of the first flow path is provided on the front plate 52 on the opposite side to the above embodiment. The second flow path may be omitted, and the first flow path may be connected to the third flow path.

(10-3) Modification 1C
In the above embodiment, the configuration in which the first flow path extends along the horizontal direction while meandering has been described. However, the first flow path may be configured to extend substantially along the horizontal direction.

(10-4) Modification 1D
In the above-described embodiment, the air flow path is communicated between the accommodation space R3 and the blower chamber R1 by the joint 60b between the metal partition member 62 and the support frame 63. FIG. 27 and FIG. Thus, you may form the partition member slit 62c in the location which faces air blower chamber R1 of the metal partition member 62. FIG. In this case, it is preferable that at least a part of the partition member slit 62c is provided at a position overlapping the bell mouth 57 in a side view. When mist-like water enters from the air outlet 52b due to wind and rain, the water advances from the bell mouth 57 toward the rear, so that the mist-like water caused by the wind and rain is entered into the partition member slit 62c disposed on the side of the bell mouth 57. This is because the distance to reach is far.

(10-5) Modification 1E
The refrigeration apparatus 10 of the above embodiment is a cooling / heating refrigeration apparatus capable of switching between a cooling operation and a heating operation. However, the technology described in the above embodiment is also applied to a cooling refrigeration apparatus or a heating refrigeration apparatus. it can.

(10-6) Modification 1F
In the above embodiment, the refrigeration apparatus 10 in which a plurality of indoor units 20 are connected to one outdoor unit 30 has been described. However, the technology described in the above embodiment is a type in which one indoor unit is connected to one outdoor unit. The present invention can also be applied to a refrigeration apparatus of a type in which a plurality of indoor units are connected to a plurality of outdoor units.

  While the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as set forth in the claims. .

DESCRIPTION OF SYMBOLS 10 Refrigeration apparatus 20 Indoor unit 30 Outdoor unit 60 Electrical component box 61 Lid 61a Main body part 61b Inner side wall 61d Roof part 61e Holding claw 61ea Inclined part 62 Metal partition member 63 Support frame (example of resin member)
63a bulging part 63g frame part 63m shielding part 65 electrical component 66 first internal printed circuit board (example of wiring board)
71 Harness 72 Groove R1 Blower room (example of internal space)
R2 machine room (example of internal space)
R3 accommodation space

JP 2004-61074 A

Claims (8)

It has a metal partition member (62) and a resin member (63) that form a storage space (R3) partitioned from the internal space of the outdoor unit (30), and between the storage space and the internal space An electrical component box (60) including a place where the metal partition member and the resin member are arranged in order from the internal space toward the housing space;
An electrical component (65) housed in the housing space of the electrical component box,
The electrical component box has a bulging portion (63a) in which the resin member bulges toward the metal partition member and comes into contact with the metal partition member, and allows the internal space and the accommodation space to communicate with each other. The outdoor unit of the refrigeration apparatus, wherein the air flow path includes a first flow path configured by a first gap between the resin member and the metal partition member around the bulging portion. The bulging portion is disposed so that the first flow path extends in a horizontal direction while meandering.
The outdoor unit of the refrigeration apparatus according to claim 1. The electrical component box has an internal slit that narrows the flow path in the first gap.
The outdoor unit of the refrigeration apparatus according to claim 1 or 2. The internal space includes a fan room (R1) in which a fan is disposed and a machine room (R2) in which a compressor is disposed,
The first flow path is arranged so that air flows in a direction intersecting the direction in which the blower chamber and the machine chamber are arranged.
The outdoor unit of the freezing apparatus as described in any one of Claim 1 to 3. The electrical component box is configured such that the first flow path is along a horizontal plane, and is configured by a second gap that communicates with the first flow path and extends along a vertical plane between the resin member and the metal partition member. The air flow path includes the second flow path,
The outdoor unit of the refrigeration apparatus according to any one of claims 1 to 4. A wiring board (66) housed in a housing space partitioned from the internal space of the outdoor unit, having a first surface and a second surface, and an electrical component mounted on the second surface;
A main body portion (61a) disposed between the internal space and the accommodating space and covering the first surface, and extends from the main body portion to a position farther than the second surface of the wiring board, to the side of the wiring board A resin lid (61) having an inner wall (61b) surrounding the wiring board away from the wiring board;
A frame portion (63g) extending to a position on the opposite side of the main body portion across the wiring board and overlapping the peripheral edge of the wiring board when viewed in a direction perpendicular to the first surface; and the inner wall A shielding portion (63m) extending from the frame portion toward the second surface on the inner side to reduce a gap between the frame portion and the second surface, supporting the lid, and An outdoor unit of a refrigeration apparatus, comprising: a resin support frame (63) supporting the wiring board in a housing space. A metal partition member (62) disposed between the housing space and the internal space on the side closer to the internal space than the support frame;
The lid further includes a roof portion (61d) that has a side portion that faces the metal partition member, protrudes from the main body portion, and covers a joint between the metal partition member and the side portion of the lid. Have
The outdoor unit of the refrigeration apparatus according to claim 6. A harness (71) extending from the housing space to the internal space;
The lid and / or the support frame and the metal partition member constitute a groove portion (72) serving as a wiring path of the harness between the lid and / or the support frame and the metal partition member,
The lid further has an inclined portion (61ea) that protrudes into the groove portion and is inclined toward the bottom portion of the groove portion, and further includes a holding claw (61e) that holds the harness.
The outdoor unit of the refrigeration apparatus according to claim 7.

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