WO2019159360A1

WO2019159360A1 - Outdoor unit of air conditioner

Info

Publication number: WO2019159360A1
Application number: PCT/JP2018/005735
Authority: WO
Inventors: 考平坂田; 畑　茂; 陽北畠
Original assignee: 三菱電機株式会社
Priority date: 2018-02-19
Filing date: 2018-02-19
Publication date: 2019-08-22
Also published as: JPWO2019159360A1; JP6896140B2; CN210568883U

Abstract

The present invention provides an outdoor unit of an air conditioner, said outdoor unit suppressing flowing of a liquid into a machine chamber. The outdoor unit of the air conditioner is provided with: a housing that constitutes the contour of the outdoor unit; a partitioning plate, which is provided in the housing, and which partitions from each other an air blower chamber housing a heat exchanger and an air blower, and a machine chamber housing a compressor; an electric component box housing an electric component that controls the outdoor unit; a heat dissipating plate, which is provided on the side wall of the electric component box, and which cools the electric component; a duct, which covers the heat dissipating plate by being attached to the side wall of the electric component box, forms an air duct that communicates the air blower chamber and the machine chamber with each other, and has a drainage opening that is formed in a bottom wall section in the machine chamber; a water receiving section, which is provided below the duct by being extended between the machine chamber and the air blower chamber, is inclined downward from the machine chamber to the air blower chamber, and drains, to the air blower chamber, a liquid dropped from the opening; and a blocking plate, which protrudes downward from the bottom wall section, and blocks a part of the air duct formed between the bottom wall section and the water receiving section.

Description

Air conditioner outdoor unit

The present invention relates to an outdoor unit of an air conditioner having a structure for preventing water from entering a machine room.

In general, in an outdoor unit of an air conditioner in which a blower chamber containing a heat exchanger and a blower and a machine room containing a compressor and electrical components are partitioned by a partition plate, the machine room includes the compressor and electrical components. Due to this, heat is generated. Therefore, an air inlet for taking outside air into the machine room is formed in the casing of the outdoor unit for heat radiation of the compressor and the electrical components. Furthermore, in order to improve the cooling efficiency of the heat radiating plate provided for the heat radiation of the electrical components, the outdoor unit of the air conditioner in which a direct air passage leading from the air introduction port to the blower room through the machine room is formed. Has been proposed (see Patent Document 1). This outdoor unit is provided with a bottom plate that forms a downward slope so that rainwater and other liquids that have entered the air passage are drained to the blower chamber side in order to prevent liquid such as rainwater from flowing into the machine room. ing.

JP 2000-275372 A

In the outdoor unit of the air conditioner of Patent Document 1, the liquid flowing through the bottom plate may flow back into the machine room due to the backflow of the wind from the blower room side to the machine room side.

The present invention solves the above-described problems and provides an outdoor unit for an air conditioner that suppresses the inflow of liquid into a machine room.

The outdoor unit of the air conditioner of the present invention includes a casing that forms the outer shell of the outdoor unit, a blower chamber that is provided inside the casing and that stores a heat exchanger and a blower, and a mechanical chamber that stores a compressor. A partition plate, an electrical component box that stores electrical components that control the outdoor unit, a heat sink that is provided on a side wall of the electrical component box, cools the electrical components, and is attached to a sidewall of the electrical component box. Covering the heat sink, forming an air passage communicating the blower room and the machine room, a duct having an opening for drainage formed in the bottom wall part in the machine room, provided below the duct, the machine room and the blower A water receiving portion for draining liquid that has dropped from the opening to the blower chamber, and a bottom wall from the bottom wall portion. A shield that projects and shields part of the air passage formed between the bottom wall and the water receiver. Those having a plate, a.

The outdoor unit of the air conditioner of the present invention includes a shielding plate that projects downward from the bottom wall portion and shields a part of an air passage formed between the bottom wall portion and the water receiving portion. . Therefore, the shielding plate prevents the reverse flow of the wind from the blower chamber side to the machine room side, so that the outdoor unit can suppress the liquid from flowing back into the machine chamber.

It is a perspective view of the front direction of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention. It is a perspective view of the back direction of the outdoor unit of the air conditioner concerning Embodiment 1 of the present invention. It is a schematic front view which shows the inside of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a schematic top view which shows the inside of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a schematic perspective view which shows the inside of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is an enlarged view of the A section of the duct shown in FIG.

Hereinafter, the outdoor unit 100 of the air conditioner according to the present invention will be described in detail with reference to the drawings. In the following drawings, the size relationship of each component may be different from the actual one. In the following drawings, the same reference numerals denote the same or corresponding parts, and this is common throughout the entire specification. Furthermore, the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to these descriptions. In addition, in order to facilitate understanding, terms representing directions or positions (for example, “up”, “down”, “right”, “left”, “front”, “back”, etc.) are used as appropriate. However, these notations are merely described as such for convenience of explanation, and do not limit the arrangement and orientation of the apparatus or components.

Embodiment 1 FIG.
FIG. 1 is a front perspective view of an outdoor unit 100 for an air-conditioning apparatus according to Embodiment 1 of the present invention. FIG. 2 is a rear perspective view of the outdoor unit 100 for an air-conditioning apparatus according to Embodiment 1 of the present invention. The outline of the outdoor unit 100 of the air conditioner will be described with reference to FIGS. 1 and 2. The X axis shown in the following drawings including FIG. 1 indicates the left-right direction of the outdoor unit 100, the Y axis indicates the front-rear direction of the outdoor unit 100, and the Z-axis indicates the vertical direction of the outdoor unit 100. More specifically, when the outdoor unit 100 is viewed from the front, the X1 side is the left side, the X2 side is the right side, the Y1 side is the front side, the Y2 side is the rear side, the Z2 side is the upper side, and the Z2 side is the lower side. The outdoor unit 100 will be described as a side. Moreover, the positional relationship (for example, up-and-down relationship etc.) between each structural member in a specification is a thing when installing the outdoor unit 100 in the state which can be used in principle.

The outdoor unit 100 has a housing 1. The casing 1 of the outdoor unit 100 constitutes the outline of the outdoor unit 100. The housing 1 is made of sheet metal and is configured in a substantially rectangular parallelepiped shape as shown in FIG. The housing 1 includes a front panel 1a in which a circular outlet 1a1 is formed, and a back panel 1b that is installed to face the front panel 1a and covers the back of a machine room 4 to be described later. The housing 1 includes a left side panel 1c provided on a side surface on the blower chamber 3 side, which will be described later, and a right side panel 1d provided on a side surface on the machine room 4 side, which will be described later. Have. Further, the housing 1 includes a top panel 1e that covers the upper opening formed by the front panel 1a, the rear panel 1b, the left side panel 1c, and the right side panel 1d, and a bottom plate 1f that covers the lower part opening. And have. A fan guard 1g that covers the outlet 1a1 and protects the propeller fan of the blower 12 is attached to the front panel 1a. A rectangular opening 1b1 is formed in the back panel 1b, and the heat exchanger 11 is disposed inside the housing 1 through the opening 1b1. The right side panel 1 d is formed with an outside air inlet 1 d 1 for taking outside air into the machine room 4. Although the outside air inlet 1d1 is shown in a form in which a plurality of rectangular through holes are formed, the outside air inlet 1d1 only needs to take air into the machine room 4, and the outside air inlet 1d1 The structure, position, range, and the like of 1d1 are not limited to the modes shown in FIGS.

FIG. 3 is a schematic front view showing the inside of the outdoor unit 100 of the air-conditioning apparatus according to Embodiment 1 of the present invention. FIG. 4 is a schematic top view showing the inside of the outdoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. FIG. 5 is a schematic perspective view showing the inside of the outdoor unit 100 of the air conditioner according to Embodiment 1 of the present invention. Next, the internal configuration of the outdoor unit 100 of the air conditioner will be described with reference to FIGS. In order to easily explain the configuration of the outdoor unit 100 of the air conditioner, for example, in FIG. 3, the support structure of the blower 12 is omitted, and in FIG. 5, the heat exchanger 11 is omitted. In the drawing, some of the components are not shown. Moreover, the rectangular parallelepiped dotted line shown in FIGS. 4 and 5 indicates the heat radiation plate 20 accommodated in the duct 30 or the electrical component 15 d accommodated in the electrical component box 15. 4 and 5 indicate the flow of air flowing into the duct 30 from the machine room 4. The outdoor unit 100 includes a partition plate 2 that partitions the inside of the housing 1 into a blower chamber 3 and a machine chamber 4. The partition plate 2 is provided inside the housing 1 and extends upward (Z-axis direction) from the bottom plate 1f and extends in the front-rear direction (Y-axis direction) of the bottom plate 1f. For example, the partition plate 2 is formed by bending a sheet metal or the like. A heat exchanger 11 and a blower 12 disposed so as to face the heat exchanger 11 are accommodated on the blower chamber 3 side, and a compressor 13 is accommodated on the machine chamber 4 side. The heat exchanger 11 and the compressor 13 are installed on the bottom plate 1f. Further, an electrical component box 15 is disposed over the blower chamber 3 and the machine chamber 4 above the compressor 13. In addition, the electrical component box 15 may be arrange | positioned only in the machine room 4, for example, and is not limited to what is arrange | positioned over the air blower room 3 and the machine room 4. FIG.

The heat exchanger 11 exchanges heat between the refrigerant flowing inside and the outside air, and functions as an evaporator during heating operation and as a condenser during cooling operation. The heat exchanger 11 includes a plurality of heat transfer tubes 11a through which the refrigerant passes, and a plurality of fins 11b for increasing the heat transfer area between the refrigerant flowing through the heat transfer tubes 11a and the outside air. The heat exchanger 11 has a flat plate region and a curved surface region, and is formed in an L shape when viewed in a direction perpendicular to the bottom plate 1f. 3 and 4 exemplify the case where the heat exchanger 11 is formed in an L shape, but the heat exchanger 11 may be formed in a straight line when viewed in a direction perpendicular to the bottom plate 1f. Alternatively, it may be formed in a U shape with curved areas at both ends.

The blower 12 is a blowing means including a motor 12a and a propeller fan 12b, and generates air circulation for efficiently performing heat exchange in the heat exchanger 11. As shown in FIGS. 3 and 4, the blower 12 is disposed in front of the heat exchanger 11 (Y1 side) in the housing 1. The blower 12 introduces outside air into the housing 1 from the back side (Y2 side) or the side surface side (X2 side) of the housing 1 with a negative pressure between the heat exchanger 11 and the propeller fan 12b. The outside air introduced into the outdoor unit 100 is discharged toward the front side (Y1 side) of the outdoor unit 100. The blower 12 is provided on the back surface of the electrical component box 15 by applying a negative pressure between the heat exchanger 11 and the propeller fan 12 b and moving the outside air introduced into the machine room 4 into the blower room 3. The outside air is passed between the plurality of heat sinks 20 formed.

The compressor 13 compresses the sucked refrigerant and discharges it into a high-temperature and high-pressure gas refrigerant state. The compressor 13 is, for example, a rotary type, scroll type, or vane type compressor. The compressor 13 may include an inverter device, and may be configured to change the capacity of the compressor 13 by changing the operation frequency by the inverter device. In addition, the capacity | capacitance of the compressor 13 is the quantity of the refrigerant | coolant sent out per unit time.

The outdoor unit 100 includes an electrical component box 15 in the housing 1. The electrical component box 15 houses an electrical component 15 d such as a control component for controlling the operation of the outdoor unit 100. The control component includes, for example, hardware such as a circuit device, software executed on an arithmetic device such as a central processing unit, or a combination thereof. The electrical component box 15 is provided with a heat radiating plate 20 that cools the electrical component 15 d accommodated in the electrical component box 15.

The outdoor unit 100 includes a heat radiating plate 20 that cools the electrical component 15 d in the housing 1. The heat sink 20 is provided on the side wall of the electrical component box 15. More specifically, in the outdoor unit 100, if the side from which air is taken in via the heat exchanger 11 is the upstream side of the air and the side from which the air is blown is the downstream side of the air, the radiator plate 20 It is provided in the side wall part 15a of the electrical component box 15 located in the side. That is, in the outdoor unit 100, if the side from which air is blown out by the blower 12 is defined as the front, and the side from which air is taken in by the blower 12 is defined as the rear, the heat radiating plate 20 is provided behind the electrical component box 15. In the heat sink 20, for example, a plurality of plate-like fins extending in the left-right direction (X-axis direction) are arranged in parallel in the vertical direction (Z-axis direction). The plurality of heat sinks 20 are inclined so that the end on the inlet side wall 30b side is positioned below the end on the outlet side wall 30c side between the inlet side wall 30b and the outlet side wall 30c of the duct 30 described later. It is desirable to be arranged. That is, it is desirable that the plurality of heat radiating plates 20 be disposed so as to be inclined so that the end portion on the machine room 4 side is positioned below the end portion on the blower chamber 3 side. This is because rainwater that has entered between the heat radiating plates 20 easily falls into the drainage structure portion 40 described later. A duct 30 that further covers the heat sink 20 is attached to the rear of the electrical component box 15.

The outdoor unit 100 has a duct 30 in the housing 1. As shown in FIG. 5, the duct 30 is attached to the side wall of the electrical component box 15, covers the heat sink 20, and forms an air passage that connects the blower chamber 3 and the machine chamber 4. The duct 30 allows outdoor air flowing into the machine room 4 to flow from the machine room 4 to the blower room 3. The duct 30 is disposed across the blower chamber 3 and the machine chamber 4, and has a rear side wall 30 a that covers the radiator plate 20 from the rear side of the outdoor unit 100. Further, the duct 30 is located at both ends in the left-right direction (X-axis direction) of the rear side wall 30a, and includes an inlet side wall 30b that constitutes a side wall on the machine room 4 side, and an outlet side wall 30c that constitutes a side wall on the blower room 3 side. Have The duct 30 is formed so that the inlet side wall 30b and the outlet side wall 30c face each other, and an opening is formed in the inlet side wall 30b arranged in the machine room 4, and the outlet arranged in the blower room 3 An opening is also formed in the side wall 30c. The inlet side wall 30b is located in the machine room 4, and an opening formed in the inlet side wall 30b forms an air intake port 30b1. Duct 30 further includes a ceiling wall 30 d that constitutes the ceiling portion of duct 30 and a bottom wall portion 30 e that constitutes the bottom plate of duct 30. The duct 30 accommodates the heat sink 20 inside and is attached to the side wall portion 15 a of the electrical component box 15. That is, the duct 30 is attached to the rear of the electrical component box 15. In FIG. 4, the duct 30 faces the heat exchanger 11, but the duct 30 and the heat exchanger 11 are different depending on the length of the outdoor unit 100 in the longitudinal direction or the size of the heat exchanger 11. It does not have to face each other.

FIG. 6 is an enlarged view of a portion A of the duct 30 shown in FIG. The drainage structure of the outdoor unit 100 of the air conditioner will be described with reference to FIG. In addition, in FIG. 6, in order to demonstrate the waste_water | drain structure of the outdoor unit 100 of an air conditioner, illustration of a part of side wall which comprises the duct 30 is abbreviate | omitted. A white arrow W1 shown in FIG. 6 indicates the flow of air flowing from the machine room 4 into the duct 30. The duct 30 has a drain wall opening 30g formed in the bottom wall 30e. The opening 30g is a hole that penetrates the bottom wall 30e in the vertical direction, and is formed at the end of the bottom wall 30e on the machine room 4 side. A drainage structure 40 is provided in the opening 30 g of the duct 30. The drainage structure portion 40 extends downward from the bottom wall portion 30e in the opening 30g of the bottom wall portion 30e, and is formed in a bowl shape. The drainage structure 40 collects liquid such as rainwater that has entered the duct 30 and discharges it downward. And the drainage structure part 40 guides liquids, such as rain water, to the water receiving part 41 mentioned later in the opening part 30g of the bottom wall part 30e. In a plan view of the drainage structure 40 viewed from above (Z1 side), the drainage structure 40 is located between the inlet side wall 30 b and the heat sink 20. The drainage structure 40 includes an outer wall 40b that forms a side wall on the side of the inlet side wall 30b and an inner side wall 40a that forms a side wall on the side of the outlet side wall 30c, between the inlet side wall 30b and the outlet side wall 30c. The inner wall 40a and the outer wall 40b of the drainage structure 40 are opposed to each other. The drainage structure part 40 forms a space between the inner side wall 40a and the outer side wall 40b to form a gutter. The inner wall 40 a of the drainage structure 40 extends downward from the bottom wall 30 e of the duct 30. The outer side wall 40b is formed in a flat plate shape and faces the inlet side wall 30b. In the drainage structure portion 40, when the inlet side wall 30b is viewed from the front, the upper end portion 40b1 of the outer wall 40b is located in the air intake port 30b1. That is, in the drainage structure portion 40, the upper end portion 40b1 of the outer wall 40b is positioned above the lower edge portion 30b2 of the inlet side wall 30b that forms the air intake port 30b1. Further, in the drainage structure portion 40, the upper end portion 40b1 of the outer wall 40b is located above the bottom wall portion 30e. The outer side wall 40b is arranged such that the liquid such as rain water falling from the heat sink 20 or the bottom wall portion 30e scatters from the air intake 30b1 formed in the inlet side wall 30b and does not enter the machine room 4. 30 is prevented from scattering outside. The drainage structure section 40 may have an intermediate side wall 40c between the inner side wall 40a and the outer side wall 40b. The intermediate side wall 40c is formed by combining a plurality of wall portions having different angles from above to below, and suppresses the momentum of water flowing from above to below. Moreover, the intensity | strength of the drainage structure part 40 is improved by forming integrally with the inner side wall 40a and the outer side wall 40b. A water receiving portion 41 is provided below the bottom wall portion 30 e of the duct 30.

The outdoor unit 100 has a water receiver 41. The water receiver 41 is provided below the duct 30, extends between the machine room 4 and the blower room 3, and is inclined downward from the machine room 4 toward the blower room 3. The water receiving part 41 is a gutter, receives liquid such as rainwater dropped from the opening 30g of the bottom wall part 30e, flows the liquid from the machine room 4 side of the outdoor unit 100 to the blower room 3 side, and sends the liquid to the blower Drain into chamber 3. The water receiving part 41 is inclined and arranged such that the upper end part 41a arranged on the machine room 4 side is above the lower end part 41b arranged on the blower room 3 side. The upper end portion 41a is positioned below the drainage structure portion 40, and is formed wider than the lower end portion 41b in order to receive the liquid falling from the drainage structure portion 40. The lower end portion 41 b is disposed in the blower chamber 3 so that rainwater falls into the blower chamber 3. The water receiving part 41 is provided with a side wall 41e so that water does not fall outside except for the tip part of the lower end part 41b where the liquid falls. An air passage is formed between the duct 30 and the water receiving portion 41, and a first shielding plate 42 and a second shielding plate 43 are disposed in the air passage.

The outdoor unit 100 includes a first shielding plate 42 and a second shielding plate 43. The first shielding plate 42 and the second shielding plate 43 protrude downward from the bottom wall portion 30e and shield a part of the air passage formed between the bottom wall portion 30e and the water receiving portion 41. The first shielding plate 42 protrudes toward the water receiving portion 41 from below the bottom wall portion 30 e of the duct 30. The first shielding plate 42 is disposed in the machine room 4. The first shielding plate 42 is formed in a flat plate shape, and one surface faces the inlet side wall 30b side, and the other surface faces the outlet side wall 30c side. A space is formed between the tip of the first shielding plate 42 and the water receiver 41 so as not to hinder the flow of liquid flowing through the water receiver 41. By providing the first shielding plate 42, it is possible to prevent the backflow of wind from the blower chamber 3 side to the machine chamber 4 side, and liquid such as rainwater passes through the gap between the first shielding plate 42 and the water receiving portion 41. It can flow to the blower chamber 3 side. The first shielding plate 42 shields a part of the air passage formed between the bottom wall portion 30e and the water receiving portion 41, so that when a reverse wind blows from the blower chamber 3 side to the machine chamber 4 side. The liquid flowing through the water receiving portion 41 is prevented from flowing back to the machine chamber 4 side.

The second shielding plate 43 protrudes from below the bottom wall portion 30e of the duct 30 toward the bottom plate 1f of the outdoor unit 100. The second shielding plate 43 has a flat plate portion 43a formed in a flat plate shape. One surface of the flat plate portion 43a faces the inlet side wall 30b side, and the other surface is on the outlet side wall 30c side. Facing. The second shielding plate 43 is disposed on the extension line of the lower end portion 41 b of the water receiving portion 41 and is disposed in the blower chamber 3. The lower end portion 43 b of the second shielding plate 43 is located below the lower end portion 41 b of the water receiving portion 41. The second shielding plate 43 shields a part of the air path formed between the bottom wall portion 30e and the water receiving portion 41. A space is formed between the second shielding plate 43 and the lower end portion 41 b of the water receiving portion 41 so as not to hinder the flow of the liquid flowing through the water receiving portion 41. As shown in FIG. 5, the second shielding plate 43 includes a side plate portion 43 d extending from the side edge portion 41 c of the flat plate portion 43 a to the side of the water receiving portion 41. In FIG. 6, in order to clarify the structure of the water receiving portion 41, a part of the structure of the side plate portion 43 d is omitted. By providing the second shielding plate 43, water can be drained from the side of the water receiving portion 41 at a desired position in the drainage path of the water receiving portion 41, and the inflow of wind from the blower chamber 3 to the machine chamber 4 is prevented. be able to. The second shielding plate 43 shields a part of the air passage formed between the bottom wall portion 30e and the water receiving portion 41, so that when a reverse wind blows from the blower chamber 3 side to the machine chamber 4 side. The liquid flowing through the water receiver 41 is prevented from flowing back to the machine chamber 4 side.

Next, the air flow in the outdoor unit 100 will be described. First, when the blower 12 is operated, the space between the blower 12 and the heat exchanger 11 in the blower chamber 3 is in a negative pressure state. Here, the space of the blower chamber 3 in a negative pressure state communicates with the space of the machine chamber 4 via the duct 30. Further, the machine room 4 communicates with the external space through the outside air inlet 1d1 formed in the housing 1 of the outdoor unit 100. Therefore, when the space between the blower 12 and the heat exchanger 11 in the blower chamber 3 is in a negative pressure state, outside air is taken into the blower chamber 3 from the machine chamber 4 through the duct 30. At this time, outside air that has entered the machine room 4 from the outside of the outdoor unit 100 passes through the inside of the duct 30 and passes between the heat radiating plates 20 to take heat away from the heat radiating plates 20 to cool the electrical component 15d. And discharged to the blower chamber 3 side. When the rain and wind are strong, rainwater may enter the duct 30 from the machine room 4 side. Therefore, the liquid such as rainwater that has entered the duct 30 is drained from the drainage structure portion 40 to the water receiving portion 41 provided below the bottom wall portion 30e of the duct 30, and the liquid drained to the water receiving portion 41 is Then, it flows through the water receiver 41 and is drained to the blower chamber 3 side. At this time, the outer wall 40b of the drainage structure portion 40 suppresses liquid from splashing out of the duct 30 when rainwater that has entered the duct 30 flows into the water receiving portion 41, and the liquid is supplied to the water receiving portion 41. Guide it to flow. Further, the first shielding plate 42 and the second shielding plate 43 shield a part of the air passage formed between the bottom wall portion 30e and the water receiving portion 41, so that the machine room 4 from the blower room 3 side. The liquid flowing through the water receiving portion 41 is prevented from flowing backward to the machine chamber 4 side when a reverse wind blows to the side. The liquid drained to the blower chamber 3 side falls to the bottom plate 1f of the outdoor unit 100, and is drained out of the outdoor unit 100 from there. Alternatively, the liquid drained to the blower chamber 3 side is blown by the blower 12 and drained outside the outdoor unit 100.

As described above, the outdoor unit 100 of the air conditioner protrudes downward from the bottom wall portion 30e and shields a part of the air passage formed between the bottom wall portion 30e and the water receiving portion 41. The shield plate 42 or the second shield plate 43 is provided. Therefore, the 1st shielding board 42 or the 2nd shielding board 43 prevents the backflow of the wind from the fan room 3 side to the machine room 4 side, and the outdoor unit 100 flows into the machine room 4 because the liquid flows backward. Can be suppressed.

Also, the outdoor unit 100 of the air conditioner includes a drainage structure portion 40 in the duct 30, and the drainage structure portion 40 has a flat outer wall 40 b that faces the inlet side wall 30 b of the duct 30. In the outer wall 40b, when the inlet side wall 30b is viewed from the front, the upper end portion 40b1 of the outer wall 40b is located in the air intake port 30b1. The outer wall 40b covers a part of the air intake port 30b1, so that liquid such as rainwater that has entered the duct 30 is prevented from scattering into the machine chamber 4, and the liquid can flow to the water receiving portion 41. it can. As a result, the outdoor unit 100 can suppress the inflow of liquid into the machine room 4.

Further, the outdoor unit 100 of the air conditioner has a first shielding plate 42 disposed in the machine room 4 and a second shielding plate 43 disposed in the blower chamber 3. The first shielding plate 42 and the second shielding plate 43 prevent the backflow of the wind from the blower chamber 3 side to the machine chamber 4 side, and the outdoor unit 100 further flows the liquid back into the machine chamber 4. This can be suppressed.

In the outdoor unit 100 of the air conditioner, the second shielding plate 43 is disposed on an extension line of the lower end portion 41 b of the water receiving portion 41, and the lower end portion 43 b of the second shielding plate 43 is the lower end portion of the water receiving portion 41. It is located below the portion 41b. Therefore, the second shielding plate 43 can drop the liquid drained from the water receiver 41 toward the bottom plate 1f.

Further, in the outdoor unit 100 of the air conditioner, the second shielding plate 43 has a side plate portion 43 d that extends to the side of the water receiving portion 41. By positioning the side plate portion 43d on the side of the water receiving portion 41, it is possible to prevent the back wind from the blower chamber 3 to the machine chamber 4 from flowing into the water receiving portion 41. Therefore, the outdoor unit 100 can suppress the liquid from flowing back and flowing into the machine room 4.

The embodiment of the present invention is not limited to the above embodiment. For example, although the outdoor unit 100 illustrates a configuration having two shielding plates, the first shielding plate 42 and the second shielding plate 43, the outdoor unit 100 may have a configuration having three or more shielding plates.

1 housing, 1a front panel, 1a1 outlet, 1b back panel, 1b1 opening, 1c left side panel, 1d right side panel, 1d1 outside air intake, 1e top panel, 1f bottom plate, 1g fan guard, 2 partition plates 3, blower room, 4 machine room, 11 heat exchanger, 11a heat transfer tube, 11b fin, 12 blower, 12a motor, 12b propeller fan, 13 compressor, 15 electrical component box, 15a side wall, 15d electrical component, 20 heat dissipation Plate, 30 duct, 30a rear side wall, 30b inlet side wall, 30b1 air intake, 30b2 lower edge, 30c outlet side wall, 30d ceiling wall, 30e bottom wall, 30g opening, 40 drainage structure, 40a inner side wall, 40b Outer side wall, 40b1, upper end, 40c middle side wall, 41 water receiving part, 1a upper portion, 41b lower end, 41c side edges, 41e side walls, 42 the first shielding plate, 43 a second shield plate, 43a flat portion, 43b lower end, 43d side plates, 100 outdoor unit.

Claims

A housing constituting the outer shell of the outdoor unit;
A partition plate that is provided inside the housing and divides a blower chamber that houses a heat exchanger and a blower, and a machine room that houses a compressor;
An electrical component box containing electrical components for controlling the outdoor unit;
A heat sink provided on a side wall of the electrical component box for cooling the electrical component;
Attached to the side wall of the electrical component box to cover the heat radiating plate, an air passage communicating the blower chamber and the machine chamber was formed, and an opening for drainage was formed in the bottom wall portion in the machine chamber Ducts,
Liquid that is provided below the duct, extends between the machine chamber and the blower chamber, is inclined downward from the machine chamber toward the blower chamber, and falls from the opening. A water receiving part for draining into the blower chamber,
A shielding plate that protrudes downward from the bottom wall portion and shields a part of an air passage formed between the bottom wall portion and the water receiving portion;
Air conditioner outdoor unit equipped with.
The duct is
An inlet sidewall located in the machine room and forming an air intake;
In the opening of the bottom wall, a bowl-shaped drainage structure that guides liquid to the water receiver,
Have
The drainage structure has a flat outer wall facing the inlet side wall,
The outdoor unit for an air conditioner according to claim 1, wherein an upper end portion of the outer wall is located in the air intake port when the inlet side wall is viewed from the front.
The outdoor unit of an air conditioner according to claim 1 or 2, wherein the shielding plate is composed of a first shielding plate disposed in the machine room and a second shielding plate disposed in the blower chamber.
The said 2nd shielding board is arrange | positioned on the extension line of the lower end part of the said water receiving part, and the lower end part of the said 2nd shielding board is located below rather than the lower end part of the said water receiving part. The outdoor unit of the air conditioner described.
The outdoor unit of an air conditioner according to claim 3 or 4, wherein the second shielding plate has a side plate portion extending to the side of the water receiving portion.