CN110906460B

CN110906460B - Outdoor unit of air conditioner

Info

Publication number: CN110906460B
Application number: CN201911199725.7A
Authority: CN
Inventors: 浜口理; 濑津道生; 上野円
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2014-10-15
Filing date: 2015-10-14
Publication date: 2021-05-11
Anticipated expiration: 2035-10-14
Also published as: EP3208548A4; EP3415829A2; EP3208548A1; CN110906460A; CN106796037A; EP3415829A3; CN106796037B; JP2016080242A; CN110906460A8; JP6426428B2; WO2016060157A1

Abstract

The invention provides an outdoor unit of an air conditioner, comprising: a lower rib (first shielding portion) (69) between the blocking cover (60) and the shielding plate (71) below the air intake hole (64); a shielding part (second shielding part) (72) which blocks the space between the shielding plate (71) and the box body (11) below the vent hole (54); and a shielding part (third shielding part) (73) which is arranged between the upper blocking cover (60) at the upper end of the shielding plate (71) and the box body (11), wherein the airflow flowing in from the air suction hole (64) bends downwards between the upper end of the shielding plate (71) and the third shielding part (73) after rising along the shielding plate (71), descends along the shielding plate (71), and is guided towards the vent hole (54).

Description

Outdoor unit of air conditioner

Technical Field

The present invention relates to an outdoor unit of an air conditioner.

Background

Patent document 1 discloses an outdoor unit of a conventional air conditioner. The outdoor unit is provided with a compressor, a heat exchanger, a blower and an electric unit in a casing. The electric unit has a circuit board and is electrically connected to the compressor and the blower. A piping connection portion to which a refrigerant piping for air conditioning is connected is provided on one side surface of the casing, and the side surface of the casing including the piping connection portion is covered with a resin cover. The lower portion of the back side of the cover is provided with a drawing-out port for drawing out the refrigerant pipe connected to the pipe connecting portion to the outside of the cover.

In addition, in order to improve the cooling effect of the electric parts arranged in the box body, a vent hole is arranged on the side surface of the box body, and an air suction hole is arranged on the cover. A shielding plate is arranged between the vent hole and the air suction hole, and the airflow flowing in from the air suction hole ascends along the inner surface of the shielding plate and flows into the vent hole after descending along the outer surface of the shielding plate. Further, a recess for a handle is provided in an upper portion of the cover. The engaging claw provided on the inner surface of the lid is inserted into a slit-shaped engaging hole formed in the side surface of the case and slid, thereby fixing the lid to the case.

Patent document 1: japanese patent No. 4391368

The conventional outdoor unit described above has the following problems: when strong wind pressure is applied to the outlet, raindrops and dust entering the cover from the outlet enter the box body through the vent hole along with the airflow, so that the electrical system of the electrical part breaks down.

Further, there are also problems as follows: when fingers are inserted into a handle recess provided in the upper portion of the cover to carry the outdoor unit, the cover is deformed by the weight of the outdoor unit, a gap is formed between the cover and the casing, and raindrops and dust enter the cover.

Further, there are also problems as follows: when the cover is slid after the engagement claw is inserted into the engagement hole, a gap is formed at the engagement hole, and noise inside the case leaks to the outside through the gap.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an outdoor unit of an air conditioner, which can improve a cooling effect of an electric part by allowing outside air to flow into a casing and can prevent raindrops and dust from entering the casing.

In view of the above-described problems, it is an object of the present invention to provide an outdoor unit of an air conditioner, in which a handle recess provided in an upper portion of a cover fixed to one side surface of a casing is not easily deformed when the outdoor unit is transported.

In view of the above, it is an object of the present invention to provide an outdoor unit of an air conditioner, which can prevent noise inside a casing from leaking to the outside through a gap of an engaging hole.

In order to achieve the above object, an outdoor unit of an air conditioner according to the present invention is an outdoor unit of an air conditioner in which a compressor, a heat exchanger, a blower, and an electric unit having a circuit board connected to the compressor and the blower are disposed in a casing, wherein a pipe connection portion to which a refrigerant pipe is connected and a vent hole opened above the pipe connection portion are formed in one side surface of the casing, and the outdoor unit of the air conditioner further includes: a cover covering the vent hole and the pipe connection portion and having an air intake hole and an outlet of the refrigerant pipe; a shielding plate vertically disposed between the air vent hole and the air suction hole, and an upper end of the shielding plate is disposed above the air vent hole and the air suction hole; a first shielding portion that blocks a gap between the cover and the shielding plate below the suction hole; the second shielding part is arranged below the vent hole and used for blocking the space between the shielding plate and the box body; and a third shielding portion that blocks a space between the cover and the case above an upper end of the shielding plate, and the airflow flowing in from the air intake hole is bent downward between the upper end of the shielding plate and the third shielding portion after rising along the shielding plate, and then falls along the shielding plate and is guided toward the air vent.

According to the above configuration, raindrops and dust entering the cover from the outlet are blocked by the first, second, and third blocking portions and do not reach the vent hole.

In addition, the outdoor unit of an air conditioner having the above-described configuration may further include a guide portion formed of an コ -shaped protruding rib that is opened downward from an inner surface of the cover, the guide portion guiding the airflow flowing in from the intake hole downward, and the airflow flowing out from the guide portion rising along the shielding plate.

In the outdoor unit of an air conditioner having the above configuration, a wall surface of the guide portion facing a side surface of the casing is formed by the shielding plate.

In addition, the present invention is characterized in that the outdoor unit of the air conditioner having the above-described configuration includes a metal fire prevention plate which is disposed on an inner surface side of the cover, covers the pipe connection portion, and is integrally formed with the shield plate.

In the outdoor unit of an air conditioner having the above configuration, the casing is partitioned into a heat exchanger chamber and a machine chamber by a partition wall, the blower and the heat exchanger are disposed in the heat exchanger chamber, the electric unit and the compressor are disposed in the machine chamber, and the heat exchanger chamber and the machine chamber are communicated with each other through a communication hole provided in the electric unit.

In order to achieve the above object, an outdoor unit of an air conditioner according to the present invention includes a compressor, a heat exchanger, and a blower in a casing, and is characterized in that an opening is provided in an upper portion of one side surface of the casing, a pipe connecting portion to which a refrigerant pipe is connected is disposed in a lower portion of the casing, a handle recess provided in a cover covering the pipe connecting portion is inserted into the opening, and an upper wall of the opening abuts against an outer wall of the recess.

According to the above configuration, when the outdoor unit is lifted up by inserting fingers into the recessed portion, the upper wall of the opening of the casing is supported by the fingers from the inside of the recessed portion.

In the outdoor unit of an air conditioner having the above configuration, the upper wall of the opening has a curved portion curved toward the inside of the casing, and the curved portion is in surface contact with the outer wall of the recessed portion.

In the outdoor unit of an air conditioner according to the present invention, the bent portion is inclined upward toward the inside of the casing.

In the outdoor unit of an air conditioner having the above configuration, the cover is fixed to the casing by sliding upward after the concave portion is inserted into the opening.

In the outdoor unit of an air conditioner having the above configuration, the wiring inside the casing is drawn out between the casing and the cover through a gap between the opening and the recess.

In order to achieve the above object, an outdoor unit of an air conditioner according to the present invention includes a compressor, a heat exchanger, and a blower in a casing, and is characterized by including a pipe connecting portion and a cover covering the pipe connecting portion, wherein the pipe connecting portion is disposed on one side surface of the casing, a refrigerant pipe is connected to the pipe connecting portion, an engaging claw provided on an inner surface of the cover is inserted into a slit-shaped engaging hole formed in the side surface of the casing and slides, the cover is fixed to the casing, an annular outer circumferential rib disposed on a circumferential portion and abutting against the casing, and a shielding rib protruding at the same height as the outer circumferential rib are formed on the inner surface of the cover, and the shielding rib surrounds a periphery of the engaging hole when the cover is fixed.

According to the above configuration, the airflow flowing into the space between the side surface of the case and the inner surface of the cover through the gap of the engaging hole, which is generated when the engaging claw is inserted into the engaging hole and slid, is blocked by the blocking rib so that the airflow does not flow between the side surface of the case and the inner surface of the cover.

In the outdoor unit of an air conditioner according to the present invention, the outer circumferential rib forms a part of the shielding rib.

According to the outdoor unit of the air conditioner of the present invention, the upper end of the shielding plate is disposed above the air vent hole and the air suction hole, the space between the cover and the shielding plate is blocked by the first shielding portion, the space between the shielding plate and the casing is blocked by the second shielding portion, and the space between the cover and the casing is blocked above the upper end of the shielding plate by the third shielding portion. The airflow flowing in from the air intake hole rises along the shielding plate, then bends downward between the upper end of the shielding plate and the third shielding portion, descends along the shielding plate, and is guided toward the air vent. Therefore, water drops and dust entering the cover from the outlet can be prevented from entering the box body through the vent hole.

Further, according to the outdoor unit of the air conditioner of the present invention, when the outdoor unit is lifted by inserting fingers into the concave portion, the upper wall of the opening of the casing is supported by the fingers from the inside of the concave portion. This reduces the weight of the outdoor unit applied to the cover, thereby preventing deformation of the cover.

Further, according to the outdoor unit of the air conditioner of the present invention, the shielding portion can shield the air flow flowing between the side surface of the casing and the inner surface of the cover through the gap of the engaging hole, which is generated when the engaging claw is inserted into the engaging hole and slid, so that the air flow does not flow between the side surface of the casing and the inner surface of the cover. Thus, noise generation can be prevented.

Drawings

Fig. 1 is a front view of an outdoor unit according to a first embodiment of the present invention.

Fig. 2 is a perspective view showing a right side portion from a back side of an outdoor unit according to the first embodiment of the present invention.

Fig. 3 is a perspective view showing a left side portion from the back side of the outdoor unit according to the first embodiment of the present invention.

Fig. 4 is an exploded perspective view of an outdoor unit according to a first embodiment of the present invention.

Fig. 5 is an exploded perspective view showing a part of a right side portion of an outdoor unit according to a first embodiment of the present invention from the right side.

Fig. 6 is an exploded perspective view showing a part of a right side portion of an outdoor unit according to a first embodiment of the present invention from the left side.

Fig. 7 is a perspective view showing an inner surface of a cover according to the first embodiment of the present invention.

Fig. 8 is a perspective view showing an inner surface of a cover according to the first embodiment of the present invention.

Fig. 9 is an explanatory view illustrating a gas flow path of an outdoor unit according to a first embodiment of the present invention.

Fig. 10 is an explanatory view illustrating a gas flow path of an outdoor unit according to a first embodiment of the present invention.

Fig. 11 is an enlarged perspective view of an engaging pawl according to a first embodiment of the present invention.

Fig. 12 is an enlarged plan view of the engaging pawl according to the first embodiment of the present invention.

Fig. 13 is a sectional view showing a state where the engaging claw according to the first embodiment of the present invention is inserted into the engaging hole.

Fig. 14 is a front cross-sectional view of a recess for a handle in a state where a cover according to the first embodiment of the present invention is fixed to a case.

Fig. 15 is a perspective view showing a recess for a handle according to the first embodiment of the present invention.

Fig. 16 is a perspective view showing a recessed portion for a handle according to the first embodiment of the present invention from the back side.

Fig. 17 is an explanatory view illustrating a gas flow path of an outdoor unit according to a second embodiment of the present invention.

Fig. 18 is an explanatory view for explaining a gas flow path of an outdoor unit according to a third embodiment of the present invention.

Description of the reference numerals

10 outdoor machine

11 case body

11R Right side panel

12 exhaust port

12a grid

20 partition wall

21 heat exchanger chamber

22 mechanical chamber

24 heat exchanger

30 blower

40 compressor

50 electric part

51 fin

52 piping connection part

52a two-way valve

52b three-way valve

53 opening part

53a upper wall

53b curved part

54 vent hole

55 terminal part

56 snap-fit hole

60 cover

63R recess

63RO outer wall

64 air suction hole

65 bulge part

65a outlet

66 snap-in claw

66a peripheral rib

66b shielding rib

66c thin wall part

67 upper rib

68 side rib

69 lower rib (first shade)

70 fire-proof plate

71 baffle plate

72 shielding part (second shielding part)

Rib 73 (third shielding part)

90 guide part

Detailed Description

< first embodiment >

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a front view of the outdoor unit 10, and fig. 2 and 3 are perspective views showing the right and left sides of the outdoor unit 10 from the back side. The outdoor unit 10 includes a rectangular parallelepiped casing 11, and the casing 11 has an upper panel 11U disposed on an upper portion and a bottom panel 11D disposed on a bottom portion. A front panel 11F is disposed in front of the circumferential surface of the case 11, and a rear panel 11B is disposed behind the circumferential surface. Further, a left side panel 11L is disposed on the left side, and a right side panel 11R is disposed on the right side. The left and

right side panels

11L and 11R are formed in an L shape when viewed from above, and are partially curved toward the rear side.

An exhaust port 12 is opened in the center of the front plate 11F of the case 11, and a circular grill 12a is attached to the exhaust port 12. Rear panel 11B has a rear air inlet 11BS, and left side panel 11L has a left air inlet 11 LS. The right side plate 11R has a right side air inlet 11RS opened in a part of the rear surface side. Left side air inlet 11LS and right side air inlet 11RS are formed in a grid shape. Further, handle

recesses

63R and 63L are provided in the upper portions of the right and

left side panels

11R and 11L, respectively.

Fig. 4 is an exploded perspective view of the outdoor unit 10, and fig. 5 and 6 are exploded perspective views showing a part of the right side portion of the outdoor unit 10. In fig. 5 and 6, the blower 30 and the compressor 40 are not shown. A heat exchanger 24 is disposed on the rear surface side inside the case 11. Both ends of the heat exchanger 24 are bent and the heat exchanger 24 is formed in a substantially コ shape (may be substantially L-shaped) as viewed from above. Heat exchanger 24 is disposed to face left side air inlet 11LS, back air inlet 11BS, and right side air inlet 11RS, and is exposed to the outside of case 11 through left side air inlet 11LS, back air inlet 11BS, and right side air inlet 11 RS.

Inside the case 11, a partition wall 20 is provided upright from the bottom panel 11D, and the heat exchanger 24 is partitioned by the partition wall 20. The partition wall 20 is formed in an L-shape as viewed from above, partitions the blower 30 and the compressor 40, and partitions the heat exchanger 24 and the compressor 40 by being wound back to the back side of the compressor 40. Thus, the interior of the case 11 is divided into a heat exchanger chamber 21 and a machine chamber 22 by the partition wall 20, and the heat exchanger 24 is disposed on the rear side of the heat exchanger chamber 21 and the blower 30 is disposed on the front side.

When the blower 30 is driven, the suction force of the air causes the outside air to flow into the heat exchanger compartment 21 through the left side air inlet 11LS, the back air inlet 11BS, and the right side air inlet 11 RS. The inflow external air is heat-exchanged by the heat exchanger 24, and flows through the heat exchanger chamber 21 and is blown out from the exhaust port 12 to the outside.

The machine chamber 22 is vertically partitioned, and an electric unit 50 is disposed in an upper portion and a compressor 40 is disposed in a lower portion. The electric unit 50 has a circuit board (not shown), and is electrically connected to the blower 30 and the compressor 40. The electric unit 50 controls the operation of the outdoor unit 10. A terminal portion 55 is disposed on an outer surface of the right side plate 11R, and the terminal portion 55 is used to introduce a power supply line and/or a control line from the outside of the outdoor unit 10 to the electric part 50.

A heat sink (not shown) is provided on the bottom surface of the electric part 50. The radiator has fins 51 on the heat exchanger chamber 21 side, and the fins 51 are exposed to the inside of the heat exchanger chamber 21. Thereby, the fins 51 are cooled by the airflow flowing through the heat exchanger chamber 21. The heat generating components mounted on the circuit board are cooled by the heat sink and the fins 51.

A vent hole 54 is provided in the right side panel 11R forming the side wall of the machine chamber 22. The electric unit 50 is provided with a communication hole (not shown) for communicating the heat exchanger chamber 21 and the machine chamber 22. Thus, if the blower 30 is driven, the air of the machine chamber 22 is introduced into the heat exchanger chamber 21 via the communication hole. The external air can be sucked into the machine chamber 22 through the vent hole 54 by the suction force, and the cooling effect of the electric part 50 can be improved.

An opening 53 is opened in an upper portion of an outer surface of the right side plate 11R, and a pipe connection portion 52 for connecting two refrigerant pipes (not shown) is disposed in a lower portion of the outer surface. Further, a vent hole 54 is disposed between the opening 53 and the pipe connection portion 52. The opening 53, the pipe connection portion 52, and the vent hole 54 are covered with a cover 60 made of resin. At this time, the outer wall 63RO of the handle recess 63R is inserted into the opening 53.

The pipe connection portion 52 has a two-way valve 52a and a three-way valve 52b, and the refrigerant pipe is connected via the two-way valve 52a and the three-way valve 52 b. During the cooling operation, the liquid refrigerant flows through the refrigerant pipe connected to the two-way valve 52 a. On the other hand, during the cooling operation, a gas refrigerant flows through the refrigerant pipe connected to the three-way valve 52 b.

Fig. 7 and 8 are perspective views showing the inner surface side of the cover 60, and fig. 8 shows a state where the fireproof plate 70 is fitted and inserted. In order to cover the two-way valve 52a and the three-way valve 52b, a bulging portion 65 is formed at a lower portion of the cover 60, and a drawing port 65a is opened at a rear surface side of the bulging portion 65. The refrigerant pipe connected to the pipe connection portion 52 and the power supply line and/or the control line connected to the terminal portion 55 are drawn out to the outside of the cover 60 through the drawing port 65 a. A handle recess 63R is provided in the upper portion of the cover 60, and an intake hole 64 communicating with the vent hole 54 is provided between the recess 63R and the bulging portion 65.

A metal fire shield plate 70 is disposed between the right side plate 11R and the cover 60. A bulging portion 75 is formed at a lower portion of the fire shield 70 so as to cover the pipe connection portion 52. The bulging portion 75 of the fireproof plate 70 is fitted into the inside of the bulging portion 65 of the insertion cover 60. The fire-proof plate 70 prevents a fire from entering the casing 11 through the pipe connecting portion 52 when a fire breaks out around the outdoor unit 10.

A shielding plate 71 is formed integrally with the fire shield plate 70 at an upper portion of the fire shield plate 70. The shielding plate 71 is disposed upright between the ventilation hole 54 and the suction hole 64, and the upper end of the shielding plate 71 is located above the ventilation hole 54 and the suction hole 64.

An upper rib 67 is provided on the inner surface side of the cover 60 and above the air intake hole 64. The upper rib 67 has side ribs 68 at both ends thereof, the side ribs 68 pass through the side of the air intake hole 64 and extend downward, and the upper rib 67 and the side ribs 68 are formed in an コ shape that is open downward. Further, a lower rib (first shielding portion) 69 is provided below the side rib 68. The upper rib 67, the side ribs 68, and the lower rib 69 protrude from the inner surface of the cover 60 and abut against the outer surface of the shielding plate 71.

Thereby, the guide portion 90 (see fig. 9) is formed, and the guide portion 90 has the upper rib 67 as an upper wall, the side rib 68 as a side wall, and a part of the outer surface of the shielding plate 71 as a peripheral wall. The guide portion 90 guides the airflow flowing in from the air intake hole 64 to the lower side of the shielding plate 71. At this time, since the wall surface of the guide portion 90 is formed by the shielding plate 71, the distance between the shielding plate 71 and the inner surface of the cover 60 can be shortened. Therefore, the outdoor unit 10 can be downsized. The fireproof plate 70 and the shielding plate 71 are formed integrally, and when the fireproof plate 70 blocks the gap between the cover 60 and the shielding plate 71, the lower rib 69 may be omitted.

A shielding portion (second shielding portion) 72 that blocks between the shielding plate 71 and the right side panel 11R is provided below the ventilation hole 54. The shielding portion 72 prevents raindrops and dust flowing into the cover 60 from the outlet 65a from entering the vent hole 54. Further, a rib (third shielding portion) 73 is provided on the inner surface side of the cover 60, and the rib 73 is disposed above the upper end of the shielding plate 71 so as to block a space between the cover 60 and the right side plate 11R. The rib 73 prevents raindrops and dust flowing into the cover 60 from entering the case 11 through the opening 53.

Fig. 9 and 10 are explanatory views of the gas flow path a communicating the vent hole 54 and the suction hole 64, and fig. 9 is a plan view of the cover 60 showing the suction hole 64 from the inner surface side. Fig. 10 is a front cross-sectional view of the gas flow path a in a state where the cover 60 is fixed to the right side plate 11R. The gas flow entering the gas flow path a from the suction hole 64 descends along the guide portion 90. The airflow that descends along the guide portion 90 and flows out of the guide portion 90 is blocked by the lower rib 69 and flows sideways along the lower rib 69. The airflow flowing sideward is detoured to the lower end of the side rib 68 and rises along the outer surface of the shielding plate 71 outside the side rib 68.

The airflow rising outside the side ribs 68 bends between the upper end of the shielding plate 71 and the rib (third shielding portion) 73, descends along the inside of the shielding plate 71, and flows into the case 11 through the vent hole 54. By bending the gas flow path a up and down a plurality of times, water droplets entering the breathing holes 54 from the air intake holes 64 can be further reduced.

Fig. 11 and 12 are an enlarged perspective view and a plan view of the engagement claw 66, and fig. 13 is a cross-sectional view showing a state in which the engagement claw 66 is inserted into the engagement hole 56. An engagement claw 66 is provided on a circumferential edge of an inner surface of the cover 60, and the cover 60 is fixed to the right side panel 11R by screwing after the engagement claw 66 is inserted into the slit-shaped engagement hole 56 provided in the right side panel 11R and the cover 60 is slid upward (see fig. 5 and 6).

At this time, an annular outer circumferential rib 66a (see fig. 7 and 8) that is arranged along the circumferential portion and protrudes is provided on the inner surface of the cover 60, and the outer circumferential rib 66a abuts against the right side panel 11R. Further, a shielding rib 66b protruding at the same height as the outer circumferential rib 66a is formed around the engaging pawl 66, and a part of the shielding rib 66b is formed by the outer circumferential rib 66 a.

When the cover 60 is fixed to the right side panel 11R, the shielding rib 66b is disposed around the engagement hole 56. Thus, noise (arrow N) leaking to the outside through the gap S1 of the engagement hole 56 is blocked by the blocking rib 66b, and the gap S1 is generated when the engagement pawl 66 is inserted into the engagement hole 56 from the inside of the housing 11 and then slid. Therefore, noise generated when the compressor 40 or the like is driven and generated inside the casing 11 can be prevented from leaking to the outside through the gap S1.

Further, a concave thin portion 66c is provided between the engagement claw 66 and the shielding rib 66b, and a sink (concave portion) is prevented from being generated at the time of molding.

Fig. 14 is a front cross-sectional view of the recess 63R in a state where the cover 60 is fixed to the right side panel 11R. When the cover 60 is fixed to the right side panel 11R, the outer wall 63RO of the handle recess 63 is inserted into the opening 53 formed in the right side panel 11R. At this time, the outer wall 63RO of the recess 63R abuts on the upper wall 53a of the opening 53. Thus, when the outdoor unit 10 is lifted by inserting fingers into the concave portion 63R, the upper wall 53a of the opening 53 is supported by the fingers. Therefore, the weight of the outdoor unit 10 applied to the cover 60 can be reduced, so that the cover 60 can be prevented from being deformed.

Further, a curved portion 53b curved toward the inside of the case 11 is formed on the upper wall 53a of the opening 53, and the curved portion 53a and the outer wall 63RO of the recess 63R are in surface contact with each other. This enables the upper wall 53a to be stably supported when the outdoor unit 10 is lifted, thereby further preventing the cover 60 from being deformed. The bent portion 53a is inclined upward toward the inside of the case 11. Thus, when the fingers are inserted into the recessed portion 63R, the fingers can easily grip the recessed portion 63R, and the convenience in carrying is improved.

Further, when the opening 53 is largely opened in the vertical direction with respect to the outer wall 63RO of the recess 63R and the cover 60 is slid and fixed upward along the right side panel 11R, a gap S2 is generated between the lower wall 53c of the opening 53 and the outer wall 63RO of the recess 63R. Thereby, the power supply line and/or the control line can be drawn out from the electric part 50 to the terminal part 55 through the gap S2.

Fig. 15 and 16 are perspective views of the handle recess 63L provided in the left side panel 11L. The recess 63L is made of resin and is inserted into and fixed to an opening (not shown) formed in the upper portion of the left side plate 11L. A plurality of slit-shaped through holes 63LH2 extending vertically are provided in parallel and in parallel in the peripheral wall of the recess 63L. Further, a plurality of slit-shaped through holes 63LH1 extending in the front-rear direction are provided in parallel and in parallel in the bottom wall of the recess 63L. Thus, the outside air is sucked into the case 11 through the through holes 63LH1 and 63LH 2. Therefore, the heat exchange rate of the heat exchanger 24 can be improved.

The through holes 63LH1 and 63LH2 are formed continuously, and reinforcing ribs are provided around the rear surfaces of the through holes 63LH1 and 63LH2 to reinforce the peripheral wall and the bottom wall of the recess 63L. This prevents the concave portion 63L from being deformed when the outdoor unit 10 is lifted.

According to the present embodiment, the upper end of the shielding plate 71 is disposed above the ventilation hole 54 and the intake hole 64, and the lower rib (first shielding portion) blocks the gap between the cover 60 and the shielding plate 71, and the shielding portion 72 (second shielding portion) blocks the gap between the shielding plate 71 and the housing 11. The airflow flowing in from the air intake hole 64 rises along the shielding plate 71, then bends downward between the upper end of the shielding plate 71 and the rib (third shielding portion) 73, descends along the shielding plate 71, and is guided toward the ventilation hole 54. This prevents water droplets and dust from entering the vent hole 54 through the outlet 65 a.

Further, since the guide portion for guiding the airflow flowing in from the intake holes 64 downward is formed by the rib of the cover 60, the gas flow path a can be bent up and down a plurality of times, and water droplets entering the vent holes 54 from the intake holes 64 can be further reduced.

Further, since the shielding plate 71 forms a wall surface of the guide portion facing the side surface of the case 11, the distance between the shielding plate 71 and the inner surface of the cover 60 can be shortened. Therefore, the outdoor unit 10 can be downsized.

Further, by providing the metal fire shield 70 disposed on the inner surface side of the cover 60 and covering the pipe connecting portion 52 and integrally forming the shield plate 71 from the fire shield 70, the number of parts of the shield plate 71 can be reduced, and cost reduction can be achieved.

The heat exchanger chamber 21 and the machine chamber 22 are communicated by a communication hole (not shown) provided in the electric unit 50, and if the blower 30 is driven, air in the machine chamber 22 is introduced into the heat exchanger chamber 21 through the communication hole. By the suction force, the outside air can be sucked into the machine chamber 22 through the air intake holes 64 and the air vent holes 54, and the cooling effect inside the electric part 50 can be improved.

Further, by inserting the handle recess 63R provided in the cover 60 into the opening 53 and bringing the upper wall 53a of the opening 53 into contact with the outer wall 63RO of the recess 63R, the upper wall 53a of the opening 53 is supported by fingers when the fingers are inserted into the recess 63R and the outdoor unit 10 is lifted. Therefore, the weight of the outdoor unit 10 applied to the cover 60 can be reduced, so that the cover 60 can be prevented from being deformed.

Further, a curved portion 53b curved toward the inside of the case 11 is formed on the upper wall 53a of the opening 53, and the curved portion 53b is in surface contact with the outer wall 63RO of the recess 63R. This stably supports the upper wall 53a when the outdoor unit 10 is lifted, and further prevents the cover 60 from being deformed.

Further, by inclining the curved portion 53b upward toward the inside of the case 11, when fingers are inserted into the concave portion 63R, the fingers easily grip the inside of the concave portion 63R, and convenience in carrying is improved.

The cover 60 is fixed to the case 11 by inserting and sliding an engagement claw 66 provided on the inner surface of the cover 60 into a slit-shaped engagement hole 56 formed in the side surface of the case 11, an outer circumferential rib 66a protruding so as to surround the outer circumference and a shielding rib 66b protruding at substantially the same height as the outer circumferential rib 66a are formed on the inner surface of the cover 60, and the shielding rib 66b is disposed around the engagement hole 56 when the cover 60 is fixed. Thus, the shielding rib 66b shields the noise (arrow N) leaking to the outside through the gap S1 of the engagement hole 56. Therefore, noise generated when the compressor 40 or the like is driven and generated inside the casing 11 can be prevented from leaking to the outside through the gap S1.

< second embodiment >

Fig. 17 is an explanatory view illustrating a gas flow path a of the outdoor unit 10 according to the second embodiment. In addition, the same portions as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In contrast to the first embodiment, in the second embodiment, the upper rib 67 is not brought into contact with the shielding plate 71, and the guide portion 90 is not formed on the outer surface of the shielding plate 71.

Specifically, the guide plate 91 forms the guide portion 90, and the guide plate 91 extends downward from the tip of the upper rib 67, and has a lower end located below the suction hole 64. Thereby, the airflow flowing in from the air intake hole 64 descends along the outer surface of the guide plate 91, and winds back to the inner surface of the guide plate 91 below the lower end of the guide plate 91 and ascends along the outer surface of the shielding plate 71.

< third embodiment >

Fig. 18 is an explanatory view for explaining the gas flow path a of the outdoor unit 10 according to the third embodiment. In addition, the same portions as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The third embodiment forms the shielding portion 72 by bending the fire prevention plate 70, as compared with the first embodiment. This reduces the number of parts of the shielding portion 72, thereby reducing the cost.

Industrial applicability

The present invention can be applied to an outdoor unit of a separate type air conditioner.

Claims

1. An outdoor unit of air conditioner is composed of casing, compressor, heat exchanger, blower,

the outdoor unit of the air conditioner is characterized in that,

the refrigerant pipe connector comprises a pipe connecting part and a cover covering the pipe connecting part, wherein the pipe connecting part is arranged on one side surface of the box body and is connected with a refrigerant pipe,

the cover is: an engaging claw provided on an inner surface is inserted into a slit-shaped engaging hole formed in a side surface of the case and slid to be fixed to the case,

an annular outer circumferential rib disposed on a circumferential portion of the inner surface of the lid and abutting against the case, and a shielding rib protruding at the same height as the outer circumferential rib are formed, and the shielding rib surrounds the engagement hole when the lid is fixed.

2. The outdoor unit of an air conditioner according to claim 1, wherein a part of the shielding rib is formed by the outer circumferential rib.