JP3206348B2 - Outdoor unit of air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit for an air conditioner.

[0002]

2. Description of the Related Art In an electrical component box of an outdoor unit of an air conditioner, priority is given to an arrangement of a reactor that generates a large amount of heat among electrical components. For this reason, the arrangement of other electrical components and other devices in the casing is restricted, which has been an obstacle to downsizing the outdoor unit.

In order to solve this problem, an outdoor unit of an air conditioner described in Japanese Patent Application Laid-Open No. Hei 6-281203 can be mentioned. FIG. 7 is a perspective view showing a part of a main part of the outdoor unit, which is cut away. In this outdoor unit, when the fan 36 operates, a part of the inflow air reaching the heat exchanger 35 flows below the heat exchanger 35 and passes through the bypass passage 41, and then the partition wall 39 and the cover 38 First opening 4 of reactor storage space formed by
2 is guided by the cooling air guide 40. Then, the inflow air whose flow has changed upward thereafter collides with the reactor 37 and effectively cools it. After cooling, the air flows out of the second opening 43 between the storage chambers and is blown out of the casing together with the air that has passed through the heat exchanger 35. In FIG. 7, reference numeral 44 denotes a relay harness for the reactor 37, and reference numeral 45 denotes an opening for passing the harness.

[0004] In the outdoor unit of the air conditioner as described above, since the reactor 37 is arranged separately from other electric components,
Restrictions on the arrangement of other electrical components and devices in the casing are relaxed, and the outdoor unit can be made more compact.

[0005]

Generally, in an outdoor unit of an air conditioner, rainwater or the like enters from an outlet opening in front of a fan through an outlet grill or from behind and a side of a casing through a heat exchanger. Therefore, in the outdoor unit in the above-described conventional example, it is necessary to install the cover 38 in order to prevent the reactor 37 from being wetted by the water spray. Further, the cover 38 prevents air that has passed through the heat exchanger 35 and has become higher than the outside air temperature from directly colliding with the reactor 37 when cooling is used, thereby preventing the cooling effect from being reduced. Was also needed. for that reason,
In the conventional example, there is a problem that the number of components increases due to the downsizing of the outdoor unit, which causes a cost increase.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and has as its object to reduce the size of an outdoor unit by disposing a reactor separately from other electric components. An object of the present invention is to provide an outdoor unit of an air conditioner that can perform waterproofing and cooling of a reactor without using a separate member such as a cover, thereby reducing costs.

[0007]

The outdoor unit of the air conditioner according to the first aspect of the present invention has a partition plate 4 inside the casing 1 for a blower room 10 having a fan 3 and a heat exchanger 2 and a machine room 11. In the outdoor unit of the divided air conditioner, a reactor 5 is mounted on the machine room 11 side near the upper end of the partition plate 4, and a ventilation path 6 for communicating the machine room 11 with the blower room 10.
And the ventilation passage 6 is provided with the
A heat absorbing passage 7 extending along the back is provided, and a machine room side opening 6 a of the ventilation passage 6 is provided near the upper portion of the reactor 5.

[0008] The outdoor unit of an air conditioner according to claim 2, fan 3 and the blower chamber 10 and a heat exchanger 2, the outdoor air conditioner partitioned by the machine room 11 and the partition plate 4 in the casing 1 to the In the machine, a reactor 5 is mounted on the side of the ventilation chamber 10 near the upper end of the partition plate 4, and a ventilation path 6 for communicating the machine room 11 with the ventilation chamber 10 is provided, and an opening of the ventilation path 6 on the ventilation chamber side is provided. 6b is provided near the upper part of the reactor 5.

[0009]

In the outdoor unit of the air conditioner of the first aspect, the reactor 5 is mounted on the machine room 11 near the upper end of the partition plate 4, and the machine room side opening 6a of the ventilation passage 6 is provided near the upper portion of the reactor 5. Is provided. Therefore, the water spray from the outside that enters the air blower chamber 10 can be shielded by the partition plate 4 to reliably prevent the reactor 5 from getting wet, so that a separate member such as a cover can be omitted. Further, the warm air generated from the reactor 5 and rising can be effectively removed from the vicinity of the reactor 5 by the airflow passing through the ventilation path 6 generated by the fan 3, thereby efficiently cooling the reactor 5. It is possible to do. Also, the ventilation path
6 has a heat absorbing passage 7 extending along the back of the reactor 5
By doing so, the cooling efficiency of reactor 5 is further improved.
It becomes possible.

In the outdoor unit of the air conditioner according to the second aspect, the reactor 5 is mounted on the side of the ventilation chamber 10 near the upper end of the partition plate 4, and the opening 6b of the ventilation path 6 on the ventilation path 6 is formed near the upper part of the reactor 5. Provided. Accordingly, since water can be prevented from being sprayed from above and below the casing 1 in the front-rear direction or the lateral direction, the reactor 5 can be prevented from getting wet, so that a separate member such as a cover can be omitted. Further, the warm air generated from the reactor 5 and rising can be effectively removed from the vicinity of the reactor 5 by the airflow generated by the fan 3 and passing through the ventilation path 6, thereby efficiently cooling the reactor 5. It is possible to do well.

[0011]

Next, a specific embodiment of the outdoor unit of the air conditioner of the present invention will be described in detail with reference to the drawings.

(First Embodiment) FIG. 4 is a central cross-sectional view showing a first embodiment of the outdoor unit of the air conditioner of the present invention. Inside the casing 1 is a partition plate 4
Air blower room 10 having fan 3, heat exchanger 2, etc.
And a machine room 11 having a compressor, an accumulator and the like (not shown). Further, in front of the fan 3, an air passage 8 is formed by a bell mouth 21 provided by connecting the partition plate 4 and a part of the casing 1, and a blowout grill 22 is attached from the front.

FIG. 3 is an exploded perspective view of the outdoor unit.
As shown in the figure, the casing 1 comprises a front plate 23, a side plate 2
4, the top plate 25 and the bottom frame 26. The bell mouth 21 is provided in the front opening 29 of the front plate 23.
And the outlet grill 22 are attached from the front. Front plate 2
A plurality of ventilation holes 28 are provided in a portion of the casing 3 located on the side surface of the casing 1 from its upper end to its lower end. Further, as shown in FIG. 4, the inside of the casing 1 is divided into a blower room 10 and a machine room 11 by a partition plate 4,
The reactor 5 is attached to the machine room 11 on the upper end side of the partition plate 4. In FIG. 3, reference numeral 27 denotes an electrical component box, and a compressor, an accumulator, and the like disposed in the machine room 11 are omitted to avoid complicating the drawing and to facilitate understanding.

FIG. 1 is an enlarged view of a main part of a partition plate 4 showing a mounting portion of the reactor 5, (a) is a perspective view, and (b).
FIG. 3 is a sectional view taken along line AA ′ of FIG. FIGS. 2A and 2B are views showing a mounting structure formed on the partition plate 4 for mounting the reactor 5, wherein FIG. 2A is a plan view as viewed from the side where the reactor 5 is mounted, and FIG. B- shown
It is sectional drawing in B '. As shown in these figures,
At the reactor 5 mounting position on the partition plate 4, a reactor mounting surface 12 having a periphery slightly larger than the quadrangular reactor mounting plate 5a protrudes slightly forward (toward the machine room (11)) from the partition plate 4. It is formed as follows. When the reactor 5 is mounted, the lateral pressing pieces 13, 1 and 2 support the reactor mounting plate 5 a from both sides while restricting the left and right positions thereof.
3 are provided. Further, when the reactor mounting plate 5a is inserted into the side holding pieces 13 and 13 from above at the lower end portion of the reactor mounting surface 12 while sliding the reactor mounting plate 5a from above, the lower position is regulated to stop the slide, and the slide is stopped. Lower holding piece 1 that holds down and supports reactor mounting plate 5a
4 are provided. In these side holding pieces 13 and 13 and the lower holding piece 14, gaps 13a and 14a corresponding to the thickness thereof are formed in order to insert the reactor mounting plate 5a, but at the upper end portions 13b and 14b. These gaps 13a, 14a are formed such that their width becomes wider toward the upper end, and the reactor mounting plate 5
a can be easily inserted.

Further, as shown in FIGS. 2A and 2B, the reactor mounting surface 12 has a B
The recess 15 is provided to extend in the vertical direction along -B '. The recessed portion 15 has a semicircular cross section and is located above the upper end of the reactor mounting surface 12, and a recessed lower end opening which opens toward the blower chamber 10 at the center of the reactor mounting surface 12. 15b. Then, the reactor 5 is mounted from the machine mounting 11 side of the reactor mounting surface 12 using the side holding pieces 13 and 13 and the lower holding piece 14 as described above, and the screw 16 and the screw hole 1 are attached.
7, the recess 15 becomes the ventilation path 6, and the upper end 15 a of the ventilation chamber 6 has the machine room side opening 6 a of the ventilation path 6, as shown in FIGS. 1 (a) and 1 (b). The lower end opening 15b of the recessed portion becomes the opening 6b of the ventilation passage 6 on the side of the ventilation chamber. Then, a portion surrounded by the back surface of the reactor 5 (on the side of the blower chamber 10) and the recess 15 forms the heat absorption passage 7. That is, the ventilation passage 6 is formed by the machine room side opening 6a, the heat absorption passage 7, and the blower room side opening 6b.

The outdoor unit configured as described above operates as follows. That is, when the fan 3 operates, the inside of the blower chamber 10 becomes a negative pressure, and the outside air is sucked from the rear of the casing 1 and the side through the ventilation hole 28. Then, the sucked air is heat-exchanged by the heat exchanger 2 and is discharged to the outside again through the air passage 8 provided on the front surface of the casing 1. Since the inside of the blower chamber 10 is under a negative pressure due to the operation of the fan 3 as described above, the mechanical chamber 1
The air inside 1 is also sucked into the ventilation chamber 10 through the ventilation passage 6. Therefore, the heat absorbing passage 7 on the rear surface of the reactor 5 extends from the machine room side opening 6 a of the ventilation passage 6 provided near the upper end of the reactor 5.
, An airflow reaching the ventilation chamber side opening 6b of the ventilation path 6 is formed. Since the reactor 5 generates heat with the operation of the outdoor unit, it is necessary to cool the reactor 5 as described above. However, the warm air generated from the reactor 5 and rising by the airflow is removed from the vicinity of the reactor 5. Further, since the heat of the reactor 5 can be absorbed from the back surface by the airflow passing through the heat absorbing passage 7, the cooling can be effectively performed.

During the cooling operation of the outdoor unit, the air exchanged by the heat exchanger 2 has a higher temperature than the outside air temperature. However, the reactor 5 is provided on the machine room 11 side, and the machine room 11 is
And the heat exchanged air is Bellmouth 2
The air is discharged to the outside of the casing 1 through the air passage 8 formed by the air passage 1. Therefore, air having a temperature higher than the outside air temperature can be generated without using a special cover or the like.
Is avoided, thereby improving the cooling efficiency.

As described above, the heat exchanger 2 is exposed on the rear surface of the casing 1 and the ventilation holes 28 are provided on the side surfaces. Therefore, rainwater or the like may enter from these and the air passage 8 on the front side of the casing 1 to cause intrusion of water droplets. However, this water spray is generated in the blowing chamber 10 as is clear from the route. Since the reactor 5 in this outdoor unit is disposed in the machine room 11 and is shielded from the blower room 10 by the partition plate 4, the reactor 5 can be prevented from being wet by water spray or the like without using a special waterproof cover or the like. Can be prevented. Also,
Even if water drops enter the machine room 11 side,
Since the reactor 5 is disposed immediately below the top plate 25, it is possible to reliably prevent water from being wet by falling water droplets. Further, the ventilation path 6 is provided so as to extend vertically as shown in FIG. 1B, and the ventilation chamber side opening 6b is opened downward. Therefore, it is possible to prevent water spray from the ventilation chamber 10 side to the machine room 11 which is generated through the ventilation passage 6, and it is possible to more reliably waterproof the reactor 5.

Second Embodiment FIG. 5 shows a reactor 5 in a second embodiment of the outdoor unit.
FIG. 3 is an enlarged view of a main part of a partition plate 4 showing a mounting portion of FIG.
Is a perspective view, and (b) is a cross-sectional view taken along the line CC ′ shown in FIG. In the above-described first embodiment, the reactor 5 is arranged from the machine room 11 side of the partition plate 4, but in the second embodiment, the reactor 5 is arranged from the blower chamber 10 side of the partition plate 4 at the same position. ing. Then, except that the opening of the ventilation path 6 provided near the upper part of the reactor 5 becomes the ventilation chamber side opening 6b, and the one opening above the ventilation path 6 on the back side of the reactor 5 becomes the machine chamber side opening 6a. First
The configuration is the same as that of the embodiment.

In the outdoor unit configured as described above, the inside of the blower chamber 10 has a negative pressure when the fan 3 is operating.
An airflow that leads to Therefore, the cooling of the reactor 5 can be performed effectively. In addition, since the water spray into the casing 1 is mainly generated by rainwater or the like, the water enters the casing 1 from above. However, since the reactor 5 is disposed near the upper end of the partition plate 4, that is, directly below the top plate 25,
It is possible to avoid the above-mentioned water spray, and also it is possible to avoid water drops that enter the air blower chamber 10 and fall.
Therefore, also in this embodiment, it is possible to prevent the reactor 5 from being wet by water or the like without using a special waterproof cover or the like. Further, in this embodiment, the position where the reactor 5 is disposed is a position where no other device or component or the like is disposed in the casing 1 conventionally, and an empty space formed due to the installation of the fan 3 therebelow. Space. Therefore, by arranging the reactor 5 at this position, the outdoor unit can be made more compact. In this embodiment, the cooling of the reactor 5 is performed as follows.
Since the air passage in the ventilation chamber 10 may be used in some cases, the ventilation passage 6 may be omitted. However, when the ventilation passage 6 is provided, the cooling effect is further improved.

Although the specific embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be implemented with various modifications within the scope of the present invention. For example, in the first or second embodiment,
The reactor 5 is arranged in a portion of the partition plate 4 provided behind the front plate 23 along the front plate 23. This is arranged in a portion provided along the side plate 24 as shown in FIG. Unlike the above embodiment, the present invention can be widely applied to an outdoor unit of a type using a partition plate 31 having no portion provided along the front plate 23.

[0022]

According to the outdoor unit of the air conditioner of the first aspect, the reactor is mounted on the machine room side near the upper end of the partition plate, and an opening of the ventilation passage is provided near the upper portion of the reactor. . Therefore, the water spray from the outside that enters the air blowing chamber can be shielded by the partition plate, and the wetness of the reactor can be reliably prevented, so that a separate member such as a cover can be omitted. In addition, the airflow generated by the fan and passing through the ventilation path can effectively remove the rising warm air generated from the reactor from the vicinity of the reactor, thereby enabling the reactor to be cooled efficiently. Become. Thus, it is possible to obtain an outdoor unit that is compact and can be reduced in cost. In addition, the ventilation path extends along the back of the reactor.
By having a building endothermic passage, the cooling efficiency of the reactor
The rate can be further improved.

[0023] In the outdoor unit of an air conditioner according to claim 2, attached to the reactor to blast chamber side of the vicinity of an upper end portion of the partition plate is provided with a blower chamber side opening of the ventilation path in the vicinity of the upper part of the reactor. Accordingly, it is possible to prevent water from being sprayed from above and in the front and rear or side directions of the casing to prevent the reactor from getting wet, so that a separate member such as a cover can be omitted. In addition, the warm air generated from the reactor and rising by the air flow passing through the ventilation path generated by the fan,
It can be effectively removed from the vicinity of the reactor, whereby the reactor can be efficiently cooled. Thus, it is possible to obtain an outdoor unit that is compact and can be reduced in cost.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a main part showing a reactor mounting portion of an outdoor unit of an air conditioner according to a first embodiment of the present invention;
(A) is a perspective view, (b) is AA 'sectional drawing.

FIGS. 2A and 2B are enlarged views of a main part of a partition plate in the outdoor unit, wherein FIG. 2A is a plan view and FIG.

FIG. 3 is an exploded perspective view of the outdoor unit.

FIG. 4 is a central cross-sectional view of the outdoor unit.

FIG. 5 is an enlarged view of a main part showing a reactor mounting portion of an outdoor unit of an air conditioner according to a second embodiment of the present invention;
(A) is a perspective view, (b) is CC 'sectional drawing.

FIG. 6 is an exploded perspective view showing a modification of the outdoor unit.

FIG. 7 is a perspective view of an essential part showing an outdoor unit of an air conditioner in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Heat exchanger 3 Fan 4 Partition plate 5 Reactor 6 Ventilation path 7 Heat absorption path 10 Ventilation room 11 Machine room

────────────────────────────────────────────────── ─── Continuation of the front page (72) Norihide Kobo, inventor, No. 1000, Oya, Okamotocho, Kusatsu-shi, Shiga Prefecture Daikin Industries, Ltd. Shiga Works (56) References JP-A-3-152324 (JP, A) JP-A-6-59728 (JP, U) JP-A 2-70133 (JP, U) JP-A-63-153034 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 5/00

Claims (2)

(57) [Claims] An air conditioner in which a casing (1) is partitioned by a partition plate (4) into a blower chamber (10) having a fan (3) and a heat exchanger (2), and a machine room (11). In the outdoor unit of (1), a reactor (5) is mounted on the machine room (11) side near the upper end of the partition plate (4), and a ventilation path (6) for communicating the machine room (11) with the blower room (10). ), And the ventilation passage (6) is provided with the attached reactor.
(5) Air having a heat absorbing passage (7) extending along the back of the reactor (5), wherein a machine room side opening (6a) of the ventilation passage (6) is provided near an upper portion of the reactor (5). An outdoor unit of a harmonic machine. 2. An air conditioner having a casing (1) partitioned by a partition plate (4) into a blower chamber (10) having a fan (3) and a heat exchanger (2), and a machine room (11). In the outdoor unit of (1), a reactor (5) is mounted on the side of the ventilation chamber (10) near the upper end of the partition plate (4), and a ventilation path (6) for communicating the machine room (11) with the ventilation chamber (10). ), And an opening (6b) of the ventilation path (6) on the side of the ventilation chamber is provided near the upper part of the reactor (5).