JPH0416092Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cooling means for an electrical box provided in an outdoor unit of an air conditioner.

[Conventional technology]

FIG. 5 is a front view (partially cut away/cross-sectional view) of a cooling device for an outdoor unit in a conventional air conditioner disclosed in Japanese Patent Application Laid-Open No. 58-83166. In the figure, 1 is an outdoor unit, 2 is an internal heat exchanger chamber, and 3 is a compressor storage chamber, which are divided into adjacent units by a partition plate 4. A heat exchanger 5 and a blower 6 are provided in the heat exchanger chamber 2, a compressor 7 and an electrical box 8 are provided in the compressor storage chamber 3, and an inverter is provided in the electrical box 8. Heat generating parts (not shown) such as the following are housed. 9 is a unit support leg; 10 is a cooling air intake provided on one side of the electrical component box 8;
1 is a cooling air outlet opened on the opposite side, and the partition plate 4 has a ventilation hole 12 for sending air from the cooling air outlet 11 of the electrical equipment box 8 to the heat exchanger room 2. It is provided. 13
1 is a unit outer casing that forms the compressor storage chamber 3 inside, and an outside air intake 1 that communicates with the cooling air intake 10 of the electrical component box 8 is provided on the outer plate 13a.
4 have been established. Further, 15 is a bell mouth provided in the front of the outdoor unit 1.

(Operation) In the above configuration, by rotating the blower 6 installed opposite to the heat exchanger 5, the inside of the heat exchanger chamber 2 becomes negative pressure. the cooling air outlet 11 on the opposite side, the cooling air intake 10 on the opposite side, and the outside air intake 14 provided on the outer plate 13a of the unit outer casing 13.
The outside air flows into the heat exchanger room 2 as shown by the arrow in the figure, and is finally discharged to the outside of the outdoor unit 1 by the blower 6. was also configured to be forcedly cooled at the same time.

[Problem that the invention attempts to solve]

However, in the case of the conventional outdoor unit cooling system configured as described above, for example, when a head wind is blowing that is opposite to the wind from the blower 6 blown from the bell mouth 15 during operation, the air inside the outdoor unit 1 is Since the amount of air taken into the box 8 is reduced, there is a problem in that the interior of the electrical component box 8 is not sufficiently cooled.

This idea was devised to solve the above problems, and allows a sufficient amount of outside air to be taken into the electrical box even when a headwind is blowing in front of the outdoor unit. The purpose of the present invention is to provide an outdoor cooling unit of this type which also prevents rainwater from entering at that time.

[Means for solving problems]

Therefore, in this invention, a corner part is formed at one corner of the bell mouth disposed in front of the outdoor unit to partition the heat exchanger chamber and the outer periphery of the bell mouth. This objective is achieved by forming a cooling air discharge duct using the upper right corner.

[Effect]

As described above, by forming the cooling air discharge duct around the outer periphery of the bell mouth, even if a head wind blows against the front of the outer casing, the inside of the duct is under negative pressure, so the amount of cooling air intake remains unchanged, and the electrical equipment It becomes possible to cool the inside of the box.

〔Example〕

An embodiment of this invention will be described below based on the drawings.

(Structure) FIGS. 1 and 2 show a plan view and a front view (partially broken/cross-sectional view) of an embodiment of an outdoor unit according to this invention, respectively. Moreover, FIG. 3 is an enlarged front view of the main part of the bell mouth. Figure 1~
In FIG. 3, the same or equivalent components as in FIG. 5 of the conventional example are represented by the same reference numerals, and redundant explanation will be omitted. Reference numeral 16 represents a corner portion provided at the upper right corner of the bell mouth 15, reference numeral 17 represents a cooling air discharge duct formed by partitioning the outer periphery of the bell mouth 15 and the heat exchanger chamber 2, and reference numeral 20 represents a top plate.

(Operation) Therefore, in the outdoor unit cooling system of the present invention having the above-mentioned configuration, the back wind that is opposite to the wind generated by the operation of the blower 6 installed opposite to the heat exchanger 5 is directed toward the front of the unit outer casing 13. In this case, the amount of outside air taken into the outdoor unit 1 will be reduced due to the headwind.
The heat exchanger chamber 2 and the outer periphery of the bell mouth 15 are partitioned by the corner part 16 formed at the upper right corner of the unit, and the cooling air is Discharge duct 17
, so that the cooling air discharge duct 17 is prevented from being affected by head wind.

(Other Embodiments) In the above embodiment, the bell mouth 15 and the upper right corner portion 16 were formed into one piece, but for example, as shown in FIG. 4, an enlarged view of the main parts of the bell mouth of another embodiment,
It is obvious that the same effect as in the above embodiment can be obtained even if the triangular member 18 is attached to the upper right corner of the bell mouth 15 with a screw 19 or the like.

[Effect of idea]

As explained above based on the examples,
According to this invention, by forming an angular part in one corner of the bell mouth, a cooling discharge duct was formed between the heat exchanger room and the compressor storage room, so it was not affected by head winds. It has become possible to effectively cool the inside of the electrical equipment box.

[Brief explanation of the drawing]

Fig. 1 is a plan view of one embodiment of the outdoor unit of this invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is an enlarged view of the main part of the bell mouth of this invention, and Fig. 4 is another embodiment. FIG. 5 is a front view of an example of a conventional outdoor unit. 1... Outdoor unit, 2... Heat exchanger room, 3...
...Compressor storage room, 5...Heat exchanger, 6...Blower, 8...Electrical box, 13...Unit outer casing, 14...Outside air intake, 15...Bell mouth,
16... Corner part, 17... Cooling air discharge duct,
18... Triangular member, 20... Top plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an outdoor unit in which an electrical box containing heat-generating parts is provided in the compressor storage chamber, a corner part is formed in one corner of the bell mouth, and a corner part is formed between the unit outer case and the ceiling. 1. An outdoor unit cooling device for an air conditioner, characterized in that a cooling air discharge duct in the electrical component box is formed by the plate and the bellmouth corner. (2) The outdoor unit cooling device for an air conditioner according to claim 1, wherein the corner portion of the bell mouth is formed by attaching a triangular member to the corner portion.