JP2006214690A - Outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit for an air conditioner improved in air supplying performance of a heat exchanging chamber. <P>SOLUTION: In this outdoor unit for the air conditioner where the heat exchanging chamber 5 comprising a heat exchanger 3 and an air supply fan 4 is formed by mounting a partitioning plate 2 inside of a housing 1, and a bell-mouth 9 is mounted on a supply opening 8 of the heat exchanging chamber 5, a projecting portion 2a vertically extending, is formed near the bell-mouth of the partitioning plate 2 to deflect the air flow moving along the partitioning plate 2 to the bell-mouth 9. As the air flow in the heat exchanging chamber hardly enters into a clearance 11 formed between the bell-mouth 9 and the partitioning plate 2 in this constitution, vortex flow is not generated in the clearance 11, thus the noise can be reduced, and the air supplying performance of the heat exchanging chamber 5 can be improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to a structure for improving the blowing performance of a heat exchange chamber formed by providing a partition plate inside a casing.

As an outdoor unit of an air conditioner, for example, there are those shown in FIGS. 8 and 9A.
FIG. 8 and FIG. 9 (A) both show the internal structure of the outdoor unit from the top. The former is a heat provided with a heat exchanger 3 and a blower fan 4 by the partition plate 2 inside the housing 1. The exchange chamber 5 is partitioned into a compressor 6 and a machine room 7 having an electrical component box (not shown), and a bell mouth 9 is provided at the outlet 8 of the heat exchange chamber 5. The latter shown in FIG. 9 (A) divides the interior of the housing 1 up and down by a partition plate 2, and forms a heat exchange chamber 5 having a heat exchanger 3 and a blower fan 4 at the upper part thereof. 8 is provided with a bell mouth 9, and a machine room (not shown) is formed in the lower part (see, for example, Patent Document 1).

  By the way, in the thing of the said structure, both the former and the latter are introduce | transduced from the suction inlet 10, and a part of air flow which goes to the blower outlet 8 through the heat exchanger 3 is the space | gap (it is also called eddy current generation space on the back side of the bellmouth 9). ) And the vortex 12 is generated to increase noise, and the air volume to the outlet 8 is reduced.

  Therefore, conventionally, as shown in FIG. 9B, a proposal for changing the air flow by applying the stuffing 13 to the vortex generating space 11 on the back side of the bell mouth 9 has been disclosed. There was a problem of requiring labor and materials.

Japanese Utility Model Publication No. 57-116000 (first page, FIG. 2, FIG. 4)

  Accordingly, an object of the present invention is to provide an outdoor unit for an air conditioner that can improve the air blowing performance of a heat exchange chamber without using a material such as padding and without taking time and effort.

  The present invention has been made to solve the above-described problems. A partition plate is provided inside the housing to form a heat exchange chamber including a heat exchanger and a blower fan. In the case where a bell mouth is provided at the outlet, a convex portion is provided near the bell mouth of the partition plate so as to deflect the air flow on the surface of the partition plate toward the bell mouth.

  The height of the convex portion is a height that deflects the air flow on the surface of the partition plate to the bell mouth.

  The convex portion is provided near the tip of the curl portion when the distance between the tip of the curl portion of the bell mouth and the partition plate is short, and is provided at a position farther away from the tip of the curl portion than the tip of the curl portion. It becomes the composition which becomes.

  In the case of the outdoor unit of an air conditioner having the configuration of the present invention, the air flow traveling along the partition plate is deflected to the bell mouth side by the convex portion formed to project at a predetermined position of the partition plate. Even if no padding is applied to the back side of the mouse, there is no fear of eddy currents generated there, and an outdoor unit with reduced noise and improved air blowing performance in the heat exchange chamber can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  In FIG. 1, (A) shows a schematic configuration of an outdoor unit of an air conditioner from the top surface, (B) shows an enlarged view of a main part according to the present invention, and 1 is a casing of the outdoor unit. . The interior of the housing 1 is partitioned by a partition plate 2 into a heat exchange chamber 5 having a heat exchanger 3 and a blower fan 4 and a machine room 7 having a compressor 6 and an electrical component box not shown. A bell mouth 9 is formed at the outlet 8 of the heat exchange chamber 5.

  Reference numeral 2a denotes a protrusion protruding from the partition plate 2 and has a shape extending in the vertical direction. The height from the surface of the partition plate 2 is as shown in FIG. When the distance between the curl tip 9a and the partition plate 2 is T, the distance is approximately T / 2, and the curl tip 9a of the bell mouth 9 is provided near the curl tip 9a (windward side).

  In the outdoor unit configured as described above, the air flow traveling along the partition plate 2 is deflected to the bell mouth 9 side by the convex portion 2a, so that no padding or the like is applied to the back side of the bell mouth 9. Therefore, no vortex is generated, noise is reduced, and the air blowing performance in the heat exchange chamber 5 is further improved.

  FIG. 2 shows the second embodiment from the front side, and the difference from the former is the form of a convex portion 2 a formed to protrude from the partition plate 2. The convex portion 2a has a height T / 2 which is substantially the same as that of the former in the central portion where the distance T between the curled tip 9a of the bell mouth 9 and the partition plate 2 is short. In the upper and lower directions where the distance T from the partition plate 2 is increased, the height of the convex portion 2a is slightly increased. With such a configuration, the air flow traveling along the upper and lower portions of the partition plate 2 can be deflected more toward the bell mouth 9 side, and the air blowing performance is further improved.

  FIG. 3 shows a side view of the main part form of the third embodiment. The feature is that the convex part is located where the distance between the curl tip 9a of the bell mouth 9 and the partition plate 2 is short in the depth direction. 2a is provided in the vicinity of the curled portion tip 9a, and in a far place, it is provided in a position away from the curled portion tip 9a. If it is such a form, almost the same as the former (form of FIG. 2), the air flow which advances along the upper part and the lower part of the partition plate 2 can be deflected more to the bellmouth 9 side, and ventilation performance It will be possible to improve.

  FIG. 4 shows the main part form of the fourth embodiment from the side, and its feature is that the convex part is located where the distance between the curl tip 9a of the bell mouth 9 and the partition plate 2 is short in the depth direction. 2a is provided in the vicinity of the curled tip 9a, and the convex portion 2a is gradually extended away from the curled tip 9a as the distance increases. If it is such a form, the air flow which advances along the upper part and the lower part of the partition plate 2 can be deflected more to the bell mouth 9 side almost like the second and third forms, and the air blowing performance It will be possible to improve.

  FIG. 5 shows a fifth embodiment. In this outdoor unit, a blower fan 4 and two bell mouths 9 corresponding to these are provided above and below the heat exchange chamber 5, respectively. Are provided with two convex portions 2a corresponding to the upper and lower bell mouths 9, respectively, and more air flow traveling along the upper and lower portions of the partition plate 2 can be deflected to the bell mouth 9 side. The ventilation performance of the exchange chamber 5 is improved.

FIGS. 6 and 7 illustrate the results of comparison between the outdoor unit configured as shown in FIG. 5 (the machine adopting the present invention) and the conventional unit in which the partition plate 2 is not provided with the convex portion 2a. Is.
Although FIG. 6 shows the relationship between the rotational speed of the blower fan 4 and the air volume, it can be seen that the air volume increases at any rotational speed of the machine adopting the present invention as compared with the conventional machine.
Further, FIG. 7 shows the relationship between the air volume and the noise, but it can be seen that the noise is improved in the machine adopting the present invention as the air volume increases as compared with the conventional machine. As can be seen from these comparison data, the outdoor unit employing the present invention can reduce noise and improve air blowing performance.

(A) is sectional drawing which shows the 1st Embodiment of this invention, (B) is the principal part enlarged view. It is a front view which shows the 2nd Embodiment of this invention. It is principal part side sectional drawing which shows the 3rd Embodiment of this invention. It is principal part side sectional drawing which shows the 4th Embodiment of this invention. It is a three-dimensional perspective view which shows the 5th Embodiment of this invention. It is a rotation speed-air volume characteristic diagram in a machine adopting the present invention and a conventional machine. It is an air volume-noise characteristic diagram in the machine adopting the present invention and the conventional machine. It is sectional drawing of the outdoor unit of the air conditioner which shows a prior art example. It is the outdoor unit of the air conditioner which shows another conventional example, (A) is sectional drawing before improvement, (B) is the principal part enlarged view after improvement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Partition plate 2a Convex part 3 Heat exchanger 4 Blower fan 4a Fan motor 5 Heat exchange chamber 6 Compressor 7 Machine room 8 Air outlet 9 Bell mouth 9a Curl part tip 10 Suction port 11 Air gap (vortex flow generation space)
12 Eddy current

Claims (3)

  A partition plate is provided inside the housing to form a heat exchange chamber having a heat exchanger and a blower fan, and a bell mouth is provided at the outlet of the heat exchange chamber. An outdoor unit of an air conditioner, characterized in that a convex portion is provided near the mouse.   The outdoor unit of an air conditioner according to claim 1, wherein the height of the convex portion is a height that deflects the air flow on the surface of the partition plate toward the bell mouth.   The convex portion is provided near the front end of the curl portion when the distance between the front end of the curl portion of the bell mouth and the partition plate is short, and is provided at a position away from the front end of the curl portion in the depth direction. Item 3. An outdoor unit for an air conditioner according to item 1 or 2.