KR20090069400A - Outdoor unit of air conditioner and a grille thereof - Google Patents

Abstract

An outdoor unit of an air-conditioner and a grill thereof are provided to minimize the flow resistance of air expelled through the vent by forming the connection frame connecting the main frame in the shape corresponding to the air flow direction. An outdoor unit of an air-conditioner comprises a plurality of main frames(12) arranged at certain intervals, and a connection frame(13,14) which connects a part or all of the main frames. The connection frame connects an intermediate panel(11), an inner frame(12a), an intermediate frame(12b), and an outer frame(12c). The connection frame is composed of straight lines, where each straight line forms a certain angle to the adjacent line.

Description

Outdoor unit of air conditioner and its grill

This embodiment relates to an outdoor unit of an air conditioner and its grill.

In general, an air conditioner is a device for cooling or heating an indoor space. The air conditioner includes an indoor unit installed indoors and an outdoor unit connected to the indoor unit and installed outdoors. Of course, the indoor unit and the outdoor unit may be integrally formed depending on the type of air conditioner.

The outdoor unit includes a case forming an external shape, a blower fan provided inside the case to generate air flow, and an outdoor heat exchanger provided to exchange heat between the air supplied into the case and the refrigerant inside the case. Is provided.

The case is provided with a suction port through which air is sucked in and a discharge port through which air is discharged. In addition, the discharge port is coupled to the grill to protect the blowing fan, and to prevent foreign matters from entering the blower fan side.

Here, the material and shape of the grill is closely related to the flow rate and noise of the air discharged through the discharge port, it is required to improve the structure of the grill to increase the flow rate of the air, the noise is reduced.

An object of the embodiment is to propose an outdoor unit and an grill thereof of an air conditioner, in which the flow rate of the air discharged through the discharge port is increased and the noise of the air is minimized.

In one embodiment, a grill of an outdoor unit of an air conditioner includes a grill of an outdoor unit coupled to a discharge port through which air blown by a blower fan is discharged, the main frame being spaced apart from each other; And a connection frame connecting some or all of the plurality of main frames, wherein the connection frame is rounded.

According to another aspect, a grill of an outdoor unit of an air conditioner includes: a grill of an outdoor unit coupled to a discharge port through which air blown by a blowing fan is discharged, the main frame being spaced apart from each other; And a connection frame connecting some or all of the plurality of main frames, wherein the connection frame is formed of a combination of a plurality of straight lines, and each of the straight lines is inclined at an angle with respect to the straight lines adjacent to each other.

According to yet another aspect, an outdoor unit of an air conditioner includes a case in which an inlet and an outlet are formed; A blowing fan provided inside the case to generate an air flow and having a plurality of blades; And a grill coupled to the discharge port, wherein the grill includes a connection frame extending round from the center side of the grill to the outside.

According to yet another aspect, an outdoor unit of an air conditioner includes a case in which an inlet and an outlet are formed; A blowing fan provided inside the case to generate an air flow and having a plurality of blades; And a grill coupled to the discharge port, wherein the grill includes a connecting frame extending outwardly from the center portion of the grill, wherein the connecting frame is formed in a shape corresponding to the trailing edge of the blade. It is done.

According to the proposed embodiment, as the connecting frame connecting the main frame is formed in a shape corresponding to the flow direction of the air, the flow resistance of the air is minimized, thereby increasing the air flow rate and reducing the flow noise of the air. Can be.

Hereinafter, an embodiment will be described with reference to the drawings.

1 is a perspective view of the grill is separated from the outdoor unit of the air conditioner according to the present embodiment.

Referring to FIG. 1, the outdoor unit 1 of the air conditioner according to the present embodiment includes a case 2 forming an external shape. The case 2 may be made of a combination of one or more members.

A suction port 4 through which outside air is sucked is formed at the side of the case 2. Although not shown in FIG. 1, a suction port 4 may be formed on the rear surface of the case 2. In addition, a discharge port 5 through which the air sucked through the suction port 4 is discharged is formed on the front surface of the case 2. The discharge port 5 is formed in a substantially circular shape.

In addition, a blower fan 5 is provided inside the case 2 to allow outside air to be sucked into the case 2 and to discharge the sucked air.

Of course, although not shown, the inside of the case 2 is provided with an outdoor heat exchanger to allow the sucked air and the refrigerant therein to flow. In addition, a grill 10 for protecting the blower fan 5 is coupled to the discharge port of the case 1. The grill 10 may be formed of steel or plastic material.

In this embodiment, the blowing fan 5, for example, an axial flow fan is used.

The blower fan 5 will be described in more detail.

The blowing fan 5 includes a hub 31 coupled to a rotating shaft of a motor (not shown) and a plurality of blades 32 extending outward from the hub 31. For example, the hub 31 may be formed in a cylindrical shape. However, it is noted that the shape of the hub 31 is not limited in this embodiment.

The blowing fan 5 is rotated clockwise as seen in FIG. 1. Here, the front end of the rotational direction of the blade 32 is defined as a leading edge 33, and the rear end of the rotational direction of the blade 32 is defined as a trailing edge 34.

Then, air flows along the positive pressure surface (front of the blade as seen in FIG. 1) of the blade 32 from the leading edge 33 to the trailing edge 34.

Hereinafter, the relationship between the air flow and the grill flowing by the blowing fan will be described.

2 is a view showing the flow of air discharged by the blowing fan in the air conditioner, Figure 3 is a front view of the grill according to the first embodiment.

First, referring to FIG. 2, when the blowing fan 3 is rotated, air flows by the blowing fan 3 and is discharged through the discharge port 5. It can be seen that the flow of air discharged through the discharge port 5 starts at the trailing edge 34 side of the blade 32 as shown in FIG. 2.

Here, that the flow of air starts at the trailing edge 34 side of the blade 32 means that the air is blown out at the trailing edge 34 side. That is, the air sucked in through the inlet 4 is blown outward from the trailing edge 34 side after being moved from the leading edge 33 of the blade 32 to the trailing edge 34 side.

In addition, it can be seen that the air is discharged while having a curvature substantially corresponding to the trailing edge 34. Here, "substantially" is meant to include the same curvature and the same but not the same curvature as the trailing edge 34.

A grill according to the present embodiment will be described with reference to the flow of air in FIG. 2.

2 and 3, in the grill 10 according to the present embodiment, the center panel 11 having a predetermined area, the center panel 11, and the outside of the center panel 11 are fixed. A plurality of main frames 12 are spaced apart at intervals, and connecting frames 13 and 14 connecting the main frames 12 are included.

In detail, when the grill 10 is coupled to the case 2, the center panel 11 is positioned to correspond to the hub 31. In addition, the center panel 11 is formed in a circular shape to shield the hub 31.

Here, since the flow rate of discharged air is small in the vicinity of the hub 31 of the blower fan 3, even if the center panel 11 shields the hub 31, there is no significant effect on the flow rate of air. In addition, the center panel 11 allows the rigidity of the grill 10 to be increased.

In the present embodiment, it is described that the middle panel 11 is provided on the grill 10. Alternatively, the middle panel 11 is not provided, and the grill 10 is connected to the main frame 12. Note that it may consist only of (13, 14).

The plurality of main frames 12 are formed in a ring shape having the same center and spaced apart from each other by a predetermined interval. Therefore, the air blown by the blowing fan 3 passes through the spaces between the plurality of main frames 12.

As described above, when the plurality of main frames 12 have the same center and are spaced apart from each other by a predetermined interval, the plurality of main frames 12 may easily become larger in diameter toward the outside from the center panel 11 side. You can guess. That is, the plurality of main frames 12 is a combination of a plurality of ring-shaped frames having different radii.

In the plurality of main frames 12, a frame adjacent to the center panel 11 may be referred to as an inner frame 12a, and a frame disposed at the outermost side (a frame located farthest from the center panel) The outer frame 12b may be referred to, and at least one frame disposed between the inner frame 12a and the outer frame 12b may be referred to as an intermediate frame 12c. In the present embodiment, a plurality of intermediate frames 12c are provided as shown in FIG. 3.

The connection frames 13 and 14 allow all or part of the plurality of main frames 12 to be connected. That is, since the plurality of main frames 12 are spaced apart from each other by a predetermined interval, the plurality of main frames 12 are connected by the connecting frames 13 and 14.

The connecting frames 13 and 14 include a plurality of first connecting frames 13 for connecting the middle panel 11, the inner frame 12a, the middle frame 12b, and the outer frame 12c to each other. do.

In addition, the connection frame 13, 14 is provided between the first connection frame 13 adjacent to each other, so that the second frame connected to the outer frame 12c and at least one intermediate frame 12b (14) is included. In addition, the second connection frame 14 serves to reinforce the strength of the grill 10.

The connecting frames 13 and 14 extend from the side of the middle panel 11 toward the outer frame 12c. The connecting frames 13 and 14 substantially correspond to the trailing edge 34 of the blade 32 in order to minimize the flow resistance of the air blown by the blowing fan 5 and to reduce the noise. Rounded to be curvature.

In detail, as shown in FIG. 2, air is discharged while having substantially the same curvature as the trailing edge 34 of the blade 32. Therefore, when the connecting frames 13 and 14 are formed in a shape corresponding to the flow curve of the air, the flow resistance of the air can be minimized.

And, when the flow resistance of the air is minimized, since the air can flow smoothly, the air volume of the air is increased, the flow noise of the air can be minimized.

When the connecting frames 13 and 14 are formed to be rounded, the remaining portions except for both ends of the connecting frames 13 and 14 are based on a virtual straight line connecting both ends of the connecting frames 13 and 14. It is placed only on one side.

Here, when the curvature of the connecting frame (13, 14) is smaller than the curvature of the trailing edge 34 of the blade 32, the connecting frame (13, 14) is closer to the straight shape because the flow resistance of air Will become large.

In addition, even when the curvature of the connecting frame (13, 14) is larger than the curvature of the leading edge 33 of the blade 32, the connecting frame (13, 14) acts as a resistance to increase the flow resistance of air You lose.

Therefore, the curvature of the connecting frames 13 and 14 of the present embodiment may be formed to be the same as or larger than the trailing edge 34 of the blade 32, rather than the curvature of the leading edge 33 of the blade 32. It is preferable to form small.

In the present exemplary embodiment, the center panel 11 and the main frame 12 are formed in a circular and ring shape. Alternatively, the center panel 11 and the main frame 12 may be formed in a rectangular shape. .

4 is a front view of a grill according to the second embodiment.

This embodiment is the same as the first embodiment in other parts, but differs in the shape of the connecting frame. Therefore, hereinafter, only the characteristic parts of the present embodiment will be described, and the same parts as the first embodiment will use the first embodiment.

4, the first connecting frame 15 and the second connecting frame 16 according to the present embodiment is composed of a combination of a plurality of straight lines.

In detail, the connecting frames 15, 16 extend from the inner frame side toward the outer frame side. In addition, the connecting frames 15 and 16 have a plurality of straight lines sequentially connected to each other to form a shape substantially corresponding to the trailing edge 34 of the blade 32.

Accordingly, when the straight lines constituting the connecting frames 15 and 16 are smoothly connected, the connecting frame is formed in a shape substantially corresponding to the trailing edge 34 of the blade 32.

Referring to the first connecting frame 15 by way of example, at the end of the first straight line L1 constituting the first connecting frame 15, a second straight line L2 is formed with respect to the first straight line L1. It is formed to be inclined at an angle in one direction. In addition, a third straight line L3 is formed at an end of the second straight line L2 to be inclined at a predetermined angle with respect to the first straight line L2.

That is, the remaining straight lines except for the first straight line L1 are formed to be inclined only in one direction with respect to the first straight line L1.

1 is a perspective view of a state in which a grill is separated from an outdoor unit of an air conditioner according to a first embodiment.

2 is a view showing the flow of air discharged by the blowing fan in the air conditioner.

3 is a front view of the grill according to the first embodiment;

4 is a front view of the grill according to the second embodiment;

Claims (9)

In the grill of the outdoor unit coupled to the discharge port through which the air blown by the blowing fan is discharged, A plurality of main frames spaced apart from each other; And Includes a connection frame for connecting a part or all of the plurality of main frame, The connecting frame is a grill of the outdoor unit of the air conditioner, characterized in that formed round. In the grill of the outdoor unit coupled to the discharge port through which the air blown by the blowing fan is discharged, A plurality of main frames spaced apart from each other; And Includes a connection frame for connecting some or all of the plurality of main frames, The connecting frame is made of a combination of a plurality of straight lines, each straight line grille of the outdoor unit of the air conditioner, characterized in that the inclined at an angle with respect to the adjacent straight line. The method according to claim 1 or 2, The connecting frame is a grill of the air conditioner outdoor unit is formed in a shape corresponding to the trailing edge (trailing edge) of the blade of the blowing fan. The method according to claim 1 or 2, In the main frame, An inner frame, an outer frame, and one or more intermediate frames provided between the inner frame and the outer frame, In the connecting frame, And a first connection frame connecting the inner frame, the middle frame, and the inner frame. The method of claim 4, wherein The connecting frame And a second connection frame connecting the outer frame and the at least one intermediate frame. A case in which a suction port and a discharge port are formed; A blowing fan provided inside the case to generate an air flow and having a plurality of blades; And A grill coupled to the discharge port is included, The outdoor unit of the air conditioner, the grill includes a connecting frame extending rounded outward from the central portion side of the grill. The method of claim 6, Curvature of the connecting frame is Equal to or greater than the curvature of the trailing edge of the blade, And the curvature of the leading edge of the blade is smaller than the outdoor unit of the air conditioner. The method of claim 6, The grille includes a plurality of main frames, The main frames have the same center, are formed spaced apart from each other, The connecting frame is an outdoor unit of an air conditioner, so that some or all of the plurality of main frames are connected. A case in which a suction port and a discharge port are formed; A blowing fan provided inside the case to generate an air flow and having a plurality of blades; And A grill coupled to the discharge port is included, The grille includes a connecting frame extending outward from the center side of the grille, The connecting frame is an outdoor unit of the air conditioner is formed in a shape corresponding to the trailing edge of the blade.

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