KR101234889B1

KR101234889B1 - Bell Mouse of Refrigerator

Info

Publication number: KR101234889B1
Application number: KR20100067237A
Authority: KR
Inventors: 현석호; 이창익
Original assignee: 위니아만도 주식회사
Priority date: 2010-07-13
Filing date: 2010-07-13
Publication date: 2013-02-19
Also published as: KR20120006656A

Abstract

The present invention relates to a refrigerator, and in particular, includes a centrifugal fan for introducing cold air and discharging cold air in the circumferential direction, and a bell mouse for guiding the cold air introduced into the centrifugal fan, wherein the bell mouse has a rounded end section. It relates to a refrigerator characterized by the shape.

Description

Bell Mouse of Refrigerator

The present invention relates to a refrigerator provided with a bell mouse.

The conventional refrigerator includes a storage compartment formed inside the main body, an inner side plate provided at the rear of the storage compartment, an outer side plate formed at the rear of the inner side plate to form a cold air duct through which cold air circulates, and an inlet formed in the outer side plate. And a centrifugal fan for introducing cold air to discharge cold air in the circumferential direction, and an outlet for discharging cold air passing through the centrifugal fan.

Such a conventional refrigerator has a problem in that when the area of the inlet is not sufficient due to the limitation of the shape of the refrigerator, a wide range of cold air backflow occurs at the inlet and a pressure loss at the outlet causes a decrease in the efficiency of the centrifugal fan. do.

Korean Patent Registration Publication No. 10-584269

The present invention has been made to solve the above-described problem, to increase the efficiency of the centrifugal fan and minimize the pressure loss.

The refrigerator of the present invention for achieving the above object includes a centrifugal fan for introducing cold air to discharge cold air in the circumferential direction, and a bell mouse for guiding the cold air introduced into the centrifugal fan.

The bell mouse is characterized in that the cross section of the end has a round shape.

According to the refrigerator of the present invention as described above, there are the following effects.

Including the round cross section of the end of the bell mouse, it is possible to minimize the pressure loss, thereby increasing the efficiency of the centrifugal fan.

1 is a cross-sectional view of a refrigerator installed with a bell mouse according to a preferred embodiment of the present invention.
2 is a cross-sectional view of the bell mouse and the centrifugal fan of FIG.
3 is a flow distribution diagram of FIG.
4 is an enlarged view of FIG. 3.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, the same components as those of the conventional art will be described with reference to the above-described prior art, and a detailed description thereof will be omitted.

1 is a cross-sectional view of a refrigerator equipped with a bell mouse according to a preferred embodiment of the present invention, FIG. 2 is a cross-sectional view of the bell mouse and a centrifugal fan of FIG. 1, FIG. 3 is a flow distribution diagram of FIG. 2, and FIG. 4 is FIG. 3. An enlarged view of.

As shown in FIG. 2, the refrigerator of the present invention includes a centrifugal fan 5 for introducing cold air and discharging cold air in a circumferential direction, and a bell mouse 9 for guiding cold air introduced into the centrifugal fan 5. It includes.

The bell mouse 9 is characterized in that the cross section of the end is round shape.

As shown in FIG. 1, the refrigerator of the present invention includes a storage compartment 2 formed inside the main body 1, an inner side plate 3 provided at the rear of the storage compartment 2, and the inner side plate 3. An outer plate 4 installed at a rear side of the cold air duct to form cold air ducts, a centrifugal fan 5 for introducing cold air passing through the cold air ducts and discharging it in the circumferential direction, and the cold air introduced therein; 5) it comprises a bell mouse (9) to guide the flow into.

The inner plate 3 forms a discharge port (not shown) through which cold air is discharged.

In the upper part of the outer side plate 4, the centrifugal fan 5 and the motor 8 are provided.

[Centrifugal fan]

The centrifugal fan 5 has a base 6 coupled to the rotation shaft 80 of the motor 8 and cold air introduced to the center side of the base 6 by being spaced apart along the circumferential direction of the base 6. It includes a rotary blade (7) for guiding radially.

The base 6 includes a base 6 and a disc 65.

The base 6 is formed at the center of the base 6, and is coupled to the rotation shaft 80 of the motor 8.

The base 6 includes a protrusion 61 and a hub shaft 62.

The protruding portion 61 is formed at the center of the base 6, and the height thereof increases toward the center of the base 6.

The hub shaft 62 is the same as the central shaft of the base 6 and is formed inside the protrusion 61 and is coupled to the rotation shaft 80 of the motor 8.

In the outer diameter of the base 6, a disc portion 65 of a flat plate structure is integrally formed.

The disc portion 65 is formed in a flat plate structure having an outer diameter and an inner diameter.

Rotating blades 7 are airfoils and have a curved shape.

The rotary blades 7 are preferably spaced apart at regular intervals along the circumferential direction at the edge of the disc portion 65.

The centrifugal fan (5) flows cold air cooled through a cooler (not shown) installed at the rear of the outer plate (4) to drain the cold air in the circumferential direction.

[Inlet / Bellmouth]

An upper portion of the outer plate 4 is formed with an inlet 10 through which cold air passing through the cold air duct is introduced.

The inlet 10 is preferably located between the motor 8 and the centrifugal fan 5.

The inlet 10 is provided with a bell mouse (9) for guiding the cold air inlet.

The bell mouse 9 is formed integrally with the outer plate 4 and is bent to the rear of the outer plate 4.

The bell mouse 9 comprises an upper plane 91, a lower plane 92, and curves R1 and R2.

The upper plane 91 and the lower plane 92 are parallel at regular intervals.

Curve R1 is connected to the upper plane 91.

The curve R1 does not protrude upward from the upper plane 91.

Curve R2 is connected to the bottom plane 92.

The curve R2 does not protrude below the lower plane 92.

The curve R1 and the curve R2 are connected to each other, and the radius of curvature of R1 is larger than that of R2.

The end of the bell mouse (9) is formed by the connection of the curve R1 and the curve R2, the radius of the end is preferably smaller than the radius of the disc portion 65 of the centrifugal fan (5).

As a result of improving the cross section of the end of the bell mouse (9), the efficiency of the centrifugal fan was improved by 48% from 27.3% to 40.4%, and the static pressure difference at the outlet was improved by about 61% from 8.3pa to 13.4pa. appear.

This bell mouse 9, as shown in Figs. 6 and 7, reduces the occurrence of backflow of cold air in the inlet 10 (see red ellipse), even if the area of the inlet 10 is not sufficient. There is an advantage to increase the efficiency of the centrifugal fan (5) by minimizing.

Hereinafter, the operation of the present embodiment having the above-described configuration will be described.

The cold air passing through the cold air duct moves to the upper part of the outer plate 4.

The moved cold air is guided by the bell mouse 9 and flows into the inlet 10.

Cold air passing through the inlet 10 is introduced into the rotary blade 7 of the centrifugal fan (5).

The cold air passing through the rotary blade 7 is discharged to the outlet 11.

The cool air flows into the storage chamber 2 through a discharge port (not shown) of the inner plate 3.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below Can be carried out.

As described above, the refrigerator according to the present invention is particularly suitable for refrigerators and kimchi refrigerators that increase the efficiency of the centrifugal fan.

1: body 2: storage room
3: inner plate 4: outer plate
5: centrifugal fan 6: base
60: hub 61: protrusion
62 hub hub 65 disc part
7: rotor blade 8: motor
80: rotation axis of the motor 9: Bell Mouse
91: upper plane 92: lower plane
R1: Curve connected to the upper plane R2: Curve connected to the lower plane
10: inlet 11: outlet

Claims

An inner plate having a discharge port through which cold air is discharged into the storage chamber;
An outer plate installed at a rear side of the inner plate to form a cold air duct through which cold air circulates;
A centrifugal fan installed on the outer plate and discharging cold air in a circumferential direction by introducing cold air;
Includes; Bell mouse for guiding the cold air flowing into the centrifugal fan,
The bell mouse is bent to the rear of the outer plate is formed, the refrigerator characterized in that the end of the cross section is rounded.