KR20010011784A - Apparatus for supplying cold air in refrigerator - Google Patents

Abstract

PURPOSE: A cool air supply device is provided to increase a cool air supply to a freezer and a refrigerator and refrigeration efficiency by controlling a supply amount of cool air in the refrigerator which a pressure loss happens. CONSTITUTION: A cool air supply device(30) is composed of a sirocco fan(40), a shroud(50) and a cooling controller(60) and supplies a freezing chamber and a refrigerating chamber with air cooled in the upper back of the freezing chamber. Air cooled through an evaporator flows in a sirocco fan(40) and blows. The shroud(50) has a passage to feed cool air. The cooling controller(60) is attached to the passage of the shroud(50). The sirocco fan(40) has plural curve short wings, blows cool air vertically and generates a fixed pressure more than an axial flow fan.

Description

Refrigeration air supply unit {APPARATUS FOR SUPPLYING COLD AIR IN REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly, by installing a sirocco fan and a branched cold air supply path for supplying cold air to a freezer compartment and a cold compartment of a refrigerator at a high fixed pressure to increase the amount of cold air, and to control the amount of cold air supplied to the refrigerator compartment. It relates to a cold air supply unit of a refrigerator.

Conventional refrigerators generally have a structure in which a freezer for freezing food is installed on the upper part of a refrigerating compartment for storing food. However, in a large refrigerator, a freezer and a refrigerating compartment are installed on the left and right sides to store more food. One side by side type is mainly used.

1 illustrates a partially cutaway perspective view of an internal structure of a conventional side by side refrigerator.

In the figure, 10 is a freezer compartment for storing food, 20 is a refrigerator compartment for storing food, and 1 is a cold air supply device for supplying cold air to the freezer compartment and the refrigerating compartment.

In the freezer compartment 10, an ice maker 14 is positioned at an upper portion thereof, and a freezer compartment discharge outlet 11 through which cold air is supplied from the cold air supply device 1 is installed therein. The lower part of 14 is provided with a freezer compartment discharge port 12 through which a shelf for freezing food and cold air is supplied, and a freezer compartment suction port 13 through which cold air circulated in the freezer compartment is sucked.

The refrigerating chamber 20 is distinguished from the freezing chamber 10 by a mullion (6) wall located in the middle, the cold air from the cold air supply device (1) via the cold air supply port 21 in the upper portion The refrigerator compartment discharge port 22 is provided, the lower portion is provided with a shelf for refrigeration, such as food, and the refrigerator compartment suction port 23 through which cold air circulated in the refrigerator compartment is sucked.

2 and 3 show the main configuration of the cold air supply device 1 and the flow of cold air, wherein the cold air supply device 1 is located at the rear upper portion of the freezing chamber 10 and passes through the evaporator 2. An apparatus for sucking and circulating cooled air into a refrigerator, comprising: an axial fan (3) for introducing cooled air, a shroud (4) formed with a passage of the introduced air, and a shroud (4); It consists of a grill pan (5) for supplying air introduced into the passage to the freezer compartment (10) and the refrigerating compartment (20).

Referring to the cold air circulation structure of the cold air supply device 1 having the configuration as described above are as follows.

When power is applied, a compressor (not shown) is driven to form cooling air by heat exchange of the evaporator 2, and the cooling air is operated by an axial flow fan 3 installed thereon to operate the freezing chamber by centrifugal force by rotation. 10) and the refrigerating chamber 20.

In the freezer compartment 10, cold air is supplied from the upper portion to the ice maker 14 through the freezer compartment outlet 11, and at the bottom, the cold air is supplied to the shelf of the freezer compartment through the freezer compartment outlet 12. In the refrigerating chamber (20), the cold air having a centrifugal force by rotation by the axial fan (3) is supplied to the refrigerating chamber (20) through the refrigerating chamber discharge port (22) via the refrigerating chamber cold air supply port (21). After being sucked into the refrigerating chamber suction port 23 is circulated.

As described above, the cold air circulating in the freezer compartment 10 and the refrigerating compartment 20 of the refrigerator inevitably causes a pressure loss in the circulation process, and FIG. 4 illustrates a relationship between the cold air supply amount Q and the pressure loss Ps. It was. In the figure, Ps ₁ is a pressure loss of the freezer compartment and Ps ₂ is a curve representing the pressure loss of the refrigerating compartment. The pressure loss Ps increases with the increase of the cold air supply Q, and the freezer compartment for a certain amount of cold air supply Qc. the pressure drop (P ₁₎ is shown relatively large compared to the pressure drop (P ₂₎ of the refrigerator compartment.

In order to compensate for the pressure loss in the refrigerating compartment 20 generated as described above, the air flow amount of the refrigerating compartment 20 should be increased, but it is difficult to apply the expansion of the cold air supply flow path due to the space constraint such as the reduction of the internal volume of the refrigerating compartment. In addition, when only the blowing amount is increased, the rotation speed of the axial fan 3 and the motor is increased, and noise is generated.

That is, in the conventional cold air supply device, since the axial flow fan 3 having a small blowing capacity is applied, the cold air supply amount is insufficient, and the refrigeration efficiency is lowered due to the pressure loss generated in the refrigerating chamber 20.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to increase the amount of cold air supplied to the freezer compartment and the refrigerating compartment of the refrigerator, and to control the amount of cold air supply of the refrigerating compartment in which pressure loss occurs It is to provide a cold air supply device of the refrigerator that can improve the refrigeration efficiency.

1 is a partially cutaway perspective view showing the internal structure of a conventional refrigerator.

Figure 2 is a partial perspective view showing the main configuration and the flow of cold air of the conventional refrigerator cold air supply.

Figure 3 is a side cross-sectional view showing the main configuration and the flow of cold air of the conventional refrigerator cold air supply.

Figure 4 is a chart showing the pressure loss of the freezer compartment and the refrigerating compartment of the conventional refrigerator.

Figure 5 is a perspective view showing the main part of the cold air supply apparatus according to the present invention.

Figure 6 is a side cross-sectional view showing the flow of cold air supply and cold air according to the present invention.

7 is a front view of the shroud of the cold air supply apparatus according to the present invention.

Figure 8 is an enlarged perspective view showing a cold air control means of the present invention.

Figure 9 is another embodiment of the cold air control means shown in FIG.

<Code Description of Major Parts of Drawings>

10: freezer compartment 11: freezer compartment discharge outlet

12: freezer compartment discharge outlet 13: freezer compartment suction port

14: ice maker 20: cold room

21: refrigerator compartment cold air supply port 22: refrigerator compartment discharge port

23: cold room suction port 30: cold air supply device

40: sirocco fan 50: shroud

51: cold air inlet 52: upper supply passage

52a: upper supply path inner bent 52b: upper supply path outer bent

53: lower supply path 53a: lower supply path inner bent portion

53b: lower supply path outer bent portion 54: side supply path

54a: side supply path inner bent part 54b: side supply path outer bent part

60: cold air control means 61: support

62: adjusting plate 63: fixing means

P: Starting point of upper feedway Q: Starting point of lower feedway

R: Starting point of side feed

In order to achieve the above object, the refrigerator's cold air supply device of the present invention is a sirocco fan that drives the air cooled in the evaporator of the refrigerator by a motor to blow cold air into the freezer compartment and the refrigerating compartment, and the inlet formed inside the sirocco fan. A plurality of cold air supply passages through which the cold air passes through the sirocco fan is formed and blown to the freezer compartment and the refrigerating compartment, and cold air control means for controlling the amount of cold air supplied to the cold air supply passages formed in the shrouds. It is characterized by.

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings.

5 is a partial perspective view showing the main configuration and the flow of cold air of the cold air supply apparatus according to the present invention, Figure 6 is a side cross-sectional view.

The cold air supply device 30 includes a siroco fan 40 for introducing and blowing air cooled through the evaporator 2, a shroud 50 having a passage through which the cold air is supplied, and the shra It is composed of a cold air control means 60 is installed in addition to the cold air supply passage of the wood 50, to supply the air cooled in the upper rear of the freezer compartment 10 into the freezer compartment 10 and the refrigerating compartment 20 to circulate Device.

The sirocco fan 40 is a fan having short vanes having a plurality of front curves, and is blown in a vertical direction with respect to the incoming cold air, and has a characteristic of generating a higher fixed pressure than the axial fan.

As shown in FIG. 7, the shroud 50 has an inlet 51 through which cold air generated from the evaporator 2 is introduced, and a plurality of cold air supply paths multiplied in a housing constituting the main body. Is installed, the cold air supply path has a curved shape that increases the radius of curvature increases away from the center of the sirocco fan 40. The cold air supply path is directed in three directions, an upper supply path 52 connected to the freezer compartment upper outlet 11, a lower supply path 53 connected to the freezer compartment lower outlet 12, and a cold air supply to the refrigerating compartment. It is composed of a side supply passage 54 connected to the sphere (21).

The cold air supply passage is an intaglio space formed between the inner curved portions 52a, 53a, and 54a and the outer curved portions 52b, 53b, and 54b, and the outer curved portion and the inner curved portion of each cold air supply passage are formed by a predetermined angle. It is installed by differently. That is, as shown in Figure 7, the upper supply path 52 has a difference by the angle θ ₁ by the starting point P of the outer curved portion and the starting point Q of the inner curved portion, the lower supply path 53 is the starting point Q of the outer curved portion And the difference by the angle θ ₂ by the starting point R of the inner bent portion, the side supply path 54 is formed to have a difference by the angle θ ₃ by the starting point R of the outer bent portion and the starting point P of the inner bent portion.

The cold air adjusting means 60 may be separately installed on the outer curved portions 52b, 53b, and 54b of each cold air supply path formed in the shroud 50, and the present embodiment may supply side parts as shown in FIG. Installed in the furnace 54 is configured to adjust the amount of cold air supplied to the refrigerating chamber 20, it is possible to adjust the amount of cold air supply even if installed in the inner curved portion (52a, 53a, 54a).

8 is an enlarged view of the cold air adjusting means 60 of the present invention, the cold air adjusting means 60 according to the present embodiment is the starting point R of the outer curved portion 54b at which the side feed passage 54 starts. It is composed of a support (61) formed in a cylindrical shape and a plate-shaped control plate (62) that can move in the direction of the arrow while sliding the inside of the support (61) according to the guide.

9 is another embodiment of the cold air adjusting means 60, one side of the support 61 is cut in the longitudinal direction, the plate-shaped control plate 62 in the direction of the arrow at any position as the cut portion It is configured to be inserted.

In addition, in the cold air adjusting means 60 of Figs. 8 and 9, it is preferable to determine the position where the control plate 62 can be moved to supply an appropriate amount of cold air, so that the control plate 62 does not move arbitrarily. Fixing means 63 is fixed to the earth 61 is formed. It is also preferable that the fixing means 63 forms a concave-convex portion corresponding to the coupling portion of the supporter 61 and the control plate 62 or press the control plate 62 with elasticity.

Looking at the operation of the cold air supply device of the refrigerator according to the present invention having the configuration as described above are as follows.

When power is applied, a compressor (not shown) is driven to form cooling air by heat exchange of the evaporator 2. The cooling air is introduced into the cold air by centrifugal force by rotation via the inside of the sirocco fan 40 installed in the upper portion. It is blown vertically with respect to the direction, and the cold air is supplied to the freezing chamber 10 and the refrigerating chamber 20 at a higher fixed pressure than the conventional one through the cold air supply path formed in the shroud 50.

In FIG. 7, an upper supply path 52 formed at an upper portion of the sirocco fan 40 is connected to a freezer compartment discharge outlet 11 and discharged to an ice maker 14, and a lower supply formed at a lower part of the sirocco fan 40 is shown. The furnace 53 is connected to the freezer compartment discharge outlet 12 and is discharged to the freezer compartment 10, and the side supply passage 54 formed next to the sirocco fan 40 is connected to the refrigerating compartment cold air supply port 21 to discharge the refrigerating compartment outlet. The discharged cold air is delivered to the refrigerating compartment 20 through the 22, and the discharged cold air is delivered to the foods provided in the freezing compartment and the refrigerating compartment, and then sucked through the suction ports 13 and 23. The cold air supply passage is expanded than in the prior art, while the blowing amount is increased, while the installed volume is smaller than the conventional space utilization of the refrigerating chamber 20 is advantageous.

The amount of cold air supplied through the cold air supply path formed in the shroud 50 forms a start point of the outer curved parts 52b, 53b, and 54b of each cold air supply path and a starting point of the inner curved parts 52a, 53a, and 54a. It is determined by the size of the angle. Therefore, as illustrated in FIG. 7, the amount of cold air supplied by the upper supply path 52 is determined by the size of the angle θ ₁ formed by the point POQ, and the amount of cold air supplied by the lower supply path 53 is formed by the point QOR. is determined by the size of the angle θ _2, cold air supply by a supply side 54 is determined by the angle θ ₃ of the point ROP forming size.

On the other hand, as shown in Figure 4, in general, when the pressure loss of the refrigerating compartment 20 is excessively increased to increase the amount of cold air supplied to the refrigerating compartment 20, since the size of θ ₃ shown in FIG. The cold air adjusting means 60 illustrated in FIGS. 8 and 9 is installed at the position of the starting point R of the outer curved portion forming the 54 to move the control plate 62 to increase the size of the angle θ ₃ to refrigerate the chamber 20. By adjusting the amount of cold air supplied to), by adjusting the amount of cold air in response to changes in the ambient temperature such as seasonal changes, the refrigeration efficiency is improved.

As described above, the cold air supply apparatus of the refrigerator according to the present invention increases the amount of cold air supply and expands the passage through which cold air is supplied by installing a sirocco fan and a multi-branched cold air supply path generating high fixed pressure. To compensate for the pressure loss, the space of the refrigerating compartment can be used efficiently. In addition, by installing a cold air control means to adjust the amount of cold air supply in the refrigerating chamber having a large pressure loss in response to changes in the ambient temperature, there is an effect that can improve the refrigeration efficiency according to the seasonal characteristics.

Claims (2)

A sirocco fan which accelerates cold air introduced through an evaporator and discharges it radially; And a shroud having a plurality of cold air supply paths for supplying cold air discharged from the sirocco fan to a freezing compartment, a refrigerating compartment, and the like. The cold air supply apparatus according to claim 1, wherein cold air adjusting means for adjusting a cold air supply amount is provided in a cold air supply path formed in the shroud.