KR20080063659A - Refrigerator - Google Patents

Abstract

A refrigerator is provided to precisely control the temperature of a refrigerator compartment based on a preset temperature by partially or completely opening/closing a channel for supplying cool air from the freezer compartment to the refrigerator compartment. A refrigerator includes a damper assembly(50) which is comprised of an opening/closing blade(52), a driving part(53), and a controller. The opening/closing blade is slidably installed on a channel through which cool air passes from a freezer compartment to a refrigerator compartment. The opening/closing blade is provided to partially or completely open/close the channel. The driving part drives the opening/closing blade to adjust an opening degree of the channel. The controller compares a preset temperature of the refrigerator compartment and a measured temperature of the refrigerator compartment and then controls an operation of the driving part based on the compared result.

Description

Refrigerator {REFRIGERATOR}

1 is a view showing an example of a typical refrigerator.

2 shows a damper assembly of a refrigerator according to the prior art.

3 is a view showing an example of a damper assembly of a refrigerator according to the present invention.

Figure 4 is a block diagram showing a cold air flow rate control apparatus of the refrigerator according to the present invention.

5a and 5b are views showing the operating state of the damper assembly of FIG.

<Explanation of symbols on main parts of the drawings>

50: damper assembly 51: flow path mounting portion

52: opening and closing wing 53: drive unit

54: wire 55: control unit

56: button portion 57: temperature sensor

The present invention relates to a refrigerator in which cold air flows from a freezer compartment to a refrigerator compartment, and more particularly, to a refrigerator capable of more precisely controlling a flow rate of cold air flowing from a freezer compartment to a refrigerator compartment.

1 is a view illustrating an example of a general refrigerator.

Referring to FIG. 1, one embodiment of a general refrigerator includes a freezer compartment 1 and a freezer compartment door respectively installed in the refrigerator body 1 and the refrigerator body 1 to be opened and closed in parallel with both sides. ) And a refrigerating compartment door (not shown), the heat insulating material is foam-molded on the wall surface and the doors of the refrigerator body (1).

Of course, the freezer compartment F and the refrigerating compartment R are divided by the partition wall 2, and the freezer compartment F and the refrigerating compartment R are provided with shelves 3 on which goods and the like are placed. It is provided with a basket (not shown) in which the goods and the like are stored.

In this case, a compressor (not shown), a condenser (not shown), a capillary tube or an electronic expansion valve (not shown), and an evaporator 4 are built into the inner wall of the refrigerator body 1, and the evaporator 4 is formed in the freezer compartment F. It is installed on the flow path A inside the inner wall which abuts, The defrost heater 5 is provided in the lower part of the evaporator 4, and the heat exchanger from the evaporator 4 above the evaporator 4 is provided. The cold air circulation fan 6 which blows cold air is provided.

Of course, a plurality of cold air supply holes 7 may be provided at inner walls of the freezing chamber F and the refrigerating chamber R to supply cold air heat-exchanged with the evaporator 4, and the partition wall 2 may have a freezing chamber F side. The damper assembly 10 is provided to allow the cold air of the supply to the refrigerating chamber (R) side.

Therefore, when the compressor is operated, the refrigerant circulates along the compressor, condenser, capillary or electromagnetic expansion valve, and the evaporator 4, and when the cold air circulation fan 6 is operated, the cold air heat-exchanged with the evaporator 4 is forcedly blown. While being supplied to the freezer compartment (F) and the refrigerator compartment (R), the cold air circulated through the relatively low temperature freezer compartment (F) through the damper assembly 10 installed on the flow path between the freezer compartment (F) and the refrigerator compartment (R) As it is supplied to the high temperature refrigerating chamber (R) by adjusting the temperature in the high temperature.

2 is a view illustrating a damper assembly of a refrigerator according to the prior art. Referring to the damper assembly 10 applied to a conventional refrigerator with reference to the drawing, a damper 12 is installed to open and close an opening 11 communicating with a flow path. And a motor 13 which opens and closes the flow path while rotating the hinge shaft of the damper 12.

At this time, the motor 13 controls the supply / blocking of cold air from the freezer compartment F to the refrigerating compartment R while opening and closing the damper 12 in the opening 11, but the motor 13 controls the operation of the refrigerator. (Not shown) is connected to the wire 14 and controlled by the controller.

However, the refrigerator according to the prior art is not easy to precise temperature control of the refrigerating compartment because the entire passage is opened and closed while the damper is opened and closed on the flow passage for supplying cold air from the freezer compartment to the refrigerating compartment, thereby making it difficult to keep the stored goods fresher. There is a problem.

The present invention has been made to solve the problems of the prior art, an object of the present invention is to provide a refrigerator that can more precisely control the temperature of the refrigerator compartment by adjusting the flow rate of the cold air supplied from the freezer compartment to the refrigerator compartment.

The present invention for solving the above problems is slidably installed in the flow passage through which the cold air flowing from the freezer compartment to the refrigerating compartment, opening and closing wings for opening or closing the flow passage in whole or in part; A driving unit for driving the opening and closing wings to adjust the opening and closing degree of the flow path; In addition, the control unit compares the set temperature of the refrigerating compartment and the measured temperature of the refrigerating compartment, and adjusts the operation of the driving unit accordingly.

In addition, the opening and closing wing is provided with at least two refrigerators, which are engaged at the center of the cross section of the flow path and are slidably moved between the center and the edge of the flow path cross section.

In addition, the control unit provides a refrigerator, characterized in that the operation of the drive unit to adjust the opening area of the flow path in order to increase the flow rate of the cold air as the measured temperature of the refrigerating chamber higher than the set temperature of the refrigerating chamber.

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

3 is a view showing an example of a damper assembly of a refrigerator according to the present invention, Figure 4 is a block diagram showing a cold air flow control device of the refrigerator according to the present invention, Figures 5a and 5b is a damper assembly of Figure 3 The operation state of the figure is shown.

An example of a damper assembly of a refrigerator according to the present invention will be described with reference to FIGS. 3 and 4, while the sliding part is mounted on the mounting part 51 and the mounting part 51 mounted on the flow path through which cold air flows from the freezer compartment to the refrigerating compartment. Or a plurality of opening and closing wings 52 for partially opening and closing, and one motor 53 for controlling the operation of the opening and closing wings 52, wherein the cold air is supplied from the freezing compartment F to the refrigerating compartment R. The flow rate can be adjusted.

In addition, the damper assembly 50 is connected to the control unit 55 for controlling the operation of the refrigerator is connected to the wire 54 is connected to the motor 53, the operation is controlled, the control unit 55 is a button unit provided in the door ( The operation of the damper assembly 50 is controlled in consideration of the set temperature input through the 56, the measured temperature measured through the temperature sensor 57 mounted in the freezer compartment F or the refrigerating compartment R.

In detail, the damper assembly 50 includes an opening 51h of the mounting portion 51 communicating with the flow path on the mounting portion 51 and opening / closing wings on the inner side of the opening 51h of the mounting portion 51. A groove (not shown) in which 52 can be stored is provided.

At this time, the opening part 51h of the mounting part 51 is arrange | positioned horizontally with the flow direction of cold air.

Next, the opening and closing wings 52 are installed to be slidably moved from the circumference of the opening portion 51h of the mounting portion 51 to the center, and the opening and closing wings 52 are connected to the motor 53 in the same principle as a kind of camera aperture. As it is driven by the sliding movement on the opening (51h) of the mounting portion 51 is operated.

For example, the opening and closing wings 52 are formed in an arc-shaped plate, and the opening and closing wings 52 are disposed to overlap a predetermined section in the circumferential direction, and the circumferential circumference portions of the opening and closing wings 52 are geared to each other. It is engaged by, and one of the gear teeth connected to one of the opening blade 52 is configured to be connected to the motor 53, as the motor 53 is operated so that all the opening and closing wings 52 are interlocked with each other. .

As another example, the opening and closing wings 52 may be constituted only by a pair of plates, and may be installed to slide in a center from opposite directions in the openings 51h of the mounting portions 51.

Of course, the opening and closing wings 52 are disposed perpendicular to the flow direction of the cold air in the closed state.

Next, the motor 53 is connected to the gear teeth connected to one of the opening and closing wings 52, so that the opening and closing wings 52 are opened and closed while rotating in the forward or reverse direction.

At this time, the opening and closing of the opening and closing wings 52 is determined according to the rotation direction of the motor 53, and the larger the rotation angle, the opening and closing wings 52 are opened and closed from the opening 51h of the mounting portion 51 to be larger. do.

In particular, the motor 53 of the refrigerating chamber R in which the measured temperature T of the refrigerating chamber R measured by the temperature sensor 57 provided at the refrigerating chamber R side is input through the button unit 56. When higher than the set temperature (To) (T> To), the control unit 55 controls the operation of the motor 53 to open and close the wings 52, but the measurement temperature (T) of the refrigerating chamber (R) and the refrigerating chamber ( As the temperature difference ΔT of the set temperature To of R) increases, the flow rate of the cold air supplied from the freezing chamber F to the refrigerating chamber R increases.

That is, when the temperature difference ΔT between the measured temperature T of the refrigerating chamber R and the set temperature To of the refrigerating chamber R is relatively small, as shown in FIG. 5A, the rotation angle of the motor 53 is small. It is operated within the range to partially open the opening 51h of the mounting portion 51, so that only a small flow rate of cold air is supplied from the freezing chamber F to the refrigerating chamber R, while the measured temperature T of the refrigerating chamber R is When the temperature difference ΔT between the set temperature To of the refrigerating chamber R is relatively large, as shown in FIG. 5B, the rotation angle of the motor 53 is operated within a large range to open the opening portion 51h of the mounting portion 51. ) Is opened as a whole and only a large flow rate of cold air is supplied from the freezer compartment F to the refrigerating compartment R.

On the other hand, if the measured temperature T of the refrigerating chamber R is equal to or lower than the set temperature To of the refrigerating chamber R (T≤To), the controller 55 controls the motor (ie, the opening and closing wings 52) to close. 53) to control the operation, so that cold air is not supplied from the freezer compartment (F) to the refrigerating compartment (R).

In the above, the present invention has been described in detail by way of examples based on the embodiments of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

The refrigerator according to the present invention configured as described above can control the actual temperature of the refrigerating compartment to a predetermined temperature more precisely because it can open or close the flow path in which the cold air is supplied from the freezer compartment to the refrigerating compartment, thereby storing goods It can be kept more fresh, there is an advantage that can increase the user's satisfaction.

In addition, the refrigerator according to the present invention can reduce the number of parts because the opening and closing wings are controlled to be opened and closed by a single motor even if a plurality of opening and closing wings that are opened and closed in the sliding direction in the flow passage section through which cold air flows from the freezer to the refrigerating compartment. There is an advantage to reduce the installation space and production costs.

Claims (3)

An opening / closing wing which is slidably installed in a passage through which cold air flowing from the freezer compartment to the refrigerating compartment passes and opens or closes the passage in whole or in part; A driving unit for driving the opening and closing wings to adjust the opening and closing degree of the flow path; And, And a control unit for comparing the set temperature of the refrigerating compartment and the measured temperature of the refrigerating compartment and adjusting the operation of the driving unit accordingly. The method of claim 1, At least two opening and closing wings are engaged at the center of the cross section of the flow path, and are at least two slidingly moved between the center and the edge of the cross section of the flow path. The method of claim 1, The control unit controls the operation of the drive unit so that the open area of the flow path in order to increase the flow rate of the cold air as the measured temperature of the refrigerating compartment higher than the set temperature of the refrigerating compartment.

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