KR100414287B1 - Apparatus for cooling air supply in refrigerator - Google Patents

Abstract

The present invention provides a supply passage for supplying cold air from the freezer compartment to the refrigerating compartment in order to achieve the object as described above; A rear branch channel branched from the supply channel and connected to a rear discharge port of the refrigerating chamber; Side branch passages branched from the supply passages and connected to left and right discharge ports of the refrigerating chamber; A left branch passage branched from the side branch passage and connected to a left discharge port of the refrigerating compartment; A right branch passage branched from the side branch passage and connected to a right discharge port of the refrigerating compartment; Opening and closing means installed at branch points of the supply passage, the rear branch passage, and the side branch passage to selectively open and close the rear branch passage and the side branch passage; A control unit for controlling opening and closing of the opening and closing means; The control unit maintains the rear branch flow path in an open state and, upon recognizing the necessity of intensive cooling of the door part in the refrigerating compartment, closes the rear branch flow path for a predetermined time and opens the side branch flow path. By providing a cold air supply device to be provided, it is possible to efficiently control the amount of cold air discharged from the discharge port formed in the inner rear and left and right sides of the refrigerating compartment to provide a structure of the refrigerator that can evenly distribute the temperature distribution inside the refrigerating compartment.

Description

Refrigeration air supply unit {APPARATUS FOR COOLING AIR SUPPLY IN REFRIGERATOR}

The present invention relates to a cold air supply device for a refrigerator, and in detail, to control the amount of cold air discharged through the cold air discharge ports formed on the rear and left and right sides of the refrigerating chamber in a balanced manner and to enable centralized cooling of specific parts as necessary. It relates to a supply device.

In general, a refrigerator is divided into a freezer compartment for storing an ice making container and a frozen food at a set temperature, and a refrigerating compartment in which a refrigeration object is stored. In the freezer compartment and the refrigerating compartment, cold air converted by a refrigerant circulating in a freezing cycle is provided. Keep it for a long time.

1 to 4 illustrate a cold air supply structure of a conventional refrigerator, FIG. 1 is a sectional front view, FIG. 2 is a sectional view taken along line AA ′ of FIG. 1, FIG. 3 is a sectional view taken along line AA ′ of FIG. 1, and FIG. BB cross section.

As shown, the conventional refrigerator is partitioned into a freezer compartment 2 and a refrigerating compartment 4 by a barrier 5 filled with insulation.

Heat exchange takes place in the evaporator 6 through which the low-temperature low-pressure refrigerant passes, and part of the cold air is supplied to the freezing chamber 2 through the shroud 12 by the axial fan 8, and the other part of the shroud ( Free fall through 12) is supplied to the refrigerator compartment (4).

The cold air supply structure to the refrigerating chamber is as follows.

The cold air supplied from the freezing chamber to the refrigerating chamber is sucked into the suction port formed on one side of the lower surface of the shroud 12, passes through the cold air supply passage 31 formed below the suction port, and is formed inside the barrier 5. It is divided into branch flow paths 32 and 33.

A part of the cold air branched toward the left branch passage 32 passes through the rear branch passage 30 installed in the longitudinal direction on the rear surface of the refrigerating chamber, and is discharged through the plurality of rear discharge ports 30a, and part of the cold air flows as it is. It discharges through the left discharge port 32a formed in the left side of 4).

The cold air branched toward the right branch passage 33 is discharged through the right discharge port 33a formed in the right side of the refrigerating chamber 4 in its entirety.

In this way, the discharge ports 32a and 33a for cold air are formed not only on the rear surface of the refrigerating chamber 4 but also on both sides thereof to achieve an even temperature distribution in the refrigerating chamber.

The cold air supplied to the freezer compartment 2 and the refrigerating compartment 4 through the above process becomes relatively high temperature through heat exchange with the food stored therein, and the air at high temperature is formed in the freezer compartment 5 of the barrier 5. It moves back to the evaporator 6 via the return flow path 2a and the refrigerator compartment return flow path 4a.

By the way, in the cold air supply structure of the refrigerator as described above, the cold air passing through the cold air supply passage 31 of the freezer compartment is branched into the left and right branch passages 32 and 33 by 1/2, respectively, of which the left branch passage 32 Only the cold air passing through) takes the structure of branching back to the back branch flow path 30 and the flow path toward the left discharge port 32a.

Therefore, as a result, the amount of cold discharged from the left discharge port 32a and the cold air discharged from the right discharge port 33a are different. Therefore, the temperature distribution in the refrigerating compartment cannot be made constant. It has been pointed out as a problem that causes the meaning formed to fade.

In addition, if there is an opening / closing operation of the refrigerator door for removing or storing food in the refrigerator, the temperature distribution in the refrigerator is temporarily unbalanced. Thus, by using a plurality of discharge ports formed in the refrigerator as described above, There has been a demand for a solution to resolve the imbalance in a short time.

In order to solve the above problems, an object of the present invention is to provide a cold air supply device of a refrigerator capable of efficiently controlling the amount of cold air discharged from discharge ports formed in the inner rear and left and right sides of the refrigerating chamber.

1 to 4 illustrate a cold air supply structure of a conventional refrigerator,

1 is a front cross-sectional view

FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1;

3 is a cross-sectional view taken along line AA of FIG.

4 is a cross-sectional view taken along line B-B of FIG.

5 to 7 illustrate an embodiment of the present invention.

5 is a cross-sectional view illustrating a case in which a side branch passage is closed and a rear branch passage is opened;

6 is a cross-sectional view illustrating a case where the rear branch flow path is closed and the side branch flow path is opened.

7 is a front view showing a state in which the door of the refrigerating chamber is opened.

** Explanation of symbols for main parts of drawings **

30: branched back flow path 31: cold air supply flow path

35: side branching passage 36: left branching passage

37: right branch passage 40: opening and closing means

41: damper 42: motor

61: first temperature sensor 62: second temperature sensor

63: third temperature sensor

The present invention provides a supply passage for supplying cold air from the freezer compartment to the refrigerating compartment in order to achieve the object as described above; A rear branch channel branched from the supply channel and connected to a rear discharge port of the refrigerating chamber; Side branch passages branched from the supply passages and connected to left and right discharge ports of the refrigerating chamber; A left branch passage branched from the side branch passage and connected to a left discharge port of the refrigerating compartment; A right branch passage branched from the side branch passage and connected to a right discharge port of the refrigerating compartment; Opening and closing means installed at branch points of the supply passage, the rear branch passage, and the side branch passage to selectively open and close the rear branch passage and the side branch passage; A control unit for controlling opening and closing of the opening and closing means; The control unit maintains the rear branch flow path in an open state and, upon recognizing the necessity of intensive cooling of the door part in the refrigerating compartment, closes the rear branch flow path for a predetermined time and opens the side branch flow path. It presents a cold air supply of the refrigerator.

In addition, the cold air supply device of the refrigerator according to the present invention includes a first temperature sensor installed in the rear of the refrigerating chamber; A second temperature sensor and a third temperature sensor installed on the left and right sides of the door of the refrigerating compartment, respectively; In addition, the control unit is configured to recognize the detection signal of the three temperature sensor and transmit a drive signal to the opening and closing means, when the three temperature sensor senses a constant temperature to open the rear branch flow path When the second temperature sensor and the third temperature sensor sense a higher temperature than the first temperature sensor, it is preferable that the rear branch flow path is closed for a predetermined time and the side branch flow path is opened. .

In addition, it is preferable that the supply passage, the rear branch passage, the side branch passage, the left branch passage, the right branch passage, and the opening and closing means are formed in the barrier of the refrigerator.

Furthermore, the opening and closing means includes a motor for driving forward rotation or reverse rotation under the control of the controller; A damper rotatably mounted by the motor; It is effective to include.

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

5 to 7 illustrate one embodiment of the present invention, FIG. 5 is a cross-sectional view illustrating a case in which the side branch passage is closed and the rear branch passage is opened, and FIG. 6 is a rear branch passage closed and the side branch passage. It is sectional drawing which shows the case where is opened.

The drawings correspond to FIG. 4 of the drawings illustrating the cold air supply structure of the conventional refrigerator as described above, and the rest of the configuration is the same as that of the conventional art.

7 is a front view which shows the state in which the door of the refrigerating chamber was opened.

As shown, the cold air supply device according to the present invention includes a supply passage 31 for supplying cold air from the freezer compartment to the refrigerating compartment; A rear branch passage 30 branched from the supply passage 31 and connected to rear discharge ports 30a and 30b of the refrigerating chamber 4; A side branch passage 35 branched from the supply passage 31 and connected to the left and right discharge ports 36a, 36b, 37a, and 37b of the refrigerating chamber 4; A left branch passage 36 branched from the side branch passage 35 and connected to the left discharge ports 36a and 36b of the refrigerating chamber 4; A right branch passage 37 branched from the side branch passage 35 and connected to the right discharge ports 37a and 37b of the refrigerating chamber 4; Opening and closing means (40) installed at branch points of the supply flow passage (31), the rear branch flow passage (30), and the side branch flow passage (35) to selectively open and close the rear branch flow passage (30) and the side branch flow passage (35); A control unit (not shown) for controlling the opening and closing of the opening and closing means 40; It is configured to include.

In addition, the opening and closing means 40 includes a motor 42 for forward or reverse rotation driving under the control of the controller; A damper 41 rotatably mounted by the motor 42; It is configured to include.

Compared with the conventional cold air supply structure of the conventional refrigerator, there is no difference in forming a flow path for discharging cold air through the discharge ports formed on the rear and side surfaces, but the rear branch flow path in the supply flow path 31 to which cold air is supplied from the freezer compartment ( 30) and the side branch passage 35 once the configuration is branched, there is a difference in that it takes a configuration branched again from the side branch passage 35 to the left and right branch passages (36,37).

On the other hand, the control unit (not shown) installed on one side of the refrigerator maintains the rear branch passage 30 in the open state, when recognizing the need for intensive cooling of the door part in the refrigerating chamber, the rear branch passage 30 for a predetermined time To close and open the side branch flow path 35, the contents of which are described in detail as follows.

As shown in FIG. 5, when the side branch flow path 35 is closed and only the rear branch flow path 30 is opened, this is a general state, and the cold air supplied from the freezing chamber through the supply channel 31 is changed to the side branch flow path ( Since it is impossible to move to the left and right discharge ports 36a, 36b, 37a, and 37b by the closing of 35, all of the supplied cold air is discharged through the rear discharge ports 30a and 30b of the refrigerating chamber through the rear branch passage 30.

As shown in FIG. 6, when the rear branch channel 30 is closed and the side branch channel 35 is open, the cold air supplied from the freezing chamber through the supply channel 31 is closed to the rear branch channel 30. Since it cannot move toward the rear discharge ports 30a and 30b, all of the supplied cold air is discharged through the left and right side discharge ports 36a, 36b, 37a and 37b via the side branch flow passage 35.

That is, the controller (not shown) maintains only the rear branch flow path 30 in an open state during normal operation of the refrigerating chamber to allow the cold air to be discharged through the rear discharge port. Recognizing the necessity of intensive cooling, the rear branch passage 30 is closed for a predetermined time, and the rear branch passage 30 is closed by only opening and closing the opening and closing means 40 and only the side branch passage 35 is opened. By centralizing the door area through the left and right side discharge ports 36a, 36b, 37a, and 37b, an even temperature distribution in the refrigerating chamber can be achieved in a short time.

7 is a front view showing the mounting position of the temperature sensor as the door of the refrigerating chamber is opened.

As shown, the cold air supply device according to the present invention includes a first temperature sensor 61 installed in the rear of the refrigerating chamber (4); A second temperature sensor 62 and a third temperature sensor 63 installed on the left and right sides of the door 1 in the refrigerating chamber 4; It is preferable to provide additionally.

That is, by controlling the opening and closing means 40 as described above automatically by the temperature sensor, it is to achieve an even temperature distribution inside the refrigerator more efficiently and conveniently. same.

The control unit is configured to recognize the detection signals of the three temperature detection sensors (61, 62, 63) and transmit a driving signal to the opening and closing means (40).

When the three temperature sensors 61, 62, 63 detect a constant temperature, i.e., almost the same temperature during normal operation of the refrigerator, the controller controls the side branch flow path by the opening and closing means 40 as shown in FIG. 35) is closed and only the rear branch passage 30 is opened so that normal operation of the refrigerator is continued.

When the door 1 of the refrigerating compartment is opened and closed and the temperature of the door part of the refrigerating compartment is increased compared to the inner part, the second temperature sensor 62 and the third temperature sensor 63 respectively installed on the left and right sides of the refrigerating compartment door are Compared to the first temperature sensor 61, the sensor senses a higher temperature, and the control unit receiving such a signal closes the rear branch passage 30 as shown in FIG. 6 and the side branch passage 35 for a predetermined time. The bay is opened so that cold air is discharged through the left and right side discharge ports 36a, 36b, 37a, and 37b.

Then, when the temperature inside the refrigerating chamber becomes uniform after a certain time, the control unit receives such information from the temperature sensor (61, 62, 63) and the opening and closing means 40 again as shown in FIG. By closing the side branch flow path 35 and only the rear branch flow path 30 is opened so that the normal operation of the refrigerator continues.

In addition, the cold air supply apparatus according to the present invention is significant in that it provides a means for maintaining a constant temperature distribution in the refrigerating chamber without using additional power consumption, thereby enabling more efficient power operation. .

In addition, the cold air supply structure as described above may be installed anywhere in the space between the freezer compartment and the refrigerating compartment, but it would be more preferable in terms of practical feasibility to be installed inside the barrier 5 which is a structure generally used conventionally. Seems to be.

The present invention provides an apparatus for supplying a cold air of a refrigerator that can evenly adjust a temperature distribution inside a refrigerating chamber by allowing the amount of cold air discharged from the discharge ports formed on the inner back and left and right sides of the refrigerating chamber to be efficiently controlled.

Claims (4)

A supply passage for supplying cold air from the freezer compartment to the refrigerating compartment; A rear branch channel branched from the supply channel and connected to a rear discharge port of the refrigerating chamber; Side branch passages branched from the supply passages and connected to left and right discharge ports of the refrigerating chamber; A left branch passage branched from the side branch passage and connected to a left discharge port of the refrigerating compartment; A right branch passage branched from the side branch passage and connected to a right discharge port of the refrigerating compartment; Opening and closing means installed at branch points of the supply passage, the rear branch passage, and the side branch passage to selectively open and close the rear branch passage and the side branch passage; A control unit for controlling opening and closing of the opening and closing means; Equipped, The control unit maintains the rear branch flow path in an open state and, upon recognizing the necessity of intensive cooling of the door part in the refrigerating compartment, closes the rear branch flow path for a predetermined time and opens the side branch flow path. Cold air supply system. The method of claim 1, A first temperature sensor installed inside the refrigerating compartment; A second temperature sensor and a third temperature sensor installed on the left and right sides of the door of the refrigerating compartment, respectively; Additionally provided, The control unit is configured to recognize the detection signal of the three temperature sensor and to transmit a drive signal to the opening and closing means, when the three temperature sensor senses a constant temperature, the rear branch flow path is opened, the second When the temperature sensor and the third temperature sensor senses a higher temperature than the first temperature sensor, the cold air supply device of the refrigerator characterized in that for closing the rear branch flow path for a predetermined time, and to open the side branch flow path . The method of claim 1, The supply passage, the rear branch passage, the side branch passage, the left branch passage, the right branch passage and the opening and closing means is formed in the barrier of the refrigerator cold air supply apparatus. The method of claim 1, The opening and closing means A motor for driving forward rotation or reverse rotation under control of the controller; A damper rotatably mounted by the motor; Cold air supply device of the refrigerator comprising a.