KR20030018839A - Apparatus for cooling air supply in refrigeration - Google Patents

Abstract

PURPOSE: An apparatus for supplying chilled air of a refrigerator is provided to efficiently regulate volume of chilled air discharged from discharge ports. CONSTITUTION: A structure includes a supply channel(31) supplying chilled air in a freezer compartment to a refrigerator compartment; a rear side branching channel(30) branching from the supply channel; a united channel(35) branching from the supply channel; a left side branching channel(36) branching from the united channel; a right side branching channel(37) branching from the united channel; a first opening and closing device(40) installed on the middle of the rear side branching channel to open and close; a second opening and closing device(50) installed on a branching point of the united channel, the left side branching channel and the right side branching channel to selectively open and close the left side branching channel and the right side branching channel; and a control part controlling the first opening and closing device and the second opening and closing device to keep the first opening and closing device and the second opening and closing device open, and to close the first opening and closing device and to open one or all of the left side branching channel and the right side branching channel by selective opening and closing of the second opening and closing device when concentrated cooling of a specific part in the refrigerator compartment is needed.

Description

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

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 refrigerating chamber (2).

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 9 illustrate an embodiment of the present invention.

5 is a cross-sectional view illustrating a case in which both the first damper and the second damper are opened.

6 is a cross-sectional view illustrating a case where the first damper is closed and the second damper is open.

FIG. 7 is a cross-sectional view illustrating a case in which the first damper is closed and the second damper closes the right branch passage.

FIG. 8 is a cross-sectional view illustrating a case in which the first damper is closed and the second damper closes the left branch passage.

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

** Description of the symbols for the main parts of the drawings **

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

35: integrated euro 36: left branch euro

37: right branch euro 40: first opening and closing means

41: first damper 42: motor

50: second opening and closing means 51: second damper

52: motor 61: the 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; An integrated flow path branched from the supply flow path and connected to left and right discharge ports of the refrigerating chamber; A left branch passage branched from the integrated passage and connected to a left discharge port of the refrigerating compartment; A right branch passage branched from the integrated passage and connected to a right discharge port of the refrigerating compartment; First opening / closing means installed in the middle of the rear branch passage and opening and closing the rear branch passage; Second opening and closing means installed at branch points of the integrated flow path and the left and right branch flow paths to selectively open and close the left and right branch flow paths; A control unit for controlling opening and closing of the first opening and closing means and the second opening and closing means; The control unit maintains the first opening and closing means and the second opening and closing means in an open state and, upon recognizing the necessity of intensive cooling of a specific portion in the refrigerating compartment, closes the first opening and closing means for a predetermined time and opens the first opening and closing means. Provided is a cold air supply device for a refrigerator, characterized in that one or all of the left and right branch passages are opened by selective opening and closing of two opening and closing means.

In addition, the cold air supply device according to the present invention includes a first temperature sensor installed behind the inner upper surface of the refrigerating chamber; A second temperature sensor and a third temperature sensor installed at left and right sides of the door of the refrigerating compartment, respectively; Preferably, the control unit is configured to recognize the detection signals of the three temperature sensor and to transmit a drive signal to the two opening and closing means, if the three temperature sensor senses a constant temperature is 2 Open all the opening and closing means, and when the second temperature sensor and the third temperature sensor sense a higher temperature than the first temperature sensor, only the first opening and closing means is closed for a predetermined time, and the second temperature is closed. When one of the sensor or the third temperature sensor senses a higher temperature than other temperature sensors, the first closing means is closed for a predetermined time and the second closing means is selectively closed to detect the high temperature. It is preferable to be configured to open only the branch flow path on the side of the temperature sensor.

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

In addition, the first opening and closing means and the second opening and closing means may be any type of valve type, hydraulic type, damper rotation by the motor, as long as it can open and close the flow of cold air to the branch flow path, the control of the controller A motor for driving forward rotation or reverse rotation; A damper rotatably mounted by the motor; It is preferable to comprise.

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

5 to 9 show an embodiment of the present invention, Figure 5 is a cross-sectional view showing a case in which both the first damper and the second damper is open, Figure 6 is a first damper is closed and the second damper is 7 is a cross-sectional view illustrating an open case, and FIG. 7 is a cross-sectional view illustrating a case in which a first damper is closed and a second damper closes a right branch flow passage. FIG. 8 is a cross-sectional view of a second damper in a state where the first damper is closed. It is sectional drawing which shows the case where a flow path is closed.

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.

9 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 the rear discharge port 30a of the refrigerating chamber 4; An integrated flow passage 35 branched from the supply flow passage 31 and connected to the left and right discharge ports 36a, 36b, 37a, and 38b of the refrigerating chamber 4; A left branch passage 36 branched from the integrated 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 integrated passage 35 and connected to right discharge ports 37a and 38b of the refrigerating chamber; First opening and closing means (40) installed in the middle of the back branch passage (30) to open and close the back branch passage (30); Second opening and closing means (50) installed at branch points of the integrated channel (35) and the left and right branch paths (36, 37) to selectively open and close the left and right branch paths (36, 37); A control unit (not shown) for controlling opening and closing of the first opening and closing means 40 and the second opening and closing means 50; It is configured to include.

In addition, the first opening and closing means 40 and the second opening and closing means 50 includes motors 42 and 52 for forward or reverse rotation driving under the control of the controller; Dampers 41 and 51 rotatably mounted by motors 42 and 52; 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 after the branching to the integrated passage 35 for the left and right sides, the configuration is diverged from the integrated passage 35 to the left and right branch passages (36, 37).

That is, as shown in FIG. 5, when both the first damper 41 and the second damper 51 are opened, when the amount of cold air supplied through the supply passage 31 is 1, the rear discharge port is formed. Since the amount discharged through 1/2 and the amount discharged through the left and right side discharge ports can each be 1/4, the temperature distribution in the refrigerating chamber can be evenly obtained as a result.

On the other hand, the control unit (not shown) installed on one side of the refrigerator maintains the first damper 41 and the second damper 51 in an open state, when recognizing the necessity of intensive cooling of a specific part in the refrigerating chamber, The first damper 41 is closed and one or all of the left and right branch passages 36 and 37 are opened by selective opening and closing of the second damper 51. Details thereof are as follows.

As shown in FIG. 5, when both the first damper 41 and the second damper 51 are open, the cold air supplied from the freezing chamber through the supply passage 31 is evenly distributed at the rear surface of the refrigerating compartment and at a ratio as described above. It is discharged through the discharge ports on the left and right sides.

As shown in FIG. 6, when the first damper 41 is closed and the second damper 51 is open, the cold air supplied from the freezing chamber through the supply passage 31 is closed by the first damper 41. Since it cannot move toward the rear branch passage 30, all of the supplied cold air is discharged through the left and right side discharge ports 36a, 36b, 37a, and 37b through the integrated passage 35.

As shown in FIG. 7, when the first damper 41 is closed and the second damper 51 closes the right branch passage 37, the cold air supplied from the freezing chamber through the supply passage 31 is first damper. Since the closing of the 41 may not move toward the rear branch flow path 30 and the second damper 51 cannot move to the right branch flow path 37, all of the supplied cold air is integrated flow path 35. And through the left side outlets 36a and 36b via the left branch passage 36.

As shown in FIG. 8, when the first damper 41 is closed and the second damper 51 closes the left branch passage 36, the cold air supplied from the freezing chamber through the supply passage 31 is first damper. Since the closing of the 41 may not move toward the rear branch passage 30, and the second damper 51 may not move to the left branch passage 36, all of the supplied cold air is integrated into the integrated passage 35. And the right side outlets 37a and 37b through the right branch passage 37.

That is, the controller (not shown) maintains the first damper 41 and the second damper 51 in an open state during normal operation of the refrigerating chamber so that the cold air is evenly discharged through the rear and side discharge ports, and then is commanded or sensed by the operator. When the temperature of a specific part in the refrigerating chamber is recognized by a sensor or the like to recognize the necessity of intensive cooling, the first damper 41 is closed for a predetermined time, and the left and right branch passages 36 and 37 are selectively opened and closed by the second damper 51. By opening one or all of the above), an even temperature distribution in the refrigerating compartment can be achieved in a short time.

9 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 behind the inner upper surface 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 of the refrigerating compartment 4, respectively; It is preferable to provide additionally.

That is, by controlling the first opening and closing means 40 and the second opening and closing means 50 as described above automatically by the temperature sensor, to achieve an even temperature distribution in the refrigerator more efficiently and conveniently If the description is as follows.

The control unit is configured to recognize the detection signals of the three temperature sensors (61, 62, 63) and to transfer the driving signal to the two opening and closing means (40, 50).

When the three temperature sensors 61, 62, and 63 detect a constant temperature, that is, approximately the same temperature during normal operation of the refrigerator, the control unit controls both the opening and closing means 40, 50 as shown in FIG. Open to allow normal operation of the refrigerator.

When the door 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 installed on the left and right sides of the refrigerating compartment door respectively have a first temperature. Compared to the sensor 61 detects a high temperature, the control unit receiving such a signal is the first opening and closing means 40 for a predetermined time in a state in which the second opening and closing means 50 is opened as shown in FIG. ) Is closed, so that cold air is discharged through the left and right side discharge ports 36a, 36b, 37a, and 37b.

When the temperature of the left part of the door part of the refrigerating compartment is increased compared to the other part by opening and closing of the refrigerating compartment door, the second temperature sensor 62 installed on the inner left side of the refrigerating compartment door has other temperature sensing sensors 61 and 63. Compared to the sensed high temperature, the control unit receiving such a signal closes the first closing means 40 for a predetermined time as shown in Figure 7 and the second closing means 50 is the right branch passage 37 ) Is selectively closed to open only the branch flow path 36 on the left side of the temperature sensor 62 which senses the high temperature, so that cold air is discharged only through the left side discharge ports 36a and 36b.

When the temperature of the right side of the door portion of the refrigerating compartment rises compared to the other portions by opening and closing of the refrigerating compartment door, the control unit controls the cold air to the right side discharge ports 37a and 37b as shown in FIG. Discharge only through).

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; An integrated flow path branched from the supply flow path and connected to left and right discharge ports of the refrigerating chamber; A left branch passage branched from the integrated passage and connected to a left discharge port of the refrigerating compartment; A right branch passage branched from the integrated passage and connected to a right discharge port of the refrigerating compartment; First opening / closing means installed in the middle of the rear branch passage and opening and closing the rear branch passage; Second opening and closing means installed at branch points of the integrated flow path and the left and right branch flow paths to selectively open and close the left and right branch flow paths; A control unit for controlling opening and closing of the first opening and closing means and the second opening and closing means; Equipped, The control unit maintains the first opening and closing means and the second opening and closing means in an open state, and when it recognizes the need for intensive cooling of a specific part in the refrigerating compartment, closes the first opening and closing means for a predetermined time and opens the second opening and closing means. Cold air supply of the refrigerator, characterized in that for opening one or all of the left and right branch passages by selective opening and closing of the The method of claim 1, A first temperature sensor installed behind an inner upper surface of the refrigerating compartment; A second temperature sensor and a third temperature sensor installed at left and right sides of the door of the refrigerating compartment, respectively; Additionally provided, The control unit is configured to recognize the detection signals of the three temperature detection sensors and to transmit a driving signal to the two opening and closing means, when the three temperature detection sensors detect a constant temperature and open both the opening and closing means When the second temperature sensor and the third temperature sensor sense a higher temperature than the first temperature sensor, only the first opening / closing means is closed for a predetermined time, and the second temperature sensor or the third temperature sensor is closed. When one of the sensors senses a higher temperature than the other temperature sensing sensors, the branch flow path on the side of the temperature sensing sensor that senses the high temperature by closing the first closing means and selectively closing the second closing means for a predetermined time. Cold air supply device of the refrigerator, characterized in that to open the bay The method of claim 1, The supply passage, the rear branch passage, the integrated passage, the left branch passage, the right branch passage, the first opening and closing means and the second opening and closing means is formed in the barrier of the refrigerator cold air supply apparatus The method of claim 1, The first opening and closing means and the second 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