KR100451352B1 - Cooling air circulating structure of refrigerator - Google Patents

Abstract

The present invention comprises a cooler chamber formed at the rear of the freezer compartment and a refrigerator compartment formed at a lower side of the freezer compartment and separated by a plurality of shelves so as to be separated by the freezer compartment and the barrier, wherein the cold air supplied from the cooler chamber is provided in the freezer compartment. And a refrigerator having a cold air circulation structure for circulating the inside of the refrigerating compartment and then returning it to the cooler chamber, the refrigerator comprising: a freezing compartment suction port formed on a bottom surface of the freezing compartment; A freezer compartment suction passage extending from the freezer compartment suction port; A freezer compartment return passage branched from the freezer compartment suction passage and connected to the cooler chamber; A refrigerator compartment side branch passage extending from the freezer compartment suction passage to the side of the refrigerator compartment; A refrigerating chamber side discharge port formed in a middle or an end of the refrigerating chamber side branch passage and discharging cold air into the refrigerating chamber; A refrigerating compartment rear suction port for sucking cold air having a temperature rise in the refrigerating compartment; A refrigerating chamber return flow path connected to the cooler chamber from the refrigerating chamber rear suction port; The present invention provides a refrigerator having a more efficient structure such as reducing the noise by preventing an overload of the axial flow fan by reducing the resistance of the cold air flow path for supplying cold air to the inside of the refrigerator.

Description

COOLING AIR CIRCULATING STRUCTURE OF REFRIGERATOR}

The present invention relates to a cold air circulation structure of the refrigerator, and more particularly, to a cold air circulation structure of the refrigerator for reducing the resistance of the flow path for supplying cold air to the inside of the refrigerator.

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 3 show a cold air supply structure of a conventional refrigerator, FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along line A-A of FIG. 1, and FIG. 3 is a sectional view taken along line B-B of FIG.

As shown, the conventional refrigerator is partitioned into a freezer compartment 2 and a refrigerating compartment 4 by a barrier 5 filled with heat insulating material, and a cooler chamber 1 is formed at a rear side of the freezer compartment 2, and a freezer compartment ( 2) and the front of the refrigerating chamber (4) is provided with doors 20 and 40 to be opened and closed.

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 supplied from the cooler chamber 1 to the refrigerating chamber 4 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 the barrier 5 It is divided into two branching flow paths 32 and 33 formed inside the.

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. The suction passage 2a and the refrigerating chamber suction passage 4a move to the vicinity of the evaporator 6 again.

By the way, in the conventional cold air supply structure of the refrigerator, since the cold air cooled in the cooler chamber 1 is supplied to the freezing chamber 2 and the refrigerating chamber 4, respectively, the number of the cold air flow paths increases and the structure Has been pointed out as a problem that the flow resistance is large and the flow resistance is large.

In addition, such a flow path resistance has been pointed out as a problem in that the noise is increased because it causes an overload in the axial fan (8).

The present invention is to solve the above problems, by reducing the resistance of the cold air flow path for supplying the cold air inside the refrigerator, to provide a more efficient cold air circulation structure of the refrigerator, such as to prevent the overload of the axial flow fan to reduce noise. The purpose.

1 to 3 illustrate a cold air supply structure of a conventional refrigerator,

1 is a longitudinal cross-sectional view

2 is a cross-sectional view taken along the line A-A of FIG.

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

4 to 7 illustrate a cold air circulation structure according to the present invention,

4 is a longitudinal sectional view showing the structure of the entire refrigerator.

5 is a cross-sectional view showing the structure of the cold air flow path inside the barrier.

6 is an enlarged cross-sectional view of a main part showing a state in which the refrigerating chamber side branch flow path is closed;

7 is an enlarged cross-sectional view of an essential part showing a state in which a refrigerating chamber side branch flow path is opened;

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

1: cooler chamber 2: freezer chamber

4: cold room 5: barrier

6: evaporator 8: axial flow fan

9: shelf 12: shroud

14: door basket 15: vegetable storage room

20: freezer door 40: cold storage door

101: freezer compartment suction port 102: freezer compartment suction passage

103: freezing chamber return flow path 104: cold storage chamber side branch flow path

105: refrigerating chamber return flow path 110: refrigerating chamber discharge port

120: refrigerator compartment back suction

The present invention comprises a refrigerator compartment formed at the rear of the freezer compartment, and a refrigerator compartment formed at a lower side of the freezer compartment and partitioned by a plurality of shelves in order to achieve the object as described above, A refrigerator having a cold air circulation structure in which cold air supplied from the cooler chamber circulates inside the freezer compartment and a refrigerating compartment, and then returns to the cooler chamber, the refrigerator comprising: a freezer compartment suction port formed on a bottom surface of the freezer compartment; A freezer compartment suction passage extending from the freezer compartment suction port; A freezer compartment return passage branched from the freezer compartment suction passage and connected to the cooler chamber; A refrigerator compartment side branch passage extending from the freezer compartment suction passage to the side of the refrigerator compartment; A refrigerating chamber side discharge port formed in a middle or an end of the refrigerating chamber side branch passage and discharging cold air into the refrigerating chamber; A refrigerating compartment rear suction port for sucking cold air having a temperature rise in the refrigerating compartment; A refrigerating chamber return flow path connected to the cooler chamber from the refrigerating chamber rear suction port; It proposes a cold air circulation structure of the refrigerator comprising a.

Further, at the branch points of the freezer compartment return passage and the refrigerating compartment side branch passage, the freezer compartment suction passage and the freezer compartment return passage are opened and the refrigerating compartment side passage is closed, or the freezer compartment suction passage and the freezer compartment return passage and the refrigerating compartment side branches. It is preferable that the selective opening and closing means for opening all the flow paths is additionally provided.

In addition, a temperature sensor mounted inside the refrigerating chamber; When the temperature inside the refrigerating compartment is higher than the set temperature by the signal transmitted from the temperature sensor, driving the selective opening and closing means to open the side branch flow path of the refrigerating compartment and the temperature inside the refrigerating compartment is lower than the set temperature. A control unit for driving the selective opening and closing means to close the refrigerating compartment side branch passage; It is preferable that it is additionally provided.

In addition, it is preferable that a plurality of the refrigerating chamber side discharge ports and the refrigerating chamber rear suction ports are formed to suck and discharge cold air into respective spaces partitioned by the shelves.

Further, the refrigerating chamber side branch flow path and the refrigerating chamber side discharge port are effectively formed on each of the left and right inner sides of the refrigerating chamber.

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

4 to 7 illustrate the cold air circulation structure of the refrigerator according to the present invention, FIG. 4 is a longitudinal sectional view showing the structure of the entire refrigerator, and FIG. 5 is a cross sectional view showing the structure of the cold air flow path inside the barrier. Is an enlarged sectional view of an essential part showing the state in which the refrigerating chamber side branch flow path is closed, and FIG.

As shown, the cold air circulation structure according to the present invention includes a freezer compartment suction port 101 formed on the bottom surface of the freezer compartment 2; A freezer compartment suction passage 102 extending from the freezer compartment suction port 101; A freezer compartment return passage 103 branched from the freezer compartment suction passage 102 and connected to the cooler chamber 1; A refrigerator compartment side branch passage 104 branching from the freezer compartment suction passage 102 and extending to the side of the refrigerator compartment 2; A refrigerating chamber side discharge port 110 formed at a middle or an end of the refrigerating chamber side branch passage 104 to discharge cold air into the refrigerating chamber 2; A refrigerator compartment back suction port 120 for sucking cold air having a temperature rise in the refrigerator compartment; A refrigerator compartment return passage 105 connected to the refrigerator compartment 1 from the refrigerator compartment back suction port 120; It is configured to include.

Selective opening and closing means 130 is mounted at the branch points of the freezer compartment return passage 103 and the refrigerating compartment side branch passage 104, and the inside of the refrigerating compartment 2 is configured to automatically control the driving of the selective opening and closing means 130. A temperature sensor (not shown) and a controller (not shown) are provided.

The refrigerator compartment side discharge port 110 and the refrigerator compartment rear suction port 120 are formed in plural to suck and discharge cold air into respective spaces partitioned by the shelf 9, and the refrigerator compartment side branch passage 104 and the refrigerator compartment side discharge port 110 are provided. Are respectively formed on the inner left and right sides of the refrigerating chamber 2.

Hereinafter, the overall structure and operation of the entire refrigerator having a cold air circulation structure according to the present invention will be described.

The refrigerator according to the present invention is partitioned into a freezer compartment (2) and a refrigerating compartment (4) by a barrier (5) filled with a heat insulating material, a cooler chamber (1) is formed on the rear side of the freezer compartment (2), and the freezer compartment (2) and The front of the refrigerating chamber 4 is provided with doors 20 and 40 to be opened and closed.

The heat exchange is performed in the evaporator 6 through which the low temperature and low pressure refrigerant passes, and the cooled cold air is supplied to the freezing chamber 2 through the shroud 12 by the axial flow fan 8 and stored therein. The heat becomes relatively high by heat exchange with the air, and the high temperature air moves to the freezer compartment suction flow path 102 through the freezer compartment suction port 101.

As a result of the detection of the temperature sensor (not shown), when the temperature inside the refrigerating compartment 4 is lower than or equal to the set temperature, the selective opening and closing means 130 closes the refrigerating compartment side branch passage 104 under the control of the controller (not shown). The cold air moved to the freezer compartment suction flow path 102 is returned to the cooler chamber 1 by the suction action of the blower fan 8 via the freezer compartment return flow path 103.

On the other hand, when the temperature detection sensor (not shown) as a result, when the temperature inside the refrigerating chamber (4) is higher than the set temperature, under the control of the control unit (not shown), the selective opening and closing means 130 to open the refrigerating chamber side branch passage 104 Since it is open, the cold air moved to the freezer compartment suction passage 102 is discharged into the refrigerating chamber 4 through the refrigerating chamber side branch passage 104 and the refrigerating chamber side discharge port 110.

The cold air supplied to the refrigerating compartment 4 becomes relatively high by heat exchange with the food stored therein, and the hot air is sucked through the inlet 120 of the refrigerating compartment and is sucked by the blower fan 8. It returns to the cooler chamber 1 through the refrigerating chamber return flow path 105.

The present invention does not provide a separate flow path for supplying cold air from the cooler chamber to the refrigerating compartment, and provides cold air to the refrigerating compartment through the refrigerating chamber side branch passage and the side discharge port, and circulates the refrigerating compartment. It is designed to directly return to the cooler chamber through the rear inlet of the refrigerating chamber and the refrigerating chamber return flow path, which simplifies the cold air circulation path of the refrigerator and reduces the resistance of the cold air flow path that supplies cold air to the inside of the refrigerator. It is possible to provide a more efficient cold air circulation structure of the refrigerator, such as to reduce noise by preventing.

Claims (5)

And a refrigerator compartment formed at a rear side of the freezer compartment and a refrigerator compartment formed at a lower side of the freezer compartment and separated by a plurality of shelves so as to be separated by the freezer compartment and the barrier, wherein the cold air supplied from the cooler compartment is inside the freezer compartment and the refrigerator compartment. In the refrigerator having a cold air circulation structure for returning to the cooler chamber after circulating again, A freezer compartment suction port formed on a bottom surface of the freezer compartment; A freezer compartment suction passage extending from the freezer compartment suction port; A freezer compartment return passage branched from the freezer compartment suction passage and connected to the cooler chamber; A refrigerator compartment side branch passage extending from the freezer compartment suction passage to the side of the refrigerator compartment; A refrigerating chamber side discharge port formed in a middle or an end of the refrigerating chamber side branch passage and discharging cold air into the refrigerating chamber; A refrigerating compartment rear suction port for sucking cold air having a temperature rise in the refrigerating compartment; A refrigerating chamber return flow path connected to the cooler chamber from the refrigerating chamber rear suction port; Cold air circulation structure of the refrigerator comprising a. The method of claim 1, At the branch points of the freezing compartment return passage and the refrigerating compartment side branch passage, the freezing compartment suction passage and the freezer compartment return passage are opened and the refrigerating compartment side passage is closed, or the freezer compartment suction passage, the freezer compartment return passage and the refrigerating compartment side passage are Cold air circulation structure of the refrigerator, characterized in that the additional opening and closing means is further provided to open all. The method of claim 2, A temperature sensor mounted inside the refrigerating compartment; When the temperature inside the refrigerating compartment is higher than the set temperature by the signal transmitted from the temperature sensor, driving the selective opening and closing means to open the side branch flow path of the refrigerating compartment and the temperature inside the refrigerating compartment is lower than the set temperature A control unit for driving the selective opening and closing means to close the refrigerating compartment side branch passage; Cold air circulation structure of the refrigerator, characterized in that further provided. The method of claim 1, And a plurality of the refrigerating chamber side discharge ports and the refrigerating chamber rear suction ports are formed to suck and discharge cold air into respective spaces partitioned by the shelves. The method of claim 4, wherein The refrigerator compartment side branch passage and the refrigerator compartment side outlets are formed in the left and right sides of the inside of the refrigerator compartment, respectively.