KR20040083547A - Cool air circulating system in refrigerator - Google Patents

Abstract

PURPOSE: A device for circulating chilled air of a refrigerator is provided to make the temperature distribution even to improve the refrigerating efficiency. CONSTITUTION: A device for circulating chilled air of a refrigerator includes a million wall formed in a main body for defining a freezer compartment and a refrigerating compartment formed at both sides in the main body, and having a chilled air supply channel for supplying chilled air to the refrigerating compartment and a chilled air suction channel for recovering the chilled air. A damper is formed in the chilled air supply channel for increasing or decreasing the chilled air. A discharge duct(142) is connected to the chilled air supply channel and formed with at least one or more ventilation holes for receiving the chilled air and discharging the chilled air to the inside of the refrigerating compartment. Right and left chilled air guide channels(144) are respectively connected to the discharge duct for guiding the chilled air respectively via right and left ventilation holes(144a). A refrigerating compartment blowing fan(145) is mounted with a distance from the discharge duct in the duct and rotates for inhaling the chilled air from the right or left ventilation holes and discharging the chilled air to the left or right ventilation holes.

Description

Cold air circulator in refrigerator {COOL AIR CIRCULATING SYSTEM IN REFRIGERATOR}

The present invention relates to a cold air circulation device of a refrigerator, and more particularly, a refrigerator cooling fan is installed in a discharge duct inside a discharge duct in which cold air of a freezer compartment is introduced and discharged into a refrigerator compartment through left and right holes. The present invention relates to a cold air circulation system of a refrigerator which allows air to be evenly distributed.

In general, a refrigerator is divided into a freezer compartment for storing ice-making containers and frozen foods at a set temperature, and a refrigerating compartment in which refrigeration objects are stored, and a refrigeration cycle device is installed therein and circulated in a refrigeration cycle of evaporation, compression, condensation, and expansion. In the circuit, the evaporator absorbs the heat from the outside to keep the inside of the refrigerator frozen and refrigerated. In the conventional refrigerator, a refrigerator is generally installed on the upper part of the refrigerator compartment, but a large refrigerator is large in capacity. Side by side type refrigerators are frequently used in which refrigerators and freezers are installed on the left and right to store more food.

1 is a perspective view partially illustrating a conventional side-by-side type refrigerator, and as shown in FIG. 1, a side-by-side type refrigerator includes a freezer compartment 10 for freezing and storing food in an interior accommodation space of the main body 1. ) And a million wall 30 is partitioned between the refrigerating compartment 20 for storing food, and the freezer compartment 10 and the refrigerating compartment 20 formed on the left and right sides of the main body 1, and the freezing compartment 10. And a door (not shown) installed and opened at the front of the refrigerating chamber 20.

A fan 12 is installed to circulate the cooled cold air through the evaporator (not shown) mounted at the rear upper portion of the freezer compartment 10 and circulates therein, and the fan 12 is provided on the front surface of the fan 12. The fixing member 11 is formed with an orifice for discharging the cold air introduced by the rotation of the rotation, and the shield fan 13 for discharging the cold air to the ice maker 15 on the front surface of the fixing member 11 to generate ice. And a cover auger 14 for discharging cold air into the freezing compartment 10 at a lower portion of the fan 12, and the shield fan 13, the cover auger 14, and the mullion wall 30. You will have a certain space consisting of).

A cold air supply path 31 is formed at an upper portion of the mullion wall 30 so that the cold air discharged by the fan 12 flows into the refrigerating chamber 20, and the cold air is circulated in the refrigerating chamber 20. Is introduced into the evaporator (not shown) is formed a cold air suction path 32 to be cooled again.

In the refrigerating compartment 20, a plurality of shelves 21 on which food can be placed are mounted at regular intervals, and the refrigerating compartment 20 communicates with the cold air supply passage 31 at an upper portion of the refrigerating compartment 20. The discharge duct 22 in which the discharge port 23 for supplying cold air is formed is mounted.

When power is applied to the side-by-side type refrigerator configured as described above, a compressor (not shown) constituting a refrigeration cycle is driven to compress cold air, and the refrigeration cycle starts operation.

The temperature of the evaporator (not shown) is lowered by the operation of the freezing cycle to form cold air, and the fan 12 mounted on the freezer compartment 10 is operated to operate the shield fan 13. The cold air is sent to an ice maker 15 which freezes ice to make ice, and the cold air through the cover auger 14 is supplied to the freezing chamber 10 to circulate inside the freezing chamber 10 and cool the inside of the freezer.

In addition, as shown in FIG. 2, a part of the cold air supplied by the fan 12 flows into the cold air supply path 31 formed on the mullion wall 30, and the introduced cold air flows into the cold air supply path. Discharged into the refrigerating chamber 20 through the discharge port 23 formed in the discharge duct 22 communicated with the 31 is circulated in the refrigerating chamber 20.

The cold air circulated in the refrigerating chamber 20 is returned to the evaporator through the cold air suction path 32 and has a circulation structure discharged into the refrigerator through the fan 12.

When the temperature inside the freezer compartment 10 and the refrigerating compartment 20 reaches a predetermined temperature in the structure in which the cold air is circulated as described above, the operation of the compressor is stopped, and at the same time, the operation of the refrigeration cycle is stopped. When the temperature of 20 rises above the set temperature, the compressor is driven again to operate the refrigeration cycle.

This operation is repeated to cool the inside of the refrigerator below a certain temperature.

However, in the side-by-side type refrigerator configured as described above, since cold air for cooling the refrigerating compartment 20 is discharged only through the discharge port 23 of the discharge duct 22 formed on the refrigerating compartment 20, The inside of the refrigerating compartment 20 is not evenly cooled, the temperature distribution for each compartment partitioned by the shelf 21 is greatly different, and the circulation of the cold air is also not smooth.

In addition, since the cold air is discharged only from the upper portion of the refrigerating chamber 20, there is a problem that the cooling rate for cooling the inside of the refrigerating chamber 20 as a whole less than a predetermined temperature is slow.

An object of the present invention devised in view of the above point is to provide a cold air circulation device of a refrigerator to improve the cooling efficiency by forcibly circulating the cold air inside the refrigerating chamber.

1 is a perspective view partially showing a side by side type refrigerator according to the related art,

FIG. 2 is a vertical cross-sectional view of a refrigerator compartment of the side-by-side type refrigerator of FIG. 1;

3 is a front view showing an internal structure of a refrigerating compartment equipped with a cold air circulation system of a refrigerator according to one embodiment of the present invention;

4 is a longitudinal sectional view showing a refrigerator compartment of the refrigerator shown in FIG. 3;

5 and 6 are cross-sectional views taken along line "A-A" shown in FIG.

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

20: cold room 30: mullion wall

141: damper 142: discharge duct

143: left side cooling air flow passage 143a: left side passage

144: right side cooling air flow path 144a: right side passage

145: Refrigerated chamber blowing fan

The cold air circulation device of the refrigerator for achieving the object of the present invention as described above partitions the interior of the body into a freezer compartment and a cold compartment, the mullion wall formed with a cold air supply path for supplying cold air to the refrigerating chamber side and a cold air suction path for recovering cold air; A discharge duct formed in the cold air supply path, a damper for adding or subtracting cold air, a discharge duct connected to the cold air supply path, and having at least one passage formed therein for discharging cold air into the refrigerating chamber; A left cold air guide passage communicating with the air and guiding the cold air through a left vent formed on the left side wall of the refrigerating compartment, and a right cold air guide passage communicating with the discharge duct and guiding the cold air through the right vent formed on the right side of the refrigerating compartment, It is installed so as to space the inside of the discharge duct and rotates at the same time to suck in the cold air to the left passage through the Or by sucking the cool air in the right tonggu consists are provided with a refrigerating compartment blowing fan to forcibly blow the cool air to be discharged to the left tonggu.

In addition, the left passage and the right passage having a predetermined interval on the left side and the right side is formed at least one or more in each compartment of the refrigerating compartment, it is preferable that the passage inner diameter is formed to gradually increase toward the lower side of the refrigerating compartment.

Hereinafter, a cold air circulation system of a refrigerator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings, and the same parts as in the conventional structure will be described with the same reference numerals.

In the cold air circulation device of the refrigerator which is one embodiment of the present invention, the configuration of the cooling device and the cold air supply device configured in the refrigerating chamber 10 is the same as the conventional configuration and the description thereof will be omitted and reference is made to FIG. 1. do.

3 is a front view illustrating an internal structure of a refrigerating compartment equipped with a cold air circulation system of a refrigerator according to an embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view illustrating a refrigerating compartment of the refrigerator illustrated in FIG. 3, and FIGS. 5 and 6. 4 is a cross-sectional view showing a section "AA" shown in Figure 4, the refrigerator equipped with a cold air circulation apparatus of an embodiment of the present invention as shown in the refrigerator to store food in the inner receiving space of the body (1) Million walls 30 are partitioned between the freezing chamber 10 and the refrigerating chamber 20 for storing food, and the freezing chamber 10 and the refrigerating chamber 20 formed on the left and right sides of the main body 1, and the freezing chamber. 10 and a door (not shown) installed and opened on the front of the refrigerating chamber 20.

A cold air supply path 31 is formed at an upper portion of the mullion wall 30 so that the cold air discharged by the fan 12 flows into the refrigerating chamber 20, and the cold air circulating in the refrigerating chamber 20 is formed at the lower portion of the mullion wall 30. A cold air suction path 32 is formed to flow into the evaporator (not shown) and recool.

Inside the refrigerating chamber 20, a plurality of shelves 21 on which food can be placed are mounted at regular intervals, and the cold air supply passage 31 is equipped with a damper 141 for adding or subtracting cold air. The discharge duct 142 including the damper 141 therein and connected to the cold air supply path 31 to discharge the cold air into the refrigerating chamber 20 is provided with a plurality of discharge ducts 142 formed therein. 20) It is mounted on the upper side. The inside of the discharge duct 142 is equipped with a refrigerating chamber blowing 145 which rotates at the same time and rotates and generates a forced blowing force.

The left side wall of the refrigerating compartment 20, that is, the surface of the million wall 30 has a predetermined interval and connects the inside of the discharge duct 142 with the left passage 143a formed in at least one compartment in each compartment of the refrigerating compartment 20. The left cold air guide passage 143 is formed to guide the cold air, the right side of the refrigerating chamber 20 has a predetermined interval and at least one right passage (144a) and the discharge duct formed in each compartment of the refrigerating chamber 20 ( 142 is formed by connecting the inside of the right side to guide the cold air guide 144. At this time, although the inside diameter of the passage of the left passage 143a and the right passage 144a is irrelevant, it is advantageous to increase the inside diameter of the passage toward the lower side of the refrigerating chamber 20, as shown, which is advantageous for the internal circulation of the cold air and the supply of cold air.

The cold air generation and the cold air supply method in the freezer compartment 10 during the operation of the refrigerator equipped with a cold air circulation device according to an embodiment of the present invention configured as described above have the same structure as the conventional air supply and circulation process of the cold compartment 20. More detailed description is as follows.

When the damper 141 is opened, a part of the cold air supplied to the refrigerating compartment 10 is introduced into the discharge duct 142 through the cold air supply path 31, and a part of the introduced cold air penetrates through the vent hole 142a. ) Is introduced into the refrigerating compartment through the inside, and part of the refrigerating compartment blowing fan 145 is introduced into the left side cold air flow passage 143 and guided to each of the refrigerating compartments through the left vent 143a, and part of which is not rotated. Pass through between the right and the cold air flow passage 144 is introduced and guided to each of the refrigerating compartment through the right passage (144a).

At this time, when the temperature inside the refrigerating compartment 20 is rapidly increased, the cold air blowing fan 145 is rotated to increase the amount of cold air flowing into the cold air supply passage 31 to quickly cool the inside of the refrigerating compartment 20. To be supplied.

When the cold air is supplied to the inside of the refrigerating compartment 20 as described above, and the internal temperature is maintained at an appropriate temperature or less, the damper 141 is operated to close the cold air supply passage 31 to block further inflow of cold air to prevent overcooling.

In addition, when the damper 141 is closed, when the refrigerating chamber blowing fan 145 rotates forward, the cool air inside the refrigerating chamber 20 is sucked through each left vent 143a and guided to the left cold guide flow passage 143. The discharge duct 142 may be introduced into the discharge duct 142 or may be introduced into the discharge duct 142 through a hole 142a formed at the left side of the refrigerating chamber blowing fan 145 in the drawing.

The cold air introduced into the discharge duct 142 is forcibly blown by the refrigerating chamber blowing fan 145 and discharged into the refrigerating chamber 20 through the vent 142a formed on the right side of the refrigerating chamber blowing fan 145 in the drawing, or Guided through the cold air flow path 144 is discharged into the refrigerating chamber 20 through the right passage 144a. The circulation process as described above is performed at regular time intervals to maintain the temperature distribution inside the refrigerating chamber 20 evenly.

Similarly, when the refrigerating compartment blowing fan 145 is rotated in reverse while the damper 141 is closed, the refrigerating compartment 20 is formed through the right vent 144a of each and the vent 142a formed on the right side of the refrigerator ventilating fan 145 in the drawing. The cold air inside is sucked in, and the sucked cold air is discharged into the refrigerating chamber through the air vent 142a and the left vent 143a formed on the left side of the refrigerating air blowing fan 145 in the drawing through the discharge duct 142 to circulate the cold air. This is to be done.

Thus, the cold air circulation device of the refrigerator according to the embodiment of the present invention is equipped with a refrigeration chamber blowing fan 145 inside the discharge duct 142 into which cold air is introduced, and communicates the discharge duct 143 with the left passage 143a. The left cold air guide passage 143 and the right cold air guide passage 144 communicating with the discharge duct 143 and the right passage 14a are formed to circulate the cold air in the refrigerating chamber 20, thereby reducing the temperature inside the refrigerating chamber 20. Is evenly distributed.

As described above, in the cold air circulation system of the refrigerator according to the present invention, a discharge duct in which a part of the cold air supplied to the freezing chamber is introduced is formed in the upper side of the refrigerating chamber, and the left cold air guide flow path communicating the discharge duct and the left passage is discharged. A right cold air flow guide channel communicating with the duct and the right channel is formed, and when the cold storage fan mounted inside the discharge duct rotates to force cold air, that is, sucks cold air through the left channel and discharges it to the right channel or the right channel. If the cold air is sucked through and discharged to the left passage, the cold air inside the refrigerating chamber is forced to circulate, thereby improving the cooling efficiency.

Claims (4)

A mullion wall that divides the inside of the main body into a freezing compartment and a refrigerating compartment, and has a cold air supply passage for supplying cold air to the refrigerating compartment and a cold air suction passage for recovering cold air; A damper for adding and subtracting cold air formed in the cold air supply path; A discharge duct connected to the cold air supply path and having at least one opening formed therein for discharging the cold air into the refrigerating chamber; A left cold air guide passage communicating with the discharge duct and guiding cold air through a left vent formed on a left side wall of the refrigerating compartment; A right cold air guide passage communicating with the discharge duct and guiding cold air through a right channel formed on a right side wall of the refrigerating chamber; It is mounted to space the inside of the discharge duct and rotates at the same time, the cold air intake to the left vent to discharge to the right passage, or the cold air to the cold vent to suck the cold air to the left vent is provided with a refrigerating chamber fan Cold air circulation device of the refrigerator characterized in that the configuration. The cold air circulation system according to claim 1, wherein the left passage and the right passage have a predetermined interval on the left side and the right side and are formed in at least one compartment in each compartment of the refrigerator compartment. The cold air circulation system according to claim 2, wherein the left side passage and the right side passage are formed such that the inside diameter of the passage increases gradually toward the lower side of the refrigerating chamber. The refrigerator according to claim 1, wherein the refrigerating air blowing fan is operated while the damper is closed.