KR100186453B1 - Multiduct structure of a refrigerator - Google Patents

Abstract

The present invention relates to a multi-duct structure of a refrigerator. In the related art, when a new high temperature load is introduced into a refrigerator compartment of a refrigerator, power is consumed because cold air is supplied to the entire refrigerator compartment. Since the cooling rate is slow because the load is overcooled and the centralized cooling of the new load is not performed, the present invention forms an auxiliary flow path on both sides of the suction flow path of the refrigerator, and according to the rotation of the motor in the suction flow path of the multi duct. By providing a rotatable plate-shaped baffle and forming a cold air discharge port that can be opened and closed by the rotational movement of the baffle in the middle and lower layers of the auxiliary flow path, when a new hot load is introduced into the middle and lower layers of the refrigerator according to its position. By intensively introducing cold air and rapidly cooling, it prevents waste of power and prevents overcooling of existing stored foods. Which intended to provide a multi-duct structure of the refrigerator.

Description

Multi-duct structure of the refrigerator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-duct structure of a refrigerator. More specifically, auxiliary flow paths are formed on both sides of a suction flow path of a refrigerator, and a plate-shaped baffle that rotates as the motor rotates is provided on the suction flow path of the multi-duct. By forming a cold air outlet opening and closing the opening and closing by the rotary motion of the auxiliary flow path in the middle and lower layers of the auxiliary flow path, the refrigerator can be cooled rapidly by intensively introducing cold air into the middle and lower layers of the refrigerator according to the position where the hot load is applied. Duct structure. An example of a general refrigerator is illustrated in FIG. 1, and the configuration thereof will be briefly described. The front of the refrigerator main body divided into the freezer compartment 1 and the refrigerating compartment 6 is provided with a door, a circulation fan 2 and an evaporator 3 are installed at the rear of the freezer compartment 1, and the refrigerating compartment 6 ) Is divided into upper, middle, and lower floors by several shelves, and a compressor 7 is installed in the machine room at the rear lower side of the refrigerating chamber 6.

A suction passage 4 is formed in the rear wall of the refrigerating compartment 6 to communicate with the freezing compartment 1, and a circulating cold air passage 5 is formed at the side of the suction passage 4 to communicate with the evaporator 3. The tracking cooling louver 9 is provided in the upper shelf of the refrigerator compartment 6.

In particular, the suction passage 4 has a configuration that is open to a constant size so that the cold air is supplied to the upper layer, the middle layer, the lower layer.

The cold air circulation structure of the refrigerator configured as described above is as follows.

When power is applied, the compressor 7 and the circulation fan 2 are driven to operate a refrigeration cycle.

By the operation of the refrigeration cycle, the temperature of the evaporator 3 provided at the rear of the freezing chamber 1 is lowered, and the circulation fan 2 provided at the upper part of the evaporator 3 supplies the cold cool air to the freezing chamber 1. Done.

A part of the cold air supplied to the freezing compartment 1 is circulated inside the freezing compartment 1, and then flows into the refrigerating compartment 6 through the suction passage 4, and is supplied to the tracer cooling louver 9 of the upper layer. The cold air is supplied to the upper, middle and lower floors of the refrigerating chamber 6 simultaneously by supplying cold air through the shelves.

At this time, the cold air supplied to the upper layer is selectively supplied to the left and right of the upper layer by the operation of the tracking cooling louver 9.

The cold air supplied to the refrigerating chamber 6 is returned to the evaporator 3 through the circulating cold air flow passage 5 by the suction of the circulation fan 2.

When the temperature inside the refrigerating chamber 6 reaches the set temperature in the structure in which the cold air is circulated as described above, the operation of the compressor 7 and the circulation fan 2 is stopped, and at the same time, the operation of the refrigeration cycle is stopped. When the temperature of 6) rises above the set temperature, the compressor 7 and the circulation fan 2 are operated again.

This operation is repeatedly performed while power is applied to keep the temperature of the refrigerating chamber 6 constant.

However, the refrigerator as described above, when a high temperature new load is introduced into the refrigerating compartment, since the cold air is supplied to the entire refrigerating compartment, power consumption is high, and accordingly, there is a disadvantage of supercooling the existing stable load as well as the new load.

In addition, there is a problem that the cooling rate is slow because the intensive cooling for the new load is not made, it has been required to compensate for this.

The present invention has been made in view of the above-described aspects, and the auxiliary flow paths are formed on both sides of the suction flow path of the refrigerator, and a plate-shaped baffle which is rotatable in accordance with the rotation of the motor is provided on the suction flow path of the multi duct, and the rotation of the baffle is performed. By forming a cold air outlet that can be opened and closed by the movement in the middle and lower layers of the auxiliary flow path, when a new high temperature load is introduced into the middle and lower layers of the refrigerator, the cold air is intensively introduced according to its location to rapidly cool the existing food. It is an object of the present invention to provide a multi-duct structure of a refrigerator capable of preventing overcooling and cooling hot food in a short time.

Another object of the present invention is to prevent waste of power due to the intensive supply of cold air.

1 is a longitudinal sectional view showing the configuration of a conventional refrigerator.

Figure 2 is a longitudinal cross-sectional view showing the configuration of the refrigerator of the present invention.

3 is a cross-sectional view showing the structure of the refrigerator multi-duct of the present invention.

4 is a left side view of the refrigerator multi-duct of the present invention.

5 is a right side view of the refrigerator multi-duct of the present invention.

6 is a state diagram for each operation condition of the baffle according to the present invention.

6 (a) is a state diagram in the case of rapid cooling of the lower floor of the refrigerating chamber.

6 (b) is a state diagram in the case of the refrigerating chamber uniform cooling and the upper left trace cooling.

Fig. 6 (c) is a state diagram when the refrigerator compartment is blocked by cold air.

Fig. 6 (d) is a state diagram when the refrigerating chamber uniform cooling is at the upper right tracking.

6 (e) is a state diagram in the case of rapid cooling of the middle layer of the refrigerating chamber.

* Explanation of symbols for main parts of the drawings

10: multi duct 11: motor

12: feed cam 13: feed lever

14: baffle 15: connecting rod

16, 16a: Slide 17: guide groove

20: discharge hole 30: auxiliary flow path

31, 31a: Butt 32, 32a: Cold air discharge port

In order to achieve the object of the present invention, an auxiliary flow path installed on both sides of the suction flow path, a motor for driving the tracking cooling louver and generating a driving force of the device, and fixed to the shaft of the motor to rotate the motor. A transfer cam installed in the auxiliary flow path to rotate by the auxiliary flow path, a baffle fixed to the rotation shaft of the transfer cam while being able to rotate and a cold air flow rate of the suction flow path, and the transfer cam constrained therein to move up and down according to the rotation of the transfer cam. A transfer lever moving, a connecting rod fixed to the transfer lever and inserted into the auxiliary flow path to move up and down according to the movement of the transfer lever, a slide fixed to the connecting rod to move up and down, and the slide including the cold storage room Muller of the refrigerator, characterized in that composed of secondary cold air discharge means for selectively flowing into the middle and lower layers of The duct structure is provided.

The cold air discharging means includes a cold air discharge port formed in the middle and lower layers of the side wall of the refrigerating chamber side of the auxiliary flow path, a slide which is inserted into the auxiliary flow path to move the cold air discharge port by moving up and down, and introduces cold air from the suction flow path into the auxiliary flow path. A multi-duct structure of a refrigerator is provided, which is composed of a butt hole formed in a middle layer and a lower layer on a rear surface of an auxiliary flow path.

The cold air discharge port formed in the lower layer of the refrigerating chamber communicates with the butt hole when the slide is located at the bottom dead center, and the cold air discharge port formed in the middle layer is formed so as to communicate with the butt hole when the slide is at the top dead center. Is provided.

Hereinafter, described in detail according to the embodiment shown in the accompanying drawings of the present invention as described above are as follows.

2 is a longitudinal sectional view of the refrigerator to which the multi-duct structure according to the present invention is applied, and the refrigerator according to the present invention includes a door at the front of the refrigerator main body divided into the freezing compartment 1 and the refrigerating compartment 6, respectively. A circulation fan 2 and an evaporator 3 are installed at the rear of the freezer compartment 1, and the refrigerating compartment 6 is divided into upper, middle, and lower layers by several shelves, and rear lower side of the refrigerating compartment 6. Compressor (7) is installed in the machine room, a suction flow passage (4) communicating with the freezing compartment (1) is formed inside the rear wall of the refrigerating compartment (6), and an evaporator (3) is provided on the side of the suction flow passage (4). ), A circulation cold air flow passage 5 is formed, and the configuration in which the tracking cooling louver 9 is provided on the upper shelf of the refrigerating chamber 6 is the same as in the related art.

3 is a longitudinal sectional view showing the structure of the multi duct of the refrigerator according to the present invention.

The multi-duct of the refrigerator of the present invention has a passage for supplying cold air to the refrigerating chamber 6 together with the suction channel 4 on both sides in front of the suction channel 4 for sending cold air from the freezing chamber 1 to the refrigerating chamber 6. An auxiliary flow path 30 is provided.

The upper end of the auxiliary flow path 30 is provided with a feed cam 12 fixed to the shaft of the motor 11 for driving the tracking cooling louver 9 is rotated in accordance with the rotation of the motor (11).

In addition, a plate-shaped baffle 14 is fixed to the rotation shaft of the transfer cam 12, and the baffle 14 is installed inside the suction flow passage 4 which sends cold air from the freezing chamber 1 to the refrigerating chamber 6 and transfers it. It rotates in accordance with the rotation of the cam 12.

Since the feed cam 12 has an eccentric rotation shaft and is inserted into the feed lever 13 having a long hole, the feed cam 12 fixed to the motor shaft rotates as described above. 13 is moved in the vertical direction as the cam 12 rotates.

4 is a left side view illustrating the structure of the multi duct of the present invention, and the guide groove 17 is disposed on the back of the auxiliary flow path 30 of the multi duct 10 so that the transfer lever 13 can move in the vertical direction as described above. ) Is formed.

In addition, the transfer lever 13, the connecting rod 15 is fixed to both sides, the connecting rod 15 is inserted into the auxiliary flow path 30 is moved in the vertical direction with the transfer lever 13.

In addition, the middle and lower ends of the connecting rod 15 is fixed to the plate-like slide (16, 16a) having the same width as the width of the auxiliary flow path (30).

On the other hand, in the auxiliary flow path 30, cold air discharge ports 32 and 32a are formed in the middle layer and the lower layer of the refrigerating chamber side wall surface, and as shown in FIG. 5, the back side of the auxiliary flow path 30 is cold air. Butt holes 31 and 31a are formed in the middle layer and the lower layer through which suction flows into the auxiliary passage 30 from the suction passage 4.

The slides 16 and 16a are located in the auxiliary flow path 30 between the cold air discharge ports 32 and 32a and the butts 31 and 31a to move and move the cold air discharge ports 32 and 32a selectively.

In addition, the cold air discharge port 32a formed in the lower layer of the refrigerating chamber 6 is formed to communicate with the butt hole 31a when the slide 16a is at the bottom dead center, and the cold air discharge port 32 formed in the middle layer is a slide ( 16 is formed to communicate with the butt hole 31 when the top dead center.

The operation of the multi-duct structure of the refrigerator according to the present invention configured as described above is as follows.

When the detected temperature of the temperature sensor attached to the freezer compartment 1 and the refrigerating compartment 6 is higher than the set temperature, the refrigeration cycle composed of the compressor 7 and the evaporator 3 is operated and the circulation fan 2 is operated. The circulating cold air introduced by the circulating fan 2 passes through the evaporator 3 and is cooled by heat exchange, and a part of the cold air is sucked in the multi duct 10 installed in the refrigerating chamber 6. Through the upper, middle, and lower layer openings formed in the suction flow path (4), the upper layer is supplied to the tracking cooling system, the middle and lower layers are introduced into the refrigerating chamber (6) through the shelves to perform the cooling operation It is sucked into the evaporator 3 through the circulation cold air flow path 5 through the plurality of discharge holes 20 formed at the left and right sides of the 10.

In this process, when the temperatures in the freezing chamber 1 and the refrigerating chamber 6 are lowered and lower than the set temperature, the operation of the compressor 7 and the circulation fan 2 which are the old products of the refrigerating cycle are stopped.

The accompanying Figure 6 shows the case-by-case operation of the cold air control of the baffle according to the present invention. First, as shown in FIG. 4 (a), when the temperature in the refrigerating chamber 6 is higher than the set temperature and the temperature of the lower layer is particularly high among the temperatures between the floors, the motor 11 rotates 90 ° to the left and accordingly The feed cam 12 fixed to the motor shaft rotates left, and at the same time the baffle 14 also rotates to stand vertically.

As described above, when the baffle 14 is erected vertically in the suction channel 4, the cold air inflow cross-sectional area of the suction channel 4 is maximized, and the cold air thus introduced is sent to the upper, middle and lower layers of the refrigerating chamber 6. You lose.

At this time, the transfer lever 13 inserted around the transfer cam 12 is moved along the guide groove 17 formed on the rear surface of the auxiliary flow path 30, the connecting rod 15 fixed to the transfer lever 13 And slides 16 and 16a fixed thereto also move downward to open the cold air discharge ports 32a formed at the lower end of the auxiliary flow path 30, so that the lower layer of the refrigerating chamber 6 is rapidly cooled.

4 (b) shows that the motor 11 rotates a certain angle to the left when the temperature in the refrigerating chamber 6 is higher than the set temperature and the temperature difference between the floors is equal to or less than a predetermined value and the left side of the upper and left sides of the upper compartment is high. Accordingly, when the feed cam 12 rotates left and the baffle 14 also rotates to be inclined at a predetermined angle, the suction flow passage 4 opens so that cool air flows through the suction flow passage 4.

At this time, when the transfer lever 13 moves downward by a left rotation of the transfer cam 12 in accordance with the rotation of the transfer cam 12, accordingly, butt holes 31 and 31a formed in the middle layer and the lower layer of the auxiliary flow path 30. ) Is closed so that cold air is not supplied through the auxiliary flow path 30.

At the same time, the louver 9 provided in the upper layer of the refrigerating chamber 6 moves to the left side of the refrigerating chamber 6.

In this case, the cold air inflow cross-sectional area of the suction flow passage 4 becomes a standard state with uniform cooling, and the cold air flows in through the upper, middle, and lower layer openings, and the upper air flows out to the left side through the tracking cooling system, and the lower middle floor opens the shelf. Through the cold air will come out evenly.

4 (c) shows the operation state of the baffle when the temperature in the refrigerating chamber reaches the set temperature, and when the inflow of cold air is not necessary, the position of the baffle 14 is lowered to the suction flow path 4. By blocking the coming cold air, the cold air is not discharged to the opening formed in the multi duct 10.

4 (d) shows that the baffle 14 rotates slightly to the right so that the cold air flowing into the refrigerating chamber 6 sends cold air to the right through the upper tracer cooling system, and the middle and lower floors distribute the cold air evenly through the shelves. .

4 (e) shows the case where the temperature of the refrigerator compartment is higher than the set temperature and the temperature of the middle layer is particularly high among the temperatures between the floors. When the motor 11 rotates 90 ° to the right, the feed cam 12 fixed to the motor shaft is At the same time, since the baffle 14 also rotates and is erected vertically, the cold air inflow cross-sectional area of the suction flow passage 4 becomes the maximum, and the amount of cold air inflow increases.

At this time, the transfer lever 13 moves upward along the guide groove 17 formed in the multi duct 10 according to the right turn of the transfer cam 12, and the connecting rod 15 fixed to the transfer lever 13 and the excitation The slides 16 and 16a fixed thereto are also moved upward to open the cold air outlet 32 formed in the middle layer of the auxiliary flow path 30, so that rapid cooling of the middle layer is achieved.

According to the multi-duct structure of the refrigerator according to the present invention, when high-temperature new loads are introduced into the middle and lower floors in comparison with the multi ducts which can selectively send cold air only to the left and right sides of the refrigerating chamber, each floor is intensively cooled. It can reduce the power consumption and prevent the cooling of the existing stable load while reducing the cooling time.

Claims (3)

An auxiliary flow path installed on both sides of the suction flow path, a motor for driving the tracking cooling louver and generating a driving force of the device, a transfer cam installed in the auxiliary flow path fixed to the shaft of the motor to rotate by rotation of the motor; And a baffle fixed to the rotary shaft of the transfer cam to adjust the amount of cold air flowing into the suction channel, the transfer cam being constrained therein to move up and down according to the rotation of the transfer cam, and the transfer lever. A connecting rod fixed and inserted into the auxiliary flow path and moving up and down according to the movement of the transfer lever, a slide fixed and connected to the connecting rod and moving up and down, and the slide to selectively introduce cold air into the middle and lower layers of the refrigerating chamber. Multi-duct structure of the refrigerator, characterized in that consisting of cold air discharging means. According to claim 1, wherein the auxiliary cold air discharging means is a cold air discharge port formed in the middle and lower layers of the wall side of the refrigerating chamber side of the auxiliary flow path, a slide for opening and closing the cold air discharge opening by inserting inside the auxiliary flow path up and down, and the cold air suction flow path The multi-duct structure of the refrigerator, characterized in that it comprises a butcher hole formed in the middle and lower layers of the back of the auxiliary flow path to flow into the auxiliary flow path. The cold air discharge port formed in the lower layer of the refrigerating chamber communicates with the butt hole when the slide is at the bottom dead center, and the cold air discharge port formed in the middle layer is formed so as to communicate with the butt hole when the slide is at the top dead center. Multi-duct structure of the refrigerator.