KR20000005840U - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator, the purpose of which is a simple structure using a single fan and a motor to achieve a uniform distribution of the refrigerator compartment cold air, so as to reduce the resistance of the cold air guided to both sides of the evaporator, both sides of the refrigerator compartment evaporator It is to provide a refrigerator provided with a duct symmetrically provided in the discharge duct and a scroll duct between the discharge duct and the evaporator is bent in the rotational direction of the blower fan installed therein to smoothly guide the discharge of cold air.

The present invention is provided on both sides of the outside of the evaporator, the suction inlet is formed at the upper end and the lower end is in communication with the evaporator, provided on both sides between the suction duct and the evaporator, a plurality of cold air discharge ports are formed in the vertical direction and the upper end is in communication with the evaporator Discharge duct,

Both sides of the cooling air inlet opening to the rear side to guide the cold air generated by the evaporator to the discharge duct and the cold air blown by the blower fan to the outer both sides of the cold air inlet in both directions of the blowing fan Cold air supply for a cold room provided with a scroll duct which is reduced to the upper portion of the guide duct communicating with the upper end of the discharge duct, the cold air inlet of the scroll duct is installed to rotate inside the scroll duct to suck the cold air to blow to the guide unit It is a structure provided with an apparatus.

Description

Refrigerator

The present invention relates to a refrigerator, and more particularly, to a refrigerator compartment cold air supply device that sucks the refrigerator compartment air into a cold compartment and supplies it to the refrigerator compartment again.

In general, the refrigerator is configured to supply the cold air obtained by performing the freezing cycle to the freezer compartment and the refrigerating compartment to keep the food stored therein for a long time. Recently, the refrigerator maintains an optimal state for the food storage form of the freezer compartment and the refrigerating compartment. Independent cooling refrigerators have been proposed that have separate evaporators installed in the freezer compartment and the refrigerating compartment.

1 is a side cross-sectional view schematically showing such a refrigerator. As shown in the drawing, the independent cooling refrigerators are provided with cold air supply devices 30 and 40 separately behind the freezing compartment 10 and the rear side of the refrigerating compartment 20, respectively. The freezer compartment 10 is provided with an evaporator 31 and a blower fan 42 in the cold air supply device 30. The freezer compartment 10 sucks air from the freezer compartment 10 into the evaporator 31 and passes through the freezer compartment. Forced air again.

The cold air supply device 40 of the refrigerating chamber 20 is formed above the rear wall. Here, the evaporator 41 and the blowing fan 42 for blowing the cold air to the front side are also provided above the evaporator 41. In the front part of the evaporator 41, an inlet port 43 into which the refrigerating chamber 20 air is sucked and a discharge port 44 through which cold air is discharged are formed. A cold air distribution duct 45 having 46 arranged up and down is installed at the center of the rear wall surface. Inside the cold air distribution duct 45, a rotary blade 47 that rotates by a separate motor is incorporated.

Therefore, when the blowing fan 42 and the rotary blade 47 of the refrigerating compartment 20 is rotated, the air in the refrigerating compartment 20 is introduced into the lower part of the evaporator 41 through the inlet 43, and the cold air generated while passing through the inlet port 43. Is evenly supplied to the refrigerating chamber 20 through the discharge port 44 and the cold air distribution discharge port 46 by the forced blowing force of the blowing fan 42 and the rotary blade 47. In particular, by driving the rotary blade 47 built in the cold air distribution duct 45, evenly distributed cold air in every corner of the refrigerating chamber 20, rotates so as not to escape the cold air even if the door 21 is opened to intercept cold air The refrigerating chamber 20 temperature is kept constant.

However, such an independent cooling refrigerator required a blowing fan, a rotor blade, and a respective motor to drive the cold air of the refrigerator compartment evaporator uniformly to the refrigerator compartment. As a result, the assembly process is complicated, the manufacturing cost is increased, and the power consumption of the refrigerator is increased due to the motors being driven, thereby reducing the power consumption rating.

The present invention is to solve this problem, the object of the present invention is a simple structure using a single fan and a motor to achieve a uniform distribution of cold air in the refrigerator compartment, can reduce the resistance of the cold air guided to both sides of the evaporator. Discharge ducts and suction ducts are symmetrically provided on both sides of the refrigerating chamber evaporator, and a curved duct is formed between the discharge duct and the evaporator in a direction of rotation of a blower fan installed therein to smoothly guide discharge of cold air. To provide a refrigerator.

1 is a side cross-sectional view showing a conventional refrigerator.

Figure 2 is a side cross-sectional view showing the overall structure of the refrigerator according to the present invention.

Figure 3 is a front view schematically showing a refrigerator compartment of the refrigerator according to the present invention.

Figure 4 is a perspective view showing a blowing fan and a scroll duct according to the present invention.

5 is a perspective view showing another embodiment according to the present invention.

Explanation of symbols on the main parts of the drawings

120: refrigerator 310: evaporator 320, 400: blowing fan

331,332: discharge duct 341,342: suction duct 350: evaporator cover

390: scroll duct 391: guide part 393: cold air inlet

The present invention for achieving the above object is a refrigerator formed with a cold air supply unit is installed on the rear wall of the refrigerating chamber is built in the evaporator on the center so that the freezer compartment and the refrigerating compartment is partitioned therein to supply cold air to the refrigerating compartment. The cold air supply device includes a suction duct provided at both outer sides of the evaporator and formed at an upper end thereof, and having a lower end communicating with the evaporator, and provided at both sides between the suction duct and the evaporator. A discharge duct formed at an upper end thereof to communicate with the evaporator, and a cold air inlet hole which is opened rearward to guide the cold air generated in the evaporator by the discharge duct and cold air blown by the blower fan to both sides of the cold air inlet hole; It can be reduced in both directions to guide the fans in both directions. For example, a scroll duct made up of a guide part communicating with an upper end of the discharge duct, and a blowing fan installed to be rotatable inside the scroll duct to suck cold air into the cold air inlet hole of the scroll duct and blow it into the guide part. .

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a side cross-sectional view showing the overall structure of the refrigerator according to the present invention, Figure 3 is a front view schematically showing a refrigerator compartment, Figure 4 is a perspective view showing a blowing fan and a scroll duct. And Figure 5 is a perspective view showing another embodiment according to the present invention.

First, an embodiment according to the present invention will be described with reference to FIGS. 2, 3, and 4 as follows. As shown in the figure, the inside of the main body 100 forming an outer shape is partitioned up and down by the intermediate partition 150, the freezer compartment 110 is formed on the upper side, and the refrigerating chamber 120 is formed on the lower side. In addition, a plurality of shelves 160 are installed in the freezing compartment 110 and the refrigerating compartment 120 to store and store food, and a vegetable box 170 is provided below the refrigerating compartment 120. In addition, the doors 130 and 140 are hinged to the front of the main body 100 in a rotatable manner to open and close the freezing compartment 110 and the refrigerating compartment 120.

On the other hand, in the rear of the freezing chamber 110 and the refrigerating chamber 120, the cold air supply device (200, 300) for generating and supplying the cold air is configured separately.

First, the cold air supply device 200 for the freezer compartment is installed on the rear wall of the freezer compartment 110, an evaporator 210 for generating cold air, a circulation fan 220 provided at the center of the upper side of the evaporator 210 to force cold air, It consists of a motor 230 for driving the circulation fan 220 and the evaporator cover 240 to cover them, etc., the cold air discharge port 241 in which the cold air of the evaporator 210 is discharged to the freezing chamber 110 on the upper part of the evaporator cover 240. ) Is provided, and an air inlet 242 through which air in the freezer compartment 110 flows into the evaporator 210 is formed.

In addition, the cold air supply device 300 for a refrigerating compartment is a characteristic component of the present invention, and is configured to discharge cold air uniformly throughout the refrigerating compartment 120. For this purpose, a rectangular evaporator is formed on the rear wall center of the refrigerating compartment 120. The 310 is installed upright, which is covered by the cover insulation 351 and the evaporator cover 350. The upper part of the evaporator 310, the motor 321 and the blowing fan to suck the air of the refrigerating chamber 120 to the lower part of the evaporator 310 and forcibly blows the cool air generated while passing through the evaporator 310 to the refrigerating chamber 120. 320 is provided.

The motor 321 is fixedly installed on the rear side of the refrigerating compartment, and is provided to drive the motor shaft protruding toward the refrigerating compartment when power is applied, and the motor cover 326 is provided at the front thereof to be protected from moisture.

The blowing fan 320 is a turbo fan provided in a crossflow type, and sucks cold air generated from the rear lower side to cool the air in both sides by an evaporator cover 350 and a scroll duct 390 to be installed in front. It is prepared to blow air. The blowing fan 320 is provided in front of the shaft portion 320a and the shaft portion 320a provided to be coupled to the motor shaft, and a cover portion 320c provided with an inner side bent from the rear side in a lateral direction, and The outer peripheral rear side of the cover portion (320c) is installed at an angle orthogonal to the shaft portion (320a) and consists of a plurality of wing portions (320b) that are provided to be bent in the direction of rotation.

That is, the shaft portion 320a is provided with a circular rod, and a rear portion of the shaft portion 320a is provided with a groove not shown so that the rotation shaft of the motor 321 can be inserted and coupled therebetween, and the shaft portion 320a and the wing portion 320b are spaced apart. As a result, the cool air on the rear side flows in between them and is guided by the curved inner surface of the cover portion 320c to blow the cool air laterally by the rotational force of the wing portion 320b. In the cross flow type blowing fan 320, the larger the number of the wing portions 320b, the larger the air volume can be obtained. In proportion to this, the load transmitted to the motor 321 also increases, so the number of the wing portions 320b is desired. The air volume is adjusted to match the output of the motor 321.

On the other hand, a scroll duct 390 is provided on the outside of the blowing fan 320 to guide the blowing force generated in the blowing fan 320 in both directions. The scroll duct 390 is installed on the upper side of the evaporator 310, and is provided with a cold air inlet hole 393 in the center so that the cold air flows in the rear and moves forward. The rear side of the cold air inlet hole 393 is provided. The motor cover 326 is provided with a motor shaft protruding forward. The tip of the motor shaft extends in front of the cold air inlet hole 393 so that the blower fan 320 coupled thereto is positioned in front of the cold air inlet hole 393 so that the evaporator 310 passes through the cold air inlet hole 393. The generated cold air is inhaled. A guide part 391 is provided outside the blowing fan 320 provided in front of the cold air inlet hole 393 to guide the sucked cold air in both directions. The guide portion 391 is bent in the rotational direction of the blowing fan 320 to reduce the resistance of the cold air blown from the blowing fan 320 and at the same time to concentrate on both sides to achieve a rapid movement of cold air.

That is, when the guide portion 391 is rotated counterclockwise to generate suction force from the rear of the blowing fan 320 and generate blowing force forward, the guide portion 391 of the upper left side is wing portion 320b. Similarly, the circumference of the tip is gradually extended to the left side so that the resistance decreases when the blowing force generated in the blowing fan 320 is moved from the upper left side to the lower left side. In addition, the lower left guide portion 391 protrudes upward along the circumference of the blowing fan 320 to reduce the flow path of the cold air so that the cold air blown to the left side from the blowing fan 320 is concentrated. In addition, the upper right side is provided in the same manner as the lower left side and the lower right side is provided in the same manner as the upper left side to perform the same action.

As a result, cold air generated in the evaporator 310 is guided to both sides of the scroll duct 390 by the cold air inflow hole 393 and the guide portion 391 by the suction force generated when the blower fan 320 is driven.

In addition, the left and right sides of the scroll duct 390, the discharge ducts 331 and 332 for discharging evenly the cold air forcedly blown in both directions by the blowing fan 320 to the refrigerating chamber 120 and the air in the refrigerating chamber 120 are evaporator 310. Suction ducts (341, 342) are guided to. A scroll duct 390 is provided at the center of the discharge ducts 331 and 332 to communicate with the installation space of the blower fan 320 and the motor 321, and both sides of the discharge ducts 331 and 332 are symmetrically along both ends of the evaporator 310. It extends downward. On both sides of the discharge ducts 331 and 332, a plurality of cold air discharge ports 333 spaced by a predetermined interval are arranged up and down. In addition, the centers of the suction ducts 341 and 342 are in communication with the lower end of the evaporator 310, and both sides thereof are extended in the upward direction to surround both sides of the discharge ducts 331 and 332.

That is, the upper ends of the suction ducts 341 and 342 extend symmetrically to the upper side of the rear wall of the refrigerating chamber 120, and the suction ports 343 are formed at both sides thereof so that the air in the refrigerating chamber 120 is suctioned at the uppermost end thereof. Accordingly, the air that has completed the heat exchange operation and rises above the refrigerating chamber 120 is introduced into the evaporator 310 through the suction port 343.

The cold air supply device 300 for the refrigerating compartment has a discharge plane (331,332) and the suction duct (341,342) symmetrically planarly formed at both ends of the evaporator 310, the inside of the refrigerating chamber 120 due to the installation of the cold air supply device Minimize the reduction in volume.

Hereinafter, another embodiment of the present invention will be described with reference to FIG. 5. Another embodiment of the present invention is described with the same name and the same reference numerals because the other components except for the blowing fan is the same as the embodiment.

The blowing fan 400 is installed inside the scroll duct 390. The blower fan 400 is an axial propeller fan, and is provided to blow cold air generated from the rear lower side to blow cold air in a lateral direction between the evaporator cover 350 and the scroll duct 390 provided forward. will be. The blower fan 400 includes a shaft portion 400a provided to be coupled to a motor shaft (not shown) and a plurality of wings 400b extending outwardly from the shaft portion 400a. The shaft portion 400a is provided with a circular rod, and a rear side of the shaft portion 400a is provided with a groove not shown so that the rotation shaft of the motor 321 can be inserted and coupled thereto, and a plurality of wing portions 400b are coupled to the outer circumferential side to the outside. Extended. The number of the wing portions 400b is adjusted to match the air volume and the output of the motor 321, three wings of the present invention 400b is provided in a balanced manner.

The operation of the refrigerator according to the present invention configured as described above is as follows. When the blowing fans 320 and 400 of the refrigerating compartment cold air supply device 300 are rotated by the motor 321, the air located above the refrigerating compartment 120 passes through the inlets 343 and the suction ducts 341 and 342. It is sucked, and flows along it and flows into the bottom of the evaporator 310. In addition, the introduced air is changed to cold while passing through the evaporator 310 by the suction blowing force of the blowing fans 320 and 400.

The cold air generated through the evaporator 310 passes through the cold air inlet hole 393 of the scroll duct 390 by the suction force of the blowing fans 320 and 400, and the cold air passing through the blowing fans 320 and 400 is blown fans 320 and 400. Since the front of the) is closed by the evaporator cover 350 is moved to both sides opened. At this time, since the cold air is collected in both directions in a state where the resistance is reduced by the guide portion 391, the cold air flows along the discharge ducts on both sides, and is discharged to the refrigerating chamber 120 through the cold air discharge port 333. At this time, the discharge duct is symmetrically extended along both side ends of the evaporator 310, and since the cold air discharge port 333 is formed up and down spaced apart a predetermined interval therein, inside the refrigerating chamber 120 and the shelf 160 It is fed to the kankan to cool the food evenly.

In addition, the air that has completed the heat exchange in the refrigerating compartment 120 rises to the upper space of the refrigerating compartment 120 by a natural convection phenomenon, and the air flows back into the evaporator 310 through the inlets 343 and the suction ducts 341 and 342. Is converted into a continuous cycle.

That is, the cold air supply device 300 for a refrigerating compartment according to the present invention collects cold air discharged laterally by the blowing fans 320 and 400 to both sides in a state in which resistance is reduced due to the scroll duct 390 to achieve rapid discharge. The cold air is evenly distributed and discharged in the refrigerating chamber 120 without a separate driving means, so that a temperature deviation does not occur regardless of the location of the refrigerating chamber 120 and the food stored therein is uniformly cooled. In addition, since the air having completely completed the heat exchange action is introduced back into the evaporator 310 through the suction port 343 located above the refrigerating chamber 120, the heat exchange efficiency of the refrigeration cycle is improved. In addition, by installing discharge ducts and suction ducts 341 and 342 around the evaporator 310 to planarize the cold air supply device 300, the internal volume of the refrigerating chamber 120 occupied by the cold air supply device 300 can be minimized. .

As described above in detail, the refrigerator according to the present invention is symmetrically centered on the evaporator provided in the rear wall of the refrigerating chamber, and the discharge duct formed in multiple stages of the cold air discharge port and the suction duct formed at the upper end of the suction port are formed in the entire refrigerating chamber without a separate operation means. Since the uniform cold air is discharged, there is an advantage that the temperature difference does not occur throughout the inside of the refrigerating compartment, and the heat exchange efficiency of the refrigeration cycle is improved.

In addition, the cool air discharged laterally by the blowing fans 320 and 400 is collected at both sides in a state where the resistance is reduced due to the scroll duct 390, and thus, the cool air is rapidly discharged without reflowing into the evaporator.

In addition, by planarizing the cold air supply device provided with a simple structure, it is possible to minimize the internal volume of the refrigerating chamber occupied by the cold air supply device.

Claims (4)

A refrigerator having a cold air supply device installed on a rear wall of a refrigerator compartment, having a body formed by partitioning a freezer compartment and a refrigerator compartment therein, and having an evaporator built in the center to supply cold air to the refrigerator compartment, The cold air supply device is provided on both sides of the outside of the evaporator, the suction inlet is formed at the upper end and the lower end is in communication with the evaporator, provided on both sides between the suction duct and the evaporator, a plurality of cold air outlets are formed in the vertical direction A discharge duct whose upper end communicates with the evaporator, a cold air inlet hole which is opened rearward to guide the cold air generated in the evaporator by the discharge duct, and cold air blown by the blower fan to both sides of the cold air inlet hole; A scroll duct made of a guide part which is reduced in both directions so as to concentrate in both directions and communicates with an upper end of the discharge duct, and rotates inside the scroll duct to suck cold air into the cold air inlet of the scroll duct and blow the cold air into the guide part. It is characterized in that the blowing fan is installed to enable Refrigerator. The method of claim 1, The guide part extends toward the discharge duct side along the rotational direction of the blower fan so as to be symmetrical with each other on the upper and lower sides of the blower fan so as to concentrate the blowing on the discharge duct side without reducing the blowing force of the blower fan. The other side of the refrigerator characterized in that it is reduced to the one side in the rotation direction of the blowing fan. The method of claim 1, The blower fan is provided in front of the cold air inlet, and the inside of the refrigerator characterized in that the cross flow type turbo fan provided with a plurality of wings orthogonal to the cold air inlet. The method of claim 1, The blowing fan is a refrigerator characterized in that the axial flow propeller fan provided in front of the cold air inlet.