KR0122406Y1 - Device for circulating cold air - Google Patents

Abstract

The present invention relates to a cold air blower of a refrigerator, and an object thereof is to reduce flow path resistance and noise.

The cold air blower of the refrigerator according to the present invention is in communication with the freezer compartment and the freezer compartment, the intermediate wall 23 partitioning the freezer compartment and the freezer compartment, the freezer compartment duct 30 for guiding cold air to the freezer compartment, and the freezer compartment duct 30. Is provided in the refrigerating chamber duct 40, the middle wall to guide the supply to the refrigerating chamber, one end is connected to the connection of the freezing chamber duct 30 and the refrigerating chamber duct 40, and the other end is a return flow path branched to communicate with the freezer compartment and the refrigerating chamber ( 60), the cooling fan 70 installed on the return flow path, the cold air passing through the cooling fan hits the connection portion between the freezing chamber duct 30 and the refrigerating chamber duct 40 to be distributed to the freezing chamber duct 30 and the refrigerating chamber duct 40. It is the structure containing the installed evaporator 50.

Description

Cold blower of refrigerator

1 is a schematic configuration diagram of a conventional refrigerator.

2 is a schematic configuration diagram of an embodiment according to the present invention.

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

* Explanation of symbols for main parts of the drawings

23: middle wall 30: freezing chamber duct

40: Refrigerating chamber duct 50: Evaporator

60: return flow 70: cooling fan

74: motor

The present invention relates to a refrigerator, and more particularly, to a cold air circulation device of a refrigerator in which a cold fan is installed in a cold air flow path formed in an intermediate wall partitioning a freezer compartment and a refrigerator compartment.

In the conventional refrigerator, as shown in FIG. 1, the freezer compartment 2 and the refrigerating compartment 2 'are partitioned up and down by the intermediate wall 3 in the main body 1 made of an insulator, and each chamber is opened and closed. The freezer compartment door 4 and the refrigerating compartment door 5 are hinged to the main body 1. At the rear of the freezing chamber 2, an evaporator 6 for cooling each chamber and a cooling fan 7 for forcibly supplying cold air to each chamber are provided at the rear of the freezing chamber 2. To this end, the front plate 9 and the rear plate 10 forming the distribution passage 8 are provided on the rear side of the freezing chamber 2 and spaced apart from each other, and the front plate 9 has a plurality of portions for discharging cold air into the freezing chamber. The cold air outlet 11 is formed. The evaporator 6 is installed between the rear plate 10 and the rear wall surface of the main body 1, and the cooling fan 7 is installed so that its wings are positioned on the rear plate 10 above the evaporator 6. As the cooling fan, a propeller fan was used. In addition, the rear surface of the refrigerating chamber is provided with a refrigerating chamber duct (11) to communicate with the above-described distribution passage. On the other hand, the freezing chamber return passage 12 and the refrigerating chamber return passage 13 are formed in the middle wall to guide the introduction of the cold air into the evaporator. In addition, the distribution flow path 8 is also formed in the intermediate wall so as to communicate with the refrigerating chamber duct 11 through the intermediate wall 3, as shown by the imaginary line, the freezer compartment return passage 12 and the cold compartment return passage 13 It has a zigzag shape so that it does not mix with.

In the refrigerator configured as described above, as the cooling fan 7 operates, the air in each chamber flows into the evaporator 6 through the return flow path, respectively, and passes through the evaporator 6, through heat exchange with the refrigerant flowing inside the evaporator 6. It becomes cold. The cold air that has passed through the evaporator 6 hits the cold air outlet 11 in front of the cooling fan 7, and is partially supplied to the freezing chamber, and part of the cold air is lowered along the distribution passage 8 to be supplied to the refrigerating chamber through the refrigerating chamber duct 11. do.

However, in the conventional refrigerator, since the cold air passing through the evaporator collides with the front plate by the propeller fan to be distributed and supplied to the freezer compartment and the refrigerating compartment, there is a problem in that noise is generated. In addition, since the cold air supplied to the refrigerating compartment flows into the refrigerating chamber duct through a distribution passage, in particular, a complicated distribution distribution channel formed on the intermediate wall, severe flow path resistance is received while going down to the refrigerating compartment.

Therefore, the present invention is to solve this problem, an object of the present invention is to provide a cold air blower of the refrigerator to reduce the flow resistance and noise of the cold air in the distribution supply process of the cold air.

The cold air blower of the refrigerator according to the present invention for achieving the above object, the refrigerator compartment and the freezer compartment, the intermediate wall partitioning the refrigerating compartment and the freezer compartment, a freezing chamber duct for guiding the cold air to the freezing compartment, the freezing chamber duct is in communication with the cold air Is provided in the refrigerating chamber duct to guide the supply to the refrigerating chamber, the intermediate wall, one end is in communication with the connection between the freezing chamber duct and the refrigerating chamber duct and the other end is a return flow path branched to communicate with the freezer compartment and the refrigerating chamber, on the return flow path The cooling fan is installed, and the evaporator is installed in the connection portion between the freezing chamber duct and the refrigerating chamber duct so that the cold air passing through the cooling fan hits and is distributed to the freezing chamber duct and the refrigerating chamber duct.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

As shown in FIG. 2, in the embodiment of the present invention, the freezing compartment 21 and the refrigerating compartment 22 are formed in the main body 20 made of a heat insulator, partitioned up and down by an intermediate wall 23, respectively. The freezer compartment door 24 and the refrigerating compartment door 25 are hinged to the main body 20. In the rear of the freezing chamber 21 and the rear of the refrigerating chamber 22, a freezing chamber duct 30 and a refrigerating chamber duct 40, in which cold air discharge ports 31 and 41 are arranged up and down, are provided. At this time, the cold air discharge port 31 formed in the freezing chamber duct 30 is formed to be inclined upward to facilitate the discharge of cold air upward along the freezing chamber duct 30, and the cold air discharge port 41 formed in the refrigerating chamber duct 40 is downward. It is preferable that the cold air downwardly formed along the refrigerating chamber duct 40 is smoothly discharged.

The lower end of the freezing chamber duct 30 and the upper end of the refrigerating chamber duct 40 communicate with each other at the rear of the intermediate wall 23. An evaporator 50 is installed at the connection portion between the freezing chamber duct 30 and the refrigerating chamber duct 40. The evaporator 50 is installed, the upper end of which extends to the upper end of the freezing chamber duct 30 and the lower end thereof is located at the upper end of the refrigerating chamber duct 40. This is because the evaporator 50 is installed over the freezing chamber duct 30 and the refrigerating chamber duct 40, but the portion of the evaporator 50 located in the freezing chamber duct 30 is larger than the refrigerating chamber duct 40, so that the amount of heat exchanged in the air to the refrigerating chamber 22 is increased. This is to maintain the freezing chamber 21 at a lower temperature than the refrigerating chamber 22 by increasing the heat exchange amount of air going to the freezing chamber 21.

The intermediate wall 23 is provided with a return flow path 60 for guiding the introduction of the cold air supplied to the freezer compartment 21 and the refrigerating compartment 22 into the evaporator 50. One end, that is, the rear end, of the return flow path 60 communicates with the connection portion between the freezing chamber duct 30 and the refrigerating chamber duct 40, and the other end, that is, the front end portion, branches up and down so as to communicate with the freezing chamber 21 and the refrigerating chamber 22. In the middle of the return flow path 60, a cooling fan 70 is provided for providing forced air force to the air in the air. As the cooling fan, a vortex fan is used, and the vortex fan is arranged such that a plurality of erected vanes 71 are formed in a circular shape as a whole, and the upper and lower ends of the vanes 71 are annular support frames, respectively. And coupled to and supported by 72. The lower support frame is provided with a radial arm (not shown), and the rotation shaft 73 is coupled to the center of these arms, and the motor 74 is coupled to the rotation shaft 73. The motor 74 may be embedded in the intermediate wall, but is preferably placed on the ceiling of the refrigerating compartment to simplify installation. Therefore, the air flowing into the cooling fan flows in the radial direction of the fan along the return flow path 60 and flows out in the radial direction of the opposite side. Air passing through the fan is impinged on the evaporator 50 is distributed and flows along the freezing chamber duct 30 and the refrigerating chamber duct (40).

Referring to the operation of the present invention configured as described above are as follows.

As the refrigerator operates, the evaporator 50, which is a component of the refrigeration cycle, evaporates while the refrigerant flows, and as the cooling fan rotates, air in the refrigerator is guided to the return flow path 60 to pass through the evaporator 50. That is, since the vortex fan, which is the cooling fan 70, is installed on the return flow path 60, the air in the refrigerator flows in the radial direction of the vortex fan and flows out in the radial direction of the other as the vortex fan operates. The compressed air is strongly impinged on the evaporator 50 installed immediately after the cooling fan and distributed up and down to flow through the freezing chamber duct 30 and the refrigerating chamber duct 40. Since the middle portion and the upper portion of the evaporator 50 are disposed in the freezing chamber duct 30, the cold air upward along the freezing chamber duct 30 is sufficiently cooled to store the food freeze while passing through the evaporator 50. It is supplied to the freezer compartment 21 along 31. On the other hand, since the lower end of the evaporator 50 is disposed in the refrigerating chamber duct 40, the cold air descending along the refrigerating chamber duct 40 is cooled to a temperature suitable for storing food, and the refrigerating chamber is sequentially along the cold air discharge port 41. Supplied to (25). In this way, the cold air supplied to each chamber is circulated by being guided back to the return flow path 60 according to the operation of the cooling fan 70.

As described above in detail, according to the cold air blower of the refrigerator according to the present invention, a cold air circulation fan is installed on the return flow path of the middle wall without installing a propeller fan on the rear wall of the refrigerator, and at the rear of each chamber. By simply arranging the refrigerating chamber duct and the freezing chamber duct without the need for a separate distribution duct or a distribution flow path, the cold air flow path structure is simplified and cold air receives less flow resistance, which is more advantageous. In addition, since cold air is distributed to the evaporator at the rear of the intermediate wall, there is an effect that can reduce the generation of noise.

Claims (2)

A refrigerating compartment and a freezing compartment, an intermediate wall 23 partitioning the refrigerating compartment and a freezing compartment, a freezing compartment duct 30 for guiding cold air to the freezing compartment, a refrigerating duct 40 in communication with the freezing compartment duct and guiding to be supplied to the refrigerating compartment. And a return path 60 provided on the intermediate wall, one end of which is connected to a connection portion between the freezing chamber duct and the refrigerating chamber duct 40 and the other end of which is connected to the freezing chamber and the refrigerating chamber, and a cooling fan installed on the return flow path ( 70) and a refrigerator comprising an evaporator (50) installed at a connection portion between the freezing chamber duct and the refrigerating chamber duct (40) so as to collide with the cold air passing through the cooling fan to be distributed to the freezing chamber duct and the refrigerating chamber duct (40). The refrigerator of claim 1, wherein the cooling fan is a four-flow fan.