JP5895145B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator, and more particularly to a structure that efficiently circulates cooling air from a cooling fan into a refrigerator in a refrigerator that circulates cold air generated by a cooler into the refrigerator by a cooling fan.

  FIG. 4 is a cross-sectional view around a cooling fan of a conventional refrigerator. FIG. 5 is a front view around a cooling fan of a conventional refrigerator. 4 and 5, the refrigerator 1 is constituted by a heat insulating wall, and includes a freezer room 3 that opens forward and is closed by a freezer door 2, and a refrigerating room 5 that is closed by a freezer door 4, and the back of the freezer room 3. In addition, a compressor (not shown), a condenser (not shown), a pressure reducing device (not shown) are connected in series, and a cooler 6 constituting a refrigerant circuit is accommodated. An upper part of the cooler 6 is provided with an axial flow type or diagonal flow type cooling fan 7 for circulating the cool air generated by the cooler 6. 7 is provided with a duct 9 provided with a rectifying unit 8 protruding in a substantially conical shape on the cooling fan 7 side, and the freezer compartment 3 is partitioned from a cooler 6 and a cooling chamber 10 having the cooling fan 7.

  A slit 11 that communicates the freezer compartment 3 and the cooling chamber 10 is provided in the flat portion of the duct 9, and the cooling air from the cooling fan 7 is guided into the freezer compartment 3.

  Further, a cold room air passage 12 is provided on the heat insulating wall on the back of the freezer room 3 so that the freezer room 3 and the cold room 5 communicate with each other, and the cooling air from the cooling fan 7 is guided into the cold room 5.

  During the operation of the refrigerator, the cooling fan 7 is operated to guide the cold air generated by the cooler 4 to the freezer compartment 3 and the refrigerator compartment 5. In general, axial and mixed flow fans have a lower pressure inside the fan than the blades in the vicinity of the fan, causing a flow in the direction opposite to the main flow at the center near the fan discharge side. Vortex is generated. As a result, there are problems such as increased pressure loss, increased fan noise, and reduced airflow.

  In the conventional refrigerator, in order to solve this problem, a protruding substantially conical rectifying portion 8 is provided at a portion of the duct 9 facing the cooling fan 7.

Japanese Patent No. 3631316

  However, in the conventional configuration, the cooling air from the cooling fan 7 is blown radially from the cooling fan 7, and the cooling air that has passed through the slit 11 also flows radially. At this time, the cooling air blown from the slit 11 above the cooling fan 7 directly hits the heat insulating wall that partitions the freezer compartment 3 and the refrigerator compartment 5, and the temperature of the heat insulating wall decreases. As a result, the refrigerator compartment 5 is cooled by the cold air that cools the freezer compartment 3 due to heat conduction, and the freezer compartment 3 may not be efficiently cooled.

  The refrigerating chamber air passage 12 is opened at a position opposite to the blowing direction of the cooling fan 7, and the flow direction changes by 180 degrees, so that the pressure loss of the air passage increases and flows into the refrigerating chamber 5. There was a risk that the cooling air flow would decrease.

  The present invention solves the above-described conventional problems, and by efficiently arranging the cooling fan 7, the slit 11, and the refrigerator compartment air passage 12, the air volume of the cooling fan 7 is increased and the refrigerator compartment 5 is refrigerated. An object is to provide a refrigerator that reduces heat transfer to the chamber 3 and has high cooling efficiency.

In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerating room, a freezing room provided below the refrigerating room, an ice making room provided between the refrigerating room and the freezing room, and the freezing room. A cooler provided in a room, a duct that partitions the cooler and the freezer compartment, a cooling fan that circulates cool air of the cooler, a rectifier provided at a position of the duct facing the cooling fan, and cooling A freezer compartment discharge port for discharging air to the freezer compartment, a refrigerator compartment discharge port for guiding cooling air to the refrigerator compartment, and an ice making chamber discharge port for discharging cooling air to the ice making chamber are provided. In the refrigerator, the freezer compartment side outlet is provided below the center of the cooling fan, the refrigerator compartment side outlet and the ice making room side outlet are provided above the center of the cooling fan , The ice making chamber side discharge port on the front side and the refrigerator compartment side discharge port on the back side Only, the refrigerating chamber side discharge port and the made ice chamber side discharge port, from the front
The duct is inclined to the left and right as viewed, and the duct is inclined to the rear side near the refrigerator outlet and the front side of the ice making chamber outlet is inclined.

  As a result, the cooling air from the cooling fan is blown out radially by the rectifying unit, the cooling air blown above the cooling fan flows to the refrigerator compartment, and the cooling air blown below the cooling fan flows to the freezer compartment. Each chamber can be efficiently cooled without directly cooling the heat insulating wall between the refrigerator and the refrigerator compartment.

  Since the refrigerator of the present invention can efficiently cool the cool air from the cooling fan into each room, the cooling capacity can be increased and energy saving can be achieved.

Sectional drawing of the refrigerator in Embodiment 1 of this invention Sectional drawing of the refrigerator compartment side vicinity vicinity of the refrigerator in the same embodiment Sectional drawing of the ice making chamber side discharge outlet vicinity of the refrigerator in the same embodiment Sectional view enlarging the periphery of the rectification part of a conventional refrigerator Front view of the freezer compartment of a conventional refrigerator

The invention described in claim 1 includes a refrigerator compartment, a freezer compartment provided below the refrigerator compartment, an ice making compartment provided between the refrigerator compartment and the freezer compartment, and a cooler provided in the refrigerator compartment. A duct that partitions the cooler and the freezer compartment, a cooling fan that circulates the cool air of the cooler, a rectifying unit that is provided at a position facing the cooling fan of the duct, and discharges cooling air to the freezer compartment A freezer compartment side discharge port, a refrigerator compartment side discharge port for guiding cooling air to the refrigerating chamber, and an ice making chamber side discharge port for discharging cooling air to the ice making chamber , wherein the freezer side the discharge port is provided below the center of the cooling fan, in which the said refrigerating chamber side discharge port and the made ice chamber side discharge port provided above the center of the cooling fan, the manufactured icehouse side discharge port On the front side, a refrigerator compartment side discharge port is provided on the back side, and the ice making chamber side discharge port and The built chamber-side discharge port, along with being staggered to the left and right as viewed from the front, near the duct the refrigerating chamber side discharge port to the rear side, near the manufactured ice chamber side discharge port is inclined to the front side By not applying the cooling air from the cooling fan to the heat insulating wall between the refrigerator compartment and the freezer compartment, the cooling air can be efficiently blown out to each room, and a refrigerator with high cooling efficiency can be provided. .

According to a second aspect of the present invention, in the first aspect of the present invention, a wind direction adjusting portion is provided at the upper part of the ice making chamber side outlet so that the discharged cooling air flows horizontally or downward. In a refrigerator equipped with an ice making chamber, the cooling air from the cooling fan is not applied to the heat insulating wall between the refrigerator compartment and the ice making chamber, so that the cooling air can be efficiently blown out to each room, and the cooling efficiency can be improved. A high refrigerator can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a sectional view of a refrigerator in an embodiment of the present invention. FIG. 2 is a cross-sectional view of the vicinity of the refrigerator outlet of the refrigerator according to the embodiment. FIG. 3 is a cross-sectional view of the vicinity of the ice making chamber side outlet of the refrigerator in the same embodiment. In addition, about the same structure as the past, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  1 to 3, the refrigerator 1 is closed by a drawer-type freezer compartment door 2, has a freezer case 13 inside, is cooled to about minus 20 degrees, and rotates above the freezer compartment 3. The refrigerator compartment 5 is closed by a refrigerator door 4 and is cooled to around 5 degrees. The drawer ice compartment door 14 is closed between the refrigerator compartment 3 and the refrigerator compartment 5, and an ice making case 15 is provided inside. An ice making chamber 16 is provided. Here, the ice making chamber 16 stores ice having a melting point of 0 degrees as compared with a freezing room that stores stored items having a melting point of minus 10 degrees or less, such as ice cream. Relatively high temperature.

  The freezer compartment 3 is separated from the freezer compartment 3 by a duct 17, and constitutes a cooling compartment 10 that houses the cooler 6 and the cooling fan 7.

  The duct 17 includes a rectifying unit 8 that protrudes in a substantially frustoconical shape at a position facing the cooling fan 7, and a freezer compartment side that communicates the inside of the freezer compartment 3 with the cooling chamber 10 below the center of the cooling fan 7. An ice making chamber side discharge port 19 that communicates the inside of the cooling chamber 10 and the ice making chamber 16 is provided above the discharge port 18 and the center of the cooling fan 7.

  A barrier 20 is provided between the ice making chamber 16 and the refrigerator compartment 5, and a barrier 20 is provided in the cooling chamber 10 of the barrier 20, and a refrigerator outlet 21 that communicates the refrigerator 10 with the refrigerator 5 is provided. A damper 22 for selectively closing and opening the refrigerator compartment side outlet 21 is provided in the refrigerator compartment outlet 21.

  Here, the ice making chamber side discharge port 19 and the refrigerator compartment side discharge port 21 are opened at positions shifted left and right as viewed from the front of the refrigerator.

  Furthermore, the ice making room side discharge port 19 is provided on the front side of the refrigerator 1 with respect to the basic plane of the duct 17, and the refrigerator side discharge port 21 is provided on the back side, and the duct from the rectifying unit 8 to each discharge port. By inclining 17, connection is made smoothly.

  Further, on the ice making chamber 16 side of the ice making chamber side discharge port 19, an air direction adjusting rib 23 is provided on the upper side of the opening at an angle such that the cold air flows horizontally or downward.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

During the operation of the refrigerator, the cooling fan 7 is operated to guide the cold air generated by the cooler 6 to each room. At this time, the rectifying unit 8 is provided at a position facing the cooling fan 7 in order to suppress vortices generated in the vicinity of the discharge side of the cooling fan 7. Accordingly, vortices generated on the discharge side of the cooling fan 7 can be suppressed, the pressure loss can be reduced, the air volume of the cooling fan 7 can be increased, and the cool air from the cooling fan 7 is discharged radially and uniformly.

  Thereby, the cold air below the cooling fan 7 flows downward, and the cold air above the cooling fan 7 flows upward.

  In the refrigerator of the present invention, all the cold air below the cooling fan 7 flows from the freezer compartment outlet 18 to the freezer compartment 3, and the upper cold air is made from the icemaker outlet 19 and the refrigerator outlet 21. It flows to the chamber 16 and the refrigerator compartment 5.

  Therefore, the cold air blown into the freezer compartment 3 flows downward, and flows into the freezing case 15 to cool the stored items in the freezing case 15 and not directly cool the barrier 20.

  Moreover, since the cold air blown out to the refrigerating room 5 flows upward, it smoothly flows into the refrigerating room 5 so that the air path loss can be reduced.

  Here, since the cold air blown out into the ice making chamber 16 flows upward, the barrier 20 may be cooled and heat loss may occur. However, the ice making chamber 16 only needs to be cooled to a temperature higher than that of the freezer compartment 3, and the air volume of the cold air is reduced by making the area of the ice making chamber side discharge port 19 smaller than the area of the freezer room side discharge port 18. doing. Therefore, even if the temperature in the warehouse is high and the cooling air directly hits the barrier 20, the heat loss can be reduced as compared with the case where the cooling air hits the freezer compartment 3. Further, the wind direction adjusting rib 23 directs the flow of cool air downward from the horizontal to guide the cool air into the ice making case 15 and does not directly cool the barrier 20 with the cool air.

  Therefore, the heat loss of the refrigerator compartment 5 and the ice making room 16 can be reduced, and a highly efficient refrigerator can be obtained.

  Next, the distribution of cold air at the ice making chamber side outlet 19 and the refrigerator compartment side outlet 21 will be described. During the refrigerator operation, the cooler 6 is changed from minus 25 degrees to minus 30 degrees, and the cool air by the cooling fan 7 is around minus 20 degrees. In order to cool the refrigeration room 5 to about 5 degrees by this cold air, a damper 22 that closes and opens the refrigeration room side discharge port 21 at the refrigeration room side discharge port 21 in order to selectively flow cold air to the refrigeration chamber 5. When the damper 22 is closed, the cool air discharged upward by the cooling fan 7 flows only to the ice making chamber side discharge port 19, and when the damper 22 is open, it is above the cooling fan 7. The cold air discharged to the ice is divided into an ice making chamber side discharge port 19 and a refrigerator compartment side discharge port 21.

  In the refrigerator of the present invention, the ice making chamber side discharge port 19 and the refrigerator compartment side discharge port 21 are arranged to be shifted left and right when viewed from the front of the refrigerator 1, and are also shifted to the front and rear when viewed from the side. By connecting the duct 17 to the heel, the connection is made smoothly.

  Thereby, the air path loss from the cooling fan 7 to the ice making chamber side outlet 19 and the refrigerator compartment side outlet 21 can be reduced.

  Therefore, the pressure loss of the cooling fan 7 can be reduced, and a highly efficient refrigerator can be obtained.

  In the present embodiment, the ice making chamber 16 is described as being between the freezer compartment 3 and the refrigerator compartment 5. However, for example, by using a chiller chamber having a high temperature of around 0 degrees, a greater effect can be obtained. It is done.

  Further, in the present embodiment, it has been described that there is only the ice making room 16 between the freezing room 3 and the refrigerating room 5, but the ice making room 16, a side chiller, and the like are provided, and the refrigerating room side discharge port 21. By providing outlets for cooling each room on the left and right sides, it is possible to support a multi-door refrigerator.

  In the present embodiment, the damper 22 is described as being provided only in the refrigerator-side discharge port 21, but more accurate temperature control can be performed by providing the ice-making chamber-side discharge port 19 with a damper. In addition, by controlling the number of rotations of the cooling fan 7 and the compressor according to the opening and closing of the damper, useless cooling can be eliminated and a more efficient refrigerator can be obtained.

  The present invention is a refrigerator that circulates cold air generated by a cooler into a storage room by a cooling fan through a duct, and can provide a refrigerator that can cool the storage room efficiently. Useful as refrigerators of various types and sizes.

DESCRIPTION OF SYMBOLS 1 Refrigerator 3 Freezing room 6 Cooler 7 Cooling fan 8 Rectification part 10 Cooling room 16 Ice making room 17 Duct 18 Freezing room side discharge port 19 Ice making side discharge port 21 Refrigerating room side discharge port 22 Damper 23 Wind direction adjustment rib

Claims (2)

A refrigerator compartment, a freezer compartment provided below the refrigerator compartment, an ice making room provided between the refrigerator compartment and the freezer compartment, a cooler provided in the freezer compartment, the cooler and the freezer compartment A duct for partitioning, a cooling fan for circulating the cool air of the cooler, a rectifying unit provided at a position facing the cooling fan of the duct, a freezer compartment discharge outlet for discharging cooling air to the freezer compartment, and cooling In a refrigerator provided with a refrigerator-side discharge port that guides air to the refrigerator compartment and an ice-making chamber-side discharge port that discharges cooling air to the ice-making chamber, the freezer-room discharge port is connected to the center of the cooling fan. Are provided below, and the refrigerator-side discharge port and the ice-making chamber-side discharge port are provided above the center of the cooling fan, the ice-making chamber-side discharge port on the front side, and the refrigerator-side discharge port On the back side, the ice making chamber side outlet and the refrigerator compartment side outlet Together they are arranged offset to the left and right as viewed, around the duct the refrigerating chamber side discharge port to the rear side, near the manufactured ice chamber side discharge port is inclined to the front side refrigerator. The refrigerator according to claim 1 , wherein an air direction adjusting unit is provided at an upper part of the ice making chamber side discharge port so that the discharged cooling air flows horizontally or downward.