KR20210089537A - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator, which comprises: a body having a plurality of cold storage compartments and a freezer, and connected with a door for opening and closing the cold storage compartments and the freezer; and an ice-making chamber divided as a separate space within the cold storage compartments and the freezer, and having an ice maker, an ice storage bucket and a driving unit fan duct assembly for circulating cold air. The driving unit fan duct assembly includes: a driving unit assembly for providing a driving force for the ice storage bucket; and a fan assembly connected to the driving unit assembly. The driving unit assembly includes: a motor connected to the ice storage bucket; a motor wire connected to the motor; and a grill-type blocking wall disposed between the motor wire and the fan assembly. The fan assembly includes: a rotary motor for rotating a fan; a fan wire connected to the rotary motor; and a fan housing in which the fan and the rotary motor are accommodated and a wire guide hole through which the fan wire passes is formed. Also, fixing parts to which a fastening member is fastened are respectively formed in the front and rear sides of the driving unit fan duct assembly, and a recessed part caught by the fixing parts is formed between the front and the rear sides. Therefore, a centrifugal fan can be easily applied to the ice-making chamber.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly, to a refrigerator in which a centrifugal fan is applied to an ice-making chamber.

BACKGROUND ART In general, a refrigerator is a home appliance for storing food in a refrigerated or frozen state in a storage compartment opened and closed by a door, and typically includes a refrigerator compartment for storing food in a low-temperature refrigerated state and a freezer compartment for freezing food and storing it in a frozen state. be prepared

As a conventional refrigerator, for example, one known in the patent literature (Korean Patent No. 10-0674573) is proposed.

As disclosed in the patent literature, recent refrigerators tend to provide a refrigerating compartment, which is used relatively more frequently than the freezing compartment, on the upper part of the main body, and provide a relatively less used freezing chamber than the refrigerating chamber on the lower part of the main body. A French door type refrigerator in which the refrigerating compartment is opened and closed by two rotatable doors arranged side by side and hinged to the left and right, and the freezer compartment is opened and closed by a slidably installed drawer-type door is in the spotlight.

In addition, the refrigerator may additionally include an ice maker for generating and storing ice for user convenience, and the ice maker includes a cooling fan for supplying cold air from the rear of the ice maker to the ice maker, a bucket for storing ice, and the like. do.

In such a conventional refrigerator, there are many components included in the ice-making chamber, and assembling between the components tends to be difficult.

Korean Patent Publication No. 10-0674573

SUMMARY OF THE INVENTION The present invention is to solve the above problems, and an object of the present invention is to provide a refrigerator in which a centrifugal fan is easily applied to an ice-making chamber.

Another object of the present invention is to provide a refrigerator with improved assembly of a driving unit fan duct assembly.

Another object of the present invention is to provide a refrigerator in which electric wires of a motor do not get tangled in a fan.

Another object of the present invention is to provide a refrigerator with an improved fan air volume.

Another object of the present invention is to provide a refrigerator capable of compactly implementing a centrifugal fan.

According to an aspect of the present invention, there is provided a refrigerator comprising: a refrigerator body partitioned into a refrigerating compartment, a freezing compartment and an ice-making compartment; The ice-making chamber includes an ice maker, an ice storage bucket, and a driving unit fan duct assembly, the driving unit fan duct assembly comprising a driving unit assembly providing driving force to the ice storage bucket, and a fan assembly connected to the driving unit assembly; The driving unit assembly and the fan assembly are fitted.

In addition, the refrigerator of the present invention, the fan assembly comprises a fan; a rotation motor for rotating the fan; a fan housing in which the fan and the rotating motor are accommodated; and a suction duct unit for coupling with the driving unit assembly.

Further, in the refrigerator of the present invention, fixing parts corresponding to each other are formed in the fan housing and the driving unit assembly, and a depression in which the fixing part is seated is formed in the suction duct.

In addition, in the refrigerator of the present invention, a wire guide hole for guiding the wire of the rotary motor is formed in the fan housing.

In addition, in the refrigerator of the present invention, a grill-type blocking wall is interposed between the driving unit assembly and the fan assembly.

In addition, the refrigerator of the present invention includes a refrigerator body divided into a refrigerating compartment, a freezing compartment and an ice making compartment; The ice-making chamber includes an ice maker, an ice storage bucket, and a driving unit fan duct assembly, the driving unit fan duct assembly comprising a driving unit assembly providing driving force to the ice storage bucket, and a fan assembly connected to the driving unit assembly; The fan assembly includes a blocking ring.

In addition, the refrigerator of the present invention, the fan assembly comprises a fan; a rotation motor for rotating the fan; a fan housing in which the fan and the rotating motor are accommodated; and a suction duct part for coupling with the driving part assembly, wherein the blocking ring is formed on an inner edge of the cold air suction passage of the suction duct part.

In addition, in the refrigerator of the present invention, the fan housing includes a cut-off portion formed on a side of the fan, the cut-off portion, a scroll-shaped space in which the fan is accommodated, and a cold air intake passage communicating with one side of the space. A duct and a cold air exhaust duct provided with a cold air exhaust passage communicating with the other side of the space, wherein the cold air intake duct surrounds the periphery of the fan in front of the fan, and the cold air intake duct and the fan are spaced apart from each other. An enclosing blocking ring is formed, and the scroll shape increases at a predetermined increase ratio from the cut-off portion toward the rotation direction of the fan.

Further, in the refrigerator of the present invention, the increase ratio is 0.06.

In addition, in the refrigerator of the present invention, the lower side of the fan housing is arranged in parallel with the inclined surface of the front side of the evaporator case.

In addition, in the refrigerator of the present invention, the refrigerating compartment and the ice making compartment are formed as independent spaces at the same time by foaming.

In addition, in the refrigerator of the present invention, the freezing compartment is formed as an independent space simultaneously with the refrigerating compartment and the ice making compartment by foaming.

The refrigerator of the present invention has the following effects.

In the present invention, it is easy to provide a centrifugal fan in the ice-making chamber.

In addition, according to the present invention, the driving unit assembly, the fan assembly, and the cold air discharge duct are assembled by fitting each other to provide a driving unit fan duct assembly as one assembly, whereby the driving unit assembly, the fan assembly and the cold air discharge duct are each individually installed in the ice making chamber. It can be easily installed in the ice-making room through a single installation process in the state of the drive unit fan duct assembly modularized into one assembly without the need for installation.

In addition, in the present invention, since the wire guide hole, the guide wall, and the first wire support part are formed on the rear surface of the fan assembly, the wire connected to the rotation motor is connected to the outside without being entangled in the fan, so that it can be stably and easily connected to the harness assembly.

In addition, the present invention relates to the driving unit fan duct assembly, which forms a common front and rear fixing part in the driving part assembly and the fan assembly, and both sides of the blocking wall, the suction duct part, and the third sealing material, which are structures between the front fixing part and the rear fixing part, are fixed. There is an effect of being compactly combined when all of the components are combined by forming a depression that is caught by the government.

In addition, according to the present invention, the harness assembly is safe and easy to assemble because it is not tangled with the fan by the blocking wall disposed on the rear side.

In addition, in the present invention, since the blocking ring covers the separation between the cold air intake duct and the fan, it is possible to block the internal pressure of the centrifugal fan from leaking.

In addition, the present invention can implement the size of the centrifugal fan compactly while maintaining the air flow of the centrifugal fan by selecting the increase ratio 'b' of the crawl shape as a specific dimension.

In addition, in the present invention, when the driving unit fan duct assembly is assembled with the evaporator case, the lower side of the fan housing is arranged in parallel with the inclined surface of the front side of the evaporator case. Therefore, it is easy to assemble the driving unit fan duct assembly with the evaporator case.

1 is a perspective view of a state in which a rotating door of a refrigerator according to an embodiment of the present invention is opened;
FIG. 2 is a view of a cross section marked with '5' in FIG. 1 to show the configuration related to the ice making chamber
3 is a cross-sectional view of the driving unit fan duct assembly applied to the present invention;
Figure 4 is a partial enlarged view of Figure 3 to show the blocking ring in detail
5 is a perspective view of a driving unit fan duct assembly applied to the present invention;
6 is an exploded view of the driving unit fan duct assembly applied to the present invention;
7 is an exploded view of the driving unit fan duct assembly of the present invention as viewed from a different direction from FIG.
8 is a perspective view of a driving unit assembly applied to the present invention;
9 is an exploded perspective view of the driving unit fan duct assembly applied to the present invention;
10 is a rear perspective view of the suction duct part applied to the present invention;
11 is a view necessary for explanation related to the centrifugal fan;
12 is a perspective view showing the relationship between the inner case and the outer case and the evaporator assembly;
13 is a perspective view of the evaporator assembly;
14 is a graph related to flow analysis of a centrifugal fan applied to the present invention;
15 is a view for explaining divisions of a refrigerating compartment, an ice making compartment, and a freezing compartment of the refrigerator body

Among the components of the present invention to be described below, for the same components as those of the prior art, reference will be made to the above-described prior art, and a separate detailed description thereof will be omitted.

The terminology used herein is for the purpose of referring to specific embodiments only, and is not intended to limit the present invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising," as used herein, specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of

When an element is referred to as being “connected” or “contacted” to another element, it may be directly connected or in contact with the other element, but it is understood that other elements may exist in between. it should be

1 is a perspective view of a refrigerator in an open state with a pivotable door according to an embodiment of the present invention, FIG. 2 is a cross-sectional view indicated by '5' in FIG. 1 to show a configuration related to an ice-making chamber, and FIG. 3 is this view It is a cross-sectional view of the driving unit fan duct assembly applied to the present invention, FIG. 4 is a partial enlarged view of FIG. 3 to show the blocking ring 9273 in detail, FIG. 5 is a perspective view of the driving unit fan duct assembly applied to the present invention, and FIG. 6 is An exploded view of the driving unit fan duct assembly applied to the present invention, FIG. 7 is an exploded view of the driving unit fan duct assembly of the present invention viewed from a different direction from FIG. 5, and FIG. 8 is a perspective view of the driving unit assembly applied to the present invention, FIG. An exploded perspective view of the driving unit fan duct assembly applied to the present invention, FIG. 10 is a rear perspective view of the suction duct unit applied to the present invention, FIG. 11 is a cross-sectional view necessary for explanation related to the centrifugal fan, and FIG. 12 is an inner case and an outer case between the evaporator assembly It is a perspective view showing the relationship, and FIG. 13 is a perspective view of the evaporator assembly.

Referring to FIG. 1 , a main body 10 is a configuration constituting the exterior of a refrigerator according to a preferred embodiment of the present invention, and is formed in a rectangular box shape, and includes an outer case 100 , an inner case 200 , and an inner case ( It includes a refrigerating compartment 11 provided on the upper portion of the 200 , a freezing compartment 12 provided under the inner case 200 to be disposed below the refrigerating compartment 11 , and an ice-making compartment 60 formed as an independent space.

The present invention provides a refrigerator body 100 divided into a refrigerating compartment 11, a freezing compartment 12 and an ice making compartment 60, and to which doors 310, 320, and 400 for opening and closing the spaces are connected; The ice maker 60 includes an ice maker 700 , an ice storage bucket 800 , and a driving unit fan duct assembly 900 , and the driving unit fan duct assembly 900 provides driving force to the ice storage bucket 800 . It includes a driving unit assembly 910 that provides a, and a fan assembly 920 connected to the driving unit assembly 910, wherein the driving unit assembly 910 and the fan assembly 920 are fitted.

The present invention further includes an evaporator assembly 1100 assembled with the rear side of the driving unit fan duct assembly 900 into which cold air is introduced.

As shown in FIG. 15 , the refrigerating compartment 11 and the ice-making compartment 60 are formed as independent spaces at the same time by foaming, and the freezing compartment 12 includes the refrigerating compartment 11 and the ice-making compartment 60 and It can be formed into an independent space at the same time by foaming.

The driving unit fan duct assembly 900 includes a driving unit assembly 910 that provides driving force to the ice storage bucket 800 , and a fan assembly 920 connected to the driving unit assembly 910 .

A first coupling flange 9101 to be described later of the driving unit assembly 910 and a second coupling flange 9102 to be described later of the fan assembly 920 are fitted while in surface contact with each other. Accordingly, the airtightness between the driving unit assembly 910 and the fan assembly 920 is improved.

The driving unit assembly 910 includes a motor 912 connected to the ice storage bucket 800 , a motor wire HA connected to the motor 912 , and a grill-type blocking wall 9134 .

A grill-type blocking wall 9134 is interposed between the driving unit assembly 910 and the fan assembly 920 .

Specifically, the grill-type blocking wall 9134 is disposed between the motor wire HA and the fan assembly 920 .

Corresponding fixing portions 9103a, 9103b, and 9203b are formed in the fan housing 921 and the driving unit assembly 910, and the fixing portions 9103a, 9103b and 9203b are located in the suction duct. Portions 9134a, 9134b, 927a, 927b, 928a, 928b are formed.

Specifically, fixing parts 9103a, 9103b, and 9203b to which the fastening members B1 and B2 are fastened to the front and rear sides of the driving unit fan duct assembly 900 are respectively formed, and the fixing parts are formed between the front and the rear. The depressions 9134a, 934b, 927a, 927b, 928a, and 928b are formed at (9103a, 9103b, 9203a, 9203b).

The driving unit fan duct assembly 900 is assembled with the evaporator case 1000 while moving from the front to the rear, and the lower side of the fan assembly 920 is inclined downward from the front to the rear.

The fan assembly 920 includes a fan 922; a rotary motor (IM) for rotating the fan (922); a fan wire (W) connected to the rotary motor (IM); a fan housing 921 accommodated therein and a suction duct part to be described later for coupling with the driving unit assembly; and a blocking ring 9273 .

The fan housing 921 includes a wire guide hole 9216 for accommodating the fan 922 and the rotary motor IM and guiding the fan wire W that is the wire W of the rotary motor IM, the fan A scroll (SL)-shaped space including a cut-off (CUT-OFF) part 929 formed on the side of the 922 and the cut-off part 929 and in which the fan 922 is accommodated, in communication with one side of the space It includes a cold air intake duct 927 provided with a cold air intake passage 9211a, and a cold air exhaust duct provided with a cold air discharge passage 9211b that communicates with the other side of the space.

The blocking ring 9273 is formed on the inner edge of the cold air suction passage 9211a of the suction duct.

The cold air intake duct 927 surrounds the outside of the fan 922 in front of the fan 922, and surrounds a space D formed by separating the cold air intake duct 927 and the fan 922 from each other. A blocking ring 9273 is formed, and the shape of the scroll SL increases at a predetermined increase ratio from the cut-off portion 929 to the rotation direction of the fan 922 .

Detailed descriptions of the above description will be provided later.

An opening 101 is formed in the upper left side of the rear wall of the outer case 100 .

The opening 101 is a hole penetrating the rear wall of the outer case 100 in the front-rear direction, and is formed in a substantially rectangular shape.

The opening 101 is formed adjacent to the upper left corner side of the rear side wall of the outer case 100 to accommodate the evaporator assembly 1100 for supplying cold air to the ice-making chamber 60 to be described later on the rear side wall of the outer case 100 . It serves as a provision for the side.

The opening 101 is preferably formed to communicate with the installation space 1010 of the evaporator case 1000 to be described later, which is disposed in front of the outer case 100 .

The inner case 200 is accommodated in the inner space of the outer case 100 and assembled to be coupled to the outer case 100, and the outer case 100 so that various wires can be accommodated and the insulating material 110 to be described later is injected and foamed. ) is coupled to the outer case 100 while providing a space between the.

The inner case 200 has an open front, and a plurality of storage chambers are provided therein, and the plurality of storage chambers can be selectively shielded by the doors 310 , 320 , and 400 , respectively.

An ice-making chamber 60 is formed in the upper left corner of the inner case 200 .

The ice maker 60 is configured to generate and store ice, and an ice maker 700 for generating ice is installed at an upper portion thereof, and an ice storage bucket for storing and storing the ice generated by the ice maker 700 at a lower portion thereof ( 800) is installed.

A detailed description of the ice-making chamber 60 and each configuration related thereto will be described later.

On the other hand, in the upper corner of one side of the inner case 200, a separate compartment 600 is assembled.

The inner case 200 includes a partition unit 600 and an evaporator case 1000 that is provided before assembly with the outer case 100 .

Unlike the present embodiment, the inner case 200 may be integrally formed with the partition unit 600 through injection.

The partition unit 600 is a wall serving as a right insulating wall and a lower insulating wall for forming the ice making chamber 60 .

The partition unit 600 is a wall coupled to the upper left corner of the inner case 200 to serve as a right insulating wall and a lower insulating wall for forming the ice-making chamber 60 .

That is, the partition unit 600 is configured to partition the ice-making chamber 60 into a separate insulating space from the refrigerating chamber 11 , and surrounds the ice-making chamber 60 together with the upper and left walls of the inner case 200 . serves as an ice-making chamber case.

A heat insulating material accommodating space 601 is provided inside the compartment 600 .

The insulating material 110 is injected into at least a portion of the space between the outer case 100 and the inner case 200 and the insulating material accommodating space 601 of the partition 600 to be integrally foamed.

When the insulating material 110 is injected into the space between the insulating material accommodating space 601 and the outer case 100 and the inner case 200, the refrigerating chamber 11 and the ice making chamber 60 are simultaneously formed into independent spaces by foaming. is formed Also, the freezing compartment 12 may be formed as an independent space simultaneously with the refrigerating compartment 11 and the ice making compartment 60 by foaming.

In addition, in forming the ice-making chamber 60 by the partition unit 600 , an entrance wall 630 and an installation wall (not shown) may be further included in addition to the partition unit 600 .

Meanwhile, the ice storage bucket 800 includes an ice-making chamber door 810 , an ice crushing unit 820 coupled to the rear of the ice-making chamber door 810 , and a bucket unit 830 coupled to the rear of the ice crushing unit 820 . ) and the bucket portion 830 may be configured to include an auger 840 installed.

The ice-making chamber door 810 is configured to selectively open and close the open front of the ice-making chamber 60 by being detachable from the front surface of the partition unit 600 .

The ice crusher 820 rotates together with the rotation of the auger 840 to crush the ice, and is disposed below the crusher 821 to crush the ice so that the crusher 821 can crush the ice. It is configured including a configuration that can support or not support ice.

The auger 840 is configured to transfer the ice stored in the ice storage space 831 of the bucket unit 830 toward the ice outlet 6113 and is rotatably installed in the ice storage space 831 .

One end of the auger 840 is rotatably connected together with the plurality of crushers 821, and the other end of the auger 840 through a rotation bracket 841 to receive rotational force from a second driving unit 912 to be described later. It is connected to the second driving unit 912 .

Meanwhile, the driving unit fan duct assembly 900 is provided on the rear side of the ice storage bucket 800 .

Referring to FIG. 2 , the driving unit fan duct assembly 900 provides driving force to the ice storage bucket 800 to operate the operating shaft (not shown) and the auger 840 of the ice storage bucket 800 . 910, the cold air intake 1002 and the cold air outlet of the evaporator case 1000 to be described later, which is disposed between the ice storage bucket 800 and the evaporator assembly 1100 to be described later and is provided by the evaporator assembly 1100 to be described later. The cold air discharge duct 930 that receives the cold air discharged through the fan assembly 920 circulating through 1001 and the cold air discharge port 1001 of the evaporator case 1000 to be described later and guides it to the ice maker 700 is modularized. will be prepared

In the driving unit fan duct assembly 900 , the fan assembly 920 is coupled to the rear portion of the driving unit assembly 910 , and the cold air discharge duct 930 is coupled to the upper portion of the driving unit assembly 910 to be modularized.

The driving unit assembly 910 may include a first driving unit 911 , a second driving unit 912 , and a driving unit housing 913 .

The driving unit housing 913 is a configuration constituting the exterior of the driving unit assembly 910, and is formed on the front side and integrally formed at the rear end of the first driving unit accommodating part 913a and the first driving unit accommodating part 913a having an open lower surface. and a second driving unit accommodating part 913b that is.

A quadrangular first coupling flange 9101 is formed in the rear portion of the second driving unit accommodating portion 913b of the driving unit housing 913 , and a quadrangular second coupling flange 9102 is formed in the upper portion.

A harness necessary for driving the ice storage bucket 800 and a harness H necessary for driving the fan are disposed in the inner space formed by the second coupling flange 9102 .

A harness including electric wires necessary for driving the ice storage bucket 800 is provided as an assembly HA.

As shown in FIG. 8 , the harness assembly HA is introduced into the inside through the left side of the driving unit assembly 910 .

At this time, the harness assembly HA is safe and easy to assemble because it is not entangled with the fan 922 by the blocking wall 9134 disposed on the rear side.

Specifically, a harness accommodating hole 913c is formed through the left side of the second driving part accommodating part 913b so that the harness assembly HA can be inserted through and introduced into the inner space of the second coupling flange 9102 .

At this time, it is preferable that a hole communicating with the inner space of the second coupling flange 9102 is formed in the second driving part accommodating part 913b so that the harness assembly HA can enter the inner space of the second coupling flange 9102 . .

A fan wire inlet hole 9105 penetrating through the rear of the second coupling flange 9102 so that a fan wire W, which will be described later, is easily accommodated into the internal space is formed.

Two first attachment/detachable holes 9131 are formed on both sides of the rear end of the second driving unit accommodating portion 913b, more specifically, on the left and right portions of the first coupling flange 9101, respectively.

In addition, two first attaching and detaching protrusions 9132 are formed on both upper ends of the second driving unit accommodating portion 913b, more specifically, on the left and right portions of the second coupling flange 9102, respectively.

The number of the first detachable hole 9131 and the first detachable protrusion 9132 may vary as needed.

The first detachable hole 9131 can be fitted with a second detachable protrusion 9213 of the fan assembly 920 to be described later, so that the fan assembly 920 can be detachably coupled to the driving unit housing 913 .

In addition, the first detachable protrusion 9132 can be fitted with a second detachable hole 932 of the cold air discharge duct 930 to be described later so that the cold air discharge duct 930 can be detachably coupled to the driving unit housing 913 . have.

The second driving unit receiving portion 913b of the driving unit housing 913 has a plurality of first cold air flow slits 9133 formed on the lower front side, the rear side is opened, and a plurality of second cold air flow slits 9135 on the open rear side. ), the formed blocking walls 9134 are fitted and coupled to both inner walls.

The first cold air flow slit 9133 is a hole through which cold air from the ice storage bucket 800 side can be introduced into the driving unit housing 913 when the fan assembly 920, which will be described later, is operated, and the second cold air flow slit ( 9135 is a hole through which the cold air introduced into the driving unit housing 913 can be sucked into the fan assembly 920 .

The first driving unit 911 is composed of a solenoid valve capable of moving in the vertical direction, and is accommodated and installed in the first driving unit receiving unit 913a protruding from the front right side of the driving unit housing 913, and supports ice when crushing ice It plays a role in operating the configuration for

The second driving unit 912 is composed of a motor that provides a rotational force and is accommodated and installed inside the second driving unit accommodating part 913b integrally formed at the rear end of the first driving unit accommodating part 913a, and the bucket part 830. It serves to operate the auger 840 for transferring the ice stored in the ice storage space 831 and the crusher 821 for crushing the ice.

Reference numerals 915a and 915b not described in FIG. 9 denote motor cases positioned above and below the motor of the second driving unit 912 , respectively.

A fan assembly 920 is installed on the rear side of the driving unit housing 913 .

The fan assembly 920 is detachably assembled to the rear end of the driving unit housing 913 , is disposed between the ice-making chamber 60 and the evaporator case 1000 , and is preferably a centrifugal fan.

The fan assembly 920 may include a fan housing 921 , a fan 922 , and a rotation motor IM.

The fan housing 921 is coupled to the front side of the fan accommodating part 923 in which the fan 922 is accommodated, the fan accommodating part 923 to provide a cold air intake duct 9211, the fan accommodating part 923. It is coupled to the open lower side of the lower side and the lower surface of the suction duct, a cold air exhaust duct 9212 is provided at the rear of the lower part, and a third sealing material 928 fitted between the suction duct and the fan accommodating part 923 is included.

The fan receiving portion 923 includes a cut-off portion 929 .

The suction duct portion is a rectangular plate, the third coupling flange 9201 is formed.

A drain plate 9279 forming a drain port 9271 to be described later is formed on the lower rear side of the suction duct.

The drain plate 9279 is formed to be inclined downward from the front to the rear.

An extension portion 9277, which will be described later, is connected to the drain plate 9279.

The cold air intake duct 9211 is provided with a cold air intake passage 9211a communicating with the ice-making chamber 60 therein. When the fan assembly 920 is operated, the lower front side of the ice-making chamber 60, that is, an ice storage bucket ( 800) is configured to suck the cold air through the first cold air flow slit 9133 and the second cold air flow slit 9135 .

The cold air intake duct 9211 has a ring shape with an open rear side, and a cross-sectional shape when viewed from the side as shown in FIGS. 3 and 4 is approximately a 'c' shape. That is, the front surface of the cold air intake duct 9211 is close to a semicircular shape.

3, 4, and 10, a blocking ring 9273 extending to the rear is integrally formed around the cold air intake duct 9211.

The blocking ring 9273 is disposed to surround the cold air intake duct 9211 from the outside.

For this reason, since the blocking ring 9273 covers the space D between the cold air intake duct 9211 and the fan 922, it is possible to block the pressure in the centrifugal fan from leaking.

A drain 9271 is formed at the lower side of the blocking ring 9273 .

Specifically, the lower portion of the blocking ring 9273 is open, and at this time, the open both sides extend to the vicinity of the center of the cold air exhaust duct 9212 . That is, it consists of a ring-shaped body ring 9275 with an open lower side and extension portions 9277 on both sides extending downward from both ends of the open lower side of the body ring 9275 .

A drain hole 9271 is formed between the extension portions 9277 on both sides.

The spacing between the extensions 9277 on both sides is 6.5 mm.

The drain port 9271 serves to smoothly drain the water condensed on the suction duct by the cold air to the drain member 1101 through the guide portion 1200 riding the cold air exhaust duct 9212 .

The drain member 1101 also serves to guide the defrost water generated by melting frost formed on the evaporator assembly 1100 downward.

In addition, the cold air exhaust duct 9212 is provided with a cold air exhaust passage 9212a communicating with the installation space 1010 of the evaporator case 1000 to be described later inside the cold air intake passage 9211a, and the cold air sucked through the evaporator case ( 1000) is a configuration for discharging to the cold air intake (1002).

The cold air exhaust duct 9212 corresponding to the lower side of the fan assembly 920 is formed to be inclined downward from the front to the rear.

When the driving unit fan duct assembly is assembled with the evaporator case 1000 , the lower side of the fan housing 921 is disposed in parallel with the inclined surface of the central portion of the front side of the evaporator case 1000 to be described later. Therefore, it is easy to assemble the driving unit fan duct assembly with the evaporator case 1000 .

A scroll-shaped space is provided inside the fan accommodating part 923 , and the scroll-shaped space SL inside the fan accommodating part 923 is between the cold air intake duct 9211 and the cold air exhaust duct 9212 . formed and communicated in

The third coupling flange 9201 is inserted into the inside of the first coupling flange 9101 when the fan assembly 920 is coupled to the driving unit assembly 910, and the outer circumferential surface is in close contact with the inner circumferential surface of the first coupling flange 9101. It is coupled, thereby improving the airtightness of the coupled portion, thereby preventing the loss of cold air flowing inside the driving unit assembly 910 and the fan assembly 920 .

The third coupling flange 9201 is formed in the suction duct.

The third coupling flange 9201 is coupled to the fifth coupling flange 9501 of the fan receiving portion 923 .

In the vicinity of the upper left corner and the lower right side of the fifth coupling flange 9501, the rear fixing parts 9103b to which the fastening members B1 and B2 for coupling the fan assembly 920 and the driving unit assembly 910 are fastened are provided one by one. is formed

A front fixing part 9103a is formed in the first coupling flange 9101 of the driving unit assembly 910 .

The fixing part of the present invention includes a front fixing part 9103a formed on the driving unit assembly 910 and a rear fixing part 9103b formed on the fan assembly 920 .

The fastening members B1 and B2 are inserted and fastened from the front to the rear of the first coupling flange 9101 of the driving unit assembly 910 .

The driving part fan duct assembly 900 of the present invention forms a common fixing part in the first coupling flange 9101 of the driving part assembly 910 and the fan receiving part 923 of the fan assembly 920, and the middle The blocking wall 9134, the suction duct part, and the third sealing material 928, which are structures, are formed with depressions 9134a, 9134b, 927a, 927b, 928a, 928b to be described later, which are structures in which both sides are caught by the fixing part, so that the corresponding components are formed. When all are combined, there is an effect of being compactly combined.

The depressions formed in the blocking wall 9134, the suction duct portion, and the third sealing material 928 are referred to as first, second, and third depressions 9134a, 934b, 927a, 927b, 928a, and 928b, respectively.

The first, second, and third recessed portions 9134a, 934b, 927a, 927b, 928a, and 928b are formed so that each component is recessed inward as shown in FIG. 9 .

The first, second, and third depressions 9134a, 934b, 927a, 927b, 928a, and 928b are formed at the same position in each component.

The depressions 9134a, 9134b, 927a, 927b, 928a, and 928b are formed on both the left and right sides of the driving fan duct assembly 900 .

Specifically, one is formed in the upper right corner and the lower left corner.

When the assembly of the driving unit fan duct assembly 900 is completed, each of the depressions 9134a, 9134b, 927a, 927b, 928a, and 928b are arranged side by side in front and back.

When assembling the driving unit fan duct assembly 900, an upper front fixing part 9103a is disposed in the upper first recessed parts 9134a and 9134b, and the lower front height is disposed in the lower first recessed part 9134a, 9134b. Government 9103a is deployed. In addition, the upper rear fixing part 9103a is disposed in the upper second and third recessed parts 927a and 928a, and the lower rear fixing part 9103b is disposed in the lower second and third recessed parts 927b and 928b. are placed

When assembling the driving unit assembly 910 and the fan assembly 920, first, as shown in FIGS. 6 and 7, the driving unit assemblies 910 are assembled with each other, and then the fan assemblies 920 are assembled with each other.

At this time, when assembling the fan assembly 920, the rear fixing part 9103b is located in the second and third recessed parts 927a, 927b, 928a, 928b, so the suction duct part and the third sealing material 928 are the rear fixing part ( 9103b), it can be temporarily assembled so as not to be easily separated by being caught in the fan assembly 920 , which facilitates assembly of the fan assembly 920 .

Thereafter, the fastening members B1 and B2 are inserted and fastened in the direction of the front fixing part 9103a and the rear fixing part 9103b from the front of the first coupling flange 9101 to drive the assembly 910 and the fan assembly 920. complete the assembly of

Two second detachable projections 9213 are formed on both sides of the front end of the suction duct portion 927, that is, on the left and right portions of the third coupling flange 9201, respectively.

The second detachable protrusion 9213 may be formed differently in number as needed, and by being fitted into the first detachable hole 9131 of the driving unit housing 913, the first coupling flange 9101 and the third coupling flange 9201 ) are inserted into each other and fixed in close contact with each other.

In addition, as the second detachable protrusion 9213 is fitted or unfitted into the first detachable hole 9131 of the driving unit housing 913 , the fan housing 921 may be detachable from the driving unit housing 913 .

A discharge duct portion 9214 made of a sponge material is adhered to the lower edge of the fan accommodating portion 923 and the suction duct portion.

When the fan assembly 920 is accommodated in the fan accommodating part 1020 to be described later, the exhaust duct part 9214 is in close contact with the inclined surface of the front side central part of the evaporator case 1000 to be described later to the fan assembly 920 and the fan accommodating part. The lower joint between the 1020 can be sealed.

A cold air discharge passage 9212a is formed in the discharge duct portion 9214 .

A wire guide hole 9216 for guiding a wire for a fan electrically connected to the rotation motor IM is formed through the rear of the fan accommodating part 923 .

The fan assembly 920 is disposed on the rear side of the driving unit assembly 910 , and the wire guide hole 9216 is formed on the rear side of the fan assembly 920 and is formed on the rear side of the fan and rotation motor IM. do.

A guide wall 9217 fastened to the rear surface of the fan receiving part 923 is formed in the wire guide hole 9216 .

The guide wall 9217 guides the electric wire for the fan in a certain direction so that the electric wire electrically connected to the rotary motor IM is not unnecessarily caught in or damaged by other components.

The guide wall 9217 may be formed to protrude toward the rear side of the wire guide hole 9216, and at least a portion of the guide wall 9217 may be formed to be rounded in a direction to guide the electric wire for the fan.

The fan accommodating part 923 except for the fifth coupling flange 9501 part has a left side part and a right side part formed side by side vertically, an upper surface connected to the left and right side surfaces is formed in a curved surface, and a cut-off part 929 on the left side part. is formed

The fan accommodating part 923 is provided with the wire support part.

The wire support part passes through the guide wall 9217 and is guided forward in the first wire support part 9218 and the first wire support part 9218 to prevent the fan wire guided forward from being separated to the upper and left sides, and then the second combination It includes a second wire support portion 9219 that prevents the fan wire guided to the space surrounded by the flange 9102 from being separated to the upper and left sides.

The first wire support part 9218 is formed to protrude upward from the rear side of the upper surface of the fan accommodating part 923 and is disposed above the guide wall 9217 .

The second wire support portion 9219 is composed of a groove and a protruding piece on the rear upper side of the third coupling flange 9201 .

The wire connected to the rotary motor (IM) by the wire guide hole 9216, the guide wall 9217, and the first wire support part 9218 is connected to the outside without being entangled in the fan 922 to be connected to the harness assembly (HA). can

A fan 922 is installed inside the fan accommodating part 923 .

The fan 922 is rotatably installed in the space of the scroll shape SL inside the fan accommodating part 923 and is rotated by the rotation motor IM.

When the fan 922 is rotated by the rotation motor IM, the cold air exhaust duct 9212 after sucking the cold air from the ice storage bucket 800 side through the cold air intake passage 9211a of the cold air intake duct 9211. ) through the cold air discharge passage 9212a to discharge the cold air to the cold air intake 1002 of the evaporator case 1000 to be described later.

The fan 922 serves to circulate the cool air provided by the evaporator assembly 1100 between the ice-making chamber 60 and the evaporator case 1000 by sucking in and discharging the cold air as described above.

The fan 922 is integrally formed with a motor receptor (not shown) in which the rotation motor IM is accommodated, a plurality of blades extending forward from the rear end of the motor receptor, and front ends of the plurality of blades to support the blades. It comprises a support ring.

As shown in FIG. 4 , the cross-sectional shape of the support ring includes a first support ring 9221 inclined upward from the front side to the rear side, and a second support ring 9223 extending upward from the first support ring 9221 . ) is included.

The first support ring 9221 is disposed to be spaced apart from the rear side of the blocking ring 9273 by 4 mm in the vertical direction.

The second support ring 9223 is disposed at a rear side of the blocking ring 9273 so as to be spaced apart by 4 mm in the front-rear direction.

The first support ring 9221 is disposed so that the front end is spaced apart from the rear end of the cold air intake duct 9211 by 4.5 mm.

In this embodiment, the inner diameter of the blocking ring 9273 is 79.4 mm, the length in the front-rear direction is 7 mm, and the thickness is 2 mm.

In addition, the inner diameter of the cold air intake duct 9211 is 64 mm and the outer diameter is 79.4 mm.

A detailed description of the scroll-related dimensions will be described later.

Since the blocking ring 9273 covers the separation distance D between the cold air intake duct 9211 and the support ring, there is an effect of preventing the cold air flowing into the fan assembly 920 from flowing out. Thus, the wind volume is secured.

A detailed flow analysis result for securing the air volume will be described later.

On the other hand, the cold air discharge duct 930 is installed on the upper side of the driving unit housing (913).

The cold air discharge duct 930 is configured to guide the cold air discharged from the cold air outlet 1001 of the evaporator case 1000 to be described later to the ice maker 700, and is detachable from the upper end of the driving unit housing 913. and is disposed between the ice maker 700 and the evaporator case 1000 .

At this time, the front end of the cold air discharge duct 930 is in close contact with the rear end of the cold air inlet duct 762 of the ice maker 700, and the rear end of the cold air discharge duct 930 is in close contact with the edge of the cold air outlet 1001 of the evaporator case 1000 do.

The cold air discharge duct 930 is provided with a cold air discharge passage 931 therein, and is formed in a shape in which the vertical width gradually decreases from the rear side to the front side, and accordingly, the cold air discharge channel 931 provided inside the cold air discharge duct 930 is formed. The flow path 931 is also formed in a form in which the vertical width gradually decreases from the rear side to the front side.

At this time, the upper portion of the cold air discharge duct 930 is formed to be inclined upward from the front to the rear side.

A second sealing material 933 made of a sponge is attached to the edge of the rear end face of the cold air discharge duct 930 to seal the joint between the cold air discharge duct 930 and the evaporator case 1000 to be described later.

A fourth coupling flange 9301 having a rectangular shape is formed at a lower portion of the cold air discharge duct 930 .

The fourth coupling flange 9301 is in close contact with the outer circumferential surface of the second coupling flange 9102 while being fitted to the outside of the second coupling flange 9102 when coupling the cold air discharge duct 930 to the driving unit assembly 910 . combined with At this time, the cold air discharge duct 930 covers the open upper part of the second coupling flange 9102 . Therefore, the wires and harnesses (W, H, HA) disposed in the inner space of the second coupling flange 9102 can be protected from the outside.

At this time, the fourth coupling flange 9301 is preferably provided with a hole (not shown) for receiving the fan wire formed at a position corresponding to the fan wire inlet hole 9105 described above.

Two second detachable holes 932 are formed on both sides of the lower end of the cold air discharge duct 930, that is, on the left and right sides of the fourth coupling flange 9301, respectively.

The second detachable hole 932 may be formed in a different number as needed, and the first detachable protrusion 9132 of the driving unit housing 913 is fitted by fitting the second coupling flange 9102 and the fourth coupling flange 9301 . ) are inserted into each other and fixed in close contact with each other.

In addition, in the second detachable hole 932 , the cold air discharge duct 930 may be detachably attached to the drive unit housing 913 as the first detachable protrusion 9132 of the driving unit housing 913 is fitted or unfitted.

The driving unit assembly 910, the fan assembly 920, and the cold air discharge duct 930 described as described above are assembled by fitting each other to form a driving unit fan duct assembly 900, which is one assembly, thereby driving the driving unit assembly 910. , the fan assembly 920 and the cold air discharge duct 930 are in the state of the driving unit fan duct assembly 900 modularized into one assembly without the need to be individually installed in the ice-making chamber 60. Through a single installation process, the ice-making chamber (60) can be installed.

In other words, the driving unit fan duct assembly 900 includes the fan assembly 920 and the modularized driving unit assembly 910 and the cold air discharge duct 930 as the fan assembly 920 is installed in the fan accommodating part 1020 to be described later. It will be installed while being placed in the exact position to be installed.

The driving unit assembly 910 , the fan assembly 920 , and the cold air discharge duct 930 constituting the driving unit fan duct assembly 900 may be separately fastened with a fastening member in addition to fitting with each other.

Hereinafter, the evaporator case and related components will be mainly described with reference to FIGS. 12 and 13 .

The inner case 200 is provided with a mounting part 260 .

The mounting part 260 is a space recessed inwardly over the upper wall, the rear wall, and the left wall of the inner case 200 , and is formed immediately behind the ice-making chamber 60 .

That is, the mounting part 260 is a space in which the upper rear left corner of the inner case 200 is recessed inwardly.

The mounting part 260 is a space in which the evaporator case 1000 to be described later is accommodated and mounted, and a communication hole 261a penetrating in the front-rear direction is formed on the inner front surface of the mounting part 260 .

A first mounting surface 261 , a second mounting surface 262 , and a separation surface 263 are formed inside the mounting part 260 .

The first mounting surface 261 is the inner front surface of the mounting unit 260 , the second mounting surface 262 is the inner right side of the mounting unit 260 , and the separation surface 263 is the inner bottom surface of the mounting unit 260 .

The above-described communication hole 261a is formed in the first mounting surface 261 , and the separation surface 263 has an inclination that gradually decreases from the front to the rear side.

Meanwhile, the evaporator case 1000 is provided between the rear wall of the outer case 100 and the rear wall of the inner case 200 .

The evaporator case 1000 is a configuration in which the evaporator assembly 1100 installed through the opening 101 formed in the rear wall of the outer case 100 is accommodated, and the evaporator assembly 1100 is the evaporator case 1000 through the outer case. It is installed between the rear wall of the 100 and the rear wall of the inner case 200 , and is installed to be disposed on the rear side of the ice-making chamber 60 .

The evaporator case 1000 is mounted with the front part accommodated in the mounting part 260 formed on the rear wall of the inner case 200, and the rear end is fastened to the inner surface of the rear wall of the outer case 100 to be coupled to the body 10 will be.

Hereinafter, the evaporator case 1000 will be described in more detail.

The evaporator case 1000 is generally formed in a shape similar to a rectangular box, and the vertical height of the evaporator case 1000 is shorter than the vertical height of the mounting part 260 .

The front side of the evaporator case 1000 is in close contact with the first mounting surface 261 , and the right side of the evaporator case 1000 is in close contact with the second mounting surface 262 .

In addition, the lower end of the evaporator case 1000 may be spaced apart from the separation surface 263 of the mounting part 260 , so that the drain member 1101 may be coupled to the lower end of the evaporator case 1000 .

As described above, a fastening member (not shown) is integrally fastened to the evaporator case 1000 and the compartment 600 mounted on the mounting unit 260 of the inner case 200, so that the inner case 200 and the compartment 600 are connected to each other. is fixed

A support flange 1030 extending in the circumferential outer direction is formed on the rear edge of the evaporator case 1000 .

The support flange 1030 is configured so that the outer case 100 can be in close contact with the rear end of the evaporator case 1000 mounted on the inner case 200 , and the rear surface is in close contact with the inner surface of the rear wall of the outer case 100 . do.

Through this, the evaporator case 1000 may be disposed and fixed between the inner case 200 and the outer case 100 .

An installation space 1010 and a fan accommodating part 1020 are formed in the evaporator case 1000 .

The installation space 1010 is a space in which the evaporator assembly 1100 and the guide part 1200, which will be described later, are installed, and is provided in the evaporator case 1000 .

The installation space 1010 has an open rear surface, and the rear opening portion of the installation space 1010 is formed in the same shape as the opening 101 of the outer case 100 , and the installation space 1010 is located immediately of the opening 101 . It is located in front and communicates with the opening 101 .

A drain hole 1012 is formed on an inner lower surface of the installation space 1010 , and a drain member 1101 is inserted into the drain hole 1012 .

A guide part 1200, which will be described later, is accommodated and installed on the inner front side of the installation space 1010 , and an evaporator assembly 1100 to be described later is accommodated and installed on the inner rear side of the installation space 1010 .

More specifically, in the front portion of the installation space 1010, a guide for guiding the flow of cold air sucked into the installation space 1010 from the ice-making chamber 60 through a cold air intake 1002 to be described later to the lower end of the evaporator assembly 1100. The unit 1200 is assembled, and an evaporator assembly 1100 for providing cool air to the ice-making chamber 60 through heat exchange by a refrigeration cycle is provided at the rear side of the installation space 1010, that is, on the rear side of the guide unit 1200. is installed

For reference, it is referred to as a cooling unit including the fan assembly 920 and the evaporator assembly 1100 , and the cooling unit is installed outside the ice-making chamber 60 .

Hereinafter, the description of the evaporator assembly 1100 and the guide part 1200 installed in the installation space 1010 will be described in more detail later.

On the front side of the evaporator case 1000, a cold air outlet 1001 and a cold air inlet 1002 communicating with the ice-making chamber 60 through the communication hole 261a formed in the first mounting surface 261 are formed, and the cold air inlet ( A fan assembly 920 is provided on the 1002 side.

The cold air outlet 1001 is formed through the front side upper part of the evaporator case 1000 in the front-rear direction to communicate the installation space 1010 and the ice-making chamber 60 , and the cold air inlet 1002 is the front surface of the evaporator case 1000 . It is formed vertically through the inclined surface of the central side, that is, the inclined lower surface of the fan receiving part 1020 to be described later to communicate the installation space 1010 and the ice-making chamber 60 .

The cold air outlet 1001 is connected to the cold air outlet duct 930 so that the cold air heat-exchanged by the evaporator assembly 1100 in the installation space 1010 flows to the ice machine 700 installed in the upper part of the ice making chamber 60 . and the cold air intake 1002 is connected to the cold air exhaust duct 9212 so that the cold air that has passed through the ice maker 700 and the ice storage bucket 800 flows into the installation space 1010 of the evaporator case 1000. to be.

At this time, the cold air sucked into the installation space 1010 through the cold air intake 1002 is guided to the lower side near the center of the installation space 1010 according to the guidance of the guide part 1200 to be described later, and the lower end of the evaporator assembly 1100 It will flow from the top to the top.

A fan accommodating portion 1020 concave toward the rear is formed in the front central portion of the evaporator case 1000 .

The cold air inlet 1002 is formed on the inclined lower surface of the inside of the fan accommodating part 1020 , and the fan accommodating part 1020 communicates with the cold air inlet 1002 .

A fan assembly 920 for circulating cold air provided by heat exchange of the evaporator assembly 1100 is installed in the fan accommodating part 1020 to be disposed on the side of the cold air inlet 1002, more specifically, directly above the cold air inlet 1002 do.

The cold air exhaust duct 9212 of the fan assembly 920 is in close contact with the upper end of the cold air inlet 1002 so that the cold air exhaust passage 9212a and the cold air inlet 1002 can be in airtight communication.

The overall shape of the front side of the installation space 1010 corresponds to the overall shape of the guide part 1200 .

A discharge guide passage 1213 is formed in the guide part 1200 to guide the cold air generated by the evaporator 1110 in the installation space 1010 to the ice-making chamber 60 side, and a suction guide passage 1212 is formed. The cold air sucked by the fan assembly 920 from the ice-making chamber 60 side may be guided into the installation space 1010 .

As described above, since the evaporator case 1000 is provided with the installation space 1010 in which the evaporator assembly 1100 is installed and the fan accommodating part 1020 in which the fan assembly 920 is installed, the evaporator assembly 1100 and It is very easy to assemble the fan assembly 920 , and each of the components can be arranged compactly.

Meanwhile, the evaporator assembly 1100 is accommodated and installed in the evaporator case 1000 .

The evaporator assembly 1100 generates cold air in the installation space 1010 to discharge the cold air to the cold air outlet 1001 formed in the evaporator case 1000 .

On the other hand, the fan 922 is formed by radially disposing a plurality of blades based on a central axis.

11, the outer diameter of the fan 922 is 'R', the minimum distance between the outer end of the fan 922 and the cutoff is 'Cd', and the diameter of the cutoff is 'Cr'.

In this embodiment, the outer diameter of the fan 922 is 80 mm, Cd is 4.5 mm, and the diameter of Cr is 7 mm.

In this embodiment, the value of a derived through Equation 1. 'a=(outer diameter of fan 922 / 2 + Cd)' is 44.5 mm by adding 40 mm, which is the radius of the fan 922 + 4.5 mm, which is the Cd value. At this time, the value of a becomes the value of the fan radius when r0 in [Table 1].

'을 사용한다.Equation 'a = bx' to define the scroll dimension using a value derived through Equation 1

' is used.

'에서 a와 b는 고정값으로, 'a'는 상기 44.5mm, 증가비 'b'는 0.06이다. 수식 2를 통해 도출된 스크롤 치수를 하기 [표 1]에 각도(

)별로 기재하였다.Equation 2. 'a = bx in this embodiment

In ', a and b are fixed values, 'a' is the above 44.5 mm, and the increase ratio 'b' is 0.06. Scroll dimensions derived through Equation 2 are shown in [Table 1] below

), respectively.

For example, as shown in FIG. 11 , the radius value r0, which is the distance between the cut-off part 929 and the central axis of the fan 922, is 44.5 mm, and the point at r0 is 45 degrees apart in the rotation direction of the fan 922. The radius value r1, which is the distance between the scroll SL forming surface and the central axis of the fan 922, is 47.2 mm.

In FIG. 12 , only r0, r1, and r2 are indicated for better understanding, and the remaining r3 to r10 are omitted.

[Degree]

[Degree] r [mm] r0 0 44.5 r1 45 47.2 r2 65 48.1 r3 85 49.6 r4 110 51.1 r5 135 52.6 r6 160 54.1 r7 185 55.6 r8 210 57.1 r9 235 58.6 r10 260 60.1

Meanwhile, the flow analysis performed by applying the fan to which the blocking ring 9273 of this embodiment is added will be described below.

[Table 2] below is a comparison table for the rotation speed and air volume of the fan of the present invention and the conventional fan, and the unit of the rotation speed is rpm and the unit of the air volume is cmm.

conventional centrifugal fan Centrifugal fan of the present invention number of revolutions 2500 2700 2500 2700 air volume 0.129 0.138 0.137 0.141

As a result of flow analysis of the fan of the present invention, as shown in FIG. 14 and [Table 2], the present invention with a blocking ring 9273 is at 2500 rpm when the conventional technology without a blocking ring 9273 is 2700 rpm It can be seen that the air volume is improved compared to the centrifugal fan of the same size as 0.137cmm, which is similar to the air volume (0.138cmm), is secured.

While the increase ratio of the prior art is usually 0.1 to 0.2, the increase ratio 'b' of the present invention is 0.06, so the present invention can implement a compact size of the centrifugal fan while maintaining the air volume.

As described above, although described with reference to preferred embodiments of the present invention, those of ordinary skill in the art may vary the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. It can be implemented by changing or modifying it.

** Explanation of key symbols **
10: body 60: ice-making chamber
100: outer case 200: inner case
700: ice maker 800: ice storage bucket
900: driving unit fan duct assembly 910: driving unit assembly
920: fan assembly 921: fan housing
922: fan 923: fan receiving part
927: suction duct part 928: third sealing material
1000: evaporator assembly

Claims (12)

a refrigerator body divided into a refrigerating compartment, a freezing compartment and an ice making compartment;
The ice maker includes an ice maker, an ice storage bucket, and a driving unit fan duct assembly,
The driving unit fan duct assembly includes a driving unit assembly providing driving force to the ice storage bucket, and a fan assembly connected to the driving unit assembly,
A refrigerator in which the driving unit assembly and the fan assembly are fitted. The method according to claim 1,
The fan assembly includes a fan;
a rotation motor for rotating the fan;
a fan housing in which the fan and the rotating motor are accommodated; and
A refrigerator including a suction duct for coupling with the driving unit assembly. 3. The method according to claim 2,
Fixing parts corresponding to each other are formed in the fan housing and the driving unit assembly,
A refrigerator having a depression in which the fixing part is seated in the suction duct part. 3. The method according to claim 2,
A refrigerator in which a wire guide hole for guiding an electric wire of the rotating motor is formed in the fan housing. The method according to claim 1,
A refrigerator having a grill-type blocking wall interposed between the driving unit assembly and the fan assembly. a refrigerator body divided into a refrigerating compartment, a freezing compartment and an ice making compartment;
The ice maker includes an ice maker, an ice storage bucket, and a driving unit fan duct assembly,
The driving unit fan duct assembly includes a driving unit assembly providing driving force to the ice storage bucket, and a fan assembly connected to the driving unit assembly,
The fan assembly includes a blocking ring. 7. The method of claim 6,
The fan assembly includes a fan;
a rotation motor for rotating the fan;
a fan housing in which the fan and the rotating motor are accommodated; and
and a suction duct for coupling with the driving unit assembly,
The blocking ring is formed on an inner edge of the cold air intake passage of the suction duct. 7. The method of claim 6,
The fan housing includes a cut-off portion formed on the side of the fan, the cut-off portion, a scroll-shaped space in which the fan is accommodated, a cold air intake duct provided with a cold air intake passage communicating with one side of the space, and the other side of the space communicates Including a cold air exhaust duct provided with an exhausted cold air passage,
The cold air intake duct surrounds the periphery of the impeller in front of the impeller,
A blocking ring surrounding the space formed by separating the cold air intake duct and the impeller is formed,
The shape of the scroll increases in a predetermined increasing ratio from the cut-off part toward the rotation direction of the impeller. 9. The method of claim 8,
The increase ratio is 0.06 refrigerator 9. The method of claim 8,
The lower side of the fan housing is disposed parallel to the inclined surface of the front side of the evaporator case. 11. The method according to any one of claims 1 to 10,
The refrigerator foaming jig in which the refrigerating chamber and the ice-making chamber are simultaneously formed into independent spaces by foaming 12. The method of claim 11,
The freezer compartment is a refrigerator foaming jig formed as an independent space simultaneously with the refrigerating compartment and the ice making compartment by foaming.

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