WO2022135352A1

WO2022135352A1 - Refrigerator

Info

Publication number: WO2022135352A1
Application number: PCT/CN2021/139788
Authority: WO
Inventors: 小松肇
Original assignee: 海尔智家股份有限公司; 青岛海尔电冰箱有限公司; Aqua 株式会社
Priority date: 2020-12-22
Filing date: 2021-12-20
Publication date: 2022-06-30
Also published as: CN114659319A; JP2022098936A; CN114659319B; CN116710720A

Abstract

A refrigerator, comprising: a plurality of air paths for air blown into a storage compartment to flow through and an air door for respectively opening or closing the air paths, wherein the air door is provided with baffles and a baffle driving part; the baffles are arranged corresponding to each of the air paths; the baffle driving part drives the opening or closing action of the baffles; and a plurality of the baffles are arranged in a front-back direction and a plurality of the baffles are arranged in a left-right direction.

Description

refrigerator

technical field

The present invention relates to a refrigerator, in particular to a refrigerator with a damper arranged in an air passage.

Background technique

Generally, in a refrigerator, the storage compartment is cooled to a cooling temperature range by blowing the air cooled by the evaporator of the refrigerating cycle by a fan via an air supply passage.

In Patent Document 1 and Patent Document 2, a double damper device provided with a plurality of dampers is described. Specifically, a plurality of dampers are arranged in the left-right direction, and each damper is opened or closed respectively, thereby realizing opening or closing of each air supply passage. In this way, the air volume of the air blown to each storage compartment can be accurately controlled, and each storage compartment can be cooled to a predetermined cooling temperature range.

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Application Laid-Open No. 11-194826

[Patent Document 2] Japanese Patent No. 3724978.

In the damper device described in each of the above-mentioned patent documents, two dampers are provided in the left-right direction. For this reason, when each of the three or more storage compartments is provided with an air passage, it is necessary to additionally provide a damper. On the other hand, if the number of the dampers increases, the outer shape of the dampers becomes large, and therefore, there is a problem of compressing the interior space of the refrigerator. In addition, there arises a problem that the air duct resistance increases in the air duct provided with each damper.

In view of this, it is necessary to improve the existing refrigerators to solve the above problems.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a refrigerator including a damper having a compact outer shape and capable of reducing air path resistance.

In order to achieve the above object, the present invention provides a refrigerator comprising: a plurality of air passages for the air blown into the storage compartment to flow and a damper for opening or closing the air passages respectively, the damper having a shutter and a shutter drive The baffles are provided corresponding to each of the air passages, the baffle driving part drives the opening or closing of the baffles, and the baffles are provided in a plurality in the front-rear direction and in the left-right direction. There are multiple.

Further, the baffle driving part is disposed between the adjacent baffles in the left-right direction.

Further, the shutter driving part has a casing, and a rib or a recessed portion is provided on the outer surface of the casing, and the air passage heat insulating member forming the air passage is brought into contact with the rib or the concave portion.

Further, the baffle plate has a first baffle plate and a second baffle plate adjacent to the first baffle plate, a first baffle plate frame is arranged around the first baffle plate, and a first baffle plate frame is arranged around the first baffle plate. A second baffle frame is arranged around the baffle, and on both sides of the gap between the first baffle frame and the second baffle frame, the first baffle frame and the second baffle frame One of them is set higher than the other.

Further, a cavity portion is provided between the adjacent baffles in the left-right direction.

Further, the cavity portion is an inner space formed by a synthetic resin having a cap-shaped cross section.

Further, the shutter driving part has a plurality of gears, which are located at the central position of the damper to rotate the shutter.

Further, each of the first and second baffles is provided with a rotating shaft located at its side end, and the rotating shaft is connected to the baffle gear of the baffle driving part in a non-relatively rotatable manner.

Further, the baffle drive part has a motor, a motor gear rotated by the motor, a transmission gear meshed with the motor gear, a driven gear integrated with the transmission gear, and a driven gear connected with the driven gear. The baffle gear meshed with the gears, the rotating shaft of the first baffle is inserted into the baffle gear in a non-relatively rotatable manner, and the gear ratio of the baffle gear is smaller than that of the driven gear.

Further, the damper is assembled at the lower end of the air passage heat insulating member, and the air passage heat insulating member comprises a first air passage heat insulating member and a lower end assembled on the front side of the first air passage heat insulating member The second air duct insulation part of the part.

The beneficial effects of the present invention are as follows: the refrigerator of the present invention includes a damper with a compact shape and can reduce the air path resistance, and by arranging a plurality of baffles in the front-rear direction and the left-right direction, the air path resistance in the damper can be reduced, and further , the difference in air volume between the air passage on the left side and the air passage on the right side can be reduced. Therefore, each storage compartment can be efficiently cooled to a predetermined temperature.

Description of drawings

FIG. 1 is a side sectional view of the internal structure of the refrigerator of the present invention.

Fig. 2 is a front view of the air duct structure of the refrigerator of the present invention.

Fig. 3 is a perspective view of an air duct cover and the like constituting an air duct in the refrigerator of the present invention.

4 is an exploded perspective view of an air duct cover, an air duct heat insulating member, and a damper constituting an air duct in the refrigerator of the present invention.

Fig. 5A is a perspective view of the damper of the refrigerator of the present invention viewed from above from the front side.

Fig. 5B is a perspective view of the damper of the refrigerator of the present invention viewed from the lower side of the rear side.

Fig. 6A is a perspective view of the air door and the baffle plate viewed from above the front side of the refrigerator of the present invention.

6B is a perspective view of the refrigerator according to the present invention as viewed from the upper front side of the baffle frame.

Fig. 7A is a perspective view of the damper of the refrigerator of the present invention viewed from the front right side.

7B is an enlarged perspective view of the respective gears constituting the damper viewed from the front right side of the refrigerator of the present invention.

Fig. 8 is a perspective view of an open state of the damper of the refrigerator of the present invention.

Fig. 9A is a perspective view of the damper of the refrigerator of the present invention viewed from the front left side.

9B is an enlarged perspective view of the respective gears constituting the damper viewed from the front left side of the refrigerator of the present invention.

Fig. 10A is a perspective view of the damper and the air duct heat insulating member of the refrigerator of the present invention viewed from the front upper side.

Fig. 10B is a perspective view of the refrigerator of the present invention as viewed from the rear lower side of the damper and the air duct heat insulating member.

10C is an enlarged perspective view of the damper viewed from the front upper side according to the present invention.

Fig. 11A is a perspective view of the damper and the air duct heat insulating member of the refrigerator of the present invention as viewed from the front upper side.

Fig. 11B is a perspective view of the refrigerator of the present invention as viewed from the rear lower side of the damper and the air duct heat insulating member.

Fig. 11C is an enlarged perspective view of the air door viewed from the front upper side of the refrigerator of the present invention.

Fig. 12 is a cutaway perspective view of the structure of the baffle plate and each air passage of the refrigerator of the present invention.

Fig. 13A is a diagram showing the operation of the shutters and the respective air passages of the refrigerator of the present invention, and is a cross-sectional view showing a state in which only one shutter is opened.

Fig. 13B is a diagram showing the operation of the shutter and each air passage of the refrigerator of the present invention, and is a cross-sectional view showing a state in which only the other shutter is opened.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Hereinafter, the refrigerator 10 which concerns on embodiment of this invention is demonstrated in detail based on drawing. In the following description, in principle, the same components are denoted by the same reference numerals, and overlapping descriptions are omitted. In addition, in the following description, each direction of up, down, front, rear, left, and right is used appropriately, and the left and right are shown when the refrigerator 10 is viewed from the front. In addition, in the present embodiment, as the refrigerator 10, a refrigerator having a storage compartment in a freezing temperature range and a refrigeration temperature range is exemplified, but the refrigerator 10 may be a refrigerator having only a storage compartment in the freezing temperature range, or a refrigerator only. Temperature range of pantry refrigerators.

FIG. 1 is a side sectional view showing the refrigerator 10 as a whole. The refrigerator 10 mainly includes a heat insulation box 11 and a storage compartment formed inside the heat insulation box 11 . As the storage compartment, a refrigerator compartment 12 , a fresh-keeping compartment 15 , and a freezer compartment 13 are formed from the upper side. The front opening of the refrigerating compartment 12 is closed by the heat insulating door 18 , the front opening of the fresh-keeping compartment 15 is closed by the heat insulating door 19 , and the front opening of the freezing compartment 13 is closed by the heat insulating door 20 and the heat insulating door 21 .

Below the interior of the refrigerating compartment 12, a sub-refrigerating compartment 121 and a sub-refrigerating compartment 122 are formed. The sub-refrigerating compartment 121 and the sub-refrigerating compartment 122 are partitioned by a synthetic resin panel. The sub-refrigerating compartment 121 and the sub-refrigerating compartment 122 are chilled compartments for storing meat, seafood, and the like, for example.

The thermal insulation box 11 includes an outer box 111, an inner box 112, and a thermal insulation material 113. The outer box 111 is formed of a steel plate bent into a predetermined shape. The inner box 112 is provided inside the outer box 111 and is made of synthetic resin. It consists of a board, and the said heat insulating material 113 is filled between the outer case 111 and the inner case 112. In addition, the refrigerating compartment 12 and the fresh-keeping compartment 15 are partitioned by the heat-insulating wall 281 , and the fresh-keeping compartment 15 and the freezing compartment 13 are partitioned by the heat-insulating wall 282 . The heat insulating wall 281 and the heat insulating wall 282 have the same heat insulating structure as the heat insulating box 11 .

A cooling chamber 115 is formed behind the freezing chamber 13 . Inside the cooling chamber 115, an evaporator 162 serving as a cooler is arranged. Moreover, the machine room 14 is partitioned and formed in the back of the lower end side of the refrigerator 10, and the compressor 161 is arrange|positioned in the machine room 14. As shown in FIG. The evaporator 162 and the compressor 161 form a refrigerant compression refrigeration cycle. The refrigeration cycle includes a compressor 161 , a condenser (not shown), an expansion device (not shown), and an evaporator 162 . By operating the refrigeration cycle, the air inside the cooling chamber 115 is cooled by the evaporator 162, and the air is blown to each storage chamber by the fan 24, so that the internal temperature of each storage chamber becomes a predetermined cooling temperature range. The respective components constituting the refrigerating cycle are connected to each other by refrigerant pipes made of metal pipes such as copper pipes.

The fan 24 is a centrifugal fan or an axial fan that blows air cooled by the evaporator 162 . The air passage 48 extends upward from the fan 24 . The air outlet 44 is formed in the upper end of the air passage 48, and the air outlet 16 is formed in the middle part. Air for cooling the refrigerator compartment 12 is blown out from the air outlet 44 and the air outlet 16 . The structure of the air passage 48 will be described later with reference to FIG. 4 .

The air outlet 46 is an opening of the air passage 48 formed in the rear of the sub-refrigerating compartment 122 . Air for cooling the sub-refrigerating compartment 122 is blown out from the air outlet 46 . In addition, the air outlet 47 is an opening of the air passage 48 formed in the rear of the fresh-keeping chamber 15 . The air for cooling the fresh-keeping chamber 15 is blown out from the air outlet 46 .

The air outlet 17 is an opening formed in a partition wall in front of the cooling chamber 115 , and the air for cooling the freezing chamber 13 is blown out from the air outlet 17 .

The damper 30 is provided in the middle part of the air passage 48 , and performs an opening and closing operation of the air passage 48 . Details of the damper 30 will be described later with reference to FIG. 6 and the like. In addition, the damper 30 is disposed directly above the fan 24 .

FIG. 2 is a front view showing an air duct structure of the refrigerator 10 . In this figure, the refrigerator compartment 12 and the like are shown by dotted lines.

As described above, the air passage 48 is formed above the fan 24 , and the damper 30 is provided at the lower portion of the air passage 48 . An air outlet 44 , an air outlet 16 , an air outlet 46 , and an air outlet 47 are formed in the air passage 48 .

The return air passage 224 is an air passage that connects the fresh chamber 15 and the cooling chamber 115 , and circulates air that cools the fresh chamber 15 and returns to the cooling chamber 115 . Two return air passages 224 are formed at both ends of the refrigerator 10 in the left-right direction. A return port 221 is formed at the upper end of the return air passage 224 , and the air that has cooled the fresh-keeping chamber 15 flows to the return air passage 224 from the return port 221 . A return port 222 is formed at the lower end of the return air passage 224 , and the air returned from the return air passage 224 to the cooling chamber 115 passes through the return port 222 .

The air outlet 17 is formed in the cooling chamber 115 , and the return port 223 is formed on the lower side of the air outlet 17 . The air cooled by the evaporator 162 is blown out to the freezer compartment 13 through the air outlet 17 , and the air cooled by the freezer compartment 13 is returned to the cooling compartment 115 from the return port 223 .

3 : is a perspective view which shows the air-path cover 42 etc. which comprise the said air-path 48 in the refrigerator 10. As shown in FIG.

The air duct cover 42 is a member attached to the back surface of the inner box 112 of the refrigerator 10 described above, and the air duct 48 is formed inside the air duct cover 42 . Like the inner box 112, the air passage cover 42 is formed of a synthetic resin plate.

The air outlet 44 is formed by opening the upper end surface of the air passage cover 42 . Moreover, the air outlet 16, the air outlet 45, the air outlet 46, and the air outlet 47 are formed on the front surface of the air passage cover 42 from above. As described above, the air is blown out to the refrigerator compartment 12 from the air outlet 44 and the air outlet 16 , the air is blown to the sub-refrigerator compartment 121 and the sub-refrigerator compartment 122 from the air outlet 45 and the air outlet 46 , and the air is blown to the fresh-keeping compartment 15 from the air outlet 47 .

4 is an exploded perspective view showing the air passage cover 42, the first air passage heat insulating member 41, the damper 30, and the second air passage heat insulating member 43 constituting the air passage 48 in the refrigerator 10, wherein the first air passage is insulated from the heat The part and the second air duct heat insulating part are collectively referred to as the air duct heat insulating part.

The first air passage heat insulating member 41 and the second air passage heat insulating member 43 are members that form the air passage 48 , and the second air passage heat insulating member 43 is assembled to the lower end portion on the front side of the first air passage heat insulating member 41 . In addition, the first air passage heat insulating member 41 and the second air passage heat insulating member 43 are covered by the air passage cover 42 from the front.

The first air passage heat insulating member 41 is made of a heat insulating material such as foamed resin, and the inside thereof is recessed forward to form a first air passage 482 and a second air passage 484 through which the blown air flows. The opening 55 is formed by opening the first air passage heat insulating member 41 in the upper end portion of the first air passage 482 , and the position of the opening 55 matches the position of the air outlet 46 of the air passage cover 42 . Therefore, the air rising in the first air passage 482 is blown out to the sub-refrigerating compartment 122 via the opening 55 and the air outlet 46 .

Furthermore, the opening 54 is formed by opening the first air passage heat insulating member 41 in the upper end portion of the second air passage 484 . The position of the opening 54 of the first air passage heat insulating member 41 corresponds to the position of the air outlet 44 of the air passage cover 42 . Therefore, the air rising in the second air passage 484 is blown to the refrigerator compartment 12 through the opening 54 and the air outlet 44 .

Moreover, by opening the intermediate part of the 1st air-path heat insulating material 41, the some opening part 29 is formed. The position of the opening portion 29 of the first air passage heat insulating member 41 overlaps the position of the air outlet 16 of the air passage cover 42 . Therefore, a part of the air circulating through the air passage cover 42 is blown out to the refrigerator compartment 12 via the opening 29 and the air outlet 16 .

Similar to the first air passage heat insulating member 41, the second air passage heat insulating member 43 is made of a heat insulating material such as foamed resin, and the third air passage 481 and the fourth air passage are formed by recessing the inside thereof forward. 483 Road. The opening 57 is formed by opening the upper end portion of the third air passage 481 , and the position of the opening 57 of the second air passage heat insulating member 43 matches the position of the air outlet 47 of the air passage cover 42 . Therefore, the air rising in the third air passage 481 is blown to the fresh-keeping chamber 15 via the opening 57 and the air outlet 47 . The air passage 48 includes the first, second, third and

fourth air passages

481 , 482 , 483 and 484 .

In addition, the opening 56 is formed by opening the upper end portion of the fourth air passage 483 , and the position of the opening 56 corresponds to the position of the air outlet 45 of the air passage cover 42 . Therefore, the air rising in the first air passage 482 is blown out to the sub-refrigerating compartment 121 via the opening 56 and the air outlet 45 .

The damper 30 is assembled to the lower end of the first air passage heat insulating member 41 and the lower end of the second air passage heat insulating member 43 , and has a function of opening or closing the third air passage 481 and the like. The damper 30 has a first baffle 311 , a second baffle 312 , a third baffle 313 and a fourth baffle 314 . The first baffle 311 is arranged in the third air passage 481, the second baffle 312 is arranged in the first air passage 482, the third baffle 313 is arranged in the fourth air passage 483, and the fourth baffle 314 is arranged in the second air passage 484. Details of the damper 30 will be described later with reference to FIG. 5 and the like.

FIG. 5A is a perspective view of the damper 30 viewed from the upper side of the front side, and FIG. 5B is a perspective view of the damper 30 viewed from the lower side of the rear side. In the following description, the first baffle 311 , the second baffle 312 , the third baffle 313 and the fourth baffle 314 are collectively referred to as baffles 31 , the first baffle frame 321 , the second baffle frame 322 , the third baffle The baffle frame 323 and the fourth baffle frame 324 are collectively referred to as the baffle frame 32 .

Referring to FIG. 5A , the damper 30 includes a shutter 31 and a shutter driving unit 33 , and the shutter driving section 33 drives the opening and closing operations of these shutters 31 . The first flaps 311, the second flaps 312, the third flaps 313, and the fourth flaps 314 are arranged in a matrix in the front-rear direction and the left-right direction. When viewed from above, the baffle 31 has a substantially rectangular outer edge shape as a whole.

The shutter driving part 33 is provided between the first shutter 311 and the second shutter 312 and the third shutter 313 and the fourth shutter 314 . By doing so, the opening and closing drive of the shutter 31 can be performed by one shutter driving unit 33 .

In addition, the shutter 31 is driven to open and close inside the shutter frame 32 . Specifically, the first baffle 311 is accommodated in the first baffle frame 321, the second baffle 312 is accommodated in the second baffle frame 322, and the third baffle 313 is accommodated in the third baffle In the frame 323 , the fourth baffle 314 is accommodated in the fourth baffle frame 324 .

Referring to FIG. 5B , by opening the bottom surface of the first baffle frame 321, a substantially rectangular opening 581 is formed, and when the third air passage 481 shown in FIG. 4 is closed, the first baffle 311 passes through the opening. The opening portion 581 is closed. Similarly, the opening portion 582 is formed by opening the second shutter frame 322 , and when the first air passage 482 shown in FIG. 4 is closed, the opening portion 582 is closed by the second shutter 312 . Moreover, opening part 583 is formed by opening the 3rd damper frame 323, and when closing the 4th air path 483 shown in FIG. 4, the opening part 583 is closed by the 3rd damper 313. Moreover, the opening part 584 is formed by opening the 4th damper frame 324, and when closing the 2nd air passage 484 shown in FIG. 4, the opening part 584 is closed by the 4th damper 314.

FIG. 6A is a perspective view of the damper 30 and the damper 31 as seen from the upper front side, and FIG. 6B is a perspective view of the damper frame 32 as seen from the upper side of the front side.

Referring to FIG. 6A , in the first flap 311 , a rotating shaft 491 protruding leftward is formed at the rear left end, and a rotating shaft 492 protruding rightward is formed at the rear right end. In the second flap 312, a rotation shaft 493 protruding to the left is formed at the rear left end, and a rotation shaft 494 protruding to the right is formed at the rear right end. In the third flap 313, a rotation shaft 498 protruding to the left side is formed at the rear left end portion thereof, and a rotation shaft 497 protruding to the right side is formed at the rear right end portion thereof. In the fourth flap 314, a rotation shaft 496 protruding to the left side is formed at the rear left end portion thereof, and a rotation shaft 495 protruding to the right side is formed at the rear right end portion. In this figure, the rotation shaft 495 is blocked by the shutter driving portion 33 and is not shown.

The rotating shaft 491 of the first baffle 311, the rotating shaft 493 of the second baffle 312, the rotating shaft 497 of the third baffle 313 and the rotating shaft 495 of the fourth baffle 314 are connected to the rear in a non-rotatable manner. The baffle gear 374 described above, etc.

Referring to FIG. 6B , a hole portion 501 and a hole portion 502 are formed by opening the wall portions facing each other in the left-right direction of the first shutter frame 321 in a substantially circular shape. Similarly, the hole portion 503 and the hole portion 504 are formed by opening the second shutter frame 322 . Moreover, the hole portion 507 and the hole portion 508 are formed by opening the third shutter frame 323 . Further, by opening the fourth shutter frame 324, the hole portion 505 and the hole portion 506 are formed. Here, the hole portion 502 , the hole portion 504 , the hole portion 506 , and the hole portion 508 are not necessarily formed as through holes, and may be formed as concave non-through holes recessed outward in the left-right direction.

The rotating shaft 491 and the rotating shaft 492 of the first shutter 311 shown in FIG. 6A are rotatably inserted into the

holes

501 and 502 of the first shutter frame 321 shown in FIG. 6B . Likewise, the rotating shaft 493 and the rotating shaft 494 of the second shutter 312 are rotatably inserted into the

holes

503 and 504 of the second shutter frame 322, and the rotating shaft 497 and the rotating shaft 498 of the third shutter 313 are rotatably inserted Inserted into the

holes

507 and 508 of the third shutter frame 323 , the rotating shaft 495 and the rotating shaft 496 of the fourth shutter 314 are rotatably inserted into the

holes

505 and 506 of the fourth shutter frame 324 middle.

7A is a perspective view of the damper 30 viewed from the front right side, and FIG. 7B is an enlarged perspective view of the respective gears constituting the damper 30 viewed from the front right side.

Referring to FIG. 7A , the shutter driving part 33 has a plurality of gears, which are located at the central position of the damper 30 and are used to rotate the shutter 31 .

7B , the flapper driving portion 33 has a motor 34 , a motor gear 35 , a driven gear 364 and a driven gear 363 , and a flapper gear 374 and flapper gears 373 and 374 .

The motor gear 35 is rotationally driven by the motor 34 and meshes with the transmission gear 366 . The transmission gear 366 is integrally connected with the driven gear 364 and the driven gear 362 . A flapper gear 374 is arranged on the front side of the driven gear 364 , and the driven gear 364 meshes with the flapper gear 374 . The rotation shaft 491 of the first flapper 311 is inserted into the flapper gear 374 so as to be non-rotatable relative thereto. Therefore, when the motor gear 35 is rotated by the motor 34, this rotational force rotates the shutter gear 374 via the transmission gear 366 and the driven gear 364, thereby rotating the first shutter 311.

In the perspective view of FIG. 8 , the damper 30 is shown in which only the first flap 311 is in an open state and the second flap 312 , the third flap 313 , and the fourth flap 314 are in a closed state.

Referring to FIG. 7B , the gear ratio of the flapper gear 374 is smaller than that of the driven gear 364 . In this way, the flapper gear 374 can be rotated more greatly than the rotation amount of the driven gear 364 . For example, by rotating the driven gear 364 by 80 degrees, the shutter gear 374 can be rotated by 90 degrees. Therefore, when the first flap 311 is in the open state, the first flap 311 can be reliably brought into the vertical state, and the air passage resistance of the third air passage 481 can be reduced.

In addition, the motor gear 35 meshes with the transmission gear 365 . The transmission gear 365 is integrated with the driven gear 363 and the driven gear 361 (see FIG. 9B ). A flapper gear 373 is arranged on the rear side of the driven gear 363 , and the driven gear 363 meshes with the flapper gear 373 . The rotation shaft 493 of the flapper 312 is inserted into the flapper gear 373 in such a manner as to be non-rotatable relative thereto. Here, the shutter gear 373 also has a smaller gear ratio than the driven gear 363 in order to reliably rotate the shutter 312 by 90 degrees in the open state.

9A is a perspective view of the damper 30 viewed from the front left side, and FIG. 9B is an enlarged perspective view of the respective gears constituting the damper 30 viewed from the front left side.

Referring to FIG. 9B , the driven gear 362 is integrated with the above-mentioned transmission gear 366 . Moreover, the flapper gear 372 is arrange|positioned ahead of the driven gear 362, and the driven gear 362 and the flapper gear 372 are arrange|positioned so that meshing may be possible. In addition, the rotation shaft 497 of the flapper 313 is inserted into and connected to the flapper gear 372 in a relatively non-rotatable manner. Here, the gear ratio of the shutter gear 372 is also smaller than that of the driven gear 362, so that the shutter 313 can be rotated 90 degrees reliably in the open state.

The front portion of the transmission gear 365 meshes with the transmission gear 366 . Further, the transmission gear 365 is integrated with the driven gear 361 and the driven gear 363 (refer to FIG. 7B ). A flapper gear 371 is arranged on the rear side of the driven gear 361, and the driven gear 361 and the flapper gear 371 are arranged so as to be able to mesh with each other. The rotation shaft 495 of the flapper 314 is inserted into the flapper gear 371 so as to be non-rotatable relative thereto.

When the motor gear 35 is rotated by the motor 34, the rotational force rotates the shutter gear 371 via the transmission gear 366, the transmission gear 365, and the driven gear 361, whereby the shutter 314 is rotated. Here, the gear ratio of the shutter gear 371 is also smaller than the gear ratio of the driven gear 361 so that the shutter 314 can be reliably rotated by 90 degrees in the open state.

10A is a perspective view of the damper 30 and the first air passage heat insulating member 41 viewed from the upper front side, FIG. 10B is a perspective view of the damper 30 and the first air passage heat insulating member 41 viewed from the lower back side, and FIG. 10C is a top view from the front An enlarged perspective view of the damper 30 viewed from the side.

Referring to FIG. 10A , a substantially plate-shaped insertion portion 521 and an insertion portion 522 are formed at the lower end of the first air passage heat insulating member 41 . Further, between the insertion portion 521 and the insertion portion 522, a substantially rectangular slit 51 is formed when viewed from the front.

The damper drive part 33 of the damper 30 has a casing 38 . The case 38 is formed in a substantially rectangular parallelepiped shape from synthetic resin. Inside the casing 38, gears and the like constituting the above-described shutter drive unit 33 are provided.

Referring to FIG. 10B , the contact portion 49 is provided on the rear side of the slit 51 . The contact part 49 is the lower end surface of the part which partitions the 1st air passage 482 and the 2nd air passage 484, and may be a flat surface, or the shape which reversed the recessed part 40 mentioned later may be sufficient as it.

Referring to FIG. 10C , a recessed portion 40 is formed on the upper surface of the housing 38 . The concave portion 40 is formed so as to extend linearly in the front-rear direction on the upper surface of the housing 38 . In addition, the recessed portion 40 is also formed to extend linearly in the left-right direction on the upper surface of the housing 38 . In other words, the recessed portion 40 is formed in a substantially cross shape on the upper surface of the housing 38 .

The housing 38 of the damper 30 is inserted into the slit 51 shown in FIG. 10B . Further, the upper surface of the housing 38 in which the recessed portion 40 is formed is in contact with the contact portion 49 . Thereby, the space between the upper surface of the casing 38 and the contact portion 49 of the first air passage heat insulating member 41 is sealed, and the first air passage 482 and the second air passage 484 are separated, for example, it is possible to prevent air from passing through the first air passage. 482 intrudes into the second air passage 484 .

Here, instead of the aforementioned concave portion 40 , a rib may be formed on the upper surface of the housing 38 so that the rib abuts against the abutting portion 49 .

Furthermore, referring to FIG. 10C , a gap 532 is formed between the first shutter frame 321 and the second shutter frame 322 . Further, the baffle wall portion 3221 of the first baffle frame 321 faces the gap 532 , and the baffle wall portion 3211 of the second baffle frame 322 faces the gap 532 , that is, the baffle wall portion 3221 and the baffle wall portion 3221 face the gap 532 . The gap 532 is formed between the plate wall portions 3211 at intervals. Further, the baffle wall portion 3211 of the second baffle frame 322 is set higher than the baffle wall portion 3221 of the first baffle frame 321 .

Similarly, the baffle wall portion 3241 of the fourth baffle frame 324 is disposed opposite to the baffle wall portion 3231 of the third baffle frame 323 with the gap 531 interposed therebetween. Further, the baffle wall portion 3241 is provided higher than the baffle wall portion 3231 .

Accordingly, the insertion portion 521 and the insertion portion 522 of the first air passage heat insulating member 41 shown in FIG. 10A can be easily inserted into the

gaps

531 and 532 of the damper 30 . Specifically, when the insertion portion 521 of the first air passage heat insulating member 41 is inserted into the gap 531 of the damper 30, the baffle wall portion 3241 formed higher serves as a guide plate. In addition, since the heights of the baffle wall portion 3241 and the baffle wall portion 3231 are different, a large opening is formed in the upper portion of the gap 531 , and the insertion portion 521 can be easily inserted into the gap 531 .

Similarly, on the right side of the damper 30 shown in FIG. 10C , the baffle wall portion 3211 is provided higher than the baffle wall portion 3221, whereby the first air passage heat insulating member 41 shown in FIG. 10A can be The insertion portion 522 is easily inserted into the gap 532 .

11A is a perspective view of the damper 30 and the first air passage heat insulating member 41 viewed from the upper front side, FIG. 11B is a perspective view of the damper 30 and the first air passage heat insulating member 41 viewed from the lower back side, and FIG. 11C is a top view of the front An enlarged perspective view of the damper 30 viewed from the side.

11C, the second shutter frame 322, the third shutter frame 323, and the fourth shutter frame 324 are integrally formed of synthetic resin. Further, a substantially horizontal flat surface 62 is formed between the third baffle frame 323 and the fourth baffle frame 324 . In this way, the contact surface 64 can be brought into close contact with the flat surface 62 of the damper 30 , and the fourth air passage 483 opened and closed by the third damper 313 and the second air passage opened and closed by the fourth damper 314 can be brought into close contact with each other. 484, and the contact surface 64 is the lower surface of the damper 30 shown in FIG. 11B.

In addition, referring to FIG. 11C , the outer side surface 63 of the baffle 31 is a substantially flat flat surface. Specifically, the outer side surfaces 63 are, for example, the right side and front side of the second baffle frame 322 , the right and front sides of the housing 38 , the front and left sides of the third baffle frame 323 , and the fourth gear Left side of plate frame 324 . In this way, the outer surface 63 of the damper 30 can be brought into contact with the inner surface 61 formed at the lower end of the first air passage heat insulating member 41 shown in FIG. 11B , and the space between each air passage and the damper 30 can be sealed. .

12 is a cutaway perspective view of each baffle plate and each air passage.

As described above, the damper 30 has the first baffle 311 and the second baffle 312 , and the cavity 60 is provided between the first baffle 311 and the second baffle 312 . The cavity portion 60 is an inner space formed of a synthetic resin having a cap-shaped cross section. As described above, the first baffle 311 opens and closes the third air passage 481 , and the second baffle 312 opens and closes the first air passage 482 .

FIG. 13A is a cross-sectional view showing a case where only the first shutter 311 is in an open state, and FIG. 13B is a cross-sectional view showing a case in which only the second shutter 312 is in an open state.

Referring to FIG. 13A , when the first shutter 311 is rotated about 90 degrees around the rotation axis 492 to be in an open state, the low-temperature air cooled by the evaporator 162 is blown out through the third air passage 481 and the opening 57 Go to crisper 15. At this time, due to the presence of the cavity portion 60 , the third air passage 481 and the first air passage 482 are insulated from each other, and the rotation shaft 494 of the second damper 312 is prevented from freezing.

Referring to FIG. 13B , the shutter 312 can be rotated about 90 degrees around the rotation shaft 494 to be in an open state, and air can be blown into the refrigerator compartment 12 via the first air passage 482 . At this time, the first shutter 311 is in a closed state by rotating about 90 degrees in the opposite direction to the above-described rotation center about the rotation shaft 492 . At this time, the first air passage 482 and the third air passage 481 are thermally insulated by the cavity portion 60, whereby the rotation shaft 492 can be prevented from freezing.

According to the present embodiment described above, the following main effects can be obtained.

Referring to FIG. 5A , it is possible to provide a refrigerator 10 including a damper 30 having a compact outer shape and capable of reducing air path resistance. That is, by arranging the plurality of baffles 31 in the front-rear direction and the left-right direction, the air passage resistance in the damper 30 can be reduced, and further, the space between the left air passage 48 and the right air passage 48 can be reduced. The air volume is poor. Therefore, each storage compartment can be efficiently cooled to a predetermined temperature.

In addition, referring to FIG. 5A , by arranging the shutter driving parts 33 between the shutters 31 , one shutter driving part 33 can efficiently drive the opening or closing operations of all the shutters 31 .

9B , by making the gear ratio of the flapper gear 371 smaller than the gear ratio of the driven gear, it is possible to obtain a large amount of rotation of the flapper gear 371 by small rotation of the driven gear, so that it can be reliably performed. The opening and closing of the shutter 31 works.

In addition, referring to FIG. 10C , by abutting the rib or recess 40 provided on the outer surface of the casing 38 with the first air passage heat insulating member 41, the gap between the rib and the casing 38 of the damper driving part 33 can be sealed, Therefore, it is possible to prevent air from leaking from the gap between the two.

In addition, referring to FIG. 10C , in the gap between the first baffle frame 321 and the second baffle frame 322 , the baffle wall portion 3221 of the first baffle frame 321 and the baffle of the second baffle frame 322 One of the wall portions 3211 is set higher than the other, whereby the lower end of the first air passage heat insulating member 41 can be easily inserted into the gap between the first damper frame 321 and the second damper frame 322 middle.

11C , the third baffle frame 323 and the fourth baffle frame 324 are integrally formed, whereby the air passages 48 in which the respective baffles 31 are provided can be reliably separated.

11C , the outer side surfaces 63 of the second to fourth barrier frames 322 to 324 are flat surfaces, so that the outer side surfaces of the first barrier frame 321 and the second barrier frame 322 can be 63 is in contact with the first air passage heat insulating member 41 to improve the airtightness of the air passage 48 .

13A , the shutters 31 can be insulated from each other by the cavity portion 60, and when the shutters 311 are in the open state, the drive structure of the adjacent shutters 312 can be prevented from freezing.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention.

Claims

A refrigerator, characterized in that, comprising:

a plurality of air passages for the flow of air blown into the storage compartment; and

dampers, which respectively open or close the air path,

The damper has a damper and a damper driving part, the damper is provided corresponding to each of the air passages, and the damper driving part drives the opening or closing of the damper,

The baffles are provided in plural in the front-rear direction and in the left-right direction.
The refrigerator according to claim 1, wherein the shutter driving part is provided between the shutters adjacent to each other in the left-right direction.
The refrigerator according to claim 1 or 2, wherein the shutter driving part has a casing, and a rib or a recess is provided on the outer surface of the casing, so that the air passage heat insulating member forming the air passage is connected to the The rib or the concave portion abuts.
The refrigerator according to claim 3, wherein the baffle has a first baffle and a second baffle adjacent to the first baffle, and a first baffle is provided around the first baffle. a baffle frame, a second baffle frame is arranged around the second baffle, and on both sides of the gap between the first baffle frame and the second baffle frame, the first baffle One of the plate frame and the second baffle frame is set higher than the other.
The refrigerator according to claim 4, characterized in that a cavity is provided between the baffle plates adjacent to each other in the left-right direction.
The refrigerator according to claim 5, wherein the cavity portion is an inner space formed of a synthetic resin having a cap-shaped cross section.
The refrigerator according to claim 4, wherein the shutter driving part has a plurality of gears, which are located at a central position of the damper to rotate the shutter.
The refrigerator according to claim 7, wherein the first and second baffles are both provided with rotating shafts located at their lateral ends, and the rotating shafts are connected to the The flapper gear of the flapper drive unit.
The refrigerator according to claim 8, characterized in that, the shutter driving part has a motor, a motor gear rotated by the motor, a transmission gear meshed with the motor gear, and integrated with the transmission gear The driven gear and the baffle gear meshing with the driven gear, the rotating shaft of the first baffle is inserted into the baffle gear in a non-relatively rotatable manner, and the gear ratio of the baffle gear is smaller than that of the driven gear gear ratio.
The refrigerator according to claim 4, wherein the damper is assembled at the lower end of the air duct heat insulating member, and the air duct heat insulating member comprises a first air duct heat insulating member and a The second air passage heat insulating member at the lower end portion of the front side of the air passage heat insulating member.