CN107218758B

CN107218758B - Refrigerator with a door

Info

Publication number: CN107218758B
Application number: CN201710517959.6A
Authority: CN
Inventors: 李登强; 费斌; 尚亚洲; 程学丽
Original assignee: Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Co Ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2019-12-06
Anticipated expiration: 2037-06-29
Also published as: CN107218758A; WO2019001491A1

Abstract

the invention provides a refrigerator. The method comprises the following steps: a box body; the air outlet device is provided with a peripheral wall part, a first axial end part and an adjusting part; a plurality of first air outlets are formed in the peripheral wall part; a plurality of second air outlets are formed in the first axial end part; the adjusting part is configured to adjust the air outlet area of each of the first air outlets; the air duct assembly is arranged on the box body; the air duct component is internally provided with a containing cavity for containing the air outlet device, and a first air duct layer and a second air duct layer which are sequentially arranged along the longitudinal direction of the refrigerator; the first air duct layer comprises a plurality of first air ducts, and the air flow flowing out of the cooling space flows to the at least one storage space through the plurality of first air outlets of the air outlet device and the plurality of first air ducts; the second air duct layer comprises at least one second air duct, and the air flow flowing out of the cooling space flows to the at least one storage space through the plurality of second air outlets of the air outlet device and the at least one second air duct. This refrigerator structural design is reasonable, can effectively supply air.

Description

Refrigerator with a door

Technical Field

the invention relates to the field of refrigeration and freezing storage, in particular to a refrigerator.

Background

In recent years, with the improvement of living standard and the enhancement of environmental consciousness, the demand for refrigerators has shifted from the satisfaction of low-temperature refrigeration to the preservation of food. Therefore, the air-cooled refrigerator is gradually favored by people. For air-cooled refrigerators, the freshness-retaining properties of food are to a large extent dependent on the circulation of the air flow in the storage compartment of the air-cooled refrigerator and the temperature differences between the various parts of the refrigerator. The air flow in the refrigerator is reasonable in circulation, and the smaller the temperature difference is, the better the preservation performance of the refrigerator is. The key component determining whether the air circulation of the refrigerator is reasonable is the air duct, which determines how to convey air to a reasonable position in the storage compartment. In the air-cooled refrigerator air path design on the market at present, most air-cooled refrigerators are provided with evaporators arranged in a single accommodating chamber, and the accommodating chamber of the evaporators is communicated with each storage space by utilizing a complex air duct system, so that the existing air duct system is complex in design and large in structure, and air cannot be conveyed to an expected position due to the limitation of the structure of the existing air duct system.

disclosure of Invention

The invention aims to overcome at least one defect of the existing air-cooled refrigerator, and provides a novel refrigerator which is provided with a special air duct system, can ensure that the structural design of the refrigerator is reasonable, and can effectively supply air.

In particular, the present invention provides a refrigerator, comprising:

The refrigerator comprises a box body, a storage box and a cooling device, wherein the box body is internally provided with a cooling space and at least one storage space;

The air outlet device is provided with a peripheral wall part, a first axial end part arranged at one end of the peripheral wall part and an adjusting part rotatably arranged in the peripheral wall part; a plurality of first air outlets are formed in the peripheral wall part; a plurality of second air outlets are formed in the first axial end part; the adjusting part is configured to completely shield, partially shield or completely expose each first air outlet at different movement positions, so as to adjust the air outlet area of each first air outlet; and

the air duct assembly is arranged on the box body; the air duct assembly is internally provided with a containing cavity for containing the air outlet device, and a first air duct layer and a second air duct layer which are sequentially arranged along the longitudinal direction of the refrigerator;

the first air duct layer comprises a plurality of first air ducts, and the air flow flowing out of the cooling space flows to the at least one storage space through the plurality of first air outlets of the air outlet device and the plurality of first air ducts;

the second air duct layer comprises at least one second air duct, and the air flow flowing out of the cooling space flows to the at least one storage space through the plurality of second air outlets of the air outlet device and the at least one second air duct.

optionally, the accommodating cavity is located in the middle or upper part of the air duct assembly;

the plurality of first air outlets comprise an air outlet I, an air outlet II and an air outlet III, the air outlet I is arranged on the upper side of the peripheral wall part, and the air outlet II and the air outlet III are arranged on two sides of the air outlet I;

The plurality of first air channels comprise a first air channel, a second air channel, a third air channel, a fourth air channel, a fifth air channel and a sixth air channel;

the first air duct extends from the air outlet to one lateral side of the upper portion of the air duct assembly, and the second air duct extends from the air outlet to the other lateral side of the upper portion of the air duct assembly after extending upwards from the air outlet;

The air duct III extends from the air outlet to one transverse side of the upper part of the air duct assembly and then extends downwards by bypassing the tail end of the air duct I; the air duct IV extends from the air outlet to the other transverse side of the upper part of the air duct assembly and then extends downwards by bypassing the tail end of the air duct II;

The air duct five and the air duct six both extend downwards from the air outlet three, and the tail ends of the air duct five and the air duct six are positioned at the two transverse sides of the lower part of the air duct assembly; or the first air duct layer further comprises a main air duct extending downwards from the air outlet three, and the air duct five and the air duct six extend from the tail end of the main air duct to the two transverse sides of the lower portion of the air duct assembly respectively.

optionally, the number of the second air duct is one, the second air duct extends from bottom to top, and the air supply outlet of the second air duct is located on the upper end face of the air duct assembly.

optionally, the air duct assembly further has: each first air supply outlet is arranged at the tail end of one corresponding first air channel, and the opening of each first air supply outlet faces forwards; and

and each second air supply outlet is arranged between the starting end and the tail end of one corresponding first air channel, and the opening of the second air supply outlet faces forwards.

Optionally, the air duct assembly includes a rear casing portion, a first front cover mounted on a front side of the rear casing portion, and a second front cover mounted on a front side of the first front cover;

the first air duct layer and the accommodating cavity are positioned on the rear side of the first front cover;

The second air duct layer is located on the front side of the first front cover.

Optionally, the rear housing portion comprises:

the rear shell is provided with a rear wall, a containing cavity wall extending forwards from the upper part of the rear wall, and a first air duct wall extending forwards from the rear wall; and

The air duct bridging piece is arranged at the upper part of the rear shell and is provided with an air duct groove with a forward opening; and is

The rear wall, the containment chamber wall and the air duct bridge and the first front cover together define the containment chamber;

The first front cover covers the air duct groove, so that the air duct bridge piece, the rear wall, the first air duct wall and the first front cover jointly define a second air duct;

Said rear wall, said rear side of said air duct bridge, said first air duct wall and said first front cover collectively defining said air duct three and said air duct four;

the rear wall, the first air duct wall and the first front cover jointly define the first air duct, the fifth air duct and the sixth air duct.

Optionally, the first front cover has a cover plate and a second duct wall extending forwardly from the cover plate;

the cover plate, the second air duct wall and the second front cover together define the at least one second air duct; and is

The cover plate is provided with a plurality of communicating holes, and each second air outlet is aligned with one communicating hole so that each second air outlet is communicated with the at least one second air duct through one communicating hole.

optionally, the first front cover is provided with a plurality of the first air supply outlets and at least one of the second air supply outlets.

optionally, the at least one storage space comprises an upper tray space, an upper drawer space, a lower tray space and a lower drawer space which are sequentially arranged from top to bottom, and a refrigerating space arranged above the upper tray space; and is

The at least one second air duct is communicated with the refrigerating space;

The first air duct and the second air duct are respectively communicated with the upper drawer space through a corresponding first air supply outlet;

The third air duct and the fourth air duct are respectively communicated with the lower tray space through a corresponding first air supply outlet;

the air duct five and the air duct six are respectively communicated with the lower drawer space through a corresponding first air supply outlet;

The third air duct and the fourth air duct are respectively communicated with the upper layer tray space through a corresponding second air supply outlet.

optionally, the air outlet device further includes:

The second axial end part is arranged at the other end of the peripheral wall part, and an air inlet is formed in the second axial end part;

a fan configured to cause airflow from the air inlet into the peripheral wall portion;

The cooling space is positioned at the rear side of the air duct assembly, and the air inlet faces the cooling space;

The fan is a centrifugal fan;

the air duct assembly further comprises a return air duct portion arranged below the first air duct layer and the second air duct layer, and the return air duct portion is provided with one or more return air ducts.

The air duct assembly in the refrigerator provided by the invention is provided with the two air ducts and the air outlet device, so that air flow can enter the storage space of the refrigerator through the two air ducts, particularly conveniently enters a plurality of positions of the storage space, and is particularly convenient for designing air supply positions, and air can be supplied at reasonable positions. And the runner of each air channel is shorter, so that the air resistance can be obviously reduced, the air supply smoothness is improved, the optimal storage environment can be provided for food, the nutrition loss of the food is reduced, the power consumption of the refrigerator can be reduced, the energy is saved, and the noise is reduced.

Particularly, the air outlet device is provided with a regulating part which can regulate the air flow of part or all of the air supply outlets and further regulate the cold quantity sent into the storage space, thereby simplifying the structure, for example, omitting the structures such as a fan, a plurality of air doors and the like of the existing air-cooled refrigerator. And the air supply volume of the storage space can be uniformly controlled, the air supply volume can be reasonably distributed, and the refrigeration effect and the fresh-keeping effect of the refrigerator are improved. The design of the fan in the air outlet device can further make the refrigerator compact in structure and effectively enlarge the volume of the storage space.

the above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a refrigerator according to one embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an air outlet device installed in an air duct assembly in the refrigerator shown in FIG. 1;

FIG. 3 is a schematic exploded view of the structure shown in FIG. 2;

FIG. 4 is a schematic structural view of the air outlet device mounted on the bottom housing of the air duct assembly shown in FIG. 3;

fig. 5 is a schematic structural view of the air outlet device shown in fig. 3;

Fig. 6 is a schematic exploded view of the wind outlet device shown in fig. 5.

Detailed Description

Fig. 1 is a schematic structural view of a refrigerator according to one embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a refrigerator. The refrigerator may have a cabinet 100, an air outlet device 300, an air duct assembly 200, and a refrigerating system. The cabinet 100 may have a cooling space and at least one storage space therein. The refrigeration system may optionally be a compression refrigeration system having an evaporator disposed within the cooled space. As is well known to those skilled in the art, the refrigeration system may be other types of refrigeration systems, such as a semiconductor refrigeration system, and a cold-side cold spreader of the semiconductor refrigeration system may be disposed in the cooling space.

The air duct assembly 200 may be mounted to the cabinet 100. The air duct assembly 200 has a cavity for accommodating the air outlet device 300 therein, and a first air duct layer and a second air duct layer sequentially arranged along a longitudinal direction of the refrigerator, as shown in fig. 2, 3 and 4. The first air duct layer may include a plurality of first air ducts. The second air duct layer may include a second air duct 250. The air outlet device 300 is installed in the accommodating cavity of the air duct assembly 200, as shown in fig. 3. The air outlet device 300 may have a peripheral wall 310 and a first axial end 320 disposed at one end of the peripheral wall 310, as shown in fig. 5 and 6. The peripheral wall portion 310 may extend in the longitudinal direction of the case 100, that is, the axial direction of the peripheral wall portion 310 extends in the longitudinal direction of the case 100. The peripheral wall 310 is provided with a plurality of first outlets 311, and the first axial end 320 is provided with at least one second outlet 321. The air flow flowing out of the cooling space flows to the at least one storage space through the plurality of first air outlets and the plurality of first air ducts of the air outlet device. The airflow flowing out of the cooling space flows to the at least one storage space through the at least one second air outlet of the air outlet device and the second air duct 250. Specifically, the air outlet device 300 further includes an adjusting portion 350, which is rotatably disposed in the peripheral wall portion 310 relative to the peripheral wall portion 310, so as to completely shield, partially shield or completely expose each of the first air outlets 311 at different moving positions, thereby adjusting the air outlet area of each of the plurality of first air outlets 311. The setting of regulating part 350 can carry out unified control to the air supply volume in storing space, but rational distribution air supply volume improves the refrigeration effect of refrigerator to and fresh-keeping effect.

for example, in some embodiments of the present invention, the at least one storage space may include a refrigerating space 110 at an upper portion and a freezing space 130 at a lower portion, and the freezing space 130 may be divided into four spaces arranged in sequence. In some alternative embodiments, the four spaces arranged in sequence from top to bottom are an upper tray space, an upper drawer space, a lower tray space and a lower drawer space in sequence. That is, at least one storing space includes upper tray space, upper drawer space, lower floor's tray space and lower floor's drawer space that set gradually from the top down to set up the cold-stored space in upper tray space top. A tray can be arranged in the upper tray space and the lower tray space; a drawer can be arranged in the upper drawer space and the lower drawer space; a temperature changing space 120 can be arranged between the refrigerating space 110 and the freezing space 130 and is separated by a partition; a clapboard is also arranged between the upper drawer space and the lower tray space. In some alternative embodiments, the four spaces arranged one above the other may be separated only by a partition.

further, in some embodiments, the plurality of first ducts of the first duct layer may be in communication with the refrigerated space at a plurality of locations of the refrigerated space, and the at least one second duct 250 of the second duct layer may be in communication with the refrigerated space. In other embodiments, a portion of the first air ducts of the first air duct layer may be in communication with the refrigerated space at a plurality of locations in the refrigerated space, at least one of the second air ducts 250 may be in communication with the refrigerated space at least one location in the refrigerated space, and the remaining first air ducts of the first air duct layer may be in communication with the refrigerated space. The special structure of the air outlet device 300 and the air duct assembly 200 can make the air flow enter the storage space of the refrigerator through the two air ducts, especially conveniently enter a plurality of positions of the storage space, and the design of the air supply position is particularly convenient, so that the reasonable position can be supplied with air. The first air outlet 311 and the second air outlet 321 of the air outlet device 300 are designed in positions, so that air can be supplied to the two air ducts conveniently, the design is reasonable, and the structure is compact. The adjusting part 350 can adjust the airflow of the first air supply ports 311, and further adjust the cooling capacity sent into the storage space, so that the structure is simplified, and for example, the structures such as a plurality of air doors of the existing air-cooled refrigerator can be omitted. Further, each of the first air outlets 311 of some or all of the first air outlets 311 is communicated with two first air ducts, so that the airflow flowing out of the first air outlet 311 flows to two lateral sides of the rear portion of a storage space.

in some embodiments of the present invention, the receiving cavity may be in the middle or upper portion of the air chute assembly 200. The plurality of first air outlets 311 include a first air outlet, a second air outlet and a third air outlet. The first air outlet is disposed on the upper side of the peripheral wall portion 310, and the second air outlet and the third air outlet are disposed on two sides of the first air outlet. The plurality of first air ducts include a first air duct 241, a second air duct 242, a third air duct 243, a fourth air duct 244, a fifth air duct 246 and a sixth air duct 247.

the first air duct 241 may extend from the air outlet to one lateral side of the upper portion of the air duct assembly 200, and the second air duct 242 extends from the upper side of the receiving cavity to the other lateral side of the upper portion of the air duct assembly 200 after extending upward from the air outlet. The air duct three 243 extends from the air outlet to one lateral side of the upper part of the air duct assembly 200 and then extends downwards around the tail end of the air duct one 241; the fourth air duct 244 extends from the air outlet to the other lateral side of the upper portion of the air duct assembly 200 and then extends downward around the end of the second air duct 242. Part of the duct section of duct three 243 and/or duct four 244 may be located at the rear side of duct two 242, so as to achieve air-path bridging without causing air-path interference. The first air duct layer further includes a main air duct 245 extending downward from the air outlet three, and an air duct five 246 and an air duct six 247 respectively extend from the end of the main air duct 245 to both lateral sides of the lower portion of the air duct assembly 200. In some alternative embodiments, duct five 246 and duct six 247 each extend downwardly from outlet three, and the ends of duct five 246 and duct six 247 are located on the lateral sides of the lower portion of duct assembly 200.

in some embodiments of the present invention, the front side of the air chute assembly 200 is preferably a storage space. The air duct assembly 200 further has a first air supply outlet 223 provided at an end of each first air duct and opening forward. The first air supply opening 223 is particularly convenient for the refrigerator to supply air to the storage space at the front side of the air duct assembly 200. Further, in order to further improve the air supply effect, the air duct assembly 200 further has at least one second air supply outlet 224, and each second air supply outlet 224 is disposed between the beginning and the end of a corresponding first air duct, and has a forward opening. That is, each of the second blowing ports 224 may communicate with any one of the positions between the beginning and the end of a corresponding one of the first air paths, and some of the first air paths may communicate with the storage compartment not only at the end thereof but also at other positions thereof.

In some embodiments of the invention, the first air duct layer may be on the rear side of the second air duct layer. The second air passage is one, and the second air passage 250 extends upward from below. The initial end of the second air duct 250 is disposed at the front side of the first axial end 320 and is communicated with the plurality of second air outlets 321. For example, the number of the second outlet ports 321 may be three. The supply air outlet of the second air duct 250 is located on the upper end surface of the air duct assembly 200, i.e., the second air duct 250 extends upward from the front of the first axial end 320.

preferably, the front of the air duct assembly 200 may be a refrigerated space. At least one second air duct is communicated with the refrigerating space. The first air duct 241 and the second air duct 242 are respectively communicated with the upper drawer space through a corresponding first air supply outlet 223. The third air duct 243 and the fourth air duct 244 are respectively communicated with the lower tray space through a corresponding first air supply outlet 223. The air duct five 246 and the air duct six 247 are respectively communicated with the lower drawer space through a corresponding first air supply opening 223. Further, the number of the second blowing openings 224 is two, and the third air duct 243 and the fourth air duct 244 are respectively communicated with the upper tray space through a corresponding second blowing opening 224.

In some embodiments of the present invention, as shown in fig. 3 and 4, the duct assembly 200 may include a rear case portion 210, a first front cover 220 mounted to a front side of the rear case portion 210, and a second front cover 230 mounted to a front side of the first front cover 220. The first air duct layer and the receiving cavity are located at the rear side of the first front cover 220. The second air duct layer is positioned at the front side of the first front cover 220. The first front cover 220 can be connected to the rear housing portion 210 in a snap-fit manner, and the second front cover 230 can be fixed to the first front cover 220 and the rear housing portion 210 by a fixing device such as a screw. The rear housing portion 210 may be snap-fitted to the case.

for example, in some embodiments of the present invention, as shown in fig. 3 and 4, the rear housing portion 210 includes a rear housing 211 and a wind tunnel bridge 212. The rear housing 211 may have a rear wall 2111, a containment chamber wall 2112 extending forwardly from a middle or upper portion of the rear wall 2111, and a first air duct wall 2113 extending forwardly from the rear wall 2111. The air duct bridge 212 may be installed at an upper portion of the rear case 211, and particularly, may be located at an upper side of the receiving chamber, and may have an air duct groove 2121 opened frontward. The rear wall 2111, the containment chamber wall 2112 and the wind tunnel bridge 212 and the first front cover 220 together define a containment chamber. The first front cover 220 covers the air duct slot 2121 such that the air duct bridge 212, together with the rear wall 2111, the first air duct wall 2113, and the first front cover 220, define an air duct two 242. The rear wall 2111, the rear side of the tunnel bridge 212, the first tunnel wall 2113, and the first front cover 220 collectively define a tunnel three 243 and a tunnel four 244. The rear wall 2111, the first air channel wall 2113, and the first front cover 220 collectively define an air channel one 241, an air channel five 246, and an air channel six 247. In some alternative embodiments of the present invention, the rear housing 211 and the air duct bridge 212 may be integrally injection molded. However, when the rear case 211 and the air duct bridge 212 are two structural members, the installation of the air duct assembly 200 and the air outlet device 300 is facilitated.

In some embodiments of the present invention, the first front cover 220 has a cover plate 221 and a second air duct wall 222 extending forward from the cover plate 221. The cover plate 221, the second air duct wall 222, and the second front cover 230 collectively define a second air duct 250. The cover 221 is provided with a plurality of communication holes 2211, and each second air outlet 321 is aligned with one communication hole 2211, so that each second air outlet 321 is communicated with the second air duct 250 through one communication hole 2211. Further, the first front cover 220 is provided with a plurality of first blowing ports 223 and at least one second blowing port 224. The defined surface of the end of the second air duct 250 on the cover 221 may be slightly inclined backward, and the inclined angle may be 3 ° to 20 °, for example, 5 °, 8 °, and the like.

in some further embodiments of the present invention, at least an end portion of the first duct communicating with each of the first supply ports 223 is gradually enlarged in a flow direction of the air current. Each of the first supply ports 223 may be an elongated supply port extending in the horizontal longitudinal direction. Each first air supply opening 223 may be provided with a partition plate therein, so that the air supply opening is a plurality of small air supply holes. Further, the lower end of the rear case 211 has a return air duct portion 213 extending forward, and the return air duct portion 213 has one or more return air ducts 2131. The return air duct portion 213 extends first forward and then downward to conform to the compressor compartment at the lower portion of the cabinet 100.

in some embodiments of the present invention, as shown in fig. 5 and fig. 6, the air outlet device 300 further includes a second axial end 330 disposed at the other end of the peripheral wall 310, and the second axial end 330 is provided with an air inlet. Preferably, the cooling space is at the rear side of the air duct assembly 200. The opening of the accommodating space faces the rear side, and the air inlet faces the cooling space. Further preferably, the rear wall 2111 of the rear housing 211 may include a middle lower wall portion, an upper wall portion, and a connecting wall portion. The middle lower wall portion is located on the front side of the upper wall portion, and the connecting wall portion connects the upper end of the middle lower wall portion and the lower end of the upper wall portion. The arrangement can provide a larger placing space for the placement of the evaporator and the like, is convenient for the installation of the air outlet device 300, and has a particularly reasonable design.

In some embodiments of the present invention, as shown in fig. 5 and 6, the air outlet device 300 further includes a blower 360 configured to promote the airflow from the air inlet into the peripheral wall portion 310. The fan 360 is preferably a centrifugal fan. The design of the fan 360 in the air outlet device 300 can further make the refrigerator compact in structure, and the size of the storage space can be effectively enlarged.

in some embodiments of the present invention, the peripheral wall portion 310 is preferably cylindrical, and may be integrally formed with one of the first axial end 320 and the second axial end 330, and the other may be engaged with the peripheral wall portion 310. The integral structure of the peripheral wall portion 310, the first axial end 320 and the second axial end 330 may also be referred to as a housing of the air outlet device 300. The plurality of second air outlets 321 are sequentially arranged, preferably uniformly sequentially arranged, in the circumferential direction of the first axial end 320. Of course, the plurality of second air outlets 321 may also be unevenly disposed along the circumferential direction of the first axial end 320. Further, the first axial end 320 includes a central portion and a peripheral portion located outside the central portion, and each of the second air outlets 321 is disposed on the peripheral portion for facilitating air outlet. The fan 360 may be installed at the central portion. Preferably, each of the second air outlets 321 may have an annular segment shape extending in a circumferential direction of the first axial end 320.

in some embodiments of the present invention, one first air outlet 311 is disposed on the peripheral wall section of the peripheral wall portion 310 between each two adjacent second air outlets 321. The arrangement can fully utilize the airflow entering the peripheral wall 310, ensure the airflow entering the second outlet 321, ensure smooth air outlet, prevent the airflow entering the first outlet 311 and the second outlet 321 from generating serious interference, and prevent adverse phenomena such as loud noise and the like.

in order to make each second outlet 321 perform axial air outlet as much as possible, i.e. each second outlet 321 is configured to axially outlet air, the peripheral portion may be configured to include a flat plate portion and at least one guide portion 322. The flat plate portion is provided with at least one second air outlet 321. Further, in some embodiments, each guide 322 extends obliquely from an edge of one of the second air outlets 321 adjacent to the peripheral wall portion 310, inwardly of the first axial end 320 and toward the axis of the peripheral wall portion 310. The guide 322 may have a plate shape and may also be referred to as a guide plate. Further, both ends of each guide portion 322 may also be provided with guide shielding plates. In other embodiments, each guide portion 322 extends obliquely from an edge of one of the second air outlets 321 away from the peripheral wall portion 310 to an outside of the first axial end portion 320 and in a direction away from the axis of the peripheral wall portion 310. The guide 322 may have a plate shape and may also be referred to as a guide plate. Further, both ends of each guide portion 322 may also be provided with guide shielding plates. The inclination angle of the guide portion 322 may be 30 ° to 60 °, preferably 40 °, 43 °, 45 °, 47 °, 50 °, or the like. The central portion may be flat. In some alternative embodiments, the guide portion 322 may also be only a guide surface that guides the flow of the air stream to simplify the structure of the first axial end 320 or to facilitate the design of the first axial end 320.

In some embodiments of the present invention, the regulating portion 350 may include one or more shielding portions 351 spaced apart in a circumferential direction of the first axial end portion 320, and at least one flow portion 352. The shielding portions 351 and the flow-through portions 352 are arranged in sequence in the circumferential direction of the first axial end 320, and one or more shielding portions 351 and at least one flow-through portion 352 enclose a cylindrical structure. Furthermore, the adjusting portion 350 is disposed inside the peripheral wall portion 310, and when the adjusting portion is rotated to different rotation positions, the one or more shielding portions 351 completely shield, partially shield or completely expose each first air outlet 311, so that the airflow enters the partially shielded or completely exposed first air outlet 311 through the at least one circulating portion 352.

In particular, the shielding portions 351 may be shielding sheets, and the space, gap or hole between every two adjacent shielding sheets may be the flow-through portion 352, in particular, when there is only one shielding portion 351, then there is only one corresponding flow-through portion 352. For example, the adjustment portion 350 may include a base portion, a shade sheet disposed on the base portion. For another example, the adjusting portion 350 may include a cylinder, and a plurality of flow portions 352 are formed on the cylinder. Both ends of the cylindrical member may be provided with a base portion to improve strength. Further alternatively, the base may be adapted to be rotatably mounted to either the first axial end 320 or the second axial end 330. For example, an annular groove may be provided on the inner surface of the first axial end 320 or the second axial end 330, and an annular protrusion corresponding to the annular groove may be provided on the base to be inserted into the annular groove for rotation. Still alternatively, the base portion may be rotatably mounted to one end of the peripheral wall portion 310, and when the peripheral wall portion 310 is integrally formed with the first axial end portion 320, the base portion may be rotatably mounted to one end of the peripheral wall portion 310 near the second axial end portion 330.

in some embodiments of the present invention, the air outlet device 300 may further include a motor 370 and a transmission mechanism. The motor 370 may be disposed radially outward of the peripheral wall portion 310. The transmission mechanism is configured to transmit the rotational motion output by the motor 370 to the adjustment part 350. For example, the transmission mechanism may preferably be a gear transmission mechanism, a gear ring 380 is disposed on the base of the adjusting portion 350 (the gear ring 380 may be integrally formed with the base), and a gear may be mounted on the output end of the motor 370, and the gear is engaged with the gear ring 380, so that the motor 370 can drive the gear ring 380 to rotate, and then the adjusting portion 350 to rotate. Further, a motor accommodating part may be provided outside the peripheral wall part 310 to accommodate the motor 370.

In some specific embodiments of the present invention, the second outlet, the first outlet and the third outlet are sequentially spaced along the circumferential direction of the first axial end 320 and may be spaced along the counterclockwise direction (based on the line of sight of the observer looking from the first axial end 320 to the second axial end 330, i.e. the line of sight viewed from the front-back direction). And, the distance between the second air outlet and the other two first air outlets 311 can be the length of one first air outlet 311. In the adjustment portion 350, the number of the blocking portion 351 and the flow portion 352 is three. The three shielding portions 351 are a first shielding portion, a second shielding portion, and a third shielding portion, respectively. The three flow portions 352 are a first flow portion, a second flow portion, and a third flow portion, respectively. The blocking portion 351 and the flow portion 352 are sequentially provided at intervals in the circumferential direction of the first axial end 320 and in the counterclockwise direction. The first and second shielding portions are each configured to allow it to completely shield an area of the one-size first air outlet 311. The third shielding portion is configured to allow it to completely shield at least the area of the two sizes of the first air outlets 311, for example, the third shielding portion can shield the area of the two sizes of the first air outlets 311. The flow portion between the first shielding portion and the second shielding portion is a first flow portion, and is configured to completely expose an area of the first outlet 311 of one size. The flow portion between the second shielding portion and the third shielding portion is a second flow portion, and is configured to completely expose an area of the first air outlet 311 of one size. The flow part between the third shielding part and the first shielding part is a third flow part. During operation, the adjusting portion 350 rotates to open different first outlets 311, for example, when the first shielding portion shields the first outlet, the second outlet and the third outlet may be opened; for another example, when the second shielding portion shields the air outlet, both the air outlet two and the air outlet three can be in a closed state.

in some alternative embodiments of the present invention, the distance between the first air outlet and the other two first air outlets 311 may be 1/7 to 1/10 of the length of one first air outlet 311. In the adjustment portion 350, the number of the blocking portion 351 and the flow portion 352 is two. The two shielding portions 351 are a first shielding portion and a second shielding portion, respectively. The two flow portions 352 are a first flow portion and a second flow portion, respectively. The blocking portion 351 and the flow portion 352 may be sequentially provided at intervals in the circumferential direction of the first axial end 320 and in the clockwise direction. The first shielding portion is configured to allow it to completely shield one first air outlet 311. The second shielding portion is configured to allow it to completely shield at least two first air outlets 311, for example, the second shielding portion can shield three first air outlets 311 and a connecting section of the peripheral wall portion 310 between every two first air outlets 311. The first circulating portion is configured to completely expose one first outlet 311. The second flow-through portion is configured to completely expose the three first air outlets 311. During operation, the adjusting portion 350 rotates to open different first outlets 311, for example, when the first shielding portion shields the first outlet, the second outlet and the third outlet may be opened; for another example, when the first circulation portion communicates with the first air outlet, both the second air outlet and the third air outlet can be in a closed state.

in some embodiments of the present invention, the sizes of any two first outlets 311 of the plurality of first outlets 311 may be equal or different. The sizes of any two second outlets 321 in the plurality of second outlets 321 may be equal or different.

thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. a refrigerator, characterized by comprising:

the first air duct layer comprises a plurality of first air ducts, and the air flow flowing out of the cooling space flows to the at least one storage space through the plurality of first air outlets of the air outlet device and the plurality of first air ducts; the second air duct layer comprises at least one second air duct, and the air flow flowing out of the cooling space flows to the at least one storage space through the plurality of second air outlets of the air outlet device and the at least one second air duct.

2. the refrigerator according to claim 1,

The accommodating cavity is positioned in the middle or the upper part of the air duct assembly;

3. the refrigerator according to claim 1 or 2,

The second air duct is one, the second air duct extends from bottom to top, and an air supply outlet of the second air duct is located on the upper end face of the air duct assembly.

4. the refrigerator of claim 2, wherein the air duct assembly further has:

Each first air supply outlet is arranged at the tail end of one corresponding first air channel, and the opening of each first air supply outlet faces forwards; and

5. the refrigerator according to claim 4,

The air duct assembly comprises a rear shell, a first front cover and a second front cover, wherein the first front cover is mounted on the front side of the rear shell, and the second front cover is mounted on the front side of the first front cover;

6. The refrigerator of claim 5, wherein the rear case part comprises:

7. the refrigerator according to claim 5,

the first front cover is provided with a cover plate and a second air duct wall extending forwards from the cover plate;

8. the refrigerator according to claim 5,

The first front cover is provided with a plurality of first air supply outlets and at least one second air supply outlet.

9. the refrigerator according to claim 4,

The at least one storage space comprises an upper tray space, an upper drawer space, a lower tray space and a lower drawer space which are sequentially arranged from top to bottom, and a refrigerating space arranged above the upper tray space; and is

the at least one second air duct is communicated with the refrigerating space;

10. The refrigerator according to claim 1, wherein the air outlet device further comprises:

the fan is a centrifugal fan;