CN111156765B

CN111156765B - A kind of refrigerator

Info

Publication number: CN111156765B
Application number: CN202010105289.9A
Authority: CN
Inventors: 刘铁伟; 李利云; 闫军旺
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2021-10-15
Anticipated expiration: 2040-02-20
Also published as: CN111156765A

Abstract

The invention discloses a refrigerator, relates to the technical field of storage devices, and aims to solve the problem that a transmission gear set in the refrigerator in the prior art occupies too large space in a ventilation air duct. The refrigerator comprises a refrigerator body, wherein an internal storage chamber is divided into a plurality of different temperature areas; the air duct cover plate and the rear wall of the storage chamber form a plurality of ventilation air ducts, and outlets of the plurality of ventilation air ducts correspond to the plurality of temperature areas one to one; the wind shield is arranged at the inlet of each ventilation air channel, the wind shields are arranged on the main shaft, and a working gear is fixed at the end part of the main shaft; the driving motor is used for driving the working gear to rotate so that the main shaft drives the plurality of wind shields to open or close the inlets of the corresponding ventilation air channels, and a worm is fixed on an output shaft of the driving motor; and a drive gear set for transmitting torque between the worm and the working gear. The refrigerator is used for storing food materials.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of storage devices, in particular to a refrigerator.

Background

The refrigerator is common electrical apparatus among people's daily life, and current refrigerator all opens or closes the air supply volume that adjusts the storeroom through the deep bead in the control ventilation duct to adjust the storage temperature of storeroom, and then improve the fresh-keeping effect of storing the edible material.

The wind shield of the existing refrigerator generally uses a motor as a power element to drive the wind shield to open or close an air outlet, and the rotating speed of the motor is high, so that a transmission gear set is arranged between the motor and a main shaft of the wind shield to adjust the rotating speed, the transmission gear set is formed by sequentially meshing a plurality of gears with different diameters, the gear at the output end of the transmission gear set is connected with the main shaft of the wind shield, the gear at the input end is connected with an output shaft of the motor, and the rotating speed output by the motor is adjusted.

However, a plurality of gears in the transmission gear set are all located on the same plane along the radial direction, the space occupied by the transmission gear set in the whole ventilation air duct is equal to the sum of the areas of the top circles of all the gears, and when one gear is added, the space occupied by the transmission gear set is increased by the area of the top circle of one gear, so that the space occupied by the transmission gear set in the whole ventilation air duct is overlarge.

Disclosure of Invention

The embodiment of the invention provides a refrigerator, wherein the whole occupied space of a transmission gear group in a ventilation air channel is smaller, and the internal space of the ventilation air channel can be saved.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the embodiment of the invention provides a refrigerator, which comprises a refrigerator body, a refrigerator door and a refrigerator door, wherein a storage chamber is arranged in the refrigerator body, and the storage chamber is divided into a plurality of different temperature areas; the air duct cover plate and the rear wall of the storage chamber form a plurality of ventilation air ducts, and outlets of the ventilation air ducts correspond to the temperature areas one by one; the wind screens are arranged at the inlets of the ventilation air channels, the wind screens are used for opening or closing the inlets of the ventilation air channels, the wind screens are arranged on the main shaft, and a working gear is fixed at the end part of the main shaft; the driving motor is used for driving the working gear to rotate so as to enable the main shaft to drive the plurality of wind shields to open or close the inlets of the corresponding ventilation air channels, and a worm is fixed on an output shaft of the driving motor; the transmission gear set is used for transmitting torque between the worm and the working gear, the transmission gear set comprises a first fixing shaft and a second fixing shaft which are parallel to the main shaft, at least one first duplicate gear capable of rotating around the first fixing shaft is sleeved on the first fixing shaft, at least one second duplicate gear capable of rotating around the second fixing shaft is sleeved on the second fixing shaft, the first duplicate gear is meshed with the adjacent two second duplicate gears respectively, the second duplicate gear is meshed with the adjacent two first duplicate gears respectively, the worm is meshed with one first duplicate gear at the end part of the first fixing shaft, and the working gear is meshed with one second duplicate gear at the end part of the second fixing shaft.

The refrigerator provided by the embodiment of the invention is characterized in that wind shields for opening or closing inlets of the ventilation air channels are respectively arranged at the inlets of the ventilation air channels in the refrigerator body, the wind shields are all arranged on the main shaft, the main shaft is controlled by the driving motor to rotate, so that the main shaft can be controlled by the driving motor to drive the wind shields to open or close the inlets of the ventilation air channels, a transmission gear set for adjusting the rotating speed of the driving motor is also arranged between the driving motor and the main shaft, only two fixed shafts are arranged in the transmission gear set and are fixed, at least one rotatable first duplicate gear sleeved on the first fixed shaft and at least one rotatable second duplicate gear sleeved on the second fixed shaft are mutually meshed to transmit torque, the first duplicate gear is meshed with two adjacent second duplicate gears, and the second duplicate gear is meshed with two adjacent first duplicate gears, the worm on the driving motor output shaft is meshed with a first duplicate gear at the end part of the first fixed shaft, the working gear is meshed with a second duplicate gear at the end part of the second fixed shaft, so that the torque output by the driving motor is transmitted to the working gear, and the main shaft drives the wind shield to open or close the inlet of the ventilation air channel.

Drawings

Fig. 1 is a schematic view of an overall structure of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an internal storage compartment of a refrigerator body according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of the storage chamber partitioned into multiple temperature regions according to the embodiment of the present invention;

FIG. 4 is a schematic diagram of a cover plate structure of an air duct according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an air distributor according to an embodiment of the present invention;

fig. 6 is a schematic view of an internal structure of an air distributor according to an embodiment of the present invention;

fig. 7 is a schematic view of a connection structure between a transmission gear set, a driving motor and a working gear according to an embodiment of the present invention;

FIG. 8 is an exploded view of a drive gear set provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a wind deflector, a spindle, a second sleeve, and a clutch assembly according to an embodiment of the present invention;

FIG. 10 is an exploded view of the wind deflector, the spindle, the second sleeve, and the clutch assembly provided in accordance with an embodiment of the present invention;

FIG. 11 is an enlarged view of the first and second friction plates according to the embodiment of the present invention;

FIG. 12 is a radial cross-sectional view of the spindle and retaining ring provided in accordance with an embodiment of the present invention;

fig. 13 is a schematic structural view illustrating a first air deflector opening a corresponding air outlet according to an embodiment of the present invention;

fig. 14 is a schematic structural view illustrating that the first air deflector and the second air deflector open corresponding air outlets according to the embodiment of the present invention;

fig. 15 is a schematic structural view of the corresponding air outlet with all three air deflectors open according to the embodiment of the present invention;

fig. 16 is a schematic structural view illustrating that a second air deflector opens a corresponding air outlet according to an embodiment of the present invention;

fig. 17 is a schematic structural view illustrating that the second air deflector and the third air deflector open corresponding air outlets according to the embodiment of the present invention;

fig. 18 is a schematic structural view illustrating that No. three wind deflectors open corresponding air outlets according to an embodiment of the present invention;

fig. 19 is a schematic structural view of the first and third wind deflectors opening the corresponding air outlets according to the embodiment of the present invention.

Reference numerals: 100. a box body; 110. a storage chamber; 111. a temperature region; 200. an air duct cover plate; 210. a ventilation duct; 300. an air flow distributor; 310. an air outlet; 320. a wind deflector; 330. a main shaft; 331. cutting into noodles; 332. a working gear; 340. a second sleeve; 341. a notch; 342. a return spring; 350. shifting blocks; 351. a fixing ring; 360. a first friction plate; 361. a groove; 370. a second friction plate; 371. a protrusion; 380. a first sleeve; 390. a housing; 400. a drive motor; 410. a worm; 500. a drive gear set; 510. a first fixed shaft; 520. a second fixed shaft; 530. a driving gear; 531. a helical gear; 532. a first straight gear; 540. a driven gear; 550. a first duplicate gear; 560. a second duplicate gear; 600. a door body.

Detailed Description

The refrigerator provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central", "upper", "lower", and "upper" are used herein,

The directional or positional relationships "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are indicative of those directions or positional relationships illustrated in the drawings, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a perspective view of an embodiment of a refrigerator according to the present invention, and as shown in fig. 1, the refrigerator according to an embodiment of the present invention has an approximately rectangular shape. As shown in fig. 1 and 2, the refrigerator has an external appearance defined by a storage chamber 110 defining a storage space and a plurality of door bodies 600 provided in the storage chamber 110. The storage chamber 110 is a cabinet 100 having an opening, the storage chamber 110 is vertically partitioned into a lower freezing chamber and an upper refrigerating chamber, and each of the partitioned spaces may have an independent storage space.

In detail, the freezing compartment is defined at a lower side of the storage compartment 110 and may be selectively covered by a drawer type freezing compartment door. The space defined above the freezing chamber is a refrigerating chamber. The refrigerating chamber is selectively opened or closed by a refrigerating chamber door pivotably mounted on the refrigerating chamber.

As shown in fig. 2 and 3, the refrigerating chamber inside the cabinet 100 according to the embodiment of the present invention is divided into a plurality of different temperature regions 111, an air duct cover 200 is disposed inside the storage chamber 110, as shown in fig. 4, a plurality of air ducts 210 are formed between the air duct cover 200 and the rear wall of the storage chamber 110, the plurality of air ducts 210 correspond to the plurality of temperature regions 111 one by one, an air distributor 300 is disposed at an inlet of the plurality of air ducts 210, as shown in fig. 5, a plurality of air outlets 310 are disposed on the air distributor 300, the plurality of air outlets 310 correspond to inlets of the plurality of air ducts 210 one by one, as shown in fig. 6, a wind deflector 320 is disposed at each air outlet 310, the plurality of wind deflectors 320 are disposed on the main shaft 330, a working gear 332 is fixedly connected to an end of the main shaft 330, the working gear 332 is driven by the driving motor 400 to rotate, so as to control the main shaft 330 and drive the wind deflectors 320 to open or close the corresponding air outlets 310, the output shaft of the driving motor 400 is provided with a worm 410, and torque is transmitted between the worm 410 and the working gear 332 through the transmission gear set 500.

Specifically, as shown in fig. 7 and 8, the transmission gear set 500 includes a first fixed shaft 510 and a second fixed shaft 520 parallel to the main shaft 330, at least one first duplicate gear 550 capable of rotating around the first fixed shaft 510 is sleeved on the first fixed shaft 510, at least one second duplicate gear 560 capable of rotating around the second fixed shaft 520 is sleeved on the second fixed shaft 520, the first duplicate gears 550 are respectively engaged with two adjacent second duplicate gears 560, the second duplicate gears 560 are respectively engaged with two adjacent first duplicate gears 550, the worm 410 is engaged with one first duplicate gear 550 located at an end of the first fixed shaft 510, and the working gear 332 is engaged with one second duplicate gear 560 located at an end of the second fixed shaft 520.

In the refrigerator provided by the embodiment of the present invention, the air deflectors 320 for opening or closing the inlets of the air ducts 210 are respectively disposed at the inlets of the air ducts 210 inside the cabinet 100, the air deflectors 320 are all disposed on the main shaft 330, the main shaft 330 is controlled by the driving motor 400 to rotate, so that the driving motor 400 can control the main shaft 330 to drive the air deflectors 320 to open or close the inlets of the air ducts 210, a transmission gear set 500 for adjusting the rotation speed of the driving motor 400 is further disposed between the driving motor 400 and the main shaft 330, only two fixed shafts are disposed in the transmission gear set 500, the two fixed shafts are fixed, at least one rotatable first duplicate gear 550 sleeved on the first fixed shaft 510 and at least one rotatable second duplicate gear 560 sleeved on the second fixed shaft 520 are engaged with each other to transmit torque, the first duplicate gear 550 is engaged with two adjacent second duplicate gears 560, the second duplicate gear 560 is engaged with adjacent two first duplicate gears 550, the worm 410 on the output shaft of the driving motor 400 is engaged with one first duplicate gear 550 at the end of the first fixed shaft 510, the working gear 332 is engaged with one second duplicate gear 560 at the end of the second fixed shaft, so as to transmit the torque output by the driving motor 400 to the working gear 332, so that the main shaft 330 drives the wind shield 320 to rotate, because the gears sleeved on the two fixed shafts are axially distributed along the fixed shafts, the space occupied by the transmission gear set 500 along the radial direction of the gears is only the sum of the areas of the top circles of the two gears, the whole volume of the transmission gear set 500 is effectively reduced, when the gears are required to be added, the occupied space cannot be increased along the radial direction of the gears, the thickness of only one gear is increased along the axial direction of the fixed shaft, and the occupied space of the transmission gear set 500 in the ventilation air duct 210 is effectively reduced.

Further, as shown in fig. 7 and 8, the first dual gear 550 engaged with the worm 410 is provided as a driving gear 530, two sub-gears of the driving gear 530 are a first straight gear 532 and a helical gear 531, respectively, the helical gear 531 is engaged with the worm 410, the first straight gear 532 is engaged with one sub-gear of the second dual gear 560 adjacent thereto, the other sub-gear of the second dual gear 560 is engaged with one sub-gear of one first dual gear 550 adjacent to the driving gear 530, the other sub-gear of the first dual gear 550 is engaged with one sub-gear of the second dual gear 560 at an end of the second fixed shaft 520, and the other sub-gear of the second dual gear 560 is engaged with the working gear 332. Since the dual gear includes two sub gears, one large sub gear and one small sub gear, which are fixed to each other and can rotate together, the two sub gears of the second dual gear 560 are respectively engaged with one sub gear of the first dual gear 550 and the first straight gear 532 of the driving gear 530, so that the torque output by the driving motor 400 can be transmitted to one first dual gear 550 adjacent to the driving gear 530, the first dual gear 550 transmits the torque to the other corresponding second dual gear 560, and so on, and finally the second dual gear 560 at the end of the second fixed shaft 520 can transmit the torque to the working gear 332 on the main shaft 330, thereby reducing the rotation speed of the driving motor 400, and enabling the main shaft 330 to drive the plurality of wind deflectors 320 to open or close the wind outlets 310.

Preferably, when the number of the dual gears on the first and second

fixed shafts

510 and 520 needs to be increased, the first and second

dual gears

550 and 560 are correspondingly increased, the first dual gear 550 and the corresponding second dual gear 560 are engaged with each other to transmit torque, and when the number of the dual gears is increased, the thickness of one dual gear is increased only along the axial direction of the fixed shaft, and the occupied space is not increased along the direction perpendicular to the axial direction of the fixed shaft, so that the space inside the refrigerator can be effectively saved.

Further, the second dual gear 560 that meshes with the working gear 332 meshes with both the corresponding first dual gear 550 and the corresponding working gear 332, but the first dual gear 550 and the working gear 332 are not coaxial with each other, and therefore, a second spur gear may be used for the second dual gear 550, that is, the second dual gear 560 may be replaced with a common spur gear, and may mesh with the corresponding first dual gear 550 and the corresponding working gear 332, respectively.

As shown in fig. 6 and 9, the edge of the wind deflector 320 provided in the embodiment of the present invention is fixedly connected with a first sleeve 380, the plurality of first sleeves 380 are all sleeved on the main shaft 330, the main shaft 330 is sleeved with a plurality of second sleeves 340, the plurality of second sleeves 340 correspond to the plurality of first sleeves 380 one to one, as shown in fig. 10, the second sleeves 340 are provided with notches 341 extending along the circumferential direction, the notches 341 are provided with a shifting block 350, the shifting block 350 is connected with the main shaft 330, the lengths of the notches 341 formed on the plurality of second sleeves 340 extending along the circumferential direction of the second sleeves 340 are different, the second sleeves 340 are connected with the corresponding first sleeves 380 through a clutch assembly, the clutch assembly can enable the second sleeves 340 to drive the corresponding first sleeves 380 to rotate, so that the first sleeves 380 drive the corresponding wind deflector 320 to rotate between the open position and the closed position, and when the first sleeves 380 drive the wind deflector 320 to rotate to the open position or the closed position to stop rotating, the clutch assembly may disengage the second sleeve 340 from the corresponding first sleeve 380, and a reset mechanism is also provided within the second sleeve 340 for re-engaging the clutch assembly.

In the air distributor 300, the second sleeve 340 and the first sleeve 380 are engaged or disengaged through the clutch assembly, that is, when the second sleeve 340 rotates along with the main shaft 330, because the second sleeve 340 and the first sleeve 380 are engaged with each other, the first sleeve 380 rotates along with the second sleeve 340, when the first sleeve 380 drives the wind deflector 320 to rotate to the open position or the closed position, the wind deflector 320 cannot continue to rotate, the clutch assembly separates the second sleeve 340 from the first sleeve 380, that is, no torque is transmitted between the second sleeve 340 and the first sleeve 380, at this time, the second sleeve 340 can continue to rotate along with the main shaft 330, and the wind deflector 320 stops rotating, then the reset mechanism is arranged in the second sleeve 340, so that the separated clutch assembly can be engaged again, thereby ensuring that the torque can be transmitted again between the second sleeve 340 and the first sleeve 380, because the length of the notch 341 on each second sleeve 340 along the circumferential direction is different, therefore, the second sleeve 340 sequentially drives the corresponding first sleeves 380 to rotate according to the sequence of the gaps 341 from small to large, so as to respectively control each wind shield 320 to open or close the corresponding air outlet 310, and further realize the control of the air supply volume of each ventilation air duct 210, so as to accurately control the storage temperature of the temperature area 111 corresponding to each ventilation air duct 210, store different food materials in different temperature areas 111, improve the preservation effect of the food materials, and control the opening or closing of the plurality of wind shields 320 by the same driving motor 400, the whole structure is simple, the control is convenient, and the cost is low.

It should be noted that when the air deflector 320 is in the open position, the air outlet 310 corresponding to the air deflector 320 is completely opened, and when the air deflector 320 is in the closed position, the air outlet 310 corresponding to the air deflector 320 is closed.

Specifically, as shown in fig. 9 and 10, the spindle 330 starts to rotate, the second sleeve 340 with the smallest gap 341 rotates along with the corresponding shifting block 350 and the spindle 330, the second sleeve 340 drives the corresponding first sleeve 380 to rotate, and the shifting blocks 350 of the remaining second sleeves 340 rotate in the gap 341 because the gap 341 is larger, when the wind deflector 320 corresponding to the first sleeve 380 rotates to the limit position, the wind deflector 320 is blocked from rotating, so that the clutch assembly between the second sleeve 340 with the smallest gap 341 and the corresponding first sleeve 380 is separated, i.e. the two slip with each other, and at this time, the shifting block 350 of the next second sleeve 340 arranged in the order of the gaps 341 from small to large rotates to the tip of the corresponding gap 341, the spindle 330 rotates continuously, the second sleeve 340 drives the corresponding first sleeve 380 to rotate, until the first sleeve 380 drives the corresponding wind deflector 320 to rotate to the limit position, and then the next second sleeve 340 continues to drive the corresponding first sleeve 380 to rotate, and so on, so as to drive the main shaft 330 to rotate through the driving motor 400, that is, each wind shield 320 can be driven to rotate, and the main shaft 330 is driven to rotate reversely through the driving motor 400, that is, the wind shields 320 rotate in opposite directions can be realized, and a reset mechanism is arranged in the second sleeve 340, so that the separated clutch assembly is structurally repeated, that is, torque can be transmitted between the second sleeve 340 and the first sleeve 380 again, so that the first sleeve 380 drives the wind shields 320 to rotate, and thus the wind shields 320 are opened or the air outlet 310 is closed.

As shown in fig. 10 and 11, the clutch assembly according to the embodiment of the present invention includes a first friction plate 360 and a second friction plate 370 sleeved on the spindle 330, the first friction plate 360 is fixed on an end surface of the second sleeve 340 facing the corresponding first sleeve 380, the second friction plate 370 is fixed on an end surface of the first sleeve 380 facing the corresponding second sleeve 340, friction surfaces of the first friction plate 360 and the second friction plate 370 are attached to each other, and when a power for driving the spindle 330 to rotate by the driving motor 400 is greater than a friction force between the first friction plate 360 and the second friction plate 370, the first friction plate 360 and the second friction plate 370 are separated from each other. The clutch assembly is composed of two friction plates, that is, friction force is applied between the first friction plate 360 and the second friction plate 370, so that the second sleeve 340 drives the corresponding first sleeve 380 to rotate, when the first sleeve 380 drives the corresponding wind shield 320 to rotate to the limit position and is blocked, the spindle 330 continues to drive the second sleeve 340 to rotate, at this time, because the wind shield 320 is blocked and cannot rotate, that is, a resistance force is provided between the first friction plate 360 and the second friction plate 370, the resultant force of the resistance force and the friction force between the two friction plates is smaller than the power of the spindle 330 in rotation, therefore, the first friction plate 360 and the second friction plate 370 slip with each other, that is, the two friction plates separate from each other, so that no torque is transmitted between the second sleeve 340 and the first sleeve 380.

Preferably, as shown in fig. 10 and 11, a plurality of grooves 361 are formed on the first friction plate 360 along the radial direction of the main shaft 330, a plurality of protrusions 371 are formed on the second friction plate 370 along the radial direction of the main shaft 330, and when the protrusions 371 extend into the grooves 361, torque can be transmitted between the second sleeve 340 and the corresponding first sleeve 380. That is, the two opposite friction surfaces between the first friction plate 360 and the second friction plate 370 are respectively provided with a corresponding groove 361 and a corresponding protrusion 371, so that the protrusion 371 enters the groove 361, that is, the two friction surfaces between the first friction plate 360 and the second friction plate 370 are mutually engaged, and thus the torque can be transmitted between the second sleeve 340 and the corresponding first sleeve 380.

Preferably, the plurality of grooves 361 of the first friction plate 360 may be directly formed on the end surface of the second sleeve 340 facing the corresponding first sleeve 380, so that one part can be reduced, and the processing time of the part can be reduced.

As shown in fig. 10, the return mechanism provided in the embodiment of the present invention is a return spring 342, the return spring 342 is sleeved on the main shaft 330, and two ends of the return spring 342 are respectively abutted against the inner wall of the second sleeve 340 and the shifting block 350. The second sleeve 340 is pressed by the return spring 342, so that the first friction plate 360 and the second friction plate 370 on the second sleeve 340 are tightly attached, when the wind shield 320 is driven to the extreme position and is blocked, the protrusion 371 on the first friction plate 360 is pulled out from the groove 361 on the second friction plate 370, the return spring 342 in the second sleeve 340 is compressed, and when the protrusion 371 corresponds to the groove 361, the elastic force of the return spring 342 pushes the second sleeve 340, so that the protrusion 371 enters the groove 361, and the first friction plate 360 and the second friction plate 370 are tightly attached.

The notch 341 structure provided in the embodiment of the present invention may be directly formed on the outer wall of the second sleeve 340 along the circumferential direction, or may also adopt a structure in which, as shown in fig. 10, the notch 341 extends along the axial direction of the second sleeve 340 to an end far from the corresponding first sleeve 380 and penetrates through the end of the second sleeve 340. Compared with the structure, the gap 341 penetrates through the end part of the second sleeve 340, the shifting block 350 can be fixed on the main shaft 330 firstly when the shifting block 350 is fixed with the main shaft 330, then the second sleeve 340 is sleeved on the main shaft 330, and the shifting block 350 stretches into the gap 341 from the end part of the second sleeve 340 when the shifting block 350 is fixed with the main shaft 330, so that no other part blocks when the shifting block 350 is fixed with the main shaft 330, thereby reducing the processing difficulty and saving the working hours.

In order to further reduce the processing difficulty, as shown in fig. 10, the shifting block 350 is fixed on a fixing ring 351, then the fixing ring 351 is sleeved on the main shaft 330, the fixing ring 351 is arranged in the second sleeve 340, the fixing ring 351 rotates along with the main shaft 330, and the end of the return spring 342 contacts with the end face of the fixing ring 351. The shifting block 350 is fixed on the mounting ring, and when the mounting ring, the reset spring 342 and the second sleeve 340 are sleeved on the main shaft 330 in sequence, so that the processing difficulty is reduced and the working efficiency is improved.

However, this connection method requires a fixed ring 351 to be installed to perform a welding operation, then another component such as the second sleeve 340 is installed, then another fixed ring 351 is installed to perform a welding operation, and then another component such as the second sleeve 340 is installed to perform a welding operation, which results in a complicated overall installation process, and therefore, as shown in fig. 12, the outer wall of the spindle 330 provided in the embodiment of the present invention is provided with a cut surface 331 along the axial direction, and the radial cross section of the inner ring of the fixed ring 351 is the same as the radial cross section of the spindle 330, and has a size suitable for the radial cross section of the spindle 330. The section 331 is axially arranged on the outer wall of the main shaft 330, the section of the inner ring of the fixing ring 351 and the section of the main shaft 330 are in the same shape, namely the inner ring of the fixing ring 351 is also provided with a plane, when the fixing ring 351 is sleeved on the main shaft 330, the plane of the inner ring of the fixing ring 351 is attached to the section 331 on the main shaft 330, so that the fixing ring 351 is prevented from rotating around the main shaft 330, and by using the connecting mode, other fixing process steps are not required to be added during installation, the processing time is saved, and the efficiency is improved.

Preferably, one or more cutting surfaces 331 may be provided on the spindle 330.

The two end parts of the notch 341 along the circumferential direction of the second sleeve 340 provided by the embodiment of the present invention are the first end part and the second end part respectively, when the wind deflectors 320 are all in the closed position, the shifting block 350 in the notch 341 with the minimum length along the circumferential direction of the second sleeve 340 is in contact with the two end parts of the notch 341, the remaining shifting blocks 350 are in contact with the first end part, the rotation direction of the shifting block 350 from the first end part to the second end part is consistent with the rotation direction of the wind deflectors 320 from the closed position to the open position, when the wind deflectors 320 are rotated from the closed position to the open position, the rotation angles around the main shaft 330 are all equal, the central angles corresponding to the lengths of the notches 341 form an equal difference series from small to large, and the tolerance of the angle is equal to the equal difference series. Specifically, for example, the rotation angle of the wind deflector 320 is 90 °, that is, the difference between the central angles corresponding to the lengths of the notches 341 is also 90 °, when the second sleeve 340 with the smallest notch 341 rotates the corresponding wind deflector 320 from the closed position to the open position by 90 °, the shift block 350 on the next second sleeve 340 also rotates by 90 ° around the main shaft 330, because the difference between the central angles corresponding to the lengths of the notches 341 on the two second sleeves 340 along the circumferential direction of the second sleeve 340 is also 90 °, the shift block 350 of the second sleeve just slides along the first end to the second end of the notch 341, at this time, the shift block 350 continues to rotate along with the main shaft 330 to drive the second sleeve 340 and the corresponding wind deflector 320 to rotate, and the wind deflector 320 corresponding to the second sleeve 340 with the smallest notch 341 stops rotating at the open position, so that only one wind deflector 320 rotates at the same time, to enable individual control of each wind deflector 320 to individually regulate the temperature of the corresponding storage space.

As shown in fig. 5 and 6, the air distributor 300 according to the embodiment of the present invention further includes a housing 390, the air outlets 310 are all disposed on the housing 390, the main shaft 330 and the wind blocking plate 320 are both disposed in the housing 390, one end of the main shaft 330 is rotatably connected to the inner wall of the housing 390, and the other end of the main shaft extends out of the housing 390 and is connected to the working gear 332. The main shaft 330 and other components are disposed inside the housing 390, so that the air distributor 300 forms an integral component, which can be integrally mounted and dismounted, further improving the mounting efficiency, and facilitating the later maintenance.

More specifically, the limit position of rotation of wind deflector 320 is a position where wind deflector 320 contacts the inner wall of housing 390, that is, the inner wall of housing 390 blocks, so that wind deflector 320 cannot rotate any further, and at this time, the limit position of rotation of wind deflector 320 is defined.

It should be noted that, the inside fan that still is provided with of shell 390, the air intake has been seted up to the place that corresponds the fan, supplies air to air outlet 310 through the fan, and the rethread is a plurality of ventilation air ducts 210, supplies air to different temperature region 111 to the realization is regulated and control the temperature of different temperature region 111.

Specifically, in the embodiment of the present invention, three temperature regions 111 are disposed in the storage chamber 110, three ventilation air ducts 210 are disposed between the storage chamber 110 and the air duct cover 200, three air outlets 310 are disposed on the outer casing 390 of the air distributor 300 and respectively correspond to inlets of the three ventilation air ducts 210, three wind shields 320 are disposed on the main shaft 330 and respectively correspond to the three air outlets 310, and the specific working process of the air distributor 300 is as follows:

as shown in fig. 9, the three wind deflectors 320 are all in a closed state, and the first wind deflector 320, the second wind deflector 320 and the third wind deflector 320 are sequentially arranged from left to right, and the notch 341 on the second sleeve 340 corresponding to the first wind deflector 320 is the smallest, and the notch 341 on the second sleeve 340 corresponding to the third wind deflector 320 is the largest, at this time, the driving motor 400 is controlled to drive the main shaft 330 to rotate forward, the first wind deflector 320 rotates along with the corresponding second sleeve 340, and the shift block 350 in the second sleeve 340 corresponding to the second and third wind deflectors 320 moves in the notch 341, when the first wind deflector 320 rotates around the main shaft 330 by 90 degrees, the first wind deflector 320 rotates to the limit position, at this time, the first wind deflector 320 stops rotating, the first friction plate 360 and the second friction plate 370 between the first sleeve 380 and the corresponding second sleeve 340 on the first wind deflector 320 mutually slip, and are in an overrunning state (that is, no torque is transmitted between the first wind deflector 320 and the second sleeve 340), the air outlet 310 corresponding to the first air deflector 320 is opened, and the shifting block 350 on the second sleeve 340 corresponding to the second air deflector 320 is rotated to the end of the notch 341, as shown in fig. 13.

Then, the spindle 330 continues to rotate, the second sleeve 340 corresponding to the second air deflector 320 rotates along with the spindle 330 under the driving of the dial 350, at this time, the second sleeve 340 corresponding to the first air deflector 320 continues to rotate, the dial 350 of the second sleeve 340 corresponding to the third air deflector 320 continues to move in the notch 341, after the second air deflector 320 rotates 90 degrees around the spindle 330, the second air deflector 320 rotates to the limit position, at this time, the second air deflector 320 stops rotating, the first friction plate 360 and the second friction plate 370 between the first sleeve 380 on the second air deflector 320 and the corresponding second sleeve 340 slip with each other, and are in an overrunning state, the air outlets 310 corresponding to the first air deflector 320 and the second air deflector 320 are both opened, and the dial 350 on the second sleeve 340 corresponding to the third air deflector 320 rotates to the tip of the notch 341, as shown in fig. 14.

At this time, if the driving motor 400 is controlled to continue to drive the main shaft 330 to rotate in the forward direction, the third wind deflector 320 can be opened by repeating the above steps, that is, all three wind deflectors 320 are in an opened state, as shown in fig. 15; if the driving motor 400 is controlled to drive the spindle 330 to rotate reversely, that is, the spindle 330 drives the wind deflectors 320 to rotate in the direction of closing the air outlet 310, at this time, the first wind deflector 320 still rotates along with the spindle 330, and only the second wind deflector 320 of the three wind deflectors 320 opens the corresponding air outlet 310 after the first wind deflector 320 is closed, as shown in fig. 16.

After all three wind deflectors 320 are opened and the air outlets 310 need to be closed in sequence, only the driving motor 400 is controlled to drive the main shaft 330 to rotate reversely, so that the main shaft 330 drives the wind deflectors 320 to rotate in sequence in the direction of closing the air outlets 310, as shown in fig. 17, the first wind deflector 320 is still closed first, and the processes are repeated in sequence, as shown in fig. 18, after the first wind deflector 320 and the second wind deflector 320 are closed, at this time, the main shaft 330 continues to rotate reversely, as shown in fig. 9, so that the third wind deflector 320 is closed, that is, all three air outlets 310 are closed, and after the first wind deflector 320 and the second wind deflector 320 are closed, the driving motor 400 is also controlled to drive the main shaft 330 to rotate normally, so that the first wind deflector 320 is opened, as shown in fig. 19, at this time, the first wind deflector 320 and the third wind deflector 320 in the three wind deflectors 320 are in an opened state.

In summary, when three wind deflectors 320 are provided, the air distributor 300 according to the embodiment of the present invention can achieve eight different working states of the three air outlets 310, that is, eight working states of all three air outlets 310 being opened, the air outlets 310 corresponding to the first and second wind deflectors 320 being opened, the air outlets 310 corresponding to the first and third wind deflectors 320 being opened, the air outlets 310 corresponding to the second and third wind deflectors 320 being opened, the air outlets 310 corresponding to the first wind deflector 320 being opened, the air outlets 310 corresponding to the second wind deflector 320 being opened, the air outlets 310 corresponding to the third wind deflector 320 being opened, and all three air outlets 310 being closed.

The air distributor 300 provided by the embodiment of the invention can control the plurality of air baffles 320 to open or close the corresponding air outlets 310 through one driving motor 400, so that the control is more convenient, the overall structure is simpler, and the overall cost is favorably reduced.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A refrigerator, characterized by comprising:

a cabinet having a storage chamber therein, the storage chamber being partitioned into a plurality of different temperature regions;

the air duct cover plate and the rear wall of the storage chamber form a plurality of ventilation air ducts, and outlets of the ventilation air ducts correspond to the temperature areas one by one;

the wind screens are arranged at the inlets of the ventilation air channels, the wind screens are used for opening or closing the inlets of the ventilation air channels, the wind screens are arranged on the main shaft, and a working gear is fixed at the end part of the main shaft;

the driving motor is used for driving the working gear to rotate so as to enable the main shaft to drive the plurality of wind shields to open or close the inlets of the corresponding ventilation air channels, and a worm is fixed on an output shaft of the driving motor;

a transmission gear set for transmitting torque between the worm and the working gear, wherein the transmission gear set comprises a first fixed shaft and a second fixed shaft which are parallel to the main shaft, at least one first duplicate gear which can rotate around the first fixed shaft is sleeved on the first fixed shaft, at least one second duplicate gear which can rotate around the second fixed shaft is sleeved on the second fixed shaft, the first duplicate gears are respectively meshed with two adjacent second duplicate gears, the second duplicate gears are respectively meshed with two adjacent first duplicate gears, the worm is meshed with one first duplicate gear which is positioned at the end part of the first fixed shaft, and the working gear is meshed with one second duplicate gear which is positioned at the end part of the second fixed shaft;

the wind screen comprises a main shaft, a wind screen plate, a plurality of first sleeves, a plurality of shifting blocks, a plurality of second sleeves, a plurality of notches, a plurality of clutch assemblies and a plurality of clutch assemblies, wherein the first sleeves are fixed at the edge of the wind screen plate, the first sleeves are all sleeved on the main shaft, the main shaft is further provided with the shifting blocks, the second sleeves are sleeved with the second sleeves, the second sleeves are provided with the notches, the shifting blocks are arranged at the notches in a one-to-one correspondence manner, the lengths of the notches extending along the circumferential direction of the second sleeves are different, the second sleeves and the first sleeves are arranged in a one-to-one correspondence manner, the second sleeves and the corresponding first sleeves are connected through the clutch assemblies, the clutch assemblies can enable the second sleeves to drive the corresponding first sleeves to rotate, so that the first sleeves drive the corresponding wind screen plate to rotate between an opening position and a closing position, and when the first sleeves drive the wind screen plate to rotate to the opening position or the closing position to stop rotating, the clutch component can enable the second sleeve to be separated from the corresponding first sleeve, and a reset mechanism is arranged in the second sleeve and used for enabling the clutch component to be jointed again.

2. The refrigerator as claimed in claim 1, wherein the first dual gear engaged with the worm is a driving gear, two sub-gears of the driving gear are a first straight gear and a helical gear, respectively, the helical gear is engaged with the worm, the first straight gear is engaged with one sub-gear of an adjacent second dual gear, another sub-gear of the second dual gear adjacent to the first straight gear is engaged with one sub-gear of the first dual gear adjacent to the driving gear, another sub-gear of the first dual gear adjacent to the driving gear is engaged with one sub-gear of the second dual gear at an end of the second fixed shaft, and another sub-gear of the second dual gear at an end of the second fixed shaft is engaged with the working gear.

3. The refrigerator as claimed in claim 2, wherein the second dual gear engaged with the working gear at the end of the second fixed shaft may employ a second spur gear engaged with the working gear and the adjacent first dual gear, respectively.

4. The refrigerator as claimed in claim 1, wherein the clutch assembly includes a first friction plate and a second friction plate sleeved on the main shaft, the first friction plate is fixed on an end surface of the second sleeve facing the first sleeve, the second friction plate is fixed on an end surface of the first sleeve facing the second sleeve, friction surfaces of the first friction plate and the second friction plate are attached to each other, and when a power of the driving motor driving the main shaft to rotate is greater than a friction force between the first friction plate and the second friction plate, the first friction plate and the second friction plate are separated from each other.

5. The refrigerator as claimed in claim 4, wherein the first friction plate has a plurality of grooves formed thereon along a radial direction of the main shaft, the second friction plate has a plurality of protrusions formed thereon along the radial direction of the main shaft, and when the protrusions extend into the grooves, the second sleeves drive the corresponding first sleeves to rotate.

6. The refrigerator as claimed in claim 1, wherein the return mechanism is a return spring, and the return spring is sleeved on the main shaft and is disposed between an inner wall of the second sleeve and the dial block.

7. The refrigerator of claim 6, wherein the notch extends in an axial direction of the second sleeve away from the corresponding end of the first sleeve and through the end of the second sleeve.

8. The refrigerator according to claim 7, wherein the shift block is connected with the main shaft through a fixing ring, the fixing ring is sleeved on the main shaft, the fixing ring rotates along with the main shaft, the shift block is fixed on an outer wall of the fixing ring, and an end of the return spring is in contact with an end face of the fixing ring.

9. The refrigerator as claimed in claim 8, wherein the spindle has a cut surface on an outer wall thereof in an axial direction, and the inner ring of the fixing ring has a cross section in a radial direction having the same shape as the cross section in the radial direction of the spindle and is sized accordingly.

10. The refrigerator according to claim 1, wherein two end portions of the notch in the circumferential direction of the second sleeve are a first end portion and a second end portion, when the plurality of wind deflectors are in the closed position, the paddle block in the notch having the smallest length in the circumferential direction of the second sleeve is in contact with the two end portions of the notch, the rest of the paddle blocks are in contact with the first end portion, a direction in which the paddle block rotates from the first end portion to the second end portion is identical to a direction in which the wind deflectors rotate from the closed position to the open position, when the plurality of wind deflectors rotate from the closed position to the open position, angles of rotation around the main shaft are all equal, central angles corresponding to the lengths of the plurality of notches form an arithmetic progression from small to large, and the angles are equal to a tolerance of the arithmetic progression.

11. The refrigerator according to claim 1, further comprising a housing, wherein the housing is disposed at an inlet of the plurality of ventilation air ducts, the spindle and the wind deflectors are disposed inside the housing, the housing is provided with a plurality of air outlets, the plurality of wind deflectors correspond to the plurality of air outlets one by one, one end of the spindle is rotatably connected to an inner wall of the housing, and the other end of the spindle extends out of the housing and is connected to the working gear.