CN114688805A

CN114688805A - Air supply device for refrigerating and freezing device and refrigerating and freezing device

Info

Publication number: CN114688805A
Application number: CN202011583535.8A
Authority: CN
Inventors: 程学丽; 许以浩; 崔展鹏; 李涛
Original assignee: Guizhou Haier Electric Appliance Co ltd; Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Guizhou Haier Electric Appliance Co ltd; Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-01
Anticipated expiration: 2040-12-28
Also published as: CN114688805B

Abstract

The invention provides an air supply device for a refrigerating and freezing device and the refrigerating and freezing device. The air supply device comprises a peripheral wall, a shielding part, a transmission device and a reset device, wherein a plurality of ventilation openings are formed in the peripheral wall; the shielding part can be rotatably arranged in the peripheral wall around the axis of the peripheral wall and comprises a shielding plate or a plurality of shielding plates which synchronously rotate; the shielding plate is movably arranged along the radial direction of the peripheral wall, the transmission device is configured to enable the shielding plate to move towards the peripheral wall at least in the process that the shielding plate rotates from one rotating position to the rotating position for shielding the one or more ventilation openings, and the shielding plate is in contact and abutted with the peripheral wall when the shielding plate is at the rotating position for shielding the one or more ventilation openings. The transmission device and the reset device are provided, so that each shielding plate can be arranged at a distance from the peripheral wall in the rotating process to have smaller rotating resistance. When sheltering from the vent, effectively shelter from, reduce and prevent to leak out, improve air supply efficiency. The intelligent degree is high.

Description

Air supply device for refrigerating and freezing device and refrigerating and freezing device

Technical Field

The invention relates to the technical field of household appliance refrigeration and storage, in particular to an air supply device for a refrigeration and freezing device and the refrigeration and freezing device.

Background

With the increasingly developing society and the increasing living standard of people, the rhythm of life of people is faster and faster, so that people are more and more willing to buy a lot of food to place in the refrigerator, and various refrigerators become one of the indispensable household appliances in daily life of people. The prior refrigerator has two or more storage drawers in the freezing storage chamber, and the whole freezing chamber is communicated and has no partition. When a user places or takes food in or out of one or more layers of drawers, the compartment sensor detects temperature fluctuation, the refrigerator main control board controls the freezing air duct to supply air to and refrigerate the whole freezing compartment, and the whole compartment can not stop refrigerating until the temperature of the compartment is reduced to a set temperature. The existing refrigerator can not supply air according to the requirement, and the energy is wasted: when food is placed or taken by a certain layer of drawer, the whole compartment can supply air, and the air can not be supplied to the area needing refrigeration independently, so that energy waste exists; when food is placed or taken from the multi-layer drawer, part of the drawer is cooled to the set temperature, and the freezing chamber is still the mode of air supply of the whole chamber, so that energy waste exists. The existing refrigerator has longer refrigeration time and slightly poor preservation effect: after the specification of the fan and the structure of the air duct are determined, the air supply of the whole compartment is lower than that of an independent air supply scheme, the air quantity and the air speed of the air duct air outlet in the same region are lower than those of the independent air supply scheme, the compartment or food is cooled slightly slowly, if meat passes through ice crystals, the time is long, the juice loss is large, and the preservation effect is slightly poor.

Disclosure of Invention

In order to realize independent air supply and quick refrigeration of the freezing chamber after a user opens a door to place/take food, the invention provides a shunting air supply device for supplying air to each storage chamber, however, the inventor finds that the existing shunting air supply device has an air leakage phenomenon during working. The invention provides a blowing device for a refrigerating and freezing device and the refrigerating and freezing device.

In one aspect, the invention provides an air supply device for a refrigeration and freezing device, which comprises a peripheral wall, a shielding part, a transmission device and a reset device, wherein a plurality of ventilation openings are arranged on the peripheral wall;

the shielding part can be arranged in the peripheral wall in a rotating mode around the axis of the peripheral wall, and comprises a shielding plate or a plurality of shielding plates which rotate synchronously, so that the shielding plate can be used for completely shielding, partially shielding or completely exposing each ventilation opening in a controlled mode when the shielding part rotates to different rotating positions;

the shielding plate is movably arranged along the radial direction of the peripheral wall, the transmission device is configured to enable the shielding plate to move towards the peripheral wall at least in the process that the shielding plate rotates from one rotating position to the rotating position for shielding one or more ventilation openings, and when the shielding plate is at the rotating position for shielding one or more ventilation openings, the distance between the shielding plate and the peripheral wall is the nearest or the shielding plate is in contact and abutted with the peripheral wall;

the reset means is configured to urge the shutter to move toward the middle of the peripheral wall.

Optionally, the transmission device includes a fixed protrusion, the shielding plate is provided with a movable protrusion, the fixed protrusion is disposed in the peripheral wall and protrudes toward the peripheral wall, the movable protrusion protrudes toward the middle of the peripheral wall, and the movable protrusion cooperates with the fixed protrusion to move the shielding plate toward the peripheral wall.

Optionally, the number of the fixing protrusions is multiple, and the fixing protrusions are respectively arranged corresponding to multiple rotating positions of the shielding plate;

the transmission device comprises a transmission device, a plurality of movable protrusions and a linkage structure, wherein the number of the movable protrusions is one, the shielding plates are multiple, and the linkage structure is configured to enable the shielding plates to synchronously move along the radial direction of the peripheral wall.

Optionally, the fixing protrusions are arranged in a preset number of groups, each group of the fixing protrusions comprises at least one fixing protrusion; the preset number is equal to the number of the shielding plates;

each baffle plate is provided with the movable protrusion, and the movable protrusion on each baffle plate is matched with the fixed protrusions in the group of fixed protrusions.

Optionally, the surface of the movable projection facing the fixed projection includes a first surface and a second surface connected to each other to move the shielding plate toward the peripheral wall;

the ratio of the angle value of the shielding plate rotated on the fixing protrusion through the first surface to the distance of the shielding plate moving along the radial direction of the peripheral wall is a first ratio, the ratio of the angle value of the shielding plate rotated on the fixing protrusion through the second surface to the distance of the shielding plate moving along the radial direction of the peripheral wall is a second ratio, and the first ratio is larger than the second ratio.

Optionally, the angle value that the shutter plate rotates on the fixing projection through the second surface is 1/10 to 1/25 of the angle value that the shutter plate rotates on the fixing projection through the first surface;

the distance by which the shielding plate is moved in the radial direction of the peripheral wall by the second surface and the fixing projection is 1/6 to 1/2 of the distance by which the shielding plate is moved in the radial direction of the peripheral wall by the first surface and the fixing projection.

Optionally, the fixed and movable protrusions are each symmetrically disposed about a reference plane passing through the axis of rotation of the shield.

Optionally, the air supply device further includes:

a base; the shielding part is also provided with a turntable part which is rotatably arranged on the base; the shielding plates are arranged on one side of the turntable part and are arranged at intervals along the circumferential direction of the turntable part;

the centrifugal impeller is mounted on the base and is positioned on the inner sides of the shielding plates;

the motor is arranged on the radial outer side of the turntable part and is installed on the base;

the driving gear is arranged on an output shaft of the motor; and

the driven gear is arranged on the turntable part or integrally formed with the turntable part and is meshed with the driving gear;

the base comprises a base plate, a bottom cover and a limiting ring section extending from one side of the base plate; the centrifugal wind wheel is arranged on the other side of the base plate;

the turntable part is a swivel and is arranged on one side of the base plate, and each shielding plate extends out of the other side of the base plate; one side of the turntable part facing the base plate is provided with a positioning bulge, and the positioning bulge is positioned between the two sections of the limiting ring section;

the bottom cover is arranged on one side of the base plate and at least covers one side of the turntable part, which is back to the shielding plate.

On the other hand, the invention also provides a refrigerating and freezing device which comprises a box body and an air duct part arranged in the box body, and is characterized by further comprising any one of the air supply devices;

an accommodating cavity is arranged in the air duct part, and the peripheral wall of the accommodating cavity is the peripheral wall of the air supply device; or the peripheral wall of the air supply device is arranged in the peripheral wall of the accommodating cavity, the peripheral wall of the accommodating cavity is provided with a plurality of communication openings, and each communication opening is aligned to one ventilation opening.

Optionally, a storage part is arranged in the box body, the air duct part is positioned at the rear side of the storage part, and a partition plate is arranged in the storage part to divide the storage part into at least two sub-chambers;

at least two air inlet channels and air return channels are arranged in the air channel part; each sub-chamber is communicated with at least one ventilation opening through the air inlet duct correspondingly arranged, and each sub-chamber is communicated with the air return duct;

the box body is internally provided with a cooling space which is positioned at the rear side of the air duct part, an evaporator is arranged in the cooling space, an inlet of the air supply device is communicated with the cooling space, and the return air duct is communicated with the cooling space.

The air supply device and the refrigerating and freezing device of the invention have the transmission device and the reset device, so that each shielding plate can be arranged at an interval with the peripheral wall in the rotating process to have smaller rotating resistance. When the ventilation opening is shielded, the distance between the shielding plate and the peripheral wall is the shortest or the shielding plate is in contact and abutted with the peripheral wall, so that airflow is prevented from entering the shielded ventilation opening from a gap between the shielding plate and the peripheral wall as far as possible, effective shielding is performed, air leakage is reduced and prevented, and air supply efficiency is improved. The intelligent degree of intellectualization is high.

Furthermore, in the air supply device and the refrigeration and freezing device, the tracks of the first surface and the second surface are not consistent due to the special structure of the second bulge. The curve of the second surface is steep, the slope is large, and the stroke is short, namely when the baffle plate is close to the ventilation opening, the baffle plate only needs to rotate by a small angle. Furthermore, when the shielding plate is far away from the ventilation opening, the shielding plate can be separated from the peripheral wall by a safe distance only by rotating a small angle, so that a safe gap is formed. The curve of the first surface is slow, the slope is small, the stroke is long, the smoothness of the rotation process can be guaranteed, and the blockage fault is avoided. Further, the second protrusion may be provided with a plurality of surfaces, such as a third surface and a fourth surface.

Furthermore, in the refrigerating and freezing device, because the air supply device, the partition plate and the independent air inlet and return structure are arranged, the whole storage part such as the freezing compartment is spatially partitioned, and the air duct air path structure is rearranged, so that the independent air supply and the quick refrigeration of each sub-compartment of the freezing compartment are realized, the independent air supply to the area needing refrigeration can be realized, the energy waste is avoided, the compartment or the food is prevented from being cooled slowly, the time for meat passing through an ice crystal zone is short, the juice loss is less, and the fresh-keeping effect is good; and when part of drawers are cooled to the set temperature, the air supply can be closed, so that the energy waste caused by the mode that the freezing chamber is still used for supplying air to the whole chamber is avoided, and the user benefit points of improving the fresh-keeping effect and reducing the energy consumption of the refrigerator are achieved. And the complete machine experiment proves that the effect of the refrigeration and freezing device of the invention reaches the expectation.

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 block diagram of an air supply apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of an air blowing device according to an embodiment of the present invention;

FIG. 3 is a schematic configuration diagram of a shielding plate in the air blowing device according to an embodiment of the present invention;

FIG. 4 is a schematic configuration diagram of a shielding plate in the air blowing device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a partial structure of an air blowing device according to an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of a portion of the structure shown in FIG. 5;

FIG. 7 is a schematic configuration view of a bottom cover of the air blowing device according to one embodiment of the present invention;

fig. 8 is a schematic partial structural view of a refrigeration freezer in accordance with one embodiment of the invention;

fig. 9 is a schematic partial structural view of a refrigeration freezer in accordance with one embodiment of the invention;

fig. 10 is a schematic partial structural view of a refrigeration freezer in accordance with one embodiment of the invention;

FIG. 11 is a schematic view from another perspective of the structure shown in FIG. 10;

fig. 12 is a schematic partial structural view of an air channel portion in a refrigerating and freezing apparatus according to an embodiment of the present invention;

fig. 13 is a schematic configuration view of a rear case of the air channel portion shown in fig. 12.

Detailed Description

Fig. 1 is a schematic structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention; as shown in fig. 1 and referring to fig. 2 to 7, an embodiment of the present invention provides an air supply device 200 for a refrigerating and freezing device, which includes a peripheral wall 202, a shielding portion 210, a transmission device, and a reset device 260.

The peripheral wall 202 is provided with a plurality of ventilation openings 201. The shielding portion 210 is rotatably disposed in the peripheral wall 202 around the axis of the peripheral wall 202, and the shielding portion 210 includes one shielding plate 211 or a plurality of shielding plates 211 rotating synchronously, so that the shielding plate 211 can be controlled to completely shield, partially shield or completely expose each of the ventilation openings 201 when rotating to different rotation positions. The shielding plate 211 is movably arranged along the radial direction of the peripheral wall 202, the transmission device is configured to enable the shielding plate 211 to move towards the peripheral wall 202 at least in the process that the shielding plate 211 rotates from one rotating position to the rotating position for shielding the one or more ventilation openings 201, and when the shielding plate 211 is at the rotating position for shielding the one or more ventilation openings 201, the distance between the shielding plate 211 and the peripheral wall 202 is the nearest or the shielding plate 211 is in contact with and abutted against the peripheral wall 202. The return means 260 is configured to urge the shutter 211 to move towards the middle of the peripheral wall 202, and the return means 260 may be a compression spring.

Because of the transmission and the reset device 260, each shutter 211 can be spaced from the peripheral wall 202 during rotation to have a small rotational resistance. When the ventilation opening 201 is shielded, the distance between the shielding plate 211 and the peripheral wall 202 is the shortest or the shielding plate 211 is in contact with and abutted against the peripheral wall 202, so that airflow is prevented from entering the shielded ventilation opening 201 from the gap between the shielding plate 211 and the peripheral wall 202 as much as possible, effective shielding is performed, air leakage is reduced and prevented, and air supply efficiency is improved.

In some embodiments of the present invention, the transmission device includes a fixed protrusion 221, the shielding plate 211 is provided with a movable protrusion 222, the fixed protrusion 221 is disposed in the peripheral wall 202 and protrudes toward the peripheral wall 202, the movable protrusion 222 protrudes toward a middle portion of the peripheral wall 202, and the movable protrusion 222 cooperates with the fixed protrusion 221 to move the shielding plate 211 toward the peripheral wall 202. In the rotating process of the shielding plate 211, the shielding plate 211 is made to extend and retract by the mutual extrusion of the fixed protrusion 221 and the movable protrusion 222, and the structure is simple, the operation is stable, and the practicability is high.

In some embodiments of the present invention, the fixing protrusion 221 is provided in a plurality of numbers, and is respectively disposed corresponding to a plurality of rotation positions of the shielding plate 211. The number of the movable protrusions 222 is one, and the shielding plates 211 is plural, and the transmission device further includes a link structure configured to move the plural shielding plates 211 synchronously in the radial direction of the peripheral wall 202. In this embodiment, the shutter 211 can be rotated to a plurality of positions, the shutter 211 can be brought into contact with the peripheral wall 202 or the corresponding vent 201 at each position, and the shutter 211 moves synchronously, so that the structure is simple and the control is simple.

In some embodiments of the present invention, the fixing protrusions 221 are arranged in a predetermined number of groups, each group of fixing protrusions 221 including at least one fixing protrusion 221. The preset number is equal to the number of the shielding plates 211. That is, each shielding plate 211 corresponds to one set of the fixing projections 221. Each shielding plate 211 is provided with a movable protrusion 222, and the movable protrusion 222 on each shielding plate 211 is matched with the fixed protrusion 221 in the group of fixed protrusions 221. For example, when one shielding plate 211 is used for shielding one of the ventilation openings 201, it can cooperate with the corresponding fixing protrusion 221, and when the shielding plate 211 is used for shielding the other ventilation opening 201 after being rotated again, the shielding plate 211 can cooperate with the other fixing protrusion 221, so that the arrangement is convenient and the flexibility is strong. Of course, a set of fixing protrusions 221 and another set of fixing protrusions 221 may share some or all of the fixing protrusions 221 to improve flexibility of design.

In some preferred embodiments of the present invention, the surface of the movable protrusion 222 facing the fixed protrusion 221 includes a first surface 223 and a second surface 224 connected to each other to move the shielding plate 211 toward the peripheral wall 202. The ratio between the value of the angle that the shielding plate 211 rotates on the fixing projection 221 through the first surface 223 and the distance that the shielding plate 211 moves in the radial direction of the peripheral wall 202 is a first ratio, the ratio between the value of the angle that the shielding plate 211 rotates on the fixing projection 221 through the second surface 224 and the distance that the shielding plate 211 moves in the radial direction of the peripheral wall 202 is a second ratio, and the first ratio is greater than the second ratio. The specific configuration of the second protrusion, such as the first surface 223 and the second surface 224, does not have a uniform trajectory. The second surface 224 has a steep curve, a large slope and a short stroke, i.e. when the shutter 211 approaches the vent 201, the shutter 211 is rotated by a small angle. The curve of first surface 223 is slow, the slope is little, the stroke is long, can guarantee the smooth and easy degree of rotation process, stops to appear blocking the trouble. Further, the second protrusion may be provided with a plurality of surfaces, such as a third surface and a fourth surface.

Further, the angle value that the shielding plate 211 rotates on the fixing protrusion 221 through the second surface 224 is 1/10 to 1/25 of the angle value that the shielding plate 211 rotates on the fixing protrusion 221 through the first surface 223. The distance by which the shutter 211 is moved in the radial direction of the peripheral wall 202 by the second surface 224 and the fixing projection 221 is 1/6 to 1/2 of the distance by which the shutter 211 is moved in the radial direction of the peripheral wall 202 by the first surface 223 and the fixing projection 221.

The fixed protrusion 221 and the movable protrusion 222 are both symmetrically disposed about a reference plane passing through the rotation axis of the shielding part 210. Through the symmetrical arrangement, when the shielding plate 211 is far away from the ventilation opening 201, the shielding plate 211 can be separated from the peripheral wall 202 by a safe distance only by rotating a small angle, so that a safe gap is formed.

In some embodiments of the present invention, air-moving device 200 further comprises a base 230. The shutter portion 210 also has a turntable portion 240 rotatably mounted to the base 230. The plurality of shielding plates 211 are disposed at one side of the turntable 240 and are spaced apart from each other in the circumferential direction of the turntable 240. Further, one side of the turntable part 240 is provided with a slide rail 241 and a slide hole 242, the corresponding end of the shielding plate 211 is provided with a slide plate 243, the slide plate 243 is mounted on the slide rail 241, the slide plate 243 is provided with a baffle 244 penetrating through the slide hole 241, and a compression spring is arranged on the outer side of the baffle and between the baffle 244 and the turntable part 240 to urge the slide plate to slide inwards.

In some embodiments of the present invention, the air supply device 200 further includes a centrifugal impeller 250, and the centrifugal impeller 250 is mounted on the base 230 and inside the plurality of shielding plates 211 to promote the airflow to the plurality of ventilation openings 201. In other embodiments of the invention, centrifugal rotor 250 is also disposed directly within perimeter wall 202 without base 230.

For control, the blower 200 further includes a motor, a driving gear, and a driven gear 245. The motor is disposed radially outside the turntable unit 240 and is mounted on the base 230. The driving gear is arranged on an output shaft of the motor. The driven gear 245 is mounted to the turntable unit 240 or integrally formed with the turntable unit 240, and is a ring gear, for example, and is engaged with the driving gear.

The base 230 includes a base plate 231, a bottom cover 232, and a retaining ring segment 233 extending from one side of the base plate 231. The centrifugal wind wheel 250 is installed at the other side of the base plate 231. The turntable part 240 is a swivel and is installed at one side of the base plate 231, and each of the shielding plates 211 protrudes out of the other side of the base plate 231. The side of the turntable part 240 facing the base plate 231 is provided with a positioning protrusion 246, and the positioning protrusion 246 is located between two sections of the limiting ring segment 233. The bottom cover 232 covers one side of the base plate 231 and covers at least one side of the turntable unit 240 facing away from the shielding plate 211. The length setting of the retaining ring segments 233 can be set according to specific requirements and determined air supply conditions.

In some embodiments of the present invention, when the peripheral wall 202 extends in the front-rear direction, the peripheral wall 202 may be provided with a drainage hole to facilitate drainage of water in the air supply device 200 and prevent the air supply device 200 from freezing and failing. The base 230 also includes a motor mount and a cross plate. And the crossing plate comprises a first yielding plate, a second yielding plate and a connecting plate. The first rest plate extends from the edge of the base plate 231 in a direction away from the base plate 231. The second yielding plate is parallel to the first yielding plate and is located at the radial outer side of the shielding plate 211. The connecting plate connects the first yielding plate and the second yielding plate and allows one or more shielding plates 211 to enter between the first yielding plate and the second yielding plate. The motor installation part is arranged on one side of the second yielding plate, which deviates from the first yielding plate. The motor is installed in the motor installation department. The bottom cover 232 is also covered on the motor mounting part.

In some embodiments of the present invention, the number of the ventilation openings 201 is three, and the ventilation openings include a first ventilation opening, a second ventilation opening, and a third ventilation opening, which are sequentially arranged. The first ventilation opening is disposed on the upper right side of the peripheral wall 202, and the second ventilation opening is disposed on the lower right side of the peripheral wall 202. The third ventilation opening is provided on the left side of the peripheral wall 202. The shielding plates 211 are three and include a first shielding plate, a second shielding plate and a third shielding plate which are sequentially arranged. The first shutter is configured to completely shield the first vent. The second shielding plate is configured to completely shield the second ventilation opening. The third shielding plate 211 is disposed to completely shield the third ventilation opening.

In some embodiments of the present invention, three ventilation openings 201 are provided, which are a first ventilation opening, a second ventilation opening, and a third ventilation opening, and are sequentially spaced along the circumferential direction of the circumferential wall, and the distance between the middle ventilation opening 201 and the remaining two ventilation openings 201 is equal. The number of the shielding plates 211 is two, two shielding plates 211 are arranged at intervals, one shielding plate 211 is configured to allow it to completely shield one vent hole 201, and the other shielding plate 211 is configured to allow it to completely shield two vent holes 201. At least three ventilation openings 201 can be shielded by another shielding plate 211. One space between the two shutter plates 211 allows one vent 201 to be completely exposed, and the other space allows it to completely expose three vents 201.

In some embodiments of the present invention, other numbers of vents 201 and corresponding numbers of shutters 211 may be used to open one vent 201, open two vents 201 (adjacent or non-adjacent), open three or more vents 201 (adjacent or non-adjacent), and close all vents.

Fig. 8 is a schematic partial structure diagram of a refrigeration and freezing apparatus according to an embodiment of the present invention, and as shown in fig. 8 and referring to fig. 9 to 13, the embodiment of the present invention further provides a refrigeration and freezing apparatus, which includes a box 100, at least one partition 300, and the air supply device 200 in any of the above embodiments, wherein the box 100 has a storage portion and an air duct portion 400 at the rear side of the storage portion. At least one partition 300 is provided in the storage part to partition the storage part into at least two sub-compartments. The air duct portion 400 is provided therein with a receiving chamber, at least two air inlet ducts and a return air duct. The peripheral wall of the housing chamber is the peripheral wall 202 of the air blower 200. In some alternative embodiments, the peripheral wall 202 of the air supply device 200 is disposed within a peripheral wall of the accommodating chamber, which is provided with a plurality of communication ports, each of which is aligned with one of the ventilation openings 201.

The entire storage part such as the freezing compartment is spatially partitioned by providing the partition 300. By providing the air supply device 200, one vent 201 can be opened, two vents 201 can be opened at the same time, and three or more vents 201 can be opened at the same time, so that independent air supply to one sub-chamber, simultaneous air supply to two or more sub-chambers, and the like can be realized. Each sub-compartment is independently returned air through the arrangement of the return air duct.

That is to say, carry out space subregion like freezing compartment through setting up baffle 300 to whole storing portion, wind channel wind path structure rearrangement design, reach the independent air supply of each sub-compartment of freezing compartment and refrigerate fast, can realize only supplying air toward the refrigerated region of demand alone, do not have the energy extravagant, prevent compartment or food cooling slightly slow moreover for take the time shorter through the ice crystal like meat, the juice runs off fewly, fresh-keeping effectual. And when part of drawers are cooled to the set temperature, the air supply can be closed, so that the energy waste caused by the mode that the freezing chamber is still used for supplying air to the whole chamber is avoided, and the user benefit points of improving the fresh-keeping effect and reducing the energy consumption of the refrigerator are achieved. And the complete machine experiment proves that the effect of the refrigeration and freezing device of the invention reaches the expectation.

In some embodiments of the invention, at least two of the sub-compartments are arranged in series in the up-down direction. The return air duct includes at least one first return air duct 411, and the first return air duct 411 extends in the up-down direction. One side of the first air return duct 411 is provided with one or more air inlet ducts, or both sides of the first air return duct 411 are provided with one or more air inlet ducts. Preferably, the first air return duct 411 is disposed in the transverse middle of the duct portion 400, and one or more air inlet ducts are disposed on two sides of the first air return duct 411. The first return air duct 411 is provided to at least return air to the sub-compartments at the lowest side, and to facilitate return air to other sub-compartments.

For example, the accommodating chamber is disposed at an upper portion of the air duct portion 400, the plurality of ventilation openings 201 include a first ventilation opening, a second ventilation opening, and a third ventilation opening, the second ventilation opening and the third ventilation opening are located at both sides of the peripheral wall 202, and the first ventilation opening is located at an upper side of the peripheral wall 202. The air inlet duct includes a first air inlet duct 421, a second air inlet duct 422, and a third air inlet duct 423. The first air intake duct 421 is communicated with the first vent and disposed on the upper portion of the duct portion 400. The second air inlet duct 422 and the third air inlet duct 423 are respectively communicated with the second ventilation opening and the third ventilation opening, and the second air inlet duct 422 and the third air inlet duct 423 are located at two sides of the first air return duct 411.

Specifically, the number of the partition 300 is one, and the number of the sub-compartments is two, and the first compartment and the second compartment are respectively provided, and the first compartment is disposed on the upper side of the second compartment and is communicated with the first air inlet duct 421. The second chamber is communicated with both the second air inlet duct 422 and the third air inlet duct 423. When the storage part is a freezing compartment, the first compartment may be referred to as an upper freezing compartment and the second compartment may be referred to as a lower freezing compartment.

In some embodiments of the present invention, for better return air, the return air duct further includes at least one second return air duct 412, the second return air duct 412 extends in an up-down direction, and one or more inlet air ducts are provided between the second return air duct 412 and the first return air duct 411. In part or all of the sub-compartments, each sub-compartment is communicated with a first return air duct 411 through a correspondingly arranged first return air opening 413 and is communicated with a second return air duct 412 through a correspondingly arranged second return air opening 414, the first return air opening 413 and the second return air opening 414 are positioned at the lower part of the corresponding sub-compartment, and the first return air opening 413 and the second return air opening 414 are arranged at the same height. Further, the first air return ducts 411 are disposed in the transverse middle of the air duct portion 400, and are two. The number of the second return air ducts 412 is two, and the two second return air ducts are disposed on two sides of the two first return air ducts 411. A drainage channel 431 is disposed between the two first air return ducts 411 and is communicated with a drainage hole of the blower 200.

In order to facilitate air return of the lowermost sub-compartment and facilitate structural design of the air path, the air return duct further comprises a third air return duct which is arranged in the middle of the air duct part 400 and extends upwards from the lower end of the air duct part 400, and the lower end of the third air return duct is communicated with the lowermost sub-compartment.

For example, the storage part is a freezing compartment, the air duct part 400 includes an air duct cover 451, a rear case 452, and an air return plate 453 disposed at a lower end of the rear case 452, the air duct cover 451 is installed at a front side of the rear case 452, at least two air inlet ducts and a first air return duct 411 are disposed at a rear side of the air duct cover 451, the air return plate 453 extends downward and forward from a lower end of the rear case 452, and a third air return duct is disposed at a lower side of the air return plate 453. Independent return air is realized inside the air duct part 400, so that the air duct part is easy to realize and does not need to increase the cost.

In some embodiments of the invention, the refrigerated freezing apparatus further comprises an evaporator. A cooling space is provided at the rear side of the air duct portion 400, and an evaporator is provided in the cooling space. The inlet of the receiving chamber communicates with the cooling space. The return air duct is communicated with the cooling space. Specifically, the lower end of the first return air duct 411, the lower end of the second return air duct 412, and the upper end of the third return air duct communicate with the lower portion of the cooling space, and the inlet of the accommodating chamber communicates with the upper portion of the cooling space. The first air inlet duct 421 includes a first section and a second section, the first section extends from the first ventilation opening to one side of the first compartment and extends downward, and at least two air supply openings 424 are provided at the front side of the first section. The second section extends from the first ventilation opening to the other side of the first compartment over the upper side of the accommodating cavity and extends downwards, and at least two air supply openings 425 are arranged on the front side of the second section. At least two air supply outlets 426 are respectively arranged on the front side of the second air inlet duct 422 and the front side of the third air inlet duct 423.

The refrigerator before the refrigerating and freezing device of the invention has a storage drawer with 2 layers or more in the freezing chamber, but the space where the drawer is positioned is communicated, and is not divided by a partition plate 300, and the whole freezing chamber has only 1 temperature sensor. Therefore, when a user places or takes food in or from one or more layers of drawers, the compartment temperature sensor detects temperature fluctuation, the refrigerator main control board controls the freezing air duct to supply air to and refrigerate the whole freezing compartment, and the whole compartment cannot stop refrigerating until the compartment temperature is reduced to the set temperature.

The refrigerating and freezing device of the embodiment of the invention is provided with the partition plate 300 which is used for dividing the whole freezing chamber into at least 2 or more independent space areas, namely sub-chambers, and has certain heat preservation and insulation functions. The number of partitions 300 used may vary depending on the number and location of the desired partitioned spatial regions. The material of the partition 300 may be different, and may be a glass plate member, a plastic plate member, or a member with a foam layer having a certain thickness. The mounting process of the separator 300 may also be different: the refrigerator can be installed before foaming of the refrigerating and freezing device, the partition board 300 and the box body 100 are integrated and can not be detached after foaming, and the sealing performance of the scheme is good. The device can also be installed after foaming and can be detached, and the sealing performance of the scheme is slightly poor. The material and process of the partition 300 may be selected according to actual cost control and user requirements.

This patent scheme all can place a temperature sensor in every independent space region of separating, can be provided with temperature sensor in every interstation promptly, and the control panel has set for specific switching on and shutting down point to every temperature sensor to realize that each space region independently supplies air fast refrigeration as required.

Specifically, by opening/closing the first ventilation opening, it is possible to simultaneously blow air through the air supply opening of the first air intake duct 421 and simultaneously stop air supply, respectively. Similarly, by controlling the simultaneous opening/closing of the second ventilation opening and the third ventilation opening, simultaneous blowing/simultaneous stopping of air supply can be respectively realized at the air supply outlet of the second air supply duct 422 and the air supply outlet of the third air supply duct 423. Therefore, the system scheme of independent air supply of different drawer chambers is realized, and a foundation is laid for rapid cooling as required.

The freezing compartment before the invention only returns air at the return air inlet at the lowest side of the air duct, which is to ensure the temperature uniformity of the whole compartment. In the invention, after the partition plate 300 is used for dividing the whole freezing compartment into a plurality of independent spaces, in order to realize reasonable and reliable air return of each compartment and ensure that the compartments reach effective cooling rate, the first air return duct 411, the second air return duct 412 and the third air return duct are arranged inside the air duct part 400, so that the space of the air duct part 400 is reasonably utilized, and the cost is not increased. And a plurality of air return ports are set, so that the temperature of the compartment is quickly reduced, and the temperature of the compartment is uniform. The sub-chamber at the lowest side still returns air at the air return inlet at the bottom of the air duct. The refrigerating and freezing device also has the advantages that the upper and lower sub-chambers do not taint odor, and a user can place fresh, meat, rare mother and baby and other foods in different regions according to own storage habits.

The freezing compartment of the present invention can have 4 air supply operation modes: the three ventilation openings 201 are fully opened, the three ventilation openings 201 are fully closed, the first ventilation opening is opened, the second ventilation opening and the third ventilation opening are closed, and the first ventilation opening is closed, the second ventilation opening and the third ventilation opening are opened.

The three ventilation openings 201 are in a fully closed working state, so that the temperature fluctuation of the freezing chamber is reduced when the refrigeration and freezing device defrosts, namely, the defrosted hot air is prevented from entering the freezing chamber, and the temperature fluctuation of the freezing chamber is effectively reduced.

The three vents 201 are fully open and the operating conditions are as follows: the user opens the doors of the upper freezing chamber and the lower freezing chamber, the temperature of the chambers fluctuates after the objects are placed or taken, and the cold-storage freezing chamber can supply air to the air outlets of the upper freezing chamber and the lower freezing chamber for refrigeration.

The scene that the second ventilation opening and the third ventilation opening are opened by the first ventilation opening and the working state is closed is as follows: the user opens the door of the upper freezing chamber, and after the object is placed or taken, the temperature of the chamber fluctuates, and the refrigerating and freezing device can independently supply air to the air supply outlet of the upper freezing chamber for refrigeration. In addition, the user can open the doors of the upper freezing chamber and the lower freezing chamber, the temperature of the chambers fluctuates after the object is placed or taken, and the refrigerating and freezing device can supply air to the air outlets of the upper freezing chamber and the lower freezing chamber for refrigeration. After the lower freezing chamber reaches the set temperature, the upper freezing chamber does not reach the set condition, the fully-open state is switched into a working mode that the first ventilation opening, the second ventilation opening and the third ventilation opening are opened, and the operation mode is closed, so that independent air supply and quick refrigeration are realized as required.

The scenes that the second ventilation opening is closed by the first ventilation opening and the working state of the third ventilation opening appears are as follows: the user opens the door of the lower freezing chamber, and after the object is placed or taken, the temperature of the chamber fluctuates, and the refrigerating and freezing device can independently supply air to the air supply outlet of the lower freezing chamber for refrigeration. In addition, the user can open the doors of the upper freezing chamber and the lower freezing chamber, the temperature of the chambers fluctuates after the user places or takes objects, and the refrigerating and freezing device can supply air to the air outlets of the upper freezing chamber and the lower freezing chamber for refrigeration. When the upper freezing chamber reaches the set temperature and the lower freezing chamber does not reach the set condition, the fully-open state is switched to a working mode that the first ventilation opening closes the second ventilation opening and the third ventilation opening, so that independent air supply and quick refrigeration are realized as required.

In conclusion, the refrigerating and freezing device provided by the invention can realize quick refrigeration of the freezing chamber, thereby achieving a better fresh-keeping effect and reducing the energy consumption of the refrigerating and freezing device.

In some embodiments of the present invention, the refrigerator body 100 defines therein a refrigerating compartment, a temperature-changing compartment, and the like. The number and function of the compartments for storing objects can be configured according to the requirements in advance. Further, the preservation temperature of the refrigeration chamber can be 0-9 ℃, or can be 2-7 ℃. The storage temperature of the freezing chamber can be-22 to-14 ℃ or-20 to-16 ℃. The freezer compartment may be disposed below the refrigerator compartment, and in some embodiments, the freezer compartment is disposed on one or an upper side of the refrigerator compartment. The temperature-changing chamber can be arranged between the freezing chamber and the refrigerating chamber. The temperature-changing chamber can be adjusted according to the requirement to store proper food or be used as a fresh-keeping storage chamber. The freezer compartment is partitioned by a partition 300 to form each sub-compartment in which a drawer 500 may be disposed. In some other embodiments of the present invention, the storage portion may also be a refrigerating compartment or a temperature-changing compartment.

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. An air supply device for a refrigerating and freezing device comprises a peripheral wall, wherein a plurality of ventilation openings are arranged on the peripheral wall, and the air supply device is characterized by also comprising a shielding part, a transmission device and a resetting device;

the reset device is configured to urge the shutter to move toward the middle of the peripheral wall.

2. The blowing device according to claim 1, wherein the transmission device includes a fixed protrusion, the shielding plate is provided with a movable protrusion, the fixed protrusion is disposed in the peripheral wall and protrudes toward the peripheral wall, the movable protrusion protrudes toward a middle portion of the peripheral wall, and the movable protrusion cooperates with the fixed protrusion to move the shielding plate toward the peripheral wall.

3. The air supply arrangement of claim 2,

the number of the fixing bulges is multiple, and the fixing bulges are respectively arranged corresponding to the multiple rotating positions of the shielding plate;

4. The air supply arrangement of claim 2,

the fixing protrusions are arranged in a preset number of groups, and each group of fixing protrusions comprises at least one fixing protrusion; the preset number is equal to the number of the shielding plates;

5. The blowing device of claim 2,

the surface of the movable projection facing the fixed projection includes a first surface and a second surface connected to each other to move the shielding plate toward the peripheral wall;

6. The air supply arrangement of claim 5,

the angle value that the shielding plate rotates on the fixing protrusion through the second surface is 1/10 to 1/25 of the angle value that the shielding plate rotates on the fixing protrusion through the first surface;

7. The air supply apparatus according to claim 2 or 5,

the fixed protrusion and the movable protrusion are both disposed symmetrically about a reference plane passing through the rotation axis of the shielding portion.

8. The air supply apparatus of claim 1, further comprising:

the driving gear is arranged on an output shaft of the motor; and

the turntable part is a swivel and is arranged on one side of the base plate, and each shielding plate extends out of the other side of the base plate; one side of the turntable part, which faces the base plate, is provided with a positioning bulge, and the positioning bulge is positioned between two sections of the limiting ring section;

9. A refrigerating and freezing device comprising a box body and an air duct portion arranged in the box body, characterized by further comprising an air supply device according to any one of claims 1 to 8;

an accommodating cavity is arranged in the air duct part, and the peripheral wall of the accommodating cavity is the peripheral wall of the air supply device; or the peripheral wall of the air supply device is arranged in the peripheral wall of the accommodating cavity, the peripheral wall of the accommodating cavity is provided with a plurality of communication ports, and each communication port is aligned with one ventilation opening.

10. A refrigerator-freezer according to claim 9,

the storage part is arranged in the box body, the air duct part is positioned at the rear side of the storage part, and a partition plate is arranged in the storage part to divide the storage part into at least two sub-chambers;