CN214536997U - Refrigerating and freezing device - Google Patents

Abstract

The utility model provides a cold-stored refrigeration device. The air-conditioning box comprises a box body, at least one partition plate and a branch air supply device, wherein the box body is internally provided with a storage part and an air duct part positioned at the rear side of the storage part; at least one partition board is arranged in the storage part to divide the storage part into at least two sub-chambers; the air duct part is internally provided with an accommodating cavity, at least two air inlet ducts and an air return duct; a plurality of ventilation openings are arranged on the peripheral wall of the accommodating cavity; the branch air supply device is arranged in the accommodating cavity; each sub-compartment is communicated with the ventilation opening through the air inlet duct correspondingly arranged, and each sub-compartment is communicated with the air return duct. Carry out space partition like freezing room to whole storing portion, wind channel wind path structure rearrangement design can realize only supplying air toward the refrigerated region of demand alone, does not have the energy extravagant, prevents room or food cooling slightly slow moreover for it is short to take the time through the ice crystal like meat, and the juice runs off fewly, and fresh-keeping effect is good.

Description

Refrigerating and freezing device

Technical Field

The utility model relates to a household electrical appliances refrigeration storing technical field especially relates to a cold-stored refrigeration 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 freezing storage chamber is provided with more than two layers of storage drawers, and the whole freezing chamber is communicated and has no partition. When a user places or takes food in or from a certain layer or multiple layers of drawers, the compartment sensor detects temperature fluctuation, the main control board of the refrigerator 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 the 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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cold-stored refrigerating plant to realize freezing room and independently supply air as required and refrigerate fast after the user opens the door and places/take food, can promote the fresh-keeping effect of refrigerator, reduce the refrigerator energy consumption.

The refrigeration and freezing device comprises a box body, wherein a storage part and an air channel part positioned at the rear side of the storage part are arranged in the box body, and the refrigeration and freezing device also comprises at least one partition plate and a shunt air supply device;

at least one partition plate is arranged in the storage part to divide the storage part into at least two sub-chambers;

the air duct part is internally provided with an accommodating cavity, at least two air inlet ducts and an air return duct; a plurality of ventilation openings are arranged on the peripheral wall of the accommodating cavity;

the branch air supply device is arranged in the accommodating cavity and is provided with a shielding part which can be arranged in a rotating way around the axis of the accommodating cavity, and the shielding part is configured to controllably shield the plurality of ventilation openings so as to adjust the air inlet areas of the ventilation openings;

each sub-compartment is communicated with at least one ventilation opening through the air inlet duct which is correspondingly arranged, and each sub-compartment is communicated with the air return duct.

Optionally, at least two of the sub-chambers are sequentially arranged along the up-down direction;

the air return duct comprises at least one first air return duct, and the first air return duct extends along the up-down direction;

one side of the first air return duct is provided with one or more air inlet ducts, or both sides of the first air return duct are provided with one or more air inlet ducts.

Optionally, the accommodating cavity is arranged at the upper part of the air duct part, the plurality of ventilation openings comprise a first ventilation opening, a second ventilation opening and a third ventilation opening, the second ventilation opening and the third ventilation opening are positioned at two sides of the peripheral wall, and the first ventilation opening is positioned at the upper side of the peripheral wall;

the air inlet duct comprises a first air inlet duct, a second air inlet duct and a third air inlet duct; the first air inlet duct is communicated with the first vent and is arranged at the upper part of the duct part; the second air inlet duct and the third air inlet duct are respectively communicated with the second ventilation opening and the third ventilation opening, and the second air inlet duct and the third air inlet duct are positioned on two sides of the first return air duct.

Optionally, the number of the partition plates is one, the number of the sub-chambers is two, the two sub-chambers are respectively a first chamber and a second chamber, and the first chamber is arranged on the upper side of the second chamber and communicated with the first air inlet duct; the second chamber is communicated with the second air inlet duct and the third air inlet duct.

Optionally, the return air duct further includes at least one second return air duct, the second return air duct extends in the up-down direction, and one or more of the intake air ducts are provided between the second return air duct and the first return air duct;

in part or all of the sub-chambers, each sub-chamber is communicated with the first return air duct through a correspondingly arranged first return air inlet and is communicated with the second return air duct through a correspondingly arranged second return air inlet, the first return air inlet and the second return air inlet are positioned at the lower parts of the corresponding sub-chambers, and the first return air inlet and the second return air inlet are arranged at the same height.

Optionally, the number of the first air return ducts is two, and the first air return ducts are arranged in the transverse middle of the air duct portion; the two second air return channels are arranged on two sides of the two first air return channels;

the air return duct also comprises a third air return duct which is arranged in the middle of the duct part and extends upwards from the lower end of the duct part, and the lower end of the third air return duct is communicated with the lowermost sub-compartment.

Optionally, the refrigeration freezer further comprises an evaporator;

a cooling space is arranged at the rear side of the air duct part, and the evaporator is arranged in the cooling space; the inlet of the accommodating cavity is communicated with the cooling space, and the return air duct is communicated with the cooling space;

the first air inlet duct comprises a first section and a second section, the first section extends from the first ventilation opening to one side of the first chamber and extends downwards, and at least two air supply openings are formed in 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 are formed in the front side of the second section;

and the front side of the second air inlet duct and the front side of the third air inlet duct are both provided with at least two air supply outlets.

Optionally, the storage part is a freezing compartment, the air duct part comprises an air duct cover plate, a rear shell and an air return plate arranged at the lower end of the rear shell, and the air duct cover plate is mounted on the front side of the rear shell; at least two air inlet duct with first return air duct set up in the wind channel apron with between the backshell, the return air board is followed the lower extreme of backshell is downward and extend forward, third return air duct set up in the downside of return air board.

Optionally, the shielding part comprises a shielding plate or a plurality of shielding plates rotating synchronously, so that the shielding plate can be controlled to completely shield, partially shield or completely expose each ventilation opening when rotating to different rotating positions;

the branch air supply device also comprises a base arranged in the accommodating cavity, a plurality of fixed bulges are arranged on the base, the shielding plate is movably arranged along the radial direction of the accommodating cavity, movable bulges are arranged on the shielding plate, so that the shielding plate can move towards the peripheral wall of the accommodating cavity 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 rotating position for shielding one or more ventilation openings is arranged, the shielding plate is closest to or in contact with the peripheral wall of the accommodating cavity; the shielding plate moves towards the middle of the containing cavity through a return spring.

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

the surface of the movable protrusion facing the fixed protrusion comprises a first half part and a second half part which are symmetrically arranged, and the first half part at least comprises a first surface and a second surface which are sequentially connected;

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

The utility model discloses an among the cold-stored refrigerating plant, because have air supply arrangement along separate routes, baffle and independent air inlet return air structure, carry out space subregion to whole storing portion such as freezing compartment, the air duct wind path structure is overall arrangement design again, reach each subchamber independent air supply of freezing compartment and refrigerate fast, can realize only supplying air to the refrigerated region of demand alone, there is not the energy waste, and prevent compartment or food cooling slightly slow, make for example meat pass through the ice crystal and take the time shorter, the juice runs off for a short time, 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. Just the whole machine experiment verifies that the effect has reached expectation in the cold-stored refrigeration device of the utility model.

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 present invention will be described in detail hereinafter, by way of illustration and not by way of 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 partial structural view of a refrigeration and freezing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic partial structural view of a refrigeration and freezing apparatus according to an embodiment of the present invention;

fig. 3 is a schematic partial structural view of a refrigeration and freezing apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view from another perspective of the structure shown in FIG. 3;

fig. 5 is a schematic partial structural view of an air duct portion in a refrigerating and freezing apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a rear shell of the air channel portion shown in FIG. 5;

fig. 7 is a schematic structural view of a branching air supply device in a refrigerating and freezing apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic view of a partial structure of the branched blowing device shown in FIG. 7;

FIG. 9 is a schematic configuration view of a shielding plate in the branching blowing device shown in FIG. 7;

FIG. 10 is a schematic configuration view of a shielding plate in the branching blowing device shown in FIG. 7;

FIG. 11 is a schematic view of a partial structure of the branched blowing device shown in FIG. 7;

FIG. 12 is an enlarged schematic view of a portion of the structure shown in FIG. 11;

FIG. 13 is a schematic structural view of a bottom cover of the branching blowing device shown in FIG. 7;

fig. 14 is a schematic configuration diagram of a branching air blowing device in a refrigeration and freezing apparatus according to an embodiment of the present invention.

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 14, an embodiment of the present invention provides a refrigeration and freezing apparatus, which includes a box 100, at least one partition 300, and a branch air supply device 200, 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. An accommodating cavity, at least two air inlet ducts and an air return duct are arranged in the air duct portion 400. A plurality of ventilation openings 201 are provided in the peripheral wall 202 of the housing chamber.

The branch air supply device 200 is arranged in the accommodating cavity, the branch air supply device 200 is provided with a shielding part 210 which is rotatably arranged around the axis of the accommodating cavity, and the shielding part 210 is configured to controllably shield the plurality of ventilation openings 201 so as to adjust the air inlet areas of the plurality of ventilation openings 201. Each sub-compartment is communicated with at least one vent 201 through a correspondingly arranged air inlet duct, and each sub-compartment is communicated with a return air duct.

The entire storage part such as a freezing compartment is spatially partitioned by providing the partition 300. By providing the branch 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 of one sub-chamber, simultaneous air supply of 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, the partition plate 300 is arranged to spatially partition the whole storage part such as the freezing compartment, and the air duct air path structure is rearranged, so that independent air supply and quick refrigeration of each sub-compartment of the freezing compartment are realized, air can be supplied to a region requiring refrigeration independently, energy waste is avoided, the compartment or 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. Just the whole machine experiment verifies that the effect has reached expectation in the cold-stored refrigeration device of the utility model.

In some embodiments of the present invention, at least two sub-compartments are sequentially arranged in an 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 returning air, the return air duct further includes at least one second return air duct 412, the second return air duct 412 extends in the up-down direction, and one or more intake 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 arranged between the two first return air ducts 411.

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 present invention, the refrigeration and freezing apparatus further comprises an evaporator in some embodiments of the present invention. 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 arranged on the front side of the second air inlet duct 422 and the front side of the third air inlet duct 423.

In some embodiments of the present invention, as shown in fig. 7 and 14, 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 ventilation opening when rotating to different rotation positions.

The utility model discloses the freezing room of refrigerator before cold-stored freezing device has 2 layers and above storage drawers, but the drawer place space is communicating, does not carry out the subregion to baffle 300, and only 1 temperature sensor in whole freezing room. 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 utility model discloses cold-stored refrigerating plant has baffle 300, and the effect is separated into at least 2 and above independent space regions with whole freezing room, and the room is separated to the son promptly to can play certain heat preservation thermal-insulated effect. 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 utility model discloses freezing room before only carries out the return air at the air return inlet of wind channel downside, and this is in order to guarantee whole room temperature homogeneity. The utility model discloses after using baffle 300 to separate into a plurality of independent spaces with whole freezing room, in order to realize that every room is reasonable, reliable return air, guarantee that the room reaches effectual cooling rate, through setting up first return air wind channel 411, second return air wind channel 412 and third return air wind channel, set up in the inside of wind channel portion 400, the rational utilization space of wind channel portion 400 itself, not increase the cost. 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 utility model discloses a cold-stored advantage that refrigerating plant still possessed is that upper and lower subchamber is not tainted with the flavor, and the user can place food subregion such as giving birth to bright, meat and treasure mother and infant according to the storage custom of oneself.

The utility model discloses a freezing room can have 4 air supply mode: 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 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. 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.

To sum up, the utility model discloses a cold-stored refrigerating plant independently divides the room space again, and the wind path in whole wind channel is overall arrangement again, and the system scheme of the independent air supply of subregion, independent return air to and independent temperature sensor signal acquisition, all set for best control logic to the use scene of difference, could realize freezing quick refrigeration of room from this, thereby reach better fresh-keeping effect, reduce cold-stored refrigerating plant's energy consumption.

In some embodiments of the present invention, the air supply device 200 further includes a base 230 disposed in the accommodating chamber, a plurality of fixing protrusions 221 are disposed on the base 230, the shielding plate 211 is movably disposed along a radial direction of the accommodating chamber, and a movable protrusion 222 is disposed on the shielding plate 211, so that at least when the shielding plate 211 rotates from a rotating position to a rotating position for shielding one or more vents, the shielding plate 211 moves toward a peripheral wall of the accommodating chamber, and when the rotating position for shielding one or more vents is located, a distance between the shielding plate 211 and the peripheral wall of the accommodating chamber is closest or contacts to abut against the peripheral wall of the accommodating chamber. The shielding plate 211 is moved toward the middle of the receiving chamber by the return spring 260.

Because of the fixed projection, the movable projection, and the return spring means 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 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 protrusions 221 are plural and respectively correspond to a plurality of rotation positions of the shielding plate 211. The movable protrusion 222 is one, and the shielding plate 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 is rotatable to a plurality of positions, the shutter 211 is brought into contact with the peripheral wall 202 or the corresponding vent 201 at each position, and the shutter 211 is moved in synchronization, which is simple in structure and easy to control.

In some embodiments of the present invention, the fixing protrusions 221 are arranged in a predetermined number of groups, and each group of fixing protrusions 221 includes 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 be engaged with the corresponding fixing protrusion 221, and when the shielding plate 211 is used for shielding the other ventilation opening 201 after rotating again, the shielding plate 211 can be engaged 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 1/15 to 1/35 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.

In some embodiments of the present invention, 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 portion 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, the shielding portion 210 further 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 branched air supply device 200 further includes a centrifugal impeller 250, and the centrifugal impeller 250 is installed on the base 230 and inside the plurality of shielding plates 211 to promote the air flow to the plurality of ventilation openings 201. In other embodiments of the present invention, the centrifugal rotor 250 is also disposed directly within the perimeter wall 202 without the base 230.

For control, the branched 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, the peripheral wall 202 extends in the front-rear direction, and the peripheral wall 202 may be provided with a drainage hole, which is communicated with the drainage channel 431, so as to facilitate drainage of water in the branched air supply device 200 and prevent the branched air supply device 200 from being frozen and disabled. 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, as shown in fig. 14, the number of the ventilation openings 201 is three, and the three ventilation openings are respectively a first ventilation opening, a second ventilation opening, and a third ventilation opening which are sequentially arranged. The number of the shielding plates 211 is three, and the shielding plates are respectively 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, the number of the ventilation openings 201 is three, 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 the ventilation openings 201 and the corresponding numbers of the shielding plates 211 can be adopted, so as to open one ventilation opening 201, simultaneously open two (adjacent or non-adjacent) ventilation openings 201, simultaneously open three or more (adjacent or non-adjacent) ventilation openings 201, completely close and so on, and at least satisfy the present invention, which has 4 air supply working modes on the freezing compartment.

In some embodiments of the present invention, as shown in fig. 14, the branching air supply device 200 further includes a housing 270, the housing 270 is disposed in the accommodating cavity, the peripheral wall of the housing 270 is provided with a plurality of communication ports 271, and each communication port 271 is aligned with one of the ventilation openings 201. The housing 270 has an air inlet 280 at one end.

In some embodiments of the present invention, the box 100 defines a refrigerating chamber, a temperature-changing chamber, 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 partitions 300 to form a drawer 500 within each sub-compartment. In some other embodiments of the present invention, the storage portion may also be a refrigerating chamber or a temperature-changing chamber.

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

Claims (10)

1. A refrigerating and freezing device comprises a box body, wherein a storage part and an air duct part positioned at the rear side of the storage part are arranged in the box body;

at least one partition plate is arranged in the storage part to divide the storage part into at least two sub-chambers;

the air duct part is internally provided with an accommodating cavity, at least two air inlet ducts and an air return duct; a plurality of ventilation openings are arranged on the peripheral wall of the accommodating cavity;

the branch air supply device is arranged in the accommodating cavity and is provided with a shielding part which can be arranged in a rotating way around the axis of the accommodating cavity, and the shielding part is configured to controllably shield the plurality of ventilation openings so as to adjust the air inlet areas of the ventilation openings;

each sub-compartment is communicated with at least one ventilation opening through the air inlet duct which is correspondingly arranged, and each sub-compartment is communicated with the air return duct.

2. A refrigerator-freezer according to claim 1,

at least two sub-chambers are sequentially arranged along the up-down direction;

the air return duct comprises at least one first air return duct, and the first air return duct extends along the up-down direction;

one side of the first air return duct is provided with one or more air inlet ducts, or both sides of the first air return duct are provided with one or more air inlet ducts.

3. A refrigerator-freezer according to claim 2,

the accommodating cavity is arranged at the upper part of the air duct part, the plurality of ventilation openings comprise a first ventilation opening, a second ventilation opening and a third ventilation opening, the second ventilation opening and the third ventilation opening are positioned at two sides of the peripheral wall, and the first ventilation opening is positioned at the upper side of the peripheral wall;

the air inlet duct comprises a first air inlet duct, a second air inlet duct and a third air inlet duct; the first air inlet duct is communicated with the first vent and is arranged at the upper part of the duct part; the second air inlet duct and the third air inlet duct are respectively communicated with the second ventilation opening and the third ventilation opening, and the second air inlet duct and the third air inlet duct are positioned on two sides of the first return air duct.

4. A refrigerator-freezer according to claim 3,

the number of the partition plates is one, the number of the sub-chambers is two, the two sub-chambers are respectively a first chamber and a second chamber, and the first chamber is arranged on the upper side of the second chamber and communicated with the first air inlet duct; the second chamber is communicated with the second air inlet duct and the third air inlet duct.

5. A refrigerator-freezer according to claim 2,

the air return duct also comprises at least one second air return duct, the second air return duct extends along the up-down direction, and one or more air inlet ducts are arranged between the second air return duct and the first air return duct;

in part or all of the sub-chambers, each sub-chamber is communicated with the first return air duct through a correspondingly arranged first return air inlet and is communicated with the second return air duct through a correspondingly arranged second return air inlet, the first return air inlet and the second return air inlet are positioned at the lower parts of the corresponding sub-chambers, and the first return air inlet and the second return air inlet are arranged at the same height.

6. A refrigerator-freezer according to claim 5,

the first air return ducts are arranged in the transverse middle of the air duct part, and the number of the first air return ducts is two; the two second air return channels are arranged on two sides of the two first air return channels;

the air return duct also comprises a third air return duct which is arranged in the middle of the duct part and extends upwards from the lower end of the duct part, and the lower end of the third air return duct is communicated with the lowermost sub-compartment.

7. A refrigerator-freezer according to claim 4, further comprising an evaporator;

a cooling space is arranged at the rear side of the air duct part, and the evaporator is arranged in the cooling space; the inlet of the accommodating cavity is communicated with the cooling space, and the return air duct is communicated with the cooling space;

the first air inlet duct comprises a first section and a second section, the first section extends from the first ventilation opening to one side of the first chamber and extends downwards, and at least two air supply openings are formed in 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 are formed in the front side of the second section;

and the front side of the second air inlet duct and the front side of the third air inlet duct are both provided with at least two air supply outlets.

8. A refrigerator-freezer according to claim 6,

the storage part is a freezing chamber, the air duct part comprises an air duct cover plate, a rear shell and an air return plate arranged at the lower end of the rear shell, and the air duct cover plate is arranged on the front side of the rear shell; at least two air inlet duct with first return air duct set up in the wind channel apron with between the backshell, the return air board is followed the lower extreme of backshell is downward and extend forward, third return air duct set up in the downside of return air board.

9. A refrigerator-freezer according to claim 1,

the shielding part comprises a shielding plate or a plurality of shielding plates which rotate synchronously, so that the shielding plate can be controlled to completely shield, partially shield or completely expose each ventilation opening when the shielding plate rotates to different rotating positions;

the branch air supply device also comprises a base arranged in the accommodating cavity, a plurality of fixed bulges are arranged on the base, the shielding plate is movably arranged along the radial direction of the accommodating cavity, movable bulges are arranged on the shielding plate, so that the shielding plate can move towards the peripheral wall of the accommodating cavity 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 rotating position for shielding one or more ventilation openings is arranged, the shielding plate is closest to or in contact with the peripheral wall of the accommodating cavity; the shielding plate moves towards the middle of the containing cavity through a return spring.

10. A refrigerator-freezer according to claim 9,

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

the surface of the movable protrusion facing the fixed protrusion comprises a first half part and a second half part which are symmetrically arranged, and the first half part at least comprises a first surface and a second surface which are sequentially connected;

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

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