CN219346897U - Air duct assembly for air-cooled refrigerator and air-cooled refrigerator - Google Patents

Abstract

The utility model relates to an air duct assembly for an air-cooled refrigerator and the air-cooled refrigerator. An air supply channel for circulating cooling air flow is limited in the air channel assembly, and an air supply opening is formed in the air channel assembly and is communicated with the air supply channel and the storage compartment, so that cooling air in the air supply channel is allowed to flow into the storage compartment through the air supply opening. The air supply port comprises a forward sub-port facing forwards and a vertical sub-port facing upwards or downwards, a baffle is arranged at the vertical sub-port and is configured to selectively open or shield the vertical sub-port. When the food material in the storage room blocks the forward sub-air opening, the air flow pressure at the air supply opening is increased, the baffle plate can be in an opened state for opening the vertical sub-air opening, and the cooling air flow in the air supply air duct can be switched to be sent into the storage room from the vertical sub-air opening, so that the phenomenon that the whole air supply opening is blocked by the food material is effectively avoided, and the fresh-keeping effect of the storage room is improved.

Description

Air duct assembly for air-cooled refrigerator and air-cooled refrigerator

Technical Field

The utility model relates to a refrigeration technology, in particular to an air duct assembly for an air-cooled refrigerator and the air-cooled refrigerator.

Background

The design of the refrigerator has high energy efficiency and good fresh-keeping effect besides striving to seek attractive appearance and clean convenience, and becomes the main stream pursued by the household appliances nowadays. The refrigerator can be divided into two refrigeration modes of direct cooling and air cooling, and the air cooling refrigerator is clean and frostless and is popular in the market. The air-cooled refrigerator is sent to the whole compartment by the cool air blown out from the evaporator, and the optimal design of the air path is particularly important for the fresh keeping of the whole refrigerator.

The existing air-cooled refrigerator is provided with corresponding air supply channels according to the structure in the refrigerator, so that the air supply in the refrigerator is uniform. In the actual use process of users, when a large amount of foods are stored, the possibility that the food blocks the air outlet exists, so that the blocked air outlet is not smooth, the temperature of the food is not reduced, and the fresh-keeping effect of the refrigerator is affected.

Disclosure of Invention

An object of a first aspect of the present utility model is to overcome at least one of the drawbacks of the prior art by providing an air duct assembly for an air cooled refrigerator that avoids blockage of the air supply opening.

It is a further object of the first aspect of the present utility model to simplify the construction of the duct assembly and reduce its cost.

An object of a second aspect of the present utility model is to provide an air-cooled refrigerator having the above-described air duct assembly.

According to a first aspect of the present utility model, there is provided an air duct assembly for an air-cooled refrigerator, disposed at a rear side of a storage compartment of the air-cooled refrigerator, for delivering a cooling air flow to the storage compartment;

an air supply channel for circulating cooling air flow is limited in the air channel assembly, the air channel assembly is provided with an air supply port, and the air supply port is communicated with the air supply channel and the storage compartment so as to allow cooling air in the air supply channel to flow into the storage compartment through the air supply port; wherein the method comprises the steps of

The air supply port comprises a forward sub-port facing forwards and a vertical sub-port facing upwards or downwards, wherein a baffle plate is arranged at the vertical sub-port and is configured to selectively open or shield the vertical sub-port.

Optionally, the air supply port comprises a cylinder body protruding forwards from the front side of the air duct assembly towards the storage compartment; and is also provided with

The forward sub-air opening is arranged on the front end face of the cylinder body.

Optionally, the vertical sub-air opening is formed in the top surface of the cylinder body and faces upwards; and is also provided with

The baffle is configured to be pivotally connected to the top surface of the cylinder to pivot upwardly under the pressure of the air flow in the cylinder to open the vertical sub-tuyere and to pivot downwardly under its own weight to shield the vertical sub-tuyere.

Optionally, a limiting piece is arranged above the cylinder, and the limiting piece is configured to abut against the baffle after the baffle is pivoted upwards to a preset angle so as to prevent the baffle from continuing to pivot upwards.

Optionally, the baffle has a pivot end for connection with the top surface of the barrel and a free end opposite the pivot end; and is also provided with

The air supply outlet further comprises a spring, one end of the spring is connected with the free end of the baffle, and the other end of the spring is connected with the position, matched with the free end of the baffle, of the vertical sub-air outlet.

Optionally, the rear end of the baffle is hinged to the top surface of the cylinder by a hinge assembly to open the vertical sub-tuyere toward the front upper side when the baffle is pivoted upward.

Optionally, the baffle has a pivot end for connection with the top surface of the barrel and a free end opposite the pivot end;

the free end of the baffle is provided with a first magnetic attraction piece, a second magnetic attraction piece is arranged at the position of the vertical sub-air opening matched with the free end of the baffle, and the first magnetic attraction piece and the second magnetic attraction piece are configured to be attracted mutually in a magnetic mode.

Optionally, the first magnetic attraction piece is an iron sheet coated outside the free end of the baffle; and is also provided with

The second magnetic attraction piece is a magnet fixed at the position of the vertical sub-air opening, which is matched with the free end of the baffle plate.

Optionally, the vertical sub-air opening is formed in the bottom surface of the cylinder body and faces downwards; and is also provided with

The baffle has a pivot end for pivotable connection with the bottom surface of the barrel and a free end opposite the pivot end; an elastic piece is arranged between the free end and the bottom surface of the cylinder body, the deformation retaining capacity of the elastic piece is larger than the gravity of the baffle plate, the elastic piece is configured to stretch when the sum of the airflow pressure born by the baffle plate and the gravity of the baffle plate is larger than the deformation retaining capacity of the elastic piece so that the baffle plate pivots downwards to open the vertical sub-air opening, and retract when the sum of the airflow pressure born by the baffle plate and the gravity of the baffle plate is smaller than the deformation retaining capacity of the elastic piece so that the baffle plate pivots upwards to shield the vertical sub-air opening.

According to a second aspect of the present utility model, there is also provided an air-cooled refrigerator, comprising:

a case defining a storage compartment therein for storing articles; and

the air duct assembly according to any one of the above aspects, wherein the air duct assembly is disposed at a rear side of the storage compartment, and is configured to convey cooling air flow to the storage compartment.

The air duct assembly for the air-cooled refrigerator is internally limited with an air supply duct, and the air duct assembly is provided with an air supply opening for conveying cooling air flow in the air supply duct to the storage compartment. In particular, the air supply outlet not only comprises a forward sub-outlet facing forward, but also comprises a vertical sub-outlet facing upward or downward, and the vertical sub-outlet is not easy to be blocked by food materials because of facing upward or downward. And the vertical sub-air opening is also provided with a baffle plate which selectively opens or shields the vertical sub-air opening. When food materials in the storage compartment are less or the storage compartment is reasonable, the front sub-air opening is not plugged, the baffle plate can be in a closed state for shielding the vertical sub-air opening, and cooling air flow in the air supply duct is all sent into the storage compartment through the front sub-air opening, so that the cooling air flow is ensured to have an optimal air supply path. When the food in the storage room is more or the discharge is unreasonable and the forward sub-air opening is blocked, the air flow pressure at the air supply opening is increased, the baffle plate can be in an open state of opening the vertical sub-air opening, and the cooling air flow in the air supply duct can be switched to be sent into the storage room from the vertical sub-air opening, so that the phenomenon that the whole air supply opening is blocked by the food is effectively avoided, and the fresh-keeping effect of the storage room is improved.

Further, the air supply port comprises a cylinder body protruding forwards, the forward sub-port is formed in the front end face of the cylinder body, the vertical sub-port is formed in the top face of the cylinder body and faces upwards, and the baffle is connected to the top face of the cylinder body in a pivotable mode. After the forward sub-tuyere is blocked, the airflow pressure in the cylinder body is gradually increased, and the baffle automatically pivots upwards under the action of the airflow pressure to open the vertical sub-tuyere. After the forward sub-tuyere is opened again, the airflow pressure in the cylinder body is gradually reduced, and the baffle plate can downwards pivot under the action of self gravity to shield the vertical sub-tuyere, namely, the baffle plate can realize state switching under the action of the airflow pressure and the self gravity, special control is not needed, and the structure is particularly simple, so that the structure of the air duct assembly is simplified, and the cost is reduced.

The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic block diagram of an air duct assembly for an air-cooled refrigerator according to a first embodiment of the present utility model;

FIG. 2 is a schematic enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of a portion of a duct assembly according to a second embodiment of the present utility model;

FIG. 4 is a schematic view of a portion of a duct assembly according to a third embodiment of the present utility model;

FIG. 5 is a schematic top view of a duct assembly according to one embodiment of the utility model;

FIG. 6 is a schematic view of a portion of a duct assembly according to a fourth embodiment of the present utility model;

FIG. 7 is a schematic view of a portion of a duct assembly according to a fifth embodiment of the utility model;

fig. 8 is a schematic structural view of an air-cooled refrigerator according to an embodiment of the present utility model.

Detailed Description

The utility model firstly provides an air duct assembly for an air-cooled refrigerator, which is arranged at the rear side of a storage compartment of the air-cooled refrigerator and is used for conveying cooling air flow to the storage compartment.

Fig. 1 is a schematic structural view of an air duct assembly for an air-cooled refrigerator according to a first embodiment of the present utility model, and fig. 2 is a schematic enlarged view of a portion a of fig. 1. Referring to fig. 1 and 2, an air supply duct 21 for circulating cooling air is defined in the air duct assembly 20, and an air supply port 22 is provided in the air duct assembly 20, and the air supply port 22 communicates with the air supply duct 21 and a storage compartment of the refrigerator to allow the cooling air in the air supply duct 21 to flow into the storage compartment through the air supply port 22, thereby refrigerating the storage compartment.

In particular, the air supply opening 22 includes a forward-facing sub-opening 221, and an upward-facing or downward-facing vertical sub-opening 222, with a baffle 223 provided at the vertical sub-opening 222, the baffle 223 being configured to selectively open or shield the vertical sub-opening 222. That is, the barrier 223 has an open state of opening the vertical sub-tuyere 222 and a closed state of shielding the vertical sub-tuyere 222.

An air supply duct 21 is defined in the air duct assembly 20 for the air-cooled refrigerator, and an air supply opening 22 for conveying cooling air flow in the air supply duct 21 to the storage compartment is formed in the air duct assembly 22. In particular, the air supply port 22 includes not only the forward-facing sub-port 221, but also the upward-facing or downward-facing vertical sub-port 222, and is not easily blocked by the food material because the vertical sub-port 222 faces upward or downward. And, a baffle plate 223 selectively opening or shielding the vertical sub-tuyere is further provided at the vertical sub-tuyere 222. When the food in the storage compartment is less or the forward sub-air opening 221 is reasonably placed and not plugged, the baffle 223 can be in a closed state for shielding the vertical sub-air opening 222, and the cooling air flow in the air supply duct 21 is all sent into the storage compartment through the forward sub-air opening 221, so that the cooling air flow is ensured to have an optimal air supply path. When the front sub-air opening 221 is blocked due to more food materials in the storage room or unreasonable discharge, the air flow pressure at the air supply opening 22 is increased, the baffle 223 can be in an opened state of opening the vertical sub-air opening 222, and the cooling air flow in the air supply air duct 21 can be switched to be sent into the storage room from the vertical sub-air opening 222, so that the phenomenon that the whole air supply opening 22 is blocked by the food materials is effectively avoided, and the fresh-keeping effect of the storage room is improved.

In some embodiments, the supply port 22 includes a barrel 224 that projects forward from a front side of the air chute assembly 20 toward the storage compartment. The forward sub-tuyere 221 is provided on the front end face of the cylinder 224.

In the case where the forward sub-air port 221 is not blocked, all the cooling air flow in the air supply duct 221 flows into the storage compartment through the forward sub-air port 221. Because the forward sub-air opening 221 is formed on the front end surface of the cylinder 224, the position corresponding to the forward sub-air opening 221 is relatively forward, the air supply path of the air supply opening 22 is prolonged, the air supply is convenient for purposefully and accurately supplying air to special spaces (such as drawers, moisturizing containers, drying containers and the like) in the storage compartment, and the refrigerating efficiency of the special spaces is improved.

In some embodiments, the vertical sub-tuyeres 222 open up on the top surface of the barrel 224 and face upward. The baffle 223 is configured to be pivotally connected to the top surface of the cylinder 224 to pivot upward under the pressure of the air flow within the cylinder 224 to open the vertical sub-tuyere 222, and to pivot downward under its own weight to shield the vertical sub-tuyere 222.

The air supply port 22 includes a cylinder 224 protruding forward, a forward sub-port 221 is provided at a front end face of the cylinder 224, a vertical sub-port 222 is provided at a top face of the cylinder 224 and faces upward, and a baffle 223 is pivotally connected to the top face of the cylinder 224. After the forward sub-tuyere 221 is blocked, the air pressure in the cylinder 224 is gradually increased, and the shutter 223 is automatically pivoted upward to open the vertical sub-tuyere 222 by the air pressure. After the forward sub-tuyere 221 is re-opened, the airflow pressure in the cylinder 224 is gradually reduced, and the baffle 223 can pivot downward under the action of its own weight to shield the vertical sub-tuyere 222, that is, the baffle 223 realizes state switching under the action of the airflow pressure and its own weight, so that no special control is required, and the structure is particularly simple, simplifying the structure of the air duct assembly 20, and reducing the cost thereof.

FIG. 3 is a schematic view of a portion of a duct assembly according to a second embodiment of the present utility model. In some embodiments, referring to fig. 3, the stop 223 has a pivot end 2231 for connection with the top surface of the barrel 224 and a free end 2232 opposite the pivot end 2231 thereof. Further, the air supply port 22 further includes a spring 225, one end of the spring 225 is connected to the free end 2232 of the baffle plate 223, and the other end is connected to the position of the vertical sub-port 222 matched with the free end 2232 of the baffle plate 223.

Since the spring 225 has a certain elongation deformation range, after the forward sub-tuyere 221 is blocked, the baffle 223 pivots upward under the action of air flow top pressure, the spring 225 is gradually stretched under the pulling action of the free end 2232, when reaching the limit of the elongation deformation range, the spring 225 is not deformed any more, and the free end of the baffle 223 is not moved under the pulling action of the spring 225, so that the baffle 223 can be kept still, the upward pivoting angle of the baffle 223 is limited to be too large, and the closed state of the vertical sub-tuyere 222 is difficult to recover under the action of self gravity.

FIG. 4 is a schematic view of a portion of a duct assembly according to a third embodiment of the present utility model. In some embodiments, referring to fig. 4, a limiting member 226 is disposed above the cylinder 224, and the limiting member 226 is configured to abut against the baffle 223 after the baffle 223 is pivoted upward to a preset angle, so as to prevent the baffle 223 from continuing to pivot upward. The stopper 226 can prevent the baffle 223 from pivoting upward by an excessive angle and thus is difficult to restore the closed state of the shielding vertical sub-tuyere 222 under the self-gravity.

Specifically, the maximum pivot angle of the barrier 223 may be set to any angle value between 30 ° and 60 °. The maximum pivot angle of the barrier 223 may be limited within the above range by appropriately selecting or setting the specification of the spring 225 or the extension length of the stopper 226.

FIG. 5 is a schematic top view of a duct assembly according to one embodiment of the utility model. In some embodiments, the rear end of the barrier 223 is hinged to the top surface of the cylinder 224 by a hinge assembly 227 to open the vertical sub-tuyere 222 toward the front upper side when the barrier 223 is pivoted upward. Thereby, the cooling air flow can be blown toward the front upper side of the storage compartment as much as possible to optimize the flow path of the cooling air flow as much as possible.

Fig. 6 is a schematic view of a portion of a wind tunnel assembly according to a fourth embodiment of the present utility model. In some embodiments, referring to fig. 6, the stop 223 has a pivot end 2231 for connection with the top surface of the barrel 224 and a free end 2232 opposite the pivot end 2231. Further, the free end 2232 of the baffle 223 is provided with a first magnetic attraction piece 228, and the position of the vertical sub-tuyere 222 matched with the free end of the baffle 223 is provided with a second magnetic attraction piece 229, and the first magnetic attraction piece 228 and the second magnetic attraction piece 229 are configured to attract each other magnetically. That is, when the distance between the first magnetic attraction piece 228 and the second magnetic attraction piece 229 is within a certain range, the first magnetic attraction piece 228 and the second magnetic attraction piece 229 may generate a magnetic attraction force that attracts each other. Thereby, the airflow pressure to which the shutter 223 is subjected when it starts to pivot can be increased, avoiding the shutter 223 from being easily opened. Specifically, when a part of the flow-through area of the forward sub-tuyere 221 is blocked or the flow rate of the cooling air flow is large, the air flow top pressure applied to the baffle 223 may be greater than its own gravity to pivot upward, and part of the cooling air flow is blown out from the vertical sub-tuyere, reducing the air flow rate of the forward sub-tuyere 221.

According to the utility model, by arranging the first magnetic attraction piece 228 and the second magnetic attraction piece 229, when part of the flow area of the forward sub-air opening 221 is blocked or the flow rate of cooling air flow is high, most or all of the cooling air flow in the air supply opening 22 can be blown out through the forward sub-air opening 221, so that most or all of the cooling air flow can have an optimal flow path.

In some embodiments, the first magnetic attraction 228 may be a sheet of iron wrapped around the free end 2232 of the bezel 223. The second magnetic attraction 229 may be a magnet fixed at a position of the vertical sub-air port 222 to be engaged with the free end 2232 of the barrier 223. Thereby, not only is the placement of the iron sheet and magnets facilitated, but the iron sheet and magnets are inexpensive and readily available, reducing the cost of the air duct assembly 20.

FIG. 7 is a schematic view of a portion of a duct assembly according to a fifth embodiment of the utility model. In some embodiments, referring to fig. 7, a vertical sub-tuyere 222 may also be opened at the bottom surface of the cylinder 224 and directed downward. The barrier 223 has a pivot end 2231 for pivotable connection with the bottom surface of the barrel 224 and a free end 2232 opposite the pivot end 2231; an elastic member 30 is provided between the free end 2232 and the bottom surface of the cylinder 224, and the deformation-retaining capacity of the elastic member 30 is greater than the gravity of the barrier 223. The deformation retaining ability of the elastic member 30 is the minimum force that can keep the elastic member 30 from deforming.

Further, the elastic member 30 is configured to be elongated to pivot the barrier 223 downward to open the vertical sub-air port 222 when the sum of the air flow pressure to which the barrier 223 is subjected and the gravity of the barrier 223 is greater than the deformation maintaining capacity of the elastic member 30, and to be retracted to pivot the barrier 223 upward to shield the vertical sub-air port 222 when the sum of the air flow pressure to which the barrier 223 is subjected and the gravity of the barrier 223 is less than the deformation maintaining capacity of the elastic member 30.

The vertical sub-air opening 222 is arranged on the bottom surface of the cylinder 224, so that the air supply opening 22 is not blocked by food materials in the storage compartment easily.

The utility model further provides an air-cooled refrigerator, and fig. 8 is a schematic structural diagram of the air-cooled refrigerator according to one embodiment of the utility model. The air-cooled refrigerator 1 of the present utility model may generally include a cabinet 10, with a storage compartment 11 defined within the cabinet 10 for storing items.

In particular, the refrigerator 1 further includes the air duct assembly 20 described in any of the above embodiments, and the air duct assembly 20 is disposed at a rear side of the storage compartment 11 for delivering cooling air flow to the storage compartment 11.

Since the air supply opening 22 of the air duct assembly 20 includes not only the forward-facing sub-opening 221, but also the upward-facing or downward-facing vertical sub-opening 222, the vertical sub-opening 222 faces upward or downward, and is thus less prone to being blocked by food materials. And, a baffle plate 223 selectively opening or shielding the vertical sub-tuyere is further provided at the vertical sub-tuyere 222. When the food in the storage compartment is less or the forward sub-air opening 221 is reasonably placed and not plugged, the baffle 223 can be in a closed state for shielding the vertical sub-air opening 222, and the cooling air flow in the air supply duct 21 is all sent into the storage compartment through the forward sub-air opening 221, so that the cooling air flow is ensured to have an optimal air supply path. When the front sub-air opening 221 is blocked due to more food materials in the storage room or unreasonable discharge, the air flow pressure at the air supply opening 22 is increased, the baffle 223 can be in the open state of the open vertical sub-air opening 222, and the cooling air flow in the air supply duct 21 can be switched to be sent into the storage room from the vertical sub-air opening 222, so that the phenomenon that the whole air supply opening 22 is blocked by the food materials is effectively avoided, and the fresh-keeping effect of the storage room 11 is improved.

Specifically, the storage compartment 11 may be a refrigerated compartment having a refrigerated storage environment, and the temperature therein may be generally 0 to 8 ℃.

Further, a storage drawer is arranged in the storage compartment 11, and the air supply opening 22 of the air duct assembly 20 is used for conveying cooling air flow to the storage drawer.

Further, other air supply openings are further formed in the air duct assembly 20 for supplying cooling air to the entire area of the storage compartment 11.

It should be understood by those skilled in the art that the above-described embodiments are only a part of embodiments of the present utility model, and not all embodiments of the present utility model, and the part of embodiments is intended to explain the technical principles of the present utility model and not to limit the scope of the present utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present utility model, shall still fall within the scope of protection of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "center", "upper", "lower", "top", "bottom", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on actual use states of the duct assembly 20 and the air-cooled refrigerator 1, are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Further, it should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. The air duct assembly is arranged at the rear side of the storage compartment of the air-cooled refrigerator and is used for conveying cooling air flow to the storage compartment; it is characterized in that the method comprises the steps of,

an air supply channel for circulating cooling air flow is limited in the air channel assembly, the air channel assembly is provided with an air supply port, and the air supply port is communicated with the air supply channel and the storage compartment so as to allow cooling air in the air supply channel to flow into the storage compartment through the air supply port; wherein the method comprises the steps of

The air supply port comprises a forward sub-port facing forwards and a vertical sub-port facing upwards or downwards, wherein a baffle plate is arranged at the vertical sub-port and is configured to selectively open or shield the vertical sub-port.

2. The duct assembly of claim 1, wherein the duct assembly comprises a housing,

the air supply port comprises a cylinder body which protrudes forwards from the front side of the air duct component towards the storage compartment; and is also provided with

The forward sub-air opening is arranged on the front end face of the cylinder body.

3. The duct assembly of claim 2, wherein the duct assembly comprises,

the vertical sub-air opening is formed in the top surface of the cylinder body and faces upwards; and is also provided with

The baffle is configured to be pivotally connected to the top surface of the cylinder to pivot upwardly under the pressure of the air flow in the cylinder to open the vertical sub-tuyere and to pivot downwardly under its own weight to shield the vertical sub-tuyere.

4. The duct assembly of claim 3, wherein,

and a limiting piece is arranged above the cylinder body and is configured to abut against the baffle after the baffle is pivoted upwards to a preset angle so as to prevent the baffle from continuing to pivot upwards.

5. The duct assembly of claim 3, wherein,

the baffle has a pivoting end for connection with the top surface of the barrel and a free end opposite the pivoting end; and is also provided with

The air supply outlet further comprises a spring, one end of the spring is connected with the free end of the baffle, and the other end of the spring is connected with the position, matched with the free end of the baffle, of the vertical sub-air outlet.

6. The duct assembly of claim 3, wherein,

the rear end of the baffle is hinged with the top surface of the cylinder body through a hinge assembly so as to open the vertical sub-tuyere towards the front upper side when the baffle pivots upwards.

7. The duct assembly of claim 3, wherein,

the baffle has a pivoting end for connection with the top surface of the barrel and a free end opposite the pivoting end; and is also provided with

The free end of the baffle is provided with a first magnetic attraction piece, a second magnetic attraction piece is arranged at the position of the vertical sub-air opening matched with the free end of the baffle, and the first magnetic attraction piece and the second magnetic attraction piece are configured to be attracted mutually in a magnetic mode.

8. The duct assembly of claim 7, wherein the duct assembly comprises,

the first magnetic attraction piece is an iron sheet coated outside the free end of the baffle; and is also provided with

The second magnetic attraction piece is a magnet fixed at the position of the vertical sub-air opening, which is matched with the free end of the baffle plate.

9. The duct assembly of claim 2, wherein the duct assembly comprises,

the vertical sub-air opening is formed in the bottom surface of the cylinder body and faces downwards; and is also provided with

The baffle has a pivot end for pivotable connection with the bottom surface of the barrel and a free end opposite the pivot end; an elastic piece is arranged between the free end and the bottom surface of the cylinder body, the deformation retaining capacity of the elastic piece is larger than the gravity of the baffle plate, the elastic piece is configured to stretch when the sum of the airflow pressure born by the baffle plate and the gravity of the baffle plate is larger than the deformation retaining capacity of the elastic piece so that the baffle plate pivots downwards to open the vertical sub-air opening, and retract when the sum of the airflow pressure born by the baffle plate and the gravity of the baffle plate is smaller than the deformation retaining capacity of the elastic piece so that the baffle plate pivots upwards to shield the vertical sub-air opening.

10. An air-cooled refrigerator, comprising:

a case defining a storage compartment therein for storing articles; and

the air duct assembly of any one of claims 1-9, disposed on a rear side of the storage compartment for delivering a cooling airflow thereto.

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