WO2018227730A1 - Wind control device and refrigerator - Google Patents

Abstract

A wind control device (30) and a refrigerator, the wind control device (30) comprising: a casing (33) and a control portion (32); the casing (33) comprises a first air port (31) and a second air port (331); the control portion (32) comprises a tubular member (32a) that is rotatably disposed within the casing (33); a plurality of openings (321) are provided on a side wall of the tubular member (32a), and the plurality of openings (321) may, by means of the rotation of the control portion (32), be aligned with the second air port (331) respectively for communication; when the second air port (331) is aligned with an opening (321), at least one other opening (321) is in communication with the first air port (31). By means of the rotation of the tubular member (32a), the second air port (331) may be aligned with an opening (321), and then, by means of a hollow structure of the tubular member (32a), may communicate with another opening (321) which is in communication with the first air port (31), thus achieving communication between the second air port (331) and the first air port (31); moreover, by means of rotating the tubular member (32a), an opening (321) and the second air port (331) may partially overlap to different extents, thus controlling the amount of wind that passes through the second air port (331).

Description

Air control unit and refrigerator Technical field

The present invention relates to the field of home appliances, and in particular to a wind control device and a refrigerator.

Background technique

In many air supply applications, it is often necessary to provide different air volumes depending on the actual situation. For example, the space for storing food in the refrigerator is large and divided into different regions, and it is necessary to transport the cold air of the required air volume to different locations for corresponding cooling and preservation. In the prior art, the amount of conveyance is usually adjusted by providing a device such as a damper. The damper is usually a baffle that is pivotally mounted in the air duct to control the communication of the air passage by pivoting, so that only the air supply can be controlled, and the air supply amount cannot be adjusted for actual different air volume requirements.

Summary of the invention

The object of the present invention is to solve the problem of providing different air supply volumes, and to provide a wind control device to provide different air supply amounts according to requirements.

In order to achieve the above object, an aspect of the present invention provides an air control device, wherein the air control device includes a housing and a control portion, the housing includes a first tuyere and a second tuyere, and the control portion includes a rotatable a cylindrical member disposed in the casing, the side wall of the tubular member being provided with a plurality of openings, wherein the plurality of openings are respectively aligned with the second tuyere by rotation of the control portion And communicating, when the second tuyere is aligned with one of the openings, the first tuyere and the second tuyere form an airflow path through the opening and at least another of the openings communicating with the first tuyere.

The present invention also provides a refrigerator, wherein the refrigerator includes the air control device of the present invention.

According to the above technical solution, the second tuyere can be aligned with the opening by the rotation of the tubular member. Then, the hollow structure of the tubular member communicates with other openings communicating with the first tuyere, thereby achieving communication between the second tuyere and the first tuyere. In one aspect, the communication between the first tuyere and the second tuyere can be controlled by rotating the tubular member such that the opening is aligned or misaligned with the second tuyere; on the other hand, the opening can be made by rotating the tubular member to the opening It partially overlaps with the second tuyere to control the amount of air passing through the second tuyere.

DRAWINGS

Figure 1 is an exploded view of an embodiment of the air control device of the present invention;

Figure 2 is a front elevational view of the air control device of Figure 1;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

4 to 11 are schematic views of the air control device of Fig. 1 in different working modes;

Figure 12 is a schematic view showing the flow of cold air in an operating state of the refrigerator with the wind control device of the present invention;

Figure 13 is an exploded view of a casing and an air duct component of an embodiment of the refrigerator of the present invention;

Figure 14 is a schematic view showing the cold air flow of the refrigerator of Figure 13;

Figure 15 is an exploded view of a portion of the air duct of the refrigerator of Figure 13;

Figure 16 is a perspective view of the upper portion of the heat insulating layer of the air duct of the refrigerator of Figure 13;

Figure 17 is a perspective view of the heat insulating layer of the air duct of the refrigerator of Figure 13;

Figure 18 is an exploded view of a casing and a duct member of another embodiment of the refrigerator of the present invention;

Figure 19 is a schematic view showing the cold air flow of the refrigerator of Figure 18;

Figure 20 is an exploded view of a portion of the air duct of the refrigerator of Figure 18;

Fig. 21 is a perspective view of the upper portion of the heat insulating layer of the air duct of the refrigerator of Fig. 18;

Description of the reference numerals

10-wind chamber, 30-wind control device, 31-first tuyere, 32-control unit, 32a-cylinder, 321-opening, 322-first correction block, 33-shell, 331-second tuyere, 331a - first air outlet, 331b- Second air outlet, 331c-third air outlet, 34-rotating bracket, 35-motor, 351-shield, 36-seal, 40-front cover, 50-rear cover, 60-insulation, 61- Worm tongue, 62-wind control unit installation, 70-refrigeration unit, 80- return air outlet, 100-duct, 200-box, 210-shelf, 220-storage area, 300-fan, 400-sensor

detailed description

In the present invention, the orientation words such as "up, down, left, and right" as used generally refer to the above, below, left, and right as shown in the accompanying drawings; "inside and outside". It refers to the inside and outside of the contour of each component itself.

According to an aspect of the invention, there is provided a wind control device, wherein the air control device 30 includes a housing 33 and a control portion 32, the housing 33 including a first tuyere 31 and a second tuyere 331, the control The portion 32 includes a tubular member 32a rotatably disposed in the casing 33, and a plurality of openings 321 are provided in the side wall of the tubular member 32a, and the plurality of the openings 321 can pass through the control portion 32. Rotating and aligning with the second tuyere 331 respectively, when the second tuyere 331 is aligned with one of the openings 321 , the first tuyere 31 and the second tuyere 331 pass through the opening 321 and At least one other of the openings 321 in which the first tuyere 31 communicates forms an air flow path.

Here, "aligned" means that the opening 321 has regions overlapping each other on the end faces of the second tuyere 331, including completely coincident and partially coincident. By the rotation of the tubular member 32a, the second tuyere 331 can be aligned with the opening 321 and then communicated with the other opening 321 communicating with the first tuyere 31 through the hollow structure of the tubular member 32a, thereby realizing the second tuyere 331 and The communication of the first tuyere 31. In other words, by the rotation of the tubular member 32a, the air flow path can be formed by the first tuyere 31, the second tuyere 331, and the opening 321 that communicates with the first tuyere 31 and the second tuyere 331, respectively, to achieve air supply.

Specifically, on the one hand, the connection between the first tuyere 31 and the second tuyere 331 can be controlled by rotating the tubular member 32a such that the opening 321 is aligned or misaligned with the second tuyere 331; On the one hand, the amount of wind passing through the second tuyere 331 can be controlled by rotating the tubular member 32a such that the opening 321 partially overlaps the second tuyere 331 to a different extent.

Preferably, the housing 33 includes a plurality of the second tuyes 331, the rotation axis of the cylindrical member 32a is parallel to the arrangement direction of the plurality of the second tuyes 331, and the cylindrical member 32a includes the same A plurality of sets of the openings 321 provided in the direction of the rotation axis of the cylindrical member 32a, each of the openings 321 being alignable with the same one of the second tuyères 331 by the rotation of the tubular member 32a. Thereby, the different second tuyes 331 can be aligned with the corresponding openings 321 by the rotation of the tubular member 32a, and then communicate with the first tuyere 31.

When the first tuyere 31 is used as the air inlet and the second tuyere 331 is used as the air outlet, the air can be blown through the second tuyere 331 aligned with the opening 321, for example, air can be blown to different positions of the refrigerator. When the first tuyere 31 serves as the air outlet and the second tuyere 331 serves as the air inlet, the second tuyere 331 aligned with the opening 321 can enter the air and pass through the first tuyere 31 to the desired position (for example, the air return of the refrigerator) ).

In the present invention, the tubular member 32a may be a cylindrical or other hollow tubular structure having a cross section. Preferably, for ease of arrangement, in the illustrated embodiment, the axis of rotation of the barrel 32a may be the axis of the barrel 32a itself such that each set of openings 321 are spaced apart along the same circumference of the barrel 32a. Additionally, different sets of openings 321 can be aligned, staggered, or partially aligned in the direction of the axis of rotation to achieve different modes of operation. Further, as shown in Fig. 3, the airflow enters from one side of the air control device 30 (a side perpendicular to the rotation axis of the tubular member 32a (up and down direction in Fig. 3) (the right side in Fig. 3)) The other side (the left side in FIG. 3) is sent out, and a large amount of air can be introduced on one side of the tubular member 32a, which is advantageous for improving the air intake efficiency and the air blowing efficiency and can reduce the steering of the airflow inside the air control device 30 and thereby The resulting loss.

Preferably, as shown in FIG. 1, at least two of the openings 321 have the opening 321 which is staggered in the direction of the rotation axis. Therefore, during the rotation of the tubular member 32a, the two second tuyeres 331 corresponding to the at least two sets of openings 321 have different states of communication with the corresponding openings 321 (when the second tuyeres 331 are air outlets, then Having different states of air supply; when the second tuyere 331 is When the air inlet is in the air inlet state, there is a state in which the air is not simultaneously entered, so as to set various working modes according to the different needs of the other second air outlets 331 according to the function.

To achieve a plurality of modes of operation by the wind control device 30, preferably each of the second tuyes 331 is configured to have a separate communication state that is individually aligned with the opening 321 to communicate with the first tuyere 31 to have A single-zone operation mode in which air or air is supplied through each of the second tuyeres 331, respectively. In addition, at least one of the second tuyes 331 is a multi-state tuyere, and the multi-state tuyere can be aligned with the other at least one of the second tuyes 331 simultaneously with the corresponding opening 321 so as to be aligned with the first tuyere 31 Connected to have a multi-zone mode of operation with at least two second tuyeres 331 for air or air intake.

Further, the air control device 30 is disposed to have a state in which all of the plurality of second air ports 331 are not aligned with the corresponding opening 321 such that the first tuyere 31 does not communicate with any of the second tuyes 331.

Among them, various reasonable air supply or air intake states can be realized by reasonably combining the separate opening states of the different second air outlets 331 and the state in which the other second air outlets 331 are simultaneously opened. For example, with the opening of the second tuyere 331 (here, the opening to the maximum flow rate) and the closing of the second tuyeres 331 , each of the second tuyes 331 has two states of opening and closing, for example, the wind control device 30 is provided with m second tuyeres 331 . According to the arrangement and combination, there may be 2 ^m working modes, including: the second tuyere 331 is fully open, the second tuyere 331 is fully closed, the first second tuyere 331 (sorted in the arrangement direction) is opened, and the other second tuyere 331 is fully Closing, the first and second second tuyes 331 are open and the other second tuyeres 331 are fully closed... the first second tuyere 331 is closed and the other second tuyeres 331 are fully open. According to the need to control the air volume of the second tuyere 331, the more working modes corresponding to the partial opening of the second tuyere 331 can also be set.

Further, in order to reduce the loss of the airflow during the flow and to facilitate the air supply direction of the air control device 30, the first tuyere 31 is disposed opposite to the second tuyere 331. For example, in the case where the housing 33 has parallel opposite sides, the first tuyere 31 and the second tuyere 331 are respectively disposed on the parallel opposite sides, for example, in the embodiment shown in FIG. 1, the first tuyere 31 as the air inlet, The second tuyere 331 serves as an air outlet, and the first tuyere 31 can be substantially completely opened on one side of the casing 33 to increase the amount of intake air, whereby after the airflow enters the casing 33 from the first tuyere 31, it can be in each The opening 321 is entered in the direction through the gap between the casing 33 and the cylindrical member 32a, and then the second tuyere 331 is sent through the inside of the cylindrical member 32a through the opening 321 aligned with the second tuyere 331. Similarly, the operation process of the first tuyere 31 as the air outlet is similar to the above, and will not be described in detail herein. Preferably, the air control device 30 includes openings 321 which are disposed opposite each other in the diametrical direction of the cylindrical member 32a, and each pair of the openings 321 are opposed to each other in the radial direction of the cylindrical member 32a, thereby ensuring When one opening 321 is aligned with the second tuyere 331, the other opening 321 is just aligned with the first tuyere 31 to communicate with the first tuyere 31. The pair of openings 321 do not necessarily belong to the same group of openings 321 .

Further, in order to concentrate the intake air to the outside, preferably, the inside of the tubular member 32a is axially communicated, so that when a part of the second tuyeres 331 of the plurality of second tuyeres 331 are blown or blown, the air can be concentrated. All of the airflow within the housing 33 is delivered outward.

In order to achieve the rotation of the tubular member 32a, the air control device 30 includes a rotating bracket 34, the housing 33 is fixed to the rotating bracket 34, and the control portion 32 is rotatably mounted to the rotating bracket 34.

In the present invention, the tubular member 32a can be driven by various suitable means, such as manually rotating the tubular member 32a. In order to facilitate automatic control, the air control device 30 may include a motor 35 for driving the rotation of the control portion 32, and the outside of the motor 35 may also be protected by a protective cover 351. Preferably, the motor 35 is a bi-directional motor to more accurately drive the barrel 32a to rotate to the desired mode of operation over a 360° range.

Wherein, in order to accurately determine the rotational position of the tubular member 32a, the control portion 32 and the housing 33 may define opposing reference positions by a stop structure that cooperates with each other. For example, the starting or ending position of the range of rotation of the tubular member 32a can be defined by the stop structure (of course, other reference positions, such as a position rotated by 30° from the starting position of the relative rotation). Among other things, the stop structure can be in various suitable forms and can be placed on suitable components. For example, in the illustrated embodiment, stop structures may be provided on the barrel 32a and the rotating bracket 34, respectively. on. Specifically, the cylindrical member 32a may be provided with a first correction block 322, and the rotation bracket 34 may be provided with a second correction block that is engaged with the first correction block 322 at a position to be positioned.

In order to further precisely control the rotation of the tubular member 32a to a position corresponding to each working mode, the air control device 30 is configured to have n different operating states, and the motor 35 is a stepping motor and is set to 360°/n. Rotate at an angle. The state of the wind in different operating modes will be described below with reference to Figs. 1 to 11 (in the embodiment of Figs. 1 to 11, the second tuyere 331 is used as the air outlet). In the embodiment shown in FIG. 1 to FIG. 3, the second tuyere 331 includes a first air outlet 331a, a second air outlet 331b, and a third air outlet 331c, which are respectively disposed corresponding to the axial region 1 and the axial region 2, respectively. And the air supply in the axial region 3, the air control device 30 is configured to be capable of achieving a separate air supply operation mode through the first air outlet 331a, the second air outlet 331b, and the third air outlet 331c, respectively, and capable of passing any two second air outlets The 331 realizes the combined air supply mode, the full air supply mode in which the three second air ports 331 are simultaneously supplied, and the closed mode in which all the three air ports 331 are all closed. The air control device 30 therefore needs to have 8 operating modes (here, only the working mode in which the second tuyere 331 is fully aligned with the corresponding opening 321 to open or completely out of alignment), the motor 35 can be set to 45 ° Rotate at angular intervals. To this end, each of the second tuyeres 331 is closed in four working modes, and is opened in the other four working modes, and the cylindrical member 32a is provided with at least four openings 321 corresponding to each of the second tuyeres 331 through the axis. The above eight modes of operation can be achieved by staggering and aligning the different openings 321. The order in which the specific working modes are implemented can be selected as needed.

For example, as shown in FIG. 4, at this time, the motor 35 is rotated at 0° from the initial position, that is, the first air outlet 331a, the second air outlet 331b, and the third air outlet 331c are not closed with the opening 321; As shown in FIG. 5, the motor 35 is rotated to a 45° position, the first air outlet 331a is in communication with the first air outlet 31, and the second air outlet 331b and the third air outlet 331c are not closed with the opening 321; As shown in Fig. 6, the motor 35 is rotated to the 90° position, the first air outlet 331a and the third air outlet 331c are not closed with the opening 321 and the second air outlet 331b is connected to the first air outlet 31 to open; Show that the motor 35 is rotated to the 135° position, the first air outlet 331a and the second The air outlet 331b is closed without being aligned with the opening 321 , and the third air outlet 331c is connected to the first air outlet 31 to be opened; as shown in FIG. 8 , the motor 35 is rotated to a position of 180°, the first air outlet 331a and the second air outlet. The 331b is open to communicate with the first tuyere 31, and the third air outlet 331c is not closed with the opening 321; as shown in FIG. 9, the motor 35 is rotated to the 225° position, and the first air outlet 331a and the third air outlet 331c are The first tuyere 31 is connected to open, and the second air outlet 331b is not closed with the opening 321; as shown in FIG. 10, the motor 35 is rotated to a position of 270°, and the first air outlet 331a is not closed with the opening 321 and is closed. The second air outlet 331b and the third air outlet 331c are in communication with the first air outlet 31; as shown in FIG. 11, the motor 35 is rotated to a position of 315°, the first air outlet 331a, the second air outlet 331b, and the third air outlet. Each of the 331c is in communication with the first tuyere 31 and is opened.

In addition, preferably, the air control device 30 includes a seal 36 that is sealingly engaged between the second tuyere 331 and the control portion 32 to ensure that all gas entering from the first tuyere 31 passes through the pair of openings 321 The quasi-second tuyeres 331 send or ensure that all of the gas entering from the second tuyere 331 is sent through the first tuyere 31.

According to another aspect of the present invention, there is provided a refrigerator, wherein the refrigerator includes the air control device 30 of the present invention, so that air blowing or air intake can be performed by the wind control device 30 of the present invention.

According to an embodiment of the present invention, the wind control device 30 of the present invention is used to supply air. Specifically, the air control device 30 includes a first air control device, and the refrigerator includes a air duct 100 and a storage area 220, and the air duct 100 includes The air chamber 10, the first tuyere 31 of the first air control device is in communication with the air chamber 10, and the second tuyere 331 of the first air control device is in communication with the storage area 220.

Thereby, the storage area 220 can be blown by the second tuyere 331 of the first air control device. In the case of having a plurality of storage areas 220, a plurality of second air outlets 331 may be respectively provided in one-to-one correspondence with the plurality of storage areas 220. According to different working modes of the second air outlets 331, different storage areas 220 may be different. The combination of working states.

According to another embodiment of the present invention, the air duct 100 includes a return air port 80, and the air control device 30 includes a second air control device, and the first air outlet 31 or the second air outlet 331 and the return air port 80 of the second air control device Connected to return air through the first tuyere 31 or the second tuyere 331. At the first air outlet 31 or the second tuyere 331 is in communication with the return air port 80, the return air through the return air port 80 can be controlled, and in particular, the air volume fed to the air return port 80 can be controlled by the second air return port 331 of different numbers and opening degrees. To control the amount of return air.

Among them, the air control device 30 can be disposed at an appropriate position for arrangement. For example, in the case of blowing air to the different storage areas 220 through the second tuyes 331, as shown in FIGS. 12-21, the refrigerator includes a plurality of first wind control devices, and the plurality of the first air control devices are disposed at The two sides of the air chamber 10 are positioned to supply air to different storage areas 220 in the cabinet 200 of the refrigerator from both sides. Specifically, as shown in FIG. 12, the inside of the box 200 may include a refrigerating area and a freezing area, and the storage area 220 may include a plurality of compartments separated by the shelf 210 in the refrigerating area, and the first air control device is from the wind chamber 10. Cold air is introduced into the middle and air is supplied from both sides of the casing 200 (the cold air flow path is as indicated by an arrow in Fig. 14), and then air is supplied from both sides of the refrigerating zone to the middle of the compartment (the cold air flow path is as indicated by an arrow in Fig. 12) ). Wherein, the position where the cold air is introduced into the wind chamber 10 (for example, the position of the fan 300) is usually located in the middle of the air chamber 10, and the first air control device can be placed in the multi-system refrigerator as far as possible by placing the first air control device on both sides in the air chamber 10. The position of the fan 300 is so as not to affect the efficiency of the fan 300 and prevent the operation of the fan 300 from interfering with the air blowing efficiency of the first air control device. In addition, a lower portion of the casing 200 is further provided with a freezing area, and the storage area 220 may further include a storage space defined by each drawer of the freezing area. In addition, the refrigerating zone and the freezing zone may also be supplied with air through different second tuyères 331 to achieve separate and simultaneous air supply of the refrigerating zone and the freezing zone.

Wherein, the sensor 400 may be disposed at at least a portion of the second tuyere 331 to monitor the air outlet condition of the second tuyere 331, and by feedback to the controller, the controller may adaptively adjust the air supply intensity to achieve the second The cooling effect required for the area corresponding to the tuyere 331 and the amount of air supplied to the desired area can be adjusted by opening or closing the other second tuyere 331.

The air duct 100 includes a front cover 40, a rear cover 50 and an insulation layer 60 interposed between the front cover 40 and the rear cover 50. The air chamber 10 is defined by the rear cover 50 and the insulation layer 60 for easy installation. The housing 33 may be disposed on the insulating layer 60, the front cover 40 or the rear cover 50. Specifically, the housing 33 can be mounted on the thermal insulation layer 60, the front cover 40 or the rear cover 50, for example, according to one implementation. As shown in FIG. 15, the heat insulating layer 60 may be provided with a wind control device mounting portion 62 (for example, a mounting groove) to mount the housing 33; alternatively, the housing 33 may be integrally formed on the heat insulating layer 60, The front cover 40 or the rear cover 50 (the housing 33 and the rear cover 50 may be integrally formed, and the rotating bracket 34 may also be integrally formed with the rear cover 50; or, for example, on the thermal insulation layer 60 The first tuyere 31 and the second tuyere 331 are used as the casing 33); alternatively, the casing 33 may be placed in the insulation layer 60.

Further, the refrigerator of the present invention may be a multi-system refrigerator, such as the embodiment shown in FIGS. 13 to 17, or may be a single-system refrigerator, such as the embodiment shown in FIGS. 18 to 21.

In the multi-system refrigerator, a fan 300 is disposed in the air chamber 10 to extract cold air from outside the air chamber 10 and send it to the first tuyere 31 of the air control device 30. In order to advantageously direct the cold air extracted by the fan 300, the volute 61 is disposed in the fan cavity of the heat insulating layer 60. Further, as described above, by providing the air control device 30 on both sides of the air chamber 10, the air control device 30 can be moved away from the fan 300, and the air control device 30 can be prevented from obstructing the airflow sucked by the fan 300 to cause loss.

For the single-system refrigerator, the fan 300 is not disposed in the air chamber 10, and the cold air is introduced from the other portions of the refrigerator and sent to the first tuyere 31 of the air control device 30.

In addition, the air control device 30 may be disposed at the air return opening of the air duct 100, so as to control the return air through the opening, closing, opening and quantity of the first air outlet 31 or the second air outlet 331 communicating with the air return port. Air volume.

Here, the working process of the air supply of the refrigerator will be described with reference to the drawings. Taking the multi-system refrigerator shown in FIG. 13 to FIG. 17 as an example, as shown in FIG. 17, the air duct 100 further includes a refrigerating device 70 located below the air chamber 10, and the return air port 80 is located below the refrigerating device 70, and enters from the air return port 80. The wind flows through the refrigerating device 70 and is cooled into cold air for providing a cooling effect to different positions of the refrigerator. The cold air is sucked into the air chamber 10 through the fan 300, and then sent to the storage area 220, for example, through the first air control device, and finally The storage area 220 is returned again via the return air port 80 to be cooled again by the refrigeration device 70 and form a circulation path.

When the second air control device is disposed at the return air port 80, the second air control device may be disposed at The return air is sent from the return air port 80 to the path of the refrigerating device 70 to control the amount of air that is sent back to the refrigerating device 70 for cooling.

In the refrigerator of the present invention, different air supply modes can be realized by the air control device 30, for example, local temperature adjustment and concentration cooling of one or some storage areas 220, and temperature uniformity of the storage area 220 in time and space can be improved.

It should be noted that although the above describes an example of conveying the cold air of the air control device 30 in combination with the specific application of the refrigerator, it can be understood that the air control device 30 can also be used in other occasions where the air volume needs to be controlled, such as normal temperature wind, hot air, etc. . In addition, the air control device 30 can also be used to transport a gas-liquid mixture (for example, cold air with humidity delivered during humidity conditioning in the refrigerator).

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the invention is not limited thereto. Various simple modifications of the technical solution of the present invention can be made within the scope of the technical idea of the present invention. The invention includes various specific technical features combined in any suitable manner. In order to avoid unnecessary repetition, the present invention will not be further described in various possible combinations. However, these simple variations and combinations are also considered to be the disclosure of the present invention, and are all within the scope of the present invention.

Claims (18)

A wind control device, characterized in that the air control device (30) comprises a casing (33) and a control portion (32), the casing (33) comprising a first tuyere (31) and a second tuyere ( 331), the control portion (32) includes a cylindrical member (32a) rotatably disposed in the casing (33), and a plurality of openings are provided on a side wall of the cylindrical member (32a) 321) a plurality of the openings (321) can be respectively aligned with the second tuyere (331) by rotation of the control portion (32), and the second tuyere (331) and one When the opening (321) is aligned, the first tuyere (31) and the second tuyere (331) pass through the opening (321) and at least another of the openings (321) that communicate with the first tuyere (31) An air flow path is formed. The air control device according to claim 1, wherein said housing (33) includes a plurality of said second tuyères (331), and said cylinder (32a) has an axis of rotation parallel to the plurality of The arrangement direction of the second tuyere (331), the cylindrical member (32a) includes a plurality of sets of the openings (321) disposed along the rotational axis direction of the cylindrical member (32a), each set of the openings ( 321) can be aligned with the same second tuyere (331) by the rotation of the tubular member (32a). The air control device according to claim 2, characterized in that at least two of said openings (321) have said openings (321) offset in the direction of the axis of rotation. The air control device according to claim 2, wherein each of said second tuyères (331) is disposed to have a single alignment with said opening (321) to communicate with said first tuyere (31) a separate communication state; and/or at least one of the second tuyères (331) is a multi-state tuyere capable of simultaneously cooperating with the other at least one of the second tuyères (331) 321) aligned to communicate with the first tuyere (31). The air control device according to claim 2, wherein said air control device is provided It is in a state of having a plurality of the second tuyères (331) misaligned with the corresponding openings (321). The air control device according to claim 1, wherein the first tuyere (31) and the second tuyere (331) are oppositely disposed. The air control device according to any one of claims 1 to 6, characterized in that the inside of the cylindrical member (32a) is axially connected. The air control device according to any one of claims 1 to 6, characterized in that the control portion (32) and the housing (33) define opposite reference positions by means of a stop structure that cooperates with each other. The air control device according to claim 8, wherein said air control device (30) comprises a motor (35) for driving rotation of said control portion (32), said motor (35) being a two-way motor . The air control device according to claim 9, wherein said air control device (30) is configured to have n different operating states, said motor (35) being a stepper motor and being set at 360° /n is rotated at an interval angle. The air control device according to any one of claims 1 to 6, wherein the air control device (30) comprises a rotating bracket (34), and the housing (33) is fixed to the rotating bracket ( 34) The control portion (32) is rotatably mounted to the rotating bracket (34). The air control device according to any one of claims 1 to 6, wherein The wind control device (30) includes a seal (36) sealingly engaged between the second tuyere (331) and the control portion (32). A refrigerator, characterized in that the refrigerator comprises a wind control device (30) according to any one of claims 1-12. The refrigerator according to claim 13, characterized in that the refrigerator comprises a duct (100) and a storage area (220), the duct (100) comprising a wind chamber (10) and a return air opening (80), wherein : The air control device (30) includes a first air control device, and the first air outlet (31) of the first air control device is in communication with the air chamber (10), and the first air control device The second tuyere (331) is in communication with the storage area (220); and/or, The air control device (30) includes a second air control device, and the first air outlet (31) or the second air outlet (331) of the second air control device is in communication with the air return port (80). The refrigerator according to claim 14, wherein: The refrigerator includes a plurality of the first air control devices, and a plurality of the first air control devices are disposed at two sides in the air chamber (10); and/or, The second air control device is disposed at the air return port (80) of the air duct (100). The refrigerator according to any one of claims 13 to 15, characterized in that the refrigerator comprises a front cover (40), a rear cover (50) and a front cover (40) and a cover The insulating layer (60) between the rear cover plates (50) is disposed on the heat insulating layer (60), the front cover plate (40) or the rear cover plate (50). A refrigerator according to claim 16, wherein said housing (33) and said housing The insulating layer (60), the front cover (40) or the rear cover (50) are formed in one piece. The refrigerator according to claim 16, characterized in that the casing (33) is placed in the insulating layer (60).

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