WO2023082814A1

WO2023082814A1 - Air duct cover assembly and refrigerator

Info

Publication number: WO2023082814A1
Application number: PCT/CN2022/117813
Authority: WO
Inventors: 曹永宁; 阚涛
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2021-11-10
Filing date: 2022-09-08
Publication date: 2023-05-19
Also published as: CN216409449U

Abstract

An air duct cover assembly and a refrigerator. The air duct cover assembly comprises: a cover part, a main air duct and a branch air duct being defined in the cover part, and the inlet end of the branch air duct being communicated with the main air duct; a mechanical paddle damper which is configured to divide the main air duct into a first air cavity and a second air cavity, and adjust, by means of left-right movement, air volumes entering the first air cavity and the second air cavity; and a mechanical rotary damper which is configured to adjust, by means of rotation, the air volume entering the branch air duct. According to the air duct cover assembly, two different types of dampers are integrated on the same air duct cover assembly, and the two types of dampers can control air supply to three storage spaces; the air duct cover assembly is particularly suitable for refrigerators having small widths.

Description

Air duct cover assembly and refrigerator

technical field

The invention relates to the technical field of refrigeration and freezing devices, in particular to an air duct cover assembly and a refrigerator.

Background technique

The temperature control method of the freezer compartment of the existing low-end refrigerators mostly adopts a movable horizontal baffle built in the main air path of the refrigerating air duct to distribute the air volume of the refrigerating room and the freezing room, and then control the freezing temperature. Most of the structure is through the way of the knob and the rack and pinion, which often takes up a lot of space, and is not suitable for refrigerators with particularly narrow refrigerating air ducts.

Contents of the invention

An object of the present invention is to provide an air duct cover assembly with various dampers.

A further object of the present invention is to provide an air duct cover assembly suitable for narrow width refrigerators with a simple structure.

In particular, the present invention provides an air duct cover assembly, including:

The cover part defines a main air duct and a sub-air duct inside, and the inlet end of the sub-air duct communicates with the main air duct;

a mechanical paddle damper configured to divide the main air duct into a first air chamber and a second air chamber, and adjust the air volume entering the first air chamber and the second air chamber by moving left and right; and

A mechanical rotary damper configured to adjust the air volume entering the sub-air duct by rotation.

Optionally, the air duct cover plate assembly is arranged in a storage device having a storage space;

The air duct cover assembly further includes: a mechanical rotary potentiometer configured to adjust the target temperature of the storage space by rotating.

Optionally, the cover part includes: an air channel plate and a rear cover, and the rear cover is arranged on the rear side of the air channel plate;

A first groove is formed on the air duct plate with an opening extending backward and along the up and down direction, and a main air duct is defined between the rear cover plate and the first groove;

On the lateral side of the first groove, a second groove is formed on the air duct plate, which opens backward and extends in the up and down direction. The upper end of the second groove communicates with the first groove, and the rear cover plate and the second groove An air distribution channel is defined between the two grooves.

Optionally, the cover part further includes: a front cover disposed on the front side of the air duct plate;

The air channel plate is provided with a first elongated hole along the front and rear directions across the first groove, and a second elongated hole is provided on the front cover plate corresponding to the first elongated hole;

The mechanical paddle damper includes: a paddle, a vertical plate and a baffle, wherein the vertical plate is sandwiched between the front cover and the air duct plate, the paddle is inserted in the second elongated hole, and the baffle is inserted in the first elongated hole.

Optionally, a circular hole along the front-rear direction is opened on the front cover plate corresponding to the second groove, and a special-shaped hole is formed on the position corresponding to the circular hole on the air duct plate;

The mechanical rotary damper includes: a first rotary cover and a damper part, the first rotary cover has a first cover body and a first butt joint extending backward from the first cover body, the damper part has a cylindrical part, a damper, a first rotary For the handle and the hook, the central axis of rotation of the cylindrical part is arranged along the front-back direction, and its side extends outward to form a damper, the center of its front end extends forward to form a first rotary handle, and the periphery of its front end extends forward to form a hook; the second The first cover body is on the front side of the front cover, the first docking tube is inserted in the circular hole, the cylindrical part and the damper are in the second groove, the first handle is inserted in the first docking tube, and the hook It is connected with the front cover on the side of the circular hole.

Optionally, a mounting bracket is formed on the rear surface of the front cover, including a first special-shaped wall and a second special-shaped wall extending along the up and down direction, respectively arranged on the left and right sides of the circular hole;

The outer contour of the special-shaped hole is the same as that of the mounting frame;

The cover part also includes: a mounting cover, including a third special-shaped wall, a fourth special-shaped wall, and a rear wall plate between the third special-shaped wall and the fourth special-shaped wall, the outer contour of the installation cover is the same as that of the mounting frame , the third special-shaped wall passes through the special-shaped hole and is engaged and fixed with the first special-shaped wall, and the fourth special-shaped wall passes through the special-shaped hole and is engaged and fixed with the second special-shaped wall.

Optionally, the first special-shaped wall has a first vertical section, a first arc section and a second vertical section from top to bottom;

The second special-shaped wall has a third vertical section, a second arc section and a fourth vertical section from top to bottom;

The first arc section and the second arc section are respectively bent toward the side away from the circular hole, and the radius of the first arc section is greater than the radius of the second arc section, and the cylindrical part is close to the second arc The inner setting of the shape segment.

Optionally, vertical holes along the front and rear directions are also opened on the front cover, and protrusions are formed on the left and right sides of the vertical holes;

The mechanical rotary potentiometer includes: a second rotary cover and a potentiometer, the second rotary cover has a second cover body and a second docking cylinder extending backward from the second cover body, the potential device has a potentiometer and a second handle, The front end of the potentiometer extends forward to form a second handle, the second cover body is on the front side of the front cover, the second docking tube is inserted in the vertical hole, and the second rotating handle is inserted in the second docking tube.

Optionally, on the front cover, the circular hole and the vertical hole are symmetrically opened above the second elongated hole, and the first rotary cover and the second rotary cover are arranged symmetrically.

The present invention also provides a refrigerator, which has the aforementioned air duct cover plate assembly.

Optionally, the refrigerator also includes: a box body, which defines a refrigerated compartment and a freezer compartment along the up and down direction, and a temperature-changing drawer is arranged in the refrigerated compartment; , the first air chamber is used to supply air to the refrigerated compartment, the outlet end of the second air chamber is connected to the air supply duct of the refrigerated compartment; the inlet end of the sub-air duct communicates with the first air chamber, and the outlet end communicates with the temperature-changing drawer .

The air duct cover plate assembly and the refrigerator of the present invention define a main air duct and a sub-air duct in the cover part, the inlet end of the sub-air duct communicates with the main air duct, and a mechanical paddle type air door is provided to close the main air duct. It is divided into the first air chamber and the second air chamber, and the air volume entering the first air chamber and the second air chamber is adjusted by moving left and right. A mechanical rotary damper is set to adjust the air volume entering the sub-air duct by rotating, so that in Two different types of dampers are integrated on the same air duct cover assembly, and the two dampers can control the air supply to the three storage spaces, and are especially suitable for narrow-width refrigerators.

Furthermore, in the air duct cover plate assembly of the present invention, a first elongated hole across the left and right sides of the first groove is opened on the air duct plate, and a first elongated hole is opened on the front cover plate at a position corresponding to the first elongated hole. Two strip-shaped holes, the mechanical paddle damper is set to include a paddle, a vertical plate and a baffle, the vertical plate is sandwiched between the front cover plate and the air duct plate, and the paddle is inserted in the second long In the strip-shaped hole, the blocking piece is inserted in the first strip-shaped hole, and the structure of the mechanical paddle damper is simple and easy to configure.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a structural schematic diagram of a refrigerator with an air duct cover assembly according to an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of the air duct cover plate assembly and the temperature-variable drawer shown in Fig. 1 .

Fig. 3 is an exploded exploded schematic diagram of the air duct cover plate assembly and the temperature-variable drawer shown in Fig. 2 .

Fig. 4 is a schematic exploded exploded view of the air duct cover plate assembly shown in Fig. 1 .

FIG. 5 is an exploded exploded schematic view of some components of the air duct cover plate assembly shown in FIG. 1 .

Fig. 6 is a partially exploded exploded schematic view of some components of the air duct cover plate assembly shown in Fig. 1 .

FIG. 7 is a partially enlarged schematic view of some parts of the air duct cover plate assembly shown in FIG. 1 .

Detailed ways

FIG. 1 is a schematic structural view of a refrigerator 100 with an air duct cover assembly 200 according to an embodiment of the present invention. FIG. 2 is a partial structural diagram of the air duct cover assembly 200 and the temperature-variable drawer 112 shown in FIG. 1 . FIG. 3 is a schematic exploded view of the air duct cover plate assembly 200 and the temperature-variable drawer 112 shown in FIG. 2 . FIG. 4 is an exploded exploded view of the air duct cover assembly 200 shown in FIG. 1 . FIG. 5 is an exploded exploded view of some components of the air duct cover plate assembly 200 shown in FIG. 1 . FIG. 6 is a partially exploded exploded schematic view of some components of the air duct cover plate assembly 200 shown in FIG. 1 . FIG. 7 is a partially enlarged schematic view of some components of the air duct cover plate assembly 200 shown in FIG. 1 .

As shown in FIG. 1 and FIG. 2 , the air duct cover plate assembly 200 of the embodiment of the present invention includes: a cover plate part, a mechanical paddle damper 300 and a mechanical rotary damper 400 . A main air duct 206 and a sub-air duct 207 are defined inside the cover plate, and the inlet end of the sub-air duct 207 communicates with the main air duct 206 . The mechanical paddle damper 300 is configured to divide the main air duct 206 into a first air chamber 261 and a second air chamber 262 , and adjust the air volume entering the first air chamber 261 and the second air chamber 262 by moving left and right. The mechanical rotary damper 400 is configured to adjust the air volume entering the sub-air duct 207 by rotating. The air duct cover plate assembly 200 and the refrigerator 100 of the embodiment of the present invention define a main air duct 206 and a sub-air duct 207 in the cover part, and the inlet end of the sub-air duct 207 communicates with the main air duct 206, and a mechanical dial is provided. The flap damper 300 divides the main air duct 206 into the first air chamber 261 and the second air chamber 262 and adjusts the air volume entering the first air chamber 261 and the second air chamber 262 by moving left and right, and a mechanical rotary damper is provided 400 can be rotated to adjust the air volume entering the divided air duct 207, so that two different types of dampers are integrated on the same air duct cover assembly 200, and the two dampers can control the air supply to the three storage spaces, especially Suitable for refrigerators 100 of narrow width.

The air duct cover assembly 200 of the embodiment of the present invention can be disposed in a storage device having a storage space, such as the refrigerator 100 . The embodiment of the present invention also provides a refrigerator 100 having the aforementioned air duct cover assembly 200 . The refrigerator 100 is a storage device including a refrigeration system, and generally includes a box body, a door body (not shown in the figure) and a compression refrigeration system (not shown in the figure). The box body is composed of an outer shell, an inner liner, and a heat insulation layer between the outer shell and the inner liner. At least one storage compartment with an open front side is defined in the inner bag of the box body. There are usually multiple storage compartments, such as a refrigerated compartment 111, a freezer compartment (not shown), variable temperature compartments, and the like. The number and functions of specific storage compartments can be configured according to prior needs. The storage temperature of the refrigerated compartment 111 may be 2-9°C, or 4-7°C; the storage temperature of the freezer compartment may be -22-14°C, or -20--16°C. As shown in Figure 1, the liner of the box includes a refrigerated liner 101 and a refrigerated liner (not shown in the figure), and the refrigerated liner 101 and the refrigerated liner are arranged along the up and down direction, so that a line along the up and down direction is defined in the box. The refrigerated compartment 111 and the freezer compartment. A temperature-changing drawer 112 is arranged in the refrigerated compartment 111 . The air duct cover plate assembly 200 of the embodiment of the present invention is arranged in the inner tank 101 of the refrigerated compartment 111, the first air chamber 261 is used to supply air to the refrigerated compartment 111, and the outlet end of the second air chamber 262 is connected to the refrigerated compartment The air-supply duct (not shown in the figure); A drawer cover 113 is provided on the top of the temperature-changing drawer 112 , so that the refrigerating compartment 111 , the freezing compartment, and the temperature-varying drawer 112 respectively define an independent storage space. By connecting the inlet end of the air distribution channel 207 with the first air chamber 261, the air volume of the temperature-variable drawer 112 is relatively controlled by the mechanical paddle damper 300, thereby avoiding uncontrolled overcooling of the temperature-variable drawer 112.

The air duct cover plate assembly 200 of the embodiment of the present invention further includes: a mechanical rotary potentiometer 500 configured to adjust the target temperature of the storage space by rotating. In FIG. 1 , the mechanical rotary potentiometer 500 controls the temperature of the refrigerated compartment 111 by controlling the compressor gear. The refrigerator 100 only sets a temperature sensor for the refrigerated compartment 111, and the program only collects the temperature of the refrigerated compartment 111, so the mechanical paddle damper 300 controls the air volume of the first air chamber 261 and the second air chamber 262 of the main air duct 206. The distribution will directly affect the temperature of the freezer compartment, that is, the mechanical paddle damper 300 is used to regulate the temperature of the freezer compartment. A mechanical rotary damper 400 is used to control the temperature of the variable temperature drawer 112 . The refrigerator 100 of the embodiment of the present invention integrates the temperature control operations of three independent storage spaces on the air duct cover assembly 200 located in the refrigerated compartment 111, and the user can operate the mechanical paddle of the air duct cover assembly 200 Type damper 300, mechanical rotary potentiometer 500 and mechanical rotary damper 400 to control the temperature of the freezing zone, refrigerating zone and variable temperature zone of the entire refrigerator 100. The space layout of the control structure is reasonable and compact. The temperature control of the three temperature zones is realized in the space, and the precise control of the temperature of the refrigeration system is guaranteed. At the same time, the mechanical structure is mainly used for control. The structure is simple, the cost is low, and it can be popularized and replicated. This structure can be used in space It can also be used on wider air ducts in restricted narrow air ducts.

In some embodiments, in the air channel cover plate assembly 200 of the embodiment of the present invention, the cover plate part includes: an air channel plate 201 and a rear cover plate 202 , and the rear cover plate 202 is disposed on the rear side of the air channel plate 201 . A first groove 211 is formed on the air channel plate 201 , with its opening facing backward and extending in the vertical direction. A main air channel 206 is defined between the rear cover plate 202 and the first groove 211 . On the lateral side of the first groove 211, the air duct plate 201 is also formed with a second groove 212 that opens backward and extends along the up and down direction. The upper end of the second groove 212 communicates with the first groove 211. An air distribution channel 207 is defined between the rear cover 202 and the second groove 212 . As shown in Figures 3 and 5, a rear end plate 208 is also provided behind the lower part of the first groove 211 of the air channel plate 201, and a lower end plate 209 with an air outlet 290 is arranged below the rear end plate 208, and the air outlet 290 is connected to the air supply duct of the freezer compartment.

As shown in FIG. 4 and FIG. 5 , in the air duct cover plate assembly 200 of the embodiment of the present invention, the cover plate part further includes: a front cover plate 203 disposed on the front side of the air duct plate 201 .

As shown in FIG. 2 and FIG. 4 , the end of the second groove 212 of the air channel plate 201 is formed with an air outlet 270 along the front and rear directions. As shown in Figure 2, an air outlet 235 is formed at the position corresponding to the air outlet 270 on the front cover 203, the inlet end of the air outlet 235 is connected to the air outlet 270, and the outlet end extends to the gap of the rear end plate of the temperature-variable drawer 112 1120, thereby delivering cold air to the temperature-changing drawer 112.

In some embodiments, in the air duct cover plate assembly 200 of the embodiment of the present invention, the air duct plate 201 is provided with a first elongated hole 213 along the front and back direction across the first groove 211, and the front cover plate A second elongated hole 231 is opened on the 203 at a position corresponding to the first elongated hole 213 . The mechanical paddle damper 300 includes: a paddle 301, a vertical plate 302 and a blocking piece 303, wherein the vertical plate 302 is sandwiched between the front cover plate 203 and the air duct plate 201, and the paddle 301 is inserted in the second strip In the shaped hole 231 , the blocking piece 303 is inserted in the first elongated hole 213 . In the air duct cover plate assembly 200 of the embodiment of the present invention, the first elongated hole 213 across the first groove 211 is opened on the air duct plate 201, and the first elongated hole 213 is corresponding to the first elongated hole 213 on the front cover plate 203. A second elongated hole 231 is opened at the position where the mechanical paddle damper 300 is set to include a paddle 301, a vertical plate 302 and a baffle 303, and the vertical plate 302 is sandwiched between the front cover plate 203 and the air channel plate 201, the pick 301 is inserted in the second elongated hole 231, and the blocking piece 303 is inserted in the first elongated hole 213. The structure of the mechanical pick damper 300 is simple and easy to configure. By manually turning the paddle 301 on the front of the front cover 203 to change the lateral position of the baffle 303, the flow of the first air chamber 261 and the second air chamber 262 can be changed, thereby balancing the refrigerating compartment 111 and the freezing compartment. air volume.

As shown in Figure 7, the rear surface of the front cover plate 203 is formed with a guide frame 236 on the peripheral side of the second elongated hole 231, and the guide walls on the upper and lower sides of the guide frame 236 face the second elongated hole 231 toward A hook 237 is formed on the side, and the vertical board 302 is clamped in the guide frame 236 via the hook 237 , so that the vertical board 302 can move left and right in the guide frame 236 . The air duct plate 201 can also be provided with a sealing plate 304 on the rear side of the first elongated hole 213 , and the front cover plate 203 can also be provided with a sealing ring 305 around the guide frame 236 .

In some embodiments, in the air duct cover plate assembly 200 of the embodiment of the present invention, a circular hole 232 along the front-to-back direction is opened on the front cover plate 203 corresponding to the second groove 212, and the air duct plate 201 corresponds to A special-shaped hole 214 is formed at the position of the circular hole 232 . The mechanical rotary damper 400 includes: a first rotary cover 401 and a damper 402. The first rotary cover 401 has a first cover body 411 and a first butt joint 412 extending backward from the first cover body 411. The damper 402 has a column Shaped part 421, air door 422, first rotary handle 423 and hook 424, the rotation central axis of cylindrical part 421 is arranged along the front and rear direction, its side extends outwards to form air door 422, and its front end center extends forward to form first rotary The front end of the handle 423 extends forward to form a hook 424 . The first cover body 411 is located on the front side of the front cover plate 203, the first docking cylinder 412 is inserted in the circular hole 232, the cylindrical part 421 and the damper 422 are located in the second groove 212, and the first handle 423 is inserted Inside the first connecting barrel 412 , the hook 424 is connected with the front cover 203 around the circular hole 232 . Usually, the first handle 423 has a non-circular longitudinal section, and correspondingly, the first docking barrel 412 has a non-circular longitudinal section. By inserting the first rotating handle 423 into the first docking cylinder 412, the hook 424 is connected with the front cover 203 on the side of the circular hole 232, so that when the user rotates the first rotating cover 401, the damper 402 can be driven to rotate together. , so that the position of the damper 422 changes.

In the air duct cover plate assembly 200 of the embodiment of the present invention, the rear surface of the front cover plate 203 is formed with a mounting frame 205, including a first special-shaped wall 251 and a second special-shaped wall 251 extending in the up and down direction respectively arranged on the left and right sides of the circular hole 232. Two special-shaped walls 252. The outer contour of the special-shaped hole 214 is the same as that of the mounting frame 205 . The cover part also includes: the installation cover 204, including the third special-shaped wall 241, the fourth special-shaped wall 242, and the rear wall plate 243 between the third special-shaped wall 241 and the fourth special-shaped wall 242, the outer contour of the installation cover 204 The outer contour of the mounting bracket 205 is the same, the third special-shaped wall 241 is engaged with the first special-shaped wall 251 through the special-shaped hole 214 , and the fourth special-shaped wall 242 is fixed with the second special-shaped wall 252 through the special-shaped hole 214 . By forming the installation frame 205 at the circular hole 232 of the front cover plate 203 and correspondingly setting the installation cover 204 , it is more convenient to install the damper 402 of the mechanical rotary damper 400 . At the same time, by arranging the installation frame 205 and the installation cover 204, a structure is constructed in the air distribution channel 207 to make the damper 422 more convenient to adjust the air volume. As shown in Figure 7, a snap-in protrusion 253 is formed on the first special-shaped wall 251 and the second special-shaped wall 252, and a snap-in interface 244 is formed on the third special-shaped wall 241 and the fourth special-shaped wall 242, and the snap-in protrusion 253 fits in the card interface 244 to realize the fixing of the installation cover 204 and the installation frame 205 .

Referring to Fig. 7, in some embodiments, the first special-shaped wall 251 has a first vertical section 2511, a first arc section 2512 and a second vertical section 2513 from top to bottom; There are a third vertical section 2521, a second arc section 2522 and a fourth vertical section 2523 up and down; the first arc section 2512 and the second arc section 2522 face away from the circular hole 232 respectively One side is curved, and the radius of the first arc section 2512 is greater than the radius of the second arc section 2522 , and the cylindrical part 421 is disposed against the inner side of the second arc section 2522 . It can be understood that the shape of the third special-shaped wall 241 is the same as that of the first special-shaped wall 251 , and the shape of the fourth special-shaped wall 242 is the same as that of the second special-shaped wall 252 . In FIG. 7, an upper opening is defined between the first vertical section 2511 and the third vertical section 2521, a lower opening is defined between the second vertical section 2513 and the fourth vertical section 2523, and the column The shaped part 421 is set against the inner side of the second arc section 2522. When the first rotating cover 401 drives the damper 402 to rotate as a whole, the damper 422 can be controlled to be in the upper opening, the inner side of the first arc section 2512, and the lower side. Different positions between openings. When the damper 402 rotates until the damper 422 is at the junction of the lower opening and the first arc section 2512, the sub-air duct 207 is closed; when the damper 422 rotates upwards, the distance between it and the first arc section 2512 As the air distribution channel 207 increases, the air distribution channel 207 is gradually opened, so that the air volume of the air distribution channel 207 can be controlled by controlling the rotation position of the damper 422 .

In some embodiments, in the air duct cover assembly 200 of the embodiment of the present invention, the front cover 203 is further provided with vertical holes 233 along the front and rear directions, and protrusions 234 are formed on the left and right sides of the vertical holes 233 . The mechanical rotary potentiometer 500 includes: a second rotary cover 501 and a potentiometer 502, the second rotary cover 501 has a second cover body 511 and a second docking cylinder 512 extending backward from the second cover body 511, the potential device 502 has The potentiometer 521 and the second handle 522, the front end of the potentiometer 521 extends forward to form the second handle 522, the second cover body 511 is located on the front side of the front cover 203, and the second docking cylinder 512 is inserted into the vertical hole 233 , the second handle 522 is inserted into the second docking cylinder 512 . Usually, the second handle 522 has a non-circular longitudinal section, and correspondingly, the second docking barrel 512 has a non-circular longitudinal section. A notch is formed on the air duct plate 201 at a position corresponding to the potentiometer 521 .

As shown in Figures 1 and 2, in the air duct cover plate assembly 200 of the embodiment of the present invention, on the front cover plate 203, a circular hole 232 and a vertical hole 233 are arranged symmetrically above the second elongated hole 231. , the first rotating cover 401 and the second rotating cover 501 are symmetrically arranged. By arranging the first rotary cover 401 and the second rotary cover 501 symmetrically on the left and right sides of the second elongated hole 231, the damper 402 and the potential device 502 are distributed on the left and right sides of the main air duct 206, so that the air duct The front of the cover plate assembly 200 is left-right symmetrical and has a good appearance effect.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

An air duct cover plate assembly, comprising:

A cover plate portion, defining a main air duct and a sub-air duct inside, and the inlet end of the sub-air duct communicates with the main air duct;

a mechanical paddle damper configured to divide the main air duct into a first air chamber and a second air chamber, and adjust the air volume entering the first air chamber and the second air chamber by moving left and right; and

The mechanical rotary damper is configured to adjust the air volume entering the sub-air duct by rotating.
The air duct cover assembly according to claim 1, wherein:

The air duct cover plate assembly is arranged in a storage device with a storage space;

The air duct cover assembly further includes: a mechanical rotary potentiometer configured to adjust the target temperature of the storage space through rotation.
The air duct cover assembly according to claim 2, wherein,

The cover plate part includes: an air channel plate and a rear cover plate, and the rear cover plate is arranged on the rear side of the air channel plate;

A first groove is formed on the air channel plate with an opening extending backward and along the up and down direction, and the main air channel is defined between the rear cover plate and the first groove;

On the lateral side of the first groove, the air channel plate is also formed with a second groove that opens backward and extends along the up and down direction. The upper end of the second groove is connected to the first groove. The air distribution channel is defined between the rear cover plate and the second groove.
The air duct cover assembly according to claim 3, wherein:

The cover plate part also includes: a front cover plate arranged on the front side of the air channel plate;

The air duct plate is provided with a first elongated hole spanning the left and right sides of the first groove along the front and rear directions, and a first elongated hole is provided on the front cover plate corresponding to the first elongated hole. Two long strip holes;

The mechanical paddle damper includes: a paddle, a vertical plate and a baffle, wherein the vertical plate is interposed between the front cover plate and the air duct plate, and the paddle is inserted into the In the second elongated hole, the blocking piece is inserted in the first elongated hole.
The air duct cover assembly according to claim 4, wherein:

A circular hole along the front-rear direction is opened on the front cover plate corresponding to the second groove, and a special-shaped hole is formed on the air duct plate corresponding to the circular hole;

The mechanical rotary damper includes: a first rotary cover and a damper part, the first rotary cover has a first cover body and a first docking cylinder extending backward from the first cover body, and the damper part has a post Shaped part, air door, first rotary handle and hook, the central axis of rotation of the cylindrical part is set along the front and rear direction, its side extends outward to form the air door, and the center of its front end extends forward to form the first rotary handle, the periphery of its front end extends forward to form the hook; the first cover body is on the front side of the front cover, the first docking cylinder is inserted into the circular hole, and the post The shaped part and the damper are in the second groove, the first handle is inserted in the first docking cylinder, and the hook is connected with the front cover on the side of the circular hole. connected.
The air duct cover assembly according to claim 5, wherein:

A mounting frame is formed on the rear surface of the front cover, including a first special-shaped wall and a second special-shaped wall extending along the up and down direction, respectively arranged on the left and right sides of the circular hole;

The outer contour of the special-shaped hole is the same as the outer contour of the mounting frame;

The cover part also includes: a mounting cover, including a third special-shaped wall, a fourth special-shaped wall, and a rear wall between the third special-shaped wall and the fourth special-shaped wall, the outer surface of the installation cover The contour is the same as the outer contour of the mounting frame, the third special-shaped wall is engaged and fixed with the first special-shaped wall through the special-shaped hole, and the fourth special-shaped wall is fixed with the first special-shaped wall through the special-shaped hole. The two special-shaped walls are engaged and fixed.
The air duct cover assembly according to claim 6, wherein,

The first special-shaped wall has a first vertical section, a first arc section and a second vertical section from top to bottom;

The second special-shaped wall has a third vertical section, a second arc section and a fourth vertical section from top to bottom;

The first arc-shaped section and the second arc-shaped section are respectively curved toward the side away from the circular hole, and the radius of the first arc-shaped section is larger than that of the second arc-shaped section Radius, the cylindrical portion is disposed against the inner side of the second arc section.
The air duct cover plate assembly according to any one of claims 5-7, wherein,

The front cover plate is also provided with vertical holes along the front and rear directions, and protrusions are formed on the left and right sides of the vertical holes;

The mechanical rotary potentiometer includes: a second rotary cover and a potentiometer, the second rotary cover has a second cover body and a second docking cylinder extending backward from the second cover body, and the potential device has A potentiometer and a second handle, the front end of the potentiometer extends forward to form the second handle, the second cover body is on the front side of the front cover, and the second docking sleeve is inserted into the In the vertical hole, the second handle is inserted into the second docking cylinder.
The air duct cover assembly according to claim 8, wherein:

On the front cover, the circular hole and the vertical hole are symmetrically opened above the second elongated hole, and the first rotating cover and the second rotating cover are arranged symmetrically.
A refrigerator, comprising the air duct cover plate assembly according to any one of claims 1-9.
The refrigerator according to claim 10, further comprising:

The box body defines a refrigerated compartment and a frozen compartment along the up and down direction, and a temperature-changing drawer is arranged in the refrigerated compartment; wherein

The air duct cover assembly is arranged in the inner tank of the refrigerated compartment, the first air chamber is used to supply air to the refrigerated compartment, and the outlet end of the second air chamber is connected to the freezer compartment The air supply duct of the chamber; the inlet end of the air distribution duct communicates with the first air cavity, and the outlet end communicates with the temperature-variable drawer.