CN216409449U

CN216409449U - Air duct cover plate assembly and refrigerator

Info

Publication number: CN216409449U
Application number: CN202122744536.2U
Authority: CN
Inventors: 曹永宁; 阚涛; 姜峰
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-29
Anticipated expiration: 2031-11-10
Also published as: WO2023082814A1

Abstract

The utility model provides an air duct cover plate assembly and a refrigerator, wherein the air duct cover plate assembly comprises: the cover plate part is internally provided with a main air duct and an air dividing duct, and the inlet end of the air dividing duct is communicated with the main air duct; the mechanical shifting piece type air door is configured to divide the main air duct into a first air cavity and a second air cavity, and the air quantity entering the first air cavity and the second air cavity is adjusted through left-right movement; and a mechanical rotary damper configured to regulate an amount of air entering the branch duct by rotating. The air duct cover plate assembly integrates two different types of air doors on the same air duct cover plate assembly, the two types of air doors can control air supply to three storage spaces, and the air duct cover plate assembly is particularly suitable for a refrigerator with narrow width.

Description

Air duct cover plate assembly and refrigerator

Technical Field

The utility model relates to the technical field of refrigerating and freezing devices, in particular to an air duct cover plate assembly and a refrigerator.

Background

The temperature control mode of the freezing chamber of the existing low-end refrigerator is that a movable horizontal baffle is arranged in a main air path of a refrigerating air channel to distribute the air quantity of the refrigerating chamber and the freezing chamber, so that the freezing temperature is controlled, the baffle structure is mostly in a mode of matching a knob with a gear rack, the occupied space is often large, and the refrigerator is not suitable for the refrigerator with the particularly narrow refrigerating air channel.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide an air duct cover assembly having multiple dampers.

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

In particular, the present invention provides a duct cover assembly comprising:

the cover plate part is internally provided with a main air duct and an air dividing duct, and the inlet end of the air dividing duct is communicated with the main air duct;

the mechanical shifting piece type air door is configured to divide the main air duct into a first air cavity and a second air cavity, and the air quantity entering the first air cavity and the second air cavity is adjusted through left and right movement; and

and the mechanical rotary air door is configured to adjust the air quantity entering the air dividing channel through rotation.

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

the wind channel cover plate assembly still includes: and a mechanical rotary potentiometer configured to adjust a target temperature of the storage space by rotation.

Optionally, the cover plate portion comprises: the rear cover plate is arranged on the rear side of the air duct plate;

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

a second groove with a backward opening and extending in the up-down direction is formed on the air duct plate on one transverse side of the first groove, the upper end of the second groove is communicated with the first groove, and an air dividing duct is defined between the rear cover plate and the second groove.

Optionally, the cover plate portion further comprises: the front cover plate is arranged on the front side of the air duct plate;

the air duct plate is provided with first strip-shaped holes crossing the left and right sides of the first groove along the front-back direction, and the front cover plate is provided with second strip-shaped holes corresponding to the first strip-shaped holes;

mechanical plectrum formula air door includes: the shifting piece, the vertical plate and the blocking piece are arranged between the front cover plate and the air duct plate in a clamping mode, the shifting piece is inserted into the second elongated hole, and the blocking piece is inserted into the first elongated hole.

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

the mechanical rotary damper includes: the first rotary cover is provided with a first cover body and a first butt joint barrel extending backwards from the first cover body, the air door piece is provided with a cylindrical part, an air door, a first rotary handle and a clamping hook, a rotary central shaft of the cylindrical part is arranged along the front-back direction, the side surface of the rotary central shaft extends outwards to form the air door, the center of the front end of the rotary central shaft extends forwards to form the first rotary handle, and the periphery of the front end of the rotary central shaft extends forwards to form the clamping hook; the first cover body is located on the front side of the front cover plate, the first butt joint barrel is inserted into the circular hole, the cylindrical portion and the air damper are located in the second groove, the first rotary handle is inserted into the first butt joint barrel, and the clamping hook is connected with the front cover plate on the periphery side of the circular hole.

Optionally, the rear surface of the front cover plate is formed with a mounting bracket, which includes a first special-shaped wall and a second special-shaped wall that are respectively disposed on the left and right sides of the circular hole and extend in the up-down direction;

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

the apron portion still includes: the mounting cover comprises a third special-shaped wall, a fourth special-shaped wall and a rear wall plate located between the third special-shaped wall and the fourth special-shaped wall, the outer contour of the mounting cover is the same as that of the mounting frame, the third special-shaped wall penetrates through the special-shaped hole to be fixedly clamped with the first special-shaped wall, and the fourth special-shaped wall penetrates through the special-shaped hole to be fixedly clamped with the second special-shaped wall.

Optionally, the first contoured wall has, from top to bottom, a first vertical section, a first arcuate section, and a second vertical section;

the second special-shaped wall is provided with a third vertical section, a second arc-shaped section and a fourth vertical section from top to bottom;

the first arc-shaped section and the second arc-shaped section are respectively bent towards one side far away from the circular hole, the radius of the first arc-shaped section is larger than that of the second arc-shaped section, and the cylindrical part is arranged by abutting against the inner side of the second arc-shaped section.

Optionally, the front cover plate is further provided with a vertical hole along the front-back direction, and the left side and the right side of the vertical hole are provided with bulges;

the mechanical rotary potentiometer comprises: the second rotary cover is provided with a second cover body and a second butt joint cylinder extending backwards from the second cover body, the potential device is provided with a potentiometer and a second rotary handle, the front end of the potentiometer extends forwards to form a second rotary handle, the second cover body is located on the front side of the front cover plate, the second butt joint cylinder is inserted into the vertical hole, and the second rotary handle is inserted into the second butt joint cylinder.

Optionally, on the front shroud, circular port and perpendicular shape hole bilateral symmetry set up in the top in second rectangular shape hole, first rotatory lid and the rotatory lid bilateral symmetry of second set up.

The utility model also provides a refrigerator which is provided with the air duct cover plate assembly.

Optionally, the refrigerator further comprises: the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber, wherein the refrigerating chamber and the freezing chamber are limited in the box body along the vertical direction, and a temperature-changing drawer is arranged in the refrigerating chamber; the air duct cover plate assembly is arranged in the inner container of the refrigerating chamber, the first air cavity is used for supplying air to the refrigerating chamber, and the outlet end of the second air cavity is in butt joint with an air supply air duct of the freezing chamber; the inlet end of the air dividing channel is communicated with the first air cavity, and the outlet end of the air dividing channel is communicated with the variable temperature drawer.

According to the air duct cover plate assembly and the refrigerator, the main air duct and the air dividing duct are limited in the cover plate part, the inlet end of the air dividing duct is communicated with the main air duct, the mechanical plectrum type air door is arranged to divide the main air duct into the first air chamber and the second air chamber, the air quantity entering the first air chamber and the second air chamber is adjusted through left and right movement, the mechanical rotary type air door is arranged to adjust the air quantity entering the air dividing duct through rotation, so that two air doors of different types are integrated on the same air duct cover plate assembly, the two air doors can control air supply to three storage spaces, and the air duct cover plate assembly and the refrigerator are particularly suitable for narrow-width refrigerators.

Further, according to the air duct cover plate assembly, the first strip-shaped hole which stretches across the left side and the right side of the first groove is formed in the air duct plate, the second strip-shaped hole is formed in the position, corresponding to the first strip-shaped hole, of the front cover plate, the mechanical shifting piece type air door is formed to comprise the shifting piece, the vertical plate and the blocking piece, the vertical plate is clamped between the front cover plate and the air duct plate, the shifting piece is inserted into the second strip-shaped hole, and the blocking piece is inserted into the first strip-shaped hole.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a refrigerator having an air duct cover plate assembly according to an embodiment of the present invention.

FIG. 2 is a schematic view of a portion of the duct cover assembly and temperature change drawer shown in FIG. 1.

FIG. 3 is an exploded schematic view of the duct cover assembly and temperature change drawer of FIG. 2.

FIG. 4 is an exploded schematic view of the air chute cover assembly shown in FIG. 1.

FIG. 5 is an exploded view of a portion of the components of the air duct cover assembly shown in FIG. 1.

FIG. 6 is a partially exploded, partially exploded view of the components of the duct cover assembly shown in FIG. 1.

FIG. 7 is an enlarged, fragmentary schematic view of a portion of the components of the duct flap assembly shown in FIG. 1.

Detailed Description

Fig. 1 is a schematic structural view of a refrigerator 100 having an air duct cover plate assembly 200 according to an embodiment of the present invention. FIG. 2 is a schematic partial structural view of the duct cover assembly 200 and the temperature change drawer 112 shown in FIG. 1. FIG. 3 is an exploded schematic view of the duct cover assembly 200 and the temperature change drawer 112 shown in FIG. 2. FIG. 4 is an exploded schematic view of the air duct cover plate assembly 200 shown in FIG. 1. FIG. 5 is an exploded view of a portion of the components of the duct cover assembly 200 shown in FIG. 1. FIG. 6 is a partially exploded, schematic view of the components of the duct cover assembly 200 shown in FIG. 1. FIG. 7 is an enlarged, fragmentary schematic view of a portion of the components of the duct flap assembly 200 shown in FIG. 1.

As shown in fig. 1 and 2, a duct cover assembly 200 according to an embodiment of the present invention includes: a cover portion, a mechanical paddle damper 300, and a mechanical rotary damper 400. The cover portion has a main air passage 206 and a sub air passage 207 defined therein, and an inlet end of the sub air passage 207 communicates with the main air passage 206. The mechanical paddle damper 300 is configured to divide the main duct 206 into a first air chamber 261 and a second air chamber 262, and to regulate the amount of air 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 regulate the amount of air entering the branched duct 207 by being rotated. The air duct cover plate assembly 200 and the refrigerator 100 of the embodiment of the utility model limit the main air duct 206 and the branch air duct 207 in the cover plate part, the inlet end of the branch air duct 207 is communicated with the main air duct 206, the mechanical plectrum type air door 300 is arranged to divide the main air duct 206 into the first air cavity 261 and the second air cavity 262, the air quantity entering the first air cavity 261 and the second air cavity 262 is adjusted by moving left and right, the mechanical rotary air door 400 is arranged to adjust the air quantity entering the branch air duct 207 by rotating, so that two different types of air doors are integrated on the same air duct cover plate assembly 200, the two types of air doors can control the air supply of three storage spaces, and the air duct cover plate assembly is particularly suitable for the refrigerator 100 with narrow width.

The air duct cover plate assembly 200 according to the embodiment of the utility model may be disposed in a storage device having a storage space, such as the refrigerator 100. The embodiment of the utility model further provides a refrigerator 100 which is provided with the air duct cover plate assembly 200. The refrigerator 100 is a storage apparatus including a refrigeration system, and generally includes a cabinet, a door (not shown), and a compression refrigeration system (not shown). The box body is composed of a shell, an inner container, a heat insulation layer positioned between the shell and the inner container and the like. At least one storage compartment with an open front side is defined in the inner container of the box body. The storage compartment is usually a plurality of compartments, such as a refrigerating compartment 111, a freezing compartment (not shown), a temperature-changing compartment, and the like. The number and function of the specific storage compartments can be configured according to pre-determined requirements. The preservation temperature of the refrigerating chamber 111 can be 2-9 ℃, or can be 4-7 ℃; the storage temperature of the freezing chamber can be-22 to-14 ℃ or-20 to-16 ℃. As shown in fig. 1, the inner container of the box body includes a refrigerating inner container 101 and a freezing inner container (not shown), and the refrigerating inner container 101 and the freezing inner container are vertically disposed so that a refrigerating chamber 111 and a freezing chamber are vertically defined in the box body. A variable temperature drawer 112 is arranged in the refrigerating compartment 111. The air duct cover plate assembly 200 of the embodiment of the utility model is arranged in the inner container 101 of the refrigerating compartment 111, the first air cavity 261 is used for supplying air to the refrigerating compartment 111, and the outlet end of the second air cavity 262 is butted with an air supply air duct (not shown in the figure) of the freezing compartment; the inlet end of the air dividing duct 207 is communicated with the first air chamber 261, and the outlet end is communicated with the temperature change drawer 112. The drawer cover 113 is disposed at the top of the variable temperature drawer 112, so that the refrigerating compartment 111, the freezing compartment and the variable temperature drawer 112 respectively define an independent storage space. The inlet end of the air dividing channel 207 is communicated with the first air cavity 261, so that the air volume of the temperature-changing drawer 112 is relatively controlled by the mechanical plectrum type air door 300, and the uncontrolled supercooling phenomenon of the temperature-changing drawer 112 is avoided.

The air duct cover plate assembly 200 of the embodiment of the present invention further includes: and a mechanical rotary potentiometer 500 configured to adjust a target temperature of the storage space by rotation. In fig. 1, the mechanical rotary potentiometer 500 controls the temperature of the refrigeration compartment 111 by controlling the compressor gear. In the refrigerator 100, only the temperature sensor is arranged in the refrigerating chamber 111, and only the temperature of the refrigerating chamber 111 is collected by a program, so that the distribution of the air volume of the mechanical plectrum type air door 300 to the first air cavity 261 and the second air cavity 262 of the main air duct 206 directly affects the temperature of the refrigerating chamber, that is, the mechanical plectrum type air door 300 is used for regulating and controlling the temperature of the refrigerating chamber. The mechanical rotary damper 400 is used to control the temperature of the temperature change drawer 112. The refrigerator 100 of the embodiment of the utility model integrates the temperature control operation of three independent storage spaces on the air duct cover plate assembly 200 positioned in the refrigerating chamber 111, and a user can control the temperatures of a freezing area, a refrigerating area and a variable temperature area of the whole refrigerator 100 by operating the mechanical dial plate type air door 300, the mechanical rotary potentiometer 500 and the mechanical rotary air door 400 of the air duct cover plate assembly 200, so that the control structure space layout is reasonable and compact, the temperature control of three temperature areas is realized in the limited space of the air duct cover plate assembly 200, the accurate control of the temperature of a refrigerating system is ensured, meanwhile, the mechanical structure control is mainly adopted, the structure is simple, the cost is low, the popularization and reproducibility are strong, the structure can be used on a narrow air duct with limited space, and also can be used on a wider air duct.

In some embodiments, in the air duct cover plate assembly 200 of the present invention, the cover plate portion includes: the wind tunnel comprises a wind tunnel plate 201 and a rear cover plate 202, wherein the rear cover plate 202 is arranged on the rear side of the wind tunnel plate 201. The air duct plate 201 is formed with a first groove 211 that is opened backward and extends in the vertical direction, and a main air duct 206 is defined between the rear cover plate 202 and the first groove 211. A second groove 212 which is opened backwards and extends in the up-down direction is formed on the air duct plate 201 on one side of the first groove 211 in the transverse direction, the upper end of the second groove 212 is communicated with the first groove 211, and an air dividing duct 207 is defined between the rear cover plate 202 and the second groove 212. As shown in fig. 3 and 5, a rear end plate 208 is further disposed behind the lower portion of the first recess 211 of the air duct plate 201, a lower end plate 209 having an air outlet 290 is disposed below the rear end plate 208, and the air outlet 290 is abutted to an air duct of the freezing compartment.

As shown in fig. 4 and 5, in the air duct cover plate assembly 200 according to the embodiment of the present invention, the cover plate portion further includes: and a front cover 203 provided on the front side of the air duct plate 201.

As shown in fig. 2 and 4, the end of the second groove 212 of the air duct plate 201 is formed with an air outlet 270 in the front-rear direction. As shown in fig. 2, an air outlet cylinder 235 is formed on the front cover plate 203 at a position corresponding to the air outlet 270, an inlet end of the air outlet cylinder 235 is abutted to the air outlet 270, and an outlet end extends to a notch 1120 of a rear end plate of the temperature change drawer 112, so as to convey cold air into the temperature change drawer 112.

In some embodiments, in the air duct flap assembly 200 according to the embodiment of the present invention, the air duct plate 201 is provided with a first elongated hole 213 crossing the left and right of the first groove 211 along the front-back direction, and the front flap 203 is provided with a second elongated hole 231 at a position corresponding to the first elongated hole 213. The mechanical paddle damper 300 includes: the shifting piece 301, the vertical plate 302 and the blocking piece 303, wherein the vertical plate 302 is clamped between the front cover plate 203 and the air duct plate 201, the shifting piece 301 is inserted into the second elongated hole 231, and the blocking piece 303 is inserted into the first elongated hole 213. In the air duct cover plate assembly 200 according to the embodiment of the present invention, the air duct plate 201 is provided with the first elongated hole 213 crossing the left and right of the first groove 211, the front cover plate 203 is provided with the second elongated hole 231 at a position corresponding to the first elongated hole 213, the mechanical flap type air door 300 is configured to include the flap 301, the vertical plate 302 and the blocking piece 303, the vertical plate 302 is clamped between the front cover plate 203 and the air duct plate 201, the flap 301 is inserted into the second elongated hole 231, and the blocking piece 303 is inserted into the first elongated hole 213, so that the mechanical flap type air door 300 has a simple structure and is easy to configure. The transverse position of the blocking piece 303 is changed by manually shifting the shifting piece 301 on the front surface of the front cover plate 203, so that the flow rate of the first air cavity 261 and the second air cavity 262 can be changed, and the air volume of the refrigerating chamber 111 and the freezing chamber is further balanced.

As shown in fig. 7, a guide frame 236 is formed on the rear surface of the front cover 203 on the periphery of the second elongated hole 231, a hook 237 is formed on the guide walls on the upper and lower sides of the guide frame 236 toward the second elongated hole 231, and the vertical plate 302 is clamped in the guide frame 236 via the hook 237, so that the vertical plate 302 can move left and right in the guide frame 236. The air duct plate 201 may further include a sealing plate 304 at a rear side of the first elongated hole 213, and the front cover plate 203 may further include a sealing ring 305 at a circumference of the guide frame 236.

In some embodiments, in the air duct cover plate assembly 200 according to the embodiment of the present invention, a circular hole 232 is formed in the front cover plate 203 at a position corresponding to the second groove 212 along the front-back direction, and a special-shaped hole 214 is formed in the air duct plate 201 at a position corresponding to the circular hole 232. The mechanical rotary damper 400 includes: the first rotary cover 401 and the damper member 402, the first rotary cover 401 has a first cover body 411 and a first butt cylinder 412 extending backward from the first cover body 411, the damper member 402 has a cylindrical portion 421, a damper 422, a first rotary handle 423 and a hook 424, a rotation center axis of the cylindrical portion 421 is arranged along a front-rear direction, a side surface thereof extends outward to form the damper 422, a front end center thereof extends forward to form the first rotary handle 423, and a front end periphery thereof extends forward to form the hook 424. The first cover body 411 is located on the front side of the front cover plate 203, the first butt cylinder 412 is inserted into the circular hole 232, the column 421 and the damper 422 are located in the second groove 212, the first rotary handle 423 is inserted into the first butt cylinder 412, and the hook 424 is connected with the front cover plate 203 on the peripheral side of the circular hole 232. Typically, the first knob 423 has a non-circular longitudinal cross-section and correspondingly the first docking barrel 412 has a non-circular longitudinal cross-section. By inserting the first rotary handle 423 into the first docking barrel 412, the hook 424 is connected to the front cover plate 203 on the circumferential side of the circular hole 232, so that a user can rotate the first rotary cover 401 to drive the damper member 402 to rotate together, thereby changing the position of the damper 422.

In the air duct cover plate assembly 200 according to the embodiment of the present invention, the mounting frame 205 is formed on the rear surface of the front cover plate 203, and includes a first irregular wall 251 and a second irregular wall 252 which are respectively disposed on the left and right sides of the circular hole 232 and extend in the up-down direction. The profile hole 214 has the same outer profile as the mounting bracket 205. The apron portion still includes: the mounting cover 204 comprises a third shaped wall 241, a fourth shaped wall 242 and a rear wall plate 243 between the third shaped wall 241 and the fourth shaped wall 242, the outer contour of the mounting cover 204 is the same as that of the mounting frame 205, the third shaped wall 241 is fixed with the first shaped wall 251 through the shaped hole 214 in a clamping manner, and the fourth shaped wall 242 is fixed with the second shaped wall 252 through the shaped hole 214 in a clamping manner. By forming the mounting frame 205 at the circular hole 232 of the front cover plate 203, the mounting cover 204 is correspondingly provided, so that the installation of the damper piece 402 of the mechanical rotary damper 400 is more facilitated. Meanwhile, a structure for facilitating the air quantity regulation of the air door 422 is constructed in the air dividing duct 207 by arranging the mounting frame 205 and the mounting cover 204. As shown in fig. 7, a clamping protrusion 253 is formed on the first shaped wall 251 and the second shaped wall 252, a clamping interface 244 is formed on the third shaped wall 241 and the fourth shaped wall 242, and the clamping protrusion 253 is matched in the clamping interface 244 to realize the fixation of the mounting cover 204 and the mounting frame 205.

Referring to fig. 7, in some embodiments, the first contoured wall 251 has, from top to bottom, a first vertical section 2511, a first arcuate section 2512, and a second vertical section 2513; the second contoured wall 252 has, from top to bottom, a third vertical section 2521, a second arcuate section 2522, and a fourth vertical section 2523; the first and second

arcuate sections

2512 and 2522 are each curved towards the side away from the circular aperture 232, with the first arcuate section 2512 having a larger radius than the second arcuate section 2522, and the cylinder 421 being disposed against the inside of the second arcuate section 2522. It will be appreciated that the third contoured wall 241 is the same shape as the first contoured wall 251 and the fourth contoured wall 242 is the same shape as the second contoured 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, the cylindrical portion 421 is disposed against the inner side of the second arc-shaped section 2522, and when the damper member 402 is rotated integrally by rotating the first rotary cover 401, the damper 422 can be controlled to be located at different positions between the upper opening, the inner side of the first arc-shaped section 2512, and the lower opening. When the damper piece 402 is rotated to the point where the damper 422 is at the intersection of the lower opening and the first arcuate section 2512, the bleed duct 207 is closed; when the damper 422 rotates upward, the distance between the damper 422 and the first arc-shaped section 2512 is increased, and the air dividing channel 207 is gradually opened, so that the air volume of the air dividing channel 207 can be controlled by controlling the rotating position of the damper 422.

In some embodiments, in the air duct cover assembly 200 according to the embodiment of the present invention, the front cover 203 further has a vertical hole 233 along the front-back direction, and the left and right sides of the vertical hole 233 are formed with protrusions 234. The mechanical rotary potentiometer 500 includes: the second rotary cover 501 is provided with a second cover body 511 and a second butt joint cylinder 512 extending backwards from the second cover body 511, the potential device 502 is provided with a potentiometer 521 and a second rotary handle 522, the front end of the potentiometer 521 extends forwards to form the second rotary handle 522, the second cover body 511 is positioned on the front side of the front cover plate 203, the second butt joint cylinder 512 is inserted in the vertical hole 233, and the second rotary handle 522 is inserted in the second butt joint cylinder 512. Generally, the second knob 522 has a non-circular longitudinal cross-section and correspondingly the second docking barrel 512 has a non-circular longitudinal cross-section. The air duct plate 201 is formed with a notch at a position corresponding to the potentiometer 521.

As shown in fig. 1 and 2, in the duct cover assembly 200 according to the embodiment of the present invention, the circular holes 232 and the vertical holes 233 are symmetrically formed above the second elongated holes 231 on the front cover 203, and the first rotary cover 401 and the second rotary cover 501 are symmetrically formed. Through setting up first rotatory lid 401 and the left and right sides of second rectangular hole 231 with second rotatory lid 501 symmetry, air door spare 402 and potentiometric device 502 distribute in the left and right sides of main wind channel 206 for this wind channel apron subassembly 200's positive bilateral symmetry has better outward appearance effect.

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

Claims

1. An air duct cover plate assembly, comprising:

the mechanical shifting piece type air door is configured to divide the main air duct into a first air cavity and a second air cavity, and the air quantity entering the first air cavity and the second air cavity is adjusted through left-right movement; and

and the mechanical rotary air door is configured to regulate the air quantity entering the air distribution channel through rotation.

2. The duct flap assembly of claim 1,

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

the wind channel apron subassembly still includes: a mechanical rotary potentiometer configured to adjust a target temperature of the storage space by rotation.

3. The duct flap assembly of claim 2,

the cover plate portion includes: the rear cover plate is arranged on the rear side of the air duct plate;

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

a second groove with a backward opening and extending in the up-down direction is formed in one transverse side of the first groove on the air duct plate, the upper end of the second groove is communicated with the first groove, and the air dividing duct is defined between the rear cover plate and the second groove.

4. The duct flap assembly of claim 3,

the cover plate portion further includes: the front cover plate is arranged on the front side of the air duct plate;

the air duct plate is provided with first strip-shaped holes crossing the left and right sides of the first groove along the front-back direction, and the front cover plate is provided with second strip-shaped holes at positions corresponding to the first strip-shaped holes;

the mechanical paddle type damper includes: the shifting piece, the vertical plate and the blocking piece are arranged between the front cover plate and the air duct plate in a clamping mode, the shifting piece is inserted into the second elongated hole, and the blocking piece is inserted into the first elongated hole.

5. The duct flap assembly of claim 4,

a circular hole along the front-back direction is formed in the position, corresponding to the second groove, of the front cover plate, and a special-shaped hole is formed in the position, corresponding to the circular hole, of the air duct plate;

the mechanical rotary damper includes: the first rotary cover is provided with a first cover body and a first butt joint barrel extending backwards from the first cover body, the air door piece is provided with a cylindrical part, an air door, a first rotary handle and a clamping hook, a rotary central shaft of the cylindrical part is arranged along the front-back direction, the side surface of the rotary central shaft extends outwards to form the air door, the center of the front end of the rotary central shaft extends forwards to form the first rotary handle, and the periphery of the front end of the rotary central shaft extends forwards to form the clamping hook; the first cover body is arranged on the front side of the front cover plate, the first butt joint barrel is inserted into the circular hole, the cylindrical portion and the air door are arranged in the second groove, the first rotary handle is inserted into the first butt joint barrel, and the clamping hook is connected with the front cover plate on the peripheral side of the circular hole.

6. The duct flap assembly of claim 5,

the rear surface of the front cover plate is provided with a mounting frame which comprises a first special-shaped wall and a second special-shaped wall, wherein the first special-shaped wall and the second special-shaped wall are arranged on the left side and the right side of the circular hole respectively and extend along the vertical direction;

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

the cover plate portion further includes: the mounting cover comprises a third special-shaped wall, a fourth special-shaped wall and a rear wall plate located between the third special-shaped wall and the fourth special-shaped wall, the outer contour of the mounting cover is the same as that of the mounting frame, the third special-shaped wall penetrates through the special-shaped hole to be fixedly clamped with the first special-shaped wall, and the fourth special-shaped wall penetrates through the special-shaped hole to be fixedly clamped with the second special-shaped wall.

7. The duct flap assembly of claim 6,

the first special-shaped wall is provided with a first vertical section, a first arc-shaped section and a second vertical section from top to bottom;

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

the first arc-shaped section and the second arc-shaped section are respectively bent towards the side far away from the circular hole, the radius of the first arc-shaped section is larger than that of the second arc-shaped section, and the cylindrical part is arranged against the inner side of the second arc-shaped section.

8. The duct flap assembly of claim 5,

the front cover plate is also provided with vertical holes along the front-back direction, and the left side and the right side of each vertical hole are provided with bulges;

the mechanical rotary potentiometer comprises: the second rotary cover is provided with a second cover body and a second butt joint cylinder extending backwards from the second cover body, the potential device is provided with a potentiometer and a second rotary handle, the front end of the potentiometer extends forwards to form the second rotary handle, the second cover body is located on the front side of the front cover plate, the second butt joint cylinder is inserted into the vertical hole, and the second rotary handle is inserted into the second butt joint cylinder.

9. The duct flap assembly of claim 8,

on the front cover plate, the circular hole with erect the shape hole bilateral symmetry and offer in the top in second rectangular shape hole, first rotatory lid with the rotatory lid bilateral symmetry of second sets up.

10. A refrigerator having an air duct cover assembly according to any one of claims 1 to 9.

11. The refrigerator according to claim 10, further comprising:

the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber are limited in the box body along the vertical direction, and a temperature-changing drawer is arranged in the refrigerating chamber; wherein

The air duct cover plate assembly is arranged in the inner container of the refrigerating chamber, the first air cavity is used for supplying air to the refrigerating chamber, and the outlet end of the second air cavity is in butt joint with an air supply air duct of the freezing chamber; the inlet end of the air dividing channel is communicated with the first air cavity, and the outlet end of the air dividing channel is communicated with the variable temperature drawer.