WO2024055945A1

WO2024055945A1 - Refrigerator and control method therefor

Info

Publication number: WO2024055945A1
Application number: PCT/CN2023/118144
Authority: WO
Inventors: 姬立胜; 戚斐斐; 崔展鹏; 刘勇豪; 王艳
Original assignee: 青岛海尔特种制冷电器有限公司; 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2022-09-15
Filing date: 2023-09-12
Publication date: 2024-03-21
Also published as: CN117739580A

Abstract

A refrigerator and a control method therefor. A refrigerator (1) comprises: a storage compartment (110), a rear side wall of which is provided with a first damper (111) and a second damper (112); a shield (120), which is arranged in the storage compartment (110), wherein the shield (120) abuts against the rear side wall of the storage compartment (110); a drawer (130), wherein when the drawer (130) is at a closed position, an opening thereof is covered by the shield (120); and a partition plate (140), which is arranged at the top of the shield (120) and is located between the first damper (111) and the second damper (112), so as to prevent food ingredients from forming large crystals therein due to the temperature of the food ingredients undergoing a relatively large fluctuation near the appropriate storage temperature.

Description

A refrigerator and its control method

Technical field

The present invention relates to the technical field of refrigeration and freezing, and in particular to a refrigerator and a control method thereof.

Background technique

As a common household appliance, refrigerators can store food at low temperatures to extend the storage time of food. In order to provide users with a better user experience, the freshness preservation function of refrigerators is receiving more and more attention. In one method, the refrigerator maintains the storage temperature of the storage space within a certain range. On the basis of ensuring refrigeration, the crystals inside the food materials in the storage space are smaller, thereby reducing the loss of juice of the food materials and improving the preservation effect.

However, during the cooling process of the refrigerator, cold air continuously flows through the ingredients, and it takes a certain amount of time for the cold air to diffuse throughout the storage space to reach the storage temperature. Therefore, it is easy to cause large fluctuations in the temperature of the food. Sometimes, even if the detected temperature of the storage space is within the set range, the food has reached a lower temperature and large ice crystals have formed. As a result, the ingredients can no longer form small ice crystals, resulting in the loss of preservation effect.

Contents of the invention

An object of the present invention is to provide a refrigerator and a control method thereof that can solve any of the above problems.

A further object of the invention is to improve the uniformity of the cooling effect on the drawer.

A further object of the invention is to improve the uniformity of the cooling effect on storage compartments other than drawers.

In particular, the present invention provides a refrigerator, including:

The rear side wall of the storage compartment is provided with a first air door and a second air door, and the position of the first air door is higher than the second air door;

A shutter is provided in the storage compartment, the shutter is in contact with the rear side wall of the storage compartment, and the position of the shutter is lower than the second air door, and the shutter is provided with Multiple vents;

A drawer, which is pullably arranged at the bottom of the shutter, and the opening of the drawer in the closed position is covered by the shutter;

A partition plate is provided on the top of the shutter and is located between the first damper and the second damper. The partition plate and the shield together form an area with the second damper. Connected ventilation chamber.

Optionally, along the direction away from the second damper, the diameters of the plurality of ventilation holes become larger and larger; and/or the distribution of the plurality of ventilation holes becomes increasingly dense.

Optionally, at least one air guide plate is provided on the top of the baffle, and the air guide plate extends from the second air door to an end of the baffle away from the second air door.

Optionally, the air return hole of the storage compartment is formed on its rear side wall, and the air return hole is located in the middle and lower portion of the rear side wall of the storage compartment.

Optionally, the first air door is provided on one part of the left half and the right half of the rear side wall of the storage compartment, and the air return hole is provided on the other part.

Optionally, the rear side wall of the drawer is provided with an air outlet, and the air outlet is provided along the left-right direction on a side of the rear side wall of the drawer away from the return air hole.

Optionally, the second damper is provided on a side of the rear side wall of the storage compartment away from the air outlet.

Optionally, an air guide plate is provided on the top of the shield, and the air guide plate is inclined from the second air door to the side where the air outlet is located, and the air guide plate moves the second air door away from the air outlet. It is divided into multiple sections of air outlet areas distributed perpendicular to the air outlet direction, and the area of the air outlet area close to the side where the air outlet hole is located is larger than the area of the air outlet area on the side far from the air outlet hole.

In another aspect of the present invention, a control method for a refrigerator is provided, which is applied to the above-mentioned For the refrigerator in any item, the control method includes:

Get the set temperature of food storage;

Obtain the temperature detection value in the drawer;

Determine whether the difference between the temperature detection value and the set temperature is greater than the first threshold. If so, control the second damper to open alone; if not, control the first damper to open alone.

Optionally, the step of determining whether the difference between the temperature detection value and the set temperature is greater than a first threshold includes:

Determine whether the difference between the temperature detection value and the set temperature is greater than a second threshold. If so, control the first damper and the second damper to open; if not, control the second damper to open alone;

The second threshold is greater than the first threshold.

The refrigerator of the present invention is provided with a first air door and a second air door on the rear side wall of the storage compartment. In addition, the refrigerator is provided with a shutter covering the drawer and a partition plate located between the first air door and the second air door. The partition plate and the shutter together form a ventilation cavity connected to the second air door. Specifically, when the drawer is closed and the first air door is opened alone, the cold air can enter the space between the partition board and the top wall of the storage compartment from the first air door, and then form a flow around the drawer in the storage compartment. airflow. When the second air door is opened, cold air can enter the ventilation cavity from the second air door, and then enter the inside of the drawer from the ventilation hole on the shutter. Therefore, by opening the second air door, the temperature of the food materials can be quickly cooled, so that the food materials can obtain an initial temperature close to the suitable storage temperature. This not only helps to inhibit the reproduction of microorganisms, but also avoids the slow temperature drop of the food materials when the first air door is used to cool down. Overgrowth of microorganisms occurs. In addition, by separately opening the first air door, the cold air forms an air flow around the drawer, which is beneficial to evenly cooling the space in the drawer. Moreover, it prevents cold air from blowing directly on the ingredients in the drawer when the temperature of the ingredients is close to the suitable storage temperature, thereby effectively avoiding the occurrence of large fluctuations in the food near the suitable storage temperature, resulting in large crystallization.

Further, in the refrigerator of the present invention, the diameter of the ventilation holes on the shield is made larger and larger in a direction away from the second air door, and/or, by making the diameter of the ventilation holes on the shield farther away from the second air door. The direction of the doors is getting closer and closer, which helps to increase the air intake at the end of the shutter away from the second air door. Therefore, it can be avoided that a large amount of cold air enters the ventilation cavity from the second air door and directly settles on the rear side of the drawer, thereby increasing the amount of cold air entering the drawer from the front end of the drawer, thereby improving the uniformity of cooling in the drawer.

Furthermore, the refrigerator of the present invention arranges the return air hole of the storage compartment at the middle and lower portion of the rear side wall, and locates the first air door and the return air hole at the left and right portions of the rear side wall of the storage compartment respectively. That is to say, the first air door and the return air hole are diagonally distributed on the rear side wall of the storage compartment, which helps the cold air entering from the first air door to fully flow through the space of the storage compartment, thereby improving the storage space. The uniformity of the cooling effect between compartments can then improve the uniformity of the cooling effect in the drawer.

From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will further understand the above and other objects, advantages and features of the present invention.

Description of drawings

Some specific embodiments of the invention will be described in detail below 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 parts or portions. Those skilled in the art will appreciate that these drawings are not necessarily drawn to scale. In the attached picture:

Figure 1 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present invention;

Figure 2 is a schematic cross-sectional view of a storage compartment portion of a refrigerator according to one embodiment of the present invention;

Figure 3 is a schematic diagram of a shutter of a refrigerator according to an embodiment of the present invention;

Figure 4 is a schematic diagram of a cover of a refrigerator according to another embodiment of the present invention;

Figure 5 is a schematic flow chart of a control method for a refrigerator according to one embodiment of the present invention;

Figure 6 is a schematic flowchart of a control method for a refrigerator according to another embodiment of the present invention.

Detailed ways

Those skilled in the art should understand that the embodiments described below are only some of the embodiments of the present invention, rather than all the embodiments of the present invention. These partial embodiments are intended to explain the technical principles of the present invention and are not intended to be used for To limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts should still fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "width", "upper", "lower", "front", "back", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore is not to be construed as a limitation of the invention.

As shown in FIGS. 1 and 2 , the refrigerator 1 includes a storage compartment 110 , a shutter 120 , a drawer 130 and a partition 140 . Among them, a first air door 111 and a second air door 112 are provided on the rear side wall of the storage compartment 110, and the position of the first air door 111 is higher than the second air door 112. The shutter 120 is disposed in the storage compartment 110 . The shutter 120 is in contact with the rear side wall of the storage compartment 110 . The shutter 120 is positioned lower than the second air door 112 . The shutter 120 is provided with a plurality of ventilation holes 121 . The drawer 130 is pullably disposed at the bottom of the shutter 120 . The opening of the drawer 130 in the closed position is covered by the shutter 120 and abuts against the front end of the shutter 120 . The partition plate 140 is provided on the top of the shutter 120 and is located between the first damper 111 and the second damper 112 . The partition plate 140 and the shutter 120 together form a ventilation cavity 150 connected to the second damper 112 .

Referring to FIGS. 1 and 2 , specifically, the refrigerator 1 includes a box body 10 and a door body 20 . A storage compartment 110 is formed in the box 10 . The door body 20 is pivotally connected to the box body 10 and can open or close the box body 10 . When the door 20 is closed, the front end of the storage compartment 110 is in a sealed state. Specifically, the door 20 comes into contact with the front end of the storage compartment 110 to close the front end opening of the storage compartment 110 . The box 10 is also formed with a refrigeration cavity, and an evaporator and a fan are provided in the refrigeration cavity. When the fan is turned on, the cold air in the refrigeration cavity can be blown into the storage compartment 110 .

Continuing to refer to Figures 1 and 2, specifically, the drawer 130 is pullably disposed in the storage space. In the storage room 110, the width of the shutter 120 in the left-right direction is greater than the width of the drawer 130. Therefore, when the drawer 130 is in the closed position, that is, when the drawer 130 is pushed into the storage position, the opening of the drawer 130 can be covered by the shutter 120 . Furthermore, the front side wall of the drawer 130 is in contact with the front end of the shutter 120 . Therefore, it is difficult for cold air to enter the drawer 130 from the storage compartment 110 . When the user needs to put food in, he can open the refrigerator door 20 , then pull out the drawer 130 from under the cover 120 , and then put the food into the drawer 130 .

It should be noted that when the drawer 130 is in the closed position, the top surface of the drawer 130 may be in contact with the shutter 120 or may have a certain gap.

In addition, it should be noted that the shutter 120 may be a separate plate, or may be the top wall of a cylindrical structure surrounding the drawer 130 .

Furthermore, the left and right sides and the front side of the shutter 120 have vertical portions extending upward, and the bottom surface of the partition plate 140 is in contact with the top surface of the vertical portion of the shutter 120 . Furthermore, the partition plate 140 is in contact with the rear side wall of the storage compartment 110 . Thus, a ventilation cavity 150 is formed between the partition plate 140 and the shielding plate 120 . The cover 120 is provided with a plurality of ventilation holes 121 . Therefore, when the second damper 112 is opened, the cold air enters the ventilation cavity 150 from the second damper 112 and then enters the drawer 130 from the ventilation hole 121 .

It should be noted that the vertical portions between the shutter 120 and the partition plate 140 can also be formed at the bottom of the partition plate 140 , or the vertical portion can be partially formed on the shutter 120 and partially formed on the partition. on board 140. Alternatively, the shutter 120 and the partition plate 140 may be integrally formed.

When the first damper 111 is opened, the cold air cannot enter the ventilation cavity 150 because the first damper 111 is located above the partition plate 140 . In addition, because the shutter 120 covers the opening of the drawer 130, it is not easy for the cold air entering from the first damper 111 to directly enter the drawer 130 from the opening of the drawer 130. Therefore, the air flow entering the storage compartment 110 from the first damper 111 will form an air flow surrounding the drawer 130 .

Preferably, the width of the partition plate 140 in the left-right direction is the same as the width of the storage compartment 120 so as to be in contact with the left and right side walls of the storage compartment 120 .

In the solution of this embodiment, by opening the second damper 112, the food material can be quickly cooled, so that the food material can obtain an initial temperature close to the suitable storage temperature, which not only helps to inhibit the reproduction of microorganisms, but also avoids using the first damper 111 to cool down. When the temperature of the food drops slowly, excessive growth of microorganisms occurs. This ensures the freshness of food.

In addition, by individually opening the first damper 111, the cold air forms an airflow surrounding the drawer 130, which is beneficial to evenly cooling the space in the drawer 130. Moreover, cold air is prevented from blowing directly on the food materials in the drawer 130 when the temperature of the food materials is close to the suitable storage temperature, thereby effectively avoiding the occurrence of large fluctuations in the food materials near the suitable storage temperature, resulting in large crystallization.

As shown in FIGS. 1 and 2 , the return air hole 113 of the storage compartment 110 is formed on its rear side wall, and the return air hole 113 is located in the middle and lower portion of the rear side wall of the storage compartment 110 .

Specifically, taking the horizontal centerline of the rear side wall of the storage compartment 110 as a reference, the air return hole 113 is located below the horizontal centerline. Preferably, the air return hole 113 is provided in close contact with the bottom wall of the storage compartment 110 . By setting the return air hole 113 as low as possible, it helps the flow circulation of cold air and reduces the deposition of cold air at the bottom of the storage compartment 110, thereby making the temperature of the storage compartment 110 more uniform.

Referring to FIG. 2 , further, the first air door 111 is provided in one part of the left half and the right half of the rear side wall of the storage compartment 110 , and the air return hole 113 is provided in the other part.

Specifically, the first air door 111 is provided near the left side wall of the storage compartment 110 , and the return air hole 113 is provided near the right side wall of the storage compartment 110 . At the same time, because the first air door 111 is located above the partition plate 140 and the return air hole 113 is close to the bottom wall of the storage compartment 110, the first air door 111 and the return air hole 113 are generally distributed diagonally along the storage compartment 110.

Those skilled in the art can understand that by arranging the first air door 111 and the return air hole 113 to the left and right parts of the rear side wall of the storage compartment 110 respectively, and the first air door 111 is close to the top of the storage compartment 110, the return air hole 113 is near the bottom of the storage compartment 110. That is to say, the first air door 111 and the return air hole 113 are diagonally distributed on the rear side wall of the storage compartment 110. This helps to allow the cold air entering from the first damper 111 to fully flow through the space of the storage compartment 110 , thereby improving the uniformity of the cooling effect on the storage compartment 110 and thereby improving the uniformity of the cooling effect in the drawer 130 .

It should be noted that in some other embodiments of the present application, the first damper 111 can be disposed at any position on the rear side wall of the storage compartment 110 along the left-right direction. In addition, the air return hole 113 can also be provided at any position along the left and right direction on the rear side wall of the storage compartment 110

Continuing to refer to Figure 2, the rear side wall of the drawer 130 is provided with an air outlet 131. The air outlet 131 helps to flow out the cold air in the drawer 130, thereby enhancing the air circulation in the drawer 130 and improving the cooling during initial cooling. efficiency.

Further, the air outlet hole 131 is provided on the side of the rear side wall of the drawer 130 away from the air return hole 113 along the left and right directions. Specifically, the air return hole 113 is provided near the right side wall of the storage compartment 110 , and the air outlet hole 131 is provided near the left side wall of the drawer 130 . By locating the air outlet 131 as far away from the return air hole 113 as possible, it helps to minimize the return air from the storage room 110 entering the drawer 130 from the air outlet 131 and avoid large fluctuations in the temperature in the drawer 130 .

It should be noted that in other embodiments of the present application, the air outlet 131 can be provided at any position on the rear side wall of the drawer 130 .

In addition, when the air outlet hole 131 and the return air hole 113 are aligned in the vertical direction, preferably, the air outlet hole 131 is located above the return air hole 113 . This reduces the return air from the storage compartment 110 entering the drawer 130 from the air outlet 131 .

Continuing to refer to FIG. 2 , further, the second damper 112 is provided on the side of the rear side wall of the storage compartment 110 away from the air outlet 131 . Specifically, the air outlet 131 is provided close to the left side wall of the drawer 130 . The second damper 112 is disposed close to the right side wall of the drawer 130 .

By arranging the air outlet hole 131 and the second air door 112 as far as possible in the left and right direction, it is helpful to allow the cold air entering the ventilation cavity 150 from the second air door 112 to fully flow through the space in the drawer 130, thereby making it possible to improve the drawer 130. Uniformity of internal cooling effect.

It should be noted that in other embodiments of the present application, the second damper 112 may be disposed at any position capable of communicating with the ventilation cavity 150 .

For example, as shown in FIG. 4 , in one embodiment, the second damper 112 is disposed in the middle position along the left and right directions of the ventilation cavity 150 .

As shown in FIGS. 3 and 4 , two air guide plates 122 are provided on the top of the shield 120 . The air guide plates 122 extend from the second damper 112 to an end of the shield 120 away from the second damper 112 . Specifically, the two air guide plates 122 can separate three ventilation channels in the ventilation cavity 150. The cold air entering the ventilation cavity 150 from the second air door 112 is separated by the air guide plates 122, and cold air flows into all three ventilation channels. Therefore, it is helpful for the cold air to flow into the drawer 130 from multiple positions relatively uniformly, thereby improving the uniformity of the cold air distribution in the drawer 130 .

It should be noted that in other embodiments of the present application, the number of air guide plates 122 may also be one, three or more.

Referring to FIGS. 3 and 4 , further, the air guide plate 122 is inclined toward the outside of the second damper 112 , that is, toward the left or right side of the second damper 112 .

Specifically, as shown in FIG. 3 , in an embodiment in which the second air door 112 is disposed on the right side of the ventilation cavity 150 , the air guide plate 122 is tilted to the left, which can guide the cold air to the left and prevent the cold air from gathering in the drawer 130 the right side of. As shown in FIG. 4 , in an embodiment in which the second air door 112 is disposed in the middle position of the ventilation cavity 150 , the left air guide plate 122 is inclined to the left, and the right air guide plate 122 is inclined to the right, thereby The cold air is directed to both sides to prevent cold air from gathering in the middle.

That is to say, by slanting the air guide plate 122 , it is helpful to avoid excessive accumulation of cold wind in the position of the drawer 130 close to the second air door 112 , thereby helping to spread the cold wind.

Referring to FIGS. 2 and 3 , in the embodiment where the second air door 112 and the air outlet 131 are arranged as far apart as possible in the left and right direction. Further, the air guide plate 122 is inclined from the second air door 112 to the side where the air outlet hole 131 is located. The air guide plate 122 divides the second air door 112 into multiple air outlet areas distributed perpendicular to the air outlet direction, and the area of the air outlet area close to the air outlet hole 131 is larger than that of the outlet area on the side far from the air outlet hole 131 . The area of the wind area.

Specifically, the height of the air guide plate 122 is greater than or equal to the height of the second air door 112. After the air guide plate 122 is attached to the rear side wall of the storage compartment 110, the second air door 112 is divided into three air outlet areas. The area on the left side is closer to the air outlet 131 than the area on the right side. That is to say, the area of the air outlet area on the left side is larger, that is, the area of the leftmost air outlet area is larger than the area of the middle air outlet area, and the area of the middle air outlet area is larger than the area of the right air outlet area.

Therefore, more air volume can be guided to an area away from the second damper 112 , further improving the uniformity of cold air distribution, and preventing cold air from gathering on the side where the second damper 112 is located when the second damper 112 is biased to one side.

Referring to FIGS. 3 and 4 , further, in the direction away from the second damper 112 , the diameters of the plurality of ventilation holes 121 become larger and larger. Through the above structure, a large amount of cold air can be prevented from entering the ventilation cavity 150 from the second air door 112 and then directly settling on the rear side of the drawer 130, thereby increasing the amount of cold air entering the drawer 130 from the front end of the drawer 130, thereby improving the uniformity of cooling in the drawer 130.

It should be noted that the plurality of ventilation holes 121 may also be distributed more and more densely in the direction away from the second damper 112 . Alternatively, both the diameter and density of the ventilation holes 121 can be changed.

As shown in Figure 5, this application also provides a control method for a refrigerator. The control method for a refrigerator generally includes:

Step S501: Obtain the set temperature of food storage.

Step S503: Obtain the temperature detection value in the drawer.

Step S505: Determine whether the difference between the temperature detection value and the set temperature is greater than the first threshold. If yes, step S507 is executed. If not, step S509 is executed.

Step S507, control the second damper to open independently.

Step S509, control the first damper to open independently.

Specifically, when the food is put into the drawer 130 and the refrigerator door 20 is closed. Get the set temperature of the food, which is the temperature required during the current food storage process. Then, the temperature detection value in the drawer 130 is obtained, that is, the real-time temperature in the drawer 130 . When the difference between the temperature detection value and the set temperature is greater than the first threshold, that is, the current temperature in the drawer 130 is different from the set temperature. If the temperature difference is relatively large, then the second damper 112 is opened separately to directly supply air to the drawer 130 to rapidly cool down the drawer 130 . During this period, the temperature in the drawer 130 is continuously detected. When the difference between the temperature detection value and the set temperature is less than or equal to the first threshold, that is to say, the current temperature in the drawer 130 is relatively close to the set temperature. Then, the first air door 111 is opened separately to send the cold air surrounding the drawer 130 to the storage compartment 110 to cool down the food.

In the solution of this embodiment, by individually opening the second damper 112 when the difference between the temperature detection value and the set temperature is greater than the first threshold, the food material can be quickly cooled, so that the food material can obtain an initial temperature close to the suitable storage temperature. It not only helps to inhibit the reproduction of microorganisms, but also avoids the excessive reproduction of microorganisms caused by the slower temperature reduction of food materials when the first damper 111 is used for cooling.

In addition, by individually opening the first damper 111 when the difference between the temperature detection value and the set temperature is less than or equal to the first threshold, the cold air forms an airflow around the drawer 130, which is beneficial to evenly cooling the space in the drawer 130. Moreover, cold air is prevented from blowing directly on the food materials in the drawer 130 when the temperature of the food materials is close to the suitable storage temperature, thereby effectively avoiding the occurrence of large fluctuations in the food materials near the suitable storage temperature, resulting in large crystallization.

As shown in Figure 6, in one embodiment, step S505 includes:

Step S601: Determine whether the difference between the temperature detection value and the set temperature is greater than the second threshold. If yes, step S603 is executed. If not, step S605 is executed. Wherein, the second threshold is greater than the first threshold.

Step S603, control the first damper and the second damper to open.

Step S605, control the second damper to open independently.

Specifically, after obtaining the set temperature of the food material, the temperature detection value in the drawer 130 is obtained. When the difference between the temperature detection value and the set temperature is greater than the second threshold, that is, the current temperature in the drawer 130 is greatly different from the set temperature, then the first damper 111 and the second damper 112 are opened at the same time, so that the drawer 130 cools down faster. During this period, the temperature in the drawer 130 is continuously detected. When the difference between the temperature detection value and the set temperature is less than or equal to the second threshold and greater than the first threshold, that is to say, the drawer 130 has a certain cooling, but the current temperature in the drawer 130 is different from the set temperature. constant temperature phase The difference is large. Then, the second damper 112 is opened separately to further cool down the food. Avoid the simultaneous air supply by the first damper 111 and the second damper 112, which may cause the temperature to drop too quickly and cause large crystallization of the food ingredients.

By now, those skilled in the art will appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, the disclosed embodiments may still be practiced in accordance with the present invention without departing from the spirit and scope of the present invention. The content directly identifies or leads to many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A refrigerator including:

The rear side wall of the storage compartment is provided with a first air door and a second air door, and the position of the first air door is higher than the second air door;

A shutter is provided in the storage compartment, the shutter is in contact with the rear side wall of the storage compartment, and the position of the shutter is lower than the second air door, and the shutter is provided with Multiple vents;

A drawer, which is pullably arranged at the bottom of the shutter, and the opening of the drawer in the closed position is covered by the shutter;

A partition plate is provided on the top of the shutter and is located between the first damper and the second damper. The partition plate and the shield together form an area with the second damper. Connected ventilation chamber.
The refrigerator according to claim 1, wherein,

Along the direction away from the second damper, the diameters of the plurality of ventilation holes become larger and larger; and/or,

The ventilation holes are distributed more and more densely.
The refrigerator according to claim 1, wherein,

At least one air guide plate is provided on the top of the visor, and the air guide plate extends from the second air door to an end of the visor away from the second air door.
The refrigerator according to claim 1, wherein,

The air return hole of the storage compartment is formed on its rear side wall, and the air return hole is located in the middle and lower portion of the rear side wall of the storage compartment.
The refrigerator according to claim 4, wherein,

The first damper is provided on one part of the left half and the right half of the rear side wall of the storage compartment, and the air return hole is provided on the other part.
The refrigerator according to claim 5, wherein,

The rear side wall of the drawer is provided with an air outlet, and the air outlet is arranged on a side of the rear side wall of the drawer away from the return air hole along the left and right directions.
The refrigerator according to claim 6, wherein,

The second damper is disposed on a side of the rear side wall of the storage compartment away from the air outlet.
The refrigerator according to claim 7, wherein,

An air guide plate is provided on the top of the shield, and the air guide plate is inclined from the second air door to the side where the air outlet is located. The air guide plate separates the second air door into vertical sections. There are multiple sections of air outlet areas distributed in the air outlet direction, and the area of the air outlet area on the side close to the air outlet hole is larger than the area of the air outlet area on the side far from the air outlet hole.
A control method for a refrigerator, applied to the refrigerator according to any one of claims 1 to 3, the control method comprising:

Get the set temperature of food storage;

Obtain the temperature detection value in the drawer;

Determine whether the difference between the temperature detection value and the set temperature is greater than the first threshold. If so, control the second damper to open alone; if not, control the first damper to open alone.
The control method of the refrigerator according to claim 9, wherein:

The step of determining whether the difference between the temperature detection value and the set temperature is greater than a first threshold includes:

Determine whether the difference between the temperature detection value and the set temperature is greater than a second threshold. If so, control the first damper and the second damper to open; if not, control the second damper to open alone;

The second threshold is greater than the first threshold.