CN111912153A - Refrigerator and freezer - Google Patents

Abstract

The invention provides a refrigeration and freezing device. It includes: a first storage compartment, which is divided into at least two storage spaces; a cooling room; an air duct system, the air duct system has at least two air supply ports, at least two first air return ports and an on-off control device, each Each air supply port is connected to the cooling chamber and a storage space, and each first air return port is connected to a storage space and the cooling chamber; the on-off control device controls the airflow from the cooling chamber to flow to one or more of the at least two air supply ports , and then control all or part of the airflow to flow to the corresponding storage space; and a gear generating device, configured to generate at least two gear command groups. The command group includes a plurality of gear commands, corresponding to control one storage space; each The gear command includes control information for keeping the corresponding storage space at a target temperature, so that the refrigerating and freezing device controls the on-off control device according to each gear command, thereby controlling the temperature in the corresponding storage space.

Description

Refrigerator and freezer

technical field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigeration and freezing device.

Background technique

With the development of social economy and the improvement of people's living standards, refrigerators have also become indispensable household appliances in people's daily life. In the existing refrigerator compartment, in order to uniformly control the temperature, each layer is set at a uniform temperature of 0-5°C, and the optimal storage temperature of all foods is different. If the user sets the temperature to the low gear of 0°C, the temperature of the entire compartment of the refrigerator is about 0°C. Foods with the best storage temperature greater than 5°C are stored at this temperature, which will greatly shorten the preservation cycle of the food and accelerate the deterioration of the food.

SUMMARY OF THE INVENTION

In view of the above problems, an invention is proposed to provide a refrigerating and freezing device that overcomes the above problems or at least partially solves the above problems, which can realize independent partitions of the refrigerator compartment, and each layer partition can achieve temperatures of 2, 5, 10 (low , medium, high) and other multi-level temperature independent adjustment, so that users can adjust the temperature of each layer of the refrigerator according to their own needs and habits, through the balanced control of temperature and humidity, to achieve the best storage environment for different foods area to guide the user to correctly place the best storage space for food.

To this end, the present invention proposes a refrigeration and freezing device, comprising:

a first storage compartment, wherein at least one storage rack is arranged in the first storage compartment, so that the first storage compartment is divided into at least two storage spaces by the storage rack;

a cooling chamber configured to accommodate an evaporator of the refrigerated freezer;

An air duct system, the air duct system has at least two air supply ports, at least two first air return ports and an on-off control device, each of the air supply ports communicates with the cooling chamber and one of the storage spaces, each The first air return port communicates with one of the storage spaces and the cooling chamber; the on-off control device is configured to control the airflow from the cooling chamber to flow to one or more of the at least two air supply ports, and further controlling all or part of the airflow to the respective said storage spaces; and

a gear position generating device configured to generate at least two gear position instruction groups; each of the gear position instruction groups includes a plurality of gear position instructions, and each of the gear position instruction groups correspondingly controls one of the storage spaces; each Each of the gear instructions includes control information for keeping the corresponding storage space at a target temperature or within a target temperature range, so that the refrigerating and freezing apparatus controls the on-off control according to each of the gear instructions The device is used to control the temperature in the corresponding storage space.

Optionally, the gear position generating device includes at least two display control boards disposed on the inner sidewall of each of the storage spaces, and each of the display control boards is configured to receive a signal and generate one of the gear positions. the gear instruction of the instruction group; and each of the display control panels is further configured to display and suggest the type of items stored in the corresponding storage space; or,

The gear position generating device includes at least two adjustment buttons, and an indication icon set corresponding to each of the gear position instructions of each of the adjustment buttons; each of the indication icons at least includes suggestions for the corresponding storage. Information on the types of items stored in the space.

Optionally, at least two of the storage spaces are arranged in sequence along the vertical direction; the air duct system includes:

an air supply assembly, provided with at least two of the air supply ports on the rear part of the first storage compartment; the on-off control device is arranged in the air supply assembly; and

The air return assembly is arranged on a lateral side of the air supply assembly, and has at least two of the first air return ports.

Optionally, the on-off control device is a shunt air supply device, comprising a casing, at least two air outlets arranged on the peripheral wall of the casing, and an adjusting member rotatably arranged inside the casing ; the adjusting member has at least one shielding portion, configured to shield at least two of the air outlets in a controlled manner, so as to adjust the respective air outlet areas of the at least two air outlets; and each of the air outlets passes through Correspondingly, the air supply port communicates with one of the storage spaces.

Optionally, at least one of the storage racks further divides the first storage compartment into drawer spaces; the drawer spaces are arranged on the lower sides of the three storage spaces; the air duct system further has A second air return port is provided on the air return assembly, and the second air return port communicates with the drawer space and the cooling chamber.

Optionally, the number of the storage spaces is three, and the number of the first air return openings is three; the three first air return openings and the second air return openings are arranged in sequence along the vertical direction.

Optionally, at least two of the air outlets include a first air outlet, and a second air outlet and a third air outlet disposed on both sides of the first air outlet; the first air outlet faces upward;

The air supply ports communicating with the storage space on the uppermost side are the first air supply ports, and there are four air supply ports, which are respectively arranged on both sides of the upper part and both sides of the middle part of the storage space;

The air supply ports communicating with the storage space in the middle are the second air supply ports, and there are two air supply ports, which are respectively arranged on both sides of the upper part of the storage space;

The air supply port communicating with the lowermost storage space is a third air supply port, and there is one air supply port, which is arranged on the upper side of the storage space;

The air supply assembly is provided with:

the first air supply air duct, the lower end is connected with the first air outlet, and the upper part is connected with the four first air supply ports;

The second air supply air duct and the spanning air duct, the second air supply air duct is arranged on one side of the first air supply air duct, the lower end is connected to the second air outlet, and the upper end is connected to one of the second air supply air ducts an air outlet and the spanning air duct, the spanning air duct spans the first air supply air duct and communicates with another of the second air supply openings; and

The third air supply air duct is arranged on the other side of the first air supply air duct, the lower end is connected with the third air outlet, and the upper end is connected with the third air supply port.

Optionally, the area ratio between the uppermost first air return port and the first air return port below it is 2 to 3;

The area ratio between the first air return port at the bottom and the first air return port above it is 1/2 to 7/10;

The area ratio between the lowermost first air return port and the second air return port is 1/10 to 1/5.

Optionally, the refrigerating and freezing device also includes:

a first door body, installed in the first storage compartment, configured to open or close the first storage compartment;

At least one bottle seat is arranged on the rear side of the first door body, and the lower part of each bottle seat is located on the front side of one of the racks, and when the first door body is closed, each of the bottle seats is closed. The bottle holder is in contact with the rack.

Optionally, a return air duct is set in the return air assembly, and each of the first return air ports is communicated with the return air duct;

A sealing structure is provided between each of the racks and the compartment wall of the first storage compartment;

The air supply assembly is further provided with at least two temperature sensors to detect the temperature in each of the storage spaces respectively.

In the refrigerating and freezing device of the present invention, because it has an air duct system and a gear generating device, it can realize the independent partition of the refrigerator compartment, and each layer partition can realize the temperature of 2°C, 5°C, 10°C (low, medium, high, etc.). ) and other temperature independent adjustment, so that users can adjust the temperature of each layer of the refrigerator according to their own needs and habits, through the balanced control of temperature and humidity, to achieve the best storage environment area for different foods, guide users Properly place food for optimal storage space.

Further, in the refrigerating and freezing device of the present invention, the unique micro-air duct technology can realize the independent temperature control of each layer of the refrigerating compartment, fast cooling, reduce the temperature fluctuation of each layer, preserve freshness and save energy, and can also achieve each layer. The temperature of the layer is independently adjustable in 3 grades, so that the food can be stored in the best temperature range, which greatly improves the preservation cycle of the food, makes it more convenient for users to use, and saves energy.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the 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 example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic structural diagram of a refrigerating and freezing apparatus according to an embodiment of the present invention;

Fig. 2 is a schematic partial structural diagram of the refrigeration and freezing device shown in Fig. 1;

3 is a schematic exploded view of a partial structure of the refrigeration and freezing apparatus shown in FIG. 1;

Fig. 4 is a schematic partial structure diagram of the refrigeration and freezing device shown in Fig. 1;

Fig. 5 is a schematic internal structure diagram of the refrigerating and freezing device shown in Fig. 1;

FIG. 6 is a schematic structural diagram of an air supply assembly in the refrigerating and freezing device shown in FIG. 1;

FIG. 7 is a schematic structural diagram of the air supply assembly shown in FIG. 6 from another perspective;

FIG. 8 is a schematic structural diagram of a return air assembly in the refrigerating and freezing apparatus shown in FIG. 1 .

Detailed ways

FIG. 1 is a schematic structural diagram of a refrigerating and freezing apparatus according to an embodiment of the present invention. As shown in FIG. 1 , and referring to FIGS. 2 to 8 , the arrows in the figures may indicate the airflow direction. An embodiment of the present invention provides a refrigerating and freezing apparatus. The refrigerating and freezing apparatus includes a box body 20, and a storage compartment is defined in the box body 20, and the refrigerating and freezing apparatus further has a door for opening and closing the storage compartment.

The storage compartment may include a first storage compartment, a second storage compartment, a third storage compartment, and the like. The first storage compartment may be a refrigerating compartment, the second storage compartment may be a freezing compartment, and the third storage compartment may be a variable temperature compartment. Accordingly, the door body may include a first door body 30, a second door body and a third door body to open or close the first storage compartment, the second storage compartment and the third storage compartment, respectively. Further, the temperature in the freezing compartment is generally in the range of -22°C to -14°C. The variable temperature chamber can be freely adjusted to -18°C to 8°C.

The refrigeration system is configured to provide refrigeration to the storage compartment. In some embodiments, the refrigeration system may be a refrigeration cycle system consisting of a compressor, a condenser, a throttling device, an evaporator 27, and the like. The evaporator 27 is configured to provide cooling directly or indirectly into the storage compartment. Since the refrigerating system itself of the refrigerating and freezing apparatus is well known to those skilled in the art, it will not be repeated here. In addition, a cooling chamber may be provided in the box body 20, and may be specifically provided at the rear side of the third storage compartment. The cooling chamber is used for accommodating the evaporator 27 . The number of cooling chambers and evaporators 27 may be one or more. When the evaporator 27 can be one, it can provide cooling capacity for all the storage compartments; when there are multiple evaporators 27, each evaporator 27 can provide cooling capacity for one storage compartment.

In some embodiments of the present invention, as shown in FIG. 2 , at least one shelf 40 is disposed in the first storage compartment, so that the first storage compartment is divided into at least two storages by the shelf 40 Space 21. The refrigerating and freezing device further includes an air passage system and a gear position generating device 50 . The air duct system has at least two air supply ports, at least two first air return ports 81 and an on-off control device, each air supply port is connected to the cooling chamber and a storage space 21, and each first air return port 81 is connected to a storage space 21 and the cooling chamber; the on-off control device 60 is configured to control the flow of the airflow from the cooling chamber to one or more of the at least two air supply ports, thereby controlling all or part of the airflow to flow to the corresponding storage space 21 . Specifically, the on-off control device 60 can make the airflow from the cooling chamber flow only to one storage space 21 , or can make the airflow flow to two or more storage spaces 21 at the same time, that is, it is used to adjust each storage space 21 air supply.

The gear generating device 50 is configured to generate at least two gear instruction groups; each gear instruction group includes a plurality of gear instructions, and each gear instruction group controls one storage space 21 correspondingly; each gear instruction includes The control information for keeping the corresponding storage space 21 at a target temperature or within a target temperature range, so that the refrigerating and freezing apparatus controls the on-off control device 60 according to each gear instruction, thereby controlling the temperature in the corresponding storage space 21 .

For example, in some embodiments, the gear position generating device 50 includes at least two display control panels disposed on the inner sidewall of each storage space 21, and each display control panel is configured to receive a signal and generate a gear position instruction group and each display control panel is also configured to display and suggest the types of items stored in the corresponding storage space 21 . Each display control panel can be disposed adjacent to the corresponding storage space 21 . Further, each display control panel can use sliding, clicking, etc. to input information. In some alternative embodiments of the present invention, the gear generating device 50 may be a total touch screen display of a refrigerated freezer.

In other embodiments, the gear generating device 50 includes at least two adjustment buttons, and an indication icon corresponding to each gear command of each adjustment button. Each indication icon includes at least information suggesting the type of items stored in the corresponding storage space. Each adjustment button can be a mechanical key structure such as a knob. The indication icon may be an icon provided on the inner side of the refrigerator box near the adjustment button, and may be set by means of engraving, silk screen, hollow structure and the like. For example, the indication icon may be a symbol representing an item suggesting the type of the item stored in the corresponding storage space. Further, each indication icon includes at least a target temperature or a target temperature range in the corresponding storage space. The gear generating device 50 may also include at least two indicator lights. Each gear command of each adjustment button is associated with an indicator light, so that when the adjustment button indicates the corresponding gear command, the corresponding indicator light is turned on, and then the corresponding indicator icon is highlighted, that is, illuminated, so that Observed by users. Alternatively, the indication icons can also be displayed on the display screen, and the combination of mechanical keys and display screen display can be achieved. Further, the indication icons can also be directly text, that is, the display screen can display all the information associated with the corresponding gear command.

In this embodiment, because of the air duct system and the gear generating device 50, the refrigerator compartment can be independently partitioned, and each layer partition can achieve temperatures of 2°C, 5°C, and 10°C (low, medium, and high). Independent adjustment of multiple temperature levels, so that users can adjust the temperature of each layer of the refrigerator according to their own needs and habits, through the balanced control of temperature and humidity, to achieve the best storage environment area for different foods, guide users to correct Best storage space for food. Before this application, the temperature of each layer of the refrigerator was the same, and the optimal storage temperature and humidity of different foods were different, which caused users to dare not put some low-temperature ready-to-eat, tropical fruits and vegetables into the refrigerator. If the temperature is too low, it cannot be eaten immediately, and users can only put it outside; while tropical melons and fruits need to be stored in the range of 8-10 °C for the best storage time, and they do not dare to put them in the refrigerator. The food placed in the refrigerator is not in the best temperature range, and the food decays quickly and wastes a lot. The embodiment of the present invention can freely adjust the temperature of each layer of the refrigerator according to the needs of the user, so that the food can be stored in the best storage space, and the user can be guided to correctly place the food in the best storage space. Each storage space 21 has its own independent outlet air and independent return air, and each storage space 21 can realize multiple temperature changes and switch freely.

Further, when the number of gear commands in each gear command group is relatively large, for example, each time the target temperature in the storage space changes by one degree Celsius, it can be used as a new gear. This may also be referred to as stepless gear adjustment. For example, there may be 11 gears between 0°C and 10°C, so that the temperature of each storage space 21 can be adjusted arbitrarily between 0°C and 10°C. Of course, between 0°C and 10°C, only three gears can be set: 0°C ice temperature zone, 4°C gold zone, and 10°C tropical fruit zone.

In some embodiments of the present invention, as shown in FIGS. 5 to 7 , the on-off control device 60 is preferably a shunt air supply device, which may include a casing, at least two air outlets disposed on the peripheral wall of the casing, and an adjustment member rotatably disposed inside the housing; the adjustment member has at least one shielding portion configured to controllably shield the at least two air outlets to adjust the respective air outlet areas of the at least two air outlets; and each The air outlet communicates with a storage space 21 through the corresponding air supply port. In some specific embodiments, such as branch air supply devices in CN104879994A, CN106196840A and so on. The rotation of the adjusting piece can be driven by the motor and the gear transmission mechanism. For example, when there are three storage spaces 21 and three air outlets, 7 or 8 air supply modes can be realized, such as fully open, fully closed, one air outlet is open (3 types), and two air outlets are open (3 types). )Wait.

In some embodiments of the present invention, as shown in FIGS. 2 to 5 , at least two storage spaces 21 are arranged in sequence along the vertical direction; the air duct system includes an air supply assembly 70 and a return air assembly 80 . The air supply assembly 70 is disposed at the rear of the first storage compartment, and has at least two air supply openings thereon; the on-off control device 60 is arranged in the air supply assembly 70 . The air return assembly 80 is disposed on a lateral side of the air supply assembly 70 and has at least two first air return ports 81 thereon.

Further, the at least one shelf 40 also separates the first storage compartment into the drawer space 22; the drawer space 22 is arranged on the lower side of the three storage spaces 21; The second air return port 82 is connected to the drawer space 22 and the cooling chamber.

Each shelf 40 is preferably a shelf board, a partition board, etc., and is provided with a sealing structure with the compartment wall of the first storage compartment. The rear side of the first door body 30 is also provided with at least one bottle seat 31 , and the lower part of each bottle seat 31 is located at the front side of a rack 40 , and when the first door body 30 is closed, each bottle seat 31 In contact with the shelf 40. Preferably, the lowermost storage space 21 and the bottle holder 31 on the front side thereof can allow airflow to flow downward to the drawer space 22 . The drawer space 22 may also be further divided into a plurality of sub-drawer spaces 22 by a partition plate to prevent a plurality of drawers 23 .

In some preferred embodiments of the present invention, the number of storage spaces 21 is three, and the number of first air return openings 81 is three; . Each first air return port 81 is disposed on the lower side of the corresponding storage space 21 ; the second air return port 82 is disposed on the lower side of the drawer space 22 . The at least two air outlets include a first air outlet, and a second air outlet and a third air outlet arranged on both sides of the first air outlet; the first air outlet faces upward.

The air supply ports communicating with the storage space 21 on the uppermost side are the first air supply ports, and there are four air supply ports, which are respectively arranged on both sides of the upper part and the two sides of the middle part of the storage space 21 . There are two air supply openings communicating with the storage space 21 in the middle, and there are two air supply openings, which are respectively arranged on both sides of the upper part of the storage space 21 . The air supply port that communicates with the lowermost storage space 21 is the third air supply port, and there is only one air supply port, which is provided on the upper side of the storage space 21 .

Further, as shown in FIGS. 6 and 7 , the air supply assembly 70 is provided with a first air supply air duct 71 , a second air supply air duct 72 , a spanning air duct 73 and a third air supply air duct 74 . The lower end of the first air supply air duct 71 is connected with the first air outlet, and the upper part is connected with the four first air supply ports. The second air supply air duct 72 is arranged on one side of the first air supply air duct 71, the lower end is connected to the second air outlet, and the upper end is connected to a second air supply port and the spanning air duct 73, and the spanning air duct 73 spans the first air supply The air duct 71 is connected to another second air outlet. The third air supply air duct 74 is disposed on the other side of the first air supply air duct 71 , the lower end is connected with the third air outlet, and the upper end is connected with the third air supply port. Preferably, both the third air supply air duct 74 and the third air supply port are located on the side of the first air supply air duct 71 away from the return air assembly 80 . As shown in FIG. 8 , a return air duct is provided in the return air assembly 80 , and each first air return port 81 is communicated with the return air duct. The return air duct has a total return air port 83, which communicates with the cooling chamber. The air supply assembly 70 also has an air inlet, which can be communicated with the cooling chamber through an air inlet pipeline, and a fan 28 for promoting airflow can be provided at the outlet of the cooling chamber.

The area ratio between the uppermost first air return port 81 and the first air return port 81 below it is 2 to 3; the area ratio between the lowermost first air return port 81 and the first air return port 81 above it is 1/ 2 to 7/10; the area ratio between the lowermost first air return port 81 and the second air return port 82 is 1/10 to 1/5. In order to facilitate control, at least two temperature sensors 51 are also provided in the air supply assembly 70 to detect the temperature in each storage space 21 respectively, so that the refrigerating and freezing apparatus can be controlled according to the temperature detected by the temperature sensor 51 . Each temperature sensor 51 can sense the temperature change of the corresponding storage space 21 .

In the embodiment of the present invention, as shown in FIG. 4 and FIG. 5 , the cold air from the cooling chamber is delivered to the air supply assembly 70, and the air supply assembly 70 is equipped with an air volume distributor, that is, a branch air supply device, which distributes The device realizes independent air supply to each layer of air ducts or any combination of air supply, reaching each layer, returning air through the independent air return ports of each layer, and then converging into the return air duct assembly and returning to the cooling room together. A seal is formed between the rack 40 and the inner liner of the box body 20 to prevent the cold air from sinking and affecting the temperature fluctuation and control of the next layer. There are 2°C, 5°C, and 10°C selection buttons (or low, medium, and high) on the display control panel, and there will be a display of storage type information to remind the user what items are placed in what area. When the storage space 21 on the first layer (the storage space 21 on the uppermost side) needs to be supplied with air, the air will come out through the first air supply port and pass through the rack 40 to reach the bottle holder 31 and the first door body 30. With the setting of the air outlet 81, the air will be returned to the air through the first-layer return air outlet to complete a refrigeration cycle. When the temperature of the temperature sensor 51 corresponding to each layer of storage space 21 reaches the set temperature, the corresponding air outlet on the branch air supply device is closed to stop air supply. The temperature between the rack 40 and the bottle holder 31 is the same. The second-layer storage space 21 (the middle storage space 21 ) has the same air passage circulation as the first-layer storage space 21 . Part of the wind from the storage space 21 on the third layer (the lowermost storage space 21 ) will pass through the shelf 40 to reach the bottle holder 31 and the first door 30 , and the other part will go down to the drawer area to convey cold energy, and through the return The size of the tuyere is different to control the cooling ratio of each layer to achieve the balance of the set temperature. The temperature sensor 51 detects that the temperature of the storage space 21 is too high and needs air supply, and the distributor supplies air to which floor. Each storage space 21 and drawer space 22 is provided with an independent air return port. The size of each air return port has undergone strict calculation and simulation analysis, considering factors such as heat conduction and cooling capacity. The area ratio of the tuyere 81 and the four return air openings to the second air return opening 82 is preferably 6:2.5:1.5:10.

The refrigerating and freezing device of the embodiment of the present invention can realize multi-layer partition temperature control of the refrigerating compartment; each layer can realize three-speed temperature change; the user can freely choose the temperature range according to his own needs; the size ratio of the return air outlet is strictly calculated. to achieve temperature equilibrium. The setting structure of the air return port; the air return port, the rack 40 and the bottle base 31 cooperate with each other to realize the air circulation mode of the temperature change and humidity adjustment of the refrigerating and freezing device. Each display control panel can be disposed on the side wall of each storage space 21 and adjacent to the first door body 30 for easy operation. Users can arbitrarily adjust according to their own habits, which is convenient for users to use. And it can guide users to correctly place food storage and reduce waste. Foods that were previously afraid to put in the refrigerator can also be put in the refrigerator to extend their shelf life. The food can be stored in the best temperature and humidity environment, which greatly improves the preservation. The air is supplied only when the area on each floor needs to be supplied to prevent the food from being too cold and save energy.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives 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 (10)

1. a refrigeration and freezing device, is characterized in that, comprises: a first storage compartment, wherein at least one storage rack is arranged in the first storage compartment, so that the first storage compartment is divided into at least two storage spaces by the storage rack; a cooling chamber configured to accommodate an evaporator of the refrigerated freezer; An air duct system, the air duct system has at least two air supply ports, at least two first air return ports and an on-off control device, each of the air supply ports communicates with the cooling chamber and one of the storage spaces, each The first air return port communicates with one of the storage spaces and the cooling chamber; the on-off control device is configured to control the airflow from the cooling chamber to flow to one or more of the at least two air supply ports, and further controlling all or part of the airflow to the respective said storage spaces; and a gear position generating device configured to generate at least two gear position instruction groups; each of the gear position instruction groups includes a plurality of gear position instructions, and each of the gear position instruction groups correspondingly controls one of the storage spaces; each Each of the gear instructions includes control information for keeping the corresponding storage space at a target temperature or within a target temperature range, so that the refrigerating and freezing apparatus controls the on-off control according to each of the gear instructions The device is used to control the temperature in the corresponding storage space. 2. The refrigerating and freezing device according to claim 1, wherein the gear generating device comprises at least two display control panels, which are arranged on the inner wall of each of the storage spaces, and each of the display The control panel is configured to receive a signal and generate one of the gear position instructions of the gear position instruction group; and each of the display control panels is also configured to display a suggested type of items to be stored in the storage space; or, The gear position generating device includes at least two adjustment buttons, and an indication icon set corresponding to each of the gear position instructions of each of the adjustment buttons; each of the indication icons at least includes suggestions for the corresponding storage. Information on the types of items stored in the space. 3. The refrigerating and freezing device according to claim 1, characterized in that, At least two of the storage spaces are arranged in sequence along the vertical direction; the air duct system includes: an air supply assembly, provided with at least two of the air supply ports on the rear part of the first storage compartment; the on-off control device is arranged in the air supply assembly; and The air return assembly is arranged on a lateral side of the air supply assembly, and has at least two of the first air return ports. 4. The refrigerating and freezing device according to claim 3, wherein the on-off control device is a shunt air supply device, comprising a casing, at least two air outlets arranged on the peripheral wall of the casing, and an adjusting member rotatably disposed inside the housing; the adjusting member has at least one shielding portion configured to controllably shield the at least two air outlets so as to adjust each of the at least two air outlets and each of the air outlets communicates with one of the storage spaces through the corresponding air supply ports. 5. The refrigerating and freezing device according to claim 4, characterized in that, At least one of the storage racks also separates the first storage compartment into drawer spaces; the drawer spaces are arranged on the lower sides of the three storage spaces; the air duct system also has a A second air return port on the air return assembly, the second air return port communicates with the drawer space and the cooling chamber. 6. The refrigerating and freezing device according to claim 5, characterized in that, The number of the storage spaces is three, and the number of the first air return openings is three; each of the first air return openings is arranged on the lower side of the corresponding storage space; the second air return openings It is arranged on the lower side of the drawer space. 7. The refrigerating and freezing device according to claim 6, characterized in that, At least two of the air outlets include a first air outlet, and a second air outlet and a third air outlet arranged on both sides of the first air outlet; the first air outlet faces upward; The air supply ports communicating with the storage space on the uppermost side are the first air supply ports, and there are four air supply ports, which are respectively arranged on both sides of the upper part and both sides of the middle part of the storage space; The air supply ports communicating with the storage space in the middle are the second air supply ports, and there are two air supply ports, which are respectively arranged on both sides of the upper part of the storage space; The air supply port communicating with the lowermost storage space is a third air supply port, and there is one air supply port, which is arranged on the upper side of the storage space; The air supply assembly is provided with: the first air supply air duct, the lower end is connected with the first air outlet, and the upper part is connected with the four first air supply ports; The second air supply air duct and the spanning air duct, the second air supply air duct is arranged on one side of the first air supply air duct, the lower end is connected to the second air outlet, and the upper end is connected to one of the second air supply air ducts an air outlet and the spanning air duct, the spanning air duct spans the first air supply air duct and communicates with another of the second air supply openings; and The third air supply air duct is arranged on the other side of the first air supply air duct, the lower end is connected with the third air outlet, and the upper end is connected with the third air supply port. 8. The refrigerating and freezing device according to claim 6, characterized in that, The area ratio between the uppermost first air return port and the first air return port below it is 2 to 3; The area ratio between the first air return port at the bottom and the first air return port above it is 1/2 to 7/10; The area ratio between the lowermost first air return port and the second air return port is 1/10 to 1/5. 9. refrigerating and freezing device according to claim 5, is characterized in that, also comprises: a first door body, installed in the first storage compartment, configured to open or close the first storage compartment; At least one bottle seat is arranged on the rear side of the first door body, and the lower part of each bottle seat is located on the front side of one of the racks, and when the first door body is closed, each of the bottle seats is closed. The bottle holder is in contact with the rack. 10. The refrigerating and freezing device according to claim 3, characterized in that, A return air duct is arranged in the return air assembly, and each of the first air return ports is communicated with the return air duct; A sealing structure is provided between each of the racks and the compartment wall of the first storage compartment; The air supply assembly is further provided with at least two temperature sensors to detect the temperature in each of the storage spaces respectively.

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