CN111912153A

CN111912153A - Refrigerating and freezing device

Info

Publication number: CN111912153A
Application number: CN201910389730.8A
Authority: CN
Inventors: 朱小兵; 费斌; 程学丽; 李春阳; 姬立胜; 崔展鹏
Original assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Current assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-11-10
Also published as: EP3951291B1; WO2020228414A1; EP3951291A1; JP2022531013A; KR20210152545A; JP7280978B2; KR102580949B1; EP3951291A4

Abstract

The invention provides a refrigerating and freezing device. The method comprises the following steps: the first storage compartment is divided into at least two storage spaces; a cooling chamber; the air path system is provided with at least two air supply openings, at least two first air return openings and an on-off control device, each air supply opening is communicated with the cooling chamber and one storage space, and each first air return opening is communicated with one 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 outlets, so that all or part of the airflow is controlled to flow to the corresponding storage space; the gear generation device is configured to generate at least two gear instruction group instruction groups which comprise a plurality of gear instructions and correspondingly control one storage space; each gear instruction comprises control information for enabling the corresponding storage space to be at a target temperature, so that the refrigerating and freezing device controls the on-off control device according to each gear instruction, and then the temperature in the corresponding storage space is controlled.

Description

Refrigerating and freezing device

Technical Field

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

Background

With the development of social economy and the improvement of living standard of people, the refrigerator also becomes an indispensable household appliance in daily life of people. In the existing refrigerator cold storage chamber, for uniform temperature control, the uniform temperature of each layer is set to be 0-5 ℃, and the optimal storage temperature of all foods is different. If the user sets the temperature to be 0 ℃ low gear, the temperature of the whole refrigerating chamber is about 0 ℃. When food with the optimal temperature of more than 5 ℃ is stored at the temperature, the fresh-keeping period of the food can be greatly shortened, and the deterioration and the putrefaction of the food are accelerated.

Disclosure of Invention

In view of the above problems, the present invention has been made to provide a refrigerating and freezing device which overcomes or at least partially solves the above problems, and can realize independent partitions of the refrigerating chamber of the refrigerator, and can realize independent temperature adjustment of multiple levels of 2, 5, 10 (low, medium, high) and the like for each layer of the refrigerator, so that a user can adjust the temperature of each layer of the refrigerator according to the needs and habits of the user, and through balanced control of temperature and humidity, an optimal storage environment area for different foods can be achieved, and the optimal storage space for the foods can be guided to be correctly placed by the user.

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

the first storage chamber is internally provided with at least one rack, so that the first storage chamber is divided into at least two storage spaces by the rack;

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

the air path system is provided with at least two air supply openings, at least two first air return openings and an on-off control device, each air supply opening is communicated with the cooling chamber and the storage space, and each first air return opening is communicated with the storage space 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 openings, so as to control all or part of the airflow to flow to the corresponding storage space; and

a gear generation device configured to generate at least two gear instruction sets; each gear instruction group comprises a plurality of gear instructions, and each gear instruction group correspondingly controls one storage space; each gear instruction comprises control information for enabling the corresponding storage space to be at a target temperature or within a target temperature range, so that the refrigerating and freezing device controls the on-off control device according to each gear instruction, and then the temperature in the corresponding storage space is controlled.

Optionally, the gear generation device includes at least two display control panels disposed on an inner sidewall of each storage space, and each display control panel is configured to receive a signal and generate the gear instruction of one gear instruction group; each display control panel is further configured to display a suggestion of the type of the stored articles in the corresponding storage space; or the like, or, alternatively,

the gear generation device comprises at least two adjusting buttons and an indication icon which is arranged corresponding to each gear instruction of each adjusting button; each indication icon at least comprises information suggesting the type of the stored articles in the corresponding storage space.

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

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

and the return air assembly is arranged on one transverse side of the air supply assembly and is provided with at least two first return air inlets.

Optionally, the on-off control device is a shunt air supply device, and includes a housing, at least two air outlets disposed on a peripheral wall of the housing, and an adjusting member rotatably disposed inside the housing; the adjusting piece is provided with at least one shielding part which is configured to controllably shield at least two air outlets so as to adjust the air outlet areas of the at least two air outlets; and each air outlet is communicated with one storage space through the corresponding air supply outlet.

Optionally, at least one said rack further divides said first storage compartment into a drawer space; the drawer space is arranged at the lower sides of the three storage spaces; the air path system is also provided with a second air return opening arranged on the air return assembly, and the second air return opening is communicated 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 sequentially arranged along the vertical direction.

Optionally, the at least two air outlets include a first air outlet, and a second air outlet and a third air outlet which are arranged at two sides of the first air outlet; the first air outlet faces upwards;

the four air supply outlets which are communicated with the storage space at the uppermost side are first air supply outlets and are respectively arranged at two sides of the upper part and two sides of the middle part of the storage space;

the two air supply outlets communicated with the middle storage space are second air supply outlets and are respectively arranged on two sides of the upper part of the storage space;

the air supply outlet communicated with the storage space at the lowest side is a third air supply outlet, and is arranged on one side of the upper part of the storage space;

the air supply assembly is internally provided with:

the lower end of the first air supply duct is communicated with the first air outlet, and the upper part of the first air supply duct is communicated with the four first air supply outlets;

the second air supply duct is arranged on one side of the first air supply duct, the lower end of the second air supply duct is communicated with the second air outlet, the upper end of the second air supply duct is communicated with one second air supply outlet and the crossing air duct, and the crossing air duct crosses over the first air supply duct and is communicated with the other second air supply outlet; and

and the third air supply air channel is arranged on the other side of the first air supply air channel, the lower end of the third air supply air channel is communicated with the third air outlet, and the upper end of the third air supply air channel is communicated with the third air supply outlet.

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

an area ratio between the lowermost first return air opening and the first return air opening above the lowermost first return air opening is 1/2 to 7/10;

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

Optionally, the refrigeration and freezing apparatus further comprises:

the first door body is arranged in the first storage compartment and is configured to open or close the first storage compartment;

the bottle seat is arranged on the rear side of the first door body, the lower portion of each bottle seat is located on the front side of one rack, and when the first door body is closed, each bottle seat is in contact with the rack.

Optionally, a return air duct is arranged in the return air assembly, and each first return air inlet is communicated with the return air duct;

a sealing structure is arranged between each rack and the compartment wall of the first storage compartment;

still be provided with two at least temperature sensor in the air supply assembly to detect respectively every the temperature in the storing space.

The refrigerating and freezing device of the invention can realize independent partition of the refrigerating chamber of the refrigerator and independent adjustment of multi-level temperature of 2 ℃, 5 ℃, 10 ℃ (low, medium and high) and the like of each layer of partition because of the air path system and the gear generating device, so that a user can adjust the temperature of each layer of the refrigerator according to own needs and habits, and the optimal storage environment area for different foods is achieved through balanced control of temperature and humidity, and the optimal storage space for the foods is guided to be correctly placed by the user.

Furthermore, in the refrigerating and freezing device, the original micro-air duct technology can realize independent temperature control and quick refrigeration of each layer of the refrigerating chamber, reduce temperature fluctuation of each layer, keep fresh and save energy, realize independent adjustment of the temperature of each layer by 3 grades and the like, keep food in an optimal temperature interval, greatly improve the fresh-keeping period of the food, and ensure that the food is more convenient to use and saves energy.

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 invention 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 refrigerating and freezing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic partial block diagram of the refrigeration and freezing apparatus shown in FIG. 1;

fig. 3 is a schematic exploded view of a partial structure of the refrigeration freezer shown in fig. 1;

FIG. 4 is a schematic partial block diagram of the refrigeration-freezing apparatus shown in FIG. 1;

fig. 5 is a schematic internal structural view of the refrigerating and freezing apparatus shown in fig. 1;

FIG. 6 is a schematic block diagram of a blower assembly in the refrigeration chiller apparatus of FIG. 1;

FIG. 7 is a schematic block diagram of another perspective of the blower assembly of FIG. 6;

fig. 8 is a schematic structural view of a return air assembly in the refrigeration and freezing apparatus shown in fig. 1.

Detailed Description

Fig. 1 is a schematic configuration diagram of a refrigerating and freezing apparatus according to an embodiment of the present invention. As shown in fig. 1, and with reference to fig. 2-8, where the arrows indicate the direction of airflow, an embodiment of the present invention provides a refrigeration and freezing apparatus. The refrigerating and freezing device comprises a box body 20, wherein a storage chamber is limited in the box body 20, and the refrigerating and freezing device is also provided with a door body for opening and closing the storage chamber.

The storage compartments may include a first storage compartment, a second storage compartment, a third storage compartment, and the like. The first storage compartment may be a cold storage compartment, the second storage compartment may be a freezing compartment, and the third storage compartment may be a temperature-changing compartment. Accordingly, the door bodies 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 freezer compartment is typically in the range of-22 ℃ to-14 ℃. The temperature-changing chamber can be adjusted to-18 ℃ to 8 ℃ at will.

The refrigeration system is configured to provide cooling to the storage compartment. In some embodiments, the refrigeration system may be a refrigeration cycle system composed 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 compartment. Since the refrigeration system of a refrigeration and freezing apparatus is known per se to those skilled in the art, it will not be described herein. And a cooling chamber may be provided in the case 20, and particularly, may be provided at a rear side of the third storage compartment. The cooling chamber accommodates an evaporator 27. The number of cooling chambers and evaporators 27 may be one or more. When one evaporator 27 can be used, cold energy is provided for all the storage chambers; when the number of evaporators 27 is plural, each evaporator 27 can supply cold energy to one storage compartment.

In some embodiments of the present invention, as shown in fig. 2, at least one rack 40 is disposed in the first storage compartment, so that the first storage compartment is divided into at least two storage spaces 21 by the racks 40. The refrigerating and freezing apparatus further includes an air passage system and a gear generation device 50. The air path system is provided with at least two air supply openings, at least two first air return openings 81 and an on-off control device, each air supply opening is communicated with the cooling chamber and one storage space 21, and each first air return opening 81 is communicated with one storage space 21 and the cooling chamber; the on-off control device 60 is configured to control the flow of air from the cooling compartment to one or more of the at least two supply air outlets, and thus to control all or part of the air flow to the respective storage space 21. Specifically, the on-off control device 60 may allow the air flow from the cooling chamber to flow only to one storage space 21, or may allow the air flow to two or more storage spaces 21 at the same time, i.e., to adjust the air supply to each storage space 21.

Gear generation device 50 is configured to generate at least two gear command sets; each gear instruction group comprises a plurality of gear instructions, and each gear instruction group correspondingly controls one storage space 21; each gear instruction comprises control information for enabling the corresponding storage space 21 to be at a target temperature or within a target temperature range, so that the refrigerating and freezing device controls the on-off control device 60 according to each gear instruction, and further controls the temperature in the corresponding storage space 21.

For example, in some embodiments, the gear generating device 50 includes at least two display panels disposed on an inner sidewall of each storage space 21, each display panel configured to receive a signal and generate a gear command of one gear command set; and each display control panel is also configured to display a recommendation for the type of articles stored in the corresponding storage space 21. Each display control panel may be disposed adjacent to a corresponding storage space 21. Furthermore, each display control panel can adopt sliding, clicking and other modes to input information. In some alternative embodiments of the present invention, the gear generating device 50 may be the general touch screen display of a refrigeration and freezing device.

In other embodiments, the gear generating device 50 includes at least two adjustment buttons, and an indication icon provided corresponding to each gear instruction of each adjustment button. Each of the indication icons at least includes information suggesting a kind of the stored article in the corresponding storage space. Each adjusting button can be a mechanical button structure such as a knob. The indication icon can be an icon arranged near the adjusting button and arranged on the inner side of the refrigerator body, and can be arranged in modes of carving, silk-screen printing, hollow-out structures and the like. For example, the indication icon may be a symbol representing an article suggesting a kind of the article stored in the corresponding storage space. Further, each indication icon at least comprises a target temperature or a target temperature range in the corresponding storage space. The range generating device 50 may also include at least two indicator lights. Each gear instruction of each adjustment button is associated with an indicator light such that when the adjustment button indicates a respective gear instruction, the respective indicator light is turned on, thereby causing the respective indicator view to be highlighted, i.e., illuminated, for viewing by the user. Alternatively, the indication icon may be displayed by using a display screen, and a combination of the mechanical key and the display screen may be achieved. Further, the indication icon can also be directly a text, i.e. the display screen can display all information associated with the corresponding gear instruction.

In this embodiment, because of the air path system and the gear generating device 50, the independent partition of the refrigerating compartment of the refrigerator can be realized, and the independent temperature adjustment of multiple levels such as 2 ℃, 5 ℃, 10 ℃ (low, medium, high) can be realized for each layer of partition, so that the user can adjust the temperature of each layer of the refrigerator according to the needs and habits of the user, and the optimal storage environment area for different foods can be achieved through the balanced control of temperature and humidity, and the optimal storage space for the user to correctly place the foods can be guided. Prior to this application, the temperature of each layer of the refrigerator was the same, and the optimal storage temperature and humidity for different foods were different, resulting in users darting to put some low storage temperature ready-to-eat, tropical fruits into the refrigerator. The food can not be eaten immediately when the temperature is too low, and the user can only put the food outside; the tropical fruits need to be stored in an interval of 8-10 ℃ for the best storage time and are not dare to be placed in a refrigerator. The food put into the refrigerator is not in the optimal temperature range, the food decays fast, and the waste is serious. The embodiment of the invention can freely adjust the temperature of each layer of the cold storage of the refrigerator according to the requirements of users, so that the food is stored in the optimal storage space, and the users are guided to correctly place the optimal storage space for the food. Every storing space 21 all has self independent air-out and independent return air, and every storing space 21 can both realize the many grades of changes of temperature, freely switches.

Further, when the number of gear commands of each gear command group is large, for example, each target temperature in the storage space changes by one degree centigrade, the gear commands can be used as a new gear. This may also be referred to as stepless gear adjustment. For example, there may be 11 steps between 0 ℃ and 10 ℃, so that each storage space 21 may be adjusted to any temperature between 0 ℃ and 10 ℃. Of course, only three ranges of 0 ℃ ice temperature area, 4 ℃ golden area and 10 ℃ hot band fruit area can be arranged between 0 ℃ and 10 ℃.

In some embodiments of the present invention, as shown in fig. 5 to 7, the on-off control device 60 is preferably a shunt air supply device, and may include a housing, at least two air outlets disposed on a peripheral wall of the housing, and an adjusting member rotatably disposed inside the housing; the adjusting piece is provided with at least one shielding part and is configured to controllably shield the at least two air outlets so as to adjust the air outlet areas of the at least two air outlets; and each air outlet is communicated with one storage space 21 through a corresponding air supply outlet. In some specific embodiments, such as the branched air blowing device in CN104879994A, CN106196840A, etc. The rotation of the adjusting piece can be driven by a motor and a gear transmission mechanism. For example, when the storage space 21 and the air outlets are three, 7 or 8 air supply modes can be realized, such as fully open, fully closed, one air outlet is opened (3), two air outlets are opened (3), and the like.

In some embodiments of the present invention, as shown in fig. 2 to 5, at least two storage spaces 21 are sequentially arranged in a vertical direction; the duct system includes a supply air assembly 70 and a return air assembly 80. The air supply assembly 70 is arranged at the rear part of the first storage compartment and is provided with at least two air supply outlets; the on-off control device 60 is disposed in the air supply assembly 70. The return air assembly 80 is disposed at one lateral side of the blowing assembly 70 and has at least two first return air openings 81.

Further, at least one rack 40 also divides the first storage compartment into a drawer space 22; the drawer space 22 is provided at the lower side of the three storage spaces 21; the duct system further has a second return air inlet 82 disposed on the return air assembly 80, and the second return air inlet 82 communicates the drawer space 22 and the cooling compartment.

Each rack 40 is preferably a rack plate, a divider plate, etc., and a sealing structure is provided between the rack plate and the compartment wall of the first storage compartment. At least one bottle seat 31 is further disposed at the rear side of the first door 30, and the lower portion of each bottle seat 31 is located at the front side of one rack 40, and when the first door 30 is closed, each bottle seat 31 contacts with the rack 40. Preferably, an air flow may be allowed to flow down to the drawer space 22 between the lowermost storage space 21 and the bottle seat 31 at the front side thereof. The drawer space 22 may be further partitioned 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 the storage spaces 21 is three, and the number of the first air-returning openings 81 is three; the three first air return ports 81 and the second air return ports 82 are sequentially provided in the up-down direction. Each first air return opening 81 is arranged at one side of the lower part of the corresponding storage space 21; the second air return opening 82 is provided at a lower side of the drawer space 22. The at least two air outlets comprise a first air outlet, a second air outlet and a third air outlet which are arranged at two sides of the first air outlet; the first air outlet faces upwards.

The four air supply outlets communicated with the storage space 21 at the uppermost side are first air supply outlets and are respectively arranged at two sides of the upper part and two sides of the middle part of the storage space 21. The two air supply outlets communicated with the middle storage space 21 are second air supply outlets and are respectively arranged at two sides of the upper part of the storage space 21. The air supply port communicating with the lowermost storage space 21 is a third air supply port, and is provided on the upper side of the storage space 21.

Further, as shown in fig. 6 and 7, a first air supply duct 71, a second air supply duct 72, a cross-over duct 73, and a third air supply duct 74 are provided in the air supply assembly 70. The lower end of the first air supply duct 71 is communicated with the first air outlet, and the upper part of the first air supply duct is communicated with four first air supply outlets. The second air supply duct 72 is disposed at one side of the first air supply duct 71, the lower end of the second air supply duct is communicated with the second air outlet, the upper end of the second air supply duct is communicated with one second air supply outlet and the cross-over duct 73, and the cross-over duct 73 crosses over the first air supply duct 71 and is communicated with the other second air supply outlet. And a third air supply duct 74 disposed on the other side of the first air supply duct 71, the lower end of which communicates with the third air outlet and the upper end of which communicates with the third air outlet. Preferably, the third supply air duct 74 and the third supply air outlet are located on the side of the first supply air duct 71 remote 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 of the first return air inlets 81 is communicated with the return air duct. The return air duct has a main return air inlet 83 communicating with the cooling chamber. The air supply assembly 70 also has an air inlet which can be communicated with the cooling chamber via an air inlet pipeline, and the outlet of the cooling chamber can be provided with a fan 28 for promoting the air flow.

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

In the embodiment of the present invention, as shown in fig. 4 and 5, the cool air coming out of the cooling chamber is transmitted to the inside of the air supply assembly 70, an air volume distributor, i.e. a branch air supply device, is installed in the air supply assembly 70, and the distributor realizes independent air supply or combined arbitrary air supply to each layer of air path, reaches each layer, returns air through the independent air return opening of each layer, and then converges to the inside of the air return duct assembly to return to the cooling chamber together. The rack 40 and the inner container of the box 20 form a seal therebetween, so as to prevent the temperature fluctuation and control of the next layer from being affected by the sinking of cold air. The display control board is provided with 2 ℃, 5 ℃ and 10 ℃ selection buttons (or low, medium and high) for gear selection, and information display of storage types is displayed to remind a user of what articles are placed in what area. When the first layer of storage space 21 (the uppermost storage space 21) needs to supply air, the air comes out through the first air supply opening and reaches the bottle seat 31 and the first door 30 through the rack 40, and due to the arrangement of the first air return opening 81, the air is returned to return air through the first layer of air return opening, so that a refrigeration cycle is completed. When the temperature of the temperature sensor 51 corresponding to each layer of the storage space 21 reaches a set temperature, the corresponding air outlet of the branch air supply device is closed to stop air supply. The rack 40 and the bottle seat 31 have the same temperature. The second-layer storage space 21 (the intermediate storage space 21) circulates in the same air passage as the first-layer storage space 21. One part of the air in the third layer of the storage space 21 (the storage space 21 at the lowest side) reaches the bottle seat 31 and the first door body 30 through the rack 40, the other part of the air goes downwards to the drawer area to convey cold, the cold proportioning of each layer is controlled through the difference of the sizes of the air return openings, and the balance of the set temperature is achieved. The temperature sensor 51 detects that the temperature of the storage space 21 is higher than the temperature of the air to be supplied, and the distributor supplies air to the layer. An independent air return opening is arranged in each storage space 21 and each drawer space 22, the size of each air return opening is strictly calculated and simulated and analyzed, factors such as heat conduction and refrigerating capacity are considered, and the area ratio of the three first air return openings 81 from top to bottom and the four air return openings of the second air return openings 82 is preferably 6:2.5:1.5: 10.

The refrigeration and freezing device can realize multilayer partition temperature control of the refrigeration chamber; each layer can realize three-gear temperature change; the user selects the temperature interval according to the needs; the size ratio of the air return opening is strictly calculated to achieve the temperature balance. The arrangement structure mode of the air return inlet; the air return opening, the rack 40 and the bottle seat 31 are mutually matched to realize the air path circulation mode of temperature change adjustment and humidity adjustment of the refrigerating and freezing device. Each display control panel can be arranged on the side wall of each storage space 21 and close to the position of the first door body 30, so that the operation is convenient. The user can adjust the device freely according to own habits, and the device is convenient for the user to use. And can guide the user to correctly place the food for storage, reduce extravagantly. Foods that were previously dare to be put in the refrigerator can also be put in the refrigerator to prolong the shelf life. The food can be stored in the optimal temperature and humidity environment, and the freshness can be greatly improved. Air is supplied when air supply is needed in each layer area, so that food is prevented from being overcooled, and energy is saved.

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

Claims

1. A refrigeration freezer apparatus, comprising:

2. A refrigerator-freezer according to claim 1, wherein the range-generating device comprises at least two display panels disposed on an interior side wall of each of the storage spaces, each display panel being configured to receive a signal and generate the range command of one of the range command sets; each display control panel is further configured to display a suggestion of the type of the stored articles in the corresponding storage space; or the like, or, alternatively,

3. A refrigerator-freezer according to claim 1,

at least two storage spaces are sequentially arranged along the vertical direction; the air path system includes:

4. A refrigerator-freezer according to claim 3, wherein the on-off control device is a branched air supply device comprising a housing, at least two air outlets provided in a peripheral wall of the housing, and an adjusting member rotatably provided inside the housing; the adjusting piece is provided with at least one shielding part which is configured to controllably shield at least two air outlets so as to adjust the air outlet areas of the at least two air outlets; and each air outlet is communicated with one storage space through the corresponding air supply outlet.

5. A refrigerator-freezer according to claim 4,

the at least one rack also divides the first storage compartment into drawer spaces; the drawer space is arranged at the lower sides of the three storage spaces; the air path system is also provided with a second air return opening arranged on the air return assembly, and the second air return opening is communicated with the drawer space and the cooling chamber.

6. A refrigerator-freezer according to claim 5,

the number of the storage spaces is three, and the number of the first air return openings is three; each first air return opening is arranged on one side of the lower part of the corresponding storage space; the second air return opening is arranged on one side of the lower portion of the drawer space.

7. A refrigerator-freezer according to claim 6,

the at least two air outlets comprise a first air outlet, a second air outlet and a third air outlet which are arranged at two sides of the first air outlet; the first air outlet faces upwards;

the air supply assembly is internally provided with:

8. A refrigerator-freezer according to claim 6,

the area ratio between the uppermost first air return opening and the first air return opening below the uppermost first air return opening is 2 to 3;

9. A refrigerator-freezer according to claim 5, further comprising:

10. A refrigerator-freezer according to claim 3,

a return air duct is arranged in the return air assembly, and each first return air inlet is communicated with the return air duct;