Refrigeration appliance

Abstract

The utility model provides a refrigeration appliance. The refrigeration appliance comprises a box body provided with a chamber and a refrigeration cabin, and a refrigerator is installed in the refrigeration cabin; the fresh-keeping container is arranged in the compartment, a plurality of flow guide ribs are arranged on the outer surface of the fresh-keeping container, and flow guide air channels are formed among the flow guide ribs; the cold supply channel is communicated with the refrigeration cabin and the compartment and is provided with an air inlet corresponding to the flow guide air duct; cold air of the refrigeration cabin flows into the compartment and out of the fresh-keeping container through the air inlet and flows on the outer surface of the fresh-keeping container along the flow guide air channel. Thus, the fresh-keeping container can be rapidly cooled, cooling uniformity can be guaranteed, local high temperature in the fresh-keeping container is avoided, meanwhile, the environment in the fresh-keeping container cannot be affected, and severe fluctuation of the fresh-keeping environment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a refrigeration appliance. BACKGROUND

[0002] At present, with the popularization and application of air-cooled refrigerators, the air-cooled refrigerators are more and more favored by consumers. The refrigeration principle of the air-cooled refrigerator is to use circulating air to refrigerate. When the air with high temperature flows through the built-in evaporator, heat exchange occurs directly between the two, and the temperature of the air is reduced. The cold air after heat exchange is blown into the air-cooled refrigerator, thereby reducing the temperature of the air-cooled refrigerator. However, how to improve the refrigeration effect of the air-cooled refrigerator has become the focus of research and development of the air-cooled refrigerator.

[0003] For the existing refrigerator with a sealed fresh-keeping container, the air supply mode is usually that the cold air is directly sent to the inside of the sealed fresh-keeping container, which can cause the environment in the fresh-keeping container to fluctuate sharply. Another type of technology focuses on how to realize cooling supply through control methods in order to efficiently reduce the temperature and maintain the stability of the fresh-keeping environment.

[0004] In view of the above status, the present application makes technical improvements from the structure to realize efficient and uniform cooling of the sealed fresh-keeping container. SUMMARY

[0005] In view of the above-mentioned technical problems, the purpose of the utility model is to provide a refrigeration appliance.

[0006] To achieve the above-mentioned purpose, an embodiment provides a refrigeration appliance. The refrigeration appliance comprises:

[0007] a cabinet body provided with a chamber and a refrigeration cabin, wherein a refrigeration device is installed in the refrigeration cabin;

[0008] a fresh-keeping container provided in the chamber, wherein the outer surface of the fresh-keeping container is provided with a plurality of guide ribs, and a guide air duct is formed between the guide ribs;

[0009] a cooling supply channel communicating the refrigeration cabin and the chamber, wherein the cooling supply channel has an air inlet corresponding to the guide air duct; and the cold air in the refrigeration cabin flows into the chamber and the outside of the fresh-keeping container through the air inlet, and flows along the guide air duct on the outer surface of the fresh-keeping container.

[0010] Preferably, the cabinet body comprises an inner container;

[0011] The refrigeration appliance comprises a door plate and a fresh-keeping cylinder assembled in the inner container, wherein the fresh-keeping cylinder encloses the chamber with an open front, and the door plate is movably arranged at the opening and used for opening and closing the chamber.

[0012] The fresh-keeping container comprises a drawer movably accommodated in the fresh-keeping barrel, the drawer comprises a box body having a taking opening, and a cover plate opening and closing the taking opening, the box body and the door plate are fixedly connected;

[0013] The plurality of guide ribs are arranged on the outer surface of the drawer.

[0014] Preferably, the air inlet is arranged on the upper portion of the rear wall of the fresh-keeping barrel and is higher than the cover plate;

[0015] The plurality of guide ribs comprise first guide ribs and second guide ribs arranged on the cover plate, and the first guide ribs and the second guide ribs are arranged opposite to each other;

[0016] The guide air duct is formed between the first guide ribs and the second guide ribs, and the guide air duct faces the air inlet to guide the cold air to flow forward along the cover plate.

[0017] Preferably, one of the cover plate and the box body is provided with a convex column on the left and right sides, and the other is provided with a limiting hook;

[0018] The convex column is inserted into the limiting hook to limit the cover plate from moving forward and backward with the box body, and when the box body is pulled out forward from the fresh-keeping barrel, the cover plate is hung in the fresh-keeping barrel under the cooperation of the convex column and the limiting hook.

[0019] Preferably, the refrigeration appliance further comprises a gas regulating unit and a gas regulating channel, the gas regulating channel being used for conveying a fresh-keeping atmosphere from the gas regulating unit to the inside of the drawer;

[0020] The cover plate is provided with a gas regulating inlet, and the gas regulating channel communicates to the inside of the drawer via the gas regulating inlet.

[0021] Preferably, the box body comprises an inner container surrounding the chamber;

[0022] The fresh-keeping container comprises a fresh-keeping barrel assembled in the inner container and a door plate sealingly closing the fresh-keeping barrel, and the plurality of guide ribs are arranged on the outer surface of the fresh-keeping barrel.

[0023] Preferably, the refrigeration appliance further has an air duct cover plate assembled at the rear wall of the inner container and a shielding plate located above the fresh-keeping barrel;

[0024] The air inlet is arranged on the air duct cover plate and is higher than the top wall of the fresh-keeping barrel and lower than the shielding plate;

[0025] The plurality of guide ribs comprise first guide ribs and second guide ribs arranged on the top wall of the fresh-keeping barrel, and the first guide ribs and the second guide ribs are arranged opposite to each other;

[0026] The air guide channel is formed between the first air guide fin and the second air guide fin, and faces the air inlet to guide the cold air to flow forward along the preservation cylinder.

[0027] Preferably, the respective rear ends of the first air guide fin and the second air guide fin are respectively located outside the air inlet in the left-right direction;

[0028] The air guide channel comprises a relatively rear expansion section and a relatively front equal-width section, the left-right width of the expansion section gradually increases from front to rear, and the left-right width of the equal-width section is constant from front to rear.

[0029] Preferably, the preservation container further comprises a window, the window is in communication with the interior of the preservation container and the chamber, and the window is exposed to the air guide channel;

[0030] The window is sealed and covered with a gas barrier and moisture permeable film, and the gas barrier and moisture permeable film is configured to allow water vapor to enter or exit the interior of the drawer unidirectionally.

[0031] Preferably, the refrigeration appliance further comprises:

[0032] A modified atmosphere unit is provided outside the preservation container and is used to form a preservation atmosphere;

[0033] A modified atmosphere channel is in communication with the modified atmosphere unit and the interior of the preservation container to allow the preservation atmosphere to enter the interior of the preservation container.

[0034] Preferably, the modified atmosphere unit is an electrolytic modified atmosphere unit configured to form a preservation atmosphere through an electrochemical reaction, and comprises an anode, a cathode, and an inner cavity capable of containing an electrolyte;

[0035] One side of the cathode is exposed to the inner cavity and the other side is exposed to the modified atmosphere channel, and the cathode is used to consume oxygen in the modified atmosphere channel through an electrochemical reaction to make the formed preservation atmosphere in an oxygen-poor state;

[0036] Alternatively, one side or both sides of the anode are exposed to the inner cavity, and the modified atmosphere channel is in communication with the inner cavity, and the anode is used to generate oxygen in the inner cavity through an electrochemical reaction to make the formed preservation atmosphere in an oxygen-rich state.

[0037] Preferably, the plurality of air guide fins further comprise a plurality of third air guide fins arranged between the first air guide fin and the second air guide fin;

[0038] The third air guide fins divide the expansion section into at least two sub-air guide channels, and the at least two sub-air guide channels are arranged side by side.

[0039] Preferably, at the expansion section of the air guide duct, at least part of the first air guide rib and / or the second air guide rib is arranged to extend obliquely at an angle of 30-60° to the front-rear direction.

[0040] Preferably, the first air guide rib and / or the second air guide rib is arranged to extend continuously from the rear end to the front end; or,

[0041] At the uniform-width section of the air guide duct, the first air guide rib and / or the second air guide rib is arranged to extend discontinuously with a plurality of openings for the cold air to be shunted to the left side and / or the right side of the fresh-keeping container.

[0042] Preferably, the refrigeration appliance comprises a temperature sensor, which is mounted on the fresh-keeping container and located outside the air guide duct.

[0043] Preferably, the fresh-keeping container has a modified atmosphere inlet, and the modified atmosphere channel is communicated to the inside of the fresh-keeping container via the modified atmosphere inlet.

[0044] The modified atmosphere inlet and the temperature sensor are arranged adjacently.

[0045] The fresh-keeping container further has a surrounding plate, which surrounds the modified atmosphere inlet and the temperature sensor and protrudes from the outer surface of the fresh-keeping container compared with the air guide rib.

[0046] Compared with the prior art, the embodiment of the present application has the beneficial effects that: by arranging the air guide rib outside the fresh-keeping container, the cold air can flow along the outer surface of the fresh-keeping container, which not only can realize rapid cooling of the fresh-keeping container, but also can ensure cooling uniformity, avoid local high temperature in the fresh-keeping container, and meanwhile will not affect the environment in the fresh-keeping container, avoiding drastic fluctuation of the fresh-keeping environment. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a structural schematic view of the refrigeration appliance of an embodiment of the present application;

[0048] Figure 2 is a schematic view of part of the structure of the refrigeration appliance of an embodiment of the present application;

[0049] Figure 3 is Figure 2 is a local sectional view of the E-E sectional line in FIG.

[0050] Figure 4 is a schematic view of part of the structure of the refrigeration appliance of an embodiment of the present application, which is compared with Figure 2 at least the shielding plate is omitted;

[0051] Figure 5is a partial structure exploded view of the refrigeration appliance of one embodiment of the present application;

[0052] Figure 6 is a schematic view of the back of the preservation cylinder and other components of one embodiment of the present application;

[0053] Figure 7 is Figure 2 is a partial sectional view of the A-A section line in the middle;

[0054] Figure 8 is Figure 2 is a partial sectional view of the B-B section line in the middle;

[0055] Figure 9 is Figure 2 is a partial sectional view of the C-C section line in the middle;

[0056] Figure 10 is a structure schematic view of the drawer of one embodiment of the present application;

[0057] Figure 11 is a structure schematic view of the air conditioning unit of one embodiment of the present application;

[0058] Figure 12 is a sectional view along Figure 11 is a sectional view along the D-D section line in the middle;

[0059] Figure 13 is a fluid communication schematic block diagram of the air conditioning unit and two preservation containers of the refrigeration appliance of one embodiment of the present application. DETAILED DESCRIPTION

[0060] The present application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and the structural, method, or functional changes made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the present application.

[0061] In each of the drawings of the present application, some dimensions of structures or parts are exaggerated relative to other structures or parts for the purpose of illustration, and thus are only used to illustrate the basic structure of the subject matter of the present application.

[0062] As used herein, terms, such as "upper," "above," "lower," "below," and the like, that are used in relation to spatially relative positions are described for the purpose of explaining the present application as shown in the figures. The spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, elements described as being "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0063] Referring to Figure 1 The utility model provides a refrigeration appliance 100.

[0064] In the drawings, the refrigeration appliance 100 can be specifically provided as a refrigerator, which can be a household refrigerator or used as a commercial refrigerator.

[0065] The basic structure of the refrigeration appliance 100 of the utility model will be introduced first. Specifically, the refrigeration appliance 100 comprises a cabinet 10, a door body 20 and a refrigeration system.

[0066] The cabinet 10 comprises a cabinet shell 11, an inner container 12 and a thermal insulation layer. The cabinet shell 11 constitutes part of the appearance of the refrigeration appliance 100, and in the embodiment of the drawings, the cabinet shell 11 is generally in the form of a cabinet structure with a back plate, a top plate, a bottom plate, a left side plate and a right side plate; the inner container 12 is sleeved inside the cabinet shell 11 and is arranged in a spaced manner with the cabinet shell 11 to form a space between the cabinet shell 11 and the inner container 12; and the thermal insulation layer is filled in the space, and specifically, the thermal insulation layer can comprise a thermal insulation plate and foamed material.

[0067] The inner container 12 encloses a chamber 101, which is set to a storage temperature, and can be a freezing chamber, a refrigerating chamber or a variable temperature chamber, and is preferably a refrigerating chamber.

[0068] The number of the door body 20 is one or more, each of which is movably connected to the front side of the cabinet 10 and used to open and close the chamber 101. For example, when the door body 20 opens the chamber 101, the user can take or put articles in the chamber 101; when the door body 20 closes the chamber 101, the chamber 101 is basically in a closed state, and the user cannot take or put articles, and even the low-temperature gas in the chamber 101 cannot pass through the joint between the door body 20 and the cabinet 10 to enter or exit the chamber 101, so as to realize low-temperature storage.

[0069] The refrigeration system comprises a refrigeration device, which is used to provide cold energy for the refrigeration appliance 100 so as to maintain a low-temperature storage environment of the chamber 101.

[0070] The specific structure of the refrigeration system has various embodiments in the art. For example, in one embodiment, the refrigeration system can be configured as a thermoelectric refrigeration system, and the refrigeration device is configured as a semiconductor refrigeration sheet; in another embodiment, the refrigeration system can be configured as a vapor compression refrigeration system, and the refrigeration device is configured as an evaporator, in addition to a compressor, a condenser, a throttling element, etc., the compressor, the condenser, the throttling element and the evaporator are connected in series to form a circulation pipeline, under the action of the compressor, the refrigerant flows in the circulation pipeline and realizes heat absorption and heat release based on phase change, and then exchanges heat with air at the evaporator to prepare cold air required by the chamber 101.

[0071] In the utility model, the box 10 is further provided with a refrigeration cabin and a cold air air duct.

[0072] The refrigeration cabin is installed with the refrigeration device, as described above, when the refrigeration system is started, the refrigeration device can exchange heat with air in the refrigeration cabin to make the air in the refrigeration cabin become cold air.

[0073] In an optional embodiment, the refrigeration cabin can be arranged in the chamber 101 or other positions except the chamber 101.

[0074] The cold air air duct communicates the refrigeration cabin and the chamber 101, so that the cold air circulates between the refrigeration cabin and the chamber 101 to provide cold air for the chamber 101.

[0075] For example, the cold air air duct can include a supply air duct and a return air duct. The supply air duct communicates the refrigeration cabin and the chamber 101 to make the cold air flow from the refrigeration cabin to the chamber 101 along the supply air duct; the return air duct communicates the refrigeration cabin and the chamber 101 to make the cold air flow from the chamber 101 back to the refrigeration cabin along the return air duct.

[0076] Of course, in order to meet the refrigeration requirements of the chamber 101, the connection mode of the cold air air duct, the refrigeration cabin and the chamber 101 has various feasible modes, which are disclosed in the art, and will not be described here.

[0077] Optionally, referring to Figures 2 to 6 The box 10 includes an air duct cover plate 13 assembled at the rear wall of the inner container 12, and the refrigeration cabin and / or part or all of the cold air air duct are formed between the air duct cover plate 13 and the rear wall of the inner container 12.

[0078] In the utility model, the refrigeration device 100 includes a fresh-keeping container 500B and a cold supply channel 130B.

[0079] The fresh-keeping container 500B is arranged in the compartment 101, and a plurality of guide ribs are arranged on the outer surface of the fresh-keeping container 500B, and a guide air duct 461B is formed between the plurality of guide ribs.

[0080] The cooling channel 130B constitutes a part of the air duct described above, specifically, constitutes a part of the air supply duct, and is in communication with the refrigeration compartment and the compartment 101; the cooling channel 130B has an air inlet 131B, and the cold air in the refrigeration compartment can flow into the compartment 101 and the outside of the fresh-keeping container 500B through the air inlet 131B, and the air inlet 131B corresponds to the guide air duct 461B, so that the cold air flowing out of the air inlet 131B can flow along the guide air duct 461B on the outer surface of the fresh-keeping container 500B, thereby cooling the fresh-keeping environment in the fresh-keeping container 500B.

[0081] In this way, the structure of the present application can make the cold air flow along the outer surface of the fresh-keeping container by arranging the guide ribs on the outside of the fresh-keeping container, which can not only realize rapid cooling of the fresh-keeping container, but also ensure uniformity of cooling, avoid local high temperature in the fresh-keeping container, and at the same time, will not affect the environment in the fresh-keeping container, and avoid the dramatic fluctuation of the fresh-keeping environment.

[0082] In an embodiment, the fresh-keeping container 500B includes a fresh-keeping barrel 30B assembled in the inner container 12 and a door plate 50B sealingly closing the fresh-keeping barrel 30B, and the plurality of guide ribs are arranged on the outer surface of the fresh-keeping barrel 30B, so that the cold air flowing out of the air inlet 131B can flow along the guide air duct 461B on the outer surface of the fresh-keeping barrel 30B.

[0083] Specifically, the air inlet 131B is arranged on the air duct cover plate 13 and is higher than the top wall of the fresh-keeping barrel 30B.

[0084] The plurality of guide ribs include a first guide rib 4631B and a second guide rib 4632B arranged on the top wall of the fresh-keeping barrel 30B, and the first guide rib 4631B and the second guide rib 4632B are arranged opposite to each other; the guide air duct 461B is formed between the first guide rib 4631B and the second guide rib 4632B, and the guide air duct 461B is opposite to the air inlet 131B to guide the cold air to flow along the top wall of the fresh-keeping barrel 30B in a direction away from the air inlet 131B, specifically, to flow forward.

[0085] The first guide rib 4631B and the second guide rib 4632B respectively extend from the rear edge of the top wall of the fresh-keeping barrel 30B to the front edge of the top wall of the fresh-keeping barrel 30B, so that the cold air can flow from the rear to the front to flow through as much as possible the outside of the top wall of the fresh-keeping barrel 30B, thereby improving the refrigeration effect in the fresh-keeping barrel 30B.

[0086] The respective rear ends of the first and second flow guide ribs 4631B and 4632B are located outside the air inlet 131B in the left-right direction. That is, the rear end of the first flow guide rib 4631B is located to the left of the air inlet 131B in the left-right direction, and the rear end of the second flow guide rib 4632B is located to the right of the air inlet 131B in the left-right direction, so that the respective rear ends of the first and second flow guide ribs 4631B and 4632B are not directly in front of the air inlet 131B.

[0087] The flow guide duct 461B includes an expansion section 461Ba close to the air inlet 131B and a constant-width section relatively far from the air inlet 131B, that is, the expansion section 461Ba is arranged rearward relative to the constant-width section.

[0088] The expansion section 461Ba gradually increases in left-right width from front to back, and the constant-width section is substantially constant in left-right width from front to back.

[0089] Specifically, the first flow guide rib 4631B includes a first inclined section 4631Ba and a first straight section 4631Bb.

[0090] The first straight section 4631Bb is located near the left edge of the fresh-keeping tube 30B and extends in the front-rear direction, and the first inclined section 4631Ba extends in an inclined manner from back to front and from right to left, which is exemplified in the figure as including a multi-section structure with different inclination angles relative to the front-rear direction.

[0091] The second flow guide rib 4632B includes a second inclined section 4632Ba and a second straight section 4632Bb.

[0092] The second straight section 4632Bb is located near the right edge of the fresh-keeping tube 30B and extends in the front-rear direction, and the second inclined section 4632Ba extends in an inclined manner from back to front and from left to right, which is exemplified in the figure as including a multi-section structure with different inclination angles relative to the front-rear direction.

[0093] The constant-width section is formed between the first and second straight sections 4631Bb and 4632Bb.

[0094] The expansion section 461Ba is formed between the second inclined section 4632Ba and the second inclined section 4632Ba.

[0095] Preferably, at least a portion of the first inclined section 4631Ba is arranged to have an inclination angle relative to the front-rear direction within a range of 30° to 60°.

[0096] Similarly, at least a portion of the second inclined section 4632Ba is arranged to have an inclination angle relative to the front-rear direction within a range of 30° to 60°.

[0097] Of course, the specific structure of the first guide fin 4631B, the second guide fin 4632B and the guide air duct 461B is not limited to the optimal implementation described above.

[0098] Further preferably, the refrigeration appliance further comprises a shielding plate 15, which covers above the fresh-keeping cylinder 30B, and the air inlet 131B is located below the shielding plate 15, so that on the one hand, the fresh-keeping cylinder 30B can be prevented from being exposed to affect the appearance, and on the other hand, the key is that the cold air flowing out of the air inlet 131B can be limited below the shielding plate 15, so as to further ensure that the cold air can be near the fresh-keeping cylinder 30B without excessive dissipation, and the refrigeration effect of the fresh-keeping container 500 is improved.

[0099] In an embodiment, as shown in the figure, an opening is formed in front of the guide air duct 461B, so that the cold air flows out from the gap between the fresh-keeping container 500B and the shielding plate 15.

[0100] In the embodiment of the drawings, the first guide fin 4631B and the second guide fin 4632B continuously extend from the rear end to the front end.

[0101] In a variant embodiment, at the equal-width section of the guide air duct 461B, the first guide fin 4631B and the second guide fin 4632B can also be respectively arranged to extend discontinuously, for example, a plurality of openings are arranged on the first straight section 4631Bb, so that the first straight section 4631Bb is discontinuously extended; a plurality of openings are arranged on the second straight section 4632Bb, so that the second straight section 4632Bb is discontinuously extended. In this way, a part of the cold air in the guide air duct 461B can be diverted to the left and right sides of the fresh-keeping container 500B from these openings, so as to further increase the temperature uniformity in the fresh-keeping container 500B.

[0102] In addition, the plurality of guide fins further comprise a plurality of third guide fins 4633B arranged between the first guide fin 4631B and the second guide fin 4632B; the third guide fins 4633B divide the expansion section 461Ba into at least two sub-air ducts, and the at least two sub-air ducts are arranged side by side.

[0103] The refrigeration appliance 100 can further be provided with a cold air supply fan, which can be arranged in the refrigeration compartment and / or the cold air supply channel 130B, and the cold air supply fan can be used to drive the cold air in the refrigeration compartment to flow along the cold air supply channel 130B to the compartment 101.

[0104] Preferably, the cold air supply fan can operate at different rotating speeds, so as to adjust the air volume of the cold air.

[0105] Additionally, the refrigeration appliance 100 may also include a return cooling duct, which is at least partially located between the duct cover 13 and the rear wall of the inner liner 12, and connects the compartment 101 and the refrigeration chamber, so that cold air in the compartment 101 can return to the refrigeration chamber through the return cooling duct.

[0106] The recirculation channel forms part of the cold air duct mentioned above, specifically, it forms part of the return air duct.

[0107] Furthermore, the refrigeration appliance 100 includes a second temperature sensor, which is installed on the outside of the preservation container 500B, specifically on the outside of the preservation cylinder 30B and outside the air duct 461B.

[0108] In other words, most or even all of the cold air on the outer surface of the food preservation container 500B will not flow through the second temperature sensor. Thus, based on the temperature sensing results at this location, the accuracy of temperature control inside the food preservation container 500B can be greatly improved, avoiding food preservation degradation caused by local high temperatures.

[0109] In a preferred embodiment, the second temperature sensor is located at the rear left corner of the top wall of the preservation container 30B. This, combined with the proximity of the controlled atmosphere inlet 33B to the second temperature sensor, allows the sensor to promptly detect temperature fluctuations caused by the preservation atmosphere introduced by the controlled atmosphere inlet 33B. This information is then promptly relayed to the controller of the refrigeration appliance to control the cold air, thereby improving the temperature stability within the preservation container 500B. Of course, the location of the second temperature sensor is not limited to this.

[0110] More preferably, the reference Figure 4 The outer wall of the food preservation container 30B is provided with a mounting groove 420B, which has a detection port communicating with the interior of the food preservation container 30B. The second temperature sensor is fixedly installed inside the mounting groove 420B, with its detection end located at the detection port. Thus, the second temperature sensor can be installed on the outside of the food preservation container 30B and can detect the temperature inside the food preservation container 30B, with high sensitivity and avoiding damage to the second temperature sensor caused by condensation.

[0111] Furthermore, the preservation container 500B has a window 301B. Specifically, the window 301B is opened on the preservation tube 30B and connects the interior of the preservation container 500B with the air duct 461B.

[0112] The window 301B is sealed with a gas barrier and moisture permeable film configured to allow water vapor to pass out of the interior of the preservation cylinder 30B in one direction. In this way, water vapor in the preservation cylinder 30B can pass into the air guide channel 461B through the gas barrier and moisture permeable film, thereby avoiding excessive humidity in the preservation cylinder 30B that can cause condensation. At the same time, the cold air in the air guide channel 461B can also accelerate the air flow rate on the surface of the gas barrier and moisture permeable film, thereby promoting the passage of water vapor out of the preservation cylinder 30B.

[0113] In an embodiment, the window 301B is more specifically located between the first flat section 4631Bb and the second flat section 4632Bb. Of course, the present application is not limited thereto, and the window 301 can also be specifically provided at other positions of the preservation container 500B, such as the left wall or the right wall of the preservation cylinder 30B.

[0114] Furthermore, as described above, the gas barrier and moisture permeable film is configured to allow water vapor to pass out of the interior of the preservation cylinder 30B in one direction, so as to avoid excessive humidity in the preservation cylinder 30B, for example, the humidity in the preservation cylinder 30B is not more than 85%. In a variant, the gas barrier and moisture permeable film is configured to allow water vapor to pass into the interior of the preservation cylinder 30B in one direction, so as to maintain the humidity in the preservation cylinder 30B above a certain lower limit. In this way, different humidity requirements can be met inside the preservation cylinder 30B.

[0115] At the same time, the gas barrier and moisture permeable film can block the passage of gas, for example, the gas exchange between the interior and the exterior of the preservation cylinder 30B cannot be performed through the gas barrier and moisture permeable film.

[0116] The preservation container 500B is also provided with a grid plate, and the gas barrier and moisture permeable film is clamped and fixed by the grid plate and the preservation cylinder 30B.

[0117] The grid plate is provided with a hook around the periphery, which can be buckled in the card slot around the window 301B of the preservation cylinder 30B, so as to achieve the fixed installation of the grid plate and the preservation cylinder 30B. Of course, the mounting mode of the grid plate is not limited to the buckling mode.

[0118] Further, a humidity sensor can be provided in the drawer 40, which is used to sense the humidity value in the interior of the drawer 40. The controller of the refrigeration appliance 100 controls the operation of the cold air supply fan according to the humidity value, including controlling the start, stop and speed of the cold air supply fan.

[0119] Next, in addition to the above-mentioned preservation container 500B, the refrigeration appliance 100 also has another preservation container different from the preservation container 500B. In order to distinguish, the other preservation container is referred to as a second preservation container below.

[0120] Specifically, the refrigeration appliance 100 further has a preservation cylinder 30, a sealed second preservation container and a cooling supply channel 130.

[0121] The preservation cylinder 30 encloses a chamber 103 with an open front.

[0122] The second preservation container comprises a drawer 40 movably received in the preservation cylinder 30. The drawer 40 comprises a box body 41 and a cover plate 42, wherein: the box body 41 has an upper access opening, i.e. a user can access the interior of the box body 41 through the access opening; and the cover plate 42 movably fits at the access opening and is used to open and close the access opening.

[0123] Referring to Figures 7 to 10 The outer surface of the drawer 40 is provided with a plurality of flow guide ribs, and flow guide air ducts 461 are formed between the flow guide ribs.

[0124] The cooling supply channel 130 constitutes part of the cold air duct described above, specifically part of the air supply duct, and is in communication with the refrigeration compartment and the chamber 103. The cooling supply channel 130 has an air inlet 131 through which cold air from the refrigeration compartment can flow into the chamber 101 and outside the second preservation container (i.e. outside the drawer 40), and the air inlet 131 corresponds to the flow guide air ducts 461, so that the cold air flowing out of the air inlet 131 can flow along the flow guide air ducts 461 on the outer surface of the second preservation container (i.e. the outer surface of the drawer 40), thereby cooling the preservation environment inside the drawer 40.

[0125] In this way, the structure of the present application, by arranging flow guide ribs on the outside of the second preservation container, allows cold air to flow along the outer surface of the second preservation container, which not only achieves rapid cooling of the second preservation container, but also ensures uniformity of cooling and avoids local high temperatures in the second preservation container, while also not affecting the environment inside the second preservation container and avoiding drastic fluctuations in the preservation environment.

[0126] Furthermore, by arranging the preservation cylinder 30 to form the chamber 103 and arranging the second preservation container inside the preservation cylinder 30, the flow range of the cold air can be further narrowed and the refrigeration efficiency inside the second preservation container can be improved.

[0127] The cooling supply channel 130 is at least partially located between the air duct cover plate 13 and the rear wall of the inner container 12, and the air inlet 131 thereof is arranged on the preservation cylinder 30, specifically on the upper part of the rear wall of the preservation cylinder 30, and can be higher than the cover plate 42 of the drawer 40.

[0128] Thus, corresponding to the position of the air inlet 131, the cooling channel 130 also has an air inlet interface 132 formed on the air duct cover plate 13, which is opposite and connected to the air inlet 131. Thus, the cold air in the cooling channel 130 flows between the air duct cover plate 13 and the rear wall of the inner container 12, and then passes through the air inlet interface 132 and the air inlet 131 in sequence to flow into the chamber 103.

[0129] The refrigeration appliance 100 can also be provided with a second cooling fan, which can be arranged in the refrigeration compartment and / or the cooling channel 130, and can be used to drive the cold air in the refrigeration compartment to flow along the cooling channel 130 to the chamber 103.

[0130] Preferably, the cooling fan can operate at different rotational speeds to adjust the air volume of the cold air.

[0131] In addition, the refrigeration appliance 100 can also include a second return cold air duct, which is at least partially located between the air duct cover plate 13 and the rear wall of the inner container 12, and is in communication with the chamber 103 and the refrigeration compartment, so as to return the cold air in the chamber 103 to the refrigeration compartment through the second return cold air duct.

[0132] The second return cold air duct constitutes part of the cold air duct described above, and specifically constitutes part of the return air duct.

[0133] In an embodiment, the second return cold air duct includes a return air inlet 133 formed on the preservation cylinder 30, and the cold air in the preservation cylinder 30 enters the second return cold air duct through the return air inlet 133 and finally returns to the refrigeration compartment.

[0134] The position of the return air inlet 133, specifically the specific arrangement position, has multiple options. For example, the return air inlet 133 can be arranged at the lower part of the rear wall of the preservation cylinder 30, and specifically can be lower than the bottom wall of the box body 41 of the drawer 40; for another example, the return air inlet 133 can also be arranged at the middle part of the bottom wall of the preservation cylinder 30. However, the position of the return air inlet 133 is not limited thereto.

[0135] Further, the box body 41 is push-pull received in the preservation cylinder 30. For example, when the box body 41 located in the preservation cylinder 30 is pulled forward, the box body 41 moves forward through the opening and leaves the preservation cylinder 30 to allow the user to take or place the articles; and when the box body 41 located outside the preservation cylinder 30 is pushed backward, the box body 41 moves backward through the opening and enters the preservation cylinder 30.

[0136] The cover plate 42 is movably connected to the preservation cylinder 30, and when the box body 41 is pulled out of the preservation cylinder 30, the cover plate 42 is hung and supported on the preservation cylinder 30; and when the box body 41 is pushed into the preservation cylinder 30, the cover plate 42 is sealingly engaged at the article taking opening of the box body 41.

[0137] Specifically, the left and right sides of the cover plate 42 are provided with outwardly extending protruding columns 411, and the left wall 30b and the right wall 30d of the preservation cylinder 30 are provided with limiting hooks 32, and the protruding columns 411 are inserted into the limiting hooks 32.

[0138] When the box body 41 is accommodated in the preservation cylinder 30, the door plate 50 closes the opening of the preservation cylinder 30, and the box body 41 is in the accommodation state at this time, and the peripheral edge of the cover plate 42 is sealingly attached to the upper edge of the box body 41; when the box body 41 is completely withdrawn from the preservation cylinder 30, the door plate 50 opens the opening of the preservation cylinder 30, and the box body 41 is in the withdrawn state at this time, and the protruding columns 411 are fitted in the limiting hooks 32, so that the cover plate 42 is suspended and supported on the preservation cylinder 30 through the cooperation of the protruding columns 411 and the limiting hooks 32.

[0139] When the box body 41 changes from the accommodation state to the withdrawn state, or vice versa, the protruding columns 411 are always kept in the limiting hooks 32 to limit the forward or backward movement of the cover plate 42 along with the box body 41.

[0140] Further, on each of the left and right sides of the box body 41, two protruding columns 411 are arranged in front and back, and on each of the left and right sides of the preservation cylinder 30, two limiting hooks 32 are arranged to match the two protruding columns 411. The limiting hook 32 on the front side is higher than the limiting hook 32 on the rear side, so that when the box body 41 is in the withdrawn state, each protruding column 411 is fitted in the corresponding limiting hook 32, and the cover plate 42 is suspended and supported on the preservation cylinder 30 in an inclined state with the front end being higher and the rear end being lower. In this way, when the box body 41 is pushed into the preservation cylinder 30, it can more smoothly enter below the cover plate 42, avoiding interference and jamming.

[0141] Furthermore, the upper edge of the box body 41 is provided with a roller, and the cover plate 42 is provided with an upward groove 421.

[0142] When the box body 41 is in the accommodation state, the roller is embedded in the groove 421; when the box body 41 changes from the accommodation state to the withdrawn state, or vice versa, the roller is located outside the groove 421 and rolls along the cover plate 42. In this way, the relative movement between the box body 41 and the cover plate 42 can be facilitated.

[0143] Here, it can be understood that the positions of the roller and the matching groove 421 can be interchanged, that is, the groove 421 can be provided on the upper edge of the box body 41, and the roller can be provided on the cover plate 42. Similarly, the positions of the protruding column 411 and the limiting hook 32 can be interchanged, that is, the limiting hook 32 can be provided on the left and right sides of the cover plate 42, and the protruding column 411 can be provided on the preservation cylinder 30.

[0144] In one embodiment, the refrigeration appliance 100 further comprises a door panel 50.

[0145] The door panel 50 is fixedly connected with the box body 41, and can move synchronously with the box body 41, and can close the opening of the preservation cylinder 30, in other words, the preservation cylinder 30 and the door panel 50 jointly enclose a substantially sealed chamber 103.

[0146] In order to improve the refrigeration effect in the chamber 103, the refrigeration appliance 100 further comprises a thermal insulation piece 31, which is wrapped outside the preservation cylinder 30, so that the heat exchange between the cold air in the preservation cylinder 30 and the external chamber 101 where the preservation cylinder 30 is located can be reduced, thereby maximizing the refrigeration efficiency and temperature stability inside the drawer 40.

[0147] Optionally, the chemical composition of the thermal insulation piece 31 can be polyurethane board, polystyrene foam board (EPS), extruded polystyrene foam (XPS), etc., of course, it is not limited thereto, and any known thermal insulation material in the art can be implemented.

[0148] The plurality of guide ribs corresponding to the position of the air inlet 131 comprises a first guide rib 4631 and a second guide rib 4632 arranged on the cover plate 42, and the first guide rib 4631 and the second guide rib 4632 are arranged opposite to each other; a guide air duct 461 is formed between the first guide rib 4631 and the second guide rib 4632, and the guide air duct 461 is opposite to the air inlet 131 to guide the cold air to flow along the cover plate 42 away from the air inlet 131, specifically, to flow forward.

[0149] The first guide rib 4631 and the second guide rib 4632 respectively extend from the rear edge of the cover plate 42 to the front edge of the cover plate 42, so that the cold air can flow from rear to front, so as to flow through as many sides of the drawer 40 as possible, thereby improving the refrigeration effect inside the drawer 40.

[0150] The guide air duct 461 comprises an expansion section 461a close to the air inlet 131, which gradually increases in width from front to back; the guide air duct 461 further comprises a second constant-width section away from the air inlet 131, and the width of the second constant-width section is constant from front to back.

[0151] That is, the expansion section 461a is arranged rearward relative to the second constant-width section.

[0152] Specifically, the first guide rib 4631 comprises a first inclined section 4631a and a first straight section 4631b.

[0153] The first flat section 4631b is located near the left edge of the cover plate 42 and extends in the front-rear direction. The first inclined section 4631a extends in an inclined manner from back to front and from right to left, and in the example shown in the figure, includes a multi-section structure with different inclination angles in the front-rear direction.

[0154] The second flow guide fin 4632 includes a second inclined section 4632a and a second flat section 4632b.

[0155] The second flat section 4632b is located near the right edge of the preservation cylinder 30 and extends in the front-rear direction. The second inclined section 4632a extends in an inclined manner from back to front and from left to right, and in the example shown in the figure, includes a multi-section structure with different inclination angles in the front-rear direction.

[0156] The second equal-width section is formed between the first flat section 4631b and the second flat section 4632b.

[0157] The expansion section 461a is formed between the second inclined section 4632a and the second inclined section 4632a.

[0158] Preferably, at least a portion of the first inclined section 4631a is arranged to have an inclination angle in the front-rear direction within a range of 30°-60°.

[0159] Similarly, at least a portion of the second inclined section 4632a is arranged to have an inclination angle in the front-rear direction within a range of 30°-60°.

[0160] Of course, the specific structures of the first flow guide fin 4631, the second flow guide fin 4632, and the flow guide air duct 461 are not limited to the optimal implementation described above.

[0161] Further, the drawer 40 and the door plate 50 also have a second flow guide air duct 462, so that the cold air entering the preservation cylinder 30 first flows forward under the guidance of the flow guide air duct 461, then flows downward into the second flow guide air duct 462, and finally flows rearward through the bottom wall of the drawer 40 to reach the return air outlet 133, so as to increase the flow path of the cold air in the preservation cylinder 30 and thus to provide cooling for the interior of the drawer 40 as much as possible.

[0162] In the embodiment shown in the drawings, the first and second flow guides 4631 and 4632 are continuously extended. In a variant, the first and second flow guides 4631 and 4632 can be discontinuously extended, for example, the first flat section 4631b is provided with a plurality of openings so that the first flat section 4631b is discontinuously extended; the second flat section 4632b is provided with a plurality of openings so that the second flat section 4632b is discontinuously extended. In this way, a portion of the cold air in the air flow channel 461 can be diverted to the left and right sides of the drawer 40 from the openings, thereby further increasing the temperature uniformity in the drawer 40.

[0163] Next, the refrigeration appliance 100 comprises a temperature sensor mounted on the drawer 40 and located outside the air flow channel 46. That is, most or even all of the cold air in the fresh-keeping cylinder 30 does not flow through the temperature sensor, so that based on the temperature sensing result at this position, the accuracy of temperature control in the drawer 40 can be greatly improved, and the deterioration of preservation caused by local high temperature can be avoided.

[0164] In a preferred embodiment, the temperature sensor is located on the cover plate 42 and outside the air flow channel 461, that is, outside the plurality of flow guides.

[0165] Of course, the temperature sensor is not limited to being arranged on the cover plate 42, but can also be arranged at other positions outside the air flow channel 461.

[0166] Further preferably, the outer wall of the drawer 40 is provided with a mounting groove 420 having a detection opening 422 communicating with the interior of the drawer 40. The temperature sensor is fixedly mounted in the mounting groove 420, and the detection end thereof is located at the detection opening 422; thus, the temperature sensor can be mounted outside the drawer 40 and detect the temperature in the interior of the drawer 40, with high sensitivity.

[0167] To further improve the sensitivity and accuracy, the outer wall of the drawer 40 is further provided with a surrounding plate 423. The surrounding plate 423 surrounds the mounting groove 420, and the surrounding plate 423 extends from the outer wall of the drawer 40 to the inner wall of the fresh-keeping cylinder 30. In this way, even if a small amount of cold air in the air flow channel 46 flows out, for example, flows from the second flow guide 4632 to the right side towards the temperature sensor, under the blockage of the surrounding plate 423, this portion of cold air does not excessively contact the temperature sensor, thereby avoiding the temperature sensing being too low due to direct blowing of cold air.

[0168] The surrounding plate 423 protrudes from the outer surface of the second fresh-keeping container compared to the plurality of flow guides, that is, the protruding height of the surrounding plate 423 from the outer surface of the second fresh-keeping container is greater than the protruding height of the plurality of flow guides from the outer surface of the second fresh-keeping container.

[0169] Specifically, the upper edge of the surrounding plate 423 is higher than the upper edge of the plurality of guide ribs, which can almost contact the inner wall of the preservation cylinder 30 or have a slight gap with the inner wall of the preservation cylinder 30, thereby blocking the cold air from contacting the temperature sensor as much as possible.

[0170] Next, the drawer 40 is provided with a window, which is in communication with the inside of the drawer 40 and the guide air duct 461; the window is sealed and covered with the gas-resistant and moisture-permeable film 43, which is configured to allow water vapor to unidirectionally permeate out of the inside of the drawer 40. In this way, the water vapor in the drawer 40 can enter the guide air duct 461 through the gas-resistant and moisture-permeable film 43, thereby avoiding excessive humidity in the drawer 40 to cause condensation; at the same time, the air flow rate on the surface of the gas-resistant and moisture-permeable film 43 can also be accelerated by the cold air in the guide air duct 461, thereby promoting the permeation of water vapor in the drawer 40.

[0171] In an embodiment, the window is specifically provided on the cover plate 42, and more specifically, between the first flat section 4631b and the second flat section 4632b; of course, the utility model is not limited thereto, and the window can also be specifically provided at other positions of the drawer 40, such as the front wall of the box body 41.

[0172] Further, as described above, the gas-resistant and moisture-permeable film 43 is configured to allow water vapor to unidirectionally permeate out of the inside of the drawer 40, so as to avoid excessive humidity in the drawer 40, for example, the humidity in the drawer 40 is not more than 85%; and in a variant embodiment, the gas-resistant and moisture-permeable film 43 is configured to allow water vapor to unidirectionally enter the inside of the drawer 40, so as to maintain the humidity in the drawer 40 above a certain lower limit value, which can meet different use requirements of different humidity in the inside of the drawer 40.

[0173] At the same time, the gas-resistant and moisture-permeable film 43 can block gas from passing through, for example, the inside and outside of the drawer 40 cannot exchange gas through the gas-resistant and moisture-permeable film 43.

[0174] The drawer 40 is also provided with a grid plate 44; the gas-resistant and moisture-permeable film 43 is clamped and fixed by the grid plate 44 and the cover plate 42.

[0175] The grid plate 44 is provided with a hook around the periphery, which can be buckled in the card groove around the window of the cover plate 42, so as to achieve the fixed installation of the grid plate 44 and the cover plate 42.

[0176] Further, a humidity sensor can be arranged in the drawer 40, which is used to sense the humidity value in the inside of the drawer 40; the controller of the refrigeration appliance 100 controls the operation of the cold air supply fan according to the humidity value, including controlling the start, stop and speed of the cold air supply fan.

[0177] For example, when the humidity sensor detects that the humidity value reaches or exceeds the humidity threshold A1, the controller controls the cooling fan to start from the stopped state to supply cool air into the drawer 40, thereby using the cool air to accelerate the moisture permeability of the air-barrier and moisture-permeable membrane 43.

[0178] For example, when the humidity sensor detects that the humidity value is within a first humidity range A2 to A3 (A2 ≥ A1), the controller controls the cooling fan to operate at a first speed. When the humidity sensor detects that the humidity value is within a second humidity range A4 to A5 (A4 ≥ A3), the controller controls the cooling fan to operate at a second speed, which is greater than the first speed. That is, when the humidity value exceeds a humidity threshold, the higher the humidity value, the higher the speed of the cooling fan, thereby maintaining the stability of the humidity value.

[0179] In this application, the specific structure and material of the gas barrier and moisture-permeable membrane of the food preservation container 500B and the gas barrier and moisture-permeable membrane 43 of the drawer 40 may be the same or different, and will be implemented with the technology known in the art, without further details.

[0180] As can be seen from the above, the difference between the food preservation container 500B and the second food preservation container is that the food preservation container 500B is roughly formed by the food preservation cylinder 30B and the door panel 50B, and its outer wall is provided with a guide air duct 461B to guide the cold air in the compartment 101; while the second food preservation container is roughly defined by the drawer 40, and its outer wall is provided with a guide air duct 461 to guide the cold air in the compartment 103 formed by the food preservation cylinder 30. However, regardless of the structure, both involve providing a guide air duct on the outer wall of the sealed food preservation container to improve the cooling effect.

[0181] In one embodiment, the refrigeration appliance 100 also has a partition frame 14, which is fixedly assembled on the inner liner 12 to separate an installation cavity in the compartment 101 enclosed by the inner liner 12. The preservation cylinder 30, the heat preservation component 31, and the preservation cylinder 30B are all fixedly assembled in the installation cavity, specifically the preservation cylinder 30 and the preservation cylinder 30B are arranged side by side.

[0182] In addition, to improve aesthetics, the cover plate 15 also covers the insulation component 31 and the food storage container 30 and is fixedly assembled with the divider 14, thereby increasing the aesthetics. The cover plate 15 can also be used to place items to form a shelf.

[0183] Furthermore, participants Figures 11 to 13 The refrigeration appliance 100 has a modified atmosphere preservation function, which means it can preserve food by using a preservation atmosphere with a gas composition or gas volume percentage that is different from that of air.

[0184] Specifically, the refrigeration appliance 100 further comprises a gas regulating unit 60, and a first gas regulating channel 70.

[0185] The gas regulating unit 60 is configured to form a fresh-keeping atmosphere, and is preferably arranged outside the fresh-keeping cylinder 30 and outside the fresh-keeping container 500B.

[0186] Optionally, in an embodiment, the gas regulating unit 60 can be arranged inside the inner container 12 (for example, in the refrigeration chamber 101), or between the inner container 12 and the cabinet shell 11, or outside the cabinet shell 11, or in the mechanical chamber; of course, these changes in position are feasible within the spirit of the present application.

[0187] The first gas regulating channel 70 communicates the gas regulating unit 60 and the interior of the drawer 40, so that the fresh-keeping atmosphere formed by the gas regulating unit 60 enters the interior of the drawer 40.

[0188] In an embodiment of the present application, the temperature sensor is arranged on the cover plate 42, and the gas regulating inlet 424 is arranged on the cover plate 42. Figure 6 And Figure 9 The drawer 40 further has a gas regulating inlet 424 which communicates the interior and the exterior of the drawer 40, and the gas regulating channel 70 communicates to the interior of the drawer 40 via the gas regulating inlet 424; the baffle 423 further surrounds the gas regulating inlet 424. In this way, the fresh-keeping atmosphere with a relatively high temperature enters the interior of the drawer 40 at the gas regulating inlet 424, so that the position near the gas regulating inlet 424 constitutes the position with the highest temperature in the interior of the drawer 40, and the temperature sensor is arranged adjacent to the gas regulating inlet 424, so as to timely detect the high temperature in the drawer 40, and facilitate temperature control in combination with the entering of the fresh-keeping atmosphere.

[0189] As described above, the temperature sensor is arranged on the cover plate 42, and correspondingly, the gas regulating inlet 424 is arranged on the cover plate 42, so as to facilitate the arrangement of the gas regulating channel 70; for example, if the gas regulating inlet 424 is arranged on the box body 41, the connection of the gas regulating channel 70 and the gas regulating inlet 424 will be difficult due to the front and back movement of the box body 41, but in the embodiment of the present application, the gas regulating inlet 424 is arranged on the cover plate 42, so that the gas regulating channel 70 can be conveniently installed and docked.

[0190] Specifically, the gas regulating channel 70 comprises a pipe joint 33 which is fixedly arranged on the fresh-keeping cylinder 30, for example, can be integrally arranged with the fresh-keeping cylinder 30, and the first end of the pipe joint 33 is exposed to the outer wall of the fresh-keeping cylinder 30, and the second end is in upper and lower plug-in cooperation with the gas regulating inlet 424.

[0191] The gas regulating channel 70 can further comprise a gas pipe, one end of the gas pipe communicates with the gas regulating unit 60, and the other end is docked at the first end of the pipe joint 33.

[0192] Further, corresponding to the preservation container 500B, the refrigerating appliance 100 further has a second gas regulating passage 70B which communicates the gas regulating unit 60 and the interior of the preservation cylinder 30B, so that the preservation atmosphere formed by the gas regulating unit 60 enters the interior of the preservation cylinder 30B.

[0193] Referring to Figure 6 , the preservation cylinder 30B further has a gas regulating inlet 424B, and the gas regulating passage 70B communicates to the interior of the preservation cylinder 30B via the gas regulating inlet 424B.

[0194] The gas regulating inlet 424B is located at the upper left corner of the rear wall of the preservation cylinder 30B, close to the position of the second temperature sensor, so that the preservation atmosphere with higher temperature enters the interior of the preservation cylinder 30B at the gas regulating inlet 424B, so that the position near the gas regulating inlet 424B constitutes the position with the highest temperature in the interior of the preservation cylinder 30B, and the second temperature sensor is arranged adjacent to the gas regulating inlet 424B, so as to timely detect the high temperature in the preservation cylinder 30B, and facilitate the temperature control in combination with the entering of the preservation atmosphere.

[0195] The preservation atmospheres flowing in the first gas regulating passage 70 and the second gas regulating passage 70B can be the same or different.

[0196] For example, the gas regulating unit 60 is used to consume oxygen in the air to form an oxygen-poor preservation atmosphere, and / or is used to generate oxygen to form an oxygen-rich preservation atmosphere; the preservation atmospheres flowing in the first gas regulating passage 70 and the second gas regulating passage 70B can all be oxygen-poor preservation atmospheres, or all be oxygen-rich preservation atmospheres, or one is an oxygen-poor preservation atmosphere and the other is an oxygen-rich preservation atmosphere.

[0197] It can be understood that the oxygen-poor preservation atmosphere refers to a preservation atmosphere with a volume percentage of oxygen less than that in the air; and the oxygen-rich preservation atmosphere refers to a preservation atmosphere with a volume percentage of oxygen higher than that in the air.

[0198] The gas regulating unit 60 can specifically form the preservation atmosphere by means of air physical separation, photocatalyst, chemical reaction, electrochemical reaction, etc. For example, the gas regulating unit 60 can be arranged as an electrolytic gas regulating unit which forms the preservation atmosphere by electrochemical reaction.

[0199] Referring to Figures 11 to 13 , the gas regulating unit 60 includes at least one anode 61 and at least one cathode 62, the anode 61 is controllably connected to the positive pole of a power supply, and the cathode 62 is controllably connected to the negative pole of the power supply.

[0200] In this way, when the controller controls the operation of the gas regulating unit 60, under the control of the controller, the positive pole of the power supply is connected to the anode 61, the negative pole of the power supply is connected to the cathode 62, that is, the power supply supplies power to the gas regulating unit 60; and when the controller controls the gas regulating unit 60 to stop, under the control of the controller, the positive pole of the power supply is disconnected from the anode 61, and the negative pole of the power supply is disconnected from the cathode 62, that is, the power supply stops supplying power to the gas regulating unit 60.

[0201] Further, the gas regulating unit 60 further comprises an inner cavity capable of containing electrolyte.

[0202] The first side of the cathode 62 is exposed to the inner cavity, and the second side is exposed to the external air of the gas regulating unit 60.

[0203] When the gas regulating unit 60 is operating, that is, in the case of power supply, the cathode 62 is used to consume oxygen in the external air of the gas regulating unit 60 through an electrochemical reaction, specifically, the oxygen is reduced at the cathode 62, and the reaction formula is O2+2H2O+4e - →4OH - In this way, an oxygen-poor fresh-keeping atmosphere can be formed outside the gas regulating unit 60.

[0204] One side or both sides of the anode 61 are exposed to the inner cavity, and the anode 61 is used to generate oxygen in the inner cavity through an electrochemical reaction to form an oxygen-rich fresh-keeping atmosphere, specifically, OH - in the electrolyte can be oxidized at the anode 61 to generate oxygen, and the reaction formula is 4OH - →O2+2H2O+4e - The generated oxygen is collected to form an oxygen-rich fresh-keeping atmosphere.

[0205] Either one or both of the first gas regulating channel 70 and the second gas regulating channel 70B can be directly or indirectly connected to the oxygen outlet 63 of the gas regulating unit 60 to supply the oxygen-rich fresh-keeping atmosphere into the corresponding second fresh-keeping container or the fresh-keeping container 500B; or either one or both of the first gas regulating channel 70 and the second gas regulating channel 70B can supply the oxygen-poor fresh-keeping atmosphere outside the gas regulating unit 60 into the corresponding second fresh-keeping container or the fresh-keeping container 500B.

[0206] In an embodiment, the first gas regulating channel 70 is connected to the oxygen outlet 63 of the gas regulating unit 60 and is used to receive the oxygen-rich fresh-keeping atmosphere from the gas regulating unit 60 to realize the function of oxygen-rich fresh-keeping through the drawer 40;

[0207] Meanwhile, one end of the second gas regulating channel 70B is in communication with the interior of the preservation cylinder 30B (for example, to the gas regulating outlet 46B of the preservation cylinder 30B), and the other end is also in communication with the interior of the preservation cylinder 30B (for example, to the gas regulating inlet 424B of the preservation cylinder 30B), and the second side of the cathode 62 is exposed in the second gas regulating channel 70B, whereby the gas in the preservation cylinder 30B flows to the second side of the cathode 62 through a section of the second gas regulating channel 70B, the oxygen therein is consumed by the electrochemical reaction of the cathode 62 to form an oxygen-poor preservation atmosphere, and then returns to the interior of the preservation cylinder 30B through another section of the second gas regulating channel 70B, so as to circulate, so that the oxygen-poor environment in the preservation cylinder 30B eventually reaches the oxygen target concentration.

[0208] As for the composition of the electrolyte used in the gas regulating unit 60, the specific structure / material of the cathode 62 and the anode 61, it is common knowledge in the electrolysis technical field, for example: the electrolyte can be low-concentration sodium hydroxide or potassium hydroxide electrolytic water, of course, it can also be other alkaline solutions or acidic solutions, neutral solutions; the cathode 62 can be a composite structure combined by an electrically conductive layer, a catalytic layer, a waterproof and breathable layer or more other functional layers by extrusion, hot processing and other means; the anode 61 can also be an electrically conductive layer or an inert electrode. Of course, it is not limited to this, as long as the combination of the electrolyte, the anode 61 and the cathode 62 can realize the electrochemical reaction to prepare the preservation atmosphere, it can be applied to the construction of the gas regulating unit 60 of the utility model.

[0209] In addition, the gas regulating unit 60 further comprises an electrolysis box 600, and the electrolysis box 600 is provided with at least one window.

[0210] The cathode 62 is sealed and covers the window and is fixedly connected with the electrolysis box 600 in a sealed manner, and the first side of the cathode 62 faces the interior of the electrolysis box 600, so as to be in contact with the electrolyte in the electrolysis box 600; and the second side of the cathode 62 is exposed outside the gas regulating unit 60 from the window, so as to be in contact with the gas outside the gas regulating unit 60.

[0211] In the figure, the electrolysis box 600 comprises two oppositely arranged windows, and the number of the cathodes 62 is two, and one cathode 62 is arranged at each window; correspondingly, the anode 61 is located in the interior of the electrolysis box 600 and between the two cathodes 62, and the anode 61 is parallel to and opposite to the two cathodes 62, so that the two cathodes 62 share the same anode 61. In this way, the electrochemical reaction efficiency of the gas regulating unit 60 can be improved.

[0212] Further, the refrigerating appliance 100 further comprises two oxygen concentration sensors, one of which is arranged inside the drawer 40 and the other of which is arranged inside the crisper 30B, for detecting the oxygen concentration and for the controller of the refrigerating appliance 100 to control the operation of the air conditioning unit 60 in accordance with the oxygen concentration.

[0213] In summary, the beneficial effects of the embodiment of the present application are that the flow guide ribs are arranged outside the preservation container, so that the cold air can flow along the outer surface of the preservation container, which not only can realize rapid cooling of the preservation container, but also can ensure cooling uniformity, avoid local high temperature in the preservation container, and will not affect the environment in the preservation container, and avoid drastic fluctuations in the preservation environment.

[0214] It should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0215] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A refrigeration appliance characterized in that, The refrigerator comprises: a cabinet provided with a chamber and a refrigeration compartment, wherein a refrigeration device is installed in the refrigeration compartment; a preservation container provided in the chamber, wherein a plurality of guide ribs are arranged on the outer surface of the preservation container, and a guide air duct is formed between the guide ribs; a cold air supply channel connecting the refrigeration compartment and the chamber, wherein an air inlet corresponding to the guide air duct is arranged on the cold air supply channel; cold air in the refrigeration compartment flows into the chamber through the air inlet, flows outside the preservation container, and flows along the guide air duct on the outer surface of the preservation container.

2. The refrigeration appliance of claim 1, wherein, The cabinet comprises an inner container; the refrigeration device comprises a door plate and a preservation cylinder assembled in the inner container, wherein the preservation cylinder encloses the chamber with an open front, and the door plate is movably arranged at the open front and used for opening and closing the chamber; the preservation container comprises a drawer movably accommodated in the preservation cylinder, wherein the drawer comprises a box body with a taking opening, and a cover plate used for opening and closing the taking opening, and the box body and the door plate are fixedly connected; the plurality of guide ribs are arranged on the outer surface of the drawer.

3. The refrigeration appliance of claim 2, wherein, the air inlet is arranged on the upper portion of the rear wall of the preservation cylinder and is higher than the cover plate; the plurality of guide ribs comprise first guide ribs and second guide ribs arranged on the cover plate, and the first guide ribs and the second guide ribs are arranged opposite to each other; the guide air duct is formed between the first guide ribs and the second guide ribs, and the guide air duct is opposite to the air inlet to guide the cold air to flow forward along the cover plate.

4. The refrigeration appliance of claim 2, wherein, one of the cover plate and the box body is provided with a protruding column on the left and right sides thereof, and the other is provided with a limiting hook; the protruding column is inserted into the limiting hook to limit the forward and backward movement of the cover plate along with the box body, and when the box body is pulled out forward from the preservation cylinder, the cover plate is hung in the preservation cylinder under the cooperation of the protruding column and the limiting hook.

5. The refrigeration appliance of claim 4, wherein, the refrigeration device further comprises a gas regulating unit and a gas regulating channel, wherein the gas regulating channel is used for delivering a preservation atmosphere from the gas regulating unit to the inside of the drawer; the cover plate is provided with a gas regulating inlet, and the gas regulating channel is connected to the inside of the drawer through the gas regulating inlet.

6. The refrigeration appliance of claim 1, wherein, the cabinet comprises an inner container enclosing the chamber; the preservation container comprises a preservation cylinder assembled in the inner container and a door plate sealingly closing the preservation cylinder, and the plurality of guide ribs are arranged on the outer surface of the preservation cylinder.

7. The refrigeration appliance of claim 6, wherein, the refrigeration device further comprises a duct cover plate assembled at the rear wall of the inner container and a shielding plate located above the preservation cylinder; the air inlet is arranged on the duct cover plate and is higher than the top wall of the preservation cylinder and lower than the shielding plate; the plurality of guide ribs comprise first guide ribs and second guide ribs arranged on the top wall of the preservation cylinder, and the first guide ribs and the second guide ribs are arranged opposite to each other; the guide air duct is formed between the first guide ribs and the second guide ribs, and the guide air duct is opposite to the air inlet to guide the cold air to flow forward along the preservation cylinder.

8. The refrigeration appliance of claim 3 or 7, wherein, the rear ends of the first guide ribs and the second guide ribs are respectively located outside the air inlet in the left and right directions. The air guide duct comprises a relatively rear expansion section and a relatively front equal-width section, the expansion section gradually increases in left and right width from front to back, and the equal-width section keeps constant in left and right width from front to back.

9. The refrigeration appliance of claim 8, wherein, The fresh-keeping container is further provided with a window, which is in communication with the interior of the fresh-keeping container and the chamber, and is exposed to the air guide duct; The window is sealed with a gas barrier and moisture permeable film, which is configured to allow water vapor to enter or exit the interior of the fresh-keeping container in one direction.

10. The refrigeration appliance of claim 9, wherein, The refrigeration appliance further comprises: a gas regulating unit arranged outside the fresh-keeping container and used to form a fresh-keeping atmosphere; a gas regulating channel in communication with the gas regulating unit and the interior of the fresh-keeping container, so as to allow the fresh-keeping atmosphere to enter the interior of the fresh-keeping container.

11. The refrigeration appliance of claim 10, wherein, The gas regulating unit is an electrolytic gas regulating unit configured to form the fresh-keeping atmosphere through an electrochemical reaction, and comprises an anode, a cathode, and an inner cavity capable of containing electrolyte; One side of the cathode is exposed to the inner cavity, and the other side is exposed to the gas regulating channel, and the cathode is used to consume oxygen in the gas regulating channel through an electrochemical reaction so that the formed fresh-keeping atmosphere is in an oxygen-poor state; Alternatively, one side or both sides of the anode are exposed to the inner cavity, and the gas regulating channel is in communication with the inner cavity, and the anode is used to generate oxygen in the inner cavity through an electrochemical reaction so that the formed fresh-keeping atmosphere is in an oxygen-rich state.

12. The refrigeration appliance of claim 8, wherein, The plurality of air guide ribs further comprise a plurality of third air guide ribs arranged between the first air guide rib and the second air guide rib; The third air guide rib divides the expansion section into at least two sub-air ducts arranged side by side.

13. The refrigeration appliance of claim 8, wherein, At the expansion section of the air guide duct, at least part of the first air guide rib and / or the second air guide rib is arranged to extend obliquely at an angle of 30°-60° with respect to the front-rear direction.

14. The refrigeration appliance of claim 8, wherein, The first air guide rib and / or the second air guide rib are arranged to extend continuously from the rear end to the front end; Alternatively, At the equal-width section of the air guide duct, the first air guide rib and / or the second air guide rib are provided with a plurality of openings and extend intermittently, and the openings allow cold air to be diverted to the left and / or right side of the fresh-keeping container.

15. The refrigeration appliance of claim 10, wherein, The refrigeration appliance comprises a temperature sensor mounted on the fresh-keeping container and located outside the air guide duct.

16. The refrigeration appliance of claim 15, wherein, The fresh-keeping container has a gas regulating inlet, and the gas regulating channel is connected to the interior of the fresh-keeping container through the gas regulating inlet; The gas regulating inlet and the temperature sensor are arranged adjacent to each other; The fresh-keeping container further has a surrounding plate surrounding the gas regulating inlet and the temperature sensor and protruding from the outer surface of the fresh-keeping container compared to the air guide rib.

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