CN110953802B

CN110953802B - A kind of refrigerator

Info

Publication number: CN110953802B
Application number: CN201911252709.XA
Authority: CN
Inventors: 董浩; 杨大海; 鞠晓晨; 王海燕
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-15
Anticipated expiration: 2039-12-09
Also published as: CN110953802A

Abstract

The invention discloses a refrigerator and relates to the technical field of refrigeration. The heating and the refrigeration can be realized simultaneously, the heating efficiency can be improved, and the energy consumption of the refrigerator is reduced. The refrigerator comprises a refrigerating chamber, a freezing chamber and a temperature-changing chamber, wherein the temperature-changing chamber is divided into a first sub temperature-changing chamber and a second sub temperature-changing chamber; the first sub temperature-changing chamber can realize a refrigeration function; the second sub temperature-changing chamber comprises a heating assembly, a heat exchange plate and a heating circulating air duct assembly, and the heating assembly is used for heating food materials placed in the second sub temperature-changing chamber; the heat exchange plate is arranged above the heating assembly, a heat exchange channel is formed between the heat exchange plate and the heating assembly, and a storage cavity is formed between the heat exchange plate and the top wall of the second sub-temperature-changing chamber; the heating circulation air channel assembly is used for enabling air in the second sub-variable temperature chamber to circulate, and the storage cavity is sequentially communicated with the heat exchange channel and the heating circulation air channel assembly.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of refrigeration, in particular to a refrigerator.

Background

With the development of society, the requirements of people on the quality of life are higher and higher. Therefore, the demand for diversification and individuation of the storage of things in the home life is becoming stronger, and a refrigerator with a temperature-variable chamber is produced. The temperature in the temperature changing chamber of the refrigerator can be independently adjusted, so that the refrigerator not only has a refrigeration function, but also has the functions of heat preservation, heating and the like, and can meet the requirement of a user on storing various articles. As shown in fig. 1, in a conventional refrigerator having a temperature-variable chamber, a heater 01 is often directly attached to an inner wall of an inner container 02 of the temperature-variable chamber to heat the refrigerator. The disadvantages of this structure are: firstly, after the heater 01 is started, the whole temperature-changing chamber starts to heat, so that the heating function and the refrigerating function cannot be realized at the same time; secondly, because the air in the temperature changing chamber circulates slowly, the heating efficiency is low, and the energy consumption of the refrigerator is high.

Disclosure of Invention

The embodiment of the invention provides a refrigerator, which can realize heating and refrigerating at the same time, improve heating efficiency and reduce energy consumption of the refrigerator.

To achieve the above object, an embodiment of the present invention provides a refrigerator including: the refrigerator comprises a refrigerating chamber and a freezing chamber, wherein the set temperature of the freezing chamber is lower than that of the refrigerating chamber; the temperature-variable chamber is independent of the refrigerating chamber and the freezing chamber and is divided into a first sub temperature-variable chamber and a second sub temperature-variable chamber; the first sub temperature-changing chamber can realize a refrigeration function; the second sub-temperature-changing chamber comprises: the heating assembly is arranged in the second sub temperature changing chamber and used for heating food materials placed in the second sub temperature changing chamber; the heat exchange plate is arranged above the heating assembly, a heat exchange channel is formed between the heat exchange plate and the heating assembly, and the heat exchange channel is provided with a heat exchange channel air inlet and a heat exchange channel air outlet; a storage cavity is formed between the heat exchange plate and the top wall of the second sub-temperature-changing chamber; and the heating circulating air duct assembly is used for circulating the air in the second sub-variable temperature chamber, and is provided with a heating air duct air inlet and a heating air duct air outlet, wherein the heat exchange channel air inlet is communicated with the storage cavity, the heating air duct air inlet is communicated with the heat exchange channel air outlet, and the heating air duct air outlet is communicated with the storage cavity.

According to the refrigerator provided by the embodiment of the invention, the temperature change chamber is divided into a first sub temperature change chamber and a second sub temperature change chamber; the first sub temperature-changing chamber can realize a refrigeration function; set up heating element in the sub-temperature changing room of second, heat transfer board and heating circulation wind channel subassembly, the heat transfer board is located heating element's top, form heat transfer passageway between heat transfer board and the heating element, because the density of hot-air is little can rise, therefore most heat that heating element produced can be with the cold air heat transfer in heat transfer passageway, the air after the heat absorption is inhaled in the heating circulation wind channel subassembly by heating circulation wind channel subassembly, get into the storing intracavity that forms between the roof of heat transfer board and the sub-temperature changing room of second through heating wind channel air outlet again, eat the heat transfer with eating the material, the air after the heat dissipation is inhaled the heat transfer passageway once more and is formed the circulation. Therefore, the first sub temperature-changing chamber can realize the refrigerating function, the second sub temperature-changing chamber can realize the heating function, and the first sub temperature-changing chamber and the second sub temperature-changing chamber are separated from each other, so that the temperature-changing chambers can realize the refrigerating function and the heating function at the same time; because a heat exchange channel is formed between the heat exchange plate and the upper part of the heating assembly, most of heat generated by the heating assembly enters the heat exchange channel, and the gas in the second sub-temperature changing chamber forms circulation through the heating circulation air channel assembly, so that the flowing speed of the gas is accelerated, heat loss is reduced, the heating efficiency is improved, and the energy consumption of the refrigerator is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the position of a heater and the inner container of a temperature-varying chamber in a prior art refrigerator;

FIG. 2 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a temperature varying chamber in a refrigerator according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

FIG. 6 is an exploded view of the refrigerator with a temperature varying chamber according to the embodiment of the present invention;

FIG. 7 is a schematic perspective view of a drawer, a heat exchange plate, a drawer base and a rail assembly of a refrigerator according to an embodiment of the present invention;

FIG. 8 is a schematic plan view of a drawer, heat exchange plates, a drawer base and a rail assembly of a refrigerator according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view C-C of FIG. 8;

FIG. 10 is a schematic view illustrating the connection of a drawer, a heat exchange plate and a heat conductive member in the refrigerator according to the embodiment of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 at I;

FIG. 12 is a schematic perspective view of a drawer in a refrigerator according to an embodiment of the present invention;

FIG. 13 is a schematic perspective view of a drawer base and a heating layer of a refrigerator according to an embodiment of the present invention;

FIG. 14 is an exploded view of a heating layer of a refrigerator according to an embodiment of the present invention;

FIG. 15 is a schematic perspective view of a drawer base of a refrigerator according to an embodiment of the present invention;

FIG. 16 is an exploded view of a heating cycle air duct assembly of the refrigerator according to an embodiment of the present invention;

fig. 17 is an exploded view of a first circulating air duct assembly and a first circulating air duct assembly in the refrigerator according to the embodiment of the present invention;

FIG. 18 is a schematic view showing the flow of air during heating in the second sub-temperature changing chamber of the refrigerator according to the embodiment of the present invention;

fig. 19 is a schematic view showing the flow of air during the cooling operation of the second sub-temperature-varying chamber in the refrigerator according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 2, the refrigerator of the present embodiment has an approximately rectangular parallelepiped shape, and an external appearance of the refrigerator is defined by a storage compartment defining a storage space and a plurality of door bodies provided in the storage compartment, wherein the door bodies include a door body outer shell located outside the storage compartment, a door body inner container located inside the storage compartment, an upper end cover, a lower end cover, and a heat insulating layer located between the door body outer shell, the door body inner container, the upper end cover, and the lower end cover, and typically, the heat insulating layer is filled with a foaming material, the storage compartment is a box body having an opening, and includes a refrigerating compartment 1, a freezing compartment 2, and a temperature change compartment 3, a set temperature of the freezing compartment 2 is lower than a set temperature of the refrigerating.

Referring to fig. 3, 4 and 6, the temperature-varying chamber 3 is divided into a first sub temperature-varying chamber 4 and a second sub temperature-varying chamber 5 by a partition plate 6, the first sub temperature-varying chamber 4 can realize a refrigeration function, a heating assembly 52, a heat exchange plate 57 and a heating circulation air duct assembly 53 are arranged in the second sub temperature-varying chamber 5, and the heating assembly 52 is used for heating food materials placed in the second sub temperature-varying chamber 5; the heat exchange plate 57 is arranged above the heating assembly 52, a heat exchange channel 58 is formed between the heat exchange plate 57 and the heating assembly 52, the storage cavity 10 is formed between the heat exchange plate 57 and the top wall of the second sub-temperature-changing chamber 5, and the heat exchange channel 58 is provided with a heat exchange channel air inlet 571 and a heat exchange channel air outlet 512; the heating circulation air duct assembly 53 is located inside the second sub temperature-changing chamber 5 and is used for circulating air in the second sub temperature-changing chamber 5, and the heating circulation air duct assembly 53 is provided with a heating air duct air inlet 535 and a heating air duct air outlet 536, wherein the heat exchange channel air inlet 571 is communicated with the storage cavity 10, the heating air duct air inlet 535 is communicated with the heat exchange channel air outlet 512, and the heating air duct air outlet 536 is communicated with the storage cavity 10.

According to the refrigerator provided by the embodiment of the invention, the first sub temperature-changing chamber 4 can realize a refrigeration function. Referring to fig. 4 and 18, a heat exchange channel 58 is formed in the second sub-temperature changing chamber 5, and since the density of hot air is low, the hot air rises, most of heat generated by the heating assembly 52 can exchange heat with cold air in the heat exchange channel 58, the heat-absorbed air enters the heating circulation air channel 537, enters the storage cavity 10 through the heating air channel air outlet 536 to exchange heat with food materials, and the heat-exchanged air is sucked into the heat exchange channel 58 again to form circulation.

The heat exchange channel air inlet 571 can be arranged at a plurality of positions, for example, the heat exchange channel air inlet 571 can be arranged between the heat exchange plate 57 and the side wall of the second sub temperature changing chamber 5; as another example, referring to fig. 4, the heat exchange channel air inlet 571 may be located on the heat exchange plate 57. When the heat exchange channel air inlet 571 is arranged between the heat exchange plate 57 and the side wall of the second sub temperature changing chamber 5, the gas needs to bypass the heat exchange plate 57 and enter the heat exchange channel 58 from between the heat exchange plate 57 and the side wall of the second sub temperature changing chamber 5, the heat exchange stroke is long, and heat waste can be caused, but when the heat exchange channel air inlet 571 is positioned on the heat exchange plate 57, the gas can directly pass through the heat exchange plate 57 and enter the heat exchange channel 58, the heat exchange stroke is short, and heat loss is reduced, so that the heat exchange channel air inlet 571 is preferably positioned on the heat exchange plate 57.

The heat exchange plate 57 has various installation forms, and as an example, the heat exchange plate 57 can be directly connected with the second sub temperature changing chamber 5; as another example, referring to fig. 4, a drawer 51 may be disposed above the heating assembly 52, and the heat exchange plate 57 is located in the drawer 51, and the drawer 51 can be inserted into or withdrawn from the second sub-temperature changing chamber 5. Because the food material needs to be placed on the heat exchange plate 57, if the heat exchange plate 57 is directly connected with the second sub temperature-varying chamber 5, a user needs to stretch a hand into the second sub temperature-varying chamber 5 when taking and placing the food material, the operation is inconvenient, if the heat exchange plate 57 is located in the drawer 51, the drawer 51 can be inserted into or drawn out of the second sub temperature-varying chamber 5, and the drawer 51 can be pulled out when taking and placing the food material, so that the operation is more convenient.

Referring to fig. 4 and 12, a heat exchange channel 58 is defined by the side wall of the drawer 51, the upper side of the heating assembly 52 and the lower side of the heat exchange plate 57, an air outlet 512 and a gap 514 of the heat exchange channel are formed on the side wall of the drawer 51, and the gap 514 is communicated with the storage cavity 10.

Referring to fig. 7, 8, 9 and 13, the heating assembly 52 may include a heating layer 522 for heating food materials, the heating layer 522 has various mounting forms that can be realized, for example, the heating layer 522 may be mounted in the second sub-temperature-varying chamber 5 by a bracket fixed in the second sub-temperature-varying chamber 5, and this structure has a disadvantage that when the drawer 51 is drawn out of the second sub-temperature-varying chamber 5, gas in the heat exchange channel 58 not only flows to the outside of the refrigerator from the heat exchange channel air inlet 571 on the heat exchange plate 57, but also gushes out from between the drawer 51 and the inlet of the second sub-temperature-varying chamber 5, and heat stored in the heat exchange channel 58 is more dissipated, resulting in heat waste; further, referring to fig. 13, the heating layer 522 may be installed in the second sub-temperature-varying chamber 5 through a drawer support 521, the drawer support 521 includes a drawer support sidewall and a drawer support bottom wall, the drawer support sidewall and the drawer support bottom wall enclose an accommodating cavity for accommodating the drawer 51, the heating layer 522 is located outside the bottom wall of the drawer support 521, the drawer support 521 can be inserted into or pulled out of the second sub-temperature-varying chamber 5, when picking and placing food materials, the drawer support 521 can drive the drawer 51 to extend out of the second sub-temperature-varying chamber 5 together, since the drawer 51 is located in the drawer support 521, and the heating layer 522 is located outside the bottom wall of the drawer support 521, the heat exchange channel 58 between the heat exchange plate 57 and the heating layer 522 in the drawer 51 is also located in the drawer support 521, the heat exchange channel 58 is only communicated with the outside of the refrigerator through an air inlet of the heat exchange channel, and is not directly communicated with the outside of the drawer, therefore, the gas in the heat exchange channel 58 can only flow from the heat exchange channel air inlet 571 on the heat exchange plate 57 to the outside of the refrigerator, and does not gush out from between the drawer 51 and the inlet of the second sub-temperature changing chamber 5, so that the heat loss can be reduced, and in summary, the heating layer 522 is preferably installed in the second sub-temperature changing chamber 5 through the drawer support base 521.

Referring to fig. 9 to 11, since the heating layer 522 is far away from the heat exchange plate 57 and the heat exchange passage air outlet 512, the heat conducting member 59 may be disposed in the drawer 51, the heat conducting member 59 contacts with the heating layer 522 and is disposed between the heating layer 522 and the heat exchange plate 57, and since the heat conducting member 59 is close to the heating layer 522, the heat generated by the heating layer 522 is guided to the heat exchange plate 57 and the heat exchange passage air outlet 512 by the heat conducting member 59, thereby improving the heat exchange efficiency.

The heating layer 522 is disposed outside the bottom wall surface of the drawer support 521, the heat conductor 59 is disposed outside the bottom wall surface of the drawer 51, an opening 529 is disposed at a position of the drawer support 521 corresponding to the heating layer 522, and the heat conductor 59 can pass through the opening 529 to contact the heating layer 522.

The heat-conducting member 59 has various mounting manners, for example, the heat-conducting member 59 may be bonded or welded to the outside of the bottom wall surface of the drawer 51, and this structure has a disadvantage of being not detachable; the heat conducting member 59 can also be connected to the bottom wall surface of the drawer 51 by a fastener, and the structure has the disadvantage that the fastener needs to be removed when the drawer is disassembled, so that the disassembly is inconvenient; as another example, referring to fig. 11, a clamping groove 513 may be formed on the outer side of the bottom wall surface of the drawer 51, a flange 591 is formed at the upper end of the heat conducting member 59, the flange 591 is engaged with the clamping groove 513, and the heat conducting member 59 only needs to be pulled out when being detached, which is convenient to operate, so that the clamping groove 513 is preferably formed on the outer side of the bottom wall surface of the drawer 51, and the flange 591 is preferably formed at the upper end of the heat conducting member 59.

The heating layer 522 has various realizable structures, and as an example, the heating layer 522 may be heated using a heating tube; as another example, the heating layer 522 may be heated by a heating film. Because the heating pipe occupation space is big, and need fix during the installation, it is inconvenient to install, however, heating film occupation space is little and only need be attached during the installation can, so, the preferred heating film heating that adopts of zone of heating 522. Referring to fig. 14, the heating layer 522 may include a heat conducting plate 523, a first heating film 524, and a heat insulating plate 525 bonded in sequence from top to bottom, the heat conducting plate 523 may conduct heat generated by the first heating film 524 to the heat conducting plate 523, and the heat insulating plate 525 may insulate heat generated by the first heating film 524, so as to prevent heat from being dissipated from the bottom of the second sub-temperature-changing chamber 5, further improve heat exchange efficiency, and for better heat insulating effect, the heat insulating plate 525 may be made of ceramic.

Referring to fig. 15, a heating layer clamping groove 526 is formed in the bottom wall surface of the drawer supporting seat 521, and the heating layer 522 is clamped in the heating layer clamping groove 526 in a matching manner. Because the lower part of the drawer 51 is located in the drawer support 521, the side wall of the drawer support 521 is provided with an air outlet 528 corresponding to the air outlet 512 of the heat exchange channel.

Referring to fig. 6 and 7 and 13, the drawer support 521 is slidably connected to the second sub temperature changing chamber 5 through a rail assembly 55, the rail assembly 55 includes an inner rail 551 and an outer rail 552, and the inner rail 551 is disposed outside the side wall of the drawer support; the outer slide rail 552 is provided on the inner wall surface of the second sub temperature changing chamber 5, and the inner slide rail 551 is slidable within the outer slide rail 552. Accordingly, the drawer support 521 slides more smoothly.

Referring to fig. 6 and 15, a door plate 54 is disposed at the mouth of the second sub temperature changing chamber 5, the door plate 54 is in sealing fit with the second sub temperature changing chamber 5, a latch 527 is disposed on the lower side of the flange of the drawer supporting base 521, a slide rail slot 553 adapted to the latch 527 is disposed on the inner slide rail 551, one end of the inner slide rail 551 is connected to the door plate 54, and the other end of the inner slide rail 551 is connected to the slide rail slot 553. Therefore, during installation, the inner sliding rail 551 and the drawer supporting seat 521 can be fixed only by clamping the clamping block 527 and the sliding rail clamping groove 553, and the installation is more convenient.

Referring to fig. 4 and 16, the heating circulation air duct assembly 53 may include a heating air duct housing 531 and a heating air duct cover 532 that are fastened to each other, a heating circulation air duct 537 is formed therebetween, and a circulation fan 533 is disposed in the heating circulation air duct 537; the heating air duct cover plate 532 is clamped with the inner wall of the second sub-temperature-changing chamber 5, and a heating air duct air outlet 536 and a heating air duct air inlet 535 which are communicated with the heating circulating air duct 537 are arranged on the heating air duct cover plate 532. Thus, the circulation fan 533 can accelerate the entire circulation heat exchange process, thereby reducing heat loss.

Since the air outlet of the circulating fan 533 is aligned with the heating air duct outlet 536 or perpendicular to the heating air duct outlet 536, the air in the heating circulating air duct 537 may form vortex, and thus the air outlet of the circulating fan 533 may be obliquely aligned with the heating air duct outlet 536, for example, the circulating fan 533 may be installed in the heating air duct housing 531 by the installation plate 539 fixed in the heating air duct housing 531, and the installation plate 539 may be obliquely installed in order to align the air outlet of the circulating fan 533 with the heating air duct outlet 536. Because the air outlet of the circulating fan 533 is obliquely opposite to the air outlet 536 of the heating air duct, the air in the heating circulating air duct 537 directly enters the storage chamber 10 through the air outlet 536 of the heating air duct after passing through the circulating fan 533, the air flows more smoothly, and the heat exchange is faster.

Since the refrigerator may need to be heated quickly when in use, and the power of the first heating film 524 is generally a fixed value, the heating time is also a fixed value, and quick heating cannot be achieved, an auxiliary heating assembly for heating the food materials placed in the storage chamber 10 may be disposed inside the heating circulation air duct 537. Thus, the heating time can be shortened and rapid heating can be realized.

Referring to fig. 4, 12 and 18, the auxiliary air outlet 511 is disposed on the side wall of the drawer 51, the auxiliary air outlet 511 is located above the heat exchange plate 57, the auxiliary air outlet 511 is communicated with the air inlet 535 of the heating air duct, when the auxiliary heating element is turned on, a part of air in the second sub-temperature-changing chamber 5 can directly enter the heating circulation air duct 537 from the auxiliary air outlet 511 to heat the food material after heat exchange, and the heating efficiency is higher.

Referring to fig. 16, the auxiliary heating member has various realizable forms, and for example, the auxiliary heating member may be a heating film attached to an inner wall of the heating duct housing 531; as another example, the auxiliary heating unit may be a second heating film 534 disposed in the heating circulation duct 537. Therefore, when the second heating film 534 is attached to the inner wall of the heating air duct housing 531, the heat generated at the side of the second heating film 534 close to the inner wall of the heating air duct housing 531 is dissipated through the heating air duct housing 531, but when the second heating film 534 is disposed in the heating circulation air duct 537, the heat generated by the second heating film 534 is completely sent to the second sub-temperature-changing chamber 5 for heating the food material, thereby reducing the heat waste.

The second heating film 534 may be fixed in various manners, for example, the second heating film 534 may be attached to a mounting plate fixed in the heating air duct housing 531, and since the space in the heating air duct housing 531 is limited, it is inconvenient to replace the second heating film 534; as another example, referring to fig. 16, the second heating film 534 may be disposed in the heating duct housing 531 through a heating film support 7, the heating film support 7 may include a support plate 8 and a connection plate 9, the support plate 8 is used for attaching the second heating film 534, the connection plate 9 is fixedly connected to the support plate 8, two opposite sidewalls of the second sub temperature-changing chamber 5 are respectively provided with a heating film support mounting hole 538, the support plate 8 is erected on two opposite sidewalls of the second sub temperature-changing chamber 5, and the connection plate 9 is connected to an outer side of one of the sidewalls of the second sub temperature-changing chamber 5; with this structure, when replacing the second heating film 534, it is only necessary to remove the fastener and draw out the heating film support 7 from the heating film support mounting hole 538, so that the second heating film 534 can be replaced easily, and therefore, it is preferable that the second heating film 534 be disposed in the heating duct housing 531 through the heating film support 7.

Referring to fig. 17, in order to increase the circulation speed of the gas in the first sub-temperature changing chamber 4, the first refrigeration cycle duct assembly includes a first duct foam 41, a second duct foam 42, a first duct cover 43, and a first control damper 44; the first air duct foam 41 and the second air duct foam 42 are buckled with each other, and a first refrigeration cycle air duct is formed between the first air duct foam 41 and the second air duct foam 42; the first air duct cover plate 43 covers the outer sides of the first air duct foam 41 and the second air duct foam 42 and is clamped with the inner wall of the first sub-temperature-changing chamber 4, and a first refrigeration air duct air outlet 45 and a first refrigeration air duct air inlet 46 which are communicated with the first refrigeration circulating air duct are formed in the first air duct cover plate 43; the first control damper 44 is disposed in the first refrigeration cycle air duct for controlling the on-off of the freezing chamber and the first refrigeration cycle air duct, and therefore, since the first refrigeration cycle air duct is communicated with the refrigeration chamber, the fan in the refrigeration chamber can accelerate the circulation speed of the gas in the first sub-temperature-changing chamber 4.

Referring to fig. 5 and 17, in an actual use process, because the second sub temperature changing chamber 5 is sometimes required to realize a refrigeration function, the second sub temperature changing chamber 5 further includes a second refrigeration cycle air duct assembly, the second refrigeration cycle air duct assembly is disposed inside the second sub temperature changing chamber 5, and the second refrigeration cycle air duct assembly includes a third air duct foam 561, a fourth air duct foam 562, a second air duct cover 563, and a second control damper 567; the third air duct foam 561 and the fourth air duct foam 562 are buckled with each other, and a second refrigeration cycle air duct 566 is formed between the third air duct foam 561 and the fourth air duct foam 562; the second air duct cover plate 563 covers the outer sides of the third air duct foam 561 and the fourth air duct foam 562 and is clamped with the inner wall of the second sub-temperature-changing chamber 5, and a second refrigerating air duct air outlet 565 and a second refrigerating air duct air inlet 564 communicated with the second refrigerating circulation air duct 566 are formed in the second air duct cover plate 563; the second refrigerating air duct inlet 565 is communicated with the heat exchange channel outlet 512, and the second refrigerating air duct inlet 564 is communicated with the storage cavity 10; a second control damper 567 is disposed in the second cooling-cycle air passage 566, and is used for controlling the opening and closing of the freezing chamber and the second cooling-cycle air passage 566. Therefore, the second sub temperature changing chamber 5 can also realize a cooling function because the second cooling circulation duct 566 is communicated with the cooling chamber.

Referring to fig. 17 and 19, when the second sub-temperature changing chamber 5 is cooled, the control damper 567 is opened, the freezing chamber is communicated with the second cooling circulation air duct 566, the cold air enters the cooling circulation air duct 536, and then enters the storage chamber 10 through the cooling air duct air outlet 565 to exchange heat with the food material, a part of the air after heat exchange directly passes through the auxiliary air outlet 511 and then enters the second cooling circulation air duct 566 again through the second cooling air duct air inlet 564 to form circulation, and another part of the cold air enters the heat exchange channel 58 through the heat exchange channel air inlet 571 and then enters the second cooling circulation air duct 566 again through the second cooling air duct air inlet 564 to form circulation.

For ease of installation, first duct foam 41 and third duct foam 561 may be a single piece, second duct foam 42 and fourth duct foam 562 may be a single piece, and first duct cover 43 and second duct cover 563 may also be a single piece.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A refrigerator, comprising:

the refrigerator comprises a refrigerating chamber and a freezing chamber, wherein the set temperature of the freezing chamber is lower than that of the refrigerating chamber;

the temperature-varying chamber is independent from the refrigerating chamber and the freezing chamber, and is characterized in that the temperature-varying chamber is divided into a first sub temperature-varying chamber and a second sub temperature-varying chamber;

the first sub temperature-changing chamber can realize a refrigeration function;

the second sub-temperature-changing chamber comprises:

the heating assembly is arranged in the second sub temperature changing chamber and used for heating food materials placed in the second sub temperature changing chamber;

the heat exchange plate is arranged above the heating assembly, a heat exchange channel is formed between the heat exchange plate and the heating assembly, and the heat exchange channel is provided with a heat exchange channel air inlet and a heat exchange channel air outlet; a storage cavity is formed between the heat exchange plate and the top wall of the second sub-temperature-changing chamber;

the heating circulating air duct assembly is used for circulating the air in the second sub-variable temperature chamber; the heating circulating air duct assembly is provided with a heating air duct air inlet and a heating air duct air outlet;

the heat exchange channel air inlet is communicated with the storage cavity, the heating air channel air inlet is communicated with the heat exchange channel air outlet, and the heating air channel air outlet is communicated with the storage cavity.

2. The refrigerator of claim 1, wherein the heat exchange passage air inlet is located on the heat exchange plate.

3. The refrigerator of claim 2, wherein a drawer is disposed above the heating assembly, and the heat exchange plate is located within the drawer.

4. The refrigerator of claim 3, wherein the heating assembly comprises:

a heating layer for heating food material;

the drawer supporting seat comprises a drawer supporting seat side wall and a drawer supporting seat bottom wall, and an accommodating cavity for accommodating the drawer is defined by the drawer supporting seat side wall and the drawer supporting seat bottom wall; the heating layer is located the outside of the bottom wall surface of the drawer supporting seat, and the drawer supporting seat can be inserted into or drawn out of the second sub-temperature-changing chamber.

5. The refrigerator of claim 4, wherein the drawer further comprises:

the heat conduction piece, the heat conduction piece with the zone of heating contacts, and sets up the zone of heating with between the heat transfer board.

6. The refrigerator according to claim 5, wherein the heat conduction member is provided outside a bottom wall surface of the drawer, and an opening is provided in a position of the drawer support corresponding to the heating layer, through which the heat conduction member is in contact with the heating layer.

7. The refrigerator as claimed in claim 6, wherein a locking groove is formed on an outer side of the bottom wall surface of the drawer, and a flange is formed at an upper end of the heat-conducting member and is engaged with the locking groove.

8. The refrigerator of claim 7, wherein the heating layer comprises a heat conductive plate, a first heating film and a heat insulating plate bonded in sequence from top to bottom.

9. The refrigerator according to any one of claims 3 to 8, wherein the heating circulation duct assembly includes:

the heating air channel comprises a heating air channel shell and a heating air channel cover plate which are mutually buckled, wherein a heating circulating air channel is formed between the heating air channel shell and the heating air channel cover plate, and a circulating fan is arranged in the heating circulating air channel;

the heating air channel cover plate is connected with the inner wall of the second sub-variable-temperature chamber in a clamping mode, and the heating air channel cover plate is provided with the heating air channel air outlet and the heating air channel air inlet which are communicated with the heating circulating air channel.

10. The refrigerator of claim 9, wherein an auxiliary heating assembly for heating the food materials placed in the second sub-temperature-changing chamber is disposed inside the heating circulation duct.

11. The refrigerator as claimed in claim 10, wherein an auxiliary air outlet is provided on a side wall of the drawer, the auxiliary air outlet is located above the heat exchange plate, and the auxiliary air outlet is communicated with the hot air duct inlet.

12. The refrigerator of claim 11, wherein the auxiliary heating assembly includes a second heating film and a heating film holder; the second heating film is arranged in the heating circulating air duct; the heating film support includes:

the supporting plate is used for attaching the second heating film;

the connecting plate is fixedly connected with the supporting plate and connected to the outer side of one side wall of the second sub-temperature-changing chamber;

heating film bracket mounting holes are respectively formed in two opposite side walls of the second sub-temperature-changing chamber; the support plate is erected on two opposite side walls of the second sub-temperature-changing chamber.

13. The refrigerator of claim 12, wherein a first refrigerating cycle duct assembly is provided in the first sub-temperature changing chamber, the first refrigerating cycle duct assembly comprising:

the first air duct foam and the second air duct foam are buckled with each other, and a first refrigeration cycle air duct is formed between the first air duct foam and the second air duct foam;

the first air channel cover plate covers the outer sides of the first air channel foam and the second air channel foam and is clamped with the inner wall of the first sub-temperature-changing chamber, and a first refrigeration air channel air outlet and a first refrigeration air channel air inlet which are communicated with the first refrigeration circulating air channel are formed in the first air channel cover plate;

and the first control air door is arranged in the first refrigeration cycle air channel and used for controlling the on-off of the freezing chamber and the first refrigeration cycle air channel.

14. The refrigerator of claim 13, wherein the second sub-temperature changing chamber further comprises:

the second refrigeration cycle air channel assembly is arranged on the inner side of the second sub-variable temperature chamber, and comprises:

a third air duct foam and a fourth air duct foam which are mutually buckled, wherein a second refrigeration cycle air duct is formed between the third air duct foam and the fourth air duct foam;

the second air duct cover plate covers the outer sides of the third air duct foam and the fourth air duct foam and is clamped with the inner wall of the second sub-temperature-changing chamber, and a second refrigeration air duct air outlet and a second refrigeration air duct air inlet which are communicated with the second refrigeration circulating air duct are formed in the second air duct cover plate; the air inlet of the second refrigeration air duct is communicated with the air outlet of the heat exchange channel, and the air outlet of the second refrigeration air duct is communicated with the storage cavity;

and the second control air door is arranged in the second refrigeration cycle air channel and used for controlling the on-off of the freezing chamber and the second refrigeration cycle air channel.