CN114001513A

CN114001513A - Refrigeration device

Info

Publication number: CN114001513A
Application number: CN202111294573.6A
Authority: CN
Inventors: 曾凡星; 田振华; 薛金亮
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Chongqing Haier Refrigeration Electric Appliance Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Chongqing Haier Refrigeration Electric Appliance Co Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-02-01
Also published as: WO2023078147A1

Abstract

The invention provides a refrigeration device which comprises a first compartment, a second compartment, a third compartment, a refrigeration assembly arranged in the first compartment, and an air duct assembly which is matched with the refrigeration assembly to supply air and return air to the second compartment and the third compartment, wherein the air duct assembly comprises an air supply structural member for supplying air to the second compartment and the third compartment, a first air return structural member and a second air return structural member for returning air to the second compartment and the third compartment respectively, the first air return structural member and the second air return structural member are arranged adjacently, and the refrigeration device further comprises a temperature control device for preventing the air return temperature of the first air return structural member and the air return temperature of the second air return structural member from interfering with each other. The invention can reduce the space occupied by the return air duct, is beneficial to improving the volume ratio of the refrigeration equipment, and can also reduce the risk of freezing the return air duct.

Description

Refrigeration device

Technical Field

The invention relates to refrigeration equipment, in particular to refrigeration equipment with a simple structure.

Background

The existing refrigeration equipment generally adopts an air-cooled type to improve the refrigeration efficiency, wherein the air duct structure of the air-cooled type refrigeration equipment comprises an air supply structural part and an air return structural part, the capacity of the refrigerator is increased gradually along with the gradual increase of the demand of a user, more compartments are generally arranged to meet the demand, a temperature change chamber is generally added on the basis of a freezing chamber and a refrigerating chamber, and accordingly the air supply structural part and the air return structural part are required to be independently arranged for each compartment to meet the normal refrigeration cycle.

And the air return structural members of the refrigerating chamber and the temperature-changing chamber are arranged relatively far away, so that the phenomenon that the air return temperature of the temperature-changing chamber interferes with the air return temperature of the refrigerating chamber when the temperature of the temperature-changing chamber is low is avoided, and the refrigerating air return structural members are easily frozen. However, when the return air structural part is separately arranged, the installation is more complicated, and the space on the rear side of the inner container is occupied, so that the capacity of the refrigerator is smaller.

In view of the above, there is a need for an improved refrigeration apparatus to solve the above problems.

Disclosure of Invention

The invention aims to provide a refrigeration device with a simple structure.

In order to achieve the above object, the present invention provides a refrigeration apparatus, including a first compartment, a second compartment, a third compartment, a refrigeration assembly disposed in the first compartment, and an air duct assembly that is matched with the refrigeration assembly to supply air and return air to the second compartment and the third compartment, wherein the air duct assembly includes an air supply structural member that supplies air to the second compartment and the third compartment, a first return air structural member and a second return air structural member that return air to the second compartment and the third compartment, respectively, the first return air structural member and the second return air structural member being disposed adjacent to each other, and the refrigeration apparatus further includes a temperature control device that prevents mutual interference between a temperature of the first return air structural member and a temperature of the second return air structural member.

As a further improvement of the present invention, the first compartment, the second compartment, and the third compartment are sequentially disposed at intervals along the height direction, and the first return air structural member and the second return air structural member are an integral structure and disposed on one side in the transverse direction.

As a further improvement of the present invention, the air duct assembly includes a foam base, a foam cover cooperating with the foam base, and a partition protruding from the foam base and/or the foam cover to form the first return air structure and the second return air structure, respectively.

As a further improvement of the invention, the temperature control device is a heating element disposed on the surface of or inside the partition.

As a further improvement of the invention, the refrigeration assembly comprises a compressor, a condenser, a dew removing pipe, a capillary tube and an evaporator which are connected with each other, and the heating element is connected between the condenser and the dew removing pipe or between the dew removing pipe and the capillary tube.

As a further refinement of the invention, the air duct assembly further comprises a reinforcement projecting from the foam base and/or the foam cover.

As a further improvement of the present invention, the air supply structural member extends along the transverse direction and is integrally disposed with the first air return structural member and the second air return structural member.

As a further improvement of the present invention, the air supply structural member includes a first air supply structural member and a second air supply structural member, the first air supply structural member is disposed in the foaming cavity between the first compartment and the second compartment to supply the cooling energy of the first compartment to the second compartment, and the second air supply structural member is disposed in the foaming cavity between the second compartment and the third compartment to supply the cooling energy of the second compartment to the third compartment.

As a further improvement of the present invention, the first compartment is a freezing compartment, the second compartment is a temperature-variable compartment, and the third compartment is a refrigerating compartment.

As a further improvement of the present invention, the first air supply structure has a first air supply port which penetrates and communicates the first compartment and the second compartment in the height direction, the second air supply structure has a second air supply port which penetrates and communicates the second compartment and the third compartment in the height direction, and the number of the first air supply ports is larger than that of the second air supply ports.

The invention has the beneficial effects that: the first return air structural member and the second return air structural member of the refrigeration equipment are arranged adjacently, and the temperature control device for preventing the return air temperature of the first return air structural member and the return air temperature of the second return air structural member from interfering with each other is arranged. Therefore, the space occupied by the return air structural part can be reduced, the volume ratio of the refrigeration equipment can be improved, and the risk of freezing the return air structural part can be reduced.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the refrigeration unit of the present invention.

Fig. 2 is a schematic perspective view of fig. 1 after the housing and the back plate are hidden.

Fig. 3 is an exploded perspective view of fig. 2.

Fig. 4 is a perspective view of fig. 2 from another perspective.

Fig. 5 is an exploded perspective view of fig. 4.

Fig. 6 is an exploded perspective view of the integrated return air structure of fig. 3.

Fig. 7 is an exploded perspective view of fig. 6 from another perspective.

Fig. 8 is a perspective view of the integrated return air structure of fig. 3 from another perspective.

Fig. 9 is an exploded perspective view of fig. 8.

Fig. 10 is a cross-sectional view taken along direction AA in fig. 1.

Fig. 11 is a schematic perspective view of a second embodiment of the refrigeration unit of the present invention. .

Fig. 12 is a perspective view of the duct assembly of fig. 11.

Fig. 13 is a perspective view of fig. 11 from another perspective.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.

Referring to fig. 1 to 13, an embodiment of a refrigeration apparatus according to the present invention is shown, where the refrigeration apparatus includes a first compartment 1, a second compartment 2, a third compartment 3, a refrigeration assembly (not shown) disposed in the first compartment 1, and an air duct assembly that is matched with the refrigeration assembly to supply air and return air to the second compartment 2 and the third compartment 3, where the air duct assembly includes an air supply structural member that supplies air to the second compartment 2 and the third compartment 3, and a first return air structural member and a second return air structural member that return air to the second compartment 2 and the third compartment 3, respectively, and the first return air structural member and the second return air structural member are disposed adjacent to each other, and the refrigeration apparatus further includes a temperature control device that prevents mutual interference between a return air temperature of the first return air structural member and a return air temperature of the second return air structural member.

Specifically, as shown in fig. 1 and fig. 2, a first embodiment of the refrigeration apparatus of the present invention is a refrigerator, specifically, a three-door refrigerator arranged at intervals in the height direction, in the present embodiment, wherein the first compartment 1, the second compartment 2, and the third compartment 3 are a freezing compartment, a temperature-changing compartment, and a refrigerating compartment (only part of each compartment is shown in the figures). And the refrigerator, the temperature-changing chamber and the freezing chamber are sequentially arranged from top to bottom along the height direction of the refrigerator, and the temperature-changing chamber and the freezing chamber can also be arranged above the freezing chamber at intervals along the transverse direction. In other embodiments, the refrigerator may also be a side-by-side refrigerator, a french refrigerator, or other types of refrigerators, and the refrigeration device may also be a freezer.

In this embodiment, the first air return structural member and the second air return structural member are an integrated air return structural member 4 that is integrally disposed, but in other embodiments, the first air return structural member and the second air return structural member may be separately disposed. Specifically, the integrated return air structural member 4 extends in the height direction to be disposed at one side of the second compartment 2 and the third compartment 3, and the integrated return air structural member 4 has a first return air inlet 41 and a second return air inlet 42 which are respectively communicated with the second compartment 2 and the third compartment 3, and a return air outlet 43 which is communicated with the first compartment 1. Consequently, integrative return air structure 4 both can carry out the return air to second compartment 2, also can carry out the return air to third compartment 3 to avoided setting up the return air structure respectively alone to second compartment 2 and third compartment 3, and then practiced thrift the cost, also reduced return air structure shared space, be favorable to improving the percentage of volume of refrigerator.

Meanwhile, in order to ensure the volume ratio of the traditional refrigerator, the middle position of the inner container is usually arranged in a backward concave mode so as to install an air supply structure for refrigerating the compartment, and the integrated air return structural member 4 is arranged on one side of the second compartment 2 and one side of the third compartment 3 in an extending mode along the height direction, so that the situation that the front and back directions of the refrigerator are too thick due to the fact that the integrated air return structural member 4 is arranged in the middle is avoided, and the miniaturization design of the refrigerator is facilitated under the condition that the volume ratio of the refrigerator is ensured.

Furthermore, since the second compartment 2 is a temperature-variable compartment and is disposed below the third compartment 3 which is a refrigerating compartment, when the second compartment 2 is used for freezing, the internal temperature of the second compartment is lower than 0 degree, and the return air temperature of the second compartment is also lower than 0 degree, so that the first return air inlet 41 is closer to the return air outlet 43 in the height direction, that is, the distance between the first return air inlet 41 and the return air outlet 43 in the height direction is smaller than the distance between the second return air inlet 42 and the return air outlet 43 in the height direction, and the return air of the second compartment 2 affects the return air of the third compartment 3 as little as possible, thereby reducing the moist and hot air in the return air of the third compartment 3 from freezing the return air structural component.

Of course, in other embodiments, if the second compartment 2 and the third compartment 3 are disposed above the first compartment 1 along the transverse direction, the integrated air return structure 4 may also be suitable, and only the structure and the installation position need to be readjusted, for example: integrative return air structure 4 is "T" shape structure and sets up in the rear side of second compartment 2 and third compartment 3 and is located the intermediate position, so, the distance is nearer between first return air import 41 and the second return air import 42, is favorable to integrative return air structure 4's miniaturization. Or the integral return air structural member 4 is provided in an "L" shape, and the portion extending in the lateral direction may be provided in the foaming layer space between the second compartment 2, the third compartment 3, and the first compartment 1, and the portion extending in the height direction may be provided on one side in the lateral direction as in the present embodiment.

As shown in fig. 6 to 9, in the present embodiment, the integral return air structure 4 includes a foam base 44 and a foam cover 45 which are installed in a front-back direction in a matching manner, and a fixing structure fixedly connecting the foam base 44 and the foam cover 45, wherein the fixing structure includes a positioning portion 461 protruding from one of the foam base 44 and the foam cover 45, and a positioning groove 462 recessed from the other to match with the positioning portion 461. Therefore, with the above structure, the integrated air return structural member 4 has a simple structure, a low cost, and is easy to install.

The integrated return air structure 4 further includes a sealing structure formed between the foam base 44 and the foam cover 45, the sealing structure includes a protruding portion 471 protruding from one of the foam base 44 and the foam cover 45, and a groove 472 recessed from the other to match the protruding portion 471, a return air path for circulating the return air of the second compartment 2 and the third compartment 3 is formed between the foam base 44 and the foam cover 45, and the protruding portion 471 is disposed beside the return air path. By providing the protruding portion 471 and the groove 472, the leakage of the return air from the gap between the foam seat 44 and the foam cover 45 can be effectively reduced, thereby ensuring the normal cycle operation of the refrigeration system.

In this embodiment, the integrated return air structure 4 further includes a reinforcement 48 disposed in the return air passage, and the reinforcement 48 is formed to protrude from the foam base 44 and/or the foam cover 45 and disposed near the second return air inlet 42. By providing the reinforcement 48, the risk of the foam material crushing the foam base 44 or the foam cover 45 during foaming can be reduced.

The integrated return air structure 4 further includes a divider 411 protruding from the foam base 44 and/or the foam cover 45 to divide the first return air path 49 and the second return air path 410. In this embodiment, the partition 411 is formed by the foam base 44 and the foam cover 45 respectively protruding relatively, and the partition 411 is of a foam structure, so that the return air of the second compartment 2 can be effectively prevented from directly contacting the return air of the third compartment 3, and the risk of freezing the second return air duct 410 is reduced.

The partition 411 may not only achieve the above-mentioned function, but also reinforce the structure, and the reinforcement portion 48 is disposed in the second return air passage 410 and near the second return air inlet 42, so as to cooperate with the partition 411 in the height direction to provide the structure reinforcing function. Meanwhile, due to the existence of the partition 411, the first air return structure and the second air return structure are formed, that is, the first air return structure and the second air return structure share the partition 411.

Further, in order to ensure that the partition 411 can effectively prevent the return air of the second compartment 2 from directly contacting the return air of the third compartment 3, a convex part 412 and a concave part 413 which are matched with each other are further arranged between the two partitions 411, so that the tail end of the partition 411 is sealed, and the risk of the return air of the second compartment 2 directly contacting the return air of the third compartment 3 is reduced. Of course, in other embodiments, when the partition 411 protrudes from one of the foam base 44 and the foam cover 45, the other may be recessed with a recess 412 matching with the partition 411.

In this embodiment, the temperature control device is a heating element (not shown) disposed on the surface or inside of the partition 411, and the risk of freezing of the second return air duct 410 is reduced to the maximum extent by the cooperation between the heating element and the partition 411. When the heating element is separately provided, the heating element may be provided on the inner wall of the return air passage, or the integrated return air structure 4 may include a mounting portion for mounting the heating element.

In this embodiment, the heating element is disposed inside the partition 411, i.e., the mounting portion, i.e., the partition 411, thereby improving the integrity of the integrated return air structure 4. Because the heating element is generally of a metal structure, the risk that the heating element is directly contacted with return air wet air can be reduced, the oxidation risk of the heating element is reduced, and the service life of the heating element is prolonged.

In this embodiment, the refrigeration assembly comprises a compressor, a condenser, a dew-removing pipe, a capillary tube and an evaporator which are connected with each other, and the heating element is connected between the condenser and the dew-removing pipe or between the dew-removing pipe and the capillary tube. The temperature of the high-temperature gas is used for heating the return air in the second compartment 2 and the third compartment 3, so that the risk of freezing the second return air passage 410 is reduced. Of course in other embodiments, the heating element may be connected to the condenser or dew-removing pipe via a heat transfer element, such as: connected by a heat pipe. Or the heating element is controlled by a power supply to heat.

As shown in fig. 11 to 13, in order to further improve the efficiency of installation of the air duct assembly and further improve the volume fraction of the refrigerator, the refrigeration apparatus of the present invention further provides a second embodiment, which is different from the first embodiment in that: the air supply structural part and the integrated air return structural part 4 are also arranged integrally, so that when the structural part assembly is assembled, only one-time installation is needed, and the assembly is very efficient. Therefore, the air supply structure and the integral air return structure 4 can be formed by only slightly adjusting the foam base 44 and the foam cover 45 to be matched with each other.

Specifically, the air supply structure includes with first air supply structure 5 and second air supply structure 6 that integrative return air structure 4 links to each other, first air supply structure 5 sets up in order to supply air to second compartment 2 in the foaming cavity between first compartment 1 and second compartment 2, second air supply structure 6 sets up in order to supply air to third compartment 3 in the foaming cavity between second compartment 2 and third compartment 3. Namely, the first air supply structural member 5 and the second air supply structural member 6 are respectively connected with the integrated air return structural member 4 along the transverse direction. And above-mentioned seal structure also is applicable to the air supply structure to reduce the risk that the air supply leaked, guarantee to refrigerate reliable and stable.

Through the arrangement, the foaming layer space between the first compartment 1 and the second compartment 2, and between the second compartment 2 and the third compartment 3 can be fully utilized for installation of the first air supply structural part 5 and the second air supply structural part 6, so that the thickness of the first air supply structural part 5 and the thickness of the second air supply structural part 6 protruding out of the rear side of the inner container are greatly reduced, the miniaturization design of the refrigerator is facilitated, meanwhile, the first air supply structural part 5 and the second air supply structural part 6 do not need to be subjected to excessive abdicating by the inner container, the volume ratio of the refrigerator can be ensured, and the first air supply structural part 5 and the second air supply structural part 6 occupy the foaming layer space, and the air supply structural parts can also serve as foaming layers, so that the use of foaming materials in the foaming process of the refrigerator can be reduced to a certain extent.

Of course, in other embodiments, the first air supply structure 5 and the second air supply structure 6 may be separately installed, and need not be integrated with the integrated air return structure 4. When the second compartment 2 and the third compartment 3 are arranged above the first compartment 1 along the transverse direction, the number of the air supply structural members does not need to be two, and the air supply structural members can be directly arranged in a foaming layer space between the second compartment 2 and the third compartment 3, the foaming layer space is a space extending along the height direction, and then air supply outlets corresponding to the second compartment 2 and the third compartment 3 are respectively arranged on the left side and the right side of the air supply structural members.

In the present embodiment, the first air blowing structure 5 and the second air blowing structure 6 are provided in the foam layer space between the first compartment 1 and the second compartment 2, and between the second compartment 2 and the third compartment 3, and therefore, the air blown from the second compartment 2 is blown directly through the first compartment 1, but the air blown from the third compartment 3 is not blown directly from the first compartment 1, but blown from the first compartment 1 to the second compartment 2, and then blown from the second compartment 2 to the third compartment 3 through the second air blowing structure 6. Compared with the traditional multi-chamber refrigerator, the refrigerator has the advantages that the structure size of the air supply structural member is greatly reduced, the structure is compact, the cost is reduced, and the installation efficiency is improved.

In this embodiment, since the second compartment 2 is a temperature-variable compartment and the third compartment 3 is a refrigerating compartment, the temperature in the second compartment 2 can satisfy the demand of the third compartment 3, and therefore, the cooling energy in the second compartment 2 is sent into the third compartment 3 without affecting the storage of the articles in the third compartment 3.

The first air blowing structure 5 has a first air blowing port 51 that penetrates and communicates the first compartment 1 and the second compartment 2 in the height direction, and the second air blowing structure 6 has a second air blowing port 61 that penetrates and communicates the second compartment 2 and the third compartment 3 in the height direction. In this embodiment, the number of the first blowing ports 51 is larger than the number of the second blowing ports 61.

Therefore, when the second compartment 2 needs to be frozen, the first blowing ports 51 contribute to a faster reduction in the temperature of the second compartment 2, while the number of the second blowing ports 61 is relatively small, so that the food in the third compartment 3 is less likely to be frozen even if the temperature in the second compartment 2 is low. Of course, damper structures may be provided in the first air supply port 51 and the second air supply port 61 to adjust air supply, thereby further improving the temperature control accuracy. Of course, in other embodiments, the number of the first air blowing openings 51 and the second air blowing openings 61 may be equal, and the first air blowing openings 51 may be larger than the second air blowing openings 61.

In this embodiment, for convenience the installation of air duct assembly, first compartment 1,

second compartment

2 and 3 rear sides in third compartment still have respectively forward the concave portion of stepping down 11 of establishing, consequently, be convenient for on the one hand first air supply structure 5 and second air supply structure 6 install in foaming layer space, on the other hand, it is right in front and back direction and transverse direction to step down portion 11 the air duct assembly carries out the part spacing, prevents excessive installation, avoids causing the damage to the air duct assembly.

Refrigeration plant is still including setting up in the shell 7 in the inner bag outside, with inner bag and shell 7 matched with backplate 8, when the equipment, earlier with inner bag and shell 7 mutual equipment, then will install the wind channel subassembly, the wind channel subassembly is laminated with the inner wall of shell 7 along the opposite side of transverse direction mutually, installs backplate 8 at last, the rear side of wind channel subassembly is laminated with the inner wall of backplate 8 mutually, consequently, shell 7,

backplate

8 and 11 three realization pairs jointly of portion of stepping down the location of wind channel subassembly, consequently need not additionally to set up the mounting and fix the wind channel subassembly, improved the installation effectiveness in the very big degree. Meanwhile, when the refrigerator completes foaming, the foaming material is solidified, so that the fixation of the air duct assembly can be further enhanced, and the stability and the reliability between the air duct assembly and each chamber are ensured.

As shown in fig. 10, in order to further improve the fixing effect, the structural strength and the heat insulation effect of the air duct assembly, the air duct assembly is disposed in a non-planar manner on the side where the air duct assembly is matched with the inner wall of the housing 7 and the inner wall of the back plate 8. Specifically, the side and/or the back of wind channel subassembly are wavy setting, unsmooth promptly, and consequently, in the foaming process, the wind channel subassembly can have more contact surfaces and foaming material to contact to improve fixed effect, not only so, because wave structure still can carry on spacingly to the wind channel subassembly, prevent to remove. This is because when the foaming material solidifies, the structure of foaming layer is unsmooth cooperation setting with the wave structure to carry out spacing. In addition, the raised structure increases thickness to some extent, thereby improving structural strength and thermal insulation effect.

In this embodiment, the wave structures are arranged at intervals up and down, but in other embodiments, the wave structures may also be arranged at intervals along the front-back direction, or the wave structures may be arranged in combination with each other in both directions.

The position of the air duct assembly can be effectively fixed for ensuring that the back plate 8 is prevented from being installed, the air duct structure is deviated, and finally the situation that the surface of the air duct assembly cannot be normally filled in the foaming process is caused. The length of the protruding part of the wave structure can be increased, so that when the air duct assembly is installed, the protruding part is abutted to the inner wall of the shell 7 and the inner wall of the back plate 8, the air duct assembly is directly fixed to the position giving part 11 and the inner wall of the shell 7, and the air duct assembly cannot deviate even if the back plate 8 is installed. Of course, the convex part of the wave structure can be wholly or partially increased.

In addition, the invention also provides another mode, namely, a plurality of fixing parts 9 can be separately arranged on the side wall and the back surface of the air duct component in a protruding mode so as to be respectively abutted against the inner wall of the shell 7 and the inner wall of the back plate 8, and the fixing parts 9 are also concavely provided with wiring grooves 91, so that wiring harnesses can be conveniently routed.

In summary, the first return air structural member and the second return air structural member of the refrigeration device of the present invention are disposed adjacent to each other, and a temperature control device is disposed to prevent the return air temperature of the first return air structural member and the return air temperature of the second return air structural member from interfering with each other. Therefore, a housing and a display panel exposed to the upper side of the housing are provided on the top of the cabinet. Therefore, the space occupied by the air return structural part can be reduced, the volume ratio of the refrigerator can be improved, and the risk of freezing the air return structural part can be reduced.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a refrigeration plant, includes first room, second room, third room, sets up in the refrigeration subassembly in first room, cooperatees with the refrigeration subassembly and carries out the wind channel subassembly of air supply and return air, its characterized in that to second room and third room: the air duct assembly comprises an air supply structural member for supplying air to the second compartment and the third compartment, and a first air return structural member and a second air return structural member for returning air to the second compartment and the third compartment respectively, wherein the first air return structural member and the second air return structural member are arranged adjacently, and the refrigeration equipment further comprises a temperature control device for preventing the mutual interference of the return air temperature of the first air return structural member and the return air temperature of the second air return structural member.

2. The refrigeration appliance according to claim 1, wherein: first room, second room and third room set up along direction of height interval in proper order, first return air structure and second return air structure just set up in one side of transverse direction as an organic whole structure.

3. The refrigeration appliance according to claim 2, wherein: the air duct assembly includes a foam base, a foam cover mated with the foam base, and a divider projecting from the foam base and/or the foam cover to form the first and second return air structures, respectively.

4. A refrigeration appliance as recited in claim 3 wherein: the temperature control device is a heating element arranged on the surface or inside the separating part.

5. The refrigeration appliance according to claim 4, wherein: the refrigeration assembly comprises a compressor, a condenser, a dew removing pipe, a capillary pipe and an evaporator which are connected with each other, and the heating element is connected between the condenser and the dew removing pipe or between the dew removing pipe and the capillary pipe.

6. A refrigeration appliance as recited in claim 3 wherein: the air duct assembly also includes a stiffener projecting from the foam base and/or the foam cover.

7. The refrigeration appliance according to claim 2, wherein: the air supply structural part extends along the transverse direction and is integrally arranged with the first air return structural part and the second air return structural part.

8. The refrigeration appliance according to claim 7 wherein: the air supply structural part comprises a first air supply structural part and a second air supply structural part, the first air supply structural part is arranged in a foaming cavity between the first chamber and the second chamber so as to supply the cold energy of the first chamber to the second chamber, and the second air supply structural part is arranged in the foaming cavity between the second chamber and the third chamber so as to supply the cold energy of the second chamber to the third chamber.

9. The refrigeration appliance according to claim 8, wherein: the first compartment is a freezing compartment, the second compartment is a temperature-variable compartment, and the third compartment is a refrigerating compartment.

10. The refrigeration appliance according to claim 9 wherein: the first air supply structure is provided with first air supply outlets which penetrate through and are communicated with the first compartment and the second compartment along the height direction, the second air supply structure is provided with second air supply outlets which penetrate through and are communicated with the second compartment and the third compartment along the height direction, and the number of the first air supply outlets is larger than that of the second air supply outlets.