CN110017647B - Air supply system and refrigerator with same - Google Patents

Air supply system and refrigerator with same Download PDF

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Publication number
CN110017647B
CN110017647B CN201810020187.XA CN201810020187A CN110017647B CN 110017647 B CN110017647 B CN 110017647B CN 201810020187 A CN201810020187 A CN 201810020187A CN 110017647 B CN110017647 B CN 110017647B
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China
Prior art keywords
air
air supply
return
wind wheel
cover plate
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CN201810020187.XA
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Chinese (zh)
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CN110017647A (en
Inventor
李鸿亮
吴光瑞
李鹏辉
曹永�
刘伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Co Ltd
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Priority to CN201810020187.XA priority Critical patent/CN110017647B/en
Publication of CN110017647A publication Critical patent/CN110017647A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound

Abstract

The invention relates to the technical field of refrigeration and freezing, and provides an air supply system for a refrigerator and the refrigerator, wherein the air supply system comprises: the air duct cover plate and the refrigerator compartment liner jointly limit an air supply space and are configured to isolate the air supply space from a storage space in the compartment; a centrifugal wind wheel arranged in the air supply space and configured to suck air from both sides in the axial direction and blow the air out to the peripheral side; wherein, the air duct cover plate is provided with a plurality of air return inlets for allowing the air in the storage space to enter the air supply space; the centrifugal wind wheel is configured to be arranged in the air supply space with gaps between the centrifugal wind wheel and the air duct cover plate and between the centrifugal wind wheel and the inner container, so that air entering the air supply space through the air return opening is sucked from the front side of the centrifugal wind wheel, facing the air duct cover plate, and the rear side of the centrifugal wind wheel, deviating from the air duct cover plate. The air supply assembly provided by the invention has a novel air return path for air return from two sides, and the air return path of at least part of air is prolonged, so that the air flow of the air return is smooth, and the air return noise is reduced.

Description

Air supply system and refrigerator with same
Technical Field
The invention relates to the technical field of refrigeration and freezing, in particular to an air supply system for a refrigerator and the refrigerator with the air supply system.
Background
The rear side of the refrigerating chamber of the existing double-system refrigerator is generally provided with an air channel for providing cold quantity for the refrigerating chamber, and a fan arranged in the air channel can cause large return air noise and influence the use experience of a user due to the influence of wind resistance of an air channel cover plate when refrigeration wind circulation is actually carried out.
Disclosure of Invention
It is an object of the present invention to provide an air supply system for a refrigerator having a novel return air path.
It is another further object of the present invention to reduce the return air noise of the refrigerator compartment.
In particular, the present invention provides an air supply system for a refrigerator, comprising:
the air duct cover plate and the inner container of the refrigerator jointly limit an air supply space and are configured to isolate the air supply space from a storage space in the compartment of the refrigerator;
a centrifugal wind wheel arranged in the air supply space and configured to suck air from both sides in an axial direction and blow the air out to a peripheral side; wherein
A plurality of air return openings are formed in the air duct cover plate to allow air in the storage space to enter the air supply space; and is
The centrifugal wind wheel is configured to be arranged in the air supply space with gaps between the centrifugal wind wheel and the air duct cover plate and between the centrifugal wind wheel and the inner container, so that air entering the air supply space through the air return opening is sucked from the front side of the centrifugal wind wheel, facing the air duct cover plate, and the rear side of the centrifugal wind wheel, deviating from the air duct cover plate.
Further, the air supply system further includes:
the fan volute is arranged on the inner side of the air duct cover plate; and
the fan rear cover is configured to be respectively covered and buckled with the fan volute on the front side and the rear side of the centrifugal wind wheel; wherein
The rear cover of the fan is provided with a rear air suction port to allow the centrifugal wind wheel to suck air in the air supply space through the rear air suction port;
the fan volute is provided with a front air suction port to allow the centrifugal wind wheel to suck air in the air supply space through the front air suction port.
Further, the air supply assembly is configured to be positioned at the rear side of the lower part of the compartment, and an airflow channel is arranged above the air supply assembly;
an evaporator is arranged in the airflow channel, and the airflow channel is provided with an air supply outlet for supplying air to the storage space; and is
The centrifugal wind wheel is configured to accelerate the air flow upward into the air flow passage and through the evaporator toward the supply air outlet.
Furthermore, the corresponding area of the inner container and the centrifugal wind wheel is configured to be outwards protruded away from the air duct cover plate so as to increase the air supply space on the rear air suction side of the centrifugal wind wheel.
Furthermore, the inner container below the evaporator is configured to bend and extend towards the air duct cover plate to form a water receiving bottom, and the projection of the evaporator in the vertical direction falls into the water receiving bottom.
Furthermore, a part of the inner container which is positioned below the evaporator and above the water receiving bottom is configured to be arranged to deviate from the air duct cover plate in a protruding mode so as to form a water receiving side portion;
the water receiving bottom is configured to be higher at one side close to the air duct cover plate than at one side close to the water receiving side part, so that water drops falling on the water receiving bottom flow towards the water receiving side part; and
the intersection of the water receiving side part and the water receiving bottom part is configured to have an inclination angle which enables the middle position to be lower than the position far away from the middle position, and the middle position is provided with a water outlet so as to guide liquid flowing to the intersection to flow out of the water outlet.
Further, the evaporator has a plurality of fins, and one bottom corner of the fin is configured to have a diagonal portion to change a dropping position of water droplets dropping from the fin.
Furthermore, two groups of return air groups are arranged on the air duct cover plate, and each return air group comprises a plurality of longitudinally extending return air inlets;
the air return groups are respectively a left air return group and a right air return group which are positioned in the transverse left and right end areas of the air duct cover plate, and the projections of the two air return groups on the air duct cover plate are positioned outside the projections of the front air suction port and the rear air suction port on the air duct cover plate.
Further, the air supply system further includes:
a plurality of shielding caps configured to be disposed at left or right sides of the plurality of return air inlets of the return air group at the storage space side, respectively, to shield the return air inlets from a side portion; wherein
A part of the shielding caps are arranged on the right sides of the plurality of air return openings in the left air return group and are provided with openings facing to the left, so that air in the storage room flows to the inner sides of the shielding caps from the left to the right and enters the air return openings in the left air return group;
the other part of the shielding caps are arranged on the left sides of the plurality of air return openings in the right air return group and are provided with openings facing the right, so that air in the storage room flows to the inner sides of the shielding caps from the right to the left and enters the air return openings in the right air return group.
The invention also provides a refrigerator having a cabinet including at least one compartment and an air supply system according to any one of the above, wherein,
at least one of the compartments is a refrigerating compartment, and the air supply system is arranged in the refrigerating compartment.
The air supply assembly provided by the invention has a novel air return path for double-side air return, part of air bypasses the centrifugal wind wheel and is sucked from the rear side of the centrifugal wind wheel, and the part of air has a longer flow path, so that the phenomenon that a large amount of air on the storage space side of the refrigerator compartment flows into the air supply space in a short time to cause too low negative pressure in the storage space side compartment is avoided.
Furthermore, the air supply assembly prolongs the return air path of at least part of air, and avoids that a large amount of air which enters the air supply space through the return air inlet changes the flow direction suddenly, so that the return air flow is smooth to reduce the return air noise.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic front view of an air delivery assembly in an air delivery system according to one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along section line A-A in FIG. 1, wherein the dashed lines with arrows show the flow direction of the air;
FIG. 3 is a schematic exploded view of an air delivery assembly according to one embodiment of the present invention;
FIG. 4 is a schematic exploded view of an air delivery assembly from another angle in accordance with one embodiment of the present invention;
FIG. 5 is a schematic front view of a blower rear cover according to one embodiment of the invention;
FIG. 6 is a schematic side cross-sectional view of a compartment having an air supply system according to one embodiment of the present invention;
FIG. 7 is a schematic front view of a portion of the liner according to one embodiment of the invention;
FIG. 8 is a schematic front view of an evaporator in an air supply system according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken along section line C-C in FIG. 8;
FIG. 10 is a schematic expanded view of a fin according to one embodiment of the invention.
Detailed Description
Fig. 1 is a schematic front view of an air supply assembly in an air supply system according to an embodiment of the present invention. Fig. 2 is a schematic cross-sectional view taken along a sectional line a-a in fig. 1.
A refrigerator may generally have a cabinet outer case as an outer surface thereof and an inner container inside the cabinet outer case. The inner container can limit a chamber, and at least part of the space in the chamber can be a storage space. The compartment can be a plurality of compartments, and can be a refrigerating compartment, a freezing compartment, a temperature-changing compartment or the like as required. Further, an air flow passage is generally provided in a refrigerating chamber of some air-cooled or dual-system refrigerators to provide cooling air to a storage space of the refrigerating chamber. The air flow channel can be provided with an air supply assembly to form fast flowing air, or the air flow channel and the air supply assembly can jointly form an air supply system for providing cooling air for the refrigerating chamber. The air supply assembly may be disposed at the most upstream of the air supply system. It will be understood that the most upstream is referred to herein as the source of the air delivery path and not the actual mounting location of the air delivery assembly.
The air supply system for the refrigerator may include an air supply assembly, which may include a duct cover 200 and a centrifugal wind wheel 400. The air duct cover 200 may be disposed substantially parallel to the inner container 100 of the refrigerator compartment to define the air supply space 20 together with the inner container 100 of the refrigerator compartment, and configured to isolate the air supply space 20 from the storage space 10 in the compartment 1. The centrifugal wind wheel 400 may be disposed in the air supply space 20, and may be configured to suck air from both sides in the axial direction and blow the air out to the peripheral side. Further, a plurality of air return openings 201 may be formed on the air duct cover 200 to allow air in the storage space 10 to enter the air supply space 20. Specifically, the centrifugal wind wheel 400 is disposed in the air supply space 20 with a gap between the centrifugal wind wheel and the air duct cover 200 and the inner container 100, so that air entering the air supply space 20 through the air return opening 201 is sucked from the front side of the centrifugal wind wheel 400 facing the air duct cover 200 and the rear side of the centrifugal wind wheel facing away from the air duct cover 200.
Specifically, the duct cover 200 may be disposed in front of the inner container 100 at the rear side of the refrigerator compartment 1 to form the blowing space 20 at the rear side of the compartment 1. An air return opening 201 formed in the air duct cover 200 allows air in the storage space 10 to flow into the air supply space 20 from front to back. Thus, centrifugal rotor 400 configured to simultaneously suck air from the front side and the rear side causes a part of air entering air supply space 20 to continue flowing backward and to flow toward the center of centrifugal rotor 400 at a position substantially behind centrifugal rotor 400 and to be sucked therein, and another part of air may be sucked therein at the front side of centrifugal rotor.
The air supply assembly of the invention has a novel air return path for double-side air return, part of air bypasses the centrifugal wind wheel 400 and is sucked from the rear side of the centrifugal wind wheel, the part of air has a longer flow path, and the phenomenon that a large amount of air at the side of the storage space 10 of the refrigerator compartment flows into the air supply space 20 in a short time to cause that the negative pressure of the side compartment of the storage space 10 is too low is avoided, so that a user can open the refrigerator door.
Further, the air supply assembly of the present invention extends the return air path of at least a portion of the air, and prevents a large amount of air that has just entered the air supply space 20 through the return air inlet 201 from suddenly changing flow direction, so that the return air flow is more gradual to reduce the return air noise.
FIG. 3 is a schematic exploded view of an air delivery assembly according to one embodiment of the present invention. FIG. 4 is a schematic exploded view of an air delivery assembly from another angle in accordance with one embodiment of the present invention.
In some embodiments of the invention, the air delivery assembly further comprises a blower volute and a blower back cover 300. The fan volute is disposed inside the air duct cover plate 200. The blower rear cover 300 may be configured to cover and buckle the front and rear sides of the centrifugal wind wheel 400 with the blower volute, respectively, to constitute a centrifugal blower together and to be fixedly installed on the inner container 100. Further, a rear air inlet 302 may be formed on the blower rear cover 300 to allow the centrifugal wind wheel 400 to suck air in the air supply space 20 through the rear air inlet 302. Accordingly, the blower volute may be provided with a front air inlet 204a to allow the centrifugal wind wheel 400 to suck air in the air supply space 20 through the front air inlet 204 a.
Fig. 5 is a schematic front view of a blower rear cover 300 according to an embodiment of the present invention.
Further, the inner side of the blower rear cover 300 may have double-layer ribs 301 profiling the blower volute and configured such that the end of the blower volute facing the blower rear cover 300 is inserted into the gaps between the double-layer ribs 301 when the blower rear cover 300 is mounted to the duct cover plate 200. Therefore, the installation and the positioning of the fan volute and the fan rear cover 300 are facilitated, and the connection firmness of the fan volute and the fan rear cover is enhanced.
Fig. 6 is a schematic side sectional view of a compartment 1 with an air supply system according to one embodiment of the invention.
In some embodiments of the invention, the air supply assembly is arranged to be located at the lower rear side of the compartment 1, above which the air flow channel 22 is provided. An evaporator 500 may be disposed in the air flow passage 22, and a blowing port for blowing air into the storage space 10 may be opened downstream thereof (i.e., in the present embodiment, in an upper region of the air flow passage 22). Accordingly, the centrifugal wind rotor 400 may be configured to blow upward to accelerate the airflow upward into the airflow path 22 and through the evaporator 500 to the supply air ports. That is, in the vertical direction, the blowing assembly may be located below the lowest layer of the racks in the compartment 1 to save the upper space of the storage space 10 and increase the effective volume of the compartment 1.
Further, in some embodiments of the present invention, the duct cover 200 may include a main body portion and a guide portion, and the blower volute may be disposed inside the main body portion. Specifically, the duct cover 200 may be composed of an upper portion and a lower portion, and the guide portion is located above the main body portion. The main body portion may be configured to be disposed away from the inner bladder 100 with respect to the air flow passage 22 to increase the air supply space 20 located at the front side of the centrifugal wind rotor 400.
Further, a corresponding region of the inner container 100 to the centrifugal wind wheel 400 is configured to protrude outward away from the air duct cover 200 to increase the air supply space 20 located at the rear side of the centrifugal wind wheel 400. Specifically, the degree of outward protrusion of the inner container 100 may be greater than the degree of forward movement of the main body portion to "occupy" the storage space 10, so as to ensure the volume of the storage space 10. It is to be understood that "occupied" herein means that the main body portion is closer to the front side of the cabinet with respect to the guide portion. Since the rear side of the inner container 100 is a foaming layer of the refrigerator, the front and rear positions of the inner container 100 do not have obvious influence on the foaming effect of the foaming layer. That is, the air supply space 10 can "occupy" more the space on one side of the foam layer, so that the main body portion does not need to be arranged too far forward, and the air return requirement is met by the centrifugal fans sucking air from both sides. Therefore, the volume of the storage space 10 is not less than that of the existing storage space provided with the air supply assembly which only sucks air from the front side.
It should be understood that the above-mentioned "outwardly convex" refers to the outward of the air supply space 20, and may be toward the storage space 10, or may be toward the foaming layer of the refrigerator at the rear side of the inner container 100.
In some embodiments of the present invention, two sets of return air groups may be provided on the main body, each return air group including a plurality of longitudinally extending return air inlets 201. The two return air groups may be respectively disposed in regions of the main body portion near the lateral end portions. Specifically, the left air return group and the right air return group may be located in the regions near the lateral left and right ends of the main body portion. Further, the projections of the two sets of return air groups on duct cover 200 are located outside the projections of front and rear air inlets 204a and 302 on duct cover 200. Therefore, air in the storage space 10 enters the air supply space 20 from the peripheral sides (mainly the transverse two sides) of the fan volute, so that the change of the flowing direction of return air flow is more gradual, and more overlarge steering is avoided.
The arrangement of double-side air suction of the air return opening 201 positioned on the peripheral side of the fan volute and the centrifugal wind wheel 400 reduces the required steering angle of the return air flow, provides enough space for changing the flowing direction for the return air flow, and is convenient for the return air flow to be continuously and stably sucked by the centrifugal wind wheel 400. Particularly, the rear side of the centrifugal wind wheel 400 is sucked to be provided with an extended return air path, so that the return air flow is gentle, the return air noise is further reduced, the negative pressure on the storage space side is prevented from being too low, and a user can conveniently open the refrigerator door.
In some embodiments of the invention, the air delivery assembly further comprises a plurality of shield caps. The plurality of shielding caps may be configured to be disposed at left or right sides of the plurality of return air inlets 201 of the return air group at the storage space 10 side, respectively, to shield the return air inlets 201 from the side.
Specifically, a part of the plurality of shielding caps may be disposed at the right side of the plurality of air return openings 201 in the left air return group and have an opening facing to the left, so that the air in the storage space 10 flows from the left to the right to the inside of the shielding caps and enters the air return openings 201 in the left air return group. Correspondingly, the other part of the plurality of shielding caps is arranged at the left side of the plurality of return air inlets 201 in the right return air group and is provided with an opening facing to the right, so that the air in the storage space 10 flows to the inner side of the shielding caps from the right to the left and enters the return air inlets 201 in the right return air group. Therefore, the air entering the air supply space 20 from the left and right sides flows towards the center of the centrifugal wind wheel 400, and the air suction amount of the front air inlet of the centrifugal wind wheel 400 in unit time is increased. In addition, the shielding caps can prevent liquid or particles and other solid matters in the storage space 10 from entering the air supply space 20 along with air.
Figure 7 is a schematic front view of a portion of the liner 100 in accordance with one embodiment of the present invention.
In some embodiments of the present invention, a portion of the inner container 100 below the evaporator 500 is configured to bend and extend toward the air duct cover 200 to form the water receiving bottom 101, so that the projections of the evaporator 500 in the vertical direction all fall into the water receiving bottom 101.
That is, the water receiving tank of the refrigerator may be directly formed by bending and extending the inner container 100 without additional arrangement. Specifically, a portion of the liner 100 below the evaporator 500 and above the water receiving bottom 101 is configured to protrude away from the air duct cover 200 to form the water receiving side 102. The water receiving bottom 101 is disposed at a higher side near the air duct cover 200 than the side near the water receiving side 102, so that water drops falling thereon flow toward the water receiving side 102. Further, the junction of the water receiving side portion 102 and the water receiving bottom portion 101 is configured to have an inclination angle such that the middle position thereof is lower than the position far from the middle position, and the middle position is opened with a water discharge port 103103 to guide the liquid flowing to the junction to flow out of the water discharge port 103103.
In some embodiments of the present invention, the water receiving side 102 may be configured to protrude toward the foaming layer to further guide the intersection of the water receiving bottom 101 and the water receiving side 102 to slope downward and away from the air outlet duct.
The refrigerator of the invention does not need to use water receiving tank parts, and the defrosting water is guided to be discharged through the inner container 100 with a water receiving shape. Therefore, the manufacturing cost of the refrigerator is further reduced, and the matching installation of the water receiving groove structure and the inner container 100 is avoided while the defrosting water is completely discharged.
Fig. 8 is a schematic front view of an evaporator 500 in an air supply system according to an embodiment of the present invention. Fig. 9 is a schematic cross-sectional view taken along a sectional line C-C in fig. 8. Fig. 10 is a schematic development of a fin 503 according to an embodiment of the present invention.
In some embodiments of the present invention, the evaporator 500 may have a plurality of straight pipes 501 extending laterally and arranged vertically at intervals, and a plurality of transition pipes 502 connecting the straight pipes 501. A plurality of fins 503 are installed in parallel and at intervals on each of the linear pipes 501, and plate bodies 503a of the fins 503 are arranged to be perpendicular to the inner container 100. Specifically, the oblique folding portion 503b is located at a bottom of the plate body 503a on a side away from the inner container 100, and is perpendicular to the plate body 503 a.
That is, one end of each fin 503 has one bent portion. The fin 503 may be configured to be a rectangular sheet, one corner of the fin may be configured to be bent out of a plane where most of the plate body 503a of the fin 503 is located to form a slant-folded portion 503b, and the slant-folded portion 503b and a bent portion of the plate body 503a of the fin 503 form a slant-folded edge 503 c. Specifically, the inclined folding part 503b may preferably be a corner located at the outer side of the lower end of each fin 503 to guide the liquid such as defrosting water on the fin 503 to flow toward the inner side of each fin 503 along the inclined folding edge 503c, so as to make the water drops dropping from the evaporator 500 closer to the inner container 100 as a whole, thereby reducing the width requirement of the water abutting structure.
Further, in some embodiments of the present invention, the oblique folding portion 503b is configured to be disposed perpendicular to the plate body 503a of the fin 503, so that the end of the oblique folding portion 503b is as inward as possible, and the plate body 503a and the oblique folding portion 503b of the fin 503 are kept at a certain distance, thereby ensuring the contact of the evaporator 500 with the air flowing through the evaporator and enhancing the heat exchange efficiency of the evaporator.
Further, the plurality of fins 503 mounted on each of the linear pipes 501 may be arranged such that the respective diagonal folding portions 503b thereof are folded in the same direction, thereby ensuring uniform defrosting water or the like dropping from the evaporator 500. The plurality of linear tubes 501 and the plurality of transition tubes 502 may collectively form a serpentine tube, and the arrangement of the plurality of fins 503 on the plurality of linear tubes 501 at the upper portion of the serpentine tube may be configured to be denser than the arrangement of the plurality of fins 503 on the plurality of linear tubes 501 at the lower portion of the serpentine tube.
In some embodiments of the present invention, the evaporator 500 may have two vertically extending support plates, a left support plate 504a at the left end of the plurality of linear tubes 501, and a right support plate 504b at the right end of the plurality of linear tubes 501. Further, the bottom ends of the left support plate 504a and the right support plate 504b each have a fin 503 having a diagonal portion 503b, and the diagonal portions 503b of the two fins 503 at the end portions of the support plates are each arranged to be bent toward the middle of the linear tube 501. That is, the fins 503 at the end of the support plate may have substantially the same plate body 503a and diagonal folded portions 503b as the fins 503 of the linear duct 501. In particular, the fins 503 of one end may be configured to have the exact same structure as the fins 503 of the linear tubes 501, and the fins 503 of the other end may be configured to have a mirror-symmetrical structure with the fins 503 of the linear tubes 501.
Specifically, the diagonal portions 503b of the end fins 503 positioned in the bending direction of the diagonal portions 503b of the fins 503 on the linear pipe 501 are arranged in the opposite direction to the bending direction of the diagonal portions 503b of the fins 503 of the linear pipe 501, that is, in the opposite direction to the diagonal portions 503b of the fins 503 of the linear pipe 501. Therefore, the end parts of the fins 503 positioned at the outermost side of the evaporator 500 are bent towards the inner side of the evaporator 500, the flowing and dripping positions of the defrosting water are improved, and the requirement on the structural size of the water tank or the water receiving liner 100 is reduced.
The evaporator 500 of the invention can realize the inward movement of the dripping position of the liquid such as defrosting water and the like only by bending one end corner of the common fin without other complex structures, and the technical scheme is simple and easy to implement.
Furthermore, the bent oblique folding part 503b is located between two adjacent fins 503, that is, is located on the flowing path of the heat exchange airflow, so that the turbulent flow of the heat exchange airflow by the fins 503 is increased, and the heat exchange efficiency is improved.
In particular, the evaporator 500 having the above-described fins 503 is particularly suitable for installation in cooperation with the above-described air supply assembly. Due to the above-mentioned special structure of the blower assembly, a partial region of the inner container 100 is required to protrude into the blower space 20 beyond the size of the general evaporator 500. The evaporator 500 with the fins 503 can guide the defrosting water to the inside of the evaporator 500 on the premise of ensuring the heat exchange area, and prevent the defrosting water from dropping outside the water receiving structure (namely, the water receiving bottom 101 of the inner container 100), thereby simplifying the structure of the inner container 100, avoiding the problem that the inner container 100 is adsorbed or installed insecurely due to the arrangement of the bending part or the extending part of the inner container 100, and further simplifying the water retaining structures of the air duct cover plates 200 such as the fan rear cover 300 and the air duct cover plate 200, and the installation structure connected with the inner container 100.
The invention also provides a refrigerator which is provided with a box body with at least one compartment 1 and the air supply assembly. At least one compartment 1 is a refrigerating compartment, and the air supply assembly is arranged in the refrigerating compartment. Preferably, the refrigerator further has the above-described evaporator 500 to simplify the assembly of the air supply assembly within the refrigerator.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (9)

1. An air supply system for a refrigerator, comprising:
the air duct cover plate and the inner container of the refrigerator jointly limit an air supply space and are configured to isolate the air supply space from a storage space in the compartment of the refrigerator;
a centrifugal wind wheel arranged in the air supply space and configured to suck air from both sides in an axial direction and blow the air out to a peripheral side; wherein
A plurality of air return openings are formed in the air duct cover plate to allow air in the storage space to enter the air supply space; and is
The centrifugal wind wheel is configured to be arranged in the air supply space with gaps between the centrifugal wind wheel and the air duct cover plate as well as between the centrifugal wind wheel and the inner container so as to suck air entering the air supply space through the air return opening from the front side of the centrifugal wind wheel facing the air duct cover plate and the rear side of the centrifugal wind wheel departing from the air duct cover plate at the same time, wherein,
the air supply assembly is configured to be positioned at the rear side of the lower part of the compartment, and an airflow channel is arranged above the air supply assembly;
an evaporator is arranged in the airflow channel, and the airflow channel is provided with an air supply outlet for supplying air to the storage space; and is
The centrifugal wind wheel is configured to accelerate the air flow upward into the air flow passage and through the evaporator toward the supply air outlet.
2. The air supply system of claim 1, further comprising:
the fan volute is arranged on the inner side of the air duct cover plate; and
the fan rear cover is configured to be respectively covered and buckled with the fan volute on the front side and the rear side of the centrifugal wind wheel; wherein
The rear cover of the fan is provided with a rear air suction port to allow the centrifugal wind wheel to suck air in the air supply space through the rear air suction port;
the fan volute is provided with a front air suction port to allow the centrifugal wind wheel to suck air in the air supply space through the front air suction port.
3. The air supply system of claim 1,
the corresponding area of the inner container and the centrifugal wind wheel is configured to be deviated from the air duct cover plate and protrude outwards, so that the air supply space on the rear air suction side of the centrifugal wind wheel is enlarged.
4. The air supply system of claim 1,
and the part of the inner container positioned below the evaporator is configured to bend and extend towards the air duct cover plate to form a water receiving bottom, and the projections of the evaporator in the vertical direction all fall into the water receiving bottom.
5. The air supply system of claim 4,
part of the inner container which is positioned below the evaporator and above the water receiving bottom is configured to be arranged to deviate from the air duct cover plate in a protruding mode so as to form a water receiving side portion;
the water receiving bottom is configured to be higher at one side close to the air duct cover plate than at one side close to the water receiving side part, so that water drops falling on the water receiving bottom flow towards the water receiving side part; and
the intersection of the water receiving side part and the water receiving bottom part is configured to have an inclination angle which enables the middle position to be lower than the position far away from the middle position, and the middle position is provided with a water outlet so as to guide liquid flowing to the intersection to flow out of the water outlet.
6. The air supply system of claim 5,
the evaporator has a plurality of fins, and one bottom corner of the fin is configured to have a diagonal portion to change a dropping position of water droplets dropping from the fin.
7. The air supply system of claim 2,
two groups of return air groups are arranged on the air duct cover plate, and each return air group comprises a plurality of longitudinally extending return air inlets;
the air return groups are respectively a left air return group and a right air return group which are positioned in the transverse left and right end areas of the air duct cover plate, and the projections of the two air return groups on the air duct cover plate are positioned outside the projections of the front air suction port and the rear air suction port on the air duct cover plate.
8. The air delivery system of claim 7, further comprising:
a plurality of shielding caps configured to be disposed at left or right sides of the plurality of return air inlets of the return air group at the storage space side, respectively, to shield the return air inlets from a side portion; wherein
A part of the shielding caps are arranged on the right sides of the plurality of air return openings in the left air return group and are provided with openings facing to the left, so that air in the storage room flows to the inner sides of the shielding caps from the left to the right and enters the air return openings in the left air return group;
the other part of the shielding caps are arranged on the left sides of the plurality of air return openings in the right air return group and are provided with openings facing the right, so that air in the storage room flows to the inner sides of the shielding caps from the right to the left and enters the air return openings in the right air return group.
9. A refrigerator having a cabinet including at least one compartment and an air supply system according to any one of claims 1 to 8,
at least one of the compartments is a refrigerating compartment, and the air supply system is arranged in the refrigerating compartment.
CN201810020187.XA 2018-01-09 2018-01-09 Air supply system and refrigerator with same Active CN110017647B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009061071A2 (en) * 2007-11-05 2009-05-14 Lg Electronics Inc. Apparatus for storing food
WO2013029686A1 (en) * 2011-09-02 2013-03-07 Carrier Corporation Refrigerated sales furniture
CN103673465A (en) * 2012-09-12 2014-03-26 青岛海尔模具有限公司 Air supply system for large-volume air-cooled refrigerator and air-cooled refrigerator
CN105402978A (en) * 2015-11-30 2016-03-16 合肥美菱股份有限公司 Air duct device of refrigerator and full-variable-temperature refrigerator
CN106123443A (en) * 2016-06-28 2016-11-16 青岛海尔股份有限公司 Refrigerator
CN107192198A (en) * 2017-06-29 2017-09-22 青岛海尔股份有限公司 Refrigerator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009061071A2 (en) * 2007-11-05 2009-05-14 Lg Electronics Inc. Apparatus for storing food
WO2013029686A1 (en) * 2011-09-02 2013-03-07 Carrier Corporation Refrigerated sales furniture
CN103673465A (en) * 2012-09-12 2014-03-26 青岛海尔模具有限公司 Air supply system for large-volume air-cooled refrigerator and air-cooled refrigerator
CN105402978A (en) * 2015-11-30 2016-03-16 合肥美菱股份有限公司 Air duct device of refrigerator and full-variable-temperature refrigerator
CN106123443A (en) * 2016-06-28 2016-11-16 青岛海尔股份有限公司 Refrigerator
CN107192198A (en) * 2017-06-29 2017-09-22 青岛海尔股份有限公司 Refrigerator

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