CN114076450A - Air-cooled refrigerator - Google Patents
Air-cooled refrigerator Download PDFInfo
- Publication number
- CN114076450A CN114076450A CN202010832824.0A CN202010832824A CN114076450A CN 114076450 A CN114076450 A CN 114076450A CN 202010832824 A CN202010832824 A CN 202010832824A CN 114076450 A CN114076450 A CN 114076450A
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- Prior art keywords
- air
- inner container
- refrigerator
- return
- upper inner
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- 238000001816 cooling Methods 0.000 claims abstract description 61
- 238000007710 freezing Methods 0.000 claims description 24
- 230000008014 freezing Effects 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims 2
- 238000005187 foaming Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 180
- 238000005192 partition Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000013305 food Nutrition 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
-
- 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
- F25D17/065—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 with compartments at different temperatures
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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
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
- F25D2317/0651—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the bottom
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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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
- F25D2317/0655—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the top
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
- F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top
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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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
- F25D2317/0683—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans not of the axial type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides an air-cooled refrigerator which comprises a bottom inner container, a plurality of upper inner containers and an air return pipe, wherein a cooling chamber used for arranging an evaporator of the refrigerator is arranged at the bottom of the bottom inner container, a lateral air return opening leading to the cooling chamber is formed in the bottom of the bottom inner container, the upper inner containers are sequentially arranged above the bottom inner container, an air outlet is formed in each upper inner container, the air return pipe extends downwards to the lateral air return opening along the air outlets of the upper inner containers, and therefore return air flow of the upper inner containers is led into the cooling chamber. The air-cooled refrigerator adopts the single air return pipe to guide the return air flow of the refrigerating chamber and the temperature-changing chamber, so that the foaming space of the refrigerator can be effectively saved, the heat insulation performance of the refrigerator is improved, and the cost of the refrigerator can be reduced.
Description
Technical Field
The invention relates to a refrigeration and freezing technology, in particular to an air-cooled refrigerator.
Background
In the refrigerator with the evaporator arranged at the bottom in the prior art, the return air pipe is mainly used for guiding return air flow of the temperature-changing chamber into the cooling chamber positioned at the lowest part of the refrigerator, and the refrigerating chamber positioned at the highest part of the refrigerator adopts an independent air supply system. The design has certain defects, for example, the return air pipe can only ensure variable-temperature return air and has certain limitations; and two independent air supply systems inevitably occupy more foaming space, which only influences the heat load and increases the cost of the refrigerator.
Disclosure of Invention
It is an object of the present invention to overcome at least one of the disadvantages of the prior art and to provide an air-cooled refrigerator.
It is a further object of the present invention to provide an air-cooled refrigerator having a cooling compartment at the bottom thereof wherein a separate return air duct is provided for directing the return air flow from the upper liner into the cooling compartment.
Another further object of the present invention is to improve the heat exchange efficiency of the refrigerator.
In particular, the present invention provides an air-cooled refrigerator comprising:
the bottom of the bottom liner is provided with a cooling chamber for arranging an evaporator of the refrigerator, and a lateral air return opening leading to the cooling chamber is formed in the bottom of the bottom liner;
the upper inner containers are sequentially arranged above the bottom inner container, and each upper inner container is provided with an air outlet;
and the air return pipe extends downwards to the lateral air return openings along the air outlets of the upper inner containers, so that the return air flow of the upper inner containers is introduced into the cooling chamber.
Furthermore, a plurality of the air outlets are arranged at the positions, close to one side edge, of the rear wall of the corresponding upper inner container.
Further, the upper inner container comprises a first upper inner container positioned above the bottom inner container and a second upper inner container positioned above the first upper inner container; wherein
The space of the bottom inner container above the cooling chamber is configured into a freezing chamber;
the inner space of the first upper inner container is configured into a temperature-changing chamber;
the inner space of the second upper inner container is configured into a refrigerating chamber.
Furthermore, the section of the return air pipe between the second upper inner container and the first upper inner container is gradually bent to extend from the position of the air outlet of the second upper inner container to the position of the air outlet of the first upper inner container.
Further, the air-cooled refrigerator further comprises:
the separating cover plate is transversely arranged in the bottom inner container and is used for separating the cooling chamber from the freezing chamber; and is
The area of the bottom surface of the bottom inner container close to the two sides protrudes upwards to form a supporting part for supporting the separation cover plate,
the evaporator is arranged in the concave area between the supporting parts.
Further, the air-cooled refrigerator further comprises:
the air return cover is arranged at the front part of the cooling chamber and is provided with at least one forward air return opening for communicating the cooling chamber with the freezing chamber;
a preset interval is arranged between the front end of the supporting part on one side and the return air cover, and
the lateral air return opening is arranged at the front end of the supporting part, so that air from the air return pipe enters the cooling chamber from the space between the front end of the supporting part and the air return cover.
Further, the air return pipe extends from the outer side of the rear wall of the bottom inner container to the outer side of the bottom wall of the bottom inner container and extends along the outer side of the bottom wall of the bottom inner container to be connected with the lateral air return opening.
Further, the evaporator is a fin evaporator, which includes:
a group of fins arranged in parallel along the front-rear direction of the refrigerator;
the evaporation tube is arranged between the fins in a penetrating way;
and the supporting end plates are arranged on two sides of the fins, and the front ends of the supporting end plates close to one side of the lateral air return openings are bent towards the supporting parts to form shielding parts, so that the shielding parts are utilized to prevent air flow from passing through a gap between the evaporator and the supporting parts.
Further, the air-cooled refrigerator further comprises:
the centrifugal fan is obliquely arranged behind the evaporator, an air suction inlet of the centrifugal fan faces the front upper part, and an air outlet of the centrifugal fan faces the rear part;
and the air supply duct is communicated with the air outlet of the centrifugal fan, extends upwards and is configured to convey airflow discharged by the centrifugal fan to the freezing chamber and/or the temperature-changing chamber and/or the refrigerating chamber.
Furthermore, the return air pipe is a flat square pipe and is attached to the bottom liner and the upper liners by utilizing the wider surface.
In the air-cooled refrigerator, the cooling chamber is arranged at the bottom of the bottom liner, the upper liner is positioned above the bottom liner, each upper liner is provided with an air outlet, the liner of the bottom liner is provided with a lateral air return opening communicated with the cooling chamber, and the air return pipes extend downwards to the lateral air return openings along the air outlet of the upper liners, so that return air flows of the upper liners are introduced into the cooling chamber to continuously exchange heat with the evaporator to form circulating air flows.
Furthermore, in the air-cooled refrigerator, the air outlets are arranged at the positions, close to one side edge, of the rear wall of the corresponding upper inner container, and the sections, between the second upper inner container and the first upper inner container, of the air return pipe are gradually bent, so that the phenomenon that when the air return pipe is vertical and return air flows of the refrigerating chamber and the temperature-variable chamber exist in the air return pipe at the same time can be avoided, the return air flow of the refrigerating chamber enters the temperature-variable chamber through the first air outlet, the return air flow of the temperature-variable chamber is offset or restrained from having the trend of entering the refrigerating chamber through the second air outlet upwards, the pressure loss of the air return pipe is reduced, and the heat exchange efficiency of the refrigerator is improved.
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 view of a refrigerator according to one embodiment of the present invention;
FIG. 2 is a longitudinal sectional view of a refrigerator according to one embodiment of the present invention, in which an upper inner container is hidden;
FIG. 3 is an exploded view of the refrigerator of one embodiment of the present invention with the outer case hidden;
FIG. 4 is a schematic diagram of the positional relationship of the bottom liner, the first upper liner and the second upper liner in the refrigerator according to one embodiment of the present invention;
FIG. 5 is a rear view of the refrigerator with the outer case hidden according to one embodiment of the present invention;
FIG. 6 is a left side view of the refrigerator with the outer case hidden according to one embodiment of the present invention;
fig. 7 is a transverse sectional view of a bottom inner container of a refrigerator according to an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "depth", and the like indicate orientations or positional relationships that are based on the orientation in a normal use state of the refrigerator as a reference, and can be determined with reference to the orientations or positional relationships shown in the drawings, for example, "front" indicating the orientation refers to the side of the refrigerator facing the user. This is merely to facilitate description of the invention and to simplify the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be taken to be limiting of the invention.
Referring to fig. 1, the refrigerator 1 of the present embodiment generally includes a box body 10, and the box body 10 may include a casing, an inner container, a heat insulation layer, and other accessories. The outer case is an outer structure of the refrigerator 1, and protects the entire refrigerator 1. In order to insulate the heat conduction from the outside, a thermal insulation layer is provided between the outer shell and the inner container of the container 10, and the thermal insulation layer is generally formed by a foaming process. The number and the functions of the inner containers can be configured according to the use requirements of the refrigerator. In this embodiment, the inner container includes at least a bottom inner container 110, and the bottom inner container 110 can be a freezing inner container.
Referring to fig. 2, the bottom of the bottom inner container 110 of the refrigerator 1 of the present embodiment is provided with a cooling chamber 140, an evaporator 220 is disposed in the cooling chamber 140, and the evaporator 220 provides cooling capacity for the refrigerator 1. Specifically, a partition cover 210 is disposed below the bottom inner bladder 110, and the partition cover 210 is transversely disposed inside the bottom inner bladder 110 to partition the bottom inner bladder 110 into the cooling chamber 140 and the freezing chamber 160 located above the cooling chamber 140.
That is, the evaporator 220 in this embodiment is located below the bottom inner container 110, and this arrangement can avoid the depth of the freezing chamber from being reduced due to the evaporator occupying the rear space of the freezing chamber in the conventional refrigerator, and especially for the side-by-side combination refrigerator, it is important to increase the depth of the freezing chamber under the condition that the transverse size of the freezing chamber is originally small, so that the space utilization rate of the refrigerator 1 is improved, and the storage of articles which have large volume and are not easy to separate is facilitated.
In addition, in traditional refrigerator, the freezer that is located the below is located the position lower, and the user need bend down or squat down by a wide margin and just can get the operation of putting article to this freezer, and the user of being inconvenient for uses, especially inconvenient old man uses. In this embodiment, the cooling chamber 140 occupies the space below the bottom inner container 110, so that the height of the freezing chamber 160 above the cooling chamber 140 is raised, and the stooping degree of the user when the user operates to pick and place articles in the freezing chamber 160 is reduced, thereby improving the use experience of the user.
Referring to fig. 3, in the present embodiment, the evaporator 220 may have a flat rectangular parallelepiped shape as a whole, is disposed at the front of the cooling chamber 140, and is obliquely disposed in the cooling chamber 140. The mode breaks through the technical limitation that the depth size is reduced and the evaporator is required to be horizontally arranged in the prior art. Although the inclined placement of the flat cuboid evaporator 220 results in an increase in the length in the front-rear direction, the inclined placement thereof makes the arrangement of other components in the cooling chamber 140 more reasonable, and the actual airflow field analysis proves that the wind circulation efficiency is also higher and the drainage is also more smooth. The layout manner of the inclined arrangement of the evaporator 220 is one of the main technical improvements made by the present embodiment. In some specific embodiments, the inclination angle of the evaporator 220 is set to be 7-8 °, for example, it may be set to be 7 °, 7.5 °, 8 °, and preferably 7.5 °.
Referring to fig. 2 and 3, in the present embodiment, the refrigerator 1 may further include an air supply assembly disposed behind the evaporator 220. The air supply assembly may include a centrifugal fan and an air supply duct 150. The centrifugal fan is obliquely disposed behind the evaporator 220, with its air inlet facing forward and downward and its air outlet facing rearward, and is configured to promote the formation of a cooling air flow sent to the freezing chamber 160 via the evaporator 220, and the air supply duct 150 is communicated with the air outlet of the centrifugal fan, extends upward, and is configured to deliver the air flow discharged from the centrifugal fan to the freezing chamber 160. The horizontal distance from the front end of the centrifugal fan to the evaporator 220 accounts for less than 4.5%, for example, 4.3% of the depth of the casing 10 in the front-rear direction.
Referring to fig. 2 and 3, the refrigerator 1 may further include an air duct back plate 240, where the air duct back plate 240 is disposed in front of the rear wall of the bottom inner container 110, and may be substantially parallel to the rear wall of the bottom inner container 110 to define an air supply duct 150 together with the rear wall of the bottom inner container 110, and the air supply duct 150 is communicated with the air outlet of the centrifugal fan and extends upward. The duct back 240 is provided with at least one air supply outlet 242, and the air supply outlet 242 is used for communicating the air supply duct 150 and the freezing chamber 160. Since the air supply duct 150 communicates with the cooling chamber 140 and the partition cover 210 serves as a partition of the cooling chamber 140, the duct back plate 240 can abut against the partition cover 210 to seal the gap between the cooling chamber 140 and the air supply duct 150.
Referring to fig. 2 and 3, the centrifugal fan may further include a fan blade 250, a fan upper cover 252, and a fan bottom case 254. The fan upper cover 252 extends into the cooling chamber 140 from the lower end of the air duct back plate 240 obliquely downward, the fan bottom shell 254 covers the fan upper cover 252, and the fan blade 250 is disposed in a fan cavity (not numbered in the figure) formed by the fan upper cover 252 and the fan bottom shell 254. The air duct back plate 240 and the fan upper cover 252 can also be configured as an integral part, so as to simplify the installation process, reduce the cost, and make the whole air duct structure more stable.
Referring to fig. 1 to 3, the refrigerator 1 may further include an air return cover 230, wherein the air return cover 230 is disposed at a front portion of the cooling compartment 140, and at least one front air return opening 232 communicating the cooling compartment 140 and the freezing compartment 160 is opened thereon.
The evaporator 220 in the cooling chamber 140 exchanges heat with ambient air to reduce the temperature thereof to form a cooling air flow, and the cooling air flow is discharged from the cooling chamber 140 to the air supply duct 150 under the urging of the centrifugal fan, and then enters the freezing chamber 160 from the air supply opening 242 on the duct back plate 240 to exchange heat with the air in the freezing chamber 160 to reduce the temperature of the freezing chamber 160. After heat exchange, the refrigerant airflow may flow back to the cooling chamber 140 through the front air return opening 232 of the air return cover 230, and continue to exchange heat with the evaporator 220, thereby forming a circulating airflow path.
Referring to fig. 3 to 6, in some embodiments of the present invention, the bottom inner container 110 is provided with a lateral air return opening 114 leading to the cooling chamber 140, the refrigerator 1 may further include a plurality of upper inner containers and an air return pipe 300, the plurality of upper inner containers are sequentially arranged above the bottom inner container 110, each upper inner container 110 is provided with an air outlet, and the air return pipe 300 extends downwards to the lateral air return opening 114 along the plurality of air outlets of the upper inner containers, so as to introduce the return air flow of the plurality of upper inner containers into the cooling chamber 140.
The side air return opening 114 may be located at one side of the cooling compartment 140, so that the return air flow of the upper inner container can be discharged to the side of the evaporator 220 through the side air return opening 114, thereby prolonging the contact path between the return air flow of the upper inner container and the evaporator 220 and improving the heat exchange efficiency.
In the present embodiment, each upper liner is configured to be independent of the bottom liner 110 such that the upper liner no longer occupies the space of the bottom liner 110, increasing the volume of the freezer compartment 160 defined by the bottom liner 110.
Referring to fig. 3 and 4, specifically, the upper liner includes a first upper liner 120 located above the bottom liner 110 and a second upper liner 130 located above the first upper liner 120, a first air outlet 122 is disposed on a rear wall of the first upper liner 120, and a second air outlet 132 is disposed on a rear wall of the second upper liner 130. The return air duct 300 has a lower end nozzle 312 connected to the side return air opening 114, a middle nozzle 314 connected to the first exhaust opening 122, and an upper end nozzle 316 connected to the second exhaust opening 132. That is, the return duct 300 is integrally extended at the rear walls of the bottom liner 110, the first upper liner 120, and the second upper liner 130.
Referring to fig. 5, an upper first upper air supply duct 256 communicated with the air supply duct 150 of the bottom inner container 110 and an upper second upper air supply duct 258 communicated with the first upper air supply duct 256 are further disposed at the rear wall of the inner container of the first upper inner container 120. That is, the air supply duct 150 communicates with the first upper air supply duct 256, or the air supply duct 150, the first upper air supply duct 256 and the second upper air supply duct 258 communicate with each other, so that the refrigerating airflow in the air supply duct 150 enters the first upper air supply duct 256 and the second upper air supply duct 258 under the action of the centrifugal fan, and the refrigerating airflow can be discharged into the upper liner through the upper air supply duct, and exchanges heat with the air in the upper liner, so as to reduce the temperature of the upper liner. Since the cooling compartment 140 of the refrigerator 1 is located at the bottom of the bottom inner container 110, i.e., the lowest portion of the refrigerator 1, the return air flow in the upper inner container is discharged into the cooling compartment 140 through the return air duct 300, and is cooled by heat exchange with the evaporator 220 to form a circulating air flow.
In some preferred embodiments, the interior of the first upper liner 120 can be divided into left and right storage regions, and the two storage regions can also be configured as temperature change chambers, such as temperature change drawers. The second upper inner container 130 is located above the first upper inner container 120, and its inner space can be configured as a refrigerating chamber. In particular, as is well known to those skilled in the art, the temperature inside the refrigerating compartment can also be set between 2 ℃ and 10 ℃, preferentially between 4 ℃ and 7 ℃; the temperature of the temperature-changing chamber can be adjusted to-18 ℃ to 8 ℃ at will. The optimum storage temperatures for different kinds of goods are different and the suitable storage locations are different, for example, for fruit and vegetable food in a cold storage room.
As described in the background art, in the refrigerator with a bottom evaporator in the prior art, the return air duct is mainly used to guide the return air flow in the temperature-varying compartment into the cooling compartment located at the lowest part of the refrigerator, and the refrigerating compartment located at the highest part of the refrigerator adopts an independent air supply system. The design has certain defects, for example, the return air pipe can only ensure variable-temperature return air and has certain limitations; and two independent air supply systems inevitably occupy more foaming space, which only influences the heat load and increases the cost of the refrigerator.
The air-cooled refrigerator 1 of this embodiment adopts the return air current of single return air pipe 300 water conservancy diversion walk-in room and temperature-changing room, can save refrigerator 1's foaming space effectively, reduces blockking to the foaming layer, guarantees the thickness of foaming, improves refrigerator 1's thermal insulation performance, can also reduce refrigerator 1's cost simultaneously.
In addition, as is well known to those skilled in the art, the temperature of the fresh food compartment is relatively high compared to the temperature change compartment and the freezer compartment, and therefore, the return air stream from the fresh food compartment is at a relatively high pressure. When the air-cooled refrigerator 1 adopts the single air return pipe 300 to guide the return air flow of the refrigerating chamber and the temperature change chamber to the cooling chamber 140, the return air flow of the refrigerating chamber can play a role in improving the air pressure of the whole return air pipe 300, so that the flow rate of the return air flow of the return air pipe 300 is increased, the return air efficiency is increased, the refrigeration effect of the refrigerator 1 is further improved, and the technical effect is also verified on trial-manufactured products by an inventor.
Referring to fig. 5 and 6, in some embodiments of the present invention, a plurality of air outlets are disposed at a position near one side edge of the rear wall of the corresponding upper inner container. The arrangement of the plurality of exhaust ports near one side edge also allows the return duct 300 to be kept as vertical as possible, thereby ensuring the aesthetic appearance of the cabinet 10.
The section of the return duct 300 between the second upper liner 130 and the first upper liner 120 is gradually curved to extend from the position of the second exhaust port 132 of the second upper liner 130 to the position of the first exhaust port 122 of the first upper liner 120.
Referring to fig. 5, in the present embodiment, a certain distance may be maintained between the first exhaust opening 122 and the second exhaust opening 132 in the horizontal direction, so that the return air duct 300 is located at the second upper inner container 130 and the first upper inner container 120 to form a bending section in the horizontal direction.
Referring to fig. 6, a certain distance may be maintained between the first exhaust opening 122 and the second exhaust opening 132 in the depth horizontal direction, so that the return duct 300 is located at the second upper liner 130 and the first upper liner 120 to form a bending section in the depth horizontal direction.
The inventors found through experiments that when the return air duct 300 simultaneously guides the return air flow of the refrigerating chamber and the temperature-changing chamber, the optimum pipe shape of the return air duct 300 is not completely vertical. When the air return pipe 300 is vertical and the air return flows of the refrigerating chamber and the temperature-variable chamber exist in the pipe at the same time, the air return flow of the refrigerating chamber can enter the temperature-variable chamber through the first air outlet 122, and the air return flow of the temperature-variable chamber also has a tendency of upwards entering the refrigerating chamber through the second air outlet 132, so that the flow rate of the air return flow in the air return pipe 300 is integrally reduced, and the heat exchange efficiency is further reduced.
The section of the return air duct 300 between the second upper liner 130 and the first upper liner 120 in this embodiment is bent in the depth direction and the transverse direction, which can counteract or suppress the above-mentioned trend of the return air flow, so that when the return air duct 300 has the return air flows of the refrigerating chamber and the temperature changing chamber at the same time, the mutual interference is avoided, the pressure loss of the return air duct 300 is effectively reduced, the heat exchange efficiency is improved, and the above-mentioned technical effects are also verified by trial-manufactured products, which has significant progress.
Referring to fig. 3 and 4, in some embodiments of the present invention, the bottom surface of the bottom inner container 110 adjacent to the two sides is protruded upward to form supporting portions 112 for supporting the partition cover plate 210, and the evaporator 220 is disposed in the concave region between the supporting portions 112.
In the present embodiment, the areas of the bottom surface of the bottom inner container 110 near both sides protrude upward to form the supporting portions 112, which may also be understood as the areas of the bottom surface of the bottom inner container 110 meeting the bottom wall and both sides of the area protrude inward and upward to form the supporting portions 112, the upper surface of the supporting portions 112 may be used to support the partition cover plate 210, and the middle area of the two supporting portions 112 forms a recessed area relative to the two supporting portions for disposing the evaporator 220.
Alternatively, the bottom surface of the depressed area may be provided as an inclined plate downward from the rear to the front, so that the evaporator 220 can be obliquely disposed in the cooling chamber 140, to achieve the technical effect of the oblique disposition of the evaporator 220 in the above-described embodiment.
In addition, the inwardly recessed support portion 112 may also allow more room for the press cabin below the cooling chamber 140, making the arrangement of the entire cabinet 10 more reasonable.
Referring to fig. 7, in some embodiments of the present invention, a front end of the one side supporting portion 112 is spaced from the return air cover 230 by a predetermined distance, and the side return air inlet 114 is disposed at the front end of the supporting portion 112, so that the air from the return air duct 300 enters the cooling compartment 140 from the space between the front end of the supporting portion 112 and the return air cover 230.
In the present embodiment, the evaporator 220 is disposed in a concave area formed by the two side supporting portions 112, which is located at the center of the cooling chamber 140, and the lateral air return opening 114 is disposed at the front end of one of the supporting portions 112. That is, the side return air inlet 114 is located at the side of the evaporator 220, the return air cover 230 is located in front of the evaporator 220, and the return air cover 230 has a predetermined interval with the front end of the supporting portion 112, so that a return air region is formed between the side return air inlet 114 and the return air cover 230, and the return air region is located in front of the side of the evaporator 220, that is, the return air flow entering the cooling compartment 140 can be discharged to the front of the side of the evaporator 220, which can serve to extend the contact path of the return air flow with the evaporator 220, thereby improving the heat exchange efficiency.
The set interval value can be configured to be any value within the range of 20 mm-60 mm, for example, 20mm, 30mm, 50mm, 60mm, etc., so as to ensure that the normal return air of the bottom inner container 110 is not influenced while the return air efficiency of the upper inner container is improved.
Referring to fig. 7, further, the evaporator 220 may also be a finned evaporator, which includes a set of fins 222, an evaporating tube 224 and a supporting end plate 226. The fins 222 are arranged in parallel along the front-back direction of the refrigerator 1, and a refrigerant is arranged in the evaporating pipe 224 to provide cold energy for the refrigerator 1 and is arranged among the fins 222 in a penetrating manner; the support end plates 226 are disposed on both sides of the fins 222, and the front end of the support end plate 226 near the side of the side air return opening 114 is bent toward the support portion 112 to form a shielding portion, so as to prevent the air flow from passing through the gap between the evaporator 220 and the support portion 112.
In the present embodiment, the evaporator 220 is disposed in a depressed area formed by the side support portions 112 with a certain gap from the side support portions 112. The supporting end plate 226 serves to block the gap, so as to prevent the air flow from passing through the evaporator 220 from the gap under the action of the centrifugal fan without heat exchange of the evaporator 220, thereby further improving the refrigeration efficiency of the refrigerator 1.
Referring to fig. 3, 5 and 6, in some embodiments of the present invention, the air return pipe 300 extends from the outside of the rear wall of the bottom liner 110 to the outside of the bottom wall of the bottom liner 110, and extends along the outside of the bottom wall of the bottom liner 110 to connect with the lateral air return opening 114.
That is, the upper end of the return air duct 300 in this embodiment extends downward from the second exhaust opening 132 to the first exhaust opening 122, then extends from the first exhaust opening 122 to the outside of the rear wall of the bottom liner 110, and finally extends in a substantially transverse direction to meet the lateral return air opening 114. That is to say, the whole of the return air duct 300 in this embodiment is located at the rear portion of the liner, and compared with the return air duct at the side portion, the transverse size of the box body 10 can be reduced by such an arrangement manner, so that the box body 10 is more reasonable and beautiful.
Further, return air pipe 300 can also set up to flat square pipe to the one side that utilizes the broad pastes and leans on in bottom inner bag 110 and a plurality of upper portion inner bags, can enough satisfy normal return air demand like this, has reduced the transverse dimension that return air pipe 300 occupied again, has improved return air pipe 300's steadiness simultaneously.
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 (10)
1. An air-cooled refrigerator comprising:
the bottom of the bottom liner is provided with a cooling chamber for arranging an evaporator of the refrigerator, and a lateral air return opening leading to the cooling chamber is formed in the bottom of the bottom liner;
the upper inner containers are sequentially arranged above the bottom inner container, and each upper inner container is provided with an air outlet;
and the air return pipe extends downwards to the lateral air return openings along the air outlets of the upper inner containers, so that the return air flow of the upper inner containers is introduced into the cooling chamber.
2. The air-cooled refrigerator of claim 1, wherein the air-cooled refrigerator is a refrigerator that uses air as a cooling medium
The air outlets are arranged at the positions, close to one side edge, of the corresponding rear wall of the upper inner container.
3. The air-cooled refrigerator of claim 2, wherein the air-cooled refrigerator is a refrigerator that uses air as a refrigerant
The upper inner container comprises a first upper inner container positioned above the bottom inner container and a second upper inner container positioned above the first upper inner container; wherein
The space of the bottom inner container above the cooling chamber is configured into a freezing chamber;
the inner space of the first upper inner container is configured into a temperature-changing chamber;
the inner space of the second upper inner container is configured into a refrigerating chamber.
4. The air-cooled refrigerator of claim 3, wherein the air-cooled refrigerator is a refrigerator
The section of the air return pipe between the second upper inner container and the first upper inner container is gradually bent so as to extend from the position of the air outlet of the second upper inner container to the position of the air outlet of the first upper inner container.
5. The air-cooled refrigerator of claim 3, further comprising:
the separating cover plate is transversely arranged in the bottom inner container and is used for separating the cooling chamber from the freezing chamber; and is
The area of the bottom surface of the bottom inner container close to the two sides protrudes upwards to form a supporting part for supporting the separation cover plate,
the evaporator is arranged in the concave area between the supporting parts.
6. The air-cooled refrigerator of claim 5, further comprising:
the air return cover is arranged at the front part of the cooling chamber and is provided with at least one forward air return opening for communicating the cooling chamber with the freezing chamber;
a preset interval is arranged between the front end of the supporting part on one side and the return air cover, and
the lateral air return opening is arranged at the front end of the supporting part, so that air from the air return pipe enters the cooling chamber from the space between the front end of the supporting part and the air return cover.
7. The air-cooled refrigerator of claim 6, wherein the air-cooled refrigerator is provided with a cooling fan
The air return pipe extends from the outer side of the rear wall of the bottom inner container to the outer side of the bottom wall of the bottom inner container, and extends along the outer side of the bottom wall of the bottom inner container to be connected with the lateral air return opening.
8. The air-cooled refrigerator of claim 6, wherein the air-cooled refrigerator is provided with a cooling fan
The evaporator is a fin evaporator, which includes:
a group of fins arranged in parallel along the front-rear direction of the refrigerator;
the evaporation tube is arranged between the fins in a penetrating way;
and the supporting end plates are arranged on two sides of the fins, and the front ends of the supporting end plates close to one side of the lateral air return openings are bent towards the supporting parts to form shielding parts, so that the shielding parts are utilized to prevent air flow from passing through a gap between the evaporator and the supporting parts.
9. The air-cooled refrigerator of claim 8, further comprising:
the centrifugal fan is obliquely arranged behind the evaporator, an air suction inlet of the centrifugal fan faces the front upper part, and an air outlet of the centrifugal fan faces the rear part;
and the air supply duct is communicated with the air outlet of the centrifugal fan, extends upwards and is configured to convey airflow discharged by the centrifugal fan to the freezing chamber and/or the temperature-changing chamber and/or the refrigerating chamber.
10. The air-cooled refrigerator of claim 1, wherein the air-cooled refrigerator is a refrigerator that uses air as a cooling medium
The return air pipe is a flat square pipe and is attached to the bottom liner and the upper liners by utilizing one side of the wider side.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832824.0A CN114076450B (en) | 2020-08-18 | 2020-08-18 | Air-cooled refrigerator |
| EP21857476.2A EP4174410A4 (en) | 2020-08-18 | 2021-07-29 | Air-cooled refrigerator |
| PCT/CN2021/109162 WO2022037381A1 (en) | 2020-08-18 | 2021-07-29 | Air-cooled refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832824.0A CN114076450B (en) | 2020-08-18 | 2020-08-18 | Air-cooled refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114076450A true CN114076450A (en) | 2022-02-22 |
| CN114076450B CN114076450B (en) | 2023-03-17 |
Family
ID=80281327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010832824.0A Active CN114076450B (en) | 2020-08-18 | 2020-08-18 | Air-cooled refrigerator |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4174410A4 (en) |
| CN (1) | CN114076450B (en) |
| WO (1) | WO2022037381A1 (en) |
Citations (6)
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|---|---|---|---|---|
| CN202547235U (en) * | 2012-03-16 | 2012-11-21 | 海尔集团公司 | Return air duct and refrigerator with same |
| CN105091457A (en) * | 2015-07-31 | 2015-11-25 | 合肥美的电冰箱有限公司 | Air cooling refrigerator and control method and control system thereof |
| JP2019045096A (en) * | 2017-09-05 | 2019-03-22 | アクア株式会社 | refrigerator |
| CN209027173U (en) * | 2018-08-29 | 2019-06-25 | 博西华电器（江苏）有限公司 | Refrigerator |
| CN109990529A (en) * | 2017-12-29 | 2019-07-09 | 青岛海尔股份有限公司 | Refrigerator |
| CN210220343U (en) * | 2019-02-26 | 2020-03-31 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
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| US5678421A (en) * | 1995-12-26 | 1997-10-21 | Habco Beverage Systems Inc. | Refrigeration unit for cold space merchandiser |
| JP2005233525A (en) * | 2004-02-20 | 2005-09-02 | Sharp Corp | Refrigerator |
| CN106288606A (en) * | 2016-08-17 | 2017-01-04 | 合肥华凌股份有限公司 | A kind of refrigerator air-return duct integrated structure and refrigerator |
| CN110285629B (en) * | 2018-04-13 | 2024-06-11 | 海尔智家股份有限公司 | Refrigerator with cooling chamber at lower part of inner side of freezing inner container |
| CN109373674B (en) * | 2018-11-05 | 2022-01-25 | 海尔智家股份有限公司 | Refrigerator with a door |
| CN111207558B (en) * | 2020-01-10 | 2021-09-14 | 长虹美菱股份有限公司 | Air duct structure for three-chamber single-system refrigerator |
-
2020
- 2020-08-18 CN CN202010832824.0A patent/CN114076450B/en active Active
-
2021
- 2021-07-29 EP EP21857476.2A patent/EP4174410A4/en active Pending
- 2021-07-29 WO PCT/CN2021/109162 patent/WO2022037381A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202547235U (en) * | 2012-03-16 | 2012-11-21 | 海尔集团公司 | Return air duct and refrigerator with same |
| CN105091457A (en) * | 2015-07-31 | 2015-11-25 | 合肥美的电冰箱有限公司 | Air cooling refrigerator and control method and control system thereof |
| JP2019045096A (en) * | 2017-09-05 | 2019-03-22 | アクア株式会社 | refrigerator |
| CN109990529A (en) * | 2017-12-29 | 2019-07-09 | 青岛海尔股份有限公司 | Refrigerator |
| CN209027173U (en) * | 2018-08-29 | 2019-06-25 | 博西华电器（江苏）有限公司 | Refrigerator |
| CN210220343U (en) * | 2019-02-26 | 2020-03-31 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022037381A1 (en) | 2022-02-24 |
| EP4174410A1 (en) | 2023-05-03 |
| CN114076450B (en) | 2023-03-17 |
| EP4174410A4 (en) | 2023-11-22 |
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