CN111520959B - Air duct structure and air-cooled refrigerator with same - Google Patents
Air duct structure and air-cooled refrigerator with same Download PDFInfo
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- CN111520959B CN111520959B CN202010203364.5A CN202010203364A CN111520959B CN 111520959 B CN111520959 B CN 111520959B CN 202010203364 A CN202010203364 A CN 202010203364A CN 111520959 B CN111520959 B CN 111520959B
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- 238000001816 cooling Methods 0.000 claims abstract description 59
- 238000007710 freezing Methods 0.000 claims description 15
- 230000008014 freezing Effects 0.000 claims description 15
- 238000009826 distribution Methods 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 description 20
- 238000013461 design Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 235000013305 food Nutrition 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005187 foaming Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940109850 royal jelly Drugs 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- 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
- F25D17/08—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 using ducts
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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
- F25D27/00—Lighting arrangements
-
- 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
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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
- F25D2317/067—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 air ducts
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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 duct structure, which is used for providing cold air for a cooling chamber of cooling equipment and comprises a main air duct, a main air chamber and a sub-air duct; the main air duct is used for providing total cold air for the cooling chamber; the main air chamber is formed at the tail end of the main air duct or connected to an air outlet of the main air duct and used for distributing the total cold air to each sub air duct; the sub-air channel is connected to the air outlet side of the main air chamber and used for independently sending out the total cooling air flowing into the main air chamber to the cooling chamber in different directions, and the problem that in the prior art, the air quantity of an air channel structure of a traditional refrigerator is freely distributed, the distribution of air and the air quantity of each layer are difficult to control, and therefore the temperature uniformity is difficult to guarantee is solved.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to an air duct structure and an air-cooled refrigerator with the same.
Background
Traditional refrigerator cold wind blows in back wind channel air intake by the below fan, blows in wind channel about the back again at random, blows in the chamber via the air outlet that opens every layer of correspondence of chamber that has on the wind channel of back again, and the whole process is difficult to control each air outlet amount of wind to perpendicular and horizontal temperature homogeneity is difficult to guarantee, and the temperature difference is great. The uniformity of the temperature in the refrigerator is poor, the temperature difference can reach 9 ℃, and the storage of food is not facilitated; the space of the refrigerating chamber is large, the set temperature is 2-5 ℃ generally, and the temperature difference of a few degrees can directly influence the fresh-keeping period of food.
In order to solve the problems, in the prior art, the area of the air outlet arranged on the layer with higher temperature of the refrigerating chamber is larger, the scheme has the advantages of simple structure and easiness in implementation, but the air quantity in the scheme is uncontrollable, even if the same layer has the problem of uneven temperature caused by different air quantities of the left air outlet and the right air outlet, the air outlets directly and intensively blow unevenly, and the region with higher local temperature and not blown by cold air exists in the chamber. Therefore, a new technical scheme is urgently needed to solve the problems that the food preservation period is influenced and the user experience is reduced due to poor temperature uniformity in the refrigerating chamber.
Disclosure of Invention
In view of the above, the invention provides an air duct structure and an air-cooled refrigerator with the same, and the air duct structure is arranged to solve the problems that the air volume of the traditional refrigerator air duct structure is freely distributed, the distribution of air and the air volume of each layer are difficult to control, and the temperature uniformity is difficult to guarantee.
In order to achieve the above object, the invention adopts the following technical scheme: an air duct structure is used for providing cold air for a cooling chamber of cooling equipment, and comprises a main air duct, a main air chamber and a sub air duct; the main air duct is used for providing total cold air for the cooling chamber; the main air chamber is formed at the tail end of the main air duct or connected to an air outlet of the main air duct and used for distributing the total cold air to each sub air duct; and the sub-air duct is connected to the air outlet side of the main air chamber and is used for independently sending out the total cooling air flowing into the main air chamber to the cooling chamber in different directions so as to realize uniform temperature in the cooling chamber.
Further optionally, the cooling compartment is enclosed by a door and a plurality of walls including at least a top wall, a bottom wall, a left side wall, a right side wall, and a rear wall to form a storage space, and the sub-duct at least includes: the first sub-air duct extends upwards to the top wall along the rear wall to realize air supply of the top wall; the second sub air duct extends to the left side wall along the left side of the rear wall to realize air supply of the rear wall and the left side wall; and the third sub-air duct extends to the right side wall along the right side of the rear wall to realize air supply of the rear wall and the right side wall. The design of this wind channel mechanism makes the air intake of a plurality of sub-wind channels have nearly equal air inlet pressure, compares traditional air supply step by step and arrives the air supply terminal air supply pressure less prior art more and less and is favorable to realizing the even of air supply.
Further optionally, the cooling chamber is a refrigerating chamber, the cooling device is further provided with a freezing chamber below a bottom wall of the cooling chamber, a rear wall of the freezing chamber forms at least part of the main air duct, and the main air chamber is arranged at an end side where the rear wall of the cooling chamber is connected with the bottom wall or at an end side where the rear wall of the freezing chamber is connected with the bottom wall; reduce wind channel structure occupation space, optimize the product structure.
Further optionally, the second sub-air duct and the third sub-air duct are oppositely arranged at the left side and the right side of the first sub-air duct, and form one-to-one corresponding air supply units at different layer heights of the left side wall and the right side wall; the scheme can efficiently realize uniform temperature of each layer in the cooling chamber.
Further optionally, the first sub-duct forms, on the top wall of the cooling compartment, fourth air supply units distributed in the depth direction of the storage space; the second sub-air duct forms a fifth air supply unit distributed towards the left side wall on the rear wall of the cooling compartment; and the third sub-air duct forms a sixth air supply unit distributed towards the direction of the right side wall on the rear wall of the cooling chamber.
Further optionally, the fourth air supply unit includes a plurality of fourth air supply holes, the fifth air supply unit includes a plurality of fifth air supply holes, and the sixth air supply unit includes a plurality of sixth air supply holes, where the fourth air supply hole, the fifth air supply hole, and the sixth air supply hole all supply air through micro holes, the diameter of the fourth air supply hole is greater than that of the fifth air supply hole, and the diameter of the fifth air supply hole is equal to that of the sixth air supply hole.
Further optionally, a lighting device is disposed on a top wall of the cooling chamber, at least two of the first sub-air ducts are disposed on left and right sides of the lighting device, and correspondingly, the first sub-air ducts are respectively provided with the fourth air supply units.
Further optionally, the lighting device protrudes from the top wall of the cooling chamber, and a pair of protruding ridges extending along the depth direction of the storage space of the cooling chamber are arranged on two sides of the lighting device, and the fourth air supply unit is located on the pair of protruding ridges, wherein each protruding ridge of the pair of protruding ridges comprises three air supply surfaces, and the three air supply surfaces form at least one seventh air supply hole supplying air towards the door body direction, a plurality of eighth air supply holes supplying air towards the storage space, and a plurality of ninth air supply holes supplying wall-attached flow towards the top wall surface of the cooling chamber.
Further optionally, the seventh air supply hole, the eighth air supply hole, and the ninth air supply hole are all configured to supply air through micropores, a diameter of the seventh air supply hole is larger than a diameter of the ninth air supply hole, and a diameter of the ninth air supply hole is larger than a diameter of the eighth air supply hole.
Further optionally, the inner wall of the air duct of the main air duct and/or the inner wall of the sub air duct of the air duct structure is provided with a drag reduction structure, and the drag reduction structure comprises a groove structure and/or a pit structure formed on the inner wall of the air duct along the air flowing direction; the design can reduce the wind resistance in the air supply process of the air duct structure.
Further optionally, an air door is arranged at the air inlet of each sub-air duct, a fan is arranged in the main air chamber, a plurality of temperature sensing devices are arranged in the cooling chamber, and the temperature sensing devices are used for sensing the temperature between shelf layers in the cooling chamber so as to control the operation of the fan and/or the air door; the efficiency of this wind channel realization cooling room indoor temperature is even is improved.
The invention also provides an air-cooled refrigerator which is provided with any one of the air duct structures.
The air duct structure provided by the invention solves the problem of uneven temperature in the cooling chamber, and also solves the problems of large occupied space of the back air duct and refrigerator volume occupation; meanwhile, the design of the surface of the air duct structure solves the problems of large air supply resistance and large cold loss of the existing air duct.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.
FIG. 1 is a perspective view of a front view of an air duct structure of an air-cooled refrigerator according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a portion A of FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a perspective view of a left side view of an air-cooled refrigerator in accordance with an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the structure at B in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a perspective view of a rear view of the air duct structure of the air-cooled refrigerator in accordance with an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a sub-tunnel in a tunnel structure according to an embodiment of the invention;
FIG. 7 is a cross-sectional view of a sub-tunnel in a tunnel structure according to an embodiment of the invention;
FIG. 8 is a perspective view of a top view of the air duct structure of the air-cooled refrigerator in an embodiment of the present invention;
in the figure:
1-a refrigerating chamber; 2-a freezing chamber; 3-a main air chamber; 4-a first sub-duct; 41-a fourth air supply unit; 5-a second sub-air duct; 51-a fifth air supply unit; 6-a third sub-air duct; 61-a sixth air supply unit; 7-a first air supply unit; 8-a second air supply unit; 9-a third air supply unit; 10-a lighting device; 11-a foamed layer; 12-the rear wall of the refrigeration compartment; 13-a damper; 14-a fan; 15-temperature sensing means; 16-a seventh blow hole; 17-an eighth blow hole; 18-ninth air supply hole
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms "a", "an", and "the" as used in the embodiments of the present invention and the appended claims are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a" and "an" generally include at least two, but do not exclude the inclusion of at least one.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in a commodity or system that comprises the element.
The invention provides an air duct structure and an air-cooled refrigerator with the same, wherein the air duct structure is used for providing cold air for a cooling chamber of cooling equipment, and specifically comprises a main air duct, a main air chamber and a sub air duct, wherein: the main air duct is used for providing total cold air for the cooling chamber; the main air chamber is formed at the tail end of the main air duct or connected to an air outlet of the main air duct and used for distributing the total cold air to each sub air duct; the main air duct and the sub air ducts are opposite concepts, and only relative to the cooling chamber, the design of the air duct structure realizes uniform temperature of each layer of the storage space of the cooling chamber, and solves the problems that the traditional refrigerator air duct is arranged at the rear part of the refrigerating chamber, air is blown into the air duct by a fan below the traditional refrigerator air duct in the prior art and then blown out from air outlets corresponding to each layer at two sides of the air duct, the air volume is freely distributed, the distribution of the air is difficult to control, the air volume of each layer and the temperature uniformity is difficult to ensure. In order to better understand the technical solution of the present invention, the following examples are given.
Examples
As shown in fig. 1 to 8, the present embodiment provides an air-cooled refrigerator, which has a refrigerating chamber 1 and a freezing chamber 2, and the refrigerating chamber 1 has an air duct structure for providing cold air into the refrigerating chamber 1, and the air duct structure includes a main air duct, a main air chamber 3, sub air ducts, and a main air duct for providing total cold air into the refrigerating chamber 1; the main air chamber 3 is formed at the tail end of the main air duct or connected to an air outlet of the main air duct and used for distributing the total cold air to each sub air duct; the sub-duct is connected to the air outlet side of the main air compartment 3 for independently sending the total cooling air flowing into the main air compartment 3 to the refrigerating compartment 1 in different directions.
The refrigerating chamber 1 of the air-cooled refrigerator in the embodiment has the air duct structure, so that each sub-air duct inlet has the same air inlet pressure, cold air is sent into the refrigerating chamber 1 from different directions, the temperature of each layer in the chamber is kept uniform, and compared with the traditional technology that the air supply pressure is smaller when the air supply is gradually carried out, the air supply uniformity is favorably realized.
As shown in fig. 5, in the present embodiment, preferably, the air-cooled refrigerator is further provided with a freezing chamber 2 below the bottom wall of the refrigerating chamber 1, the rear wall of the freezing chamber 2 forms at least part of the main air duct, and the main air chamber 3 is arranged at the end side of the rear wall 12 of the refrigerating chamber connected with the bottom wall or at the end side of the rear wall of the freezing chamber 2 connected with the bottom wall.
In order to better realize that the main air duct distributes air uniformly to each sub-air duct and finally realize the effect of uniform temperature in the storage space of the refrigerating chamber 1, preferably, the refrigerating chamber 1 is surrounded by a door body and a plurality of walls at least comprising a top wall, a bottom wall, a left side wall, a right side wall and a rear wall to form the storage space, the door body of the refrigerating chamber 1 can be an independent door or a door shared by other chambers, and the refrigerating chamber 1 in the embodiment preferably has the independent door body; the sub-duct of the refrigerating chamber 1 at least includes: a first sub-air duct 4 extending upwards to the top wall along the rear wall to realize air supply of the top wall; a second sub-air duct 5 extending to the left side wall along the left side of the rear wall to realize air supply of the rear wall and the left side wall; and the third sub-air duct 6 extends to the right side wall along the rear wall towards the right side, and realizes air supply of the rear wall and the right side wall. The main veins of the royal jelly leaf vein structure is imitated by the communication mode of the sub-air duct and the main air duct of the air duct structure from the leaf stalk to the outside, so that the air inlet outlet of the sub-air duct has nearly equal air inlet pressure, and the effect of uniform air supply is realized.
In the air duct structure of the refrigeration chamber 1 in this embodiment, preferably, the second sub air duct 5 and the third sub air duct 6 are oppositely arranged on the left side and the right side of the first sub air duct 4, and form one-to-one corresponding air supply units at different layer heights of the left side wall and the right side wall, so that layered distribution can be more efficiently realized, and an effect of uniform temperature is achieved; preferably, the sub-air ducts are symmetrically distributed relative to the central axis plane of the refrigerator and are uniformly distributed on the rear wall, the top wall, the left side wall and the right side wall in the refrigerating chamber 1, so that the uniform distribution efficiency is improved.
As shown in fig. 3 and 8, in order to reduce the occupied space of the air duct structure of the air-cooled refrigerator in the refrigerating chamber 1 and increase the storage space of the refrigerating chamber 1 of the air-cooled refrigerator, preferably, a plurality of convex edge pairs extending along the depth direction of the storage space are formed at different heights of the storage space of the refrigerating chamber 1 on the left and right side walls, a rack for supporting the storage space is arranged on each convex edge pair, each convex edge of the convex edge pair comprises three air supply surfaces, and the three air supply surfaces form a first air supply unit 7 for supplying air towards the door body direction, a second air supply unit 8 for supplying air towards the storage space, and a third air supply unit 9 for providing wall-attached flow towards the lower part of the rack; cold air blown out by the first distribution unit is directly blown to the door body of the refrigerating chamber 1, so that the problem of high temperature area at the door body side caused by heat leakage of the door seal of the door body can be solved, and external heat can be prevented from entering the refrigerating chamber 1; the second air supply unit 8 is directly used for improving the uniformity of the space temperature; the cold air blown out by the third air supply unit 9 forms a wall-pasting flow, and is used for solving the problem of temperature rise of the inner wall surface caused by heat leakage through the foaming layers 11 on the left side wall and the right side wall.
As shown in fig. 2 to 4, considering that a condenser is arranged on the side wall of the refrigerating chamber 1, the condenser leaks heat to the storage space of the refrigerating chamber 1, the temperature of the side wall surface of the refrigerating chamber 1 can be reduced by increasing the wall flow, and considering that the problem that the storage space of the refrigerating chamber 1 is directly blown with a large aperture causes the food water stored in the storage space to be lost, the aperture, i.e. the diameter, of each air blowing hole is limited, preferably, the first air blowing unit 7 is composed of at least one first air blowing hole, the second air blowing unit 8 is composed of a plurality of second air blowing holes, and the third air blowing unit 9 is composed of a plurality of third air blowing holes; the first air supply hole, the second air supply hole and the third air supply hole are all used for supplying air through micropores, the aperture of the first air supply hole is larger than that of the third air supply hole, and the aperture of the third air supply hole is larger than that of the second air supply hole. Preferably, the first air supply holes are distributed uniformly. In order to realize better air supply effect, preferably, the aperture of the first air supply holes is 5mm-6mm, and the distance between the first air supply holes is 2 mm; the aperture of the second air supply holes is 2mm-3mm, the distance between the second air supply holes is 2mm-3mm, the second air supply holes are distributed along the rear wall 12 of the refrigerating chamber towards the door body, the aperture diameter of the holes is gradually increased, and the distance between the holes is gradually reduced; the aperture of the third air supply holes is 3mm-4mm, the distance between the third air supply holes is 2mm-3mm, the third air supply holes are distributed along the rear wall 12 of the refrigerating chamber towards the door body, the aperture of the holes is gradually increased, and the distance between the holes is gradually reduced. Further preferably, the aperture of the first air supply hole is 5 mm; the aperture of the second air supply hole closest to the rear wall 12 of the refrigerating chamber is 2mm, the aperture of the second air supply hole along the door body direction of the refrigerating chamber 1 is gradually increased, the aperture of the second air supply hole closest to the door body of the refrigerating chamber 1 is 3mm, and meanwhile, the distance between the second air supply holes is gradually reduced from 3mm to 2 mm; the aperture of the third air supply hole closest to the rear wall 12 of the refrigerating chamber is 3mm, the aperture of the third air supply hole along the door body direction of the refrigerating chamber 1 is gradually increased, and the aperture of the third air supply hole closest to the door body of the refrigerating chamber 1 is 4 mm; meanwhile, the distance between the third air supply holes is gradually reduced from 3mm to 2 mm.
As shown in fig. 1 and 5, in consideration of the influence of heat leakage from the rear wall 12 of the refrigerating chamber on the temperature in the storage space of the refrigerating chamber 1, it is preferable that the first sub-duct 4 has a fourth blowing unit 41 distributed in the depth direction of the storage space formed on the top wall of the refrigerating chamber 1; the second sub-duct 5 forms a fifth blowing unit 51 distributed toward the left side wall on the rear wall of the refrigerating chamber 1; the third sub-duct 6 forms a sixth blowing unit 61 distributed toward the right side wall on the rear wall of the refrigerating compartment 1. In order to improve the air supply effect of the air duct, it is further preferable that the fourth air supply unit 41 is composed of a plurality of fourth air supply holes, the fifth air supply unit 51 is composed of a plurality of fifth air supply holes, and the sixth air supply unit 61 is composed of a plurality of sixth air supply holes, wherein the fourth air supply holes, the fifth air supply holes and the sixth air supply holes are all used for supplying air through micropores, the aperture of the fourth air supply holes is larger than that of the fifth air supply holes, and the aperture of the fifth air supply holes is equal to that of the sixth air supply holes, and the design scheme that the air supply holes are of a micropore structure can reduce the water loss in the storage space of the refrigerating room 1 while improving the temperature uniformity.
Preferably, the diameter of the fourth air supply holes is 3mm-4mm, the distance between the fourth air supply holes is 2mm-3mm, the fourth air supply holes are distributed along the rear wall 12 of the refrigerating chamber towards the door body, the hole diameter is gradually increased, and the hole distance is gradually reduced; the aperture of the fifth air supply hole and the aperture of the sixth air supply hole are 1-2mm, the distance between the fifth air supply holes is 3-4 mm, the distance between the sixth air supply holes is 3-4 mm, the aperture of the fifth air supply hole and the aperture of the sixth air supply hole are gradually increased along the direction towards the left side wall and the right side wall, the distance between the holes is gradually reduced, and the front section air inlet resistance generated by gradual reduction of the air speed due to the fact that cold air flows along the air channel and loss along the way is reduced.
As shown in fig. 8, the volume of the storage space of the refrigerating chamber 1 is increased, and preferably, the lighting device 10 is disposed on the top wall of the refrigerating chamber 1, and at least two air blowing units 41 are disposed on the first sub-duct 4 and distributed on the left and right sides of the lighting device 10, respectively.
As shown in fig. 1 and 8, it is further preferable that the lighting device 10 protrudes from the top wall of the refrigerating compartment 1, and a pair of protruding ridges extending along the depth direction of the storage space of the refrigerating compartment 1 is disposed on both sides of the lighting device 10, and the fourth air supply unit 41 is disposed on the pair of protruding ridges, wherein each protruding ridge of the pair of protruding ridges includes three air supply surfaces, and the three air supply surfaces form at least one seventh air supply hole 16 for supplying air toward the door body, a plurality of eighth air supply holes 17 for supplying air toward the storage space, and a plurality of ninth air supply holes 18 for providing wall flow toward the top wall surface of the refrigerating compartment 1; the cold air blown out from the seventh air supply hole 16 directly blows the door body of the refrigerating chamber 1, and is used for solving the problem of a door-side high-temperature area caused by heat leakage from the door body door seal and preventing external heat from entering the refrigerating chamber 1; the eighth air supply hole 17 directly blows cold air into the refrigerating chamber 1 for improving the uniformity of the space temperature; the cold air blown out from the ninth supply hole 18 forms a wall-sticking flow for solving the problem of temperature rise of the inner wall surface of the top wall caused by heat leakage through the foaming layer 11.
In order to improve the air blowing effect, not only to make the temperature in the refrigerating compartment 1 uniform, but also to solve the problem of loss of moisture in the food in the storage space of the refrigerating compartment 1, it is preferable that the seventh air blowing hole 16, the eighth air blowing hole 17, and the ninth air blowing hole 18 are all blowing air through micropores, the diameter of the seventh air blowing hole 16 is larger than that of the ninth air blowing hole 18, and the diameter of the ninth air blowing hole 18 is larger than that of the eighth air blowing hole 17. Preferably, the seventh blow holes 16 are plural and uniformly distributed. More preferably, the aperture of the seventh air supply hole 16 is 5mm-6mm, and the distance between the seventh air supply holes 16 is 2 mm; the aperture of the eighth air supply holes 17 is 2mm-3mm, the distance between the eighth air supply holes 17 is 2mm-3mm, the eighth air supply holes 17 are distributed along the rear wall 12 of the refrigerating chamber towards the door body, the aperture is gradually increased, and the distance between the holes is gradually reduced; the aperture of the ninth air supply holes 18 is 3mm-4mm, the distance between the ninth air supply holes 18 is 2mm-3mm, the ninth air supply holes 18 are distributed along the rear wall 12 of the refrigerating chamber towards the door body, the aperture is gradually increased, and the distance between the holes is gradually reduced.
As shown in fig. 6 to 7, in order to reduce the air supply resistance in the air duct structure and improve the air supply effect, it is preferable that the inner wall of the main air duct and/or the sub air duct of the air duct structure is provided with a resistance reducing structure, and the resistance reducing structure includes a groove structure formed on the inner wall of the air duct along the air flowing direction; wherein, the surface of the groove interacts with the 'reverse rotating vortex pair' along the direction of the wind flow to generate 'secondary vortex', the generation and development of the 'secondary vortex' effectively weaken the aggregation and the capability of lifting low-speed fluid upwards, the momentum exchange is correspondingly weakened, and the turbulent friction resistance is reduced. In order to achieve the above-mentioned effects, preferably, the drag reduction structure includes a pit structure formed on an inner wall of the air duct along the wind flowing direction; the airflow closest to the wall surface enters the pit to form a vortex opposite to the direction of the airflow above the pit when flowing over the pit, the vortex at the front part rises under the blocking of the pit wall, the airflow at the upper layer is lifted, the boundary layer is disturbed, the laminar flow Renuo number is increased, the height of the boundary layer is increased, the boundary layer extends farther along the surface of an object, and the resistance is reduced. In addition to this, it is preferable that the drag reduction structure includes a dimple structure or a groove structure formed on an inner wall of the air passage in the flow direction of the wind.
As shown in fig. 5, in order to better achieve the temperature uniformity of each layer in the refrigerating chamber 1, it is preferable that an air inlet of each sub-duct is provided with a damper 13, a fan 14 is provided in the main air chamber 3, a plurality of temperature sensing devices 15 are provided in the refrigerating chamber 1, and the plurality of temperature sensing devices 15 are used for sensing the temperature between each shelf layer in the refrigerating chamber 1 to control the operation of the fan 14 and/or the damper 13.
Various control methods are available for the temperature uniformity of each layer in the refrigerating chamber 1, in the embodiment, preferably, when the refrigerator is just started, the refrigerating system starts to operate, the air doors 13 at the air inlets of all the sub-air channels are opened to supply air into the refrigerating chamber 1, the temperature sensors at all layers in the refrigerating chamber 1 monitor the real-time temperature, the opening degrees of the air doors 13 at the air inlets of the back air channels are controlled accordingly, the air volume of each air channel is adjusted, and accurate temperature control is realized;
when the temperature sensing device 15 in a certain area in the refrigerating chamber 1 senses that the temperature in the area is higher than a set value, the opening degree of the air door 13 of the sub-air duct corresponding to the area is increased;
when the temperature sensing device 15 in a certain area in the refrigerating chamber 1 senses that the temperature in the area reaches a set value, the air door 13 of the sub-air duct corresponding to the area is closed;
when the temperature sensing devices 15 in all the regions in the refrigerating chamber 1 sense that the temperatures in the corresponding regions reach the set values, all the dampers 13 are closed, and the fan 14 and the refrigerating system stop operating.
Certainly, the air duct mechanism provided by the present invention is not limited to the above technical solution, when the freezing chamber 2 is further arranged above the top wall of the refrigerating chamber 1 of the air-cooled refrigerator, the rear wall of the freezing chamber 2 forms at least part of the main air duct, the main air chamber 3 is arranged at the connecting end side of the rear wall 12 and the top wall of the refrigerating chamber or at the connecting end side of the rear wall 12 and the top wall of the refrigerating chamber 1, the cold energy of the freezing chamber 2 can be guided to the top wall of the refrigerating chamber 1 by arranging a transition air duct between the refrigerating chamber 1 and the freezing chamber 2, so as to form one or more sub air ducts which extend downwards from the top wall to the rear wall and realize the simultaneous air supply of the rear wall and the top wall; extend to the left side wall along the roof left side, realize one or more sub-wind channels of left side wall air supply, extend to the right side wall to the right side along the roof, realize one or more sub-wind channels of right side wall air supply, through the overall arrangement design to above-mentioned sub-wind channel, also can realize evenly distributing, let the temperature in each space in walk-in 1 even.
In the design of the air duct structure of the refrigerating chamber of the air-cooled refrigerator provided by the embodiment, the air in the main air duct is firstly sent to the main air chamber, and the main air chamber is communicated with the plurality of sub air ducts, so that the air inlet pressure at the air inlets of the plurality of sub air ducts is the same, and compared with the technical scheme that the air supply pressure is smaller when the air is supplied to the air supply tail end step by the main air duct, the air-cooled refrigerator is more beneficial to realizing the uniformity of air supply; meanwhile, the distribution of the sub-air ducts and the aperture and the interval of the air supply holes are designed, the sub-air ducts are symmetrically distributed relative to the central axis of the refrigerator, uniform distribution is better realized, meanwhile, the air supply holes supply air for micropores, the freshness of food in the refrigerating chamber is better kept, and the loss of a large amount of water in the food is avoided; according to the temperature of each layer of the storage space of the refrigerating chamber monitored in real time by the temperature sensing device, the air door at the air inlet of the sub-air duct is adjusted to play a role in adjusting the air volume; the structural design of the inner wall of the main air duct and/or the sub-air duct in the air duct structure has the function of reducing air supply resistance, and the air supply efficiency is improved.
In summary, the present invention provides an air duct structure for providing cool air to a cooling compartment of a cooling device, the air duct structure includes a main air duct, a main air chamber, and a sub air duct; the main air duct is used for providing total cold air for the cooling chamber; the main air chamber is formed at the tail end of the main air duct or connected to an air outlet of the main air duct and used for distributing the total cold air to each sub air duct; the sub-air duct is connected to the air outlet side of the main air chamber and used for independently sending out the total cooling air flowing into the main air chamber to the cooling chamber in different directions, and the problems that in the prior art, the air quantity of an air duct structure of a traditional refrigerator is freely distributed, the distribution of air and the air quantity of each layer are difficult to control, and therefore the temperature uniformity is difficult to guarantee are solved.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An air duct structure is used for providing cold air for a cooling chamber of cooling equipment, and is characterized in that:
the air channel structure comprises a main air channel, a main air chamber (3) and a sub air channel; wherein,
the main air duct is used for providing total cold air for the cooling chamber;
the main air chamber (3) is formed at the tail end of the main air duct or connected to an air outlet of the main air duct and used for distributing the total cold air to each sub air duct;
the sub-air duct is connected to the air outlet side of the main air chamber (3) and is used for independently sending out the total cooling air flowing into the main air chamber (3) to the cooling chamber in different directions;
the cooling compartment is enclosed into a storing space by the door body and a plurality of walls including roof, diapire, left side wall, right side wall, back wall at least, sub-wind channel includes at least: a first sub-air duct (4) extending upwards to the top wall along the rear wall to realize air supply of the top wall; a second sub-air duct (5) which extends to the left side wall along the left side of the rear wall and realizes air supply of the rear wall and the left side wall; a third sub-air duct (6) which extends to the right side wall along the rear wall to the right side and realizes air supply of the rear wall and the right side wall;
the cooling chamber is a refrigerating chamber (1), the cooling equipment is also provided with a freezing chamber (2) below the bottom wall of the cooling chamber, the rear wall of the freezing chamber (2) forms at least part of the main air duct, and the main air chamber (3) is arranged at the end side of the rear wall of the cooling chamber connected with the bottom wall or at the end side of the rear wall of the freezing chamber (2) connected with the bottom wall; the second sub-air duct (5) and the third sub-air duct (6) are oppositely arranged at the left side and the right side of the first sub-air duct (4), and form air supply units in one-to-one correspondence at different layer heights of the left side wall and the right side wall;
the left side wall and the right side wall form a plurality of convex edge pairs extending along the depth direction of the storage space at different layer heights of the storage space of the cooling chamber, each convex edge pair is provided with a rack for supporting the storage space, each convex edge pair comprises three air supply surfaces, and the three air supply surfaces form a first air supply unit (7) supplying air towards the door body direction, a second air supply unit (8) supplying air towards the storage space and a third air supply unit (9) providing wall flow towards the lower part of the rack.
2. The air duct structure according to claim 1, wherein: the first air supply unit (7) consists of at least one first air supply hole, the second air supply unit (8) consists of a plurality of second air supply holes, the third air supply unit (9) consists of a plurality of third air supply holes,
the first air supply hole, the second air supply hole and the third air supply hole are all used for supplying air through micropores, the aperture of the first air supply hole is larger than that of the third air supply hole, and the aperture of the third air supply hole is larger than that of the second air supply hole.
3. The air duct structure according to claim 2, wherein: the first sub-air duct (4) forms a fourth air supply unit (41) distributed in the depth direction of the storage space on the top wall of the cooling compartment; the second sub-air duct (5) forms a fifth air supply unit (51) which is distributed towards the direction of the left side wall on the rear wall of the cooling compartment; and the third sub-air duct (6) forms a sixth air supply unit (61) distributed towards the direction of the right side wall on the rear wall of the cooling compartment.
4. The air duct structure according to claim 3, wherein: the fourth air supply unit (41) is composed of a plurality of fourth air supply holes, the fifth air supply unit (51) is composed of a plurality of fifth air supply holes, the sixth air supply unit (61) is composed of a plurality of sixth air supply holes, the fourth air supply holes, the fifth air supply holes and the sixth air supply holes are all used for supplying air through micropores, the aperture of the fourth air supply holes is larger than that of the fifth air supply holes, and the aperture of the fifth air supply holes is equal to that of the sixth air supply holes.
5. The air duct structure according to claim 4, wherein: the top wall of the cooling chamber is provided with a lighting device (10), the first sub-air duct (4) is at least provided with two air supply units (41) which are distributed on the left side and the right side of the lighting device (10), and correspondingly, the first sub-air duct (4) is respectively provided with one fourth air supply unit (41).
6. The air duct structure according to claim 5, wherein: the lighting device (10) protrudes out of the top wall of the cooling chamber, convex edge pairs extending along the depth direction of the storage space of the cooling chamber are arranged on two sides of the lighting device (10), the fourth air supply unit (41) is located on the convex edge pairs, each convex edge of each convex edge pair comprises three air supply surfaces, and the three air supply surfaces form at least one seventh air supply hole (16) supplying air towards the door body direction, a plurality of eighth air supply holes (17) supplying air towards the storage space and a plurality of ninth air supply holes (18) providing wall flow towards the top wall surface of the cooling chamber.
7. The air duct structure according to claim 6, wherein: the seventh air supply hole (16), the eighth air supply hole (17) and the ninth air supply hole (18) are all used for supplying air through micropores, the aperture of the seventh air supply hole (16) is larger than that of the ninth air supply hole (18), and the aperture of the ninth air supply hole (18) is larger than that of the eighth air supply hole (17).
8. The air duct structure according to any one of claims 1 to 7, wherein: the inner wall air duct inner wall of the main air duct and/or the sub air duct of the air duct structure is provided with a resistance reducing structure, and the resistance reducing structure comprises a groove structure and/or a pit structure which are formed on the inner wall of the air duct along the air flowing direction.
9. The air duct structure according to claim 8, wherein: each sub-air duct
The air inlet is provided with an air door (13), a fan (14) is arranged in the main air chamber (3), a plurality of temperature sensing devices (15) are arranged in the cooling chamber, and the temperature sensing devices (15) are used for sensing the temperature between shelf layers in the cooling chamber so as to control the work of the fan (14) and/or the air door (13).
10. An air-cooled refrigerator, characterized in that: the air-cooled refrigerator is provided with the air duct structure of any one of claims 1 to 9.
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| CN202010203364.5A CN111520959B (en) | 2020-03-20 | 2020-03-20 | Air duct structure and air-cooled refrigerator with same |
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| CN111520959B true CN111520959B (en) | 2021-07-23 |
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| CN116294359A (en) * | 2023-03-22 | 2023-06-23 | 山东青果食品有限公司 | Air-cooled sterilization control device for vegetable packaging room |
| CN119545768A (en) * | 2025-01-23 | 2025-02-28 | 双一力(宁波)电池有限公司 | Lattice cell structure, lattice radiator and energy storage device |
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