CN216409427U - Air-cooled refrigerator - Google Patents
Air-cooled refrigerator Download PDFInfo
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- CN216409427U CN216409427U CN202122444971.3U CN202122444971U CN216409427U CN 216409427 U CN216409427 U CN 216409427U CN 202122444971 U CN202122444971 U CN 202122444971U CN 216409427 U CN216409427 U CN 216409427U
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- 238000010257 thawing Methods 0.000 claims abstract description 80
- 238000005057 refrigeration Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 15
- 239000003570 air Substances 0.000 description 186
- 238000004891 communication Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- -1 bacterial colonies Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the technical field of refrigeration equipment, and particularly provides an air-cooled refrigerator. The utility model aims to solve the problem that the defrosting efficiency is lower when an evaporator is defrosted in the conventional air-cooled refrigerator. To this end, the air-cooled refrigerator of the present invention includes a refrigerator body, an evaporator, a blower fan, and a damper assembly. The refrigerator body is limited with a refrigerating chamber, a storage chamber, a refrigerating air channel, an air return channel and a defrosting air channel, and the refrigerating chamber, the refrigerating air channel, the storage chamber and the air return channel are sequentially communicated end to form a refrigerating circulation air path; two ends of the defrosting air channel are respectively communicated with the refrigerating chamber to form a defrosting circulation air path; the evaporator is arranged in the refrigerating chamber and is positioned between the two ends of the defrosting air channel; the air door assembly is used for enabling air driven by the fan to flow to the storeroom and circulate in the refrigerating circulation air path, and enabling air driven by the fan to flow through the defrosting air channel and circulate in the defrosting circulation air path. The utility model improves the defrosting effect of the evaporator.
Description
Technical Field
The utility model belongs to the technical field of refrigeration equipment, and particularly provides an air-cooled refrigerator.
Background
The air-cooled refrigerator is provided with a refrigerating chamber, a refrigerating air duct, a storage chamber and an air return channel which are sequentially communicated. The air-cooled refrigerator also has an evaporator disposed in the refrigerating chamber to cool air in the refrigerating chamber, and a fan. The fan is used for driving air to circularly flow along paths of the refrigerating chamber, the refrigerating air duct, the storage chamber and the return air channel so as to convey air cooled by the evaporator in the refrigerating chamber into the storage chamber and cool stored objects (including food materials, medicines, wine, biological reagents, bacterial colonies, chemical reagents and the like) in the storage chamber.
The stored objects in the storage chamber often comprise food materials with high moisture content, and moisture in the outside can enter the storage chamber, so that the humidity in the storage chamber is high, and the moisture can form frost attached to the evaporator when the evaporator is cooled. When the amount of frost on the evaporator is large, the cooling effect of the evaporator on the ambient air is affected, and therefore, the evaporator needs to be periodically defrosted.
In the prior art, the fan is usually stopped, and then the evaporator is heated, so that the heat is gradually distributed to the whole evaporator, and then the evaporator melts away the frost thereon. The defrosting mode has low defrosting efficiency, and hot air in the refrigerating chamber and/or the refrigerating air duct easily enters the storage chamber to influence the freezing, refrigerating and fresh-keeping effects of the storage chamber.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve the problem of low defrosting efficiency when an evaporator is defrosted in the conventional air-cooled refrigerator.
To achieve the above object, the present invention provides an air-cooled refrigerator comprising:
the refrigerator comprises a refrigerator body, a refrigerating chamber, a storage chamber, a refrigerating air channel, an air return channel and a defrosting air channel, wherein the refrigerating chamber, the refrigerating air channel, the storage chamber and the air return channel are sequentially communicated end to form a refrigerating circulation air path; two ends of the defrosting air channel are respectively communicated with the refrigerating chamber to form a defrosting circulation air path;
an evaporator disposed within the refrigeration compartment and located between the ends of the defrost duct;
a fan;
a damper assembly for causing the fan-driven air to flow toward the storage chamber and to circulate in the refrigeration cycle air passage, and for causing the fan-driven air to flow through the defrost air passage and to circulate in the defrost cycle air passage.
Optionally, the damper assembly includes a first damper and a second damper, the first damper being opened to allow the air driven by the fan to flow to the storage compartment and circulate in the refrigeration cycle air path, and the first damper being closed to prevent the air driven by the fan from flowing to the storage compartment; the second air door which is opened enables the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting circulation air channel, and the second air door which is closed does not allow the air driven by the fan to flow through the defrosting air channel.
Optionally, the first damper is disposed at one end of the cooling air duct close to the fan; or the first air door is arranged in the cooling air duct.
Optionally, the second damper is arranged at one end of the defrosting air duct close to the fan; or the second air door is arranged at one end of the defrosting air channel far away from the fan; or the second air door is arranged in the defrosting air channel.
Optionally, the damper assembly includes a third damper in a first position for allowing air driven by the fan to flow toward the storage compartment and circulate in the refrigeration cycle air path; and the third air door at the second position enables the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting circulation air channel.
Optionally, the third damper is disposed at one end of the cooling air duct close to the fan; and/or the third damper is a rotary damper.
Optionally, the fan is disposed above the evaporator; and/or, the refrigerator body is limited with two refrigeration air ducts and one defrosting air duct, and the defrosting air duct is positioned between the two refrigeration air ducts.
Optionally, the refrigerator body includes an air duct cover plate, and the refrigeration air duct and the defrosting air duct are both formed on the air duct cover plate.
Optionally, the air-cooled refrigerator further includes a heating device disposed at a bottom side of the evaporator.
Optionally, the fan is a centrifugal fan.
Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, the air-cooled refrigerator is provided with the defrosting air duct, two ends of which are respectively communicated with the refrigeration chamber, and two ends of the defrosting air duct are respectively located at two sides of the evaporator, so that the refrigeration chamber and the defrosting air duct can form a defrosting circulation air path, and further, air driven by the fan can circulate in the defrosting circulation air path. Therefore, when the air-cooled refrigerator of the present invention defrosts the evaporator, the fan drives the air to continuously blow the evaporator through the defrosting circulation air path, so that each part of the evaporator is uniformly heated, and compared with the method that the evaporator transfers heat to the whole body through self heat transfer, the evaporator can uniformly and rapidly heat, thereby rapidly removing frost on the evaporator, and further improving the defrosting effect of the evaporator. Meanwhile, flowing air can promote frost and frost-water mixture to separate from the evaporator, and the defrosting effect of the evaporator is further improved.
Further, the closed first air door does not allow the air driven by the fan to flow to the storage chamber by allowing the air driven by the fan to flow to the storage chamber and circulating in the refrigeration circulation air path; and the second air door which is opened allows the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting circulation air channel, so that the second air door which is closed does not allow the air driven by the fan to flow through the defrosting air channel, the air-cooled refrigerator can only make the air circularly flow in the refrigerating circulation air channel or the defrosting circulation air channel through the combination of the first air door and the second air door, and the defrosting effect of the evaporator is improved while the normal refrigerating function of the air-cooled refrigerator is not influenced.
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
In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number identified in different figures are the same or similar; the drawings of the utility model are not necessarily to scale relative to each other. In the drawings:
FIG. 1 is a schematic view of an air-cooled refrigerator (cooling mode) according to some embodiments of the present invention;
FIG. 2 is a schematic view of the principle of an air-cooled refrigerator (defrost mode) in some embodiments of the utility model;
FIG. 3 is a schematic view of a first axial effect of a portion of an air duct cover in some embodiments of the utility model;
FIG. 4 is a schematic representation of a second axial effect of a portion of an air duct cover in some embodiments of the utility model;
FIG. 5 is a sectional view taken along the line A-A in FIG. 4;
FIG. 6 is a schematic illustration of the effect of the damper assembly (cooling mode) in other embodiments of the present invention;
FIG. 7 is a schematic illustration of the effect of the damper assembly (defrost mode) in other embodiments of the present invention.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, not all of the embodiments of the present invention, and the part of the embodiments are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments provided by the present invention without inventive effort, shall still fall within the scope of protection of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The air-cooling type refrigerator of the present invention will be described in detail with reference to fig. 1 to 5. Fig. 1 is a schematic view of an air-cooled refrigerator according to some embodiments of the present invention (a cooling mode), fig. 2 is a schematic view of an air-cooled refrigerator according to some embodiments of the present invention (a defrosting mode), fig. 3 is a schematic view of a first axial effect of a cover portion of an air duct according to some embodiments of the present invention, fig. 4 is a schematic view of a second axial effect of the cover portion of the air duct according to some embodiments of the present invention, and fig. 5 is a sectional view taken along a direction a-a in fig. 4.
It should be noted that, for convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present invention, only the technical features that are strongly related (directly related or indirectly related) to the technical problem and/or the technical concept to be solved by the present invention will be described later, and no detailed description will be given to the technical features that are weakly related to the technical problem and/or the technical concept to be solved by the present invention. Since the technical features with the weak degree of association belong to the common general knowledge in the field, the present invention does not cause insufficient disclosure of the present invention even if the features with the weak degree of association are not described.
As shown in fig. 1 and 2, in some embodiments of the present invention, an air-cooled refrigerator includes a refrigerator body 1, an evaporator 2, a blower fan 3, a damper assembly 4, and a heating device 5.
With continued reference to fig. 1 and 2, the refrigerator body 1 defines a cooling compartment 101, a storage compartment 102, a cooling air duct 103, a return air duct 104, and a defrosting air duct 105. The refrigeration chamber 101, the refrigeration air duct 103, the storage chamber 102 and the return air duct 104 are sequentially communicated end to end, and thus a refrigeration cycle air path is formed. Both ends of the defrosting air duct 105 communicate with the cooling compartment 101, respectively, and thus form a defrosting circulation air path.
As shown in fig. 1, when the air-cooled refrigerator operates in the cooling mode, air circulates in the cooling circulation air passage through the following paths: the refrigerating compartment 101 → the refrigerating duct 103 → the storage compartment 102 → the return air duct 104 → the refrigerating compartment 101.
As shown in fig. 2, when the air-cooled refrigerator operates in the defrosting mode, air circulates in the defrosting circulation air passage, and the air flow path is as follows: refrigeration compartment 101 → defrost duct 105 → refrigeration compartment 101.
With continued reference to fig. 1 and 2, the refrigerator body 1 includes an air duct cover 110, and the cooling air duct 103 and the defrosting air duct 105 are formed on the air duct cover 110.
As shown in fig. 1 to 5, the first outlet 1031 of the cooling air duct 103 is disposed at the front side of the air duct cover 110, so that the cooling air duct 103 blows cold air into the storage chamber 102 through the first outlet 1031. The second air outlet 1051 of the defrosting air duct 105 is disposed at the rear side of the air duct cover 110, so that the defrosting air duct 105 delivers the air therein to the cooling compartment 101 through the second air outlet 1051.
As shown in fig. 5, in some embodiments of the present invention, there are two cooling air ducts 103, one defrosting air duct 105, and the defrosting air duct 105 is located between the two cooling air ducts 103, so that the flow cross-sectional area of the cooling air duct 103 is as large as possible, so as to reduce the resistance of the cooling air duct 103 to air.
As shown in fig. 1 and 2, the evaporator 2 is disposed in the cooling compartment 101, and the evaporator 2 is located between both ends of the defrosting air duct 105, so that the air flowing out of the second outlet 1051 flows toward the evaporator 2 to blow the evaporator 2. The fan 3 is provided above the evaporator 2 and drives air to flow in the refrigeration cycle air passage or the defrost cycle air passage. The damper assembly 4 is used to selectively flow air driven by the fan 3 to the storage chamber 102 or the defrost duct 105 to circulate the air in the cooling circulation duct or the defrost circulation duct. A heating device 5 is provided at the bottom side of the evaporator 2 for heating the evaporator 2.
The fan 3 may be any feasible fan, such as a centrifugal fan, an axial flow fan, a cross flow fan, and the like. In some embodiments of the utility model, the fan 3 is preferably a centrifugal fan. Further, the fan 3 may be disposed below the evaporator 2 as needed by those skilled in the art.
Wherein the heating means 5 are preferably electric heating means. Furthermore, the skilled person may also arrange the heating device 5 as any other feasible heating device, such as a condenser arranged at the bottom side of the evaporator 2, or use a part or all of the evaporator 2 as a condenser during defrosting of the evaporator 2, as desired.
As shown in fig. 1 and 2, the damper assembly 4 includes a first damper 41 and a second damper 42 mounted to the duct cover 110. The first damper 41 is used to control whether or not air circulates in the cooling circulation air passage as shown in fig. 1, and the second damper 42 is used to control whether or not air circulates in the defrosting circulation air passage as shown in fig. 2. Specifically, the opened first damper 41 causes the air driven by the fan 3 to flow toward the storage chamber 102 and circulate in the cooling circulation air passage, and the closed first damper 41 does not allow the air driven by the fan 3 to flow toward the storage chamber 102. The second damper 42 that is opened allows the air driven by the fan 3 to flow through the defroster air duct 105 and circulate in the defroster circulation air path, and the second damper 42 that is closed does not allow the air driven by the fan 3 to flow through the defroster air duct 105.
As shown in fig. 1, 2, 4, and 5, a first damper 41 is provided at an end of the cooling air duct 103 near the fan 3 to cut off communication between the cooling air duct 103 and the cooling compartment 101. A second damper 42 is provided at an end of the defrosting air duct 15 remote from the fan 3 to cut off the communication between the defrosting air duct 105 and the refrigerating chamber 101.
In addition, the first damper 41 may be disposed at any other position in the cooling air duct 103 on the premise that the first damper 41 prevents the airflow driven by the fan 3 from flowing into the storage chamber 102.
Similarly, the second damper 42 may be disposed at any other position in the defrosting air duct 105, or at one end of the defrosting air duct 105 close to the fan 3, on the premise that the second damper 42 can ensure that the air flow driven by the fan 3 does not flow through the defrosting air duct 105.
As shown in fig. 1, 2 and 5, the top of the air duct cover plate 110 further defines an engaging air duct 106 corresponding to the fan 3, and the cooling air duct 103 and the defrosting air duct 105 are respectively communicated with the engaging air duct 106. The air blown out from the fan 3 firstly enters the connecting air duct 106 and then enters the cooling air duct 103 and the defrosting air duct 105, in other words, the air flowing into the cooling air duct 103 and the defrosting air duct 105 must flow through the connecting air duct 106.
As shown in fig. 5, the first damper 41 is preferably disposed at the junction of the cooling air duct 103 and the joining air duct 106.
As shown in fig. 4 and 5, the first damper 41 is a pivoting type damper, and the second damper 42 is a sliding type damper. In addition, the skilled person can also set the first damper 41 and the second damper 42 as any other feasible dampers as required, for example, the first damper 41 is set as a sliding damper, and the second damper 42 is a pivoting damper.
The operation of the air-cooled refrigerator according to some embodiments of the present invention will be briefly described with reference to fig. 1 and 2.
As shown in fig. 1, when the air-cooled refrigerator operates in the cooling mode, the first damper 41 is opened, the second damper 42 is closed, and the fan 3 drives air to circulate in the cooling circulation air passage through the following paths: the refrigerating compartment 101 → the refrigerating duct 103 → the storage compartment 102 → the return air duct 104 → the refrigerating compartment 101.
As shown in fig. 2, when the air-cooling type refrigerator is operated in the defrosting mode, the first damper 41 is closed, the second damper 42 is opened, and the heating device 5 heats the evaporator 2. The fan 3 drives the air to circulate in the refrigeration cycle air passage, and the air flow path is as follows: refrigeration compartment 101 → defrost duct 105 → refrigeration compartment 101.
Based on the foregoing description, it can be understood by those skilled in the art that in some embodiments of the present invention, when the evaporator 2 is defrosted, the first damper 41 is closed, and the second damper 42 is opened, so that air flows only between the cooling chamber 101 and the defrosting air duct 105, and does not enter the storage chamber 102, which can both avoid the temperature rise of the storage chamber 102 and heat the evaporator 2 uniformly by the circulating air, thereby improving the defrosting efficiency of the evaporator 2.
Further embodiments of the utility model are described below with reference to fig. 6 and 7. Fig. 6 is a schematic view showing the effect of the damper assembly (cooling mode) according to another embodiment of the present invention, and fig. 7 is a schematic view showing the effect of the damper assembly (defrosting mode) according to another embodiment of the present invention.
In other embodiments of the utility model, as shown in fig. 6 and 7, the damper assembly 4 comprises only the third damper 43, and the third damper 43 is rotatably disposed in the engaging duct 106, unlike the previously described embodiments.
Specifically, the contour of the engaging duct 106 is configured as a ring. The third damper 43 includes two arc plates (not labeled) so that the third damper 43 closes the air inlets (not labeled) of the two cooling air ducts 103 through the two arc plates respectively.
As shown in fig. 6, when the third damper 43 is in the first position (the position shown in fig. 6), the two cooling air ducts 103 communicate with the engaging air duct 106, and the defrosting air duct 105 is blocked from the engaging air duct 106. At this time, the air driven by the fan 3 flows into the storage chamber 102 and circulates in the cooling circulation air passage as shown in fig. 1.
As shown in fig. 7, when the third damper 43 is in the second position (the position shown in fig. 7), the two cooling air ducts 103 are blocked from the engaging air duct 106, and the defrosting air duct 105 is communicated with the engaging air duct 106. At this time, the air driven by the fan 3 flows through the defroster air duct 105 and circulates in the defroster circulation air duct as shown in fig. 2.
Other embodiments of the utility model have at least the same technical effect as the embodiments described above.
So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without departing from the technical principle of the present invention, a person skilled in the art may split and combine the technical solutions in the above embodiments, and may make equivalent changes or substitutions for related technical features, and any changes, equivalents, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.
Claims (10)
1. An air-cooled refrigerator, comprising:
the refrigerator comprises a refrigerator body, a refrigerating chamber, a storage chamber, a refrigerating air channel, an air return channel and a defrosting air channel, wherein the refrigerating chamber, the refrigerating air channel, the storage chamber and the air return channel are sequentially communicated end to form a refrigerating circulation air path; two ends of the defrosting air channel are respectively communicated with the refrigerating chamber to form a defrosting circulation air path;
an evaporator disposed within the refrigerated compartment and located between the two ends of the defrost duct;
a fan;
a damper assembly for causing the fan-driven air to flow toward the storage chamber and to circulate in the refrigeration cycle air passage, and for causing the fan-driven air to flow through the defrost air passage and to circulate in the defrost cycle air passage.
2. The air-cooling type refrigerator according to claim 1,
the damper assembly includes a first damper and a second damper,
the first damper that is opened allows the air driven by the fan to flow to the storage chamber and circulate in the refrigeration cycle air path, and the first damper that is closed does not allow the air driven by the fan to flow to the storage chamber;
the second air door which is opened enables the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting circulation air channel, and the second air door which is closed does not allow the air driven by the fan to flow through the defrosting air channel.
3. The air-cooling type refrigerator according to claim 2,
the first air door is arranged at one end of the refrigeration air duct close to the fan; or,
the first air door is arranged in the refrigeration air duct.
4. The air-cooling type refrigerator according to claim 3,
the second air door is arranged at one end of the defrosting air channel close to the fan; or,
the second air door is arranged at one end of the defrosting air channel far away from the fan; or,
the second air door is arranged in the defrosting air channel.
5. The air-cooling type refrigerator according to claim 1,
the damper assembly includes a third damper that is,
the third air door at the first position enables the air driven by the fan to flow to the storage chamber and circulate in the refrigeration cycle air path;
and the third air door at the second position enables the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting circulation air channel.
6. The air-cooling type refrigerator according to claim 5,
the third air door is arranged at one end of the refrigeration air duct close to the fan; and/or the like and/or,
the third damper is a rotary damper.
7. The air-cooled refrigerator according to any one of claims 1 to 6,
the fan is arranged above the evaporator; and/or the like and/or,
the refrigerator body is limited with two refrigeration wind channels and one defrosting wind channel, and the defrosting wind channel is located between the two refrigeration wind channels.
8. The air-cooling type refrigerator according to claim 7,
the refrigerator body comprises an air duct cover plate, and the refrigeration air duct and the defrosting air duct are formed on the air duct cover plate.
9. The air-cooling type refrigerator according to claim 7,
the air-cooled refrigerator further includes a heating device disposed at a bottom side of the evaporator.
10. The air-cooled refrigerator according to any one of claims 1 to 6,
the fan is a centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122444971.3U CN216409427U (en) | 2021-10-11 | 2021-10-11 | Air-cooled refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122444971.3U CN216409427U (en) | 2021-10-11 | 2021-10-11 | Air-cooled refrigerator |
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| CN216409427U true CN216409427U (en) | 2022-04-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061163A1 (en) * | 2021-10-11 | 2023-04-20 | 青岛海尔电冰箱有限公司 | Air-cooled refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061163A1 (en) * | 2021-10-11 | 2023-04-20 | 青岛海尔电冰箱有限公司 | Air-cooled refrigerator |
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