CN112013591A - Air return controllable refrigeration cabinet - Google Patents
Air return controllable refrigeration cabinet Download PDFInfo
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- CN112013591A CN112013591A CN201910448848.3A CN201910448848A CN112013591A CN 112013591 A CN112013591 A CN 112013591A CN 201910448848 A CN201910448848 A CN 201910448848A CN 112013591 A CN112013591 A CN 112013591A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 40
- 238000001816 cooling Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012864 cross contamination Methods 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000000007 visual effect 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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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 a return air controllable refrigeration cabinet, wherein a first channel communicated with an upper side space of a shelf of the refrigeration cabinet is formed in the shelf, the return air channel is provided with a first return air opening butted with the first channel, the refrigeration cabinet is also provided with an air door for controlling whether the return air channel is communicated with the first channel or not by opening or closing, a freshness sensing unit for sensing freshness data of articles in the upper side space of the corresponding shelf, a judging unit for judging whether the articles in the upper side space of the corresponding shelf are fresh or not according to sensing signals of the freshness sensing unit, and a control unit for controlling the opening or closing of the air door according to the judging result of the judging unit, wherein when the judging unit judges that the articles in the upper side space of the corresponding shelf are fresh, the air door is; when the articles on a certain shelf are not fresh, the fluidity of the air in the space above the shelf can be reduced by closing the air door corresponding to the shelf, so that the cross contamination among a plurality of spaces in the accommodating cavity can be avoided, and the refrigeration effect of the refrigeration cabinet is improved.
Description
Technical Field
The invention relates to the field of refrigeration, in particular to a return air controllable refrigeration cabinet.
Background
The receiving cavity for storing the articles in the refrigerator is generally divided into a plurality of spaces by a shelf, and each of the divided spaces may independently store the articles. In the prior art, when the refrigeration cabinet works, air cooled by the evaporator flows out of the air outlet duct and flows to each divided space, and then flows back to the evaporator through the air return opening to complete a refrigeration cycle. However, the prior art has the following problems: based on the refrigeration cycle mode of the existing refrigeration cabinet, once the articles stored in a certain partitioned space go bad, the polluted air can quickly spread to the whole accommodating cavity along with the air flow, so that the cross contamination among the articles in the accommodating cavity is caused.
In view of the above, there is a need for an improved refrigeration cabinet to solve the above problems.
Disclosure of Invention
The invention aims to at least solve one technical problem in the prior art, and in order to achieve the purpose, the invention provides a return air controllable refrigeration cabinet which is specifically designed as follows.
A controllable type refrigeration cabinet of return air, including the container body with accommodating the cavity and horizontal setting up in said accommodating the cavity and is used for cutting apart the shelf of said accommodating cavity, the said container body also has and supplies the air in the said accommodating cavity to flow back to the air return duct cooled of the evaporator, form the first channel communicated with space above it in the said shelf, the said air return duct has the first return air inlet butted with said first channel; the refrigeration cabinet is also provided with an air door which is opened or closed to control whether the return air duct is communicated with the first channel or not, a freshness sensing unit which senses freshness data of the articles in the space above the corresponding shelf, a judging unit which judges whether the articles in the space above the corresponding shelf are fresh or not according to sensing signals of the freshness sensing unit, and a control unit which controls the opening or closing of the air door according to the judging result of the judging unit; when the judging unit judges that the articles in the space on the shelf are fresh, the air door is opened.
Further, the freshness sensing unit is an odor sensor.
Further, the shelf comprises an alarm unit which automatically alarms when the judgment unit judges that the articles in the space above the corresponding shelf are not fresh.
Furthermore, the first air return opening is formed in the rear wall of the accommodating cavity, the first channel extends in the front-rear direction, the rear end of the first channel is connected to the first air return opening in an abutting mode, and a plurality of first through holes communicated with the first channel and the space on the upper side of the shelf are formed in the upper surface of the shelf; in the direction that the rear end of the first channel points to the front end, the opening area ratio of the plurality of first through holes on the upper surface of the shelf is gradually increased.
Furthermore, in the direction that the rear end of the first channel points to the front end, the opening area of the single first through hole is gradually increased; or, the open areas of all the single first through holes are the same, and the distribution density of the first through holes is gradually increased in the extending direction of the first channel.
Furthermore, the upper surface of the shelf is provided with a low area which is provided with the first through hole and the horizontal height of which is not higher than the peripheral area of the first through hole, and the height of the peripheral area of the low area is gradually reduced in the direction close to the low area.
Furthermore, the height of the bottom surface of the inner wall surrounding and forming the first channel is gradually reduced in the direction close to the first air return opening.
Furthermore, the box body is further provided with an air outlet duct which extends from bottom to top and is used for allowing air cooled by the evaporator to enter the accommodating cavity, at least one shelf is positioned in the height range of the air outlet duct, a second channel communicated with the lower side space of each shelf in the height range of the air outlet duct is formed in each shelf, and the air outlet duct is provided with a first air outlet butted with the second channel.
Furthermore, the first air outlet is formed in the rear wall of the accommodating cavity, the second channel extends in the front-rear direction, the rear end of the second channel is connected to the first air outlet in an abutting mode, and a plurality of second through holes communicated with the second channel and the space below the shelf are formed in the lower surface of the shelf; in the direction that the rear end of the second channel points to the front end, the opening area of the plurality of second through holes on the lower surface of the shelf is gradually increased.
Furthermore, the box body is also provided with a second air return opening for returning air in the space at the lower side of the shelf at the bottommost layer to the evaporator for cooling.
The invention has the beneficial effects that: based on the specific structure of the return air controllable refrigerator, when the articles on a certain shelf are not fresh, the air door corresponding to the shelf is closed, so that the fluidity of the air in the space above the shelf can be reduced, the cross contamination among a plurality of spaces in the accommodating cavity can be avoided, and the refrigerating effect of the refrigerator is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic front view of a refrigeration cabinet according to the present invention;
FIG. 2 is a schematic cross-sectional view taken at the position A-A' of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken at the position B-B' in FIG. 1;
FIG. 4 is a schematic plan view of the shelf;
FIG. 5 is a schematic cross-sectional view taken at the position C-C' of FIG. 4;
FIG. 6 is another schematic cross-sectional view taken at the position C-C' in FIG. 4;
FIG. 7 is a schematic cross-sectional view taken at the position D-D' in FIG. 4;
FIG. 8 is another schematic cross-sectional view taken at the position D-D' in FIG. 4;
FIG. 9 is a schematic view of the shelf and return air duct in one combination;
FIG. 10 is another plan view of the shelf;
fig. 11 is a schematic view of the shelf (corresponding to the cross section at the position E-E' in fig. 4) and the air outlet duct.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 and 2, the return air controllable refrigeration cabinet according to the present invention includes a cabinet 11 and a door 12 disposed at a front side of the cabinet 11 for opening or closing the cabinet 11. An accommodating chamber 110 for accommodating articles is formed in the case 11. The refrigeration cabinet of the present invention further includes a shelf 400 transversely disposed in the accommodating cavity 110 for dividing the accommodating cavity 110, and specifically, in this embodiment, three shelves 400 are disposed at intervals from top to bottom, and four layers of divided spaces are formed in the accommodating cavity 110.
As shown in fig. 1 and 3, the cabinet 11 of the refrigeration cabinet of the present invention further includes a return air duct 300 for returning air inside the accommodating cavity 110 to the evaporator 500 for cooling. Specifically, in the present embodiment, the return air duct 300 extends from top to bottom and is located in the middle of the rear side of the accommodating cavity 110, and is formed by the duct cover plate 112 located at the rear side of the accommodating cavity 110 and the first back plate 113 located at the rear side of the duct cover plate 112.
Referring to fig. 4, 5 and 9, a first passage 42 communicating with an upper space thereof is formed in a shelf 400 in the receiving chamber 110 according to the present invention; as further shown in connection with fig. 1, the return air duct 300 has a first return air opening 31 that interfaces with the first duct 42. Specifically, in the present embodiment, the first air return opening 31 includes a top shelf air return opening 311, a middle shelf air return opening 312, and a bottom shelf air return opening 313, which are respectively in butt joint with the first channels 42 in the three shelves 400.
Referring to fig. 9, the refrigeration cabinet of the present invention further includes a first damper 421 which is opened or closed to control whether the return air duct 300 is communicated with the first channel 42, a freshness degree sensing unit 422 for sensing freshness degree data of the items in the space above the corresponding shelf 400, a determining unit (not shown) for determining whether the items in the space above the corresponding shelf 400 are fresh or not according to a sensing signal of the freshness degree sensing unit 422, and a first control unit (not shown) for controlling the first damper 421 to be opened or closed according to a determination result of the determining unit. Wherein, when the judging unit judges that the articles in the upper space of the corresponding shelf 400 are fresh, the first air door 421 is opened.
Based on the specific structure of the return air controllable refrigerator, when the articles on a certain shelf 400 are not fresh, the fluidity of the air in the space above the shelf 421 can be reduced by closing the first air door 421 corresponding to the shelf 400, so that the cross contamination among a plurality of partitioned spaces in the accommodating cavity 110 can be avoided, and the refrigeration effect of the refrigerator is improved.
It is understood that, in the implementation process, a certain gap may exist between the front end of each shelf 400 and the door body 12, that is, during the operation of the refrigerator, a certain exchange may exist between the air in the spaces above and below each shelf 400. However, relatively speaking, most of the air in the space above each shelf 400 mainly flows back to the return air duct 300 through the first channel 42 of the corresponding partition 400, and further flows to the evaporator 500 to realize cooling; when a certain first damper 421 is closed, the air fluidity in the space above the corresponding shelf 400 is greatly reduced.
In this embodiment, the freshness sensing unit is an odor sensor, which can be used to detect the gas generated after the articles are spoiled. In the specific implementation process, a reference threshold value is preset in the judgment unit, when the gas concentration detected by the odor sensor does not exceed the reference threshold value, the first air door 421 keeps an open state, and air in the upper space of the corresponding shelf 400 can flow back to the return air duct 300 through the first channel 42; when the gas concentration detected by the odor sensor exceeds the threshold value, the first control unit controls the first damper 421 to close the first air return opening 31, and the air in the space above the corresponding shelf 400 cannot flow back to the air return duct 300 through the first passage 42.
As a preferred embodiment of the present invention, the refrigeration cabinet further comprises an alarm unit (not shown in the figure) for automatically alarming when the judging unit judges that the articles in the space above the corresponding shelf 400 are not fresh, wherein the alarm unit may be a buzzer, an indicator light, a display screen, or other components capable of providing sound signals or visual signals to the user.
Referring to fig. 3, in the embodiment, the air duct cover plate 112 forms a rear wall of the accommodating cavity 110, and the first air return opening 31 is formed on the air duct cover plate 112. Referring to fig. 4 and 9, in the present embodiment, the first channel 42 extends in the front-rear direction and the rear end of the first channel is connected to the first air return opening 31, and a plurality of first through holes 420 communicating the first channel 42 with the space on the shelf 400 are formed on the upper surface of the shelf 400.
As a preferred embodiment of the present embodiment, the ratio of the opening area of the plurality of first through holes 420 on the upper surface of the shelf 400 is gradually increased in a direction in which the rear end of the first passage 42 is directed to the front end. During the operation of the refrigerator, negative pressure can be generated in the return air duct 300, after the first air door 421 is opened, the negative pressure intensity in the first through hole 420 close to the position of the first return air opening 31 is greater than the negative pressure intensity in the first through hole 420 far away from the position of the first return air opening 31, based on the arrangement mode of the first through hole 420 on the upper surface of the partition board 400 in the embodiment, the air return speed in different positions in the front and the back in the space on the upper side of the partition board 400 can be consistent as much as possible, so that more uniform refrigeration effect can be realized in different positions in the front and the back in the space on the upper side of.
In the present invention, the arrangement of the first through holes 420 on the upper surface of the partition 400 may be implemented by various specific implementation structures.
Referring to fig. 4, which shows a first specific implementation of the arrangement of the first through holes 420 on the upper surface of the partition 400, in the present embodiment, the opening area of a single first through hole 420 is gradually increased in a direction from the rear end to the front end of the first channel 42. More specifically, the first through holes 420 are arranged at equal intervals, and the opening area of a single first through hole 420 far away from the first air return opening 31 is larger than the opening area of a single first through hole 420 near the first air return opening 31.
Referring to fig. 10, a second specific implementation of the arrangement of the first through holes 420 on the upper surface of the partition board 400 is shown, in this embodiment, the opening area of each first through hole 420 on the upper surface of the partition board 400 is the same, but the density of the first through holes 420 is gradually increased in the extending direction of the first channels 42. In this embodiment, the first through holes 420 are preferably formed as minute holes, for example, the maximum size in the front-rear and left-right directions is controlled within 3mm, so that particles on the upper surface of the separator 400 can be prevented from falling into the first passage 42.
Referring to fig. 5, the upper surface of the shelf 400 according to the present invention may be in a flat form. However, as a preferred embodiment of the present invention, referring to fig. 6, the shelf 400 of the present embodiment has a lower region formed with a first through hole 420 and having a level not higher than a peripheral region thereof on an upper surface thereof, and the height of the peripheral region of the lower region is gradually decreased in a direction approaching the lower region. In the embodiment shown in fig. 6, the lower area is a middle area of the upper surface of the partition board 400, and the accumulated water on the upper surface of the partition board 400 can be guided into the first passage 42 through the first through hole 420 based on the design manner of the peripheral area of the lower area. In the implementation process, the accumulated water entering the first channel 42 can be further guided into the water receiving tank through the return air duct 300 or directly guided out of the box body 11.
As some preferred embodiments of the present invention, the height of the bottom surface of the inner wall surrounding the first channel 42 is gradually decreased in the direction close to the first air return opening 31, that is, the bottom surface of the inner wall surrounding the first channel 42 forms a slope for the water to automatically flow toward the first air return opening 31. Referring to fig. 7 and 8, two different cross-sectional views of the partition 400 in the extending direction of the first channel 42 are shown, wherein the lower surface of the partition 400 is parallel to the horizontal plane in the implementation structure shown in fig. 7, and the lower surface of the partition 400 is parallel to the bottom surface of the inner wall surrounding the first channel 42 in the implementation structure shown in fig. 8.
In the present invention, as shown in fig. 1 and fig. 2, the box 12 further has an air outlet duct 200 extending from bottom to top for allowing air cooled by the evaporator 500 to enter the accommodating cavity 110. In the present embodiment, the air outlet duct 200 extends from the bottom to the top and is located at the rear side of the accommodating cavity 110, and is formed by an air duct cover plate 112 located at the rear side of the accommodating cavity 110 and a second back plate 111 located at the rear side of the air duct cover plate 112.
In the present invention, at least one shelf 400 is located within the height range of the air outlet duct 200, and as shown in fig. 2, in this embodiment, two upper three shelves 400 are located within the height range of the air outlet duct 200, and one lower shelf 400 is located below the air outlet duct 200. As shown in fig. 2, 4 and 5, a second channel 41 is formed in each shelf 400 located within the height range of the air outlet duct 200 and communicated with the lower space thereof, and as shown in fig. 11, the air outlet duct 200 has a first air outlet 21 connected with the second channel 41. Specifically, in the present embodiment, the first air outlet 21 includes a top shelf air outlet 211 and a middle shelf air outlet 212 respectively connected to the second channels 41 in the two shelves 400 at the upper side.
As a preferred embodiment, the refrigerator according to the present invention further comprises a second damper 411 having an opening degree adjusted to control the amount of cooling air entering the second channel 41 from the outlet duct 200, a sensing unit (not shown) for sensing the storage amount of the articles in the space under the corresponding shelf 400, and a second control unit (not shown) for controlling the opening degree of the damper according to the sensing signal of the sensing unit; wherein, when the sensing unit senses that the storage amount of the goods in the space under the corresponding shelf 400 is increased, the opening degree of the second damper 411 is increased.
Based on the design of second air door 411, during the work of refrigerator, the cold air that gets into in the partition space by air-out wind channel 200 can be adjusted according to the article storage capacity in the corresponding partition space, so make the distribution of cold air more reasonable, improve the refrigeration efficiency of refrigerator.
In an implementation process, the sensing unit is a pressure sensor disposed at the bottom of the space under the corresponding shelf 400 for sensing the weight of the stored goods in the space.
In this embodiment, the first air outlet 21 is formed on the air duct cover plate 112, the second channel 41 extends in the front-rear direction, and the rear end of the second channel is connected to the first air outlet 21, and a plurality of second through holes 410 communicating the second channel 41 with the space under the shelf 400 are formed on the lower surface of the shelf 400; in a direction in which the rear end of the second channel 41 points to the front end, the ratio of the opening area of the plurality of second through holes 410 on the lower surface of the shelf 400 gradually increases. The specific design of the second through hole 410 may refer to the design of the first through hole 410.
When the refrigerator is operated, the air outlet duct 200 can discharge cold air to the positive pressure of the accommodating cavity 110, after the second air door 411 is opened, the positive pressure intensity in the second through hole 410 close to the first air outlet 21 is greater than the positive pressure intensity in the second through hole 410 far away from the first air outlet 21, based on the arrangement mode of the second through hole 410 on the lower surface of the partition board 400 in the embodiment, the cold air supply speed in the lower space of the partition board 400 at different positions can be consistent as far as possible, so that the refrigerating effect can be more uniform at different positions in the lower space of the partition board 400.
Referring to fig. 1 and 3, in the implementation of the present invention, the cabinet 11 further has a second air return opening 32 for returning air in the space under the lowermost shelf 400 to the evaporator 500 for cooling. Specifically, the air in the space under the lowermost shelf 400 cannot flow back to the return air duct 30 through the first passages 42 of the shelf 400, and the second return air inlet 32 is provided to smoothly flow back the air in the space under the lowermost shelf 400.
Referring to fig. 1 and 2, the air outlet duct of the present invention further has a second air outlet 22 connected to the upper space of the topmost shelf 400. Thus, the air outlet duct 200 may provide cool air into the space above the topmost shelf 400 to cool the items in the space.
It can be understood that, in the specific implementation process of the present invention, in order to avoid the influence of the outside on the refrigeration effect of the refrigeration cabinet, the inside of the cabinet of this embodiment is further provided with the thermal insulation material layer 114, wherein the thermal insulation material layer 114 is disposed at the outer position of the first back plate 113 and the second back plate 111, so as to insulate the corresponding air duct. Specifically, in the present embodiment, the portion of the thermal insulation material layer 114 located at the rear side of the first back plate 113 divides the air outlet duct 200 into a left portion and a right portion. In this embodiment, each shelf 400 located within the height range of the air outlet duct 200 has at least two second channels 41 for communicating with the left and right portions of the air outlet duct 200, respectively.
It is understood that, in other embodiments of the present invention, the first back plate 113 is located between the duct cover plate 112 and the second back plate 111, the thermal insulation material 114 has a portion that is disposed outside the second back plate 111 and forms thermal insulation for the outlet duct 200, and portions of the outlet duct 200 located at the left and right sides of the return air duct 300 can form communication at the rear side of the first back plate 113.
In addition, referring to fig. 2 and 3, in the present embodiment, the refrigeration cabinet further includes an evaporator receiving cavity (not shown) disposed below the air outlet duct 200 for receiving the evaporator 500, and a fan 600 for discharging air cooled by the evaporator 500 to the air outlet duct 200.
As further shown in fig. 1, when the air outlet duct 200 is divided into two parts, namely, a left part and a right part, the refrigerator has two fans 600 for exhausting air to the two parts of the air outlet duct 200. In a preferred embodiment of the present invention, the fan 600 in the present embodiment is a centrifugal fan, and the supply of cold air into the air outlet duct 200 is realized by the volute 61.
Based on the refrigeration cabinet provided by the invention, when the fan 600 operates, the air in the accommodating cavity 110 can enter the evaporator accommodating cavity for cooling through the return air duct 300 and the second return air inlet 32, and is discharged to the accommodating cavity 110 through the outlet air duct 200 and the second air outlet 22 to cool the articles in the accommodating cavity 110.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A controllable type refrigeration cabinet of return air, including the container body with accommodating the cavity and horizontal setting up in said accommodating the cavity and is used for cutting apart the shelf of said accommodating cavity, the said container body also has the return air duct for the air in said accommodating cavity flows back to the evaporator and cools off, characterized by that, there is the first channel communicated with space above it in the said shelf, the said return air channel has the first return air inlet in butt joint with said first channel; the refrigeration cabinet is also provided with an air door which is opened or closed to control whether the return air duct is communicated with the first channel or not, a freshness sensing unit which senses freshness data of the articles in the space above the corresponding shelf, a judging unit which judges whether the articles in the space above the corresponding shelf are fresh or not according to sensing signals of the freshness sensing unit, and a control unit which controls the opening or closing of the air door according to the judging result of the judging unit; when the judging unit judges that the articles in the space on the shelf are fresh, the air door is opened.
2. The refrigeration cabinet as recited in claim 1, wherein said freshness sensing unit is an odor sensor.
3. The refrigeration cabinet as claimed in claim 1 or 2, further comprising an alarm unit for automatically alarming when the judging unit judges that the articles in the space above the corresponding shelf are not fresh.
4. The refrigeration cabinet as claimed in claim 1 or 2, wherein the first air return opening is formed in a rear wall of the receiving cavity, the first channel extends in a front-rear direction and is connected to the first air return opening at a rear end, and a plurality of first through holes communicating the first channel with a space on the upper side of the shelf are formed on the upper surface of the shelf; in the direction that the rear end of the first channel points to the front end, the opening area ratio of the plurality of first through holes on the upper surface of the shelf is gradually increased.
5. The refrigeration cabinet as claimed in claim 4, wherein the opening area of a single first through hole is gradually increased in a direction in which the rear end of the first channel is directed to the front end; or, the open areas of all the single first through holes are the same, and the distribution density of the first through holes is gradually increased in the extending direction of the first channel.
6. The refrigeration cabinet as claimed in claim 4, wherein the shelf has a lower area formed with the first through hole and having a level not higher than a peripheral area thereof, and the peripheral area of the lower area is gradually lowered in a direction approaching the lower area.
7. A refrigerator cabinet as claimed in claim 6, characterized in that the height of the bottom surface of the inner wall enclosing said first passage decreases in the direction towards said first return air opening.
8. The refrigeration cabinet as claimed in claim 1 or 2, wherein the cabinet further has an air outlet duct extending from bottom to top for allowing air cooled by the evaporator to enter the accommodating chamber, at least one shelf is located within a height range of the air outlet duct, a second channel communicated with a lower space of each shelf located within the height range of the air outlet duct is formed in each shelf, and the air outlet duct has a first air outlet butted with the second channel.
9. The refrigeration cabinet as claimed in claim 7, wherein the first air outlet is formed at a rear wall of the accommodating cavity, the second channel extends in a front-rear direction and has a rear end connected to the first air outlet, and a plurality of second through holes communicating the second channel with a space under the shelf are formed at a lower surface of the shelf; in the direction that the rear end of the second channel points to the front end, the opening area of the plurality of second through holes on the lower surface of the shelf is gradually increased.
10. The refrigeration cabinet as claimed in claim 1 or 2, wherein the cabinet further has a second air return opening for returning air in the space under the lowermost shelf to the evaporator for cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448848.3A CN112013591A (en) | 2019-05-28 | 2019-05-28 | Air return controllable refrigeration cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448848.3A CN112013591A (en) | 2019-05-28 | 2019-05-28 | Air return controllable refrigeration cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112013591A true CN112013591A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910448848.3A Pending CN112013591A (en) | 2019-05-28 | 2019-05-28 | Air return controllable refrigeration cabinet |
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| Country | Link |
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| CN (1) | CN112013591A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142661A1 (en) * | 2021-01-04 | 2022-07-07 | 青岛海尔电冰箱有限公司 | Refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5720185A (en) * | 1995-06-16 | 1998-02-24 | Daewoo Electronics Co., Ltd. | Refrigerator having a cool air dispersing shelf |
| KR100202606B1 (en) * | 1996-12-13 | 1999-06-15 | 구자홍 | Circulation apparatus for cold chamber cool air of refrigerator |
| WO2007052208A1 (en) * | 2005-10-31 | 2007-05-10 | Arcelik Anonim Sirketi | A refrigerator |
| CN104329858A (en) * | 2014-03-28 | 2015-02-04 | 海尔集团公司 | Mixed refrigeration refrigerator with cold storage and refrigeration functions |
-
2019
- 2019-05-28 CN CN201910448848.3A patent/CN112013591A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5720185A (en) * | 1995-06-16 | 1998-02-24 | Daewoo Electronics Co., Ltd. | Refrigerator having a cool air dispersing shelf |
| KR100202606B1 (en) * | 1996-12-13 | 1999-06-15 | 구자홍 | Circulation apparatus for cold chamber cool air of refrigerator |
| WO2007052208A1 (en) * | 2005-10-31 | 2007-05-10 | Arcelik Anonim Sirketi | A refrigerator |
| CN104329858A (en) * | 2014-03-28 | 2015-02-04 | 海尔集团公司 | Mixed refrigeration refrigerator with cold storage and refrigeration functions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142661A1 (en) * | 2021-01-04 | 2022-07-07 | 青岛海尔电冰箱有限公司 | Refrigerator |
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