CN115316821B - Energy-saving air curtain cabinet and air curtain control method - Google Patents
Energy-saving air curtain cabinet and air curtain control method Download PDFInfo
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- CN115316821B CN115316821B CN202211069419.3A CN202211069419A CN115316821B CN 115316821 B CN115316821 B CN 115316821B CN 202211069419 A CN202211069419 A CN 202211069419A CN 115316821 B CN115316821 B CN 115316821B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005192 partition Methods 0.000 claims abstract description 39
- 238000004891 communication Methods 0.000 claims abstract description 29
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000005057 refrigeration Methods 0.000 claims description 18
- 230000005484 gravity Effects 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000003570 air Substances 0.000 description 311
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0439—Cases or cabinets of the open type
- A47F3/0443—Cases or cabinets of the open type with forced air circulation
- A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention relates to an energy-saving air curtain cabinet and a control method thereof, belonging to the technical field of air curtain cabinets, wherein the energy-saving air curtain cabinet comprises a cabinet body, a fan, an air duct partition plate, an evaporator, an extension plate and an air dividing plate; the cabinet body is provided with a refrigerating cavity, a cavity and an air duct; the top of the refrigerating cavity is provided with an air outlet, and the bottom of the refrigerating cavity is provided with an air return opening; the cavity is communicated with the refrigerating cavity through an air return port; one end of the air duct is communicated with the cavity, and the other end of the air duct is communicated with the refrigerating cavity through an air outlet; the fan is arranged in the cavity; the air duct separation plate separates the air duct into a first air duct and a second air duct; the evaporator is arranged in the first air duct; the extension plate is movably connected with the air duct separation plate and can stretch and retract relative to the air duct separation plate so as to change the communication area between the second air duct and the cavity; the air dividing plate is arranged between the air duct dividing plate and the air outlet and can move so as to divide the communication area between the air outlet and the first air duct and the second air duct. The air curtain cold load of the energy-saving air curtain cabinet can be adjusted according to the requirement, so that the energy consumption is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of air curtain cabinets, and particularly relates to an energy-saving air curtain cabinet and a control method thereof.
Background
At present, the open type refrigeration air curtain cabinet is widely applied to various commercial products, is mainly used for refrigerating and preserving various foods, has the characteristics of large capacity, attractive appearance and convenient commodity taking and storing, and is popular with commercial products and customers. However, the energy consumption of the existing open type refrigeration air curtain cabinet is generally larger, the cold load consumed by the air curtain accounts for 40-70% of the total cold load of the air curtain cabinet, and the cold load loss of the air curtain cabinet is larger due to the entrainment heat exchange of the air curtain and the hot air in the external environment. Therefore, how to reduce the energy consumption of the air curtain cabinet and the cooling load loss of the air curtain is a technical problem which is needed to be solved.
Disclosure of Invention
Aiming at the problems of the existing air curtain cabinet, the invention provides the energy-saving air curtain cabinet and the control method thereof, and the air curtain cooling load of the energy-saving air curtain cabinet can be adjusted according to the needs, so that the energy consumption is effectively reduced.
The invention provides an energy-saving air curtain cabinet, which comprises:
the cabinet body is provided with a refrigerating cavity, a cavity and an air duct; the front side of the refrigerating cavity is opened, an air outlet is formed in the position, close to the front side, of the top, and an air return opening is formed in the position, close to the front side, of the bottom; the cavity is positioned below the refrigerating cavity and is communicated with the refrigerating cavity through an air return port; one end of the air duct is communicated with the cavity, and the other end of the air duct is communicated with the refrigerating cavity through an air outlet;
the fan is arranged in the cavity;
the air duct separation plate is fixedly arranged in the air duct and extends to the other end along one end of the air duct so as to separate the air duct into a first air duct and a second air duct;
the evaporator is arranged in the first air duct;
the extension plate is movably connected to one end of the air duct partition plate, which is close to the cavity, and can stretch and retract relative to the air duct partition plate so as to change the communication area between the second air duct and the cavity; along with the extension of the extension plate, the communication area between the second air channel and the cavity is reduced; when the extension plate is completely extended, the extension plate blocks the second air channel and the cavity;
the air dividing plate is arranged between one end of the air duct dividing plate, which is close to the air outlet, and the air outlet so that the air outlet is communicated with the first air duct, and the rest part of the air duct is communicated with the second air duct; the air dividing plate is movable to divide the communication area of the air outlet with the first air duct and the second air duct respectively.
In this technical scheme, separate the wind channel into first wind channel and second wind channel through the wind channel division board that sets up, wherein set up the evaporimeter in the first wind channel in order to regard as cold wind channel, the second wind channel is as normal atmospheric temperature wind channel, the flexible regulation and control of extension board through setting up gets into the air flow in first wind channel and second wind channel, the removal regulation and control of the windbreak board through setting up gets into the proportion of the normal atmospheric temperature wind in the first wind channel of air curtain and second wind channel, realized the regulation to the cold load volume of air curtain, effectively reduced the energy consumption.
In some embodiments, the air duct extends from the rear of the refrigerating cavity to the upper side of the refrigerating cavity, the air duct partition plate comprises a vertical partition plate positioned at the rear of the refrigerating cavity and a transverse partition plate positioned above the refrigerating cavity, the upper end of the vertical partition plate is connected with one end of the transverse partition plate, the lower end of the vertical partition plate extends downwards to be close to the cavity, and one end of the transverse partition plate away from the vertical partition plate extends horizontally to be close to the air outlet; the extension plate is sleeved at the lower end of the vertical separation plate and slides relative to the vertical separation plate along the vertical direction so as to extend or retract relative to the vertical separation plate; one end of the air dividing plate is sleeved at one end of the transverse partition plate far away from the vertical partition plate and slides relative to the transverse partition plate along the horizontal direction, and the other end of the air dividing plate is propped against the air inlet side surface of the air outlet and slides along the air inlet side surface of the air outlet along with the sliding of the air dividing plate so as to change the communication area of the air outlet with the first air channel and the second air channel respectively.
In some of these embodiments, the air splitter plate has a double step ladder with an upper step angle of 135 ° and a lower step angle of 150 °. In the technical scheme, the wind dividing plate is designed into the double-step trapezoid, so that the swirling condition of air flow in dead angles of the air duct can be reduced to the greatest extent.
In some embodiments, the energy-saving air curtain cabinet further comprises a wind shield, wherein the lower end of the wind shield is movably connected with the cabinet body and can be lifted relative to the cabinet body, and the wind shield is positioned in front of the refrigerating cavity and shields the lower part of the refrigerating cavity when lifted. In the technical scheme, through the wind shield, the cabinet body can be effectively prevented from sucking excessive ambient air, and the cold load loss caused by the entrainment heat exchange of the air curtain and the hot air in the external environment is avoided
In some embodiments, the wind guard comprises a lower wind guard part extending along a horizontal direction and side wind guard parts connected to two ends of the lower wind guard part, wherein the two side wind guard parts extend along a vertical direction, and one sides of the two side wind guard parts, which deviate from the lower wind guard part, are respectively abutted against two side screens of the cabinet body. In this technical scheme, through setting up the deep bead into "concave" font, can follow lower part and both sides and block external environment hot air entering cabinet body comprehensively.
In some embodiments, the energy-saving air curtain cabinet further comprises a first driving piece for driving the extension plate to stretch out and draw back, a second driving piece for driving the air dividing plate to move, and a third driving piece for driving the air blocking plate to lift, so that the extension plate, the air dividing plate and the air blocking plate can be regulated and controlled.
In some embodiments, a plurality of layers of shelves are arranged in the refrigerating cavity, each layer of shelves is provided with a gravity sensor for monitoring the weight of goods placed on the shelf, and a temperature sensor for monitoring the temperature in the refrigerating cavity is also arranged in the refrigerating cavity; the cabinet body is also provided with a controller, the controller is respectively connected with the gravity sensor and the temperature sensor to obtain monitoring results of the gravity sensor and the temperature sensor, and the controller is respectively connected with the first driving piece, the second driving piece and the third driving piece to respectively control the first driving piece, the second driving piece and the third driving piece to execute driving actions. In the technical scheme, the controller is matched with the gravity sensor, the first driving piece, the second driving piece and the third driving piece, so that automatic control can be realized.
In some embodiments, the rear wall of the refrigerating cavity is further provided with an infrared detector for detecting whether a person stands in front of the refrigerating cavity, the infrared detector is connected with the controller to send a detection result to the controller, and the controller controls the third driving piece to execute driving action according to the detection result of the infrared detector. In the technical scheme, the infrared detector and the controller are matched, so that the wind shield can be controlled to descend in time, and the situation that consumers purchase goods is prevented.
Besides, the invention also provides a control method of the energy-saving air curtain cabinet, which is applied to the energy-saving air curtain cabinet of any technical scheme, wherein the energy-saving air curtain cabinet comprises a rapid cooling mode, an energy-saving operation mode, a low-temperature operation mode and a medium-temperature operation mode, and a controller stores a preset goods supplementing amount, a preset refrigeration temperature, a preset low-temperature refrigeration temperature and a preset medium-temperature refrigeration temperature;
when the commodity weight monitored by the gravity sensor received by the controller is compared with the commodity weight received by the controller in the last time, and the commodity weight increasing amount exceeds the preset commodity replenishing amount, the energy-saving air curtain cabinet enters a rapid cooling mode, and the energy-saving air curtain cabinet specifically comprises: the controller controls the first driving piece to drive the extension plate to extend to the maximum extension amount so as to completely block the second air duct and the cavity, and simultaneously controls the second driving piece to drive the air dividing plate to move until the air outlet is communicated with the first air duct, and further controls the third driving piece to drive the air blocking plate to lift so as to enable the temperature in the refrigerating cavity to reach the preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity;
when the temperature sensor monitors that the temperature in the refrigerating cavity reaches the preset refrigerating temperature, the energy-saving air curtain cabinet enters an energy-saving operation mode, and the energy-saving air curtain cabinet specifically comprises: the controller controls the first driving piece to drive the extension plate to retract to the extent that the extension amount is three fifths of the maximum extension amount, and simultaneously controls the second driving piece to drive the air dividing plate to move to the extent that the communication area between the air outlet and the first air duct is three quarters of the total area of the air outlet, and the air baffle keeps in a rising state so as to maintain the temperature in the refrigerating cavity at a preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity;
when the commodity needs low-temperature storage, the energy-saving air curtain cabinet enters a low-temperature operation mode, and specifically comprises the following steps: the controller controls the first driving part to drive the extension plate to stretch to four fifths of the maximum extension amount, and simultaneously controls the second driving part to drive the air dividing plate to move until the communication area of the air outlet and the first air duct is one half of the total area of the air outlet, and the air baffle keeps a lifting state so as to enable the temperature in the refrigerating cavity to reach the preset low-temperature refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity;
when the commodity needs medium temperature storage, the energy-saving air curtain cabinet enters a medium temperature operation mode, and specifically comprises the following steps: the controller controls the first driving part to drive the extension plate to stretch to one fifth of the maximum extension amount, and simultaneously controls the second driving part to drive the air dividing plate to move to the condition that the communication area of the air outlet and the first air duct is one fourth of the total area of the air outlet, and the air baffle keeps a lifting state so as to enable the temperature in the refrigerating cavity to reach the preset medium-temperature refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity.
In some embodiments, the controller also stores a preset residence time, and when the infrared detector detects that the continuous time of a person standing in front of the refrigerating cavity exceeds the preset residence time in the energy-saving operation mode, the low-temperature operation mode and the medium-temperature operation mode, the controller controls the third driving piece to drive the wind shield to descend; when the infrared detector detects that a person leaves, the controller controls the third driving piece to drive the wind shield to lift.
Based on the technical scheme, the air curtain cold load of the energy-saving air curtain cabinet in the embodiment of the invention can be adjusted according to the requirements, so that the energy consumption is effectively reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of an embodiment of an energy-efficient air curtain cabinet of the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged partial schematic view of FIG. 1 at B;
FIG. 4 is a schematic view of the structure of the air splitter plate in one embodiment of the energy-saving air curtain cabinet of the present invention;
fig. 5 is a schematic structural view of a wind deflector in an embodiment of the energy-saving air curtain cabinet of the present invention.
In the figure:
1. a cabinet body; 2. a blower; 3. an extension plate; 4. a first driving member; 5. an evaporator; 6. an air duct partition plate; 7. a wind dividing plate; 8. a second driving member; 9. a wind deflector; 10. a third driving member; 11. a controller; 12. a shelf; 13. a gravity sensor; 14. a temperature sensor; 15. an infrared detector;
101. a refrigeration cavity; 102. a cavity; 103. an air duct; 1031. a first air duct; 1032. a second air duct; 104. an air outlet; 105. an air return port;
601. a vertical partition plate; 602. a transverse dividing plate;
901. a lower wind shielding part; 902. a side wind shielding part;
1001. a driving motor; 1002. a screw rod; 1003. and (3) a nut.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3, in an exemplary embodiment of the energy-saving air curtain cabinet of the present invention, the energy-saving air curtain cabinet includes a cabinet body 1, a blower 2, an evaporator 5, an air duct partition plate 6, an extension plate 3, and an air dividing plate 7; the cabinet body 1 is provided with a refrigerating cavity 101, a cavity 102 and an air duct 103; the front side of the refrigerating cavity 101 is open, an air outlet 104 is formed in the position, close to the front side, of the top, and an air return 105 is formed in the position, close to the front side, of the bottom; the cavity 102 is positioned below the refrigerating cavity 101 and is communicated with the refrigerating cavity 101 through the air return opening 105; one end of the air duct 103 is communicated with the cavity 102, and the other end of the air duct is communicated with the refrigerating cavity 101 through an air outlet 104; the fan 2 is arranged in the cavity 102 and is used for generating air flow; the air duct splitter plate 6 is fixedly arranged in the air duct 103 and extends to the other end along one end of the air duct 103 so as to split the air duct 103 into a first air duct 1031 close to the refrigerating cavity 101 and a second air duct 1032 far from the refrigerating cavity 101; the evaporator 5 is arranged in the first air duct 1031; the extension plate 3 is movably connected to one end of the air duct separation plate 6, which is close to the cavity 102, and can stretch and retract relative to the air duct separation plate 6 so as to change the communication area between the second air duct 1032 and the cavity 102, and the communication area between the second air duct 1032 and the cavity 102 is reduced along with the extension of the extension plate 3, and when the extension plate 3 is fully extended, the extension plate 3 blocks the second air duct 1032 and the cavity 102; the air distribution plate 7 is disposed between one end of the air channel separation plate 6 near the air outlet 104 and the air outlet 104, so that part of the air outlet 104 is communicated with the first air channel 1031, the rest part is communicated with the second air channel 1032, and the air distribution plate 7 is movable to distribute the communication area between the air outlet 104 and the first air channel 1031 and the second air channel 1032 respectively.
The air curtain forming principle of the energy-saving air curtain cabinet is as follows: the fan 2 rotates to generate air flow, the air flows into the air duct 103, wherein the air entering the first air duct 1031 is cooled to cool air through the action of the evaporator 5, the air entering the second air duct 1032 is normal-temperature air, the cool air in the first air duct 1031 and the normal-temperature air in the second air duct 1032 are converged at the air outlet 104 and flow downwards to form an air curtain, and the converged air flows back into the cavity 102 through the air return 105 to form circulation. Wherein, an extension plate 3 is arranged at the communication position of the cavity 102 and the air duct 103, and the communication area between the second air duct 1032 and the cavity 102 can be changed by the extension of the extension plate 3, so that the air flow entering the first air duct 1031 and the second air duct 1032 can be regulated and controlled; the air dividing plate 7 is arranged at the communication position of the air duct 103 and the air outlet 104, and the communication area of the air outlet 104, the first air duct 1031 and the second air duct 1032 can be distributed by moving the air dividing plate 7, so that the ratio of cold air and normal-temperature air in the air curtain can be regulated and controlled. It should be noted that, the energy-saving air curtain cabinet is internally provided with a conventional refrigeration system, including an evaporator 5, a condenser, a throttling element, a compressor and the like, and the arrangement modes of the condenser, the throttling element and the compressor are the same as those of the conventional air curtain cabinet, and are not described herein.
Above-mentioned energy-conserving air curtain cabinet, divide into first wind channel 1031 and second wind channel 1032 with wind channel division board 6 that sets up with wind channel 103, wherein set up evaporimeter 5 in the first wind channel 1031 and regard as the cold wind channel, the second wind channel 1032 is as normal atmospheric temperature wind channel, the air flow that gets into first wind channel 1031 and second wind channel 1032 through the flexible regulation and control of extension board 3 that sets up, the removal regulation and control of through the distributor plate 7 that sets up gets into the cold wind of the first wind channel 1031 of air curtain and the normal atmospheric temperature wind of second wind channel 1032 proportion, realized the regulation to air curtain cold load volume, the energy consumption has effectively been reduced.
Referring to fig. 1-3, in some embodiments, the air duct 103 extends from the rear of the refrigeration cavity 101 to above the refrigeration cavity 101, the air duct partition plate 6 includes a vertical partition plate 601 located at the rear of the refrigeration cavity 101 and a lateral partition plate 602 located above the refrigeration cavity 101, an upper end of the vertical partition plate 601 is connected to one end of the lateral partition plate 602, a lower end of the vertical partition plate 601 extends downward to be close to the cavity 102, and an end of the lateral partition plate 602 remote from the vertical partition plate 601 extends horizontally to be close to the air outlet 104; the extension plate 3 is sleeved at the lower end of the vertical separation plate 601 and slides relative to the vertical separation plate 601 along the vertical direction so as to extend or retract relative to the vertical separation plate 601; one end of the air dividing plate 7 (specifically, the rear end of the air dividing plate 7) is sleeved at one end of the transverse partition plate 602 far away from the vertical partition plate 601 and slides relative to the transverse partition plate 602 along the horizontal direction, and the other end (specifically, the front end of the air dividing plate 7) is propped against the air inlet side surface of the air outlet 104 and slides along the air inlet side surface of the air outlet 104 along with the sliding of the air dividing plate 7, so that the communication area between the air outlet 104 and the first air duct 1031 and the second air duct 1032 respectively is changed. In this embodiment, the air duct splitter plate 6 is configured to be in an inverted L shape, the extension plate 3 is sleeved at the lower end of the vertical splitter plate 601, so that the air inlet area of the second air duct 1032 can be conveniently regulated and controlled by extending or retracting the extension plate 3 relative to the vertical splitter plate 601, and the air dividing plate 7 is sleeved at the front end of the transverse splitter plate 602, so that the communication area between the air outlet 104 and the first air duct 1031 and the second air duct 1032 can be conveniently distributed by moving the air dividing plate 7 forwards and backwards.
Referring to fig. 4, in some embodiments, the air distribution plate 7 has a double step shape, the angle of the upper step is 135 °, and the angle of the lower step is 150 °. The air dividing plate 7 is designed into the double-step trapezoid, so that the swirling condition of air flow in dead angles of the air duct 103 can be reduced to the greatest extent.
Referring to fig. 1 and 5, in some embodiments, the energy-saving air curtain cabinet further includes a wind deflector 9, where a lower end of the wind deflector 9 is movably connected to the cabinet body 1 and can be lifted relative to the cabinet body 1, and when the wind deflector 9 is lifted, it is located in front of the refrigerating cavity 101 and covers a lower portion of the refrigerating cavity 101. When the wind shield 9 is lifted, the cabinet body 1 can be effectively prevented from sucking excessive ambient air, and the air curtain is prevented from losing cold load due to entrainment heat exchange with external ambient hot air; by lowering the wind deflector 9 when the consumer needs to shop, the wind deflector 9 can be prevented from interfering with the consumer's selection of goods. It should be noted that the wind deflector 9 is only required to be set in two height states of being fully raised and fully lowered, so as to satisfy the use requirement.
Referring to fig. 5, in some embodiments, the wind guard 9 includes a lower wind guard portion 901 extending in a horizontal direction and side wind guard portions 902 connected to both ends of the lower wind guard portion 901, both the side wind guard portions 902 extend in a vertical direction, and one sides of the two side wind guard portions 902 facing away from the lower wind guard portion 901 are respectively abutted against both side screens of the cabinet 1. In this embodiment, by arranging the wind deflector 9 in a concave shape, the entry of the external ambient hot air into the cabinet 1 can be completely blocked from the lower portion and both sides. The height of the lower wind shielding portion 901 is preferably 10 to 25cm, and the height of the side wind shielding portion 902 is preferably 30 to 55cm.
In addition, in order to facilitate the regulation and control of the extension plate 3, the wind dividing plate 7 and the wind shielding plate 9, referring to fig. 1, the energy-saving air curtain cabinet further comprises a first driving piece 4 for driving the extension plate 3 to stretch and retract, a second driving piece 8 for driving the wind dividing plate 7 to move, and a third driving piece 10 for driving the wind shielding plate 9 to lift. In this embodiment, as shown in fig. 1, the first driving member 4 and the second driving member 8 are telescopic cylinders, the third driving member 10 is a driving manner of matching the screw rod 1002 with the nut 1003, and specifically includes a driving motor 1001, the screw rod 1002 and the nut 1003, the driving motor 1001 is installed in the cabinet 1, the screw rod 1002 is disposed along a vertical direction, one end of the screw rod 1002 is fixedly connected to an output shaft of the driving motor 1001, the other end is rotatably connected to the cabinet 1, the nut 1003 is screwed on an outer periphery of the screw rod 1002 and is fixedly connected to one side of the wind deflector 9, the screw rod 1002 is driven to rotate by the driving motor 1001, so that the nut 1003 can move along a vertical direction, and further the wind deflector 9 is driven to lift. It will be appreciated that other driving members may be used as the first driving member 4, the second driving member 8 and the third driving member 10 by those skilled in the art.
In some embodiments, for facilitating automatic control, referring to fig. 1, a plurality of layers of shelves 12 are provided in the refrigerating cavity 101, each layer of shelves 12 is provided with a gravity sensor 13 for monitoring the weight of goods placed on the shelf 12, and a temperature sensor 14 for monitoring the temperature in the refrigerating cavity 101 is also provided in the refrigerating cavity 101; the cabinet body 1 is also provided with a controller 11, the controller 11 is respectively connected with the gravity sensor 13 and the temperature sensor 14 to obtain monitoring results of the gravity sensor 13 and the temperature sensor 14, and the controller 11 is respectively connected with the first driving piece 4, the second driving piece 8 and the third driving piece 10 to respectively control the first driving piece 4, the second driving piece 8 and the third driving piece 10 to execute driving actions.
In some embodiments, in order to timely control the lowering of the wind deflector 9 to avoid impeding the consumer from purchasing goods, referring to fig. 1, the rear wall of the refrigerating chamber 101 is further provided with an infrared detector 15 for detecting whether a person stands in front of the refrigerating chamber 101, the infrared detector 15 is connected to the controller 11 to send the detection result to the controller 11, and the controller 11 controls the third driving member 10 to perform the driving action according to the detection result of the infrared detector 15. It should be noted that, the installation height of the infrared detector 15 is set according to the height of the person, so as to ensure that all the person can be detected, and in this embodiment, the infrared detector 15 is specifically located between the first shelf 12 and the second shelf 12 from bottom to top.
Based on the energy-saving air curtain cabinet, the invention further provides a control method of the energy-saving air curtain cabinet, the energy-saving air curtain cabinet comprises a rapid cooling mode, an energy-saving operation mode, a low-temperature operation mode and a medium-temperature operation mode, and the controller 11 stores preset goods supplementing quantity, preset refrigeration temperature, preset low-temperature refrigeration temperature and preset medium-temperature refrigeration temperature. The control method of various modes of the energy-saving air curtain cabinet comprises the following steps:
(1) Fast cooling mode
When the weight of the commodity monitored by the gravity sensor 13 received by the controller 11 is compared with the weight of the commodity received by the controller before, and the increase of the weight of the commodity exceeds the preset replenishment quantity, the energy-saving air curtain cabinet enters a rapid cooling mode, and specifically comprises the following steps: the controller 11 controls the first driving member 4 to drive the extension plate 3 to extend to the maximum extension amount so as to completely block the second air duct 1032 from the cavity 102, the controller 11 simultaneously controls the second driving member 8 to drive the air distributing plate 7 to move until the air outlet 104 is communicated with the first air duct 1031, and the controller 11 further controls the third driving member 10 to drive the wind shield 9 to lift, so that the temperature in the refrigerating cavity 101 reaches the preset refrigerating temperature through the circulating flow of the air flow generated by the fan 2 among the cavity 102, the air duct 103 and the refrigerating cavity 101.
When the energy-saving air curtain cabinet enters a rapid cooling mode, air flow generated by the fan 2 completely enters the first air duct 1031 and is cooled to cold air through the evaporator 5, and then flows out through the air outlet 104 to cool the refrigerating cavity 101 and form an air curtain, and the raised wind shield 9 can effectively prevent the cold air from losing.
(2) Energy-saving operation mode
When the temperature sensor 14 detects that the temperature in the refrigerating cavity 101 reaches the preset refrigerating temperature, the energy-saving air curtain cabinet enters an energy-saving operation mode, and specifically comprises: the controller 11 controls the first driving part 4 to drive the extension plate 3 to retract to the extension amount of three fifths of the maximum extension amount, the controller 11 simultaneously controls the second driving part 8 to drive the air distribution plate 7 to move to the air outlet 104, the communication area of the air outlet 104 and the first air duct 1031 is three quarters of the total area of the air outlet 104, and the air baffle 9 is kept in a lifted state so as to maintain the temperature in the refrigerating cavity 101 at the preset refrigerating temperature through the circulating flow of the air flow generated by the fan 2 among the cavity 102, the air duct 103 and the refrigerating cavity 101.
When the energy-saving air curtain cabinet enters an energy-saving operation mode, part of air flow generated by the fan 2 enters the first air duct 1031 and is cooled to cold air through the evaporator 5, the rest part of the air flow enters the second air duct 1032 as normal-temperature air, the cold air and the normal-temperature air are collected and flow out at the air outlet 104 to form an air curtain to maintain the temperature in the refrigerating cavity 101, and the raised wind shield 9 can effectively prevent the cold air from losing.
(3) Low temperature mode of operation
When the commodity needs low-temperature storage, the energy-saving air curtain cabinet enters a low-temperature operation mode, and specifically comprises the following steps: the controller 11 controls the first driving part 4 to drive the extension plate 3 to stretch to four fifths of the maximum elongation, the controller 11 simultaneously controls the second driving part 8 to drive the air distribution plate 7 to move to the state that the communication area between the air outlet 104 and the first air duct 1031 is one half of the total area of the air outlet 104, and the air baffle 9 keeps a lifting state so as to enable the temperature in the refrigerating cavity 101 to reach the preset low-temperature refrigerating temperature through the circulating flow of the air flow generated by the fan 2 among the cavity 102, the air duct 103 and the refrigerating cavity 101. The low-temperature refrigeration temperature is usually preset to be in the range of 0 ℃ to 5 ℃.
When the energy-saving air curtain cabinet enters a low-temperature operation mode, most of air flow generated by the fan 2 enters the first air duct 1031 and is cooled to cold air through the evaporator 5, and the small part of air flow enters the second air duct 1032 as normal-temperature air, the cold air and the normal-temperature air are collected and flow out at the air outlet 104, the refrigerating cavity 101 is cooled and an air curtain is formed, and the raised wind guard 9 can effectively prevent the cold air from losing.
(4) Medium temperature mode of operation
When the commodity needs medium temperature storage, the energy-saving air curtain cabinet enters a medium temperature operation mode, and specifically comprises the following steps: the controller 11 controls the first driving part 4 to drive the extension plate 3 to stretch to one fifth of the maximum elongation, the controller 11 simultaneously controls the second driving part 8 to drive the air dividing plate 7 to move to the state that the communication area between the air outlet 104 and the first air duct 1031 is one fourth of the total area of the air outlet 104, and the air blocking plate 9 keeps in a lifted state so as to enable the temperature in the refrigerating cavity 101 to reach the preset medium-temperature refrigerating temperature through the circulating flow of the air flow generated by the fan 2 among the cavity 102, the air duct 103 and the refrigerating cavity 101. The medium-temperature storage means that the storage temperature required for the commodity is between low temperature and normal temperature, for example, 5 to 8 ℃.
When the energy-saving air curtain cabinet enters a medium-temperature operation mode, part of air flow generated by the fan 2 enters the first air duct 1031 and is cooled to cold air through the evaporator 5, the rest part of the air flow enters the second air duct 1032 as normal-temperature air, the cold air and the normal-temperature air are collected and flow out at the air outlet 104, the refrigerating cavity 101 is cooled to a relatively small degree, an air curtain is formed to maintain the temperature in the refrigerating cavity 101, and the raised wind shield 9 can effectively prevent the cold air from losing.
It should be noted that, the fast cooling mode and the energy-saving operation mode are automatic modes, and the controller 11 can realize automatic control according to the monitoring results of the gravity sensor 13 and the temperature sensor 14; the low-temperature operation mode and the medium-temperature operation mode are manual modes, and the controller 11 needs to be manually instructed to realize control, and the instruction issuing mode specifically comprises the following steps: a low-temperature operation control button and a medium-temperature operation control button are provided on the controller 11, respectively, and when the low-temperature operation control button or the medium-temperature operation control button is pressed, the controller 11 executes a control program of a corresponding mode.
In some embodiments, the controller 11 also has stored therein a preset dwell time; in the energy-saving operation mode, the low-temperature operation mode and the medium-temperature operation mode, when the infrared detector 15 detects that the continuous time of a person standing in front of the refrigerating cavity 101 exceeds the preset residence time, the controller 11 controls the third driving piece 10 to drive the wind shield 9 to descend; when the infrared detector 15 detects that the person leaves, the controller 11 controls the third driving member 10 to drive the wind deflector 9 to rise.
Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. An energy-saving air curtain cabinet, comprising:
the cabinet body is provided with a refrigerating cavity, a cavity and an air duct; the front side of the refrigerating cavity is open, an air outlet is formed in the position, close to the front side, of the top, and an air return opening is formed in the position, close to the front side, of the bottom; the cavity is positioned below the refrigerating cavity and is communicated with the refrigerating cavity through the air return opening; one end of the air duct is communicated with the cavity, and the other end of the air duct is communicated with the refrigerating cavity through the air outlet;
the fan is arranged in the cavity;
the air duct separation plate is fixedly arranged in the air duct and extends to the other end along one end of the air duct so as to separate the air duct into a first air duct and a second air duct;
the evaporator is arranged in the first air duct;
the extension plate is movably connected to one end of the air duct separation plate, which is close to the cavity, and can stretch and retract relative to the air duct separation plate so as to change the communication area between the second air duct and the cavity; along with the extension of the extension plate, the communication area between the second air channel and the cavity is reduced; when the extension plate is completely extended, the extension plate blocks the second air duct and the cavity;
the air dividing plate is arranged between one end of the air duct dividing plate, which is close to the air outlet, and the air outlet so that the air outlet part is communicated with the first air duct, and the rest part is communicated with the second air duct; the air dividing plate is movable to distribute the communication areas of the air outlet and the first air duct and the second air duct respectively;
the air duct extends from the rear of the refrigerating cavity to the upper side of the refrigerating cavity, the air duct partition plate comprises a vertical partition plate positioned at the rear of the refrigerating cavity and a transverse partition plate positioned above the refrigerating cavity, the upper end of the vertical partition plate is connected with one end of the transverse partition plate, the lower end of the vertical partition plate extends downwards to be close to the cavity, and one end of the transverse partition plate far away from the vertical partition plate extends horizontally to be close to the air outlet; the extension plate is sleeved at the lower end of the vertical separation plate and slides relative to the vertical separation plate along the vertical direction so as to extend or retract relative to the vertical separation plate; one end of the air dividing plate is sleeved at one end of the transverse partition plate, which is far away from the vertical partition plate, and slides along the horizontal direction relative to the transverse partition plate, and the other end of the air dividing plate is propped against the air inlet side surface of the air outlet and slides along the air inlet side surface of the air outlet along with the sliding of the air dividing plate so as to change the communication area of the air outlet with the first air channel and the second air channel respectively.
2. The energy saving air curtain cabinet of claim 1, wherein the air dividing plate is in a double-step trapezoid shape, the angle of the upper step is 135 degrees, and the angle of the lower step is 150 degrees.
3. The energy-saving air curtain cabinet according to claim 1 or 2, further comprising a wind deflector, wherein the lower end of the wind deflector is movably connected to the cabinet body and can be lifted relative to the cabinet body, and the wind deflector is positioned in front of the refrigerating cavity and shields the lower part of the refrigerating cavity when lifted.
4. The energy-saving air curtain cabinet according to claim 3, wherein the air deflector comprises a lower air deflector extending along a horizontal direction and side air deflector parts connected to two ends of the lower air deflector, the two side air deflector parts extend along a vertical direction, and one sides of the two side air deflector parts, which deviate from the lower air deflector parts, are respectively attached to two side screens of the cabinet body.
5. An energy saving air curtain cabinet according to claim 3 further comprising a first driving member for driving the extension plate to retract, a second driving member for driving the air dividing plate to move, and a third driving member for driving the air blocking plate to lift.
6. The energy-saving air curtain cabinet according to claim 5, wherein a plurality of layers of shelves are arranged in the refrigerating cavity, each layer of shelves is provided with a gravity sensor for monitoring the weight of goods placed on the shelf, and a temperature sensor for monitoring the temperature in the refrigerating cavity is also arranged in the refrigerating cavity; the cabinet body is also provided with a controller, the controller is respectively connected with the gravity sensor and the temperature sensor to obtain monitoring results of the gravity sensor and the temperature sensor, and the controller is respectively connected with the first driving piece, the second driving piece and the third driving piece to respectively control the first driving piece, the second driving piece and the third driving piece to execute driving actions.
7. The energy-saving air curtain cabinet according to claim 6, wherein the rear wall of the refrigerating chamber is further provided with an infrared detector for detecting whether a person stands in front of the refrigerating chamber, the infrared detector is connected with the controller to send a detection result to the controller, and the controller controls the third driving member to perform a driving action according to the detection result of the infrared detector.
8. The control method of the energy-saving air curtain cabinet is characterized by being applied to the energy-saving air curtain cabinet of claim 7, wherein the energy-saving air curtain cabinet comprises a rapid cooling mode, an energy-saving operation mode, a low-temperature operation mode and a medium-temperature operation mode, and a preset cargo supplementing amount, a preset refrigeration temperature, a preset low-temperature refrigeration temperature and a preset medium-temperature refrigeration temperature are stored in the controller;
when the commodity weight monitored by the gravity sensor received by the controller is compared with the commodity weight received by the controller in the last time, and the commodity weight increasing amount exceeds the preset commodity replenishing amount, the energy-saving air curtain cabinet enters the rapid cooling mode, and specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to extend to the maximum extension amount so as to completely block the second air duct and the cavity, the controller simultaneously controls the second driving piece to drive the air distribution plate to move until the air outlet is communicated with the first air duct, and the controller further controls the third driving piece to drive the wind shield to lift so as to enable the temperature in the refrigerating cavity to reach the preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity;
when the temperature sensor detects that the temperature in the refrigerating cavity reaches the preset refrigerating temperature, the energy-saving air curtain cabinet enters the energy-saving operation mode, and the energy-saving operation mode specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to retract to the extent that the extension amount is three fifths of the maximum extension amount, and simultaneously controls the second driving piece to drive the air dividing plate to move until the communication area of the air outlet and the first air duct is three quarters of the total area of the air outlet, and the air blocking plate keeps in a rising state so as to maintain the temperature in the refrigerating cavity at the preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity;
when the commodity needs low-temperature storage, the energy-saving air curtain cabinet enters the low-temperature operation mode, and specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to stretch to four fifths of the maximum elongation, and simultaneously controls the second driving piece to drive the air dividing plate to move until the communication area of the air outlet and the first air duct is one half of the total area of the air outlet, and the air blocking plate keeps a lifting state so as to enable the temperature in the refrigerating cavity to reach the preset low-temperature refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity;
when the commodity needs medium temperature storage, the energy-saving air curtain cabinet enters the medium temperature operation mode, and specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to stretch to one fifth of the maximum elongation, and simultaneously controls the second driving piece to drive the air dividing plate to move to the condition that the communication area of the air outlet and the first air duct is one fourth of the total area of the air outlet, and the air baffle keeps a lifting state so as to enable the temperature in the refrigerating cavity to reach the preset medium-temperature refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air duct and the refrigerating cavity.
9. The method for controlling an energy-saving air curtain cabinet according to claim 8, wherein a preset residence time is stored in the controller, and the controller controls the third driving member to drive the wind deflector to descend when the infrared detector detects that a continuous time of a person standing in front of the refrigerating chamber exceeds the preset residence time in the energy-saving operation mode, the low-temperature operation mode and the medium-temperature operation mode; when the infrared detector detects that a person leaves, the controller controls the third driving piece to drive the wind shield to lift.
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| CN202211069419.3A CN115316821B (en) | 2022-08-31 | 2022-08-31 | Energy-saving air curtain cabinet and air curtain control method |
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| CN202211069419.3A CN115316821B (en) | 2022-08-31 | 2022-08-31 | Energy-saving air curtain cabinet and air curtain control method |
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| CN115316821A CN115316821A (en) | 2022-11-11 |
| CN115316821B true CN115316821B (en) | 2024-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1878200A (en) * | 1998-12-22 | 2000-07-12 | Alan Nuttall Limited | A heated food storage and display cabinet |
| CN108294556A (en) * | 2018-02-21 | 2018-07-20 | 河南千年冷链设备有限公司 | A kind of vertical open refrigerated showcase with special air duct |
| CN211673424U (en) * | 2019-12-23 | 2020-10-16 | 青岛海容商用冷链股份有限公司 | Air curtain freezer |
| CN113915867A (en) * | 2021-02-25 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
-
2022
- 2022-08-31 CN CN202211069419.3A patent/CN115316821B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1878200A (en) * | 1998-12-22 | 2000-07-12 | Alan Nuttall Limited | A heated food storage and display cabinet |
| CN108294556A (en) * | 2018-02-21 | 2018-07-20 | 河南千年冷链设备有限公司 | A kind of vertical open refrigerated showcase with special air duct |
| CN211673424U (en) * | 2019-12-23 | 2020-10-16 | 青岛海容商用冷链股份有限公司 | Air curtain freezer |
| CN113915867A (en) * | 2021-02-25 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
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| CN115316821A (en) | 2022-11-11 |
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