CN115316821A - Energy-saving air curtain cabinet and air curtain control method - Google Patents

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 distribution 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 inlet; the cavity is communicated with the cold storage cavity through an air return inlet; one end of the air duct is communicated with the cavity, and the other end of the air duct is communicated with the cold storage cavity through an air outlet; the fan is arranged in the cavity; the air duct partition plate divides 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 the air duct partition plate and can stretch relative to the air duct partition plate so as to change the communication area of the second air duct and the cavity; the air distribution plate is arranged between the air duct partition plate and the air outlet and can move so as to distribute the communication area of the air outlet and the first air duct and the second air duct. The air curtain cooling load capacity of the energy-saving air curtain cabinet can be adjusted according to needs, and the energy consumption is effectively reduced.

Description

Energy-saving air curtain cabinet and air curtain control method

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 business superman, is mainly used for refrigerating and refreshing various foods, has the characteristics of large capacity, attractive appearance and convenient commodity taking and storing, and is favored by merchants and customers. However, the energy consumption of the existing open type refrigeration air curtain cabinet is generally large, the cooling load consumed by the air curtain accounts for 40-70% of the total cooling load of the air curtain cabinet, and the cooling load loss of the air curtain cabinet is large due to the heat transfer of the air curtain and the entrainment and absorption of the hot air of the external environment. Therefore, how to reduce the energy consumption of the air curtain cabinet and reduce the loss of the cooling load of the air curtain is an urgent technical problem 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.

The invention provides an energy-saving air curtain cabinet, comprising:

a cabinet body provided with a refrigerating chamber, a cavity and an air duct; the front side of the refrigerating cavity is open, an air outlet is formed at the position close to the front side of the top of the refrigerating cavity, and an air return opening is formed at the position close to the front side of the bottom of the refrigerating cavity; the cavity is positioned below the refrigerating cavity and 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 cold storage cavity through an air outlet;

a fan disposed within the cavity;

the air duct partition plate is fixedly arranged in the air duct and extends to the other end along one end of the air duct so as to partition the air duct into a first air duct and a second air duct;

the evaporator is arranged in the first air duct;

the extending plate is movably connected to one end, close to the cavity, of the air duct partition plate and can stretch relative to the air duct partition plate so as to change the communication area of the second air duct and the cavity; along with the extension of the extension plate, the communication area of the second air duct and the cavity is reduced; when the extension plate is completely extended out, the extension plate blocks the second air duct and the cavity;

the air distribution plate is arranged between one end of the air duct separation plate close to the air outlet and the air outlet so as to enable the air outlet part to be communicated with the first air duct and the rest part to be communicated with the second air duct; the air distribution plate can move to distribute the communication areas of the air outlets and the first air channel and the second air channel respectively.

In the technical scheme, the air channel is separated into the first air channel and the second air channel through the arranged air channel separation plate, wherein the evaporator is arranged in the first air channel to serve as a cold air channel, the second air channel serves as a normal-temperature air channel, the air flow entering the first air channel and the second air channel is regulated and controlled through the extension of the arranged extension plate, the proportion of cold air entering the first air channel of the air curtain and normal-temperature air entering the second air channel is regulated and controlled through the movement of the arranged air distribution plate, the adjustment of the cold load capacity of the air curtain is realized, and the energy consumption is effectively reduced.

In some embodiments, the air duct extends from the rear of the refrigeration cavity to the upper part of the refrigeration cavity, the air duct partition plate comprises a vertical partition plate located at the rear of the refrigeration cavity and a transverse partition plate located above the refrigeration 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, far away from the vertical partition plate, of the transverse 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 distribution plate is sleeved at one end, far away from the vertical partition plate, of the transverse partition plate and slides relative to the transverse partition plate along the horizontal direction, and the other end of the air distribution plate abuts 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 distribution plate so as to change the communication area of the air outlet and the first air channel and the second air channel respectively.

In some of the embodiments, the wind-dividing plate has a double-step ladder shape, the angle of the upper step is 135 degrees, and the angle of the lower step is 150 degrees. In the technical scheme, the air distribution plate is designed into the double-step trapezoid, so that the convolution condition of the air flow in the dead angle 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, the lower end of the wind shield is movably connected to the cabinet body and can lift relative to the cabinet body, and the wind shield is located in front of the refrigerating cavity and shields the lower portion of the refrigerating cavity when rising. In the technical scheme, the wind shield can effectively prevent the cabinet body from sucking too much ambient air through the wind shield, and cold load loss caused by the wind curtain and the rolling heat exchange of the hot air of the external environment is avoided

In some embodiments, the wind deflector comprises a lower wind deflector extending along the horizontal direction and side wind deflectors connected to two ends of the lower wind deflector, wherein the two side wind deflectors both extend along the vertical direction, and one sides of the two side wind deflectors departing from the lower wind deflector are respectively attached to two side screens of the cabinet body. In the technical scheme, the wind shield is arranged to be concave, so that hot air in the external environment can be comprehensively prevented from entering the cabinet body from the lower part and two sides.

In some embodiments, the energy-saving air curtain cabinet further comprises a first driving piece for driving the extension plate to stretch, a second driving piece for driving the air dividing plate to move, and a third driving piece for driving the air baffle to lift, so that the extension plate, the air dividing plate and the air baffle can be regulated and controlled.

In some embodiments, a plurality of layers of shelves are arranged in the refrigerating chamber, each layer of shelf is provided with a gravity sensor for monitoring the weight of commodities placed on the shelf, and a temperature sensor for monitoring the temperature in the refrigerating chamber is also arranged in the refrigerating chamber; the cabinet body still installs the controller, and the controller is connected in order to acquire gravity sensor and temperature sensor's monitoring result respectively with gravity sensor and temperature sensor, and the controller still is connected respectively with first driving piece, second driving piece and third driving piece to control first driving piece, second driving piece and third driving piece respectively and carry out the drive action. In this technical scheme, cooperate through the controller that sets up and gravity sensor, first driving piece, second driving piece and third driving piece, can realize automatic control.

In some embodiments, 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 execute a driving action according to the detection result of the infrared detector. In the technical scheme, the infrared detector is matched with the controller, so that the wind shield can be controlled to descend in time, and the condition that a consumer purchases commodities 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 in 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 replenishment quantity, a preset refrigeration temperature, a preset low-temperature refrigeration temperature and a preset medium-temperature refrigeration temperature;

compare as the commodity weight of the gravity sensor monitoring that the controller was received and the commodity weight of its previous receipt, when the commodity weight increment volume exceeded preset replenishment volume, energy-conserving air curtain cabinet got into the rapid cooling mode, specifically included: 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 channel and the cavity, and simultaneously controls the second driving piece to drive the air distribution plate to move to the air outlet and be communicated with the first air channel, and further controls the third driving piece to drive the air baffle to rise so as to enable the temperature in the refrigerating cavity to reach a preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air channel and the refrigerating cavity;

when temperature sensor monitors the temperature in the cold-stored intracavity and reachs preset cold-stored temperature, energy-conserving air curtain cabinet gets into energy-conserving operational mode, specifically includes: the controller controls the first driving piece to drive the extension plate to retract to three fifths of the maximum extension amount, the controller simultaneously controls the second driving piece to drive the air distribution plate to move to a position where the communication area of the air outlet and the first air channel is three quarters of the total area of the air outlet, and the air baffle is kept in a lifting state so that the temperature in the refrigerating cavity is kept at a preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air channel and the refrigerating cavity;

when the goods need low-temperature storage, energy-conserving air curtain cabinet gets into low temperature operation mode, specifically includes: the controller controls the first driving piece to drive the extension plate to stretch and retract to the extent that the extension amount is four fifths of the maximum extension amount, the controller simultaneously controls the second driving piece to drive the air distribution plate to move to the position that the communication area of the air outlet and the first air channel is one half of the total area of the air outlet, and the air baffle plate keeps a lifting state so that the temperature in the refrigerating cavity reaches the preset low-temperature refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air channel and the refrigerating cavity;

when the commodity needs medium-temperature storage, the energy-saving air curtain cabinet enters a medium-temperature operation mode, and the method specifically comprises the following steps: the controller controls the first driving part to drive the extension plate to stretch and retract to the extent that the extension amount is one fifth of the maximum extension amount, the controller simultaneously controls the second driving part to drive the air distribution plate to move to the position where the communication area of the air outlet and the first air channel is one fourth of the total area of the air outlet, and the air baffle keeps a rising state so that air flow generated by the fan circularly flows among the cavity, the air channel and the refrigerating cavity to enable the temperature in the refrigerating cavity to reach the preset medium-temperature refrigerating temperature.

In some embodiments, the controller further stores a preset dwell time, and in the energy-saving operation mode, the low-temperature operation mode and the medium-temperature operation mode, when the infrared detector detects that the continuous time of a person standing in the refrigerating cavity exceeds the preset dwell time, the controller controls the third driving piece to drive the wind shield to descend; when the infrared detector detects that the person leaves, the controller controls the third driving piece to drive the wind shield to lift.

Based on the technical scheme, the air curtain cooling load capacity of the energy-saving air curtain cabinet can be adjusted according to needs, and 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 embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of an energy-saving air curtain cabinet of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic structural view of an air distribution plate in an embodiment of the energy-saving air curtain cabinet of the present invention;

fig. 5 is a schematic structural diagram of a wind deflector in an embodiment of the energy-saving air curtain cabinet of the invention.

In the figure:

1. a cabinet body; 2. a fan; 3. an extension plate; 4. a first driving member; 5. an evaporator; 6. an air duct partition plate; 7. a wind distribution 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 refrigerated chamber; 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 opening;

601. a vertical partition plate; 602. a transverse divider plate;

901. a lower wind shield part; 902. a side wind shield portion;

1001. a drive motor; 1002. a screw rod; 1003. and 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 is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to 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 those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to 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, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled 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 fan 2, an evaporator 5, a duct partition plate 6, an extension plate 3, and a wind distribution 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 arranged at the position close to the front side of the top, and an air return opening 105 is arranged at 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 an air return opening 105; one end of the air duct 103 is communicated with the cavity 102, and the other end is communicated with the refrigerating cavity 101 through an air outlet 104; the fan 2 is arranged in the cavity 102 and used for generating air flow; the air duct partition plate 6 is fixedly disposed in the air duct 103 and extends to the other end along one end of the air duct 103 to partition the air duct 103 into a first air duct 1031 close to the cooling chamber 101 and a second air duct 1032 far from the cooling chamber 101; the evaporator 5 is disposed in the first air duct 1031; the extension plate 3 is movably connected to one end of the air duct partition plate 6 close to the cavity 102, and can extend and retract relative to the air duct partition plate 6 to change the communication area between the second air duct 1032 and the cavity 102, along with the extension of the extension plate 3, the communication area between the second air duct 1032 and the cavity 102 is reduced, and when the extension plate 3 is completely extended out, the extension plate 3 blocks the second air duct 1032 and the cavity 102; the air dividing plate 7 is disposed between one end of the air duct dividing plate 6 close to the air outlet 104 and the air outlet 104, so that part of the air outlet 104 is communicated with the first air duct 1031, and the remaining part is communicated with the second air duct 1032, and the air dividing plate 7 is movable to distribute communication areas of the air outlet 104 and the first air duct 1031 and the second air duct 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 by the action of the evaporator 5, the air flow 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 collected at the air outlet 104 and flow out downwards to form an air curtain, and the collected air flows through the air return opening 105 and returns to the cavity 102 again to form a circulation. The extending 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 and contraction of the extending 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 distribution 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 and the first air duct 1031 and the second air duct 1032 can be distributed by moving the air distribution plate 7, so that the proportion of cold air and normal temperature air in the air curtain can be regulated. It should be noted that a conventional refrigeration system is disposed in the energy-saving air curtain cabinet, and includes the evaporator 5, the condenser, the throttling element, the compressor, and the like, and the arrangement manner of the condenser, the throttling element, and the compressor is the same as that of the existing air curtain cabinet, which is not described herein again.

Above-mentioned energy-conserving air curtain cabinet separates wind channel 103 for first wind channel 1031 and second wind channel 1032 through the wind channel division board 6 that sets up, wherein set up evaporimeter 5 in first wind channel 1031 in order to regard as the cold wind channel, 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 is adjusted and control through the flexible regulation and control of the extension board 3 that sets up, the proportion of the cold wind that gets into first wind channel 1031 and the normal atmospheric temperature wind of second wind channel 1032 of air curtain is adjusted and control through the removal of the minute aerofoil 7 that sets up, the regulation to the air curtain cold load capacity has been realized, 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 cooling chamber 101 to the upper side of the cooling chamber 101, the air duct partition plate 6 includes a vertical partition plate 601 located at the rear of the cooling chamber 101 and a horizontal partition plate 602 located above the cooling chamber 101, an upper end of the vertical partition plate 601 is connected to one end of the horizontal partition plate 602, a lower end of the vertical partition plate 601 extends downward to a position close to the cavity 102, and an end of the horizontal partition plate 602 away from the vertical partition plate 601 extends horizontally to a position 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 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 on one end of the transverse dividing plate 602 away from the vertical dividing plate 601 and slides relative to the transverse dividing plate 602 along the horizontal direction, and the other end (specifically, the front end of the air dividing plate 7) abuts on 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 as to change the communication areas of the air outlet 104 and the first air duct 1031 and the second air duct 1032 respectively. In this embodiment, the air duct partition plate 6 is disposed in an inverted L shape, the extension plate 3 is sleeved at the lower end of the vertical partition plate 601, so that the air inlet area of the second air duct 1032 can be regulated and controlled by the extension or retraction of the extension plate 3 relative to the vertical partition plate 601, and the air distribution plate 7 is sleeved at the front end of the transverse partition 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 distributed by the back-and-forth movement of the air distribution plate 7.

Referring to fig. 4, in some embodiments, the splitter plate 7 has a double step shape, with the upper step having an angle of 135 ° and the lower step having an angle of 150 °. The design of the air dividing plate 7 as such a double-step trapezoid can minimize the whirling condition of the air flow in the dead angle of the air duct 103.

Referring to fig. 1 and 5, in some embodiments, the energy-saving air curtain cabinet further includes a wind screen 9, a lower end of the wind screen 9 is movably connected to the cabinet 1 and can be lifted relative to the cabinet 1, and when lifted, the wind screen 9 is located in front of the cooling cavity 101 and shields a lower portion of the cooling cavity 101. When the wind shield 9 rises, the cabinet body 1 can be effectively prevented from sucking excessive ambient air, and cold load loss caused by heat transfer of the wind curtain and the hot air in the external environment is avoided; by lowering the wind deflector 9 when the consumer desires to make a purchase, the wind deflector 9 is prevented from obstructing the consumer's selection of the goods. It should be noted that the wind deflector 9 only needs to be set to two height states, namely, fully raised and fully lowered, to meet the use requirement.

Referring to fig. 5, in some embodiments, the wind deflector 9 includes a lower wind deflector 901 extending along a horizontal direction and side wind deflectors 902 connected to two ends of the lower wind deflector 901, wherein the two side wind deflectors 902 extend along a vertical direction, and one side of the two side wind deflectors 902 facing away from the lower wind deflector 901 respectively abuts against two side screens of the cabinet 1. In this embodiment, the wind deflector 9 is concave, so that hot air in the external environment can be completely prevented from entering the cabinet 1 from the lower part and both sides. The height of the lower wind shield 901 is preferably 10 to 25cm, and the height of the side wind shield 902 is preferably 30 to 55cm.

In addition, in order to facilitate the adjustment and control of the extension plate 3, the air distribution plate 7 and the wind shield 9, referring to fig. 1, the energy-saving air curtain cabinet further comprises a first driving member 4 for driving the extension plate 3 to stretch and retract, a second driving member 8 for driving the air distribution plate 7 to move, and a third driving member 10 for driving the wind shield 9 to ascend and descend. It should be noted that, in this embodiment, as shown in fig. 1, the first driving part 4 and the second driving part 8 both adopt telescopic cylinders, the third driving part 10 is a driving mode in which a lead screw 1002 and a nut 1003 are matched, specifically, the driving mode includes a driving motor 1001, the lead screw 1002 and the nut 1003, the driving motor 1001 is installed in the cabinet body 1, the lead screw 1002 is disposed along a vertical direction, one end of the lead screw 1002 is fixedly connected to an output shaft of the driving motor 1001, the other end of the lead screw is rotatably connected to the cabinet body 1, the nut 1003 is in threaded connection with the periphery of the lead screw 1002 and is fixedly connected to one side of the wind shield 9, the lead screw 1002 is driven by the driving motor 1001 to rotate, the nut 1003 can move along the vertical direction, and further drives the wind shield 9 to move up and down, it should be noted that a guide groove (not shown in the figure) can be opened on the cabinet body 1 to guide the moving direction of the wind shield 9. It will be appreciated that other drives may be used by those skilled in the art as the first, second and third drives 4, 8, 10.

In some embodiments, in order to facilitate automatic control, referring to fig. 1, multiple layers of shelves 12 are arranged in the refrigerating chamber 101, each layer of shelf 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 chamber 101 is arranged in the refrigerating chamber 101; the cabinet body 1 is further provided with a controller 11, the controller 11 is respectively connected with the gravity sensor 13 and the temperature sensor 14 to acquire monitoring results of the gravity sensor 13 and the temperature sensor 14, and the controller 11 is further respectively connected with the first driving part 4, the second driving part 8 and the third driving part 10 to respectively control the first driving part 4, the second driving part 8 and the third driving part 10 to execute driving actions.

In some embodiments, in order to timely control the wind deflector 9 to descend so as to avoid obstructing the purchase of the goods by the consumer, 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 with the controller 11 so as to send a detection result to the controller 11, and the controller 11 controls the third driving member 10 to perform a 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 a person, so as to basically ensure that all persons can be detected, in this embodiment, the infrared detector 15 is specifically located between the first layer shelf 12 and the second layer shelf 12 from bottom to top.

Based on the energy-saving air curtain cabinet, the invention also 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 a preset replenishment quantity, a preset refrigeration temperature, a preset low-temperature refrigeration temperature and a preset medium-temperature refrigeration temperature. The control method of various modes of the energy-saving air curtain cabinet comprises the following steps:

(1) Fast cool down mode

When the commodity weight that the gravity sensor 13 that the controller 11 received monitored compares with the commodity weight of receiving before, and the increase amount of commodity weight when exceeding the predetermined replenishment volume, energy-conserving air curtain cabinet gets into the rapid cooling mode, specifically includes: 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 and the cavity 102, the controller 11 simultaneously controls the second driving member 8 to drive the air distribution plate 7 to move until the air outlet 104 is completely communicated with the first air duct 1031, and the controller 11 further controls the third driving member 10 to drive the air baffle plate 9 to lift, so that the temperature in the refrigerating chamber 101 reaches a 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 chamber 101.

When energy-conserving air curtain cabinet got into the rapid cooling mode, the air current that fan 2 produced all got into first wind channel 1031 and through the cooling of evaporimeter 5 for cold wind, then flows through air outlet 104, cools down and forms the air curtain to refrigerating chamber 101, and the deep bead 9 that rises can effectively prevent cold wind and run off.

(2) Energy saving mode of operation

When the temperature sensor 14 monitors that the temperature in the refrigerating chamber 101 reaches the preset refrigerating temperature, the energy-saving air curtain cabinet enters an energy-saving operation mode, which specifically includes: the controller 11 controls the first driving member 4 to drive the extension plate 3 to retract to three fifths of the maximum extension amount, the controller 11 simultaneously controls the second driving member 8 to drive the air distribution plate 7 to move to a position where the communication area between 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 plate 9 keeps a lifting state so as to enable the temperature in the refrigerating chamber 101 to be maintained at a 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 chamber 101.

When the energy-saving air curtain cabinet enters the energy-saving operation mode, part of air flow generated by the fan 2 enters the first air duct 1031 and is cooled by the evaporator 5 to be cold air, 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 at the air outlet 104 and flow out to form an air curtain so as to maintain the temperature in the refrigerating chamber 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 cryogenic storage, energy-conserving air curtain cabinet gets into the low temperature mode of operation, specifically includes: the controller 11 controls the first driving member 4 to drive the extension plate 3 to stretch and retract to four fifths of the maximum extension amount, the controller 11 simultaneously controls the second driving member 8 to drive the air distribution plate 7 to move until 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 plate 9 keeps a lifting state so that the temperature in the refrigerating chamber 101 reaches a preset low-temperature refrigerating temperature through the circulating flow of air flow generated by the fan 2 among the cavity 102, the air duct 103 and the refrigerating chamber 101. Note that the low-temperature refrigeration temperature is usually set to be in the range of 0 ℃ to 5 ℃.

When energy-conserving air curtain cabinet gets into low temperature operation mode, the air current that fan 2 produced mostly gets into first wind channel 1031 and is cold wind through evaporimeter 5 cooling, and the minority part gets into second wind channel 1032 as normal atmospheric temperature wind, and cold wind and normal atmospheric temperature wind collect and flow in air outlet 104 department, cool down and form the air curtain to cold storage chamber 101, and the deep bead 9 that rises can effectively prevent cold wind and run off.

(4) Medium temperature mode of operation

When the goods need to be stored at the medium temperature, the energy-saving air curtain cabinet enters a medium-temperature operation mode, which specifically comprises the following steps: the controller 11 controls the first driving element 4 to drive the extension plate 3 to stretch and retract to one fifth of the maximum extension amount, the controller 11 simultaneously controls the second driving element 8 to drive the air distribution plate 7 to move to a position where the communication area of 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 baffle plate 9 keeps a lifting state so that the temperature in the refrigerating chamber 101 reaches the preset medium-temperature refrigerating temperature through the circulating flow of air flow generated by the fan 2 among the cavity 102, the air duct 103 and the refrigerating chamber 101. The term "medium temperature storage" means that the storage temperature required for the commodity is between a low temperature and a 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 by the evaporator 5 to be cold air, 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 at the air outlet 104 and flow out, the cold storage cavity 101 is cooled to a relatively small degree, an air curtain is formed to maintain the temperature in the cold storage cavity 101, and the raised air baffle 9 can effectively prevent the cold air from losing.

It should be noted that the rapid cooling mode and the energy-saving operation mode are automatic modes, and the controller 11 can implement 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 instructed manually to realize control, wherein the instruction issuing mode specifically comprises the following steps: a low temperature operation control button and a medium temperature operation control button are correspondingly arranged on the controller 11, 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 further stores a preset stay time; under 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 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 lift.

Finally, it should be noted that: in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims (10)

1. An energy-conserving air curtain cabinet, characterized by, includes:

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 of the refrigerating cavity, and an air return opening is formed in the position, close to the front side, of the bottom of the refrigerating cavity; the cavity is positioned below the refrigerating cavity and 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;

a fan disposed within the cavity;

the air channel partition plate is fixedly arranged in the air channel and extends to the other end along one end of the air channel so as to partition the air channel into a first air channel and a second air channel;

the evaporator is arranged in the first air duct;

the extending plate is movably connected to one end, close to the cavity, of the air duct partition plate and can stretch relative to the air duct partition plate so as to change the communication area of the second air duct and the cavity; the communication area of the second air duct and the cavity is reduced along with the elongation of the extension plate; when the extension plate is completely extended out, the extension plate blocks the second air duct from the cavity;

the air dividing plate is arranged between one end, close to the air outlet, of the air channel dividing plate and the air outlet so as to enable the air outlet part to be communicated with the first air channel and the rest part to be communicated with the second air channel; the air distribution plate can move to distribute the communication areas of the air outlet and the first air channel and the second air channel respectively.

2. The energy-saving air curtain cabinet as claimed in claim 1, wherein the air duct extends from the rear of the refrigerating chamber to the upper part of the refrigerating chamber, the air duct partition plate includes a vertical partition plate located at the rear of the refrigerating chamber and a transverse partition plate located above the refrigerating chamber, the upper end of the vertical partition plate is connected to one end of the transverse partition plate, the lower end of the vertical partition plate extends downward to a position close to the cavity, and one end of the transverse partition plate, far away from the vertical partition plate, extends horizontally to a position 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 distribution plate is sleeved at one end, far away from the vertical partition plate, of the transverse partition plate and slides relative to the transverse partition plate along the horizontal direction, and the other end of the air distribution plate abuts 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 distribution plate so as to change the communication areas of the air outlet and the first air channel and the second air channel respectively.

3. The energy-saving air curtain cabinet as claimed in claim 2, wherein the air dividing plate has a double-step shape, the angle of the upper step is 135 °, and the angle of the lower step is 150 °.

4. The energy-saving air curtain cabinet as claimed in any one of claims 1 to 3, 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 located in front of the refrigerating chamber and shields the lower part of the refrigerating chamber when lifted.

5. The energy-saving air curtain cabinet as claimed in claim 4, wherein the wind screen includes a lower wind screen portion extending along a horizontal direction and side wind screen portions connected to two ends of the lower wind screen portion, the two side wind screen portions both extend along a vertical direction, and a side of each of the two side wind screen portions facing away from the lower wind screen portion abuts against the two side screens of the cabinet body respectively.

6. The energy-saving air curtain cabinet as claimed in claim 4, further comprising a first driving member for driving the extension plate to extend and retract, a second driving member for driving the air dividing plate to move, and a third driving member for driving the wind shielding plate to lift and lower.

7. The energy-saving air curtain cabinet as claimed in claim 6, wherein a plurality of layers of shelves are arranged in the refrigerating chamber, each layer of shelf 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 chamber is arranged in the refrigerating chamber; the cabinet body still installs the controller, the controller with gravity sensor and temperature sensor connect respectively in order to acquire gravity sensor and temperature sensor's monitoring result, the controller still with first driving piece, second driving piece and third driving piece are connected respectively, in order to control respectively first driving piece, second driving piece and third driving piece carry out the drive action.

8. The energy-saving air curtain cabinet as claimed in claim 7, 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 to 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.

9. The control method of the energy-saving air curtain cabinet as claimed in any one of claims 7 or 8, wherein the energy-saving air curtain cabinet comprises a rapid cooling mode, an energy-saving mode, a low temperature mode and a medium temperature mode, and the controller stores a preset replenishment quantity, a preset refrigeration temperature, a preset low temperature refrigeration temperature and a preset medium temperature refrigeration temperature;

when the controller is received the commodity weight of gravity sensor monitoring compares rather than the commodity weight of its previous receipt, and commodity weight increment exceeds when predetermineeing the replenishment volume, energy-conserving air curtain cabinet gets into the rapid cooling mode specifically includes: 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 distribution 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 baffle 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 the energy-saving operation mode, and the method specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to retract to an extent which is three fifths of the maximum extent, and simultaneously controls the second driving piece to drive the air distribution plate to move to a position where the communication area of the air outlet and the first air channel is three quarters of the total area of the air outlet, and the air baffle plate keeps a lifting state, so that the temperature in the refrigerating cavity is maintained at the preset refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air channel and the refrigerating cavity;

when the goods need low-temperature storage, the energy-saving air curtain cabinet enters the low-temperature operation mode, and the method specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to stretch and retract to a length which is four fifths of the maximum length, the controller simultaneously controls the second driving piece to drive the air distribution plate to move to a position where the communication area of the air outlet and the first air channel is one half of the total area of the air outlet, and the air baffle plate keeps a rising state so that the temperature in the refrigerating cavity reaches the preset low-temperature refrigerating temperature through the circulating flow of air flow generated by the fan among the cavity, the air channel and the refrigerating cavity;

when the commodity needs medium-temperature storage, the energy-saving air curtain cabinet enters the medium-temperature operation mode, and the method specifically comprises the following steps: the controller controls the first driving piece to drive the extension plate to stretch and contract to one fifth of the maximum extension amount, the controller simultaneously controls the second driving piece to drive the air distribution plate to move to the air outlet and the communication area of the first air channel is one fourth of the total area of the air outlet, and the air baffle is kept in a rising 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 channel and the refrigerating cavity.

10. The control method of the energy-saving air curtain cabinet as claimed in claim 9, wherein a preset dwell time is further stored in the controller, and in the energy-saving operation mode, the low-temperature operation mode and the medium-temperature operation mode, when the continuous time for the infrared detector to detect that someone stands in the refrigeration cavity exceeds the preset dwell time, the controller controls the third driving member to drive the wind deflector 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.

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