WO2015165306A1 - Réservoir de stockage intelligent - Google Patents

Réservoir de stockage intelligent Download PDF

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Publication number
WO2015165306A1
WO2015165306A1 PCT/CN2015/074389 CN2015074389W WO2015165306A1 WO 2015165306 A1 WO2015165306 A1 WO 2015165306A1 CN 2015074389 W CN2015074389 W CN 2015074389W WO 2015165306 A1 WO2015165306 A1 WO 2015165306A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
storage tank
switch
output end
voltage
Prior art date
Application number
PCT/CN2015/074389
Other languages
English (en)
Chinese (zh)
Inventor
吕孝乐
Original Assignee
深圳市乐满天科技发展有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市乐满天科技发展有限公司 filed Critical 深圳市乐满天科技发展有限公司
Publication of WO2015165306A1 publication Critical patent/WO2015165306A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes

Definitions

  • the utility model belongs to the field of small consumer goods manufacturing, in particular to a smart storage tank.
  • the shelf life of most food, medicine or skin care products is printed on the outer packaging or instructions of the product. Once the consumer disassembles the outer packaging for consumption or use, it often causes the forgetting of the product shelf life due to the inability to save the outer packaging or the manual. This increases the risk of eating or using expired products, which can be life-threatening in severe cases.
  • the embodiment of the present invention is realized by an intelligent storage tank comprising a storage tank container outer casing and a storage tank surface cover, the storage tank surface cover having a display unit for displaying the shelf life of the articles in the tank, the display unit Embedded in the outer surface of the storage tank cover.
  • the storage tank container outer casing material is silicon dioxide
  • the storage tank cover material is PVC
  • the display unit is a manually adjustable mechanical digital label or an electronic circuit.
  • the display unit comprises:
  • a voltage stabilizing circuit that steps down and stabilizes the first power voltage to output a second power voltage, an input end of the voltage stabilizing circuit is connected to the battery positive pole, and the battery negative pole is grounded;
  • a power terminal of the processing circuit is connected to an output end of the voltage stabilizing circuit, and a plurality of display output ends of the processing circuit are respectively connected to a plurality of display control ends of the display screen;
  • a display driving circuit wherein a power supply end of the display driving circuit is connected to an output end of the voltage stabilizing circuit, and a first output end to a third output end of the display driving circuit and a first display driving end of the processing circuit respectively Connecting to the third display driver end;
  • the power supply end of the circuit is connected to the output end of the voltage stabilizing circuit, and the first output end to the fourth output end of the circuit are respectively connected to the first operating end of the processing circuit a fourth operation end is connected, and the control end of the circuit-making circuit is exposed on an outer surface of the storage tank cover;
  • a crystal oscillation circuit wherein an input end and an output end of the crystal oscillation circuit are respectively connected to a clock input end and a clock output end of the processing circuit;
  • a reset circuit wherein a power terminal of the reset circuit is connected to an output end of the voltage stabilizing circuit, and an output end of the reset circuit is connected to a reset end of the processing circuit.
  • the display unit further includes:
  • a voltage detecting circuit wherein the first detecting end and the second detecting end of the voltage detecting circuit are respectively connected to the first voltage detecting end and the second voltage detecting end of the processing circuit;
  • a power supply end of the storage circuit is connected to an output end of the voltage stabilization circuit, and a data end and a clock end of the storage circuit are respectively connected to a first read/write end and a second read/write end of the processing circuit .
  • processing circuit includes:
  • the fifth pin and the sixth pin of the single chip are respectively a first read/write end and a second read/write end of the processing circuit, and the seventh pin and the eighth pin of the single chip respectively are the processing a first voltage detecting end and a second voltage detecting end of the circuit, wherein the eleventh to thirteenth pins of the single chip are respectively a first display driving end to a third display driving end of the processing circuit, and the single chip microcomputer
  • the fourteenth to seventeenth pins are respectively the first to fourth operating ends of the processing circuit, and the eighteenth pin of the single chip is the power supply end of the processing circuit and the nineteenth pin
  • the twentieth pin and the twenty-first pin of the single chip are the clock output end of the processing circuit and the clock input end, and the twenty-third pin of the single chip passes the resistor R9 and the first The second power supply voltage is connected, the twenty-fourth pin of the single chip is grounded, the twenty-fifth pin of the single chip is the reset end of the processing circuit, and the twenty-seventh pin of
  • the single chip microcomputer is an OTP8819 type microprocessor.
  • the voltage stabilizing circuit includes:
  • the input end of the voltage stabilizing chip is connected to the input end of the voltage stabilizing circuit and the one end of the capacitor C1, and the ground end of the voltage stabilizing chip is grounded at the same time as the other end of the capacitor C1.
  • the output terminal outputs the second power voltage for the output end of the voltage stabilizing circuit, and the output end of the voltage stabilizing chip is also grounded through the capacitor C2.
  • the built-in circuit includes:
  • a first switch a second switch, a third switch, and a fourth switch
  • a conducting end of the first switch, the second switch, the third switch, and the fourth switch is simultaneously a power end of the circuit, the first switch, the second switch
  • the third switch and the other conductive end of the fourth switch are respectively a first output end, a second output end, a third output end, and a fourth output end of the circuit according to the circuit, the first
  • the control terminals of the switch, the second switch, the third switch, and the fourth switch are respectively user operating terminals of the circuit-making circuit.
  • the crystal oscillation circuit includes:
  • One end of the crystal oscillator is grounded through the capacitor C7 at the output end of the crystal oscillator circuit, and the other end of the crystal oscillator is grounded through the capacitor C8 at the input end of the crystal oscillator circuit.
  • the reset circuit includes:
  • One end of the resistor R10 is a power terminal of the reset circuit, and the other end of the resistor R10 is an output end of the reset circuit grounded through the capacitor C6.
  • the display screen is an LCD display, an LED display or a dot matrix screen.
  • the display driving circuit includes:
  • One end of the resistor R2, the resistor R3, and the resistor R4 are simultaneously the power terminal of the display driving circuit, and the other ends of the resistor R2, the resistor R3, and the resistor R4 are respectively illuminated with the red light.
  • a diode, the green light emitting diode, and an anode of the blue light emitting diode, wherein the red light emitting diode, the green light emitting diode, and the cathode of the blue light emitting diode are respectively a first output end of the display driving circuit , a second output end, and a third output end.
  • the voltage detection circuit includes:
  • the input end of the switch tube is connected to the second detection end of the voltage detecting circuit and the end of the resistor R4, and the other end of the resistor R4 is connected to the control end of the switch tube, and the control of the switch tube
  • the terminal is also grounded through the resistor R5, and the output end of the switch tube is grounded through the resistor R6 for the first detecting end of the voltage detecting circuit.
  • the storage circuit includes:
  • One end of the resistor R7 and the resistor R8 are simultaneously connected to the power end of the memory circuit and the power end of the memory chip, and the other end of the resistor R7 is the data end of the memory circuit and the memory chip.
  • the other end of the resistor R8 is connected to the clock end of the memory chip, and the enable end, the ground end and the address end of the memory chip are grounded.
  • the user After the user puts the item into the storage tank, the user records the effective end date of the item in the tank by operating the display unit provided on the cover of the storage tank, so that the user can know at any time whether the item in the tank is within the shelf life. Addressing the current problem of safe storage of products that have no shelf life records reduces the risk of eating or using expired products.
  • FIG. 1 is a structural view of an intelligent storage tank provided by an embodiment of the present invention.
  • FIG. 2 is a structural diagram of a dial display unit of an intelligent storage tank according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of a scale display unit of an intelligent storage tank according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a display unit in an electronic intelligent storage tank according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing the display of an electronic intelligent storage tank display screen according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an example of a display unit in an electronic intelligent storage tank according to an embodiment of the present invention.
  • the effective end date of the item in the can is recorded by operating the display unit provided on the cover of the storage tank so that the user can know at any time whether the item in the can is within the shelf life.
  • FIG. 1 shows the structure of an intelligent storage tank provided by an embodiment of the present invention. For the convenience of description, only parts related to the present invention are shown.
  • the storage tank cover 102 has a display unit 103 for displaying the shelf life of the articles in the can. And embedded in the outer surface of the storage tank cover 102.
  • the warranty period displayed by the display unit 103 includes the effective end date of the article, the time of the current distance end date, and the battery power.
  • the storage tank container casing 101 may be made of a silica material, and the storage tank surface cover 102 may be made of a PVC material.
  • the display unit 103 can be implemented by manually adjustable mechanical digital tags, for example:
  • the manually adjustable mechanical digital label can be realized by a dial and a pointer having a number of 12 months, and there is a scale corresponding to the number of days in the month between every two adjacent month numbers in the dial, such as February to There are 29 scales between March and 31 scales between March and April, by manually dialing the pointer to the scale of the month and date corresponding to the end of warranty date of the food or medicine that you want to identify.
  • the dial can be made of PVC or a light weight sheet metal material.
  • dial with the month and date can also be replaced by a scale.
  • the shape and material are not limited herein.
  • the user After the user puts the item into the storage tank, the user records the effective end date of the item in the tank by operating the display unit provided on the cover of the storage tank, so that the user can know at any time whether the item in the tank is within the shelf life. Addressing the current problem of safe storage of products that have no shelf life records reduces the risk of eating or using expired products.
  • FIG. 4 shows the structure of a display unit in an electronic intelligent storage tank provided by an embodiment of the present invention. For the convenience of description, only parts related to the present invention are shown.
  • the display unit 103 can also be implemented by using an electronic circuit, and specifically includes:
  • a voltage stabilizing circuit 11 for stepping down the first power supply voltage and outputting a second power supply voltage, the input end of the voltage stabilizing circuit 11 is connected to the positive electrode of the battery, and the negative electrode of the battery is grounded;
  • the power supply end of the processing circuit 16 is connected to the output end of the voltage stabilizing circuit 11, and the plurality of display output ends of the processing circuit 16 are respectively connected to the plurality of display control ends of the display screen 10;
  • a display driving circuit 12 the power supply end of the display driving circuit 12 is connected to the output end of the voltage stabilizing circuit 11, and the first output end to the third output end of the display driving circuit 12 are respectively connected to the first display driving end of the processing circuit 16 Three display driver connection;
  • the power supply terminal of the circuit 19 is connected to the output terminal of the voltage stabilization circuit 11, and the first output terminal to the fourth output terminal of the circuit 19 are respectively connected to the first to fourth terminals of the processing circuit 16
  • the operating end is connected, and the control end of the circuit 19 is exposed on the outer surface of the storage tank cover 102;
  • a crystal oscillation circuit 15 an input end and an output end of the crystal oscillation circuit 15 are respectively connected to a clock input end and a clock output end of the processing circuit 16;
  • the reset circuit 17 has a power supply terminal connected to the output terminal of the voltage stabilization circuit 11, and an output terminal of the reset circuit 17 connected to the reset terminal of the processing circuit 16.
  • the current date and the effective end of the product are input through the button of the outer surface of the storage can lid 102 (the control end of the circuit 19).
  • the date, processing circuit 16 calculates the effective number of days from the current date of the product, and displays on the display 10 the effective end date of the product and the remaining effective days, see Figure 5, and displayed on display 10 every 24 hours.
  • the effective days are automatically reduced by one day until the number is “0”, which means that the items or food stored in the tank have passed the shelf life, so that the shelf life of the product can be known at any time without the outer packaging or the description of the shelf life. To ensure safe use.
  • control end of the circuit 19 can be implemented by using a PVC button, and the circuit board and the device can be implemented by using PCBA.
  • the crystal oscillation circuit 15 provides a clock signal to the processing circuit 16
  • the reset circuit 17 provides a reset signal to the processing circuit 16
  • the user circuit 11 transmits a user operation command to the processing circuit 16, and the voltage stabilization circuit 11 is
  • the circuit module provides a stable second supply voltage.
  • the display unit 103 may further include:
  • a voltage detecting circuit 13 the first detecting end and the second detecting end of the voltage detecting circuit 13 are respectively connected to the first voltage detecting end and the second voltage detecting end of the processing circuit 16;
  • the memory circuit 14 is connected to the output end of the voltage stabilizing circuit 11.
  • the data end and the clock end of the memory circuit 14 are respectively connected to the first read/write terminal and the second read/write terminal of the processing circuit 16.
  • the voltage detecting circuit 13 can also be added to detect the change of the second power voltage, that is, the change of the battery power, and display the change of the battery power through the display screen 10, so that the user can know the storage tank at any time. The power is changed, and the battery is replaced at the same time to ensure normal use.
  • the storage circuit 14 can record the power-off time, and when the power is turned on again, the last valid product end date can be displayed to the display screen 10 through the processing circuit 16.
  • the electronic circuit set in the storage tank cover enters the countdown calculation state after the start date and the effective end date are input through the operation buttons provided on the storage tank cover, and
  • the display on the storage tank cover displays the effective end date, time, remaining effective days and battery power of the contents in the tank in real time, so that the user can know whether the contents of the can are within the warranty period and also use different colors.
  • the LED illuminates to more intuitively identify whether the items in the can are within the validity period, solves the current problem of safe storage of products recorded without shelf life, and reduces the risk of eating or using expired products.
  • FIG. 6 shows an example circuit structure of a display unit in an electronic smart storage tank provided by an embodiment of the present invention. For convenience of description, only parts related to the present invention are shown.
  • the processing circuit 16 includes:
  • the 5 pins and 6 pins of the single chip U1 are respectively the first read/write terminal and the second read/write terminal of the processing circuit 16, and the 7 pins and 8 pins of the single chip U1 are respectively the first voltage detecting end of the processing circuit 16 and The second voltage detecting end, the 11-13 pins of the single chip U1 are respectively the first display driving end to the third display driving end of the processing circuit 16, and the 14-17 pins of the single chip U1 are respectively the first operating end of the processing circuit 16.
  • the 18-pin of the single chip U1 is connected to the 19-pin VST of the processing circuit 16, and the 20-pin OSOC of the single-chip U1 and the 21-pin OSCI are the clock output and the clock input of the processing circuit 16.
  • the 23-pin OSCXI of the single-chip U1 is connected to the second power supply voltage VCC through the resistor R9, the 24-pin GND of the single-chip U1 is grounded, and the 25-pin RESET of the single-chip U1 is the processing circuit.
  • the reset terminal of 16 is connected to the 28 pin of the single chip U1 through the capacitor C3 through the capacitor C3, and the 29 pin of the single chip U1 is connected to the second power supply voltage VCC through the capacitor C5, the single chip U1
  • the 30 pin is connected to the second power supply voltage VCC
  • the 31 pin of the single chip U1 is connected to the second power supply voltage VCC through the capacitor C4
  • the 32-36 pins COM1-COM5 and 38-60 pins SEG1-SEG23 of the single chip U1 are processed.
  • the 14-17 pin of the single chip U1 is the ordinary I/O port of the single chip microcomputer, and the 27-31 pin is the LCD drive port of the single chip microcomputer.
  • VDD, VST, TEST, GND, OSCI, and PA0 terminals of the single chip U1 can be used as a programming interface.
  • the single chip U1 can be a microprocessor of the OTP8819 model.
  • the voltage stabilizing circuit 11 includes:
  • the input terminal Vin of the voltage regulator chip U3 is connected to the input end of the voltage regulator circuit 11 and the one end of the capacitor C1.
  • the ground terminal GND of the voltage regulator chip U3 and the other end of the capacitor C1 are grounded at the same time, and the output terminal Vout of the voltage regulator chip U3 is stable.
  • the output terminal of the voltage circuit 11 outputs a second power voltage VCC, and the output terminal of the voltage regulator chip U3 is also grounded through the capacitor C2.
  • the first power supply voltage VDD can be provided by three 1.5V batteries.
  • the regulator chip U3 can use the HT7130 regulator chip.
  • the circuit 19 includes:
  • a conductive terminal of the first switch K1, the second switch K2, the third switch K3, and the fourth switch K4 is simultaneously a power supply end of the circuit 19, and the first switch K1, the second switch K2, and the third switch K3,
  • the other conductive ends of the four switches K4 are respectively a first output end, a second output end, a third output end, and a fourth output end of the circuit 19, and the first switch K1, the second switch K2, and the third switch K3
  • the control terminals of the fourth switch K4 are respectively user operating terminals of the circuit 19.
  • the first switch K1 to the fourth switch K4 are respectively used as a cancel key (reset key), a decrease key, an increase key, and an open key (confirmation key) for the user to operate.
  • the first switch, the second switch, the third switch, and the fourth switch may be mechanical switches or touch button switches.
  • the crystal oscillation circuit 15 includes:
  • One end of the crystal oscillator Y1 is a first output end of the crystal oscillation circuit 15 and is grounded through a capacitor C7.
  • the other end of the crystal oscillator Y1 is a second output end of the crystal oscillation circuit 15 grounded through a capacitor C8.
  • the reset circuit 17 includes:
  • One end of the resistor R10 is the power supply terminal of the reset circuit 17, and the other end of the resistor R10 is the output terminal of the reset circuit 17 grounded through the capacitor C6.
  • the display driving circuit 12 includes:
  • resistor R2 One end of the resistor R2, the resistor R3, and the resistor R4 are simultaneously the power terminal of the display driving circuit 12.
  • the other ends of the resistor R2, the resistor R3, and the resistor R4 are respectively connected to the anode of the red LED RLED, the green LED, and the blue LED BLED. Connection, red LED RLED, green LED
  • the cathodes of the GLED and the blue light emitting diode BLED are respectively a first output end, a second output end, and a third output end of the display driving circuit 12.
  • the display screen 10 can be an LCD display screen or a dot matrix screen or an LED display screen.
  • the voltage detecting circuit 13 includes:
  • the input end of the switch tube Q1 is connected to the second detection end of the voltage detecting circuit 13 and the end of the resistor R4, the other end of the resistor R4 is connected to the control end of the switch tube Q1, and the control end of the switch tube Q1 is also grounded through the resistor R5, the switch The output end of the tube Q1 is the first detecting end of the voltage detecting circuit 13 and is grounded via a resistor R6.
  • the switch tube Q1 can be implemented by a PNP type triode or a MOS tube, the emitter of the PNP type triode is the input end of the switch tube, and the collector of the PNP type triode is the output end of the switch tube, PNP type.
  • the base of the triode is the control end of the switching tube.
  • the storage circuit 4 includes:
  • One end of the resistor R7 and the resistor R8 are simultaneously connected to the power terminal of the memory circuit 4 and the power terminal of the memory chip U2, and the other end of the resistor R7 is connected to the data terminal of the memory circuit 4 and the data terminal SDA of the memory chip U2, and the other resistor R8
  • the clock terminal of the memory circuit 4 is connected to the clock terminal SCL of the memory chip U2, the enable terminal WP of the memory chip U2 is grounded, the ground terminal GND of the memory chip U2 is grounded, and the address terminals A0, A1, and A3 of the memory chip U2 are connected. Ground.
  • the memory chip U2 can be a 24C02 type memory chip.
  • the effective end date, start date, and hour and minute are always automatically saved (unless the reset button is pressed).
  • the effective end date and hour and minute are still stored when the battery is replaced.
  • the processing circuit 16 defaults to the previously entered valid end date and hours and minutes.
  • the start date is: 16-01-2014
  • the time is: 17:23
  • the effective end date is: On 2014-3-16
  • the display only prompts to re-enter the current date. You do not need to re-enter the valid end date and hours, minutes, and then press and hold the "confirm" button for 2 seconds, restart the calculation of the countdown, the calculation time from 17:23 of 25-02-2014 to the end date of 2014-3-16 17:23.
  • the three LEDs have a flashing function.
  • the “on key (confirmation key)” is pressed, the three LEDs start to circulate slowly.
  • the remaining days are less than zero days, the red LED (RLED) starts to flash quickly, blue.
  • the LED (BLED) and the green LED (GLED) do not work.
  • the "on key (confirmation key)” is pressed again, all the LEDs are turned off (the LED is automatically turned off after 40 seconds), that is, when the red LED flashes, the item has been After the shelf life, when the red, green and blue tri-color LEDs gradually become darker and brighter, the items are in the shelf life.
  • the display can also display changes in battery power in real time.
  • the storage tank can also be used in the refrigerator, that is, it can operate normally in an environment of minus 5 degrees.
  • the electronic circuit set in the storage tank cover enters the countdown calculation state after the start date and the effective end date are input through the operation buttons provided on the storage tank cover, and
  • the display on the storage tank cover displays the effective end date, time, remaining effective days and battery power of the contents in the tank in real time, so that the user can know whether the contents of the can are within the warranty period and also use different colors.
  • the LED illuminates to more intuitively identify whether the items in the can are within the validity period, solves the current problem of safe storage of products recorded without shelf life, and reduces the risk of eating or using expired products.

Abstract

L'invention porte sur un réservoir de stockage intelligent, lequel réservoir comprend un boîtier de récipient de réservoir de stockage (101) et un capot de surface de réservoir de stockage (102). Le capot de surface de réservoir de stockage (102) comporte une unité d'affichage (103) pour afficher la période de garantie de qualité d'un article dans le réservoir, et l'unité d'affichage (103) est incorporée dans la surface externe du capot de surface de réservoir de stockage (102). Le réservoir de stockage intelligent peut enregistrer la période de garantie de qualité d'un article dans le réservoir par l'actionnement de l'unité d'affichage disposée sur le capot de surface de réservoir de stockage après qu'un utilisateur a disposé l'article dans le réservoir de stockage, de telle sorte que l'utilisateur peut savoir à tout moment si l'article dans le réservoir se trouve ou non dans la période de garantie de qualité.
PCT/CN2015/074389 2014-04-30 2015-03-17 Réservoir de stockage intelligent WO2015165306A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201420222055.2U CN204021505U (zh) 2014-04-30 2014-04-30 一种智能存储罐
CN201420222055.2 2014-04-30

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Publication Number Publication Date
WO2015165306A1 true WO2015165306A1 (fr) 2015-11-05

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CN (1) CN204021505U (fr)
WO (1) WO2015165306A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204021505U (zh) * 2014-04-30 2014-12-17 乐满天国际集团有限公司 一种智能存储罐
CN106241037B (zh) * 2016-08-31 2018-02-27 贾笑书 一种能显示保质期的智能瓶盖的3d打印制造方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
US6903874B1 (en) * 2003-07-30 2005-06-07 Don S. Karterman Interactive audio and visual display
GB2440567A (en) * 2006-08-03 2008-02-06 Andre St Clair A dial for indicating information on a container.
CN201052884Y (zh) * 2007-06-01 2008-04-30 程立忠 一种食品或药品容器
CN202321188U (zh) * 2011-11-16 2012-07-11 上海理工大学 一种具有保质期期限提醒功能的智能保鲜盒
CN204021505U (zh) * 2014-04-30 2014-12-17 乐满天国际集团有限公司 一种智能存储罐

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6903874B1 (en) * 2003-07-30 2005-06-07 Don S. Karterman Interactive audio and visual display
GB2440567A (en) * 2006-08-03 2008-02-06 Andre St Clair A dial for indicating information on a container.
CN201052884Y (zh) * 2007-06-01 2008-04-30 程立忠 一种食品或药品容器
CN202321188U (zh) * 2011-11-16 2012-07-11 上海理工大学 一种具有保质期期限提醒功能的智能保鲜盒
CN204021505U (zh) * 2014-04-30 2014-12-17 乐满天国际集团有限公司 一种智能存储罐

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