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CN111877916A - Freezer induction door with adjustable - Google Patents

Freezer induction door with adjustable Download PDF

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Publication number
CN111877916A
CN111877916A CN202010549477.0A CN202010549477A CN111877916A CN 111877916 A CN111877916 A CN 111877916A CN 202010549477 A CN202010549477 A CN 202010549477A CN 111877916 A CN111877916 A CN 111877916A
Authority
CN
China
Prior art keywords
cold storage
door
fixedly connected
control box
adjustable
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202010549477.0A
Other languages
Chinese (zh)
Inventor
徐祥勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Wuyou Food Co ltd
Original Assignee
Anhui Wuyou Food Co ltd
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 Anhui Wuyou Food Co ltd filed Critical Anhui Wuyou Food Co ltd
Priority to CN202010549477.0A priority Critical patent/CN111877916A/en
Publication of CN111877916A publication Critical patent/CN111877916A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00Doors, windows, or like closures for special purposes; Border constructions therefor
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/70Power-operated mechanisms for wings with automatic actuation
    • E05F15/73Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/70Power-operated mechanisms for wings with automatic actuation
    • E05F15/77Power-operated mechanisms for wings with automatic actuation using wireless control
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00Special arrangements or measures in connection with doors or windows
    • E06B7/28Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/02Doors; Covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/02Doors; Covers
    • F25D23/028Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00Arrangement or mounting of control or safety devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Refrigerator Housings (AREA)

Abstract

The invention provides an adjustable cold storage induction door, and relates to the technical field of automation. This freezer induction door with adjustable, including control box, mounting bracket, mount and two mounting panels, control box, mounting bracket, mount and two mounting panels all with wall fixed connection, the inside of control box is provided with wireless receiver and WIFI receiver, wireless receiver and WIFI receiver all with the inside wall fixed connection of control box, the top fixedly connected with support frame of mounting bracket, the top fixedly connected with gear motor of support frame, two the positive surface of mounting panel all rotates through the pivot and is connected with the synchronizing wheel. When an operator passes in and out the refrigeration house including the transportation equipment, the device can realize quick opening and closing operation of the refrigeration house door, so that not only is the manpower operation saved, but also the energy waste caused by the outward diffusion of the refrigeration house cold air is greatly reduced.

Description

Freezer induction door with adjustable
Technical Field
The invention relates to the technical field of automation, in particular to an adjustable cold storage induction door.
Background
A cold storage, which is one type of refrigeration equipment. The cold storage is a constant temperature and humidity storage device which is used for creating an environment with different outdoor temperature or humidity by manual means and is also used for food, liquid, chemical engineering, medicine, vaccines, scientific experiments and other articles, and is usually positioned near a transportation port or a place of origin. Compared with the refrigerator, the refrigeration house has larger refrigeration area and a common refrigeration principle.
Traditional cold storage door is at the switch in-process, when needs the staff to open corresponding transportation equipment business turn over freezer, needs someone to go the switch door manually, and this process is extravagant manpower not only, closes the cold storage door and causes the air conditioning to run off moreover often because of the manpower untimely, extravagant energy, current market controller can't satisfy the demand moreover.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an adjustable cold storage induction door, which solves the problems that in the opening and closing process of many traditional cold storage doors, when workers need to open corresponding transportation equipment to enter and exit a cold storage, the doors need to be opened and closed manually, the process wastes manpower, cold air is lost due to the fact that the cold storage doors are closed in time when the manpower is not timely, the energy is wasted, and the requirements cannot be met by the existing market controller.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an adjustable cold storage induction door comprises a control box, a mounting rack, a fixing rack and two mounting plates, wherein the control box, the mounting rack, the fixing rack and the two mounting plates are fixedly connected with a wall surface, a wireless receiver and a WIFI receiver are arranged inside the control box, the wireless receiver and the WIFI receiver are both fixedly connected with the inner side wall of the control box, the top of the mounting rack is fixedly connected with a supporting frame, the top of the supporting frame is fixedly connected with a speed reducing motor, the front surfaces of the two mounting plates are rotatably connected with synchronizing wheels through rotating shafts, the outer surfaces of the two synchronizing wheels are sleeved with transmission parts, the two synchronizing wheels are connected through transmission parts, one of the synchronizing wheels is provided with an electromagnetic clutch on the front surface, the electromagnetic clutch is electrically connected with a controller of the speed reducing motor through a wire, the front surface of the fixing rack is fixedly connected, the below of fixed guide is provided with the cold storage door, the equal fixedly connected with connecting plate in position that the top of cold storage door and be close to both sides, two the one end that the cold storage door was kept away from to the connecting plate all is connected with the gyro wheel through the pivot rotation, two the top of gyro wheel all laminates mutually with fixed guide's interior top, two the bottom of gyro wheel all laminates mutually with the driving medium.
Preferably, the transmission part is a transmission belt, so that power transmission between the two synchronous wheels is facilitated.
Preferably, a guide groove is formed in the fixed guide rail, and the two rollers are rotatably connected in the guide groove to guide the movement of the rollers.
Preferably, the outer surface of the transmission member is fixedly connected with a light barrier, and when the light barrier moves along with the transmission member, the corresponding photoelectric sensor is blocked at a specific position to generate different electric signals, so that the equipment can conveniently make different reactions.
Preferably, the top of driving medium is divided and is provided with first photoelectric sensor and second photoelectric sensor, first photoelectric sensor and second photoelectric sensor all with wall fixed connection, generate corresponding instruction with the barn door cooperation.
Preferably, a third photoelectric sensor is arranged at the left side of the cold storage door and fixedly connected with the wall surface, the third photoelectric sensor is detected to be shielded in the door closing action, the door closing action is stopped at the moment, the door opening action is restarted, and the staff is prevented from being injured by clamping.
Preferably, the transmission part and the cold storage door are respectively provided with a first mobile detection sensor and a second mobile detection sensor above, the first mobile detection sensor is fixedly connected with the inner top of an eave, and the second mobile detection sensor is fixedly connected with the wall surface, so that the motion state and the distance of the transmission part and the cold storage door can be monitored in real time.
The working principle is as follows: when the refrigerator door is used, when the wireless receiver receives a door opening instruction, the door opening action is started, the electromagnetic clutch is started, the reducing motor drives the synchronizing wheel to rotate, the transmission piece sleeved on the outer surface of the synchronizing wheel drives the roller wheel to rotate in the fixed guide rail, under the guiding action of the guide groove, power is transmitted to the refrigerator door through the two connecting plates, the refrigerator door is in a door opening state at the moment, the light barrier is fixedly connected to the outer surface of the transmission piece and moves along with the transmission piece at the moment, when the first photoelectric sensor detects the light barrier, the wireless receiver receives the instruction and sends out an electric signal to stop the reducing motor and the electromagnetic clutch, the refrigerator door is in a full-open state at the moment, and the wireless receiver in the state continuously reads electric signals sent by the first mobile detection sensor, the third photoelectric sensor and the second mobile detection sensor, if the wireless receiver does not receive the non-blocking signal within the continuous second, the door closing action is started, at the moment, the electromagnetic clutch is started and the speed reducing motor is reversed, when the second photoelectric sensor detects the light barrier, the wireless receiver receives the electric signal sent by the second photoelectric sensor, and sends out an instruction to close the speed reducing motor and the electromagnetic clutch, when operators including transportation equipment enter and exit the refrigeration house, the device can realize the rapid opening and closing operation of the cold storage door, not only saves the manpower operation, but also greatly reduces the energy waste caused by the outward diffusion of cold air of the cold storage, if the third photoelectric sensor is detected to be shielded in the door closing action, the door closing action is stopped, the door opening action is restarted, the device can effectively avoid accidental injury to operators and transportation equipment when the cold storage door is closed, and ensures the safety of the device in work.
(III) advantageous effects
The invention provides an adjustable cold storage induction door. The method has the following beneficial effects:
1. when the first photoelectric sensor detects the light barrier, the wireless receiver receives an instruction and sends out an electric signal to stop the speed reducing motor and the electromagnetic clutch, at the moment, the cold storage door is in a fully open state, the wireless receiver in the state continuously reads the electric signals sent by the first mobile detection sensor, the third photoelectric sensor and the second mobile detection sensor, if the wireless receiver does not receive an unblocking signal within 10 seconds continuously, the door closing action is started, the electromagnetic clutch is started and the speed reducing motor is reversed, when the second photoelectric sensor detects the light barrier, the wireless receiver receives the electric signal sent by the second sensor and sends out an instruction to close the speed reducing motor and the electromagnetic clutch, when an operator including transportation equipment enters or exits the cold storage, the device can realize quick on-off operation of the cold storage door, not only saves the manual operation, but also greatly reduces the energy waste caused by the outward diffusion of the cold air of the refrigeration house.
2. This freezer induction door with adjustable if detect the third photoelectric sensor and be sheltered from in the action of closing the door, stop the action of closing the door this moment, restart the action of opening the door, can effectually avoid the freezer door to the accidental injury of operating personnel and transportation equipment when closing, ensured the security of the device at the during operation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the position relationship between the second motion detection sensor and the door of the cold storage according to the present invention;
wherein, 1, a control box; 2. a reduction motor; 3. an electromagnetic clutch; 4. a light barrier; 5. a first photosensor; 6. a transmission member; 7. a first movement detection sensor; 8. a second photosensor; 9. a synchronizing wheel; 10. a third photosensor; 11. a second movement detection sensor; 12. fixing the guide rail; 13. a cold storage door; 14. a wireless receiver; 15. a WIFI receiver; 16. a mounting frame; 17. a support frame; 18. a connecting plate; 19. a guide groove; 20. a roller; 21. a fixed mount; 22. and (7) mounting the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-3, an embodiment of the invention provides an adjustable cold storage induction door, which comprises a control box 1, an installation frame 16, a fixed frame 21 and two installation plates 22, wherein the control box 1, the installation frame 16, the fixed frame 21 and the two installation plates 22 are all fixedly connected with a wall surface, a wireless receiver 14 and a WIFI receiver 15 are arranged inside the control box 1, the wireless receiver 14 and the WIFI receiver 15 are both fixedly connected with the inner side wall of the control box 1, the top of the installation frame 16 is fixedly connected with a support frame 17, the top of the support frame 17 is fixedly connected with a speed reduction motor 2, the front surfaces of the two installation plates 22 are both rotatably connected with synchronous wheels 9 through rotating shafts, a transmission piece 6 is sleeved on the outer surfaces of the two synchronous wheels 9, the two synchronous wheels 9 are in transmission connection through the transmission piece 6, an electromagnetic clutch 3 is arranged on the front surface of one synchronous wheel 9, and, the front surface of the fixed frame 21 is fixedly connected with a fixed guide rail 12, a cold storage door 13 is arranged below the fixed guide rail 12, the top part and the positions close to the two sides of the cold storage door 13 are both fixedly connected with connecting plates 18, one ends of the two connecting plates 18 far away from the cold storage door 13 are both rotatably connected with rollers 20 through rotating shafts, the tops of the two rollers 20 are both attached to the inner top part of the fixed guide rail 12, the bottoms of the two rollers 20 are both attached to a transmission piece 6, when the wireless receiver 14 receives a door opening instruction, the door opening action is started, the electromagnetic clutch 3 is started, at the moment, the speed reducing motor 2 drives the synchronizing wheel 9 to rotate, the transmission piece 6 sleeved on the outer surface of the synchronizing wheel 9 drives the rollers 20 to rotate inside the fixed guide rail 12, under the guiding action of the guide groove 19, the power is transmitted to the cold storage door 13 through the two connecting plates, because the light barrier 4 is fixedly connected to the outer surface of the transmission member 6, at this time, the light barrier 4 moves together with the transmission member 6, when the first photoelectric sensor 5 detects the light barrier 4, the wireless receiver 14 receives the instruction and sends out an electric signal to stop the decelerating motor 2 and the electromagnetic clutch 3, at this time, the cold storage door 13 is in a fully open state, the wireless receiver 14 in this state continuously reads the first moving detection sensor 7, the third photoelectric sensor 10 and the second moving detection sensor 11, the sent electric signal, if the wireless receiver 14 does not receive an unblocking signal within 10 seconds continuously, the door closing action is started, at this time, the electromagnetic clutch 3 is started and the decelerating motor 2 is reversed, when the second photoelectric sensor 8 detects the light barrier 4, the wireless receiver 14 receives the electric signal sent by the second photoelectric sensor 8 and sends out an instruction to close the decelerating motor 2 and the electromagnetic clutch 3, when the operation personnel includes transportation equipment passing in and out the freezer, the device can realize the switch operation of quick freezer door 13, the manpower operation of not only having saved, simultaneously also great reduction the extravagant of the energy that causes of scattering of freezer air conditioning, if detect the third photoelectric sensor 10 and be sheltered from in the action of closing the door, stop the action of closing the door this moment, restart the action of opening the door, can effectually avoid freezer door 13 to the accidental injury of operation personnel and transportation equipment when closing, the security of the device at the during operation has been ensured.
The transmission piece 6 is a transmission belt; a guide groove 19 is formed in the fixed guide rail 12, and the two rollers 20 are rotatably connected to the inside of the guide groove 19; the outer surface of the transmission piece 6 is fixedly connected with a light barrier 4; a first photoelectric sensor 5 and a second photoelectric sensor 8 are arranged above the transmission member 6, and the first photoelectric sensor 5 and the second photoelectric sensor 8 are both fixedly connected with the wall surface; a third photoelectric sensor 10 is arranged at the left side position of the cold storage door 13, and the third photoelectric sensor 10 is fixedly connected with the wall surface; the upper sides of the transmission part 6 and the cold storage door 13 are respectively provided with a first mobile detection sensor 7 and a second mobile detection sensor 11, the first mobile detection sensor 7 is fixedly connected with the inner top of an eave, and the second mobile detection sensor 11 is fixedly connected with a wall surface.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a freezer induction door with adjustable, includes control box (1), mounting bracket (16), mount (21) and two mounting panels (22), its characterized in that: the control box (1), the mounting frame (16), the fixing frame (21) and the two mounting plates (22) are fixedly connected with the wall surface, a wireless receiver (14) and a WIFI receiver (15) are arranged inside the control box (1), the wireless receiver (14) and the WIFI receiver (15) are fixedly connected with the inner side wall of the control box (1), a supporting frame (17) is fixedly connected to the top of the mounting frame (16), a speed reducing motor (2) is fixedly connected to the top of the supporting frame (17), the front surfaces of the two mounting plates (22) are rotatably connected with synchronizing wheels (9) through rotating shafts, a transmission piece (6) is sleeved on the outer surface of each synchronizing wheel (9), the two synchronizing wheels (9) are in transmission connection through the transmission piece (6), and an electromagnetic clutch (3) is arranged on the front surface of each synchronizing wheel (9), electromagnetic clutch (3) are through the controller electric connection of wire with gear motor (2), the positive fixed surface of mount (21) is connected with fixed guide (12), the below of fixed guide (12) is provided with cold storage door (13), the top of cold storage door (13) and the equal fixedly connected with connecting plate (18) in position that is close to both sides, two the one end that cold storage door (13) were kept away from in connecting plate (18) all is connected with gyro wheel (20), two through the pivot rotation the top of gyro wheel (20) all laminates mutually with the interior top of fixed guide (12), two the bottom of gyro wheel (20) all laminates mutually with driving medium (6).
2. The adjustable cold storage induction door according to claim 1, characterized in that: the transmission piece (6) is a transmission belt.
3. The adjustable cold storage induction door according to claim 1, characterized in that: guide way (19) have been seted up to fixed guide (12) inside, two gyro wheel (20) all rotate the inside of connecting in guide way (19).
4. The adjustable cold storage induction door according to claim 1, characterized in that: the outer surface of the transmission piece (6) is fixedly connected with a light barrier (4).
5. The adjustable cold storage induction door according to claim 1, characterized in that: the top of driving medium (6) is divided and is provided with first photoelectric sensor (5) and second photoelectric sensor (8), first photoelectric sensor (5) and second photoelectric sensor (8) all with wall fixed connection.
6. The adjustable cold storage induction door according to claim 1, characterized in that: the left side position of cold storage door (13) is provided with third photoelectric sensor (10), third photoelectric sensor (10) and wall fixed connection.
7. The adjustable cold storage induction door according to claim 1, characterized in that: the top of driving medium (6) and cold storage door (13) is provided with first removal detection sensor (7) and second removal detection sensor (11) respectively, first removal detection sensor (7) and the interior top fixed connection of eave, second removal detection sensor (11) and wall fixed connection.
CN202010549477.0A 2020-06-16 2020-06-16 Freezer induction door with adjustable Pending CN111877916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010549477.0A CN111877916A (en) 2020-06-16 2020-06-16 Freezer induction door with adjustable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010549477.0A CN111877916A (en) 2020-06-16 2020-06-16 Freezer induction door with adjustable

Publications (1)

Publication Number Publication Date
CN111877916A true CN111877916A (en) 2020-11-03

Family

ID=73157915

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010549477.0A Pending CN111877916A (en) 2020-06-16 2020-06-16 Freezer induction door with adjustable

Country Status (1)

Country Link
CN (1) CN111877916A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201497293U (en) * 2009-06-12 2010-06-02 广州德古门业有限公司 Energy-saving refrigerator door control device
DE102010037397A1 (en) * 2010-09-08 2012-03-08 Miele & Cie. Kg Domestic appliance, in particular handle-less dishwasher
US20140259929A1 (en) * 2013-03-15 2014-09-18 Veritas Medical Solutions, Llc Sliding door with tortuous leading edge path
CN204730559U (en) * 2015-05-23 2015-10-28 上海灵羽电子科技有限公司 A kind of control system of controlled in wireless cold-storage door switch
CN206769654U (en) * 2017-03-20 2017-12-19 广州市德固制冷设备有限公司 A kind of cold-storage door using synchronizing wheel toothed belt transmission
CN207540229U (en) * 2017-12-09 2018-06-26 湛江市三乐渔业用品有限公司 A kind of freezer automatically-controlled door
CN208077277U (en) * 2018-04-28 2018-11-09 广州丹德自动化科技有限公司 A kind of cold-storage door based on recognition of face

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201497293U (en) * 2009-06-12 2010-06-02 广州德古门业有限公司 Energy-saving refrigerator door control device
DE102010037397A1 (en) * 2010-09-08 2012-03-08 Miele & Cie. Kg Domestic appliance, in particular handle-less dishwasher
US20140259929A1 (en) * 2013-03-15 2014-09-18 Veritas Medical Solutions, Llc Sliding door with tortuous leading edge path
CN204730559U (en) * 2015-05-23 2015-10-28 上海灵羽电子科技有限公司 A kind of control system of controlled in wireless cold-storage door switch
CN206769654U (en) * 2017-03-20 2017-12-19 广州市德固制冷设备有限公司 A kind of cold-storage door using synchronizing wheel toothed belt transmission
CN207540229U (en) * 2017-12-09 2018-06-26 湛江市三乐渔业用品有限公司 A kind of freezer automatically-controlled door
CN208077277U (en) * 2018-04-28 2018-11-09 广州丹德自动化科技有限公司 A kind of cold-storage door based on recognition of face

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Application publication date: 20201103

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