CN107496960A - A kind of special vaporized hydrogen peroxide sterilizing pass-through box - Google Patents

A kind of special vaporized hydrogen peroxide sterilizing pass-through box Download PDF

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Publication number
CN107496960A
CN107496960A CN201710802954.8A CN201710802954A CN107496960A CN 107496960 A CN107496960 A CN 107496960A CN 201710802954 A CN201710802954 A CN 201710802954A CN 107496960 A CN107496960 A CN 107496960A
Authority
CN
China
Prior art keywords
pass
box
hydrogen peroxide
working cavity
door
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
CN201710802954.8A
Other languages
Chinese (zh)
Inventor
俞志勇
姜军
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.)
Jiangsu Universal Biotechnology Co Ltd
Original Assignee
Jiangsu Universal Biotechnology 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 Jiangsu Universal Biotechnology Co Ltd filed Critical Jiangsu Universal Biotechnology Co Ltd
Priority to CN201710802954.8A priority Critical patent/CN107496960A/en
Publication of CN107496960A publication Critical patent/CN107496960A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/20Gaseous substances, e.g. vapours
    • A61L2/208Hydrogen peroxide
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24Apparatus using programmed or automatic operation
    • 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
    • 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
    • E06B7/16Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/11Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/12Apparatus for isolating biocidal substances from the environment
    • A61L2202/121Sealings, e.g. doors, covers, valves, sluices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/12Apparatus for isolating biocidal substances from the environment
    • A61L2202/122Chambers for sterilisation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/14Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs

Landscapes

  • Health & Medical Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

The present invention relates to sterilizing installation technical field, more particularly to a kind of special vaporized hydrogen peroxide sterilizing pass-through box.The technical solution adopted by the present invention is:A kind of special vaporized hydrogen peroxide sterilizing pass-through box, it is characterised in that:Pass-through box agent structure including being shaped as cuboid, pass-through box agent structure bosom position is provided with working cavity structure, the front-back position of working cavity structure is respectively equipped with a cavity door, rock wool insulating layer structure is provided with inside cavity door, the outer surface of working cavity structure is covered using stainless steel, and formed using the installation of joint way structure, the center of cavity door is provided with transparent rectangle checking mouth, and the lower end of working cavity structure is provided with steam generator.It is an advantage of the invention that:Removing biological pollution is carried out to body surface using vaporized hydrogen peroxide, the pollution risk between different clean rank rooms can be effectively reduced, the quality of product is improved, avoid causing secondary pollution.

Description

A kind of special vaporized hydrogen peroxide sterilizing pass-through box
Technical field
The present invention relates to sterilizing installation technical field, more particularly to a kind of special vaporized hydrogen peroxide sterilizing pass-through box.
Background technology
Vaporized hydrogen peroxide (GHP, GAS Hydrogen Peroxide) has the destroying microorganisms performance of wide spectrum, for Fungi, mould, virus, gram- bacteria, the bacillus especially for anaerobism have good sterilization effect.Vaporized hydrogen peroxide After degradation, oxygen and water can be resolved into, it is harmless for personnel and environment.In addition, sterilized using vaporized hydrogen peroxide, technique Time is short, good to material compatibility, is easily verified that, formaldehyde, ozone etc. is used relative to traditional, is preferable sterilization, sterilizing Medium selects.
The content of the invention
It is an object of the invention to provide a kind of special vaporized hydrogen peroxide sterilizing pass-through box, it is mainly used in pharmaceutical industry, The transmission of product or Work tool particularly between the different clean rank rooms of production of vaccine enterprise, avoids causing secondary pollution.
Technical scheme is as follows:
A kind of special vaporized hydrogen peroxide sterilizing pass-through box, it is characterised in that:Pass-through box including being shaped as cuboid Agent structure, the inside of the pass-through box agent structure are provided with support frame, and the pass-through box agent structure bosom position is set There is working cavity structure, the front-back position of the working cavity structure is respectively equipped with a cavity door, the working cavity knot Structure is square fillet section structure, and rock wool insulating layer structure, the appearance of the working cavity structure are provided with inside the cavity door Face is covered using stainless steel, and is formed using the installation of joint way structure, and the center of the cavity door is provided with transparent length Square checking mouth, the lower end of the working cavity structure are provided with steam generator, and the steam generator uses electrically heated side Formula is run, and the steam generator is located at the pass-through box agent structure bottom centre position, the pass-through box agent structure Front bottom position is provided with into Dump gate, it is described enter Dump gate the pass-through box agent structure is hingedly connected at by horizontally openable formula On, it is described enter sealing between Dump gate and doorframe using gas-flow closure circle and compression type sealing ring while sealed, it is described Working cavity structure is provided with pipe-line system in side, the pipe-line system be located at the top of the working cavity structure, left side and Lower position, the pipe-line system are made up of installation cooling water temperature system and dehumidifier before ventilating fan, the pipe-line system On element be hygiene-type material, the pipeline connection of the pipe-line system is uniformly connected using sanitation-grade flange or thimble connector Connect, the filtration system provided with different filtering common mediums in the pass-through box agent structure, in the pass-through box agent structure Portion's right positions are provided with Electric Appliance Cabinet, and the electric parts and programmable controller structure of whole equipment are provided with the Electric Appliance Cabinet, To be individually arranged apart, the front of the pass-through box agent structure is right for the control system of the Electric Appliance Cabinet and the cable of power system Side is provided with rectangle control operation panel, and display module, control module and alarm mould are mainly included on the control operation panel Block.
Further, the cavity door is linked together with the working cavity structure by way of hinge.
Further, it is described enter Dump gate controlled by the way of manually operated enabling and door-closing operation, it is described enter discharging Door is mainly made up of glue and glass.
Further, the cavity door and it is described enter Dump gate locked by the way of machinery or pneumatic electronic interlocking Operation.
Further, the alarm module on the control operation panel is mainly used in jerk, cavity temperature height, cavity occur Concentration is low, pre- hot stall, compressed air pressure is low, exhaust concentration is high, chamber pressure low situation low with hydrogen peroxide liquid level when report It is alert.
Beneficial effects of the present invention:
The present invention carries out removing biological pollution using vaporized hydrogen peroxide to body surface, can effectively reduce different cleanings Pollution risk between rank room, the quality of product is improved, avoid causing secondary pollution.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention;
Fig. 2 is the front schematic view of the present invention;
Fig. 3 is the leftschematic diagram of the present invention;
Fig. 4 is the schematic top plan view of the present invention;
In figure:1st, pass-through box agent structure, 2, working cavity structure, 3, cavity door, 4, checking mouth, 5, steam generator, 6th, Dump gate is entered, 7, pipe-line system, 8, Electric Appliance Cabinet, 9, control operation panel.
Embodiment
As shown in Figures 1 to 4, a kind of special vaporized hydrogen peroxide sterilizing pass-through box, it is designed for not tolerating The product of saturated vapor, such as plastics and rubber components carry out surface sterilizing, when in use the room by article by low level, first Insert vaporized hydrogen peroxide passing cabinet, removing biological pollution carried out to body surface using vaporized hydrogen peroxide, reuse it is vertical or Horizontal clean laminar air flow (LAF) and HEPA, after catching dust particle (Particle), then it will be passed to through the clean article handled Clean area (such as B levels area), so can the effectively pollution risk reduced between different clean rank rooms, improve product Quality.It includes being shaped as the pass-through box agent structure 1 of cuboid, and the inside of the pass-through box agent structure 1 is provided with support Frame, it is used on support frame fixing various construction packages, and bracing reinforcement is played a part of to total.The pass-through box master The bosom position of body structure 1 is provided with working cavity structure 2, and its inside is vaporized hydrogen peroxide, and sterilizing behaviour is carried out by it Make.The front-back position of the working cavity structure 2 is respectively equipped with a cavity door 3, can more facilitate when in use.The work It is square fillet section structure to make cavity body structure 2, makes that its structural strength is higher, and structural strength is more reliable when in use.Institute To state the inside of cavity door 3 and be provided with rock wool insulating layer structure, the outer surface of the working cavity structure 2 is covered using stainless steel, and Formed using the installation of joint way structure, the temperature for the heat-insulated outer surface that personnel touch is no more than 40 DEG C, when in use It is safer.The center of the cavity door 3 is provided with transparent rectangle checking mouth 4, facilitates staff to be observed, can The situation in cavity is understood in time.The lower end of the working cavity structure 2 is provided with steam generator 5, and steam generator uses 304 Stainless steel makes.The Vessel Design of generator meets GMP regulation, integral design, ensures that gas will not be revealed.The steam Generator 5 is run using electrically heated mode, using more convenient.The steam generator 5 is located at the pass-through box agent structure 1 Bottom centre position.The front bottom position of the pass-through box agent structure 1 is provided with into Dump gate 6, it is described enter Dump gate 6 by water Flat open-type is hingedly connected in the pass-through box agent structure 1, is more convenient when being opened.It is described enter Dump gate 6 and door Sealing between frame is sealed simultaneously using gas-flow closure circle with compression type sealing ring, it is ensured that sealing of the door after closing, Make the operation of internal system more stable.The working cavity structure 2 is provided with pipe-line system 7 in side, and the pipe-line system 7 is located at Top, left side and the lower position of the working cavity structure 2, making it, effect is more preferable when in use.The pipe-line system 7 is by entering Install cooling water temperature system and dehumidifier composition before gas blower fan additional.Element in the pipe-line system 7 is hygiene-type material, its Design can allow cleaning more convenient, and maintenance cost is lower.The pipeline connection of the pipe-line system 7 uniformly using sanitation-grade flange or Thimble connector connects, and ensures the quick and secure attachment of system fluid distribution duct.It is provided with the pass-through box agent structure 1 The filtration system of different filtering common mediums, the compressed-air filter for door sealing, valve etc..The pass-through box main body The inner right side position of structure 1 is provided with Electric Appliance Cabinet 8, and the protection level of Electric Appliance Cabinet is IP54 or higher.It is provided with the Electric Appliance Cabinet 8 The electric parts and programmable controller structure of whole equipment, the control system of the Electric Appliance Cabinet 8 and the cable of power system are It is individually arranged apart, it is ensured that the performance of Electric Appliance Cabinet 8 is more preferable, and each several part is all safer in use.The pass-through box The positive right side of face of agent structure 1 is provided with rectangle control operation panel 9, is more convenient when carrying out operational control.The control behaviour Make mainly to include display module, control module and alarm module on panel 9.
Preferably, the cavity door 3 is linked together with the working cavity structure 2 by way of hinge, connection More firmly, connection effect is more preferable, and cost is lower.
Preferably, it is described enter Dump gate 6 controlled by the way of manually operated enabling and door-closing operation, it is described enter discharging Door 6 is mainly made up of glue and glass.
Preferably, the cavity door 3 and it is described enter Dump gate 6 locked by the way of machinery or pneumatic electronic interlocking Tight operation, to avoid door from being accidentally opened, endangers the safety of operator, while ensure in no electric power or pneumatic source, door Sealing will not fail.Two side doors have filled interlock system, can avoid charging and discharge door while be opened.
Preferably, the alarm module on the control operation panel 9 is mainly used in jerk, cavity temperature height, chamber occur Bulk concentration is low, pre- hot stall, compressed air pressure is low, exhaust concentration is high, chamber pressure low situation low with hydrogen peroxide liquid level when Alarm.Operating personnel can be told in time when a failure occurs it, allow the operator to more timely be handled, it is ensured that be whole Equipment being capable of normal operation.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, on the premise of principle of the present invention is not departed from, some improvement or replacement can also be made, these improve or replaced It should be regarded as protection scope of the present invention.

Claims (5)

  1. A kind of 1. special vaporized hydrogen peroxide sterilizing pass-through box, it is characterised in that:Pass-through box master including being shaped as cuboid Body structure (1), the inside of the pass-through box agent structure (1) are provided with support frame, pass-through box agent structure (1) bosom Position is provided with working cavity structure (2), and the front-back position of the working cavity structure (2) is respectively equipped with a cavity door (3), The working cavity structure (2) is square fillet section structure, and rock wool insulating layer structure, institute are provided with inside the cavity door (3) The outer surface for stating working cavity structure (2) is covered using stainless steel, and is formed using the installation of joint way structure, the cavity door (3) center is provided with transparent rectangle checking mouth (4), and the lower end of the working cavity structure (2) is provided with steam Device (5), the steam generator (5) are run using electrically heated mode, and the steam generator (5) is located at the pass-through box master Body structure (1) bottom centre position, the front bottom position of the pass-through box agent structure (1) is provided with into Dump gate (6), described Enter Dump gate (6) to be hingedly connected on the pass-through box agent structure (1) by horizontally openable formula, it is described enter Dump gate (6) and door Sealing between frame is using gas-flow closure circle and compression type sealing ring while is sealed, the working cavity structure (2) Side is provided with pipe-line system (7), and the pipe-line system (7) is located at top, left side and the lower orientation of the working cavity structure (2) Put, the pipe-line system (7) is made up of installation cooling water temperature system and dehumidifier before ventilating fan, the pipe-line system (7) On element be hygiene-type material, the connection of the pipeline of the pipe-line system (7) uniformly uses sanitation-grade flange or thimble connector Connection, the interior filtration system for being provided with different filtering common mediums of the pass-through box agent structure (1), the pass-through box body junction Structure (1) inner right side position is provided with Electric Appliance Cabinet (8), is provided with the electric parts of whole equipment in the Electric Appliance Cabinet (8) and can compile Range controller structure, the control system of the Electric Appliance Cabinet (8) and the cable of power system are independent arranged apart, the pass-through box The positive right side of face of agent structure (1) is provided with rectangle control operation panel (9), mainly includes on the control operation panel (9) Display module, control module and alarm module.
  2. A kind of 2. special vaporized hydrogen peroxide sterilizing pass-through box according to claim 1, it is characterised in that:The cavity Door (3) is linked together with the working cavity structure (2) by way of hinge.
  3. A kind of 3. special vaporized hydrogen peroxide sterilizing pass-through box according to claim 1, it is characterised in that:It is described to enter to unload Bin gate (6) controlled by the way of manually operated enabling and door-closing operation, it is described enter Dump gate (6) mainly by glue and glass group Into.
  4. A kind of 4. special vaporized hydrogen peroxide sterilizing pass-through box according to claim 1, it is characterised in that:The cavity Door (3) and it is described enter Dump gate (6) using mechanical or pneumatically by the way of electronic interlocking carry out locking operation.
  5. A kind of 5. special vaporized hydrogen peroxide sterilizing pass-through box according to claim 1, it is characterised in that:The control Alarm module on guidance panel (9) is mainly used in occurring that jerk, cavity temperature are high, cavity concentration is low, pre- hot stall, compression are empty Atmospheric pressure is low, exhaust concentration is high, chamber pressure low situation low with hydrogen peroxide liquid level when alarm.
CN201710802954.8A 2017-09-07 2017-09-07 A kind of special vaporized hydrogen peroxide sterilizing pass-through box Pending CN107496960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710802954.8A CN107496960A (en) 2017-09-07 2017-09-07 A kind of special vaporized hydrogen peroxide sterilizing pass-through box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710802954.8A CN107496960A (en) 2017-09-07 2017-09-07 A kind of special vaporized hydrogen peroxide sterilizing pass-through box

Publications (1)

Publication Number Publication Date
CN107496960A true CN107496960A (en) 2017-12-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710802954.8A Pending CN107496960A (en) 2017-09-07 2017-09-07 A kind of special vaporized hydrogen peroxide sterilizing pass-through box

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113932359A (en) * 2021-09-22 2022-01-14 青岛海尔空调器有限总公司 Sterilizing fan assembly, method and apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201189306Y (en) * 2008-04-22 2009-02-04 北京瑞事达科技发展中心有限责任公司 Stainless steel delivery window
CN103007315A (en) * 2012-12-28 2013-04-03 上海东富龙爱瑞思科技有限公司 Hydrogen peroxide steam sterilization rapid transmission window
CN203175325U (en) * 2013-04-12 2013-09-04 天津一电科技有限公司 Delivery window for clean workshop

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201189306Y (en) * 2008-04-22 2009-02-04 北京瑞事达科技发展中心有限责任公司 Stainless steel delivery window
CN103007315A (en) * 2012-12-28 2013-04-03 上海东富龙爱瑞思科技有限公司 Hydrogen peroxide steam sterilization rapid transmission window
CN203175325U (en) * 2013-04-12 2013-09-04 天津一电科技有限公司 Delivery window for clean workshop

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113932359A (en) * 2021-09-22 2022-01-14 青岛海尔空调器有限总公司 Sterilizing fan assembly, method and apparatus

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Application publication date: 20171222