CN113975419B - Oral cavity inspection instrument degassing unit for department of stomatology - Google Patents
Oral cavity inspection instrument degassing unit for department of stomatology Download PDFInfo
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- CN113975419B CN113975419B CN202111286864.0A CN202111286864A CN113975419B CN 113975419 B CN113975419 B CN 113975419B CN 202111286864 A CN202111286864 A CN 202111286864A CN 113975419 B CN113975419 B CN 113975419B
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- 238000007872 degassing Methods 0.000 title description 2
- 230000001954 sterilising effect Effects 0.000 claims abstract description 214
- 239000012530 fluid Substances 0.000 claims abstract description 171
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 170
- 230000004087 circulation Effects 0.000 claims abstract description 57
- 238000001035 drying Methods 0.000 claims abstract description 16
- 230000000249 desinfective effect Effects 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 37
- 239000012528 membrane Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 26
- 238000005374 membrane filtration Methods 0.000 claims description 21
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- 238000011068 loading method Methods 0.000 claims description 5
- 238000011017 operating method Methods 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 13
- 239000012466 permeate Substances 0.000 description 11
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- 238000005202 decontamination Methods 0.000 description 9
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS 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
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS 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
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention relates to a disinfection device of an oral examination instrument for stomatology, comprising: a container for sterilizing, disinfecting and drying an oral inspection instrument, which is configured with a sterilizing unit and a sterilizing unit; a fluid control module configured with a passageway for transporting a fluid and a heat exchange assembly. The fluid control module further comprises a fluid circulation assembly, wherein the fluid circulation assembly is connected to the disinfection unit and the sterilization unit and can be used for circulating fluid in the sterilization unit.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a disinfection device for an oral examination instrument for stomatology.
Background
Oral devices (dental devices) refer to reusable devices, appliances and articles for preventing, diagnosing, treating oral conditions and oral care, and can be classified into high-risk oral devices (critical dental instruments), medium-risk oral devices (semicritical dental instruments) and low-risk oral devices (noncritical dental instruments) according to the degree of risk. Wherein a highly dangerous oral appliance (critical dental instruments) refers to an oral appliance that penetrates soft tissue, contacts bone, enters or contacts blood or other sterile tissue; the moderate dangerous oral appliance (semicritical dental instruments) is an oral appliance which is contacted with the complete mucous membrane and does not enter sterile tissues, organs and blood flow of a human body, and does not contact damaged skin and mucous membrane; the low-risk oral appliance (noncritical dental instruments) is an oral appliance which does not contact the oral cavity of a patient or indirectly contacts the oral cavity of the patient, participates in oral diagnosis and treatment services, has microbial contamination, is harmless in general, and only causes harm when being contaminated by a certain amount of pathogenic microorganisms.
Inspection instruments such as mouth mirrors, forceps, instrument trays and the like; a dental handpiece; an intraoral X-ray film holder; a rubber barrier clip; retractors for lips, tongue, cheeks are moderate-risk oral devices that require sterilization or high-level disinfection prior to cleaning. Can be directly put into a standby clean container for preservation after unpacking, disinfection or sterilization. The dental probe has a sharp point and needs to be fixed during the sterilization process, whereas the periodontal probe belongs to a highly dangerous oral appliance and needs to be further sterilized after sterilization.
The oral devices (dental devices) are generally cleaned, disinfected, sterilized, dried, and the like after use, and are respectively carried out in a recovery zone cleaning zone and a maintenance packaging and sterilization zone, wherein the recovery cleaning zone is used for carrying out device recovery, classification, cleaning and drying operations, and the recovery zone cleaning zone and the maintenance packaging and sterilization zone are provided with physical barriers. The drying method comprises the following steps: the drying temperature of the metal is 70-90 ℃; plastics at 65-75 deg.C. Medical instruments, appliances and articles directly used after disinfection, wherein the wet and hot disinfection temperature is more than or equal to 90 ℃, the time is more than or equal to 5min, or the A0 value is more than or equal to 3000; the sterilization treatment is continued after the sterilization, the wet heat sterilization temperature is more than or equal to 90 ℃, the time is more than or equal to 1min, or the A0 value is more than or equal to 600. The A0 value is an index for evaluating the effect of wet heat sterilization, and means that the temperature corresponds to 80℃for a period of time (seconds) when the microorganism-killing effect expressed as the Z value is 10K.
Steam sterilization is a common method for medical institutions to repeatedly utilize medical instruments for sterilization, and is also a necessary device for middle and large-sized hospitals in China. The pressure steam sterilizer consumes a great deal of resources and energy sources in the use process, and the standby time (idle time) of the pressure steam sterilizer in most hospitals is long in daily use, and the standby time of each sterilizer is 12-16 hours. The sterilizer standby state consumes 40% of the total power consumption and 21% of the total water consumption. The energy-saving management of the foreign pressure steam sterilizer achieves better effect, and the method mainly comprises the steps of closing the sterilizer in a low peak period, closing the sterilizer when no articles wait for sterilization, changing the loading mode and the like.
The invention discloses an stomatology decontamination cabinet, which is disclosed in a patent document with a publication number of CN108742918A, and structurally comprises a timing knob, a closed door, a deep decontamination device, a display panel, a decontamination water input port, a decontamination water adjusting sliding key and an anti-skidding footing, wherein the upper end of the anti-skidding footing is embedded and arranged at the lower end of the deep decontamination device and is mutually perpendicular, the left end of the decontamination water input port is embedded and arranged at the right end of the deep decontamination device and is mutually perpendicular, the back of the decontamination water adjusting sliding key is embedded and arranged at the front end of the closed door, the back of the display panel and the front end of the closed door are of an integrated structure, the back of the timing knob is embedded and arranged at the front end of the closed door, the back of the closed door is attached to the front end of the deep decontamination device and is mutually perpendicular. However, the drying and the disinfection are not physically isolated, which is easy to cause incomplete disinfection.
As proposed in patent document publication No. CN104968369a, a sterilizing device comprising: at least one chamber for sterilizing a product, a primary fluid circuit connected to the chamber for applying hot water and/or hot steam to the chamber, a secondary fluid circuit for heating and/or cooling the primary fluid circuit, wherein the secondary fluid circuit is connected to the primary fluid circuit by a second heat exchanger, and a layer tank with a plurality of temperature zones in the secondary fluid circuit, wherein the temperature zones can be individually loaded and unloaded with fluid of the secondary fluid circuit. But it does not allow for recycling of a portion of the fluid.
Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present invention was made, the text is not limited to details and contents of all that are listed, but it is by no means the present invention does not have these prior art features, the present invention has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.
Disclosure of Invention
The invention discloses a disinfection device of an oral examination instrument for stomatology, which comprises: a container for sterilizing, disinfecting and drying an oral inspection instrument, which is configured with a sterilizing unit and a sterilizing unit; a fluid control module configured with a passageway for transporting a fluid and a heat exchange assembly. The fluid control module further comprises a fluid circulation assembly, wherein the fluid circulation assembly is connected to the disinfection unit and the sterilization unit and can be used for circulating fluid in the sterilization unit.
Preferably, the fluid circulation assembly is capable of receiving and storing a portion of the fluid inside the sterilization unit after the sterilization unit has completed a sterilization operation, the at least one chamber being provided for storing a portion of the fluid inside the sterilization unit.
Preferably, the fluid circulation assembly is provided with an integrated membrane filtration assembly in fluid communication with the chamber of the fluid circulation assembly, the membrane filtration assembly comprising a first membrane filter having a permeate side and an opposite retentate side, the first membrane filter being integrated with a separation membrane adjacent the permeate side and a support layer adjacent the retentate side.
Preferably, the fluid circulation assembly is connected to the heat exchange assembly to heat or cool the fluid stored inside the fluid circulation assembly for delivery to the sterilization unit and the disinfection unit.
Preferably, the heat exchange assembly comprises a first storage member and a second storage member each having a plurality of storage areas capable of individually loading and unloading fluid introduced into the heat exchange assembly and exchanging heat between the fluid in the first storage member and the fluid in the second storage member by means of a heat exchanger to achieve energy recovery.
Preferably, in order to heat and/or cool the fluid in the first storage element, the fluids from the different storage areas of the first storage element and the second storage element are mixed together and/or extracted layer by layer.
Preferably, during the transportation of the gas of the steam generator to the sterilization unit, the steam flows through the heating pipe to raise the temperature to a predetermined temperature, the heating pipe includes a heat insulating layer for preventing heat transfer to the outside, a delay member provided in the heating pipe to delay the flow rate of the steam passing through the heating pipe, and heating coils provided in parallel in the axial direction of the heating pipe, wherein the steam flowing through the heating pipe is heated by the heating coils.
The invention discloses a disinfection device of an oral examination instrument for stomatology, which comprises: a container for sterilizing, disinfecting and drying an oral inspection instrument, which is configured with a sterilizing unit and a sterilizing unit; a steam generator configured to generate steam; a fluid circulation assembly configured to store water vapor. The first control valve is capable of providing a pulsating fluid supply to the sterilization unit and the disinfection unit by controlling the pressure delivered to the sterilization unit and the disinfection unit during delivery of fluid to the container by the steam generator along the tenth line.
Preferably, the fifth line conveys the fluid of the steam generator to the disinfection unit and the sterilization unit as a bypass of the tenth line.
Preferably, the fluid circulation assembly transfers its stored fluid to the sterilization unit or disinfection unit through a ninth line provided with a second control valve for controlling the fluid pumped to the sterilization unit and disinfection unit, the control valve being capable of disturbing the steam generator delivery process to the sterilization unit or disinfection unit by controlling the fluid flow in order to achieve a pulsating fluid supply to the sterilization unit and disinfection unit.
The invention discloses an operation method capable of recycling fluid and recovering energy, which comprises the following steps:
s1, introducing steam into a disinfection unit and a sterilization unit, and replacing cold air in the disinfection unit and the sterilization unit;
s2, introducing the waste gas generated in the S process into a first storage part of the heat exchange assembly, so that heat in the waste gas is transferred to a second storage part of the heat exchange assembly through a heat exchanger, and water in the second storage part is conveyed to a steam generator to generate steam conveyed to a disinfection unit and a sterilization unit;
s3, sucking air from the outside, filtering the air by the membrane filter assembly, and introducing the air into a first chamber of the fluid circulation assembly;
s4, part of steam in the sterilization unit is filtered by the membrane filtration assembly and then is introduced into a second chamber of the fluid circulation assembly;
s5, heating the cold air in the first chamber to a preset temperature through a heat exchanger, introducing the cold air into the sterilizing unit and the disinfecting unit, replacing steam of the sterilizing unit and the disinfecting unit, and introducing exhaust gas generated by replacement into a first storage part of the heat exchange assembly;
s6, in the later stage of S replacement, when the steam content is reduced to a preset content, introducing the waste gas of the sterilization unit into a third chamber of the fluid circulation assembly after being treated by the drying assembly;
s7, after the steam replacement of the S is finished, introducing cold air in the first chamber into the sterilizing unit and the sterilizing unit, filtering waste gas in the sterilizing unit through the membrane filtering assembly, introducing the waste gas in the sterilizing unit into the first chamber, and introducing the waste gas in the sterilizing unit into the first storage part of the heat exchange assembly;
s8, after a new load is placed, introducing the steam in the second chamber into the disinfection unit and the sterilization unit, and introducing the gas stored in the third chamber into the disinfection unit and the sterilization unit in the process of replacing the steam after disinfection and sterilization are finished.
Preferably, the membrane filtration assembly is connected to a chamber of the fluid circulation assembly, which is capable of filtering solid waste in the fluid input from the external and sterilization units to achieve recycling of the fluid.
Preferably, the fluid circulation assembly is connected to the heat exchange assembly such that the heat exchange assembly is capable of heating and/or cooling the fluid in the fluid circulation assembly, in order to heat and/or cool the fluid of the fluid circulation assembly, the fluids from the different storage areas of the first storage member and the second storage member can be mixed together and/or extracted layer by layer.
The beneficial technical effects of the invention are as follows: the fluid circulation assembly and the heat exchange assembly are arranged, part of fluid in the sterilization process is recycled, heat in waste gas can be effectively utilized, energy is saved, and meanwhile damage to an emission system in the waste gas emission process is reduced.
Drawings
FIG. 1 is a simplified overall construction schematic of an oral examination instrument sterilization apparatus for stomatology according to the present invention;
FIG. 2 is a simplified overall schematic of the passageway of the oral examination instrument sterilization device for stomatology according to the present invention;
FIG. 3 is a schematic structural view of a preferred embodiment of the present invention;
FIG. 4 is a time-pressure diagram of a sterilization unit of the present invention;
fig. 5 is a schematic diagram of a workstation of the prior art.
List of reference numerals
1: a container; 2: a fluid control module; 11: a sterilizing unit; 12: a sterilization unit; 21: a fluid circulation assembly; 22: a passage; 23: a control assembly; 24: a heat exchange assembly; 25: heating pipes; 31: a first control valve; 31a: a main valve; 31b: a secondary valve; 32: a second control valve; 21a: a membrane filtration assembly; 21b: a drying assembly; 211: a first chamber; 212: a second chamber; 213: a third chamber; 221: a first pipeline; 222: a second pipeline; 223: a third pipeline; 224: a fourth pipeline; 225: a fifth pipeline; 226: a sixth pipeline; 227: a seventh pipeline; 228: an eighth pipeline; 22a: a ninth pipeline; 22b: a tenth pipeline; 241: a first storage member; 242: a second storage member; 243: a heat exchanger; 244: a steam generator; a1: a cold air replacement stage; a2: a disinfection and sterilization stage; a3: a steam displacement stage; b: the scheme curve; b1-curve of the prior art.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 5, the disclosure of CN102716506B discloses a dental multifunctional cleaning and disinfecting workstation, which integrates a plurality of cleaning and disinfecting devices, and has compact structure and high cleaning and disinfecting efficiency, but has the problems of high energy consumption in specific use, for this purpose, the present invention discloses a dental oral examination instrument disinfecting device applied to the workstation, comprising: a container 1 for sterilizing, disinfecting and drying an oral inspection instrument is provided with a sterilizing unit 11 and a sterilizing unit 12.
Example 1
According to a preferred embodiment, to solve the above-mentioned problem of high energy consumption of the workstation, the present invention is provided with a fluid control module 2 for controlling the flow of fluid, which is provided with a fluid circulation assembly 21, a passage 22 for transporting the fluid, a control assembly 23 for controlling the flow of fluid, and a heat exchange assembly 24; and a state monitoring module for controlling the communication state of the passage based on the monitored temperature and other data.
According to a preferred embodiment, in the sterilization of the instruments of the family stomatology, different treatment means can be chosen according to the specific classification of the instruments. For example, moderately dangerous oral instruments such as mouth mirrors and forceps are sterilized, while highly dangerous oral instruments such as periodontal probes are sterilized. Wherein, the sterilization needs to meet the condition that the steam temperature is more than or equal to 90 ℃ and the time is more than or equal to 5min so as to ensure the sterilization effect; sterilization is required to be ensured at the working temperature of 115-138 ℃. A plurality of reaction units may be arranged according to different conditions to meet specific processing requirements. Since the sterilization operation is not required and only the sterilization is required, the plurality of sterilization units 11 and 12 can be provided inside the container 1.
According to a preferred embodiment, after sterilization is completed, in order to avoid injury to operators caused by high temperature steam gushing when opening the container door, the high temperature steam filled in the container needs to be replaced, and the high temperature and pressure inside the container need to be reduced to a safe range, so that the operators can take out the load for completing sterilization. To ensure the effect of the replacement of the high-temperature steam with the cold air, the replacement is performed a plurality of times, and a large amount of waste steam is inevitably generated. Meanwhile, in order to ensure that the sterilized inspection instrument is not contaminated by the cold air for replacing the steam, bacteria or solid particles contained in the cold air extracted from the outside may be filtered. The air and steam at this stage is sterile and reusable, and if the air and steam in the process is treated by direct venting, it is wasteful. To solve the above problems, the present invention provides a fluid circulation assembly 21 to solve the problems of fluid circulation and use generated during the replacement process.
The fluid circulation assembly 21 is used for circulating the fluid of the device, and after the sterilization operation of the sterilization unit 12 is completed, the fluid circulation assembly 21 is capable of receiving and storing a portion of the fluid inside the sterilization unit 12, and at least one chamber is provided for storing a portion of the fluid inside the sterilization unit 12, and includes: a first chamber 211 configured to store steam; a second chamber 212 configured to store cool air; a third chamber 213 configured to store high temperature air; a membrane filtration assembly 21a configured to filter gas flowing therethrough; a drying assembly 21b configured to dry the gas flowing therethrough. The fluid circulation assembly 21 is connected to the sterilizing unit 11 and the sterilizing unit 12 to circulate the fluid inside the sterilizing unit 12.
For convenience of description of the above replacement process, the process of replacing the air with the cool air is now divided into three stages according to the content of water vapor in the discharged air, namely: initial replacement, middle replacement and later replacement.
In the initial stage of replacement, most of the high-pressure steam in the container needs to be transferred for subsequent recycling. Specifically, cool air in the first chamber 211 is heated to a predetermined temperature through the heat exchanger 243 to be introduced into the sterilizing unit 12 and the sterilizing unit 11, steam of the sterilizing unit 12 and the sterilizing unit 11 is replaced, and exhaust gas generated by the replacement is introduced into the first storage 241 of the heat exchange assembly 24.
In the middle period of the replacement, the steam remaining in the container is replaced by hot air during the drying process, and when the steam content is reduced to a predetermined content, the exhaust gas of the sterilization unit 12 is treated by the drying assembly 21b and then introduced into the third chamber 213 of the fluid circulation assembly 21.
At the end of the displacement, hot air is displaced by cold air, the cold air in the first chamber 211 is introduced into the sterilizing unit 12 and the sterilizing unit 11, the exhaust gas in the sterilizing unit 12 is filtered by the membrane filtration module 21a and then introduced into the first chamber 211, and the exhaust gas in the sterilizing unit 11 is introduced into the first storage 241 of the heat exchange module 24.
When the superheated steam after the sterilization treatment is required to be further utilized, the problem of solid waste formed by inactive bacteria or viruses carried by the superheated steam is required to be considered, and the solid waste accelerates the condensation of the steam and is also attached to the surface of the instrument to be sterilized, and the sterilization effect of the instrument to be sterilized is affected when the treatment is not performed. It is therefore necessary to filter the solid waste in the gas during this process. Preferably, the fluid circulation assembly 21 is provided with an integrated membrane filtration assembly 21a, the membrane filtration assembly 21a being in fluid communication with the chamber of the fluid circulation assembly 21, the membrane filtration assembly comprising a membrane filter having a permeate side and an opposite retentate side, the membrane filter being integrated with a separation membrane adjacent the permeate side and a support layer adjacent the retentate side.
Specifically, the membrane filtration modules 21a of one or more membrane filters are in fluid communication. The membrane filter 21 includes a selective separation membrane that allows water molecules in a gas phase (e.g., steam) to pass through while rejecting (e.g., retaining, not allowing to pass through) organic molecules that are desired to be removed. The permeate (e.g., filtered vapor) of the membrane filter 21 may be used at a point of use 70 in fluid communication with the membrane filtration system 20. The membrane filtration assembly 21a may include additional filters in addition to the one or more membrane filters. For example, the membrane filtration assembly may include particulate filters, adsorbent filters, or combinations thereof of various particle sizes. Particulate filters may be used to remove solid particles or droplets. Additional filters may be selected independently and placed upstream or downstream of the membrane filter.
The membrane filtration assembly may comprise a combination of two or more particulate filters having different particle size cut-points. In one exemplary embodiment, the particle size cutoff of the first particulate filter is about 1mm; the particle size cut-off of the second particle size filter is about 25 μm; and the particle size cut-off of the third particle size filter is about 5 μm.
The membrane filtration module may include an adsorbent filter to remove residual organic molecules not removed by the membrane filter 21. The adsorbent filter may be arranged as a packed bed filter comprising adsorbent and/or adsorbent material, such as activated carbon, molecular sieves, other suitable materials, or a combination thereof. The number and size of the adsorbent filters in the membrane filtration assembly can be selected to achieve a desired removal capacity.
The vapor stream entering the membrane filter has a first concentration of organic compounds. The permeate of the permeate side of the membrane filter after treatment with the membrane filter may have a second (reduced) concentration of organic compounds. If a sorbent filter is included, the permeate is further treated in the sorbent filter and has a third (further reduced) concentration of organic compounds.
The separation membrane is a non-ionic fluorinated (e.g., perfluorinated) polymer membrane that may be supported by one or more support layers. Optionally, the separation membrane is supported by a first support layer and a second support layer. The layers of the separation membrane are arranged such that the first support layer is located on the permeate side and the second support layer is arranged between the first support layer and the separation layer. When the vapor reaches the separation layer, the membrane allows the water vapor to pass through (e.g., permeate) to reach the permeate side while rejecting the organic compound molecules and retaining them (e.g., retentate) on the retentate side of the membrane filter.
Preferably, the fluid circulation assembly 21 is connected to the heat exchange assembly 24 to heat or cool the fluid stored inside the fluid circulation assembly 21 for delivery to the sterilization unit 11 and the sterilization unit 12.
According to a preferred embodiment, when the oral cavity examination apparatus is sterilized by means of steam sterilization under pressure, the inner cavity of the container is in contact with the external environment during loading and unloading of the container. When the container is closed, the inside of the container is filled with cold air, and in order to prevent the situations of reducing the steam partial pressure and preventing steam from contacting the to-be-sterilized instrument caused by cold air residues, the cold air needs to be thoroughly discharged so as to ensure the sterilizing effect. Therefore, the need to replace the cold air in the container by filling the exhausted steam several times before sterilization, which generates a large amount of exhaust gas. If the exhaust gas is directly discharged, heat in the exhaust gas is not effectively utilized, so that energy is wasted, and the high temperature of the exhaust gas can damage an exhaust system. To solve the above problems, the present invention is provided with a heat exchange assembly 24 to effectively use the heat of the exhaust gas in the above process.
Specifically, the heat exchange assembly 24 is configured with a heat exchanger 243 for exchanging heat, a steam generator 244 for generating steam for use in sterilization, and a first storage 241 and a second storage 242 for storing exhaust gas and water, the first storage 241 and the second storage 242 being connected to the heat exchanger 243, and effectively transferring heat in the exhaust gas to the water for generating steam to achieve recycling of energy.
Preferably, the first storage element 241 and the second storage element 242 each have a plurality of storage areas, and the heat exchange assembly 24 includes storage areas capable of individually loading and unloading fluid introduced into the heat exchange assembly 24, and exchanging heat with the fluid in the first storage element 241 and the second storage element 242 by the heat exchanger 243 to achieve energy recovery. To heat and/or cool the fluid in the first storage element 241, the fluids from the different storage areas of the first storage element 241 and the second storage element 242 are mixed together and/or extracted layer by layer.
Further, the steam generated by the steam generator cannot meet the use requirement of sterilization, and during the process of delivering the gas of the steam generated by the steam generator 244 to the sterilization unit 12, the steam can flow through the heating tube 25 to raise the temperature to a predetermined temperature, the heating tube 25 comprises a heat insulation layer for preventing heat from being transferred to the outside, a delay member arranged in the heating tube to delay the flow rate of the steam passing through the heating tube, and heating coils arranged in parallel along the axial direction of the heating tube, wherein the steam flowing through the heating tube is heated by the heating coils.
Alternatively, the heating tube is made of a metallic material, preferably stainless steel. A heating device is provided at the outer periphery of the heating tube, which heats the heating tube by means of power applied from a power source. The heating means is a heating coil wound around the outer circumference of the heating tube. However, the heating device of the present invention is not limited to the heating coil, and various heating devices capable of heating the heating tube may be employed. As another example of the heating device, a heating plate may be provided at a portion of the inner side of the heating tube instead of the heating coil, and the heating plate may be provided together with the heating coil. The heating means is preferably configured to control its temperature by a controller. If the temperature of the heating means can be adjusted, the temperature and pressure of the steam can be controlled.
The passage 22 is for delivering a fluid, and includes: a first conduit 221 configured to convey fluid inside the first storage 241 to a heat exchanger 243; a second conduit 222 configured to convey fluid inside the second storage 242 to a heat exchanger 243; a third conduit 223 configured to convey fluid of the fluid circulation assembly 21 to a heat exchanger 243; a fourth conduit 224 configured for recycling fluid of the fluid circulation assembly 21; a fifth line 225 configured for delivering the fluid of the first storage 241 to the container 1; a sixth conduit 226 configured for delivering waste fluid from the second storage 242 to a discharge system; a seventh conduit 227 configured for delivering water to the heat exchange assembly 24; an eighth conduit 228 configured to convey cool air to the fluid circulation assembly 21. Optionally, pumps are arranged in the pipelines to realize the transportation of the fluid, and valves are arranged in the pipelines to control the transportation process.
The control assembly 23 is changed by controlling the operation of the pump and controlling the closed state of the valve based on the instructions of the state monitoring module so that the fluid control module 2 achieves control of the flow direction of water and steam.
Optionally, inside the sterilization unit 11 and the disinfection unit 12 are provided pressure gauges and temperature gauges.
The invention discloses an operation method capable of recycling fluid and recovering energy, which comprises the following steps:
s1, introducing steam into the sterilizing unit 11 and the sterilizing unit 12, and replacing cold air in the sterilizing unit 11 and the sterilizing unit 12;
s2, introducing the exhaust gas generated in the S1 process into a first storage part 241 of the heat exchange assembly 24, thereby transferring heat in the exhaust gas to a second storage part 242 of the heat exchange assembly 24 through a heat exchanger 243, and delivering water in the second storage part 242 to a steam generator 244 to generate steam delivered to the sterilizing unit 11 and the sterilizing unit 12;
s3, sucking air from the outside, filtering the air by the membrane filter assembly 21a, and introducing the air into the first chamber 211 of the fluid circulation assembly 21;
s4, introducing part of steam in the sterilization unit 12 into the second chamber 212 of the fluid circulation assembly 21 after being filtered by the membrane filtration assembly 21 a;
s5, heating the cold air in the first chamber 211 to a preset temperature through a heat exchanger 243, introducing the cold air into the sterilizing unit 12 and the sterilizing unit 11, replacing the steam of the sterilizing unit 12 and the sterilizing unit 11, and introducing the exhaust gas generated by replacement into the first storage part 241 of the heat exchange assembly 24;
s6, in the later replacement stage of S5, when the steam content is reduced to a preset content, introducing the waste gas of the sterilization unit 12 into the third chamber 213 of the fluid circulation assembly 21 after being treated by the drying assembly 21 b;
s7, after the steam replacement of S5 is finished, introducing cold air in the first chamber 211 into the sterilizing unit 12 and the sterilizing unit 11, filtering waste gas in the sterilizing unit 12 by the membrane filter assembly 21a, introducing the waste gas into the first chamber 211, and introducing the waste gas in the sterilizing unit 11 into the first storage piece 241 of the heat exchange assembly 24;
s8, after a new load is placed, the steam in the second chamber 212 is introduced into the sterilizing unit 11 and the sterilizing unit 12, and the gas stored in the third chamber 213 is introduced into the sterilizing unit 11 and the sterilizing unit 12 in the process of replacing the steam after the sterilization.
Preferably, the membrane filtration module 21a is connected to a chamber of the fluid circulation module 21, which is capable of filtering solid waste in the fluid input from the external and sterilization unit 12 to achieve recycling of the fluid.
Preferably, the fluid circulation assembly 21 is connected to the heat exchange assembly 24 such that the heat exchange assembly 24 is capable of heating and/or cooling the fluid in the fluid circulation assembly 21, and in order to heat and/or cool the fluid in the fluid circulation assembly 21, the fluids from the different storage areas of the first storage element 241 and the second storage element 242 can be mixed together and/or extracted layer by layer.
Example 2
In order to ensure uniform distribution of steam in the container, the prior art often needs to perform operations of vacuumizing and filling steam for multiple times to ensure uniform distribution of steam, and a common injection mode needs to consume more steam and time.
As shown in fig. 4, in the process of delivering fluid to the container 1 along the tenth pipe line 22b by the steam generator 244, the first control valve 31 is capable of supplying pulsating fluid to the sterilizing unit 11 and the sterilizing unit 12 by controlling the pressure of the fluid delivered to the sterilizing unit 11 and the sterilizing unit 12, and the fifth pipe line 225 delivers the fluid of the steam generator 244 to the sterilizing unit 11 and the sterilizing unit 12 as a bypass of the tenth pipe line 22 b.
For ease of description of the steam supply process, taking sterilization unit 12 as an example, the fluid delivery process of sterilization unit 12 is divided into three phases, namely: a cold air replacement stage A1, a disinfection and sterilization stage A2 and a steam replacement stage A3.
During the cold air replacement stage A1, the steam generator 244 pulses the sterilization unit 12 by controlling the main valve 31a to decrease or increase the flow of steam to the sterilization unit 11 during the delivery of fluid to the container 1 along the tenth conduit 22b, so as to disturb the delivery of the steam generator 244 to the sterilization unit 12 along the tenth conduit 22 b. The process pressure change is shown in fig. 4, which shows a shorter time from the empty state to the full state than the prior art pressure change curve B1. Optionally, the pressure range of the sterilization unit 12 is 80-100 kPa when the sterilization unit is filled with steam, and the pressure range of the sterilization unit is-10' -20 kPa when the sterilization unit is emptied.
In the sterilization stage A2, the pressure in the sterilization unit 12 is stabilized at 200-210 kPa, maintained for 5-8 min, and the steam flow to the sterilization unit 11 is reduced to disturb the conveying process of the sterilization unit 12, and the sterilization unit 12 is pulsed, wherein the pressure change in the process is shown in fig. 4, and compared with the pressure change curve B1 in the prior art, the pressure in the process is fluctuated, and the minimum pressure is the same as the prior art.
During the vapor displacement phase A3, cool air in the fluid circulation assembly 21 is delivered to the second control valve 32 along the ninth line, and the second control valve 32 is controlled to intermittently deliver cool air to the sterilization unit 12 through the opened valve 234, and the pressure change during the process is shorter and the pressure is higher in the process pressure change curve B from the empty state to the full state as compared to the prior art pressure change curve B1 as shown in fig. 4. Optionally, the pressure range of the sterilization unit 12 is 40-60 kPa when the sterilization unit is filled with cold air, and the pressure range of the sterilization unit is-10 to-20 kPa when the steam is exhausted.
Preferably, the steam generator 244 delivers fluid to the sterilization unit along the tenth and fifth lines 22b, 225, and the pressure of the steam delivered to the sterilization unit is regulated by the main valve 31a to achieve pulsatile steam delivery.
Preferably, during the above process, the gas inside the sterilization unit 12 is discharged along the fourth pipeline 224, and the pump based on the fourth pipeline 224 pumps the sterilization unit air, so that the sterilization unit 12 is in a negative pressure state.
Preferably, the steam generator 244 delivers fluid to the sterilization unit along the tenth line 22b and the fifth line 225, and the pressure of the steam delivered to the sterilization unit is regulated by the secondary valve 31b to achieve pulsatile steam delivery.
According to a preferred embodiment, the recycled steam or steam from the steam generator is stored in a fluid circulation assembly 21, which is transported to the sterilization unit 12 or the disinfection unit 11 via a ninth line 22a, the ninth line 22a being provided with control valves for controlling the flow of pumped steam of the sterilization unit 12 and the disinfection unit 11.
Specifically, the fluid circulation assembly 21 transfers its stored fluid to the sterilization unit 12 or the disinfection unit 11 through a ninth line 22a, said ninth line 22a being provided with a second control valve 32 for controlling the fluid pumped to the sterilization unit 12 and the disinfection unit 11, said control valve being capable of disturbing the delivery of steam from the steam generator 244 to the sterilization unit 12 or the disinfection unit 11 by controlling the fluid flow in such a way as to achieve a pulsating fluid supply to the sterilization unit 12 and the disinfection unit 11.
Specifically, all valves are closed and valve 231 is opened before the sterilization or disinfection operation is performed, so that the steam from steam generator 244 fills the plurality of chambers of fluid circulation assembly 21, and after it is filled, valve 231 is closed. Optionally, the vapor pressure within the fluid circulation assembly chamber is greater than 250 kPa.
During the cold air displacement phase A1, valve 235 and valve 232 are opened, fluid from steam generator 244 is delivered to sterilization unit 12 along fifth line 225, steam is delivered to second control valve 32 along the ninth line, and second control valve 32 is controlled to intermittently deliver steam to sterilization unit 12 through the opened valve 234.
In the disinfection and sterilization stage A2, the fluid of the steam generator 244 is conveyed to the sterilization unit 12 along the fifth pipeline 225, so that the pressure in the sterilization unit 12 is stabilized at 200-210 kPa, and the second control valve 32 is controlled to intermittently convey steam to the sterilization unit 12 through the opened 234 valve.
Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.
It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the invention is defined by the claims and their equivalents.
Claims (7)
1. An oral examination instrument disinfection device for stomatology, comprising:
a container (1) for disinfecting, sterilizing and drying an oral examination instrument, which is provided with a disinfecting unit (11) and a sterilizing unit (12);
a fluid control module (2) provided with a passage (22) for conveying a fluid and a heat exchange assembly (24) capable of recycling heat,
it is characterized in that the fluid control module (2) further comprises a fluid circulation assembly (21) provided with a plurality of chambers, the fluid circulation assembly (21) is connected to the sterilizing unit (11) and the sterilizing unit (12) and can circulate the fluid in the sterilizing unit (12) in the plurality of chambers, after the sterilizing unit (12) finishes sterilizing operation, the fluid circulation assembly (21) can receive and store part of the fluid in the sterilizing unit (12), the fluid circulation assembly (21) is provided with at least one chamber for storing part of the fluid in the sterilizing unit (12),
the fluid circulation assembly (21) is connected with the heat exchange assembly (24) to heat or cool the fluid stored inside the fluid circulation assembly (21) for delivery to the sterilization unit (11) and the sterilization unit (12).
2. The oral inspection instrument disinfection device for stomatology according to claim 1, characterized in that the heat exchange assembly (24) includes a first storage (241) and a second storage (242) each with several storage areas that are capable of individually loading and unloading fluid introduced to the heat exchange assembly (24) and exchanging heat of the fluid in the first (241) and second (242) storage by a heat exchanger (243) to achieve energy recovery.
3. An oral examination instrument disinfection device for stomatology, comprising:
a container (1) for disinfecting, sterilizing and drying an oral examination instrument, which is provided with a disinfecting unit (11) and a sterilizing unit (12);
a steam generator (244) configured for generating steam;
a fluid circulation assembly (21) provided with a plurality of chambers configured to store water vapor and displace the water vapor in the plurality of chambers,
characterized in that the first control valve (31) is capable of providing pulsating fluid supply to the sterilizing unit (11) and the sterilizing unit (12) by controlling the pressure delivered to the sterilizing unit (11) and the sterilizing unit (12) during the delivery of fluid to the container (1) by the steam generator (244) along the tenth line (22 b),
the fluid circulation assembly (21) transmits the stored fluid to the sterilization unit (12) or the disinfection unit (11) through a ninth pipeline (22 a), the ninth pipeline (22 a) is provided with a second control valve (32) for controlling the fluid pumped to the sterilization unit (12) and the disinfection unit (11), and the control valve can disturb the conveying process of the steam generator (244) to the sterilization unit (12) or the disinfection unit (11) in a mode of controlling the fluid flow so as to realize the pulsating fluid supply to the sterilization unit (12) and the disinfection unit (11).
4. A dental oral examination instrument sterilizing apparatus according to claim 3, characterized in that the fifth line (225) conveys the fluid of the steam generator (244) to the sterilizing unit (11) and the sterilizing unit (12) as a bypass of the tenth line (22 b).
5. A method of operation for recycling fluid and for energy recovery, the method of operation comprising the steps of:
s1, introducing steam into a disinfection unit (11) and a sterilization unit (12), and replacing cold air in the disinfection unit (11) and the sterilization unit (12);
s2, introducing the waste gas generated in the S1 process into a second storage part (242) of the heat exchange assembly (24), thereby transferring heat in the waste gas to a first storage part (241) of the heat exchange assembly (24) through a heat exchanger (243), and conveying water in the first storage part (241) to a steam generator (244) to generate steam conveyed to the sterilizing unit (11) and the sterilizing unit (12);
s3, sucking air from the outside, filtering the air by the membrane filter assembly (21 a), and introducing the air into a first chamber (211) of the fluid circulation assembly (21);
s4, introducing part of steam in the sterilization unit (12) into a second chamber (212) of the fluid circulation assembly (21) after filtering by the membrane filtration assembly (21 a);
s5, heating the cold air in the first chamber (211) to a preset temperature through a heat exchanger (243) and introducing the cold air into the sterilizing unit (12) and the sterilizing unit (11), replacing steam of the sterilizing unit (12) and the sterilizing unit (11), and introducing exhaust gas generated by replacement into a first storage part (241) of the heat exchange assembly (24);
s6, in the later replacement stage of S5, when the steam content is reduced to a preset content, introducing the waste gas of the sterilization unit (12) into a third chamber (213) of the fluid circulation assembly (21) after being treated by the drying assembly (21 b);
s7, after the steam replacement of the S5 is finished, introducing cold air in the first chamber (211) into the sterilizing unit (12) and the sterilizing unit (11), filtering waste gas in the sterilizing unit (12) through the membrane filtering component (21 a) and then introducing the waste gas into the first chamber (211), and introducing the waste gas in the sterilizing unit (11) into the second storage piece (242) of the heat exchange component (24);
s8, after a new load is placed, introducing steam in the second chamber (212) into the sterilizing unit (11) and the sterilizing unit (12), and introducing gas stored in the third chamber (213) into the sterilizing unit (11) and the sterilizing unit (12) in the process of replacing steam after sterilization.
6. The operating method for recycling fluids and recovering energy according to claim 5, characterized in that said membrane filtration assembly (21 a) is connected to the chamber of said fluid recycling assembly (21) and is capable of filtering the solid waste in the fluid input by the external and sterilization unit (12) to achieve recycling of the fluid.
7. The method of operation of recycling fluids and recovering energy according to claim 6, characterized in that said fluid recycling assembly (21) is connected to said heat exchange assembly (24) so that said heat exchange assembly (24) can heat and/or cool the fluid in said fluid recycling assembly (21), in order to heat and/or cool the fluid of said fluid recycling assembly (21), the fluids from different storage areas of said first storage element (241) and second storage element (242) can be mixed together and/or extracted layer by layer.
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| CN202111286864.0A CN113975419B (en) | 2021-11-02 | 2021-11-02 | Oral cavity inspection instrument degassing unit for department of stomatology |
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| CN202111286864.0A CN113975419B (en) | 2021-11-02 | 2021-11-02 | Oral cavity inspection instrument degassing unit for department of stomatology |
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