CN210673812U - High-temperature steam sterilization device - Google Patents
High-temperature steam sterilization device Download PDFInfo
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- CN210673812U CN210673812U CN201920633365.6U CN201920633365U CN210673812U CN 210673812 U CN210673812 U CN 210673812U CN 201920633365 U CN201920633365 U CN 201920633365U CN 210673812 U CN210673812 U CN 210673812U
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Abstract
The utility model discloses a high-temperature steam sterilization device. The high-temperature steam sterilization device comprises a steam chamber, a light-gathering plate covered on the steam chamber, an object-carrying tray and a water storage cup which are assembled in the steam chamber, and a photo-thermal evaporation plate positioned in the water storage cup; the photothermal evaporation plate comprises a graphene foam thermal insulator and a vertically-oriented graphene light absorber covering the outer surface of the thermal insulator. The utility model provides a high temperature steam sterilization apparatus regards as drive power with wide, the green clear solar energy that distributes, does not consume electric energy, simple structure, small, portable and easy operation. The utility model discloses an adopt and have entrapment light energy, retard the light and heat evaporating plate of thermal current transmission, improved the light and heat conversion efficiency of device greatly, the sterilization time is short, and sterilization effect is good.
Description
Technical Field
The utility model belongs to the technical field of the sterilization, in particular to high-temperature steam sterilization device.
Background
High-temperature steam sterilization is a simple and reliable physical sterilization method, and has been widely applied in the related fields of medical treatment, hygiene, prevention, health care and the like [ y.zhang et al. The high-temperature steam can kill common microbes such as bacteria and fungi, has a killing effect on spores and spores, and can prevent the spread of viruses and diseases from the source.
The high-temperature steam sterilization process is usually driven by electric power, for example, a steam sterilization device disclosed in chinese patent publication No. CN107648627A, uses an electric heating plate at the bottom to heat water to generate steam for sterilization; the steam sterilizer disclosed in chinese patent publication No. CN107335075A is driven by an electric heating plate at the bottom of the water chamber. However, the absence of electrical power in many remote areas of the world has made many medical services such as medical waste disposal difficult to implement and the problem of the spread of viruses and diseases difficult to solve, a phenomenon that is particularly serious in developing countries. Therefore, how to realize disinfection and sterilization in an off-grid state is a difficult problem encountered in the world today.
Solar energy is the most widely distributed energy resource with the largest reserve on the earth, and if the solar energy is used for driving high-temperature steam sterilization in a clean mode, the solar energy can help to improve the current medical and health situations of remote areas. However, for the existing solar-driven high-temperature steam sterilization device, the structure is often more complex, and the requirements on the process technology are often higher, such as: complex piping, such as a split design [ O.Neumannal.et al.PNAS 2013,110: 11677-; and the volume is bulky, difficult to carry, the operation is complicated, like: a large-area condenser and a large-volume support frame [ T.Kaseman equivalent.Am.J.trop.Med.Hyg.2012, 87: 602-607; M.N.Dravid et al.J.Hosp.Infect.2012,80:345-347 ]. In comparison, the simple, portable and integrated solar-driven high-temperature steam sterilization device has higher application value and wider application prospect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature steam sterilization apparatus to distribute extensively, green clear solar energy as drive power, do not consume the electric energy, applicable region is wide. The device of the utility model is simple in structure, small, portable, and easy operation. The utility model discloses an adopt and have entrapment light energy, retard the light and heat evaporating plate of thermal current transmission, improved the light and heat conversion efficiency of device greatly, the sterilization time is short, and sterilization effect is good.
The high-temperature steam sterilization device comprises a steam chamber, a light-gathering plate covered on the steam chamber, an object carrying tray and a water storage cup which are assembled inside the steam chamber, and a photo-thermal evaporation plate located in the water storage cup.
Preferably, the carrying plate is provided with a plurality of through holes in the vertical direction; the bottom that flows to the steam chamber through the through-hole after the steam condensation avoids the comdenstion water to adhere on waiting to disinfect the object, influences the sterilization effect.
The light-gathering plate gathers the light beam into the water storage cup.
Preferably, the light-gathering plate and the water storage cup have the same cross-sectional shape, and the cross-sectional area ratio is 10-100: 1, the light gathering plate and the water storage cup are assembled concentrically.
Preferably, a tray for holding the object tray is disposed inside the steam chamber. The platform can make the carrying tray not contact with the bottom of the steam chamber.
Preferably, a groove is formed in the center of the carrying plate, and the size of the groove is equivalent to that of the bottom of the water storage cup. The groove is used for fixing the mounting position of the water storage cup, and the concentric assembly relation of the water storage cup and the light gathering plate is guaranteed.
Preferably, the high-temperature steam sterilization device further comprises a sealing ring and a clamp, and the sealing ring and the clamp are used for fixing the light-gathering plate.
Placing the objective disc on a tray table of the evaporation chamber; placing the water storage cup in a groove in the center of the objective table; adding a certain amount of water into the water storage cup, and putting the photo-thermal evaporation plate into the water storage cup from top to bottom, wherein the photo-thermal evaporation plate floats on the water surface; placing the articles to be sterilized on a carrying tray in an evaporation chamber; then covering the evaporation chamber with a light-gathering plate for gathering incident light to the upper surface of the photo-thermal evaporation plate and preventing steam from overflowing outwards; and the evaporation chamber is closed by a sealing ring, a fixing ring and a clamp.
The photo-thermal evaporation plate comprises a graphene foam heat insulator and a vertically-oriented graphene light absorber covering the outer surface of the graphene foam heat insulator.
The vertically-oriented graphene light absorber and the graphene foam insulator are connected in a covalent bond manner.
The vertically-oriented graphene light absorber is vertically-oriented graphene with the surface modified by a hydrophilic functional group.
The photothermal evaporation plate connects the light absorber and the heat insulator into a whole in a covalent bond mode, has the functions of trapping light energy and retarding heat flow transfer, overcomes the problem that the light absorber and the heat insulator are easy to separate in a conventional local heating system, and improves the stability of the system; the light absorber collects solar energy and converts the light energy into heat energy to generate local high temperature; the heat insulator retards heat flow transmission and reduces heat dissipation; the light absorber can be used as a liquid flow channel, and liquid is transmitted to a local high-temperature area through capillary action, so that rapid photo-thermal evaporation is realized; and the heat insulator is protected from being wetted by liquid, heat flow is prevented from being transmitted outwards through the permeated liquid, the problem of heat loss caused by the permeation of the liquid into the heat insulator in a conventional local heating system is solved, and the photo-thermal conversion efficiency of the system is improved.
Compared with the prior art, the utility model, the beneficial effect who has is as follows:
the utility model provides a high temperature steam sterilization apparatus regards as drive power with wide, the green clear solar energy that distributes, does not consume the electric energy, and applicable region is wide.
The utility model provides a high temperature steam sterilization apparatus does not have complicated structure based on the integrated design, and processing low cost easily batch processing production.
The high-temperature steam sterilization device provided by the utility model has the advantages of small volume, convenient carrying and simple operation.
The utility model discloses an adopt and have entrapment light energy, retardant heat flow loss's light and heat evaporating plate, improved the stability and the light and heat conversion efficiency of device greatly, produce steam fast, the sterilization time is short, and it is effectual to sterilize.
Description of the drawings:
fig. 1 is a schematic structural view of a high-temperature steam sterilization device provided by the present invention;
FIG. 2 is a schematic view of the exploded structure of the high temperature steam sterilization apparatus provided by the present invention;
FIG. 3 is a schematic cross-sectional view of the high-temperature steam sterilization apparatus according to the present invention;
FIG. 4 is a schematic view of the photo-thermal evaporation principle of the high-temperature steam sterilization apparatus provided by the present invention;
FIG. 5 shows an optical diagram and wettability characterization results of a photothermal evaporation plate in the high temperature steam sterilization apparatus provided in example 1;
fig. 6 shows the steam temperature during the sterilization process of the high temperature steam sterilization apparatus provided in example 1.
Detailed Description
In order to make the present invention more obvious and understandable, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments. The following examples are given for the purpose of illustration only and are not intended to limit the invention in any way and in any way.
Example 1
As shown in fig. 1, fig. 2 and fig. 3, the high-temperature steam sterilization device provided by the present invention comprises: the device comprises a clamp 1, a fixing ring 2, a sealing ring 3, a light-gathering plate 4, a photo-thermal evaporation plate 5, a water storage cup 6, a carrying disc 7 and a steam chamber 8.
As shown in fig. 4, the photothermal evaporation plate 2 includes a graphene foam insulator 22 and a vertically-oriented graphene light absorber 21 covering the outer surface of the insulator 22. The vertically-oriented graphene light absorber 21 collects solar energy and converts the light energy into heat energy to form local high temperature; the graphene foam insulation 22 retards heat flow transfer, reducing heat dissipation; meanwhile, the vertically-oriented graphene light absorber 21 is also used as a liquid flow channel 23, and absorbs liquid 24 through capillary action to reach a local high-temperature area, so that rapid photo-thermal evaporation is realized. Meanwhile, the liquid flow channel 23 may protect the graphene foam thermal insulator 22 from being wetted by the liquid 24, and prevent heat flow from being transmitted to the outside through the infiltrated liquid 24.
Placing the carrying tray 7 on a pallet of the evaporation chamber 8; the water storage cup 6 is assembled in a groove at the center of the object carrying tray 7; adding a certain amount of water into the water storage cup 6, putting the photo-thermal evaporation plate 2 into the water storage cup 6 from the top, and floating the photo-thermal evaporation plate 2 on the water surface; placing the articles to be sterilized on a carrying tray 7 in the evaporation chamber; the light collection plate 4 is then placed over the evaporation chamber 8 and the evaporation chamber 8 is closed with the sealing ring 3, the fixing ring 3 and the clamp 1.
The preparation method of the photothermal evaporation plate 2 comprises the following steps:
1. preparing a graphene oxide aqueous solution, wherein the concentration of the graphene oxide is 4g L-1Sodium tetraborate decahydrate at a concentration of 1mmol L-1Ethylene diamine concentration of 4mmol L-1；
2. Transferring the prepared graphene oxide aqueous solution to a Teflon high-temperature high-pressure reaction kettle, maintaining for 6 hours at the temperature of 90 ℃, then maintaining for 6 hours at the temperature of 120 ℃, and finally cooling to room temperature to obtain graphene hydrogel;
3. soaking the obtained graphene hydrogel for 6 hours by using an ethanol water solution, wherein the volume fraction of ethanol is 10%, and the purpose is to clean the additive remained on the surface of the graphene hydrogel;
4. transferring the cleaned graphene hydrogel to a freezing cavity with the temperature of-80 ℃, freezing for 6h, then transferring to a drying cavity with the temperature of 0 ℃ and the air pressure of less than 650Pa, and vacuum drying for 6h to obtain graphene foam;
5. placing the obtained graphene foam in a plasma enhanced chemical vapor deposition reaction chamber, vacuumizing to less than 10Pa, and then heating to 800 ℃;
6. open CH4And H2Gas valve, let in CH4And H2Mixed gas of (2), whichIn (H)2The flow rate of (2) is 5ml min-1，CH4The flow rate of (2) is 5ml min-1Adjusting the air pressure to 100 Pa;
7. turning on the inductively coupled plasma source, adjusting the power to 250W, and maintaining for 120 min;
8. turn off the plasma source, turn off CH4And H2Opening the Ar gas valve, introducing Ar as cooling gas at a flow rate of 10ml min-1After cooling to room temperature, taking out the vertically oriented graphene/graphene foam;
9. exposing the obtained vertically oriented graphene/graphene foam composite material to an environment with the ozone concentration of 200ppm, maintaining for 3min, modifying oxygen-containing functional groups on the surface of the vertically oriented graphene, and constructing a water flow channel, wherein the oxygen-containing functional groups comprise-OH, -CHO and-CHO; wherein, ozone is generated by a dielectric barrier discharge device, and air is used as a raw material; and obtaining the photo-thermal evaporation plate.
The optical diagram of the photothermal evaporation plate is shown as a in fig. 5, and the outer surface is black. The wettability of the photothermal evaporation plate is shown as b-d in fig. 5, the external vertically-oriented graphene light absorber 21 shows strong hydrophilicity, and the water contact angle is 26.0 °, which indicates that the vertically-oriented graphene light absorber 21 serves as a water flow channel and can guide the transmission of water through capillary action; the graphene foam thermal insulator 22 inside shows strong hydrophobicity, and the water contact angle is 130.5 degrees, which indicates that the graphene foam thermal insulator 22 repels the penetration of water, and the water flow channel on the surface layer can protect the graphene foam thermal insulator 22 from being wetted by water.
The high-temperature steam sterilization device provided by the embodiment operates under natural light, and the illumination intensity is 1.0-1.2kW m-2The standard biological indicator is used for testing the sterilization effect, when the color of the indicator is changed from purple to yellow, the sterilization failure is indicated, and when the color of the indicator is kept purple, the sterilization success is indicated. As shown in fig. 6, the temperature in the evaporation chamber reaches 121 ℃, i.e. the expected sterilization temperature, after 11min of operation, and the sufficient sterilization effect can be achieved by maintaining the temperature in the environment of high-temperature steam at 121 ℃ for 30min according to the WHO standard, so that the operation is stopped after 41min of operation. Sterilized biological indicatorThe cells were transferred to a 56 ℃ environment and incubated for 48 h. The indicator that was not sterilized appeared yellow and the indicator that was sterilized appeared purple, indicating successful sterilization.
The present invention is described in detail with reference to the embodiments, but the embodiments of the present invention are not limited by the above embodiments, and any other changes, substitutions, combinations, simplifications, etc. made under the guiding concept of the core patent of the present invention are included in the protection scope of the present invention.
Claims (7)
1. The high-temperature steam sterilization device is characterized by comprising a steam chamber, a light-gathering plate, an object-carrying disc, a water storage cup and a photo-thermal evaporation plate, wherein the light-gathering plate covers the steam chamber, the object-carrying disc and the water storage cup are assembled inside the steam chamber, and the photo-thermal evaporation plate is located in the water storage cup.
2. A high-temperature steam sterilization device as recited in claim 1, wherein the tray has a plurality of through holes in a vertical direction.
3. A high-temperature steam sterilization device as recited in claim 1, wherein the light-gathering plate gathers the light beam into a water cup; the cross section of the light-gathering plate is the same as that of the water storage cup, and the ratio of the cross sections is 10-100: 1, the light gathering plate and the water storage cup are assembled concentrically.
4. A high-temperature steam sterilizer as claimed in claim 1, wherein a tray on which the tray is mounted is provided inside the steam chamber.
5. A high-temperature steam sterilization device as recited in claim 1, wherein the carrying tray is provided with a groove in the center, and the size of the groove is equivalent to that of the bottom of the water storage cup.
6. A hot steam sterilization device as recited in claim 1, further comprising a sealing ring and a clamp for fixing the light collecting plate.
7. A high-temperature steam sterilization device as recited in claim 1, wherein the photothermal evaporation plate comprises a graphene foam insulator and a vertically oriented graphene light absorber covering an outer surface of the graphene foam insulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920633365.6U CN210673812U (en) | 2019-05-06 | 2019-05-06 | High-temperature steam sterilization device |
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| CN201920633365.6U CN210673812U (en) | 2019-05-06 | 2019-05-06 | High-temperature steam sterilization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101882A (en) * | 2019-05-06 | 2019-08-09 | 浙江大学 | A kind of high-temp steam sterilizing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101882A (en) * | 2019-05-06 | 2019-08-09 | 浙江大学 | A kind of high-temp steam sterilizing device |
| CN110101882B (en) * | 2019-05-06 | 2024-02-20 | 浙江大学 | High-temperature steam sterilization device |
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