CN210097703U

CN210097703U - Superclean bench of high-efficient sterilization

Info

Publication number: CN210097703U
Application number: CN201920751257.9U
Authority: CN
Inventors: 赵润柱; 罗雅馨; 冯雨; 刘云龙; 刘悦; 潘宇江
Original assignee: Taiyuan Institute of Technology
Current assignee: Taiyuan Institute of Technology
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-02-21
Anticipated expiration: 2029-05-23

Abstract

A superclean bench with high-efficiency sterilization relates to the technical field of work purification equipment, solves the problem that the conventional photocatalyst coating is low in auxiliary sterilization efficiency when used in the superclean bench, shortens the irradiation time of an ultraviolet lamp, and reduces radiation caused by long-time opening of the ultraviolet lamp; an ultraviolet lamp is arranged at the top in a clean room of the ultra-clean workbench, a photocatalyst medium carrier which is sequentially coated with a hydrophilic medium layer and a TiO ₂ photocatalyst layer is arranged on the inner wall of the clean room, the surface area ratio of the TiO ₂ photocatalyst layer to the clean room is 62-65%, and the thickness of the TiO ₂ photocatalyst layer is 0.5-1 mm; a temperature control device is also arranged in the purification chamber; the utility model discloses shorten the sterilization time, sterilization efficiency improves 35%, reduces the ultraviolet irradiation time to can effectively degrade harmful gas, reduce or avoid the work of laboratory exhaust facility, receive energy-conservation, reduce discharging, reduce the energy consumption and improve the comprehensive effect of working environment.

Description

Superclean bench of high-efficient sterilization

Technical Field

The utility model relates to a work clarification plant technical field, concretely relates to superclean bench of high-efficient sterilization.

Background

The super clean bench is a biotechnical working device with high universality and high local cleanliness, and has the function of providing a sterile environment for a local space. The working mechanism is to use 253.7nm ultraviolet generated by a high-boron ultraviolet lamp to kill bacteria. When in use, the machine needs to be started up 30 minutes in advance, and the ultraviolet sterilization lamp is started to thoroughly treat microorganisms accumulated on the inner surface of the operation area. Burn to the operator can be caused due to long-time radiation; in addition, a large amount of ozone is also released, causing air pollution.

The photocatalyst is a generic name of a photo-semiconductor material with a photocatalytic function, can generate a strong catalytic degradation function under the action of ultraviolet light, and catalyzes water or oxygen in the air into hydroxyl free radicals with strong oxidation capability, superoxide anion free radicals, active oxygen and other photo-generated active groups with strong oxidation capability, so that bacteria are effectively killed, toxins released by microorganisms are decomposed, and the functions of deodorization, pollution resistance, air purification and the like are achieved. And ZrO₂TiO compared with ZnO and other materials₂Has the advantages of fast degradation speed, wide degradation range, high stability, light corrosion resistance, low price, lasting and long-acting catalytic action and the likePlease: CN 204602232U is an ultra-clean work, which is to arrange a photocatalyst filter in an upper static pressure box and filter air through the photocatalyst filter; patent application No.: CN 105772135A a clean bench is also to coat a nanometer photocatalyst film layer on the carbon fiber filter screen of the air filter; patent application No.: CN 206304781U, a clean bench, is to coat a photocatalyst coating on the inner wall of the operation chamber, but no further research has been made on how much the area ratio of the photocatalyst coating to the inner wall of the operation chamber is, which results in the best sterilization effect, and under what environmental conditions the photocatalyst coating is provided, which can more effectively improve the sterilization efficiency. The current photocatalyst coating is only coated alone in actual operation, and the efficiency of sterilization cannot be optimized due to the influence of environmental conditions and the limitation of a bearing mode.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a superclean bench of high-efficient sterilization, has solved the problem that current photocatalyst coating is arranged in the superclean bench that the supplementary sterilization efficiency that exists is not high, shortens the ultraviolet lamp exposure time, reduces the ultraviolet lamp and opens the radiation that brings for a long time.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a superclean bench of high-efficient sterilization, includes the superclean bench body, superclean bench from the bottom up includes base, clean room and purification unit in proper order, purification unit top is equipped with the air intake, is equipped with the air inlet prefilter on the air intake, and air inlet prefilter below is equipped with centrifugal fan and filter, and top in the clean room still is equipped with the ultraviolet lamp the clean room inner wall on be provided with photocatalyst medium carrier, photocatalyst medium carrier on coat hydrophilic dielectric layer and TiO in proper order₂Photocatalyst layer, said TiO₂The surface area ratio of the photocatalyst layer to the purification chamber is 62-65%, and the TiO is₂The thickness of the photocatalyst layer is 0.5-1 mm; and a temperature control device is also arranged in the purification chamber.

Further preferably, said TiO₂Photocatalyst layerThe surface area ratio to the clean room was 65%.

Further preferably, the TiO is₂The thickness of the photocatalyst layer is 1 mm.

Further setting a structure, and an air quality detection device, an air composition detection device and an air humidity detection device are further arranged in the purification chamber.

Preferably, the thickness of the hydrophilic medium layer is 0.3-0.5 mm.

Preferably, the photocatalyst medium carriers are arranged on two side walls and a rear wall in the purification chamber.

The utility model discloses set up the photocatalyst medium carrier of cooperation ultraviolet lamp in superclean bench's clean room, coating TiO behind the hydrophilic dielectric layer on the carrier₂A photocatalyst layer, the coating structure of which makes TiO₂The photocatalyst layer is more stable, the service life of the photocatalyst layer is prolonged, and the photocatalyst layer is different from TiO₂The photocatalyst layer is directly coated on the inner wall of the purification chamber, the utility model discloses a medium carrier is supported, can assemble according to the size of the surface area of the inner wall of the purification chamber of different specifications more conveniently, reach the best sterilization efficiency; the utility model determines TiO on the basis of a large amount of experimental operations₂The relation between the photocatalyst layer and the surface area of the purification chamber obviously improves the sterilization efficiency, and particularly improves the sterilization efficiency by 35 percent for conventional escherichia coli; to bond with TiO₂The environment where the photocatalyst layer is sterilized is provided with a temperature control device, so that the indoor environment temperature can be effectively controlled to be 25-35 ℃, and TiO can be used₂The photocatalyst layer is combined with an ultraviolet lamp to achieve the best sterilization effect.

The utility model discloses produced beneficial effect does for prior art.

1) The utility model utilizes the existing ultraviolet light source as the power of the photocatalyst reaction, and does not consume extra energy. On the basis of the original ultraviolet sterilization, the photocatalyst is superposed, so that the photocatalyst and the ultraviolet sterilization have synergistic effect, the sterilization efficiency is improved, and the time for turning on the ultraviolet lamp is shortened.

2) The photocatalyst material is shaped by a photocatalyst medium carrier, is different from being directly sprayed on the inner wall of the workbench, can be more conveniently assembled and adjusted according to the surface areas of the inner walls of the purification chambers with different specifications, achieves the optimal sterilization efficiency, and is used along with the workbench for a long time.

3) By controlling TiO₂Ratio of photocatalyst layer to surface area of purification chamber and TiO₂The thickness of the photocatalyst layer achieves the best sterilization effect, the sterilization efficiency is improved by 35 percent, the sterilization time can be shortened, and the service efficiency of the superclean bench is improved.

4) The utility model discloses can reduce ultraviolet irradiation time, effectively degrade the harmful gas in the workstation simultaneously, reduce the work of the facility of airing exhaust, when beautifying operational environment, reach energy-conservation, reduce discharging, reduce the comprehensive effect of energy consumption.

Drawings

Fig. 1 is the utility model discloses a superclean bench's schematic structure diagram.

FIG. 2 is a schematic diagram of a photocatalyst medium carrier structure.

Wherein, 1 is a base, 2 is a purifying chamber, 3 is a purifying unit, 4 is an ultraviolet lamp, 5 is a photocatalyst medium carrier, 6 is a hydrophilic medium layer, 7 is TiO₂A photocatalyst layer, 8 is a full-automatic temperature control device.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

Examples

As shown in figure 1, the superclean bench for efficient sterilization comprises a superclean bench body, the superclean bench body sequentially comprises a base 1, a purification chamber 2 and a purification unit 3 from bottom to top, an air inlet is formed in the top of the purification unit 3, an air inlet prefilter is arranged on the air inlet, a centrifugal fan and a filter are arranged below the air inlet prefilter, and the top in the purification chamber 2 is provided with a centrifugal fan and a filterThe part is also provided with an ultraviolet lamp 4, a photocatalyst medium carrier 5 made of organic glass material is hung on the inner wall of the purifying chamber 2, as shown in figure 2, a hydrophilic medium layer 6 and TiO are sequentially coated on the photocatalyst medium carrier 5₂The photocatalyst layer 7 and the hydrophilic medium layer 6 mainly contain ethanol and have a thickness of 0.5mm, the photocatalyst medium carrier 5 has a length of 50cm and a width of 30cm, and the inner surface area of the purification chamber 2 is 1.38m²，TiO₂The surface area ratio of the photocatalyst layer to the purification chamber 2 is 65%, six photocatalyst medium carriers 5 are assembled and hung on two side walls and the back wall in the purification chamber 2, and TiO is used₂The thickness of the photocatalyst layer is 1 mm; the clean room 2 is also provided with a full automatic temperature control device 8, the full automatic temperature control device 8 is purchased from Yuyaotai temperature instrument factory, and the model is XMTD-9000.

Comparative example

Six photocatalyst medium carriers 5 are hung on the inner wall of one superclean workbench, and are numbered as one; the other station was not treated and served as a blank control, numbered No. two. Respectively placing the pre-cultured escherichia coli culture medium in an equal amount in a first superclean workbench and a second superclean workbench, simultaneously turning on an ultraviolet lamp, observing the state of escherichia coli colonies in the culture medium, respectively recording the killing time of escherichia coli, respectively taking the temperature, the smearing area and the like as single variables, repeating the second step again under the condition that other conditions are the same, and recording the number of the colonies in the culture medium every five minutes. The results are shown in Table 1.

Table 1 this example is compared to a blank sterilization rate under different irradiation conditions with an ultraviolet lamp.

The effect of the temperature inside the purification chamber 2 on the sterilization efficiency. The results are shown in Table 2.

Table 2 this example is compared to a blank sterilization time under clean room ambient temperature conditions.

Table 3 sterilization effect of uv light on experimental bacteria with different irradiation times.

For escherichia coli, when the area ratio of the escherichia coli reaches 65%, the sterilization rate is optimal, the escherichia coli can be completely killed within about 13 minutes, 7 minutes is shortened compared with the normal 20-minute time, and the sterilization efficiency is improved by 35%.

In the embodiment, a photocatalyst medium carrier 5 matched with an ultraviolet lamp 4 is arranged in a clean room 2 of a superclean bench, a hydrophilic medium layer 6 is coated on the carrier, and then TiO is coated on the carrier₂A photocatalyst layer 7 of such a coating structure as to make TiO₂The photocatalyst layer 7 is more stable, the service life of the photocatalyst layer is prolonged, and the photocatalyst layer is different from TiO₂The photocatalyst layer 7 is directly coated on the inner wall of the purification chamber 2, and the embodiment is supported by a medium carrier, so that the photocatalyst layer can be more conveniently assembled according to the surface areas of the inner walls of the purification chambers with different specifications, and the optimal sterilization efficiency is achieved; on the basis of a large number of experimental operations, the TiO is determined₂The relation between the photocatalyst layer 7 and the surface area of the purification chamber 2 obviously improves the sterilization efficiency, and particularly improves the sterilization efficiency by 35 percent for conventional escherichia coli; to bond with TiO₂The environment where the photocatalyst layer 7 is sterilized is provided with a temperature control device, so that the indoor environment temperature can be effectively controlled to be 25-35 ℃, and TiO can be used₂The photocatalyst layer is combined with an ultraviolet lamp to achieve the best sterilization effect.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims

1. An efficient sterilization superclean bench comprises a superclean bench body, whereinThe super clean bench body from bottom to top includes base, clean room and purification unit in proper order, the purification unit top is equipped with the air intake, is equipped with the air intake prefilter on the air intake, and air intake prefilter below is equipped with centrifugal fan and filter, and the top in the clean room still is equipped with the ultraviolet lamp, its characterized in that the clean room on be provided with photocatalyst medium carrier, photocatalyst medium carrier on coat hydrophilic dielectric layer and TiO medium layer in proper order₂Photocatalyst layer, said TiO₂The surface area ratio of the photocatalyst layer to the purification chamber is 62-65%, and the TiO is₂The thickness of the photocatalyst layer is 0.5-1 mm; and a temperature control device is also arranged in the purification chamber.

2. An efficient sterilization clean bench as claimed in claim 1, wherein said TiO is selected from the group consisting of₂The surface area ratio of the photocatalyst layer to the purification chamber was 65%.

3. The efficient sterilization clean bench of claim 1, wherein said TiO is selected from the group consisting of₂The thickness of the photocatalyst layer is 1 mm.

4. The high-efficiency sterilization clean bench according to claim 1, wherein an air quality detection device, an air composition detection device and an air humidity detection device are further arranged in the clean room.

5. The efficient sterilization clean bench according to claim 1, wherein the thickness of said hydrophilic medium layer is 0.3-0.5 mm.

6. The clean bench of claim 1, wherein the photocatalyst medium carriers are disposed on two side walls and a rear wall of the clean room.