CN220176911U - Biological safety cabinet sterilized by ultraviolet rays and ozone - Google Patents

Abstract

The utility model belongs to the technical field of biosafety cabinets, and particularly relates to a biosafety cabinet with ultraviolet and ozone disinfection. Comprising: the biological safety cabinet comprises a biological safety cabinet body, wherein an ozone-free ultraviolet lamp and an ozone-containing ultraviolet lamp are arranged in a working area of the biological safety cabinet body; the top of the bellows of the biosafety cabinet body is communicated with a double-exhaust-port exhaust valve, the double-exhaust-port exhaust valve comprises a first exhaust section and a second exhaust section which are mutually communicated, a first air valve used for controlling the on-off of the first exhaust section is arranged in the first exhaust section, a second air valve used for controlling the on-off of the second exhaust section is arranged in the second exhaust section, and an air outlet of the second exhaust section is provided with an ozone filter used for filtering ozone in the processed air flow. The utility model can realize simple, efficient, safe, low-cost and rapid treatment of ozone, and solves various problems in the prior art.

Description

Biological safety cabinet sterilized by ultraviolet rays and ozone

Technical Field

The utility model belongs to the technical field of biosafety cabinets, and particularly relates to a biosafety cabinet with ultraviolet and ozone disinfection.

Background

At present, the biosafety cabinet on the market is generally provided with an ultraviolet lamp, and the ultraviolet lamp is divided into an ozone type and an ozone-free type. Most of the ultraviolet lamps of biosafety cabinets are of the ozone-free type, and few of the ultraviolet lamps of biosafety cabinets of the imported brands are of the ozone type. The reason for increasing ozone disinfection is that the ultraviolet lamp only can irradiate the working area and has disinfection dead angles, and can not disinfect the inside of the biosafety cabinet body and the article shielding part of the working area, but ozone can disinfect without dead angles.

However, after the biological safety cabinet is opened with the ozone disinfection function, even if a fan and a glass door of the biological safety cabinet are not opened, ozone volatilizes and diffuses into a laboratory from the inside of the biological safety cabinet to cause harm to personnel, after the ozone function of the biological safety cabinet is opened, the laboratory does not allow someone, after the ozone disinfection is finished, negative pressure ventilation is required to be opened, ozone is eliminated, and the problem that ozone is harmful to human bodies is solved, and in addition, the experimental time is wasted in the process of waiting for ozone dissipation.

To eliminate the harm of ozone, the common technical proposal is to connect an exhaust hood at the top of the biosafety cabinet to exhaust the ozone outdoors, but the disadvantage is that: the air in the laboratory is the constant temperature and humidity environment controlled by the air conditioner, and the outdoor gas of exhaust can waste the energy consumption in laboratory to increase the construction degree of difficulty and the expense in laboratory, especially when many biological safety cabinets are put in same laboratory, extravagant energy consumption is very much. Because the air quantity provided by the laboratory is different when the 1 biological safety cabinets are operated and the 2 biological safety cabinets and the 3 biological safety cabinets are operated, the air supply system and the air exhaust system of the laboratory are required to be mutually interlocked for control, and the construction difficulty of the air exhaust system is also very high. Therefore, how to simply, efficiently, safely, inexpensively and rapidly treat ozone is a need for solving the problems.

Disclosure of Invention

In order to solve the above problems in the prior art, i.e., to simply, efficiently, safely, inexpensively and rapidly treat ozone, the present utility model provides a biosafety cabinet for ultraviolet and ozone sterilization, which can simply, efficiently, safely, inexpensively and rapidly treat ozone, and can directly discharge the treated gas in a laboratory room without being discharged outdoors.

The embodiment of the utility model provides a biological safety cabinet for ultraviolet and ozone disinfection, which comprises: the biological safety cabinet comprises a biological safety cabinet body, wherein an ozone-free ultraviolet lamp and an ozone-containing ultraviolet lamp are arranged in a working area of the biological safety cabinet body; the biological safety cabinet is characterized in that the top of the bellows of the biological safety cabinet body is communicated with a double-exhaust-port exhaust valve, the double-exhaust-port exhaust valve comprises a first exhaust section and a second exhaust section which are mutually communicated, a first air valve used for controlling the on-off of the first exhaust section is arranged in the first exhaust section, a second air valve used for controlling the on-off of the second exhaust section is arranged in the second exhaust section, and an air outlet of the second exhaust section is provided with an ozone filter used for filtering ozone in air flow.

Through adopting above-mentioned technical scheme, when biological safety cabinet carries out ozone disinfection, the glass door is closed, there is ozone type ultraviolet lamp to be in the open state, first blast gate is in the closed state, first section of airing exhaust is in the shutoff state, the second blast gate is in the open state, the second section of airing exhaust is in ventilation state, the air current that produces in the working area of biological safety cabinet body and has ozone is discharged to indoor after section of airing exhaust and ozone filter through the second, and need not to discharge to outdoor again, ozone filter can adsorb and handle the ozone in the air current completely, can realize simply, high efficiency, safety, low-cost and handle ozone fast, the problem that exists among the prior art has been solved.

In the preferable technical scheme of the biosafety cabinet for ultraviolet and ozone disinfection, the height of the ozone-containing ultraviolet lamp is lower than that of the ozone-free ultraviolet lamp.

By adopting the technical scheme, because the sterilized articles are usually placed at the bottom of the working area of the biosafety cabinet body, the height of the ozone type ultraviolet lamp is lower than that of the ozone-free type ultraviolet lamp, and the articles needing to be sterilized can be in the ozone environment for a longer time, so that the better ozone sterilizing effect is achieved.

In the above-mentioned preferred technical scheme of the biosafety cabinet for ultraviolet and ozone disinfection, the ozone-containing ultraviolet lamp and the ozone-free ultraviolet lamp are both installed at the top of the biosafety cabinet body working area.

Through adopting above-mentioned technical scheme, can make the whole working area of biological safety cabinet body all be full of ozone, reach best ozone disinfection effect to can make whole working area all receive the illumination of ultraviolet lamp, can make the article that needs to be disinfected reach the disinfection effect of preferred.

In the preferable technical scheme of the biosafety cabinet for ultraviolet and ozone disinfection, the inlet end of the ozone filter is inserted into the air exhaust port of the second air exhaust section and is in plug-in fit with the second air exhaust section.

Through adopting above-mentioned technical scheme, set up the connected mode of ozone filter and second section of airing exhaust into the grafting cooperation, when carrying out ozone filter's maintenance or renewing, can be favorable to ozone filter's simplification dismouting, be convenient for change ozone filter.

In the preferable technical scheme of the ultraviolet and ozone disinfection biosafety cabinet, the first exhaust section is vertically arranged.

By adopting the technical scheme, the air flow which does not carry ozone is conveniently and smoothly discharged from the first exhaust section directly upwards.

In the preferable technical scheme of the biological safety cabinet for ultraviolet and ozone disinfection, the second exhaust section is horizontally arranged, and the ozone filter is horizontally arranged.

Through adopting above-mentioned technical scheme, because the weight of the air current that carries ozone can aggravate, the horizontal flow of more easily, with second section of airing exhaust, ozone filter horizontal arrangement, be favorable to carrying the longer contact ozone filter of air current of ozone more, ozone filter can filter the processing to the air current for a longer time, can filter the ozone in the air current completely clean.

In the above-mentioned preferred technical scheme of the biological safety cabinet for ultraviolet and ozone disinfection, the on-off control circuit board of the ozone type ultraviolet lamp, the on-off control circuit board of the first air valve and the on-off control circuit board of the second air valve are all electrically connected with the MCU of the biological safety cabinet body, the ozone type ultraviolet lamp, the first air valve and the second air valve are all controlled by the MCU of the biological safety cabinet body in a linkage manner, and the first air valve and the second air valve are controlled by the MCU of the biological safety cabinet body in a linkage manner.

Through adopting above-mentioned technical scheme, when opening there is ozone type ultraviolet lamp, MCU can the first blast gate of automatic control close, and MCU automatic control second blast gate opens, makes the whole clean processing of participating in ozone to ozone in the air current of ozone filter, has realized automated control, and first blast gate and second blast gate have realized interlocking each other moreover, can not open first blast gate and second blast gate simultaneously, realizes the safety interlock of first blast gate and second blast gate.

In the preferable technical scheme of the biological safety cabinet for ultraviolet and ozone disinfection, the biological safety cabinet body is provided with an audible and visual alarm, and the audible and visual alarm is electrically connected with the MCU of the biological safety cabinet body; the MCU of the biological safety cabinet body records the accumulated running time T1 of the ozone type ultraviolet lamp, compares the accumulated running time T1 of the ozone type ultraviolet lamp with the service life T2 of the ozone filter, and triggers the audible and visual alarm to carry out audible and visual alarm when T1 = T2.

Through adopting above-mentioned technical scheme, when ozone filter life-span used up, MCU automatic touching audible and visual alarm makes audible and visual alarm send audible and visual alarm, reminds operating personnel in time to change ozone filter, avoids because not in time changing ozone filter and leads to the harm to experimental environment and operating personnel production.

In the preferred technical scheme of the biosafety cabinet for disinfecting the ultraviolet rays and the ozone, a fan is arranged in a bellows of the biosafety cabinet body, a control circuit board of the fan and an on-off control circuit board of the ozone type ultraviolet lamp are electrically connected with an MCU of the biosafety cabinet body, the fan and the ozone type ultraviolet lamp are controlled by the MCU of the biosafety cabinet body in a linkage mode, and when the ozone type ultraviolet lamp is started, the fan runs at a low speed.

Through adopting above-mentioned technical scheme, when having ozone type ultraviolet lamp to open, MCU control fan is automatic to be run at a low speed, can accelerate ozone at the inside diffusion of the workspace of biological safety cabinet body.

In the preferable technical scheme of the biosafety cabinet for disinfecting by ultraviolet rays and ozone, an air supply filter is further arranged in the air box of the biosafety cabinet body, and the air supply filter is positioned at the junction of the air box of the biosafety cabinet body and the working area.

By adopting the technical scheme, the air in the working area of the biosafety cabinet is filtered by the air supply filter and then discharged into the environment, so that the aim of protecting the environment is fulfilled.

As will be appreciated by those skilled in the art, embodiments of the present utility model provide a biosafety cabinet for ultraviolet and ozone disinfection comprising: the biological safety cabinet comprises a biological safety cabinet body, wherein an ozone-free ultraviolet lamp and an ozone-containing ultraviolet lamp are arranged in a working area of the biological safety cabinet body; the top of the bellows of the biosafety cabinet body is communicated with a double-exhaust-port exhaust valve, the double-exhaust-port exhaust valve comprises a first exhaust section and a second exhaust section which are mutually communicated, a first air valve used for controlling the on-off of the first exhaust section is arranged in the first exhaust section, a second air valve used for controlling the on-off of the second exhaust section is arranged in the second exhaust section, and an air outlet of the second exhaust section is provided with an ozone filter used for filtering ozone in the processed air flow.

When the biological safety cabinet carries out ozone disinfection, the glass door is closed, the ozone type ultraviolet lamp is in the open state, the first air valve is in the closed state, the first exhaust section is in the blocking state, the second air valve is in the open state, the second exhaust section is in the ventilation state, the air flow with ozone generated in the working area of the biological safety cabinet body is discharged indoors after passing through the second exhaust section and the ozone filter, and the air flow is not required to be discharged outdoors, the ozone filter can completely adsorb and treat the ozone in the air flow, and the ozone treatment device can realize simplicity, high efficiency, safety, low cost and rapid ozone treatment and solve the problems existing in the prior art.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present utility model and, together with the description, serve to explain the principles of the utility model, and, as will be apparent to those skilled in the art, are directed to some embodiments of the utility model and, together with the description, serve to obtain further drawings from which the person skilled in the pertinent art will be able to make and use the utility model without the aid of inventive faculty.

FIG. 1 is a state diagram of a glass door of a biosafety cabinet provided by an embodiment of the utility model in a closed state, and an ozone-free ultraviolet lamp and an ozone-containing ultraviolet lamp are both on;

FIG. 2 is a state diagram of a glass door of a biosafety cabinet provided by an embodiment of the utility model in a closed state, wherein an ozone-free ultraviolet lamp is turned on, and an ozone-containing ultraviolet lamp is turned off;

fig. 3 is a state diagram of a glass door of a biosafety cabinet provided by an embodiment of the utility model in an open state, and an ozone-free ultraviolet lamp and an ozone-containing ultraviolet lamp are both closed.

Reference numerals:

100-a biosafety cabinet body; 110-an ozone-free ultraviolet lamp; 120-an ozone type ultraviolet lamp; 130-a fan; 140-an air supply filter;

200-double exhaust outlet type exhaust valve; 210-a first exhaust section; 220-a second exhaust section; 230-a first damper; 240-a second damper;

300-ozone filter;

400-audible and visual alarm.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Just as above-mentioned in the background art, after the biological safety cabinet opened the ozone disinfection function, even do not open biological safety cabinet's fan and glass door, ozone also can volatilize from biological safety cabinet inside and spread to the laboratory, produces harm to personnel, after opening biological safety cabinet's ozone function, laboratory does not allow someone, after the ozone disinfection is accomplished, needs to open negative pressure ventilation, eliminates ozone, and the problem that causes is ozone not only endangers the human body, and in the in-process of waiting for ozone to dispel, has wasted the experimental time.

To eliminate the harm of ozone, the common technical proposal is to connect an exhaust hood at the top of the biosafety cabinet to exhaust the ozone outdoors, but the disadvantage is that: the air in the laboratory is the constant temperature and humidity environment controlled by the air conditioner, and the outdoor gas of exhaust can waste the energy consumption in laboratory to increase the construction degree of difficulty and the expense in laboratory, especially when many biological safety cabinets are put in same laboratory, extravagant energy consumption is very much. Because the air quantity provided by the laboratory is different when the 1 biological safety cabinets are operated and the 2 biological safety cabinets and the 3 biological safety cabinets are operated, the air supply system and the air exhaust system of the laboratory are required to be mutually interlocked for control, and the construction difficulty of the air exhaust system is also very high. Therefore, how to simply, efficiently, safely, inexpensively and rapidly treat ozone is a need for solving the problems.

Therefore, in order to improve or solve the technical problems, the embodiment of the utility model provides an ultraviolet and ozone disinfection biosafety cabinet, in the technical scheme provided by the embodiment of the utility model, a double-exhaust-port exhaust valve communicated with the inside of the biosafety cabinet is arranged at the top of the biosafety cabinet, an ozone filter is arranged at one exhaust port of the double-exhaust-port exhaust valve, and an ozone-free ultraviolet lamp are arranged in a working area of a biosafety cabinet body. When the biosafety cabinet carries out ozone disinfection, the glass door is closed, the ozone type ultraviolet lamp and the ozone-free type ultraviolet lamp are in the open state, the air flow with ozone generated in the working area of the biosafety cabinet body is discharged indoors after passing through the ozone filter, and the air flow is not required to be discharged outdoors, the ozone filter can completely adsorb and treat the ozone in the air flow, so that the ozone can be simply, efficiently, safely, low-cost and rapidly treated, and the problem existing in the prior art is solved.

The following describes in detail the biosafety cabinet for ultraviolet and ozone sterilization provided by the embodiment of the utility model with reference to fig. 1 to 3.

Fig. 1 is a state diagram of a glass door of a biosafety cabinet provided by an embodiment of the utility model in a closed state, in which an ozone-free ultraviolet lamp 110 and an ozone-containing ultraviolet lamp 120 are both turned on, fig. 2 is a state diagram of a glass door of a biosafety cabinet provided by an embodiment of the utility model in a closed state, in which an ozone-free ultraviolet lamp 110 is turned on, in which an ozone-containing ultraviolet lamp 120 is turned off, and fig. 3 is a state diagram of a glass door of a biosafety cabinet provided by an embodiment of the utility model in an opened state, in which an ozone-free ultraviolet lamp 110 and an ozone-containing ultraviolet lamp 120 are both turned off. Referring to fig. 1 to 3, an embodiment of the present utility model provides a biosafety cabinet for ultraviolet and ozone disinfection, comprising: the biological safety cabinet body 100, the rear side wall in the working area of the biological safety cabinet body 100 is provided with an ozone-free ultraviolet lamp 110 and an ozone-containing ultraviolet lamp 120; the top of the bellows of the biosafety cabinet body 100 is communicated with a double-exhaust-port exhaust valve 200, the double-exhaust-port exhaust valve 200 comprises a first exhaust section 210 and a second exhaust section 220 which are communicated with each other, a first air valve 230 for controlling the on-off of the first exhaust section 210 is rotationally arranged in the first exhaust section 210, a second air valve 240 for controlling the on-off of the second exhaust section 220 is rotationally arranged in the second exhaust section 220, and an air outlet of the second exhaust section 220 is provided with an ozone filter 300 for filtering ozone contained in the processed air flow.

Specifically, when the biosafety cabinet performs ozone disinfection, the glass door is closed, the ozone type ultraviolet lamp 120 is in an on state, the first air valve 230 is in an off state, the first air exhaust section 210 is in a blocking state, the second air valve 240 is in an on state, the second air exhaust section 220 is in a ventilation state, the air flow with ozone generated in the working area of the biosafety cabinet body 100 is exhausted into the room after passing through the second air exhaust section 220 and the ozone filter 300, and is not required to be exhausted to the outside, the ozone filter 300 can completely adsorb and treat the ozone in the air flow, and the ozone treatment device can realize simple, efficient, safe, low-cost and rapid ozone treatment and solve the problems in the prior art.

Referring to fig. 1 to 3, in some embodiments provided by the present utility model, an exemplary first exhaust section 210 is vertically arranged, so that an air flow without ozone is smoothly discharged from the first exhaust section 210 directly upward. The second exhaust section 220 is horizontally disposed and the ozone filter 300 is horizontally disposed. Because the weight of the air flow carrying ozone will be heavy, it is easier to flow horizontally, the second exhaust section 220 and the ozone filter 300 are horizontally arranged, which is more beneficial to the contact of the air flow carrying ozone with the ozone filter 300 for a longer time, the ozone filter 300 can filter the air flow for a longer time, and the ozone in the air flow can be completely filtered.

Referring to fig. 1 to 3, in some embodiments provided by the present utility model, an exemplary on/off control circuit board with an ozone type ultraviolet lamp 120, an on/off control circuit board with a first air valve 230 and an on/off control circuit board with a second air valve 240 are all electrically connected with an MCU of a biosafety cabinet body 100, the ozone type ultraviolet lamp 120, the first air valve 230 and the second air valve 240 are all controlled by the MCU of the biosafety cabinet body 100 in a linkage manner, and the first air valve 230 and the second air valve 240 are controlled by the MCU of the biosafety cabinet body 100 in a linkage manner.

Specifically, when the ozone type ultraviolet lamp 120 is turned on, the MCU automatically controls the first air valve 230 to be turned off, and the MCU automatically controls the second air valve 240 to be turned on, so that the ozone filter 300 is fully involved in the cleaning treatment of ozone in the air flow, thereby realizing automatic control, and the first air valve 230 and the second air valve 240 are interlocked with each other, i.e., the first air valve 230 and the second air valve 240 cannot be simultaneously turned on, thereby realizing the safety interlock of the first air valve 230 and the second air valve 240.

Referring to fig. 1 to 3, in some embodiments provided by the present utility model, an audible and visual alarm 400 is fixedly connected to the top of the bellows of the biosafety cabinet body 100, and the audible and visual alarm 400 is electrically connected to the MCU of the biosafety cabinet body 100; the MCU of the biosafety cabinet body 100 records the accumulated running time T1 of the ozone type uv lamp 120, and compares the accumulated running time T1 of the ozone type uv lamp 120 with the life T2 of the ozone filter 300, and when t1=t2, the MCU of the biosafety cabinet body 100 triggers the audible and visual alarm 400 to perform audible and visual alarm.

Specifically, when the life of the ozone filter 300 is exhausted, the MCU automatically triggers the audible and visual alarm 400, so that the audible and visual alarm 400 emits an audible and visual alarm to remind an operator to replace the ozone filter 300 in time, and the damage to the experimental environment and the operator caused by the fact that the ozone filter 300 is not replaced in time is avoided.

Referring to fig. 1 to 3, in some embodiments provided by the present utility model, an exemplary blower 130 is fixedly installed in a bellows of the biosafety cabinet body 100, and the blower 130 is used to convey an air flow in the biosafety cabinet body 100 to the outside of the biosafety cabinet body 100; the control circuit board of the fan 130 and the on-off control circuit board with the ozone type ultraviolet lamp 120 are electrically connected with the MCU of the biosafety cabinet body 100, the fan 130 and the ozone type ultraviolet lamp 120 are controlled by the MCU of the biosafety cabinet body 100 in a linkage way, and when the ozone type ultraviolet lamp 120 is started, the fan 130 runs at a low speed. Specifically, when the ozone type ultraviolet lamp 120 is turned on, the MCU controls the blower 130 to automatically run at a low speed, so that ozone can be accelerated to diffuse inside the working area of the biosafety cabinet body 100.

Referring to fig. 1 to 3, in some embodiments of the present utility model, an ozone-containing uv lamp 120 and an ozone-free uv lamp 110 are installed at the top of the back plate of the working area of the biosafety cabinet body 100, so that the whole working area of the biosafety cabinet body 100 can be fully filled with ozone, an optimal ozone disinfection effect can be achieved, and the whole working area can be fully illuminated by the uv lamp, so that the objects to be disinfected can achieve a better disinfection effect. In addition, the height of the ozone-containing ultraviolet lamp 120 is lower than that of the ozone-free ultraviolet lamp 110, and it is easy to understand that since the sterilized articles are generally placed at the bottom of the working area of the biosafety cabinet body 100, the height of the ozone-containing ultraviolet lamp 120 is lower than that of the ozone-free ultraviolet lamp 110, and the articles to be sterilized can be kept in the ozone environment for a longer time, thereby achieving a better ozone sterilizing effect.

Referring to fig. 1 to 3, in some embodiments of the present utility model, an air supply filter 140 is fixedly installed in the bellows of the biosafety cabinet body 100, and the air supply filter 140 is located at the junction between the bellows and the working area of the biosafety cabinet body 100, it should be noted that the air supply filter 140 may be a high-efficiency air filter (high-efficiency particulate air filter, HEPA filter). Specifically, the air in the working area of the biosafety cabinet is filtered by the air supply filter 140 and then discharged to the environment, thereby achieving the purpose of protecting the environment.

In summary, when the biosafety cabinet performs ozone disinfection, the glass door is closed, the ozone-type ultraviolet lamp 120 and the ozone-free ultraviolet lamp 110 are both in the on state, the MCU of the biosafety cabinet body 100 controls the first damper 230 to be in the off state, the first air exhaust section 210 is in the blocking state, the second damper 240 is in the on state, the second air exhaust section 220 is in the ventilation state, the air flow with ozone generated in the working area of the biosafety cabinet body 100 is exhausted to the room after passing through the second air exhaust section 220 and the ozone filter 300, and the ozone filter 300 can completely adsorb and treat the ozone in the air flow without exhausting to the outside.

When the biosafety cabinet is used for ozone-free disinfection, the glass door is closed, the ozone-free ultraviolet lamp 120 is in a closed state, the ozone-free ultraviolet lamp 110 is in an open state, the first air valve 230 is in a closed state, the first air exhaust section 210 is in a blocking state, the second air valve 240 is in a closed state, the second air exhaust section 220 is in a blocking state, and an operator can select whether to open the fan 130 according to different requirements.

When the glass door of the biosafety cabinet body 100 is in an open state, the ozone-free ultraviolet lamp 120 and the ozone-free ultraviolet lamp 110 are both in a closed state, the MCU of the biosafety cabinet body 100 controls the blower 130 to operate at a normal speed, the first air valve 230 is in an open state, the first air exhaust section 210 is in a ventilation state, the second air valve 240 is in a closed state, and the second air exhaust section 220 is in a blocking state.

In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A biological safety cabinet sterilized by ultraviolet rays and ozone,

characterized by comprising the following steps: the biological safety cabinet comprises a biological safety cabinet body, wherein an ozone-free ultraviolet lamp and an ozone-containing ultraviolet lamp are arranged in a working area of the biological safety cabinet body;

the biological safety cabinet is characterized in that the top of the bellows of the biological safety cabinet body is communicated with a double-exhaust-port exhaust valve, the double-exhaust-port exhaust valve comprises a first exhaust section and a second exhaust section which are mutually communicated, a first air valve used for controlling the on-off of the first exhaust section is arranged in the first exhaust section, a second air valve used for controlling the on-off of the second exhaust section is arranged in the second exhaust section, and an air outlet of the second exhaust section is provided with an ozone filter used for filtering ozone in air flow.

2. The uv and ozone disinfection biosafety cabinet of claim 1 wherein the ozone-containing uv lamp is lower in height than the ozone-free uv lamp.

3. The uv and ozone disinfection biosafety cabinet according to claim 1 or 2, wherein said ozone-containing uv lamp and said ozone-free uv lamp are mounted on top of said biosafety cabinet body working area.

4. The uv and ozone disinfection biosafety cabinet according to claim 1, wherein an inlet end of the ozone filter is inserted into and mated with an exhaust port of the second exhaust section.

5. The uv and ozone disinfection biosafety cabinet according to claim 1 or 4, wherein said first exhaust section is vertically arranged.

6. The uv and ozone disinfection biosafety cabinet according to claim 1 or 4, wherein said second exhaust section is horizontally disposed and said ozone filter is horizontally disposed.

7. The biosafety cabinet for disinfecting by ultraviolet light and ozone according to claim 1 or 4, wherein the on-off control circuit board with the ozone type ultraviolet light, the on-off control circuit board with the first air valve and the on-off control circuit board with the second air valve are all electrically connected with the MCU of the biosafety cabinet body, the ozone type ultraviolet light, the first air valve and the second air valve are all controlled by the MCU of the biosafety cabinet body in a linkage way, and the first air valve and the second air valve are controlled by the MCU of the biosafety cabinet body in a linkage way.

8. The ultraviolet and ozone disinfection biosafety cabinet according to claim 7, wherein the biosafety cabinet body is provided with an audible and visual alarm, and the audible and visual alarm is electrically connected with an MCU of the biosafety cabinet body; the MCU of the biological safety cabinet body records the accumulated running time T1 of the ozone type ultraviolet lamp, compares the accumulated running time T1 of the ozone type ultraviolet lamp with the service life T2 of the ozone filter, and triggers the audible and visual alarm to carry out audible and visual alarm when T1 = T2.

9. The biological safety cabinet for ultraviolet and ozone disinfection according to claim 7, wherein a fan is arranged in a bellows of the biological safety cabinet body, a control circuit board of the fan and an on-off control circuit board of the ozone type ultraviolet lamp are electrically connected with an MCU of the biological safety cabinet body, the fan and the ozone type ultraviolet lamp are controlled by the MCU of the biological safety cabinet body in a linkage mode, and when the ozone type ultraviolet lamp is started, the fan runs at a low speed.

10. The biosafety cabinet for ultraviolet and ozone disinfection according to claim 1, wherein an air supply filter is further arranged in an air box of the biosafety cabinet body, and the air supply filter is located at a junction of the air box of the biosafety cabinet body and a working area.