A new type of table ventilation device

Abstract

This application provides a novel tabletop ventilation device, relating to the field of reproductive toxicity testing technology for non-clinical safety evaluation. It includes a hood and an exhaust duct. The hood is generally polyhedral, with an openable and closable door on at least one side. One end of the exhaust duct is connected to at least one hood, and the other end is connected to an exhaust system for discharging air from inside the hood to the outside of the laboratory. The hood is placed on a tabletop within the laboratory. The internal space of the hood is used to accommodate a microscope and specimens. The hood has an observation window, and the eyepiece of the microscope can be aligned with the observation window. By covering the microscope with the hood, the internal space of the hood is relatively sealed, which can confine the formaldehyde gas volatilized from formalin to a controllable area. When specimens are placed inside the hood for operation, the external exhaust system can provide power to promptly expel the air containing formaldehyde and other pollutants from the hood, effectively reducing the occupational exposure risks of respiratory damage and skin allergies for laboratory personnel.

Description

Technical Field

[0001] This utility model relates to the field of reproductive toxicity testing technology for non-clinical safety evaluation, and in particular to a novel tabletop ventilation device. Background Technology

[0002] In reproductive toxicity studies that are not clinically evaluated for safety, fetal visceral specimens must be preserved in 10% neutral phosphate buffered formalin fixative. The volatile formaldehyde in this solution is highly irritating, and long-term exposure to this environment can cause occupational hazards for workers, such as respiratory damage and skin allergies.

[0003] Fume hoods are typically used to promptly remove harmful gases from the laboratory work environment. While traditional fume hoods can solve the above problems, they have the following drawbacks:

[0004] 1. High purchase and maintenance costs: Fume hoods have high purchase costs and require regular maintenance.

[0005] 2. Limited internal operating space: Commercially available fume hoods are general-purpose equipment. Although they are large in size, the working space inside the fume hood is limited.

[0006] 3. The renovation is quite difficult: For old laboratories, the initial design did not reserve space for the installation of fume hoods, making the renovation and installation of fume hoods quite difficult. Utility Model Content

[0007] In view of the above situation, this utility model provides a novel tabletop ventilation device, which aims to solve the drawbacks of traditional fume hoods mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] This utility model provides a novel tabletop ventilation device, including a cover and an exhaust duct;

[0010] The cover is polyhedral in shape, with an openable and closable door on at least one side;

[0011] One end of the exhaust duct is connected to at least one hood, and the other end is connected to an exhaust system, which is used to exhaust the air inside the hood to the outside of the laboratory.

[0012] The enclosure is set on a table in the laboratory; the interior space of the enclosure is used to house the microscope and specimens; the enclosure has an observation window, and the eyepiece of the microscope can be aligned with the observation window.

[0013] In some embodiments of this utility model, at least one side of the cover is made of transparent material.

[0014] In some embodiments of this utility model, the cover is made of transparent acrylic material.

[0015] In some embodiments of this utility model, the cover is rectangular in shape, with overall dimensions of 45 cm in length, 45 cm in width, and 50 cm in height.

[0016] In some embodiments of this utility model, the upper front part of the cover has a slope, and the observation window is located on the slope.

[0017] In some embodiments of this utility model, the exhaust duct is made of acid and alkali resistant material.

[0018] In some embodiments of this utility model, an air quality monitoring mechanism is also included, which is used to monitor and digitize the air quality inside the enclosure.

[0019] In some embodiments of this invention, the air quality monitoring device includes a formaldehyde sensor.

[0020] In some embodiments of this invention, a warning mechanism is also included, which is associated with an air quality monitoring agency.

[0021] In some embodiments of this utility model, a data processing mechanism is also included. The air quality monitoring agency transmits the monitoring data to the data processing mechanism, and the data processing mechanism generates dynamic change curves and trend reports based on the monitoring data.

[0022] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0023] 1. The microscope is covered by a canopy, and the internal space of the canopy is relatively sealed, which can limit the formaldehyde gas volatilized from formalin to a controllable area. When the specimen is placed inside the canopy for operation, the air containing formaldehyde and other pollutants inside the canopy can be discharged in time through the external exhaust system, which can effectively reduce the risk of occupational exposure such as respiratory damage and skin allergies for laboratory personnel.

[0024] 2. Compared to conventional fume hoods, this device is compact, inexpensive, and space-saving, making it suitable for laboratories of different sizes and ages. This device only requires proper arrangement of exhaust ducts, eliminating the need for large-scale modifications to laboratory space and infrastructure, thus reducing renovation costs.

[0025] 3. This device supports single-unit independent operation or multiple units connected in parallel to the exhaust system. It can be flexibly configured according to the actual needs of the laboratory, solving the problem that traditional ventilation equipment is difficult to accurately handle local volatile sources, and achieving efficient local ventilation protection at a lower cost.

[0026] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a new type of tabletop ventilation device;

[0029] Figure 2 (a) is Figure 1 (a) is the front view of the new type of tabletop ventilation device; (b) is the right view of (a); and (c) is the left view of (a).

[0030] Figure 3 for Figure 2 The rear view of (a).

[0031] Icons: 1-Cover body, 11-Cover door, 12-Threading hole, 13-Observation window, 14-Circular through hole, 15-Bevel, 16-Connection hole, 2-Desktop. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "front", "rear", "top", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0034] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0035] The embodiments of this utility model will be described in detail below.

[0036] See Figures 1-3 This embodiment provides a novel tabletop ventilation device, including a cover 1 and an exhaust duct.

[0037] The cover 1 is a polyhedron (at least four faces). At least one side of the cover 1 is connected to an openable and closable door 11 via a hinge. When the door 11 is opened, it is convenient to put the microscope and specimen into the internal space of the cover 1. When the door 11 is closed, the internal space of the cover 1 is relatively sealed. The cover 1 is a cuboid or cube in shape.

[0038] The enclosure 1 has a wire hole 12 for the passage of cables from a microscope (electron microscope, not shown in the figure). The enclosure 1 has an observation window 13, which the microscope eyepiece can be aligned with for easy observation of specimens. To facilitate observation and operation of the microscope and specimens within the enclosure 1, at least one side of the enclosure 1 is made of a transparent material, such as transparent acrylic. Two circular through holes 14 are provided on the lower front side of the enclosure 1 for easy access. In a specific implementation scenario, the enclosure 1 is rectangular in shape, with overall dimensions of 45 cm long, 45 cm wide, and 50 cm high. The enclosure 1 is made of 5-10 mm thick acrylic sheet.

[0039] One end of the exhaust duct (not shown in the figure) is connected to at least one hood 1, and the other end is connected to an exhaust system (not shown in the figure), which is used to exhaust the air inside the hood 1 to the outside of the laboratory. In order to facilitate the connection between the hood 1 and the exhaust duct, a connection hole 16 is provided on the top or upper rear side of the hood 1.

[0040] The enclosure 1 can be installed on a tabletop 2 in the laboratory, where tools such as computers can also be placed. By covering the microscope with the enclosure 1, the relatively sealed internal space effectively confines formaldehyde gas emitted from formalin to a controllable area. When specimens are placed inside the enclosure 1 for operation, the external exhaust system provides power to promptly expel the air containing formaldehyde and other pollutants, effectively reducing the occupational exposure risks such as respiratory damage and skin allergies for laboratory personnel. Compared to conventional fume hoods, this device is compact, has low purchase cost, and does not occupy space, reducing space usage by approximately 90% and purchase cost by 60%, making it suitable for laboratories of different sizes and ages. This device only requires reasonable arrangement of exhaust ducts (e.g., running them from the ceiling), without the need for large-scale modifications to laboratory space and infrastructure, reducing renovation costs. This device supports single-unit independent operation or multiple units connected in parallel to the exhaust system, allowing for flexible configuration according to the actual needs of the laboratory. It solves the problem of traditional ventilation equipment's inability to accurately handle local volatile sources, achieving efficient local ventilation protection at a lower cost.

[0041] The upper front part of the cover 1 has a slope 15 at a 45-degree angle, and the observation window 13 is located on the slope 15. This is more ergonomic and makes it easier for experimental personnel to observe specimens for a long time, reducing neck and eye fatigue.

[0042] The exhaust ducts are made of acid and alkali resistant PVC, PP, or stainless steel, preventing corrosion from formaldehyde fumes and other chemical reagents, resulting in a long service life. Simultaneously, the exhaust ducts possess high strength and hardness while maintaining low cost. The wall thickness of the exhaust ducts is appropriately set according to the pipe diameter: for pipe diameters less than 100 mm, the wall thickness should not be less than 3 mm; for pipe diameters between 100 and 200 mm, the wall thickness should be 4 to 5 mm.

[0043] The exhaust system is an external device that provides power for this unit. The exhaust system includes a fan, and its parameters are as follows: air volume 1000 ~ 3000 m³ / h, air pressure 1000 ~ 3000 Pa, fan efficiency 70% ~ 85%, and noise level not exceeding 60 ~ 70 dB.

[0044] The new tabletop ventilation device also includes an air quality monitoring mechanism (not shown in the figure), which is installed inside the enclosure 1. The air quality monitoring mechanism is used to monitor and display the air quality inside the enclosure 1. In a specific implementation scenario, the air quality monitoring mechanism includes a formaldehyde sensor, which can monitor the air quality inside the enclosure 1 and display the corresponding monitoring data on a screen.

[0045] The parameters of the above formaldehyde sensor are as follows: measurement range of 0 ~ 5 PPm or 0 ~ 10 PPm, accuracy of ±0.01 PPm or higher, resolution of 0.001 PPm, response time within 15 seconds, measurement deviation not exceeding ±0.02 PPm, and change in accuracy and sensitivity not exceeding ±5% within one year.

[0046] The new tabletop ventilation device also includes a warning mechanism (not shown in the figure), which is linked to an air quality monitoring system. When the formaldehyde sensor or other air quality monitoring system detects poor air quality inside the enclosure 1 (such as when the formaldehyde concentration exceeds a preset upper limit), the warning mechanism will issue an audible and visual alarm to alert the test personnel, who can then take ventilation measures.

[0047] Air quality monitoring devices can be linked to the exhaust system. When air quality monitoring devices such as formaldehyde sensors detect poor air quality inside the enclosure 1, the exhaust system can be automatically activated to improve the automation level of the device.

[0048] The new tabletop ventilation device also includes a data processing unit (not shown in the figure). The data processing unit is connected to an air quality monitoring unit, which transmits monitoring data (such as formaldehyde sensors) to the data processing unit. The data processing unit continuously records the monitoring data and generates dynamic change curves and trend reports based on the monitoring data. In this way, scientific data support can be provided for laboratory environmental safety management. Managers can optimize experimental operation procedures and adjust the operation strategy of the exhaust system based on the dynamic change curves and trend reports, realizing the transformation from passive protection to active prevention and promoting the upgrading of laboratory safety management towards intelligence and refinement.

[0049] It should be noted that in other embodiments, this device may not include an air quality monitoring device such as a formaldehyde sensor. A handheld formaldehyde tester can be used instead of a formaldehyde sensor to further reduce the cost of the device.

[0050] Finally, it should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A novel tabletop ventilation device, characterized in that, Including the enclosure and exhaust ducts; The cover is polyhedral in shape, and at least one side of it is provided with an openable and closable door. One end of the exhaust duct is connected to at least one of the hoods, and the other end is connected to an exhaust system, which is used to exhaust the air inside the hood to the outside of the laboratory. The enclosure is set on a table in the laboratory; the interior space of the enclosure is used to accommodate a microscope and specimens; the enclosure has an observation window, and the eyepiece of the microscope can be aligned with the observation window.

2. The novel tabletop ventilation device according to claim 1, characterized in that, The cover is made of transparent material on at least one side.

3. The novel tabletop ventilation device according to claim 1, characterized in that, The cover is made of transparent acrylic material.

4. The novel tabletop ventilation device according to claim 1, characterized in that, The cover is rectangular in shape, with overall dimensions of 45 cm in length, 45 cm in width, and 50 cm in height.

5. The novel tabletop ventilation device according to claim 1, characterized in that, The upper front part of the cover has a slope, and the observation window is located on the slope.

6. The novel tabletop ventilation device according to claim 1, characterized in that, The exhaust duct is made of acid and alkali resistant material.

7. The novel tabletop ventilation device according to any one of claims 1 to 6, characterized in that, It also includes an air quality monitoring agency, which is used to monitor and quantify the air quality inside the enclosure.

8. The novel tabletop ventilation device according to claim 7, characterized in that, The air quality monitoring system includes a formaldehyde sensor.

9. The novel tabletop ventilation device according to claim 7, characterized in that, It also includes a warning agency, which is associated with the air quality monitoring agency.

10. The novel tabletop ventilation device according to claim 7, characterized in that, It also includes a data processing unit, to which the air quality monitoring agency transmits monitoring data, and the data processing unit generates dynamic change curves and trend reports based on the monitoring data.

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