Non-pipe movable large-load air purification type exhaust cabinet
By incorporating a lower cabinet-type exhaust gas treatment module and a ductwork structure within the ductless fume hood, the problem of limited top space is solved, achieving efficient purification of laboratory exhaust gas while ensuring safety and environmental protection.
Patent Information
- Application Number
- CN202520222802.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing ductless fume hoods have limited top space, which limits the number of filter and adsorption modules they can accommodate, making it difficult to effectively adsorb and purify laboratory exhaust gases and thus failing to meet environmental protection requirements.
The system adopts a lower cabinet-type exhaust gas treatment module, combined with a guide air duct and guide plate structure, and is equipped with multiple filter layers and ultraviolet lamps. It utilizes the guide air duct and the second air duct to guide the airflow, thereby increasing the exhaust gas treatment capacity and improving the purification efficiency.
It achieves effective treatment of waste gases with different specific gravities, reduces the leakage of toxic waste gases, ensures the health of operators and environmental safety, and enables real-time monitoring and automatic purification through sensors.
Smart Images

Figure CN223946452U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of exhaust cabinet, concretely to a pipeless movable large-load clean air type exhaust cabinet. BACKGROUND
[0002] When various experiments are carried out in the laboratory, various different toxic and harmful waste gas will be produced, and such experiments should be usually operated in the corresponding exhaust cabinet. The exhaust cabinet connects the fan and the air pipe, and then the toxic and harmful waste gas is introduced to the outdoor and discharged after purification treatment. However, due to the building height and environmental restrictions, the exhaust pipe and fan cannot be installed in the laboratory, which affects the experimental work. However, if the experimental waste gas is directly discharged without treatment, it will harm the operators and pollute the surrounding environment. Therefore, the pipeless exhaust cabinet and other ways are usually used to make up for the solution. However, due to the limited space at the top, the existing pipeless exhaust cabinet usually adopts a top filter structure, and the amount of filter adsorption modules is small, the direct discharge structure is single, and it is difficult to effectively adsorb and purify the waste gas, which meets the environmental protection requirements. In view of this problem, the utility model sets up a lower cabinet type waste gas treatment module, which has a large space and can set up many modules, and the waste gas treatment load is large. The exhaust uses a flow guide fan, and the flow guide plate is used to set up an up-pulling flow guide structure for waste gas with different specific gravities, so that various waste gas can be effectively treated, and the health of the operators and the safety of the environment are ensured. SUMMARY
[0003] The utility model aims at providing a pipeless movable large-load clean air type exhaust cabinet to solve the problems in the background technology.
[0004] In order to achieve the above object, the utility model provides the following technical scheme: A pipeless movable large -capacity net gas type exhaust cabinet, including upper cabinet and lower cabinet, the upper cabinet is provided with metal roof, the bottom of metal roof is provided with plastic lining, the bottom of plastic lining is provided with first air duct, the inner chamber outside of first air duct is provided with corrosion -resisting deflector, the rear side of metal roof is provided with fixed metal backplate, the inner side of fixed metal backplate is provided with corrosion -resisting lining, the front side of corrosion -resisting lining is provided with corrosion -resisting heat -resisting deflector, both sides of metal roof bottom are provided with metal side plate, the inner side of metal side plate is provided with the same deflector homogenization lining, the bottom of upper cabinet is provided with cabinet mesa, the front side of lower cabinet is provided with decorative panel, one side of decorative panel is provided with power socket and water gas control valve and electrical control system, the bottom of decorative panel is provided with lower cabinet door, the inner side of lower cabinet door is provided with waste gas (including acid mist) treatment system, the waste gas treatment system includes fan, the input end of fan is connected with upper cabinet deflection air duct, the output end of fan is connected with second air duct, both sides of second air duct are provided with first filter layer, the rear side of first filter layer is provided with no ozone ultraviolet lamp, the rear side of no ozone ultraviolet lamp is provided with light catalyst nanometer titanium grid, second filter layer, exhaust linked air duct and exhaust port interface, the air duct air inlet side of upper cabinet is provided with first TVOC sensor, the bottom exhaust air duct side of lower cabinet is provided with second TVOC sensor.
[0005] Preferably, the control system is electrically connected with the fan, and the surface of the control system is provided with control buttons.
[0006] Preferably, the bottom of the lower cabinet is provided with movable casters, and the movable casters are uniformly distributed.
[0007] Preferably, the front side of the metal roof is provided with a metal decorative panel, and the surface of the metal decorative panel is provided with a logo mark and an electronic display screen.
[0008] Preferably, the bottom of the metal decorative panel is provided with a transparent fixed front window, and the bottom of the transparent fixed front window is provided with a movable transparent front window.
[0009] Compared with the prior art, the utility model has the beneficial effects as follows:
[0010] The utility model discloses a waste gas treatment system is directly handled to the waste gas of experiment, solved the existing pipe ventilation cabinet in the field condition not to have, cannot install the situation of exhaust pipe, thereby cannot normally develop the problem of relevant experiment, through utilizing the first filter layer of lower cabinet, ozoneless ultraviolet lamp, photocatalyst nanometer titanium grating and second filter layer, improved the processing module installation space, increased waste gas treatment load, improved the processing efficiency, convenient maintenance and the replacement of processing module. Through adopting the flow guide air duct and the second air duct flow guide structure design, effectively solved the problem of different specific weight waste gas exhaust, improved the processing effect of acid mist including the waste gas of macromolecular weight greater than air specific weight, reduced the problem of existing toxic waste gas overflow invasion operating personnel and pollution environment, through setting up the first TVOC sensor at waste gas air inlet, when waste gas reaches the set value, can automatic starting system operation, purifies and handles the toxic waste gas and acid mist, through adopting the second TVOC sensor setting at waste gas treatment system exhaust passage, can on -line real -time evaluation waste gas treatment system's processing effect, so as to replace the purification adsorption module in time. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the structure schematic diagram of the utility model;
[0012] Figure 2 It is the structure schematic diagram of the utility model;
[0013] Figure 3 It is the structure schematic diagram of waste gas treatment system of the utility model.
[0014] In the drawing: 1, upper cabinet body;2, lower cabinet body;3, metal top plate;4, plastic lining plate;5, first air duct;6, corrosion -resistant heat -resistant flow guide plate;7, metal decorative panel;8, logo mark;9, electronic display screen;10, transparent fixed front window;11, movable transparent front window;12, fixed metal back plate;13, corrosion -resistant lining plate;14, corrosion -resistant heat -resistant flow guide plate;15, metal side plate;16, corrosion -resistant side lining plate;17, cabinet body table top;18, decorative panel;19, water gas control valve;20, power socket;21, control system;22, lower cabinet door;23, waste gas treatment system;24, fan;25, upper cabinet flow guide air duct;26, second air duct;27, first filter layer;28, ozoneless ultraviolet lamp;29, photocatalyst nanometer titanium grating;30, second filter layer;31, exhaust chain air duct;32, exhaust port interface;33, movable trundle;34, first TVOC sensor;35, second TVOC sensor. DETAILED DESCRIPTION
[0015] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0016] 1, upper cabinet body; 2, lower cabinet body; 3, metal top plate; 4, plastic lining plate; 5, first air duct; 6, corrosion-resistant heat-resistant flow guide plate; 7, metal decorative panel; 8, logo; 9, electronic display screen; 10, transparent fixed front window; 11, movable transparent front window; 12, fixed metal back plate; 13, corrosion-resistant lining plate; 14, corrosion-resistant heat-resistant flow guide plate; 15, metal side plate; 16, corrosion-resistant side lining plate; 17, cabinet top; 18, decorative panel; 19, water vapor control valve; 20, power socket; 21, control system; 22, lower cabinet door; 23, acid mist treatment system; 24, fan; 25, upper cabinet flow guide air duct; 26, second air duct; 27, first filter layer; 28, ozone-free ultraviolet lamp; 29, photocatalyst nano titanium grille; 30, second filter layer; 31, exhaust chain air duct; 32, exhaust port interface; 33, movable caster; 34, first TVOC sensor; 35, second TVOC sensor; The components of the components are general standard components or components known to those skilled in the art, and the structure and principle thereof can be known by the technical personnel through the technical manual or through the conventional experimental method. Example one:
[0017] Please refer to Figures 1-3, provide the following technical solutions, specifically disclosed: a pipeless movable large load net gas type exhaust cabinet, including the upper cabinet body 1 and the lower cabinet body 2, the upper cabinet body 1 is provided with metal top plate 3, the bottom of metal top plate 3 is provided with plastic lining plate 4, the bottom of plastic lining plate 4 is provided with first air duct 5, the inner cavity of first air duct 5 is provided with corrosion-resistant deflector 6, the rear side of metal top plate 3 is provided with fixed metal back plate 12, the inner side of fixed metal back plate 12 is provided with corrosion-resistant lining plate 13, the front side of corrosion-resistant lining plate 13 is provided with corrosion-resistant heat-resistant deflector 14, both sides of the bottom of metal top plate 3 are provided with metal side plate 15, the inner side of metal side plate 15 is provided with corrosion-resistant side lining plate 16, the bottom of upper cabinet body 1 is provided with cabinet top 17, the front side of lower cabinet body 2 is provided with decorative panel 18, one side of decorative panel 18 is provided with water vapor control valve 19, power socket 20 and control system 21, the bottom of decorative panel 18 is provided with lower cabinet door 22, the inner side of lower cabinet door 22 is provided with waste gas treatment system 23, waste gas treatment system 23 includes fan 24, the input end of fan 24 is communicated with upper cabinet deflector air duct 25, the output end of fan 24 is communicated with second air duct 26, both sides of second air duct 26 are provided with first filter layer 27, the rear side of first filter layer 27 is provided with ozone-free ultraviolet lamp 28, the rear side of ozone-free ultraviolet lamp 28 is provided with photocatalyst nanometer titanium grid 29, second filter layer 30, exhaust chain air duct 31 and exhaust port interface 32, one side of the air duct of upper cabinet body 1 is provided with first TVOC sensor 34, the bottom of lower cabinet body 2 is provided with second TVOC sensor 35 on one side of the exhaust air duct;
[0018] In actual use, by adopting waste gas treatment system 23, the waste gas generated in the experiment is directly treated, which solves the problem that the existing pipe exhaust cabinet cannot be installed in the field without exhaust pipe, so that the related experiment cannot be carried out normally, by using first filter layer 27, ozone-free ultraviolet lamp 28, photocatalyst nanometer titanium grid 29 and second filter layer 30, the installation space of the treatment module is improved, the waste gas treatment capacity is increased, the waste gas treatment efficiency is improved and the maintenance and replacement of the treatment module are facilitated. By adopting the deflector air duct 25 and the second air duct 26 deflector structure design, the problem of different specific gravity waste gas exhaust is effectively solved, the treatment effect of macromolecular waste gas including acid mist is improved, the problem of toxic waste gas overflow invading operators and polluting the environment is reduced, by setting first TVOC sensor 34 at the waste gas inlet, when the waste gas reaches the set value, the system can be automatically started to run, and the toxic waste gas and acid mist are purified, by setting second TVOC sensor 35 at the exhaust channel of waste gas treatment system, the treatment effect of waste gas treatment system can be evaluated online in real time, so as to replace the purification adsorption module in time. Example two:
[0019] Please refer to Figure 1 and Figure 2The utility model provides a technical scheme as follows, specifically discloses: control system 21 with fan 24 electric connection, and the surface of control system 21 is provided with control button, the bottom of lower cabinet body 2 is provided with movable trundle 33, movable trundle 33 evenly distributes, the bottom of metal decorative panel 7 is provided with transparent fixed front window 10, the bottom of transparent fixed front window 10 is provided with movable transparent front window 11, the front side of metal top plate 3 is provided with metal decorative panel 7, the surface of metal decorative panel 7 is provided with logo mark 8 and electronic display screen 9.
[0020] When using: by adopting waste gas treatment system 23, the waste gas generated by experiment is directly handled, solves the problem that the existing pipe ventilation cabinet cannot install exhaust pipe under the condition that the site condition is not provided, thereby cannot normally carry out relevant experiment. By utilizing the first filter layer 27 of lower cabinet, ozone-free ultraviolet lamp 28, photocatalyst nanometer titanium grid 29 and second filter layer 30, improve the installation space of processing module, increase the waste gas treatment load, improve the waste gas treatment efficiency and facilitate maintenance and replacement of processing module. By adopting the flow guide air duct 25 and exhaust distribution second air duct 26 flow guide structure design, effectively solve the problem of different specific weight exhaust air exhaust, improve the treatment effect of macromolecular waste gas including acid mist, reduce the problem of toxic waste gas overflow invasion operating personnel and pollution environment, by setting first TVOC sensor 34 in waste gas air inlet, when waste gas reaches the set value, can automatically start system operation, purifies and handles toxic waste gas and acid mist, by adopting the second TVOC sensor 35 set in waste gas treatment system exhaust passage, can on-line real-time evaluation waste gas treatment system's processing effect, so as to replace purification adsorption module in time.
[0021] It is important to note that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the present application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating
[0022] Also, to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the
[0023] Finally, it should be noted that the above-mentioned embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the protective scope of the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.
Claims
1. A ductless, movable, high-capacity clean air exhaust fan, comprising an upper cabinet (1) and a lower cabinet (2), characterized in that: The upper cabinet (1) is provided with a metal top plate (3), and a plastic liner (4) is provided at the bottom of the metal top plate (3). A first air duct (5) is provided at the bottom of the plastic liner (4), and a corrosion-resistant guide plate (6) is provided in the inner cavity of the first air duct (5). A fixed metal back plate (12) is provided on the rear side of the metal top plate (3), and a corrosion-resistant liner (13) is provided on the inner side of the fixed metal back plate (12). An air duct and a corrosion-resistant and heat-resistant guide plate (14) are provided on the front side of the corrosion-resistant liner (13). Metal side plates (15) are provided on both sides of the bottom of the metal top plate (3), and a corrosion-resistant side liner (16) is provided on the inner side of the metal side plate (15). A cabinet countertop (17) is provided at the bottom of the upper cabinet (1). A decorative panel (18) is provided on the front side of the lower cabinet (2). A water and gas control valve (19), a power socket (20), and a control system are provided on one side of the decorative panel (18). The decorative panel (18) has a lower cabinet door (22) at its bottom. The lower cabinet door (22) has an exhaust gas treatment system (23) on its inner side. The exhaust gas treatment system (23) includes a fan (24). The input end of the fan (24) is connected to the upper cabinet air duct (25). The output end of the fan (24) is connected to the second air duct (26). The second air duct (26) has a first filter layer (27) inside a box on both sides. The ozone-free ultraviolet lamp (28) is installed on the back side of the first filter layer (27). The ozone-free ultraviolet lamp (28) has a photocatalytic nano-titanium grid (29), a second filter layer (30), an exhaust air duct (31), and an exhaust port interface (32) on the back side of the ozone-free ultraviolet lamp (28). The upper cabinet (1) has a first TVOC sensor (34) on one side of the air inlet of the air duct. The lower cabinet (2) has a second TVOC sensor (35) on one side of the bottom exhaust air duct.
2. The ductless, movable, high-capacity clean air exhaust fan according to claim 1, characterized in that: The control system (21) is electrically connected to the fan (24), and the surface of the control system (21) is provided with control buttons.
3. The ductless, movable, high-capacity clean air exhaust fan according to claim 1, characterized in that: The bottom of the lower cabinet (2) is provided with movable casters (33), which are evenly distributed.
4. The ductless, movable, high-capacity clean air exhaust fan according to claim 1, characterized in that: The front side of the metal top plate (3) is provided with a metal decorative panel (7), and the surface of the metal decorative panel (7) is provided with a logo (8) and an electronic display screen (9).
5. A ductless, movable, high-capacity clean air exhaust fan according to claim 4, characterized in that: The bottom of the metal decorative panel (7) is provided with a transparent fixed front window (10), and the bottom of the transparent fixed front window (10) is provided with a movable transparent front window (11).