Novel ventilation cabinet

Abstract

The utility model discloses a novel ventilation cabinet which comprises a cabinet body, a partition plate is arranged below an exhaust port, the partition plate comprises a back plate part, a top plate part and a connecting plate part connected between the back plate part and the top plate part, the lower end of the back plate part extends to the position close to an operation table, and a plurality of back plate through holes are formed in the back plate part; inner side plates are arranged on the left side and the right side of the working area, outer side plates are arranged on the outer sides of the inner side plates, side cavities are formed between the inner side plates and the outer side plates, the tops of the side cavities are communicated with the atmosphere through first top ventilation openings, side plate through holes are formed in the inner side plates, and the side plate through holes are communicated with the side cavities and the working area. By adopting the technical scheme, the lower end of the back plate part of the partition plate extends to the position close to the operation table, direct air exhaust can be performed close to the operation table through the back plate through hole, and the internal and external pressure difference during air exhaust is balanced by arranging the channel for communicating the interior of the cabinet body with the external atmosphere, so that the ventilation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a novel fume hood and belongs to the technical field of experimental equipment. Background Art

[0002] Fume hoods are equipment used in laboratories, hospitals, factories and other environments to control the diffusion and emission of harmful gases, dust and chemicals. Fume hoods provide a safe working environment by forcing air to flow and filter, protecting operators and the environment from harmful substances. One of the main functions of a fume hood is to discharge harmful gases, which are led out of the room through an exhaust system to prevent them from causing harm to operators and the indoor environment. There is usually an exhaust port on the top of the cabinet, and harmful gases are discharged through a pipe, such as a laboratory anti-toxic fume hood disclosed in Chinese patent document CN210876688U, and another example is a laboratory air supply type fume hood disclosed in Chinese patent document CN210386907U. Since the exhaust port is generally set at the top of the cabinet, the air in the upper area of ​​the cabinet will be extracted first when the air is pumped out. However, harmful gases are usually generated from substances on the operating table in the cabinet. The area close to the operating table should be directly exhausted to improve the exhaust efficiency of harmful gases. In addition, the existing fume hoods do not have a special channel connecting the internal space of the cabinet to the outside atmosphere. When exhausting, the air pressure inside the fume hood decreases, and the outside atmosphere can only enter the cabinet through the gaps in the cabinet, which greatly affects the ventilation efficiency. Utility Model Content

[0003] Therefore, the purpose of the utility model is to provide a new type of fume hood which can improve ventilation efficiency when exhausting air.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a new type of fume hood, including a cabinet body, a work area is arranged in the cabinet body, a lifting door is arranged on the front side of the work area, the bottom of the work area is an operating table, and an exhaust port is arranged on the top of the cabinet body; a partition is arranged below the exhaust port, the partition includes a back plate portion, a top plate portion and a connecting plate portion connected between the back plate portion and the top plate portion, the lower end of the back plate portion extends to a position close to the operating table, and a plurality of back plate through holes are arranged on the back plate portion; inner panels are arranged on the left and right sides of the work area, an outer panel is arranged on the outer side of the inner panel, a side chamber is formed between the inner panel and the outer panel, the top of the side chamber is connected to the atmosphere through a first top vent, and side panel through holes are arranged on the inner panel, and the side panel through holes connect the side chamber and the work area.

[0005] A cabinet top plate is arranged above the partition, and the exhaust port is arranged on the cabinet top plate; a vertical plate is also arranged between the top plate portion and the cabinet top plate, and a plurality of top plate through holes are arranged on the top plate portion, and the top plate through holes and the exhaust port are distributed on both sides of the vertical plate; a second top vent is arranged on the cabinet top plate and above the top plate through holes.

[0006] Side covers are arranged on the upper parts of the inner plate and the outer plate, and the first top vent is arranged on the side covers.

[0007] The exhaust port is connected to the fan through an exhaust pipe.

[0008] A filter box is also arranged between the exhaust pipe and the fan.

[0009] The fan is a pluggable fan, comprising a heat dissipation shell and a motor fan blade body that is pluggably arranged inside the heat dissipation shell.

[0010] A plurality of casters are arranged below the cabinet.

[0011] The caster is a Fomar wheel.

[0012] By adopting the above technical scheme, compared with the prior art, the new fume hood of the utility model extends the lower end of the back plate of the partition to a position close to the operating table, and can directly extract air close to the operating table through the through hole of the back plate, and by providing a channel connecting the interior of the cabinet with the outside atmosphere, the internal and external pressure difference during air extraction is balanced, thereby improving ventilation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the novel fume hood of the utility model.

[0014] Figure 2 This is a schematic diagram of the cabinet door after opening.

[0015] Figure 3 Schematic diagram of the assembly structure of the partition.

[0016] Figure 4 Schematic diagram of the structure of the partition.

[0017] Figure 5 It is a structural diagram of the cabinet top.

[0018] Figure 6 Schematic diagram of the assembly structure of the inner panel. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below through the accompanying drawings and specific implementation methods.

[0020] like Figure 1-6As shown, the utility model provides a new type of fume hood, including a cabinet body 1, a working area 100 is arranged in the cabinet body 1, a lifting door 101 is arranged on the front side of the working area 100, the bottom of the working area 100 is an operating table 102, and an exhaust port 103 is arranged on the top of the cabinet body 1.

[0021] A partition 2 is arranged below the exhaust port 103, and the partition 2 includes a back plate portion 21, a top plate portion 22, and a connecting plate portion 23 connected between the back plate portion 21 and the top plate portion 22. The lower end of the back plate portion 21 extends to a position close to the operating table 102, and a plurality of back plate through holes 210 are arranged on the back plate portion 21.

[0022] An inner panel 3 is provided on the left and right sides of the working area 100, an outer panel 4 is provided on the outer side of the inner panel 3, a side chamber is formed between the inner panel 3 and the outer panel 4, a side cover 5 is provided on the upper part of the inner panel 3 and the outer panel 4, a first top vent 51 is provided on the side cover 5 for connecting the side chamber with the outside atmosphere, a side panel through hole 31 is provided on the inner panel 3, and the side panel through hole 31 connects the side chamber and the working area 100.

[0023] A cabinet top plate 11 is arranged above the partition 2, and the exhaust port 103 is arranged on the cabinet top plate 11; a vertical plate 6 is also arranged between the top plate portion 22 and the cabinet top plate 11, and a plurality of top plate through holes 221 are arranged on the top plate portion 22, and the top plate through holes 221 and the exhaust port 103 are distributed on both sides of the vertical plate 6; a second top vent 110 is arranged on the cabinet top plate 11 and above the top plate through holes 221.

[0024] The exhaust port 103 is connected to the fan 7 through the exhaust pipe 8, and a filter box 9 is also provided between the exhaust pipe 8 and the fan 7. The filter box is an activated carbon box adsorption device, which has the characteristics of dust removal and antibacterial, clean and fresh air, and high safety. The activated carbon box adopts a triple filtration treatment method: the first primary filtration, the second HEPA filtration (inhibiting PM2.5 and blocking smoke), and the third activated carbon filtration to remove formaldehyde, odor, sterilize and remove dust.

[0025] The fan 7 is a plug-in fan, comprising a heat dissipation housing and a motor fan body pluggably arranged inside the heat dissipation housing. The advantage of the plug-in fan is that the pipeline and power supply do not need to be removed during maintenance or replacement, and the motor fan body can be directly disassembled.

[0026] A plurality of casters 10 are arranged below the cabinet 1 , and the casters are Fomar casters that can be purchased directly on the market.

[0027] By adopting the above technical scheme, compared with the prior art, the new fume hood of the utility model extends the lower end of the back plate portion 21 of the partition 2 to a position close to the operating table 102, and can directly exhaust air close to the operating table 102 through the back plate through hole 210, and by providing a channel connecting the interior of the cabinet body 1 with the external atmosphere, the internal and external pressure difference during exhaust is balanced, thereby improving the ventilation efficiency.

[0028] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the invention of the utility model.

Claims

1. A new type of fume hood, characterized by: It includes a cabinet body, a work area is arranged in the cabinet body, a lifting door is arranged on the front side of the work area, the bottom of the work area is an operating table, and an exhaust port is arranged on the top of the cabinet body; a partition is arranged below the exhaust port, the partition includes a back plate portion, a top plate portion and a connecting plate portion connected between the back plate portion and the top plate portion, the lower end of the back plate portion extends to a position close to the operating table, and a plurality of back plate through holes are arranged on the back plate portion; inner panels are arranged on the left and right sides of the work area, an outer panel is arranged on the outer side of the inner panel, a side chamber is formed between the inner panel and the outer panel, the top of the side chamber is connected to the atmosphere through a first top vent, and side panel through holes are arranged on the inner panel, and the side panel through holes connect the side chamber and the work area.

2. The novel fume hood according to claim 1, characterized in that: A cabinet top plate is arranged above the partition, and the exhaust port is arranged on the cabinet top plate; a vertical plate is also arranged between the top plate portion and the cabinet top plate, and a plurality of top plate through holes are arranged on the top plate portion, and the top plate through holes and the exhaust port are distributed on both sides of the vertical plate; a second top vent is arranged on the cabinet top plate and above the top plate through holes.

3. The novel fume hood according to claim 2, characterized in that: Side covers are arranged on the upper parts of the inner plate and the outer plate, and the first top vent is arranged on the side covers.

4. The novel fume hood according to any one of claims 1 to 3, characterized in that: The exhaust port is connected to the fan through an exhaust pipe.

5. The novel fume hood according to claim 4, characterized in that: A filter box is also arranged between the exhaust pipe and the fan.

6. The novel fume hood according to claim 4, characterized in that: The fan is a pluggable fan, comprising a heat dissipation shell and a motor fan blade body that is pluggably arranged inside the heat dissipation shell.

7. The novel fume hood according to any one of claims 1 to 3, characterized in that: A plurality of casters are arranged below the cabinet.

8. The novel fume hood according to claim 7, characterized in that: The caster is a Fomar wheel.

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