阅读说明：本技术 智慧节能降噪无管负压净气排风柜及其制造方法 (Intelligent energy-saving noise-reducing ductless negative-pressure air-purifying exhaust cabinet and manufacturing method thereof ) 是由 谢永力 于 2020-06-19 设计创作，主要内容包括：本发明揭示了智慧节能降噪无管负压净气排风柜及其制造方法,排风柜包括柜体、依序设于柜体顶部的第一化学过滤模块、风机框架、以及第二化学过滤模块；风机框架内设置有促使柜体内空气进过第一化学过滤模块从第二化学过滤模块排出的风扇；第一化学过滤模块内设有若干间隔设置的搭载主网层,所述第二化学过滤模块的前端设有用于氧化有机污染物的非热等离子体的反应区域,所述第二化学过滤模块内设有与非热等离子体相对应配合的搭载次网层；所述搭载主网层和所述搭载次网层为粘附反应剂的多孔结构。本发明实现了针对特殊气体的排放净化进行良好室内循环性能,且具有智能节能环保效果。(The invention discloses an intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet and a manufacturing method thereof, wherein the exhaust cabinet comprises a cabinet body, a first chemical filtering module, a fan frame and a second chemical filtering module, wherein the first chemical filtering module, the fan frame and the second chemical filtering module are sequentially arranged at the top of the cabinet body; a fan which promotes the air in the cabinet body to enter the first chemical filtering module and discharge from the second chemical filtering module is arranged in the fan frame; a plurality of carrying main net layers arranged at intervals are arranged in the first chemical filtering module, a reaction area for oxidizing non-thermal plasma of organic pollutants is arranged at the front end of the second chemical filtering module, and a carrying secondary net layer correspondingly matched with the non-thermal plasma is arranged in the second chemical filtering module; the carrying main net layer and the carrying secondary net layer are in porous structures with adhesive reactants. The invention realizes good indoor circulation performance aiming at the emission and purification of special gas and has the intelligent energy-saving and environment-friendly effects.)

1. Energy-conserving no pipe negative pressure net gas exhaust cabinet of making an uproar that falls of wisdom, its characterized in that: the air conditioner comprises a cabinet body, a first chemical filtering module, a fan frame and a second chemical filtering module, wherein the first chemical filtering module, the fan frame and the second chemical filtering module are sequentially arranged at the top of the cabinet body;

a fan which promotes the air in the cabinet body to enter the first chemical filtering module and discharge from the second chemical filtering module is arranged in the fan frame;

a plurality of carrying main mesh layers arranged at intervals are arranged in the first chemical filtering module, a reaction area for oxidizing non-thermal plasma of organic pollutants is arranged at the front end of the second chemical filtering module, and a carrying secondary mesh layer correspondingly matched with the non-thermal plasma is arranged in the second chemical filtering module;

the carrying main net layer and the carrying secondary net layer are both of porous structures with adhesive reactants or catalysts, the reactants in the carrying main net layer react with alkaline gas and acidic gas, and the catalysts in the carrying secondary net layer react with organic pollutants;

the air outlet of the cabinet body is provided with a gas sensor for detecting the type and concentration of gas, the fan is connected with a wind speed sensor for detecting the rotating speed of the fan, and the gas sensor and the wind speed sensor are connected to the central control unit; the motor driving the fan is connected with a PCB board connected to the central control unit.

2. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 1, characterized in that: the carrying main net layer is made of porous foam or glass fiber.

3. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 1, characterized in that: the carrying main net layer comprises a first net layer, and citric acid is carried and adhered on the first net layer.

4. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 3, characterized in that: the carrying main net layer also comprises a second net layer, and one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, calcium bicarbonate and calcium hydroxide are carried and adhered on the second net layer.

5. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 1, characterized in that: the carrying secondary net layer is made of one or more of porous foam, a ceramic particle net, a ceramic Raschig ring, alumina, activated carbon, carbon cloth and a carbon felt.

6. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 1, characterized in that: the reaction region of the non-thermal plasma generates O₃An unstable gas; the secondary mesh layer comprises a third mesh layer, and MnO is adhered to the third mesh layer₂CuO, platinum or platinum oxide.

7. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 6, characterized in that: the carrying secondary net layer also comprises a fourth net layer arranged behind the third net layer, and a second catalyst for catalyzing the filtered gas of the third net layer is carried and adhered on the fourth net layer.

8. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 1, characterized in that: the cabinet body comprises an object placing plate, a front cabinet door and a back plate which are arranged on the front side and the back side of the object placing plate, and side plates arranged on the left side and the right side of the object placing plate; the front cabinet door is provided with a plurality of hinged folding transparent sheets, and the folding transparent sheet at the bottom layer is provided with an air inlet.

9. The intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet according to claim 1, characterized in that: the side edges of the fan frame and the supporting frame are provided with touch shells, a touch screen is installed in each touch shell, a central control unit is arranged in each touch shell, the touch screen is in control connection with the central control unit, the gas sensor sends detection data to the central control unit, and the type and concentration information of gas in the cabinet body is displayed in the touch screen; the wind speed sensor sends the detection data to the central control unit, and the information of the wind speed in the fan frame is displayed in the touch screen.

10. The manufacturing method of the intelligent energy-saving noise-reducing ductless negative-pressure air-purifying exhaust cabinet is characterized by comprising the following steps of:

1) forming a first net layer and a second net layer by adopting porous foam or glass fiber holes, and forming a third net layer and a fourth net layer by adopting any one of porous foam, a ceramic particle net, a ceramic raschig ring, alumina, activated carbon, carbon cloth and a carbon felt;

2) spraying glue, namely uniformly spraying thermosensitive glue on the first net layer to the fourth net layer;

3) naturally drying;

4) powder is scattered, acid reactant is scattered on the first net layer, and alkaline gas in the air is purified; spreading an alkaline reactant on the second net layer to purify acid gas in the air; catalysts are scattered on the third net layer and the fourth net layer to purify organic pollutants in the air;

5) the first net layer and the second net layer are erected in an aluminum alloy frame to form a first chemical filter module; the third net layer and the fourth net layer are erected in an aluminum alloy frame to form a second chemical filtering module;

6) the mounting front end of the second chemical filtering module is provided with a reaction area of non-thermal plasma, and unstable active gas is generated in the reaction area through two electrodes;

7) a fan for exhausting gas from the second chemical filtering module is arranged between the first chemical filtering module and the second chemical filtering module;

8) each chemical filtration module corner adopts EPDM to seal, installs to the cabinet body fixed.

Technical Field

The invention belongs to the technical field of medical laboratory instruments, and particularly relates to an intelligent energy-saving noise-reducing ductless negative-pressure air purification exhaust cabinet and a manufacturing method thereof.

Background

In a biopharmaceutical factory, in a pharmaceutical engineering or a laboratory, a large amount of waste gas containing dust and microorganisms is easily generated due to factors such as drug grinding and drug reaction, and is discharged into the air to easily pollute the environment, so that the air is required to be purified. The pollutants present in the factory building or in the laboratory of the biopharmaceutical factory consist mainly of alkaline gases, acid gases, organic pollutants.

In the prior art, most air purification devices applied to biological medicine plants or laboratories are not greatly different from general air purifiers, have no pertinence, and can not treat special pollutants; the patent No. 201810876588.5 discloses an air purification device for biological medicine, which effectively purifies air by arranging a filtering area and an air fan area and discharges the air through a pipeline, and because the arrangement of the pipeline causes the limitation of space arrangement, effective circulation cannot be formed indoors, and the indoor air cannot keep warm; the device can carry out drying process and sterilization process, can't purify the gas as required and carry out the opening and close of adaptability, increases the energy consumption.

Conventional sodium bicarbonate is very effective in neutralizing acidic substances, but it is difficult to achieve sufficient filtration performance in air filters where a large surface area contact is required due to its powdery consistency; the conventional method for removing acid by adding rare earth metal and organic metal catalyst into activated carbon not only reduces the effective filtering area of the activated carbon, but also generates toxic residues due to insufficient filtration; the conventional ammonia removal mode adopts the method of impregnating activated carbon with sulfuric acid or ZnCl₂Thereby achieving the neutralization of ammonia gas, because the active carbon is a porous reticular structure,the impregnation of a certain chemical cannot be followed by the addition of another chemical, resulting in a limited capacity for filtering the gas.

Disclosure of Invention

The invention aims to solve the technical problems and provides an intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet and a manufacturing method thereof, so that good indoor circulation performance is realized for emission and purification of special gas, and the intelligent energy-saving environment-friendly effect is achieved. In order to achieve the purpose, the technical scheme of the invention is as follows:

the intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet comprises a cabinet body, a first chemical filtering module, a fan frame and a second chemical filtering module, wherein the first chemical filtering module, the fan frame and the second chemical filtering module are sequentially arranged at the top of the cabinet body;

a fan which promotes the air in the cabinet body to enter the first chemical filtering module and discharge from the second chemical filtering module is arranged in the fan frame;

a plurality of carrying main mesh layers arranged at intervals are arranged in the first chemical filtering module, a reaction area for oxidizing non-thermal plasma of organic pollutants is arranged at the front end of the second chemical filtering module, and a carrying secondary mesh layer correspondingly matched with the non-thermal plasma is arranged in the second chemical filtering module;

the carrying main net layer and the carrying secondary net layer are both of porous structures with adhesive reactants or catalysts, the reactants in the carrying main net layer react with alkaline gas and acidic gas, and the catalysts in the carrying secondary net layer react with organic pollutants;

the air outlet of the cabinet body is provided with a gas sensor for detecting the type and concentration of gas, the fan is connected with a wind speed sensor for detecting the rotating speed of the fan, and the gas sensor and the wind speed sensor are connected to the central control unit; the motor driving the fan is connected with a PCB board connected to the central control unit.

Specifically, the carrying main net layer is made of porous foam or glass fiber.

Specifically, the main mesh layer includes a first mesh layer on which citric acid is mounted.

Specifically, the carrying main net layer further comprises a second net layer, and one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, calcium bicarbonate and calcium hydroxide are carried and adhered on the second net layer.

Specifically, the carrying secondary net layer is made of one or more of porous foam, a ceramic particle net, a ceramic raschig ring, alumina, activated carbon, carbon cloth and a carbon felt.

Specifically, the reaction region of the non-thermal plasma generates O₃An unstable gas; the secondary mesh layer comprises a third mesh layer, and MnO is adhered to the third mesh layer₂CuO, platinum or platinum oxide.

Specifically, the secondary mesh layer further includes a fourth mesh layer provided behind the third mesh layer, and a second catalyst for catalyzing the filtered gas of the third mesh layer is adhered to the fourth mesh layer.

Specifically, the cabinet body comprises an object placing plate, a front cabinet door and a back plate which are arranged on the front side and the back side of the object placing plate, and side plates arranged on the left side and the right side of the object placing plate; the front cabinet door is provided with a plurality of hinged folding transparent sheets, and the folding transparent sheet at the bottom layer is provided with an air inlet.

Specifically, the side edges of the fan frame and the supporting frame are provided with touch shells, a touch screen is installed in each touch shell, a central control unit is arranged in each touch shell, the touch screen is in control connection with the central control unit, the gas sensor sends detection data to the central control unit, and the type and concentration information of gas in the cabinet body is displayed in the touch screen; the wind speed sensor sends the detection data to the central control unit, and the information of the wind speed in the fan frame is displayed in the touch screen.

The manufacturing method of the intelligent energy-saving noise-reducing ductless negative-pressure air-purifying exhaust cabinet comprises the following steps:

1) forming a first net layer and a second net layer by adopting porous foam or glass fiber holes, and forming a third net layer and a fourth net layer by adopting any one of porous foam, a ceramic particle net, a ceramic raschig ring, alumina, activated carbon, carbon cloth and a carbon felt;

2) spraying glue, namely uniformly spraying thermosensitive glue on the first net layer to the fourth net layer;

3) naturally drying;

4) powder is scattered, acid reactant is scattered on the first net layer, and alkaline gas in the air is purified; spreading an alkaline reactant on the second net layer to purify acid gas in the air; catalysts are scattered on the third net layer and the fourth net layer to purify organic pollutants in the air;

5) the first net layer and the second net layer are erected in an aluminum alloy frame to form a first chemical filter module; the third net layer and the fourth net layer are erected in an aluminum alloy frame to form a second chemical filtering module;

6) the mounting front end of the second chemical filtering module is provided with a reaction area of non-thermal plasma, and unstable active gas is generated in the reaction area through two electrodes;

7) a fan for exhausting gas from the second chemical filtering module is arranged between the first chemical filtering module and the second chemical filtering module;

8) each chemical filtration module corner adopts EPDM to seal, installs to the cabinet body fixed.

Compared with the prior art, the intelligent energy-saving noise-reducing ductless negative-pressure air purification exhaust cabinet and the manufacturing method thereof have the beneficial effects that:

different net layers are arranged to carry reactants or catalysts, and purification is carried out aiming at specific target chemical substances, so that the method is suitable for different laboratory scenes; bonding the alkaline reactant with powdery consistency or the acid reactant with crystal with the mesh layer of the porous structure to obtain larger surface area contact, realizing full air purification and effectively removing ammonia gas and acid gas; the active carbon is loaded with a catalyst to effectively convert O generated in a non-thermal plasma reaction area₃And the byproducts of organic pollutants, improve the ability to purify the air; the cabinet body 1 is installed without a pipeline, indoor air circulation is effectively guaranteed, and the cabinet has green energy-saving performance and safe and reliable filtering and exhausting; the PCB adopts a sensorless vector driving system to control the motor, and has the characteristics of noise reduction and long service life; the gas sensor and the wind speed sensor in the cabinet body are connected to the central control unit, man-machine interaction is realized through the touch screen, and the gas in the cabinet body is accurately controlledThe requirement of emission is met, and the air is purified by intelligent control.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the partial cross-sectional structure of FIG. 1;

FIG. 3 is a schematic circuit diagram of the present embodiment;

the figures in the drawings represent:

the air conditioner comprises a cabinet body 1, an object placing plate 11, a front cabinet door 12, a back plate 13, a side plate 14, a folding transparent sheet 15, an air inlet 16, a supporting frame 2, a first chemical filtering module 3, a main net layer 31, a bearing frame 32, a sliding chute 33, a fan frame 4, a through hole 41, a second chemical filtering module 5, a secondary net layer 51, a fan 6, a motor 61, a supporting rod 7, a universal wheel 71, a touch control shell 8, a touch screen 81 and an air outlet 9.

Detailed Description

The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Example 1:

referring to fig. 1-3, the present embodiment is an intelligent energy-saving noise-reducing ductless negative-pressure clean air exhaust cabinet, which includes a cabinet body 1, a supporting frame 2 covering an opening at the top end of the cabinet body 1, a first chemical filtering module 3 disposed at the top of the supporting frame 2, a fan frame 4 disposed at the top of the first chemical filtering module 3, and a second chemical filtering module 5 disposed at the top of the fan frame 4; a fan 6 for promoting air to sequentially enter the first chemical filtering module 3 and be discharged from the second chemical filtering module 5 is arranged in the fan frame 4.

A plurality of carrying main net layers 31 arranged at intervals are arranged in the first chemical filter module 3; the carrying main net layer is of a porous structure and is specifically made of porous foam or glass fiber, and the porous foam is made of one or a mixture of polyurethane, polyethylene, silicone resin, rubber and polyvinyl chloride.

The main net layer 31 is provided with a first net layer, citric acid is adhered on the first net layer, and alkaline gas in the cabinet body is effectively removed; the porous foam is made of a material with tolerance, and a reactant is adhered to the porous foam for a target chemical substance, such as ammonia gas, so that the reactant contacts the air of the porous foam and effectively reacts with the target chemical substance in the air; the citric acid is attached to the first net layer through spraying the adhesive, and the citric acid crystals are small particles, so that the porous foam does not need to be put into a citric acid solution, and the consumption is lower by adopting a direct spraying mode, the drying is not needed, and a large amount of citric acid is allowed to be deposited on the porous foam.

The main carrying net layer 31 also comprises a second net layer, the second net layer is selected according to the property of air purification, can be arranged in front of or behind the first net layer, and carries one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, calcium bicarbonate and calcium hydroxide, so as to effectively remove acid gas in the cabinet body. The second net layer fixes one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, calcium bicarbonate and calcium hydroxide through an adhesive, and the modified porous foam or glass fiber has high acid resistance and alkali resistance, so that air can easily pass through the second net layer, and the aim of efficiently neutralizing acid or alkali gas is fulfilled.

The front end of the second chemical filtering module generates a reaction area of non-thermal plasma for oxidizing organic pollutants in the cabinet body, and the non-thermal plasma generates O, O through discharge between two electrodes₃The OH & unstable gas is 10000-30000V, 50-2000HZ, and the pulse time is 20ns to generate non-thermal plasma.

A plurality of carrying sub-net layers 51 arranged at intervals are arranged in the second chemical filtering module 5; the carrying secondary net layer 51 is of a porous structure and is specifically made of one or more of porous foam, a ceramic particle net, a ceramic raschig ring, alumina, activated carbon, carbon cloth and a carbon felt;

the secondary mesh layer 51 mounted in the present embodiment specifically includes a third mesh layer on which MnO is adhered₂First catalyst of CuO, platinum or platinum oxide, first catalyst and O₃Reacting, converting the organic pollutants and the organic pollutant byproducts again to generate small molecule product packagesComprises CO and CO₂And H₂O；

The secondary mesh 51 further includes a fourth mesh disposed behind the third mesh, the fourth mesh being loaded with a second catalyst for catalyzing the gas filtered by the third mesh, and CuO serving as the second catalyst for converting CO into CO₂And (5) discharging.

According to the requirement of purifying the environment, the carrying secondary net layer also comprises a fifth net layer, the fifth net layer is made of polytetrafluoroethylene materials, and the gaps of the fifth net layer can filter 0.12-0.3 mu m particles, so that the air purification and filtration are realized.

The cabinet body 1 comprises a storage plate 11, a front cabinet door 12 and a back plate 13 which are arranged on the front and back sides of the storage plate 11, and side plates 14 arranged on the left and right sides of the storage plate; a plurality of folding transparent sheets 15 connected by hinges are arranged on the front cabinet door 12; the folding transparent sheet 15 at the bottom layer is provided with an air inlet 16. The chemical or reaction vessel is stored on the storage plate 11, and the generated polluted gas rises and is discharged by the fan 6.

The first chemical filter module 3 comprises a bearing frame 32, and a plurality of carrying main mesh layers 31 which are stacked at intervals are arranged in the bearing frame 32. The bearing frame 32 is a frame body made of an aluminum alloy material.

The opposite sides of the supporting frame 2 and the fan frame 4 are provided with sliding grooves 33 correspondingly matched with the bearing frame 32, and the bearing frame 32 can be drawn out or pushed in from the side between the supporting frame and the fan frame, so that the main net layer 31 can be conveniently replaced or maintained.

Supporting rods 7 are respectively arranged at the corners around the bottom of the cabinet body 1, and universal wheels 71 are installed at the bottoms of the supporting rods 7.

The side edges of the fan frame 4 and the supporting frame 2 are provided with a touch casing 8, and a touch screen 81 is installed in the touch casing 8. A central control unit (not shown) is disposed in the touch housing 8, and the touch screen 81 is connected to the central control unit.

The air outlet 9 of the cabinet body 1 is provided with a gas sensor 9 for detecting the type and concentration of gas, the gas sensor 9 sends detection data to the central control unit, and the type and concentration information of the gas in the cabinet body 1 is displayed in the touch screen 81. The air outlet 9 is an exhaust end face of the second chemical filtering module 5.

The fan frame 4 separates the first chemical filter module 3 and the second chemical filter module 5 into two spaces, a through hole 41 is formed in the fan frame 4, a fan 6 is arranged in the through hole 41, and the fan 6 is connected with a motor 61 for driving the fan to rotate. The fan 6 is connected with an air speed sensor (not marked in the figure) for detecting the rotating speed of the fan, the air speed sensor sends detection data to the central control unit, and information of the air speed in the fan frame 4 is displayed in the touch screen 81.

The motor 61 is connected with a PCB board connected into the circuit, the PCB board is connected with the central control unit, and the PCB board is internally provided with a central energy storage unit, a rectifying unit, an inverting unit and a filtering unit which are matched with each other in a cooperative manner.

The PCB adopts a non-sensing vector driving system to control the motor, so that the energy-saving application is effectively achieved, the central control unit controls the fan 6 to constantly exhaust air speed according to the feedback information of the air speed sensor, the noise is as low as 55dB and is far lower than the national standard 65 Db; the service life of the motor is prolonged by more than 5 ten thousand hours, which is far beyond the national standard of 1.2 ten thousand hours.

Example 2:

the manufacturing method of the intelligent energy-saving noise-reducing ductless negative-pressure air-purifying exhaust cabinet comprises the following steps:

1) forming a first net layer and a second net layer by adopting porous foam or glass fiber holes, and forming a third net layer and a fourth net layer by adopting any one of porous foam, a ceramic particle net, a ceramic raschig ring, alumina, activated carbon, carbon cloth and a carbon felt;

2) spraying glue, namely uniformly spraying thermosensitive glue on the first net layer to the fourth net layer;

3) naturally drying;

4) powder is scattered, acid reactant is scattered on the first net layer, and alkaline gas in the air is purified; spreading an alkaline reactant on the second net layer to purify acid gas in the air; catalysts are scattered on the third net layer and the fourth net layer to purify organic pollutants in the air;

5) the first net layer and the second net layer are erected in an aluminum alloy frame to form a first chemical filter module; the third net layer and the fourth net layer are erected in an aluminum alloy frame to form a second chemical filtering module;

6) the mounting front end of the second chemical filtering module is provided with a reaction area of non-thermal plasma, and unstable active gas is generated in the reaction area through two electrodes;

7) a fan for exhausting gas from the second chemical filtering module is arranged between the first chemical filtering module and the second chemical filtering module;

8) each chemical filtration module corner adopts EPDM to seal, installs to the cabinet body fixed.

When the embodiment is applied, different net layers are arranged to carry reactants or catalysts, and the purification is carried out aiming at specific target chemical substances, so that the method is suitable for different laboratory scenes; bonding the alkaline reactant with powdery consistency or the acid reactant with crystal with the mesh layer of the porous structure to obtain larger surface area contact, realizing full air purification and effectively removing ammonia gas and acid gas; the active carbon is loaded with a catalyst to effectively convert O generated in a non-thermal plasma reaction area₃And the byproducts of organic pollutants, improve the ability to purify the air; the cabinet body 1 is installed without a pipeline, indoor air circulation is effectively guaranteed, and the cabinet has green energy-saving performance and safe and reliable filtering and exhausting; the PCB adopts a sensorless vector driving system to control the motor, and has the characteristics of noise reduction and long service life; the air sensor 9 and the air speed sensor in the cabinet body 1 are connected into the central control unit, man-machine interaction is achieved through the touch screen 81, the air emission requirement in the cabinet body 1 is accurately controlled, and intelligent control air purification is achieved.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.