Oil fume purification system and purification method thereof

Abstract

The present invention discloses an oil fume purification system and a purification method thereof, which relate to the field of oil fume treatment equipment, comprising: a water filtration unit, a water removal unit, an electrostatic adsorption unit and a gas treatment unit which are sequentially arranged on an oil fume exhaust pipe, the water filtration unit comprising a high-pressure cleaner, a cleaning water discharge port for discharging cleaning water being provided at the bottom of the high-pressure cleaner, the water removal unit comprising a cooler, the air outlet of the high-pressure cleaner being communicated with the air inlet of the cooler, and the air outlet of the cooler being communicated with the air inlet of the electrostatic adsorption unit; in the present invention, a high-pressure cleaner is arranged before the electrostatic adsorption unit to eliminate open flames and reduce the temperature of the oil fume, and a cooler is arranged to condense moisture in the air and reduce the temperature of the oil fume, so that the oil fume reaching the electrostatic adsorption unit is in a state of low temperature and dryness, thereby avoiding fire in the electrostatic adsorption unit and improving the safety of the device, and the high-pressure cleaner can achieve a better oil fume purification effect in cooperation with the electrostatic adsorption unit.

Description

Technical Field

[0001] The present invention relates to the field of oil fume treatment equipment, and in particular to an oil fume purification system and a purification method thereof. Background Art

[0002] With the continuous growth of my country's economy and the continuous improvement and enhancement of people's living standards, kitchen range hoods have become a necessity in people's lives. However, due to the short development time of range hoods in my country, the products on the existing market mainly focus on smoke exhaust, and rarely consider energy saving and environmental protection. The exhaust smoke from people's daily life and cooking causes serious pollution to the outdoor environment. For example, the invention patent with application number "200510032489.1" and name "Ranger Hood" discloses a range hood that mainly relies on the rotation of a fan to extract indoor oil smoke and discharge it into the external environment. Although it can ensure the health of the indoor environment, it will seriously pollute the outdoor environment.

[0003] The invention patent with application number "202010081954.5" and name "An Electrostatic Oil Fume Purifier" discloses an oil fume purifier, which uses the principle of electrostatic adsorption to adsorb particulate matter in the oil fume to prevent it from being directly discharged into the external environment, effectively improving the protection of the external environment. However, the temperature of the oil fume is relatively high and contains water vapor inside. The electrostatic adsorption directly receives the oil fume from the stove. The ambient temperature at the electrostatic adsorption site is high and relatively humid, which can easily cause a fire at the electrostatic adsorption site. Moreover, in the process of extracting oil fume from the front range hood hood, it is inevitable that tiny open flames will be sucked into the electrostatic adsorption site, and the electrostatic adsorption site will adsorb oil mist particles. The adsorbed oil mist particles are at risk of burning after contacting open flames.

[0004] Therefore, people are in urgent need of an oil fume purification system with good purification effect and high safety. Summary of the Invention

[0005] The purpose of the present invention is to provide an oil fume purification system and a purification method thereof to solve the problems existing in the above-mentioned prior art. A high-pressure cleaner is arranged before the electrostatic adsorption unit to eliminate open flames and reduce the oil fume temperature. A cooler is arranged to condense moisture in the air and reduce the oil fume temperature, so that the oil fume reaching the electrostatic adsorption unit is in a low temperature and dry state, thereby avoiding the electrostatic adsorption unit from catching fire and improving the safety of the device. In addition, the high-pressure cleaner will also remove some particles in the oil fume, and cooperate with the electrostatic adsorption unit to achieve a better oil fume purification effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides an oil fume purification system, comprising a water filtration unit, a water removal unit, an electrostatic adsorption unit and a gas treatment unit which are sequentially arranged on an oil fume exhaust pipe, the water filtration unit comprising a high-pressure cleaner for spraying high-pressure water to eliminate open flames and reduce the temperature of the oil fume, a washing water discharge port for discharging washing water is provided at the bottom of the high-pressure cleaner, the water removal unit comprising a cooler for condensing moisture in the air and reducing the temperature of the oil fume, the air outlet of the high-pressure cleaner is connected to the air inlet of the cooler, and the air outlet of the cooler is connected to the air inlet of the electrostatic adsorption unit.

[0007] Preferably, the nozzle for spraying water in the high-pressure cleaner is located above the inner cavity of the high-pressure cleaner, and the water spraying direction is perpendicular to the air flow direction.

[0008] Preferably, the water removal unit also includes a compression filtering structure, which includes an air compressor for collecting and compressing oil smoke and a compressed air filter, the air inlet of the air compressor is connected to the air outlet of the high-pressure cleaner, the air outlet of the air compressor is connected to the air inlet of the compressed air filter, and the air outlet of the compressed air filter is connected to the air inlet of the cooler.

[0009] Preferably, the water filtration unit further comprises a centrifugal filter for removing solid particles in oil smoke, and an air outlet of the centrifugal filter is communicated with an air inlet of the high-pressure cleaner.

[0010] Preferably, the electrostatic adsorption unit is an electrostatic adsorber that utilizes the electrostatic adsorption principle to remove solid particles in oil smoke, the air inlet of the electrostatic adsorber is connected to the air outlet of the water removal unit, and the air outlet of the electrostatic adsorber is connected to the air inlet of the gas processing unit.

[0011] Preferably, the gas processing unit includes a UV laser sterilizer or a UV photo-oxidation catalyst, and the air inlet of the UV laser sterilizer or the UV photo-oxidation catalyst is communicated with the air outlet of the electrostatic adsorption unit.

[0012] Preferably, the gas processing unit further comprises an activated carbon adsorption layer, and the activated carbon adsorption layer is arranged in the oil fume exhaust duct behind the UV laser sterilizer or the UV photo-oxidation catalyst.

[0013] Preferably, the fume exhaust duct is provided with an oil fume hood for collecting stove oil fume and an induced draft fan for providing wind force, the oil fume hood is arranged above the stove, and the induced draft fan is arranged between the oil fume hood and the water filter unit.

[0014] The present invention also provides a purification method for an oil fume purification system, comprising the following steps:

[0015] S1: In the extraction stage, the induced draft fan starts to generate draft force and form negative pressure at the air inlet of the fume hood, which draws the fume into the fume exhaust duct through the fume hood.

[0016] S2: Water filtration stage: The oil smoke enters the centrifugal filter. As the centrifugal filter rotates, large particles of impurities in the oil smoke are separated. After the large particles are separated, the oil smoke enters the high-pressure cleaner. The water is used to clean the oil smoke, further separating the solid particles in the oil smoke, reducing the temperature of the oil smoke and eliminating the presence of open flames.

[0017] S3: Water removal stage: After the water filtration stage, the oil smoke enters the air compressor and is compressed and discharged to the compressed air filter to remove impurities, oil and mist droplets in the oil smoke. The oil smoke then enters the cooler, where the gaseous water molecules in the oil smoke are condensed and removed;

[0018] S4: Electrostatic adsorption stage, the oil smoke enters the electrostatic adsorber, and the remaining solid particles in the oil smoke are adsorbed and removed;

[0019] S5: In the gas treatment stage, the oil smoke after the solid particles are removed enters the UV laser disinfector for disinfection or enters the UV photocatalyst for disinfection and deodorization, and then passes through the activated carbon adsorption layer to further remove its odor before being discharged into the external environment.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] 1. In the present invention, the oil fume passes through a high-pressure washer and a cooler before entering the electrostatic adsorption unit. The high-pressure water sprayed in the high-pressure washer can not only remove a part of the particulate matter in the oil fume, but also effectively reduce the temperature of the oil fume and eliminate open flames. The cooler condenses the moisture in the oil fume containing more moisture after passing through the high-pressure washer, and further reduces the temperature of the oil fume, ensuring that the oil fume reaching the electrostatic adsorption unit is in a low temperature and dry state, avoiding the problem that the charged structure in the electrostatic adsorption unit is prone to fire in a high temperature and humid environment, greatly improving safety, and both the high-pressure washer and the electrostatic adsorption unit can remove particulate matter in the oil fume, thereby improving the purification effect of the oil fume.

[0022] 2. The setting of the compression filter structure in the present invention can cooperate with the cooler to better remove moisture from the oil smoke and improve the effect of water removal.

[0023] 3. The centrifugal filter of the present invention can use centrifugal force to remove some solid particles in the oil smoke. In combination with the high-pressure cleaner and the electrostatic adsorption unit, it can improve the removal effect of the particles in the oil smoke, that is, improve the purification effect of the device.

[0024] 4. The gas treatment unit of the present invention can achieve the disinfection and deodorization of oil smoke, thereby improving the protection effect on the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 Schematic diagram of the structure of the oil fume purification system of the present invention;

[0027] Among them, 1. Fume hood; 2. Fume exhaust duct; 3. induced draft fan; 4. Centrifugal filter; 5. High-pressure cleaner; 6. Air compressor; 7. Compressed air filter; 8. Cooler; 9. Electrostatic adsorber; 10. UV laser sterilizer; 11. Activated carbon adsorption layer. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide an oil fume purification system and a purification method thereof to solve the problems existing in the prior art. A high-pressure cleaner is arranged before the electrostatic adsorption unit to eliminate open flames and reduce the oil fume temperature. A cooler is arranged to condense moisture in the air and reduce the oil fume temperature, so that the oil fume reaching the electrostatic adsorption unit is in a low temperature and dry state, thereby avoiding the electrostatic adsorption unit from catching fire and improving the safety of the device. In addition, the high-pressure cleaner will also remove some particles in the oil fume, and can achieve better oil fume purification effect in combination with the electrostatic adsorption unit.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Please refer to Figure 1As shown, an oil fume purification system is provided, including a water filtration unit, a water removal unit, an electrostatic adsorption unit and a gas treatment unit. Along the exhaust direction of the oil fume exhaust pipe 2, the water filtration unit, the water removal unit, the electrostatic adsorption unit and the gas treatment unit are arranged in sequence. The water filtration unit includes a high-pressure cleaner 5, which sprays high-pressure water toward the oil fume to eliminate open flames and reduce the temperature of the oil fume. The spraying area of ​​the high-pressure water covers the entire oil fume exhaust pipe 2 to ensure the treatment effect of the oil fume. A cleaning water discharge port is provided at the bottom of the high-pressure cleaner 5 so that the cleaning water can be discharged quickly. The water removal unit includes a cooler 8, which can condense moisture in the air and reduce the temperature of the oil fume. A condensed water discharge port for discharging condensed water is provided at the bottom of the cooler 8. The air outlet of the high-pressure cleaner 5 is connected to the cooler 8. The air inlet of the cooler 8 is connected, and the air outlet of the cooler 8 is connected to the air inlet of the electrostatic adsorption unit. Before the oil fume enters the electrostatic adsorption unit, it first passes through the high-pressure cleaner 5 and the cooler 8. The high-pressure water sprayed in the high-pressure cleaner 5 can not only remove part of the particulate matter in the oil fume, but also effectively reduce the temperature of the oil fume and eliminate open flames. The cooler 8 condenses the moisture in the oil fume containing more moisture after passing through the high-pressure cleaner 5, and further reduces the temperature of the oil fume, ensuring that the oil fume reaching the electrostatic adsorption unit is in a low temperature and dry state, avoiding the problem that the charged structure in the electrostatic adsorption unit is prone to fire in a high temperature and humid environment, greatly improving safety, and both the high-pressure cleaner 5 and the electrostatic adsorption unit can remove particulate matter in the oil fume, thereby improving the purification effect of the oil fume.

[0032] The nozzle for spraying water in the high-pressure cleaner 5 is located above the inner cavity of the high-pressure cleaner 5, and the water spraying direction is perpendicular to the air flow direction to form a water curtain.

[0033] The water removal unit also includes a compression filtering structure, which includes an air compressor 6 and a compressed air filter 7 for collecting and compressing oil smoke. The air inlet of the air compressor 6 is connected to the air outlet of the high-pressure cleaner 5, and the air outlet of the air compressor 6 is connected to the air inlet of the compressed air filter 7. The air outlet of the compressed air filter 7 is connected to the air inlet of the cooler 8. The compression filtering structure can cooperate with the cooler 8 to better remove moisture from the oil smoke and improve the water removal effect. Moreover, the compressed air filter 7 can intercept solid particulate matter while intercepting water droplets, thereby improving the treatment effect of oil smoke. A filter discharge port is provided at the bottom of the compression filter.

[0034] The water filtration unit also includes a centrifugal filter 4 for removing solid particles in the oil fume. The air outlet of the centrifugal filter 4 is connected to the air inlet of the high-pressure cleaner 5. The centrifugal filter 4 can use the centrifugal filtration principle to remove some solid particles in the oil fume. In conjunction with the high-pressure cleaner 5 and the electrostatic adsorption unit, the removal effect of the particles in the oil fume is improved, that is, the purification effect of the device is improved. The material of the suspension in the centrifugal filter 4 is quicklime and polypropylene powder, and a centrifugal discharge port is provided at the bottom of the centrifugal filter 4.

[0035] The electrostatic adsorption unit is an electrostatic adsorber 9 that utilizes the electrostatic adsorption principle to remove solid particles in oil smoke. The air inlet of the electrostatic adsorber 9 is connected to the air outlet of the water removal unit, and the air outlet of the electrostatic adsorber 9 is connected to the air inlet of the gas treatment unit. An adsorbent discharge port is provided at the bottom of the electrostatic adsorber 9.

[0036] The gas treatment unit includes a UV laser sterilizer 10 or a UV photo-oxidation catalyst. The air inlet of the UV laser sterilizer 10 or the UV photo-oxidation catalyst is connected to the air outlet of the electrostatic adsorption unit. The UV laser sterilizer 10 can disinfect the oil fume, and the UV photo-oxidation catalyst can disinfect the oil fume while removing the odor of the oil fume. The two can be selected according to needs. The gas treatment unit can disinfect the oil fume (when the UV photo-oxidation catalyst is selected, disinfection and deodorization can be achieved), thereby improving the protection effect on the external environment.

[0037] The gas treatment unit also includes an activated carbon adsorption layer 11, which is arranged in the oil fume exhaust duct 2 behind the UV laser disinfector 10 or the UV photooxidation catalyst. The activated carbon adsorption layer 11 is used to further absorb the odor in the oil fume. When the UV photooxidation catalyst is selected, the activated carbon adsorption layer 11 can cooperate with the UV photooxidation catalyst to achieve a better deodorization effect, that is, by setting the activated carbon adsorption layer 11 and the UV laser disinfector 10 or the UV photooxidation catalyst, the discharged oil fume is colorless and odorless, thereby improving the environmental protection effect.

[0038] The fume exhaust duct 2 is provided with an oil fume hood 1 for collecting stove oil fume and an induced draft fan 3 for providing wind force. The oil fume hood 1 is arranged above the stove, and the induced draft fan 3 is arranged between the oil fume hood 1 and the water filter unit. The induced draft fan 3 is arranged behind the oil fume hood 1, so that the stove below the oil fume hood 1 can be directly extracted to provide a better oil fume extraction effect.

[0039] The cleaning water discharge port, condensed water discharge port and filtered material discharge port can be connected to a water recovery device to recycle and process the water to achieve the reuse of water resources.

[0040] The present invention also provides a purification method for an oil fume purification system, comprising the following steps:

[0041] S1: In the extraction stage, the induced draft fan 3 is started to generate a draft force and form a negative pressure at the air inlet of the fume hood 1, which draws the fume through the fume hood 1 and into the fume exhaust duct 2;

[0042] S2: Water filtration stage: The oil smoke enters the centrifugal filter 4. As the centrifugal filter 4 rotates, large particles of impurities in the oil smoke are separated. The oil smoke after the large particles of impurities are separated enters the high-pressure cleaner 5. The water is used to clean the oil smoke, further separating the solid particles in the oil smoke, reducing the temperature of the oil smoke and eliminating the presence of open flames.

[0043] S3: Water removal stage: After the water filtration stage, the oil smoke enters the air compressor 6 and is compressed and discharged to the compressed air filter 7 to remove impurities, oil and mist droplets in the oil smoke. The oil smoke then enters the cooler 8, where the gaseous water molecules in the oil smoke are condensed and removed;

[0044] S4: electrostatic adsorption stage, the oil smoke enters the electrostatic adsorber 9, and the remaining solid particles in the oil smoke are adsorbed and removed by the electrostatic adsorption principle;

[0045] S5: In the gas treatment stage, the oil smoke after the solid particles are removed enters the UV laser disinfector 10 for disinfection or enters the UV photocatalyst for disinfection and deodorization, and then passes through the activated carbon adsorption layer 11 to further remove its odor before being discharged into the external environment.

[0046] Adaptive changes based on actual needs are all within the scope of protection of the present invention.

[0047] It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0048] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A fume purification system, characterized in that: The system comprises a water filter unit, a water removal unit, an electrostatic adsorption unit, and a gas treatment unit, which are sequentially arranged on the oil fume exhaust pipe. The water filter unit includes a high-pressure washer for spraying high-pressure water to eliminate open flames and reduce the temperature of the oil fume. The bottom of the high-pressure washer is provided with a washing water discharge port for discharging washing water. The water removal unit includes a cooler for condensing moisture in the air and reducing the temperature of the oil fume. The air outlet of the high-pressure washer is connected to the air inlet of the cooler, and the air outlet of the cooler is connected to the air inlet of the electrostatic adsorption unit. The water removal unit further includes a compression filtering structure, which includes an air compressor for collecting and compressing oil smoke and a compressed air filter, the air inlet of the air compressor is connected to the air outlet of the high-pressure cleaner, the air outlet of the air compressor is connected to the air inlet of the compressed air filter, the air outlet of the compressed air filter is connected to the air inlet of the cooler, and a filter outlet is provided at the bottom of the compression filter; The water filtration unit further comprises a centrifugal filter for removing solid particles in oil smoke, an air outlet of the centrifugal filter is connected to an air inlet of the high-pressure cleaner, and a centrifugal discharge port is provided at the bottom of the centrifugal filter.

2. The oil fume purification system according to claim 1, characterized in that: The nozzle for spraying water in the high-pressure cleaner is located above the inner cavity of the high-pressure cleaner, and the water spraying direction is perpendicular to the air flow direction.

3. The oil fume purification system according to claim 1, characterized in that: The electrostatic adsorption unit is an electrostatic adsorber that uses the electrostatic adsorption principle to remove solid particles in oil smoke. The air inlet of the electrostatic adsorber is connected to the air outlet of the water removal unit, and the air outlet of the electrostatic adsorber is connected to the air inlet of the gas treatment unit.

4. The oil fume purification system according to claim 1, characterized in that: The gas processing unit includes a UV laser sterilizer or a UV photo-oxidation catalyst, and the air inlet of the UV laser sterilizer or the UV photo-oxidation catalyst is communicated with the air outlet of the electrostatic adsorption unit.

5. The oil fume purification system according to claim 4, characterized in that: The gas processing unit further comprises an activated carbon adsorption layer, which is arranged in the oil fume exhaust duct behind the UV laser sterilizer or the UV photo-oxidation catalyst.

6. The oil fume purification system according to claim 1, characterized in that: The fume exhaust duct is provided with an oil fume hood for collecting stove oil fume and an induced draft fan for providing wind force. The oil fume hood is arranged above the stove, and the induced draft fan is arranged between the oil fume hood and the water filter unit.

7. A purification method for an oil fume purification system, characterized in that: The following steps are involved: S1: In the extraction stage, the induced draft fan starts to generate draft force and form negative pressure at the air inlet of the fume hood, which draws the fume into the fume exhaust duct through the fume hood. S2: Water filtration stage: The oil smoke enters the centrifugal filter. As the centrifugal filter rotates, large particles of impurities in the oil smoke are separated. After the large particles are separated, the oil smoke enters the high-pressure cleaner. The water is used to clean the oil smoke, further separating the solid particles in the oil smoke, reducing the temperature of the oil smoke and eliminating the presence of open flames. S3: Water removal stage: After the water filtration stage, the oil smoke enters the air compressor and is compressed and discharged to the compressed air filter to remove impurities, oil and mist droplets in the oil smoke. The oil smoke then enters the cooler, where the gaseous water molecules in the oil smoke are condensed and removed; S4: Electrostatic adsorption stage, the oil smoke enters the electrostatic adsorber, and the remaining solid particles in the oil smoke are adsorbed and removed; S5: In the gas treatment stage, the oil smoke after the solid particles are removed enters the UV laser disinfector for disinfection or enters the UV photocatalyst for disinfection and deodorization, and then passes through the activated carbon adsorption layer to further remove its odor before being discharged into the external environment.

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