Electrostatic photolysis composite fume hood purification integrated equipment and fume purification method

Abstract

The present invention discloses an electrostatic photolysis composite fume hood purification integrated equipment and a fume purification method, the equipment includes a fume hood, a photolysis purification chamber and an electrostatic purification chamber, the fume hood is provided with a fan for extracting fume, the electrostatic purification chamber includes a first box body, a plurality of electrode plate assemblies are stacked in a vertical direction and arranged at a certain distance in the first box body, the electrode plate assembly includes a positive plate layer and a negative plate layer, and an insulating isolation layer for isolating the positive plate layer from the negative plate layer, the positive plate layer and the negative plate layer of two adjacent electrode plate assemblies are arranged oppositely, and the positive plate layer is located at the bottom of the negative plate layer; each electrode plate assembly is also provided with a plurality of through-hole structures, and the through-hole structures of each layer are arranged along a coaxial line. The fume purification of the present invention has better effect and large processing capacity, and is particularly suitable for fume removal in commercial occasions.

Description

Technical Field

[0001] The invention belongs to the technical field of oil fume purification equipment, and in particular relates to an electrostatic photolysis composite fume hood purification integrated equipment and an oil fume purification method. Background Art

[0002] The purification of kitchen fume has always been a key area of ​​environmental protection. If the fume is not completely treated and discharged into the atmosphere, it will cause serious environmental pollution. At present, the conventional methods for the purification of fume include centrifugal separation, high-voltage electrostatic deposition, liquid washing, and filtration adsorption, etc., all of which have different degrees of purification effects on fume.

[0003] The public document Chinese invention patent CN201811413989 discloses a kitchen electrostatic purification range hood, including a fume electrostatic purification device and a range hood housing, to which a mounting bracket is fixedly connected. By installing a fan in the range hood housing, air flows through a pre-filter, an electrostatic fume purification device, a catalyst adsorption layer and an activated carbon layer in sequence along a channel in the range hood housing, and is then discharged from an exhaust pipe, thereby improving the purification effect on the fume. The electrostatic fume purification device generates a corona phenomenon for small particles of fume in the air, so that the fume particles are finally adsorbed on the surface of the grounding electrode plate and collected in an oil box after spraying. Compared with existing range hoods, the fume purification effect is better.

[0004] From its structure, we can see that it is a household oil fume purifier. Since the amount of oil fume in a household oil fume purifier is relatively small, the fan power and other purification components are arranged in a relatively compact structure, the wind resistance is relatively large, and the oil fume treatment capacity is generally not too large. If it is used in canteens, hotels and other occasions with large amounts of kitchen oil fume, the oil fume purification capacity is difficult to meet the needs.

[0005] Specifically, firstly, the oil fume sucked in by the fan passes through the oil fume purification treatment channel in a narrow space, where an oil fume electrostatic purification device, a spray pipe and a catalyst adsorption layer are arranged. The oil fume can only rise into the catalyst adsorption layer after passing through the oil fume electrostatic purification device. The space is small, resulting in a small oil fume flow rate; secondly, the positive electrode plate and the grounding plate are distributed vertically, that is to say, the oil fume particles will move laterally under the action of the electric field, and then gather on the grounding plate, and the spray pipe sprays at the same time. Experiments have shown that when this structure is actually applied, it is difficult to ensure that the oil fume particles gather on the grounding plate according to the assumed parabolic motion. There are wind resistance and gravity, which makes the oil fume removal effect very poor; and the real-time working mode of the spray pipe causes the range hood to continuously need cleaning fluid, and at the same time, it also continuously generates cleaning waste liquid, resulting in the need for additional water supply and then recycling of waste water. This arrangement is not suitable for home use. Summary of the invention

[0006] The purpose of the present invention is to provide an electrostatic photolysis composite fume hood purification integrated equipment and an oil fume purification method to address the problems in the prior art that the oil fume purification effect is poor, the oil fume purification volume is small and is not suitable for commercial use, and the structure is complex and is not suitable for home use. The equipment has good oil fume purification effect and large purification volume, and is suitable for multi-purpose oil fume purification treatment such as home and commercial use.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] An electrostatic photolysis composite fume hood purification integrated device comprises a fume hood, a photolysis purification chamber and an electrostatic purification chamber, wherein a fan for extracting cooking fumes is arranged in the fume hood, and the electrostatic purification chamber comprises a first box body, wherein a plurality of electrode plate assemblies are stacked in a vertical direction and arranged at a certain distance in the first box body, wherein the electrode plate assemblies comprise a positive electrode plate layer and a negative electrode plate layer, and an insulating isolation layer for isolating the positive electrode plate layer from the negative electrode plate layer, wherein the positive electrode plate layer and the negative electrode plate layer of two adjacent electrode plate assemblies are arranged opposite to each other, and the positive electrode plate layer is located below the negative electrode plate layer;

[0009] Each electrode plate assembly is also provided with a plurality of through-hole structures, and the through-hole structures of each layer are arranged along a coaxial line.

[0010] Optionally, a spray mechanism is provided on the top of the first box;

[0011] In the electrode plate assembly, a certain number of electrode plate assemblies are connected with a translation mechanism for moving the electrode plate assembly so that the through holes of the moved electrode plate assembly are staggered with the through holes of other electrode plate assemblies.

[0012] Optionally, the translation mechanism includes a movable frame connected to the outer side wall of the first box body, the movable frame is connected to the end of the electrode plate assembly, and an elastic cover plate is provided on the first box body to cover the connection hole between the movable frame and the electrode plate assembly.

[0013] Optionally, the photolysis purification chamber includes a second box body, in which a cleaning assembly and an ultraviolet lamp assembly are arranged at intervals, and the cleaning assembly and the ultraviolet lamp assembly are arranged in the second box body using a detachable connection structure that can be moved in a vertical direction.

[0014] Optionally, the movable and detachable connection structure includes a first support frame, a second support frame, an outer sealing gasket and an inner sealing gasket, the first support frame is located inside the second box, the second support frame is located outside the second box, the inner sealing gasket is arranged at the bottom of the first support frame, the outer sealing gasket is arranged at the top of the second support frame, and a plurality of groups of spray machine assemblies or ultraviolet lamp assemblies are arranged between the first support frame and the second support frame, and the inner sealing gasket and the outer sealing gasket are both larger than the through hole of the spray machine assembly or the ultraviolet lamp assembly on the second box;

[0015] The movable and detachable connection structure also includes a locking assembly, which includes a hook fixed to the second box body. The end of the second support frame is provided with a foldable and extendable extension portion, and the extension portion can be extended deep into the hook to fix the second support frame.

[0016] Optionally, the extension portion is connected to the second support frame by using an elastic hinge.

[0017] Optionally, the tops of the outer sealing gasket and the inner sealing gasket both adopt an arc surface structure, and a liquid collecting nozzle is arranged between the adjacent cleaning components and the ultraviolet lamp components.

[0018] Optionally, both the photolysis purification chamber and the electrostatic purification chamber are provided with a guide plate at the inlet end, the guide plate adopts a trumpet-shaped structure, and a plurality of ventilation holes are opened on the guide plate.

[0019] A method for purifying oil fume using the electrostatic photolysis composite fume hood purification integrated device comprises the following steps:

[0020] The fume hood collects the fumes;

[0021] The oil smoke collected by the smoke hood is passed into the photolysis purification chamber, and the oil smoke is purified by the UV photolysis reaction principle;

[0022] The oil fume purified in the photolysis purification chamber is then passed into the electrostatic purification chamber. In the electrostatic purification chamber, through the gaps of the stacked electrode plate assemblies, when the electrode plate assemblies are energized, the oil fume particles in the oil fume are gathered in a parabolic state on the positive plate below under the action of gravity and the electric field. When the gathering amount exceeds a certain value, it flows from the through-hole structure to the bottom of the first box body and is collected.

[0023] Optionally, the method further comprises the following steps:

[0024] Move the translation mechanism so that some electrode plate assemblies in the electrode plate assembly are staggered with the through-hole structures of other electrode plate assemblies, start the spray mechanism, spray cleaning liquid from the top to clean the top electrode plate assembly, and the cleaning liquid falls from the top electrode plate assembly through the through-hole structure into the next-level electrode plate assembly in turn to clean the next-level electrode plate assembly.

[0025] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. By setting up a photolysis purification room and an electrostatic purification room, photolysis purification can be combined with high-voltage electrostatic purification, and has dual oil fume purification capabilities;

[0027] 2. The positive electrode plate and the negative electrode plate are arranged in a horizontal stack, and the positive electrode plate is located at the bottom. When the oil smoke passes through the electrode plate assembly, the oil smoke particles will fall in a parabolic shape under the action of the electric field, and then gather on the positive electrode plate. At the same time, with the action of gravity, the superposition of gravity and electric field force, more oil smoke particles are separated from the oil smoke. Compared with the vertical arrangement of the prior art, the oil smoke purification ability is stronger;

[0028] Furthermore, the electrode plate assembly has a through-hole structure, and the separated oil will fall along the through-hole structure. Since the through-hole structure is coaxial, the oil will directly fall to the bottom of the box when falling, and will not fall onto the electrode plate assembly of the next level, thereby reducing the adhesion of oil particles and not causing a significant impact on the electric field strength of the electrode plate assembly;

[0029] 3. It uses separate photolysis purification room and electrostatic purification room, which have large space and large oil fume treatment capacity, and is especially suitable for use in large oil fume treatment occasions such as school canteens, hotel kitchens, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view of the electrostatic photolysis composite fume hood purification integrated device of the present invention;

[0031] Figure 2 It is a partial cross-sectional view of the front view of the photolysis purification chamber and the electrostatic purification chamber of the present invention;

[0032] Figure 3 yes Figure 2 A magnified view of part e;

[0033] Figure 4 is a partial cross-sectional side view of the photolysis purification chamber of the present invention;

[0034] Figure 5 is a partial cross-sectional side view of the photolysis purification chamber of the present invention in another use state;

[0035] Figure 6 It is a partial cross-sectional view of the electrostatic purification chamber of the present invention in another use state.

[0036] Figure markings: 100-smoke hood, 200-photolysis purification chamber, 300-electrostatic purification chamber, 210, 330-liquid collection nozzle, 220-movable and detachable connection structure, 222-first support frame, 223-inner sealing gasket, 224-outer sealing gasket, 225-second support frame, 226-extension part, 227-hook, 230-ultraviolet lamp assembly, 240-cleaning assembly, 250-second box body, 310-translation mechanism, 311-movable frame, 312-elastic cover plate, 320-first box body, 340-electrode plate assembly, 341-positive plate layer, 342-insulating isolation layer, 343-negative plate layer, 344-through hole structure. DETAILED DESCRIPTION

[0037] Reference Figure 1-6 The electrostatic photolysis composite fume hood purification integrated device of the present invention comprises a fume hood 100, a photolysis purification chamber 200 and an electrostatic purification chamber 300. A fan (not shown) for extracting cooking fumes is arranged in the fume hood 100.

[0038] The smoke hood 100 is generally arranged above the stove. The oil smoke is sucked into the smoke hood 100 through the suction effect of the fan, and then flows into the next-level purification device. After the oil smoke is evolved and treated, it is discharged into the atmosphere if it meets the relevant environmental protection standards.

[0039] Reference Figure 2 The photolysis purification chamber 200 includes a second box 250, in which a cleaning assembly 240 and an ultraviolet lamp assembly 230 are arranged at intervals. The cleaning assembly 240 and the ultraviolet lamp assembly 230 are arranged in the second box 250 by using a detachable connection structure 220 that moves in a vertical direction. The ultraviolet lamp assembly 230 can photolyze and destroy the grease molecules in the oil smoke to achieve purification. At the same time, a cleaning assembly 240 is provided to spray and clean the ultraviolet lamp assembly 230 to remove impurities attached to the surface of the ultraviolet lamp assembly 230, so as to avoid the photolysis effect from being poor due to long-term use.

[0040] Reference Figure 4 and 5 The ultraviolet lamp assembly 230 adopts a movable and detachable connection structure 220, which can facilitate the replacement of the ultraviolet lamp during replacement; and the cleaning assembly 240 adopts a movable and detachable connection structure 220, which can move the cleaning assembly 240 to the outside of the second box body 250 when the equipment is working, and move it to the second box body 250 when cleaning is needed to clean the ultraviolet lamp assembly 230. This can ensure that the wind resistance caused by the cleaning assembly 240 is reduced when the equipment is working.

[0041] Specifically, the movable and detachable connecting structure 220 includes a first support frame 222, a second support frame 225, an outer sealing gasket 224 and an inner sealing gasket 223. The first support frame 222 is located in the second box body 250, and the second support frame 225 is located outside the second box body 250. The inner sealing gasket 223 is arranged at the bottom of the first support frame 222, and the outer sealing gasket 224 is arranged at the top of the second support frame 225. Several groups of cleaning components or ultraviolet lamp components 230 are arranged between the first support frame 222 and the second support frame 225. The inner sealing gasket 223 and the outer sealing gasket 224 are both larger than the through hole of the spray machine component or the ultraviolet lamp component 230 on the second box body 250.

[0042] For the ultraviolet lamp assembly 230, when the equipment is working normally, it is lowered and relying on gravity, the first support frame 222 is placed on the inner bottom of the second box body 250, and the inner sealing gasket 223 is pressed tightly to seal the through hole. The cleaning assembly 240 is outside the second box body 250 and will not block the flow of smoke in the second box body 250.

[0043] The movable and detachable connection structure 220 also includes a locking assembly, which includes a hook 227 fixed to the second box body 250. The end of the second support frame 225 is provided with a foldable and extendable extension portion 226, which can be extended deep into the hook 227 to fix the second support frame 225. When the equipment is used for a period of time and needs to be cleaned, the equipment is stopped, and the cleaning assembly 240 is moved up so that the outer sealing gasket 224 is close to the outer wall side of the through hole on the second box body 250, and then the extension portion 226 is unfolded and inserted into the hook 227, so that the entire cleaning assembly 240 and the support structure are positioned in the second box body 250, and the water pump for supplying cleaning liquid is started, so that the cleaning assembly 240 starts the spray cleaning work. The tops of the outer sealing gasket 224 and the inner sealing gasket 223 are both arc surface structures, and a liquid collection nozzle 210 is provided between the adjacent cleaning assemblies and the ultraviolet lamp assembly 230. The top of the outer sealing gasket 224 adopts an arc surface structure, which allows the waste liquid to slide from both sides to the liquid collecting nozzle 210 and then be discharged; while the inner sealing gasket 223 adopts an arc surface structure, which allows the grease to be discharged from the liquid collecting nozzle 210 during purification, avoiding accumulation on the top.

[0044] The extension portion is connected to the second support frame 225 by an elastic hinge, which can quickly reach the extreme position when extending and contracting, making the operation more convenient.

[0045] Reference Figure 2 , 3 6, the electrostatic purification chamber 300 includes a first box body 320, in which a plurality of electrode plate assemblies 340 are stacked in the vertical direction and arranged at a certain distance, and the electrode plate assembly 340 includes a positive plate layer 341 and a negative plate layer 343, and an insulating isolation layer 342 for isolating the positive plate layer 341 and the negative plate layer 343. The positive plate layer 341 and the negative plate layer 343 of two adjacent electrode plate assemblies 340 are arranged opposite to each other, and the positive plate layer 341 is located at the lower part of the negative plate layer 343. Each electrode plate assembly 340 is also provided with a plurality of through-hole structures 344, and the through-hole structures 344 of each layer are arranged along the coaxial line.

[0046] The positive electrode plate and the negative electrode plate are arranged in a horizontal stack, and the positive electrode plate is located at the bottom. In this way, when the oil fume passes through the electrode plate assembly 340, under the action of the electric field, the oil fume particles will fall in a parabolic shape, and then gather on the positive electrode plate. At the same time, with the action of gravity, the superposition of gravity and electric field force allows more oil fume particles to be separated from the oil fume. Compared with the vertical arrangement of the prior art, the oil fume purification ability is stronger; further, the electrode plate assembly 340 has a through-hole structure 344, and the separated oil will fall along the through-hole structure 344. Since the through-hole structure 344 is coaxial, it will fall directly to the bottom of the box when falling, and will not fall to the electrode plate assembly 340 of the next level, thereby reducing the adhesion of oil particles and will not have a significant impact on the electric field strength of the electrode plate assembly 340.

[0047] Reference Figure 6 For the convenience of cleaning, a spray mechanism is provided on the top of the first box 320. At the same time, in the electrode plate assembly 340, a certain number of electrode plate assemblies 340 are connected with a translation mechanism 310, which is used to move the electrode plate assembly 340 so that the through holes of the moved electrode plate assembly 340 are staggered with the through holes of other electrode plate assemblies 340. Through the translation mechanism 310, some of the electrode plate assemblies 340 in the electrode plate assembly 340 can be driven to move, so as to stagger a certain position with other electrode plate assemblies 340. The last method is that when the odd rows move, the even rows do not move, or when the even rows move, the odd rows do not move. The spray mechanism is located at the top, and first sprays the electrode plate assembly 340 at the top, and then the cleaning liquid flows to the electrode plate assembly 340 of the next level through the through hole. Since the electrode plate assembly 340 of the next layer is staggered with the electrode plate assembly 340 of the previous layer, the cleaning liquid coming down from the through hole structure 344 can clean the electrode plate assembly 340 of the next layer, and then pass through the electrode plate assembly 340 of the next layer. The electrode plate assembly 340 is spaced a certain height from the electrode plate assembly 340, so the gravity of the cleaning liquid can also have a certain flushing effect on the part that needs to be cleaned, so that the cleaning effect is better. Finally, it is collected through the liquid collection nozzle 330 at the bottom of the box for recycling.

[0048] It should be noted that the translation mechanism 310 includes a moving frame 311 connected to the outer wall of the first box body 320, the moving frame 311 is connected to the end of the electrode plate assembly 340, and an elastic cover plate 312 is provided on the first box body 320 to cover the connection hole between the moving frame 311 and the electrode plate assembly 340. There is a hole passing through the box body between the electrode plate assembly 340 located inside the box body and the moving frame 311 located outside the box body, and the elastic cover plate 312 can ensure that the hole is covered, and the hole will not be exposed even when moving, that is, there will be no oil fume leakage when purifying oil fume, and the cleaning liquid will not splash out when cleaning.

[0049] Both the photolysis purification chamber 200 and the electrostatic purification chamber 300 are provided with a guide plate at the inlet end, the guide plate adopts a trumpet-shaped structure, and a plurality of vents are provided on the guide plate. By providing the guide plate, the airflow can be guided to both sides of the box body, thereby ensuring the uniformity of the airflow, while increasing the amount of oil smoke that can be purified and improved purification efficiency.

[0050] A method for purifying oil smoke using an electrostatic photolysis composite fume hood 100 purifying integrated equipment comprises the following steps:

[0051] The fume collecting hood 100 collects the oil fume;

[0052] The oil smoke collected by the smoke collecting hood 100 is passed into the photolysis purification chamber 200, and the oil smoke is purified by the UV photolysis reaction principle;

[0053] The oil fume purified by the photolysis purification chamber 200 is then introduced into the electrostatic purification chamber 300. In the electrostatic purification chamber 300, through the gaps of the stacked electrode plate assemblies 340, when the electrode plate assemblies 340 are powered on, the oil fume particles in the oil fume are gathered in a parabolic state on the positive plate below under the action of gravity and the electric field. When the gathering amount exceeds a certain value, it flows from the through-hole structure 344 to the bottom of the first box body 320 and is collected.

[0054] It should be noted that the present invention also includes a cleaning process, comprising the following steps:

[0055] The translation mechanism 310 is moved so that some electrode plate assemblies 340 in the electrode plate assembly 340 are staggered with the through-hole structures 344 of other electrode plate assemblies 340, and the spray mechanism is started to spray cleaning liquid from the top to clean the top electrode plate assembly 340. The cleaning liquid falls from the top electrode plate assembly 340 through the through-hole structure 344 into the electrode plate assembly 340 of the next level in sequence to clean the electrode plate assembly 340 of the next level.

Claims

1. An electrostatic photolysis composite fume hood purification integrated device, comprising a fume hood, a photolysis purification chamber and an electrostatic purification chamber, wherein a fan for extracting cooking fumes is arranged in the fume hood, characterized in that: The electrostatic purification chamber comprises a first box body, in which a plurality of electrode plate assemblies are stacked in a vertical direction and arranged at a certain distance, the electrode plate assembly comprises a positive plate layer and a negative plate layer, and an insulating isolation layer for isolating the positive plate layer from the negative plate layer, the positive plate layer and the negative plate layer of two adjacent electrode plate assemblies are arranged opposite to each other, and the positive plate layer is located below the negative plate layer; Each electrode plate assembly is also provided with a plurality of through-hole structures, and the through-hole structures of each layer are arranged along a coaxial line; the separated oil will fall along the through-hole structures, flow to the bottom of the first box body, and be collected; A spray mechanism is provided on the top of the first box; In the electrode plate assembly, a certain number of electrode plate assemblies are connected to a translation mechanism for moving the electrode plate assembly so that the through holes of the moved electrode plate assembly are staggered with the through holes of other electrode plate assemblies; The photolysis purification chamber comprises a second box body, in which a cleaning assembly and an ultraviolet lamp assembly are arranged at intervals, and the cleaning assembly and the ultraviolet lamp assembly are arranged in the second box body by adopting a detachable connection structure that moves in a vertical direction; The movable and detachable connection structure includes a first support frame, a second support frame, an outer sealing pad and an inner sealing pad, the first support frame is located inside the second box, the second support frame is located outside the second box, the inner sealing pad is arranged at the bottom of the first support frame, the outer sealing pad is arranged at the top of the second support frame, and a plurality of groups of spray machine assemblies or ultraviolet lamp assemblies are arranged between the first support frame and the second support frame, and the inner sealing pad and the outer sealing pad are both larger than the through hole of the spray machine assembly or the ultraviolet lamp assembly on the second box; The movable and detachable connection structure further includes a locking assembly, wherein the locking assembly includes a hook fixed to the second box body, and an end portion of the second support frame is provided with a foldable and extendable extension portion, and the extension portion can be extended deeply into the hook to fix the second support frame; The photolysis purification chamber and the electrostatic purification chamber are both provided with a guide plate at the inlet end, the guide plate adopts a trumpet-shaped structure, and a plurality of vent holes are opened on the guide plate.

2. The electrostatic photolysis composite fume hood purification integrated equipment according to claim 1 is characterized in that: The translation mechanism includes a moving frame connected to the outer side wall of the first box body, the moving frame is connected to the end of the electrode plate assembly, and an elastic cover plate is provided on the first box body to cover the connection hole between the moving frame and the electrode plate assembly.

3. The electrostatic photolysis composite fume hood purification integrated equipment according to claim 1 is characterized in that: The extension portion is connected to the second support frame by using an elastic hinge.

4. The electrostatic photolysis composite fume hood purification integrated equipment according to claim 1 or 3, characterized in that: The tops of the outer sealing pad and the inner sealing pad both adopt arc surface structures, and a liquid collecting nozzle is arranged between the adjacent cleaning components and the ultraviolet lamp components.

5. A method for purifying oil fume using the electrostatic photolysis composite fume hood purification integrated device as described in any one of claims 1 to 4, characterized in that: The steps include: The fume hood collects the fumes; The oil smoke collected by the smoke hood is passed into the photolysis purification chamber, and the oil smoke is purified by the UV photolysis reaction principle; The oil fume purified in the photolysis purification chamber is then passed into the electrostatic purification chamber. In the electrostatic purification chamber, through the gaps of the stacked electrode plate assemblies, when the electrode plate assemblies are energized, the oil fume particles in the oil fume are gathered in a parabolic state on the positive plate below under the action of gravity and the electric field. When the gathering amount exceeds a certain value, it flows from the through-hole structure to the bottom of the first box body and is collected.

6. The oil fume purification method according to claim 5, characterized in that: The following steps are also included: Move the translation mechanism so that some electrode plate assemblies in the electrode plate assembly are staggered with the through-hole structures of other electrode plate assemblies, start the spray mechanism, spray cleaning liquid from the top to clean the top electrode plate assembly, and the cleaning liquid falls from the top electrode plate assembly through the through-hole structure into the next-level electrode plate assembly in turn to clean the next-level electrode plate assembly.

Images