A method and device for purifying cooking fume waste gas

Abstract

The present invention discloses a method and a purification device for oil fume waste gas, and relates to the field of air purification. In order to solve the problem of oil fume waste gas pollution, a shell, a first air outlet, a second air outlet, a left door, a right door, a flow equalizer, a flow equalizer fixing assembly, an emission tip, a generator, a rear cover and an oil leakage port with a plug are provided, the left door and the right door are installed at the front of the shell, the first air outlet and the second air outlet are installed at the left and right ends respectively, a plurality of flow equalizers are fixed at equal intervals inside, a rear cover is installed at the rear, a plurality of generators are installed at equal intervals on the inner wall of the rear cover, an emission tip extends from the front end of the generator, and the emission tip extends into the interior of the shell through the corresponding opening at the rear of the shell, and the oily air enters from one of the air outlets, the oil is ionized under the action of the negative ions emitted by the emission tip, and then is adsorbed and precipitated, and finally flows to the inner wall of the shell and is discharged through the oil leakage port with a plug, and the other air outlet discharges clean air to achieve air purification.

Description

Technical Field

[0001] The invention relates to the field of air purification, and in particular to a fume exhaust gas purification method and a purification device thereof. Background Art

[0002] Cooking fume waste gas is a common pollutant in kitchens and industrial production. If inhaled into the respiratory tract, it will cause harm to the human body and affect human health. If the cooking fume is directly discharged to the outside, it will pollute the ambient air. Therefore, it is crucial to effectively treat the cooking fume waste gas before discharging it to the outside. However, the general equipment for removing cooking fume waste gas has the disadvantages of loud noise, inconvenient cleaning and imperfect purification effect. The purpose of this invention is to design a cooking fume waste gas purification method and device that can solve the above defects. Summary of the invention

[0003] The invention discloses a cooking fume waste gas purification method and a purification device thereof, which can purify cooking fume waste gas in the air.

[0004] In order to solve the technical problem, the present invention adopts the following technical solution:

[0005] First, a fume exhaust gas purification device is proposed, including a shell, a first air outlet, a second air outlet, a left door, a right door, a flow equalizer, a flow equalizer fixing assembly, an emission tip, a generator, a rear cover and an oil leakage port with a plug; the shell is a box with an open front, and a left door and a right door are respectively installed at the front ends of the shell, and the ends of the left door and the right door that contact each other when closed are provided with a latch; the left and right ends of the shell are opened, and the first and second air outlets are respectively installed at the openings; the bottom of the shell is provided with an oil leakage port with a plug; the interior of the shell is fixed by a flow equalizer The component is fixed with multiple current equalizing plates at equal intervals; the rear of the shell is provided with multiple openings, and a rear cover is installed at the rear, and multiple generators are installed on the inner wall of the rear cover at equal intervals, and an emission tip extends from the front end of the generator, and the emission tip extends into the interior of the shell through the corresponding opening at the rear of the shell, and an insulating terminal is provided at the connection of the opening, and the emission tip is located between the two current equalizing plates; the emission tip includes a screw and multiple circular emission pieces with spikes welded thereto, and the outer edge of the emission piece has multiple spikes, and the spikes are bent toward the two sides of the emission piece in sequence.

[0006] Preferably, the current balancing plate fixing assembly has a slot, and two groups of current balancing plate fixing assemblies are symmetrically installed on the upper wall and the lower wall inside the device. The current balancing plate is inserted between the two groups of current balancing plate fixing assemblies through the slot, and 4 current balancing plates are installed.

[0007] Preferably, three generators are installed, the angle at which the spikes of the emitting plate at the emitting tip of the generator are bent toward the two sides of the emitting plate is 30 degrees, and the negative DC high voltage output by the generator is negative 20,000 volts.

[0008] Preferably, the distance from the emission tip to the bottom of the shell is 160 mm, and the distance from the edge of the emission tip to the current equalizing plate is 130 mm.

[0009] Preferably, the shell, the emission tip and the flow equalizing plate are all made of 304# stainless steel.

[0010] In addition, the present application also proposes a method for purifying cooking fume waste gas, which is applied to a cooking fume waste gas purification device proposed in the present application, and comprises the following steps:

[0011] (a) introducing the air containing oil fume waste gas into the device from the first metal circle or the second air outlet at one end;

[0012] (b) A plurality of equalizing plates are arranged in the device, and the air to be treated is uniformly introduced through the equalizing plates. The equalizing plates intercept large particles of oil and dirt, and at the same time, the gas is uniformly distributed in space. A plurality of openings are opened at the rear of the shell, and a rear cover is installed. A plurality of generators are evenly installed on the inner wall of the rear cover. An emission tip extends from the front end of the generator, so that the emission tip extends into the interior of the shell through the corresponding opening at the rear of the shell, and an insulating terminal is arranged at the connection of the opening. The emission tip is located between two equalizing plates. After the external power supply is connected, the generator is energized, the shell is grounded, and the equalizing plate is in direct contact with the shell so as to have the same potential as the shell.

[0013] (c) The generator outputs negative DC high voltage electricity. The emission tip connected to the front end of the generator includes a screw and a plurality of circular emission pieces with spikes welded thereto. The outer edge of the emission piece has a plurality of spikes, which are bent toward the two sides of the emission piece in sequence. The negative DC high voltage electricity is released through the emission tip, and a large amount of negative charge is quickly released into the air.

[0014] (d) Gas particles carrying oil smoke and exhaust gas enter the high-voltage electrostatic field generated by the negative charge released by the emission tip and are ionized. Pollutant particles in the gas collide with the negative charge and combine to become negatively charged. The negatively charged pollutant particles are adsorbed onto the various surfaces of the shell and the flow equalizing plate. The pollutant particles gather on the shell and the flow equalizing plate and sink to the bottom of the shell.

[0015] (e) The gas continues to pass through the flow equalizing plate into the next electrostatic field and undergoes multiple steps of treatment until the air flows out from the first air outlet or the second air outlet at the other end of the device after the treatment is completed;

[0016] (f) The oil settled at the bottom of the device is discharged through the oil leakage port with plug;

[0017] (h) Open the left and right doors by latching for further cleaning.

[0018] Preferably, in step b, the current balancing plate fixing assembly has a slot, and two groups of current balancing plate fixing assemblies are symmetrically installed on the upper wall and lower wall inside the device. The current balancing plate is inserted between the two groups of current balancing plate fixing assemblies through the slot, and 4 current balancing plates are installed.

[0019] Preferably, in step b or step c, three generators are installed, the angle at which the spikes of the emitting plate at the emitting tip of the generator are bent toward the two sides of the emitting plate is 30 degrees, and the negative DC high voltage output by the generator is negative 20,000 volts.

[0020] Preferably, the distance from the emission tip to the bottom of the shell is 160 mm, and the distance from the edge of the emission tip to the current equalizing plate is 130 mm.

[0021] Preferably, the shell, the emission tip and the flow equalizing plate are all made of 304# stainless steel.

[0022] The invention provides a method and a purification device for oil fume waste gas, which have the following beneficial effects: large particles of oil fume are blocked by setting a flow equalizing plate to ensure the subsequent oil fume waste gas purification effect; the oil fume waste gas in the air is effectively precipitated by the high-voltage electrostatic field generated by the generator and the emission tip; repeated purification is achieved by setting a multi-layer flow equalizing plate generator and the emission tip, and the oil fume waste gas purification effect is improved; the purification effect is achieved by the high-voltage electrostatic field generated by the generator and the emission tip, which is quiet and noiseless; a waterproof box is set to protect the generator to ensure the safety of the device; the front and back sides of the thorns on the thorny generating sheet are staggered and bent, so that the emitted ions are emitted in all directions, and the high-voltage electrostatic field formed is evenly distributed, and the purification effect is better; an oil leakage port with a plug is set to remove sediments, reducing the subsequent cleaning consumption; left and right doors that can be opened are set in front of the device, which is convenient for regular cleaning of the inside of the device; the distance between the emission tip and the bottom of the device is set to 160 mm, and the distance from the emission tip to the flow equalizing plate is 130 mm, so that the emission tip can efficiently generate a high-voltage electrostatic field while ensuring the safety of the device; at the same time, the generator itself can convert low-voltage electricity into high-voltage electricity, which has the beneficial effect of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a top perspective view of the structure of an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the transmitter;

[0025] Figure 3 This is a schematic diagram of the bending of the spikes of the transmitting piece of the present invention;

[0026] Among them, 1-shell, 201-first air outlet, 202-second air outlet, 3-left door, 4-right door, 5-flow equalizing plate, 6-flow equalizing plate fixing assembly, 7-emitting tip, 8-generator, 9-rear cover, 10-oil leakage hole with plug, 11-emitting piece. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1 A fume exhaust gas purification device is shown, wherein Figure 1 The left door 3 and the right door 4 of the device are in a half-open state.

[0029] The device includes a housing 1, a first air outlet 201, a second air outlet 202, a left door 3, a right door 4, a flow equalizing plate 5, a flow equalizing plate fixing assembly 6, an emission tip 7, a generator 8, a rear cover 9 and an oil leak port 10 with a plug. The housing 1 of the device is a box with an open front end, and the left and right halves of the front end are respectively installed with a left door 3 and a right door 4 that can be opened. The left door 3 and the right door 4 have a latch at one end that contacts when closed. The latch is a common lock structure in the installation of the door, which can realize the locking function of the door. The left door 3 and the right door 4 are both fixed to the housing 1 by a hinge, and are a structure that can be opened to the side. Round holes are opened at the left and right ends of the housing 1, and the first air outlet 201 and the second air outlet 202 for letting in and out air are respectively installed at the opening.

[0030] The interior of the device is fixed with multiple equalizing plates 5 at equal intervals through the equalizing plate fixing assembly 6. The equalizing plate fixing assembly 6 has a slot. Two groups of equalizing plate fixing assemblies 6 are symmetrically installed on the upper wall and the lower wall inside the device through screws. The equalizing plate 5 is inserted between the two groups of equalizing plate fixing assemblies 6 through the slot. The equalizing plate 5 can make the incoming air to be treated evenly distributed in space. At the same time, since the equalizing plate 5 is a structure with a plurality of circular holes, the equalizing plate 5 can also filter out large particles of oil smoke and exhaust gas in the air. For safety reasons, multiple generators 8 are installed on the inner wall of a rear cover 9 with a lower opening by screws at equal intervals, and the rear cover 9 with the generator 8 installed is installed at the rear of the shell 1. The rear of the shell 1 can be opened according to the wiring requirements. The rear of the shell 1 has multiple small holes. The emission tip 7 at the front end of the generator 8 extends into the interior of the shell 1 through the small hole at the rear of the shell 1, and the opening connection is installed with an insulating terminal for protection.

[0031] Multiple Figure 2 As shown, a circular emitting piece 11 with spikes and a screw are welded together to form an emitting tip 7. There is a circular hole in the middle of the emitting piece 11, and the screw passes through the circular hole for welding. Figure 3 As shown, the spikes of each emitting sheet 11 are bent toward both sides of the emitting sheet 11 in turn, and the bending angle is preferably 30 degrees, so that the ions emitted by it are emitted in all directions, and the high-voltage electrostatic field formed is evenly distributed, and the purification effect is better. The opening at the rear of the housing 1 also includes a hole for wiring the device.

[0032] In order to achieve a better purification effect, preferably, four equalizer plates 5 are installed, and preferably three sets of generators 8 are installed. After the treated air enters the device, it will be treated by equalizing the flow and filtering large particles of oil fume exhaust gas by the four equalizer plates 5 and purified by three high-voltage electrostatic fields. An oil leakage port 10 with a plug is provided at the bottom of the housing 1 to facilitate the leakage of deposited oil and dirt.

[0033] In addition, for safety reasons, the distance between the emission tip 7 and the grounded shell 1 or the current equalizing plate 5 should be greater than 100mm, the distance between the emission tip 7 and the bottom of the shell 1 is preferably 160mm, and the distance between the outer edge of the emission tip 7 and the current equalizing plate 5 is preferably 130mm, which not only ensures that a safe distance is maintained between the emission tip 7 with high-voltage negative charge and the shell 1, but also ensures the normal generation of high-voltage electrostatic field. The material of the shell, emission tip and current equalizing plate is preferably 304# stainless steel, which has the advantages of wear resistance, low temperature resistance and good thermal expansion.

[0034] Example 2

[0035] The following is a description of a method for purifying cooking fume waste gas applied to the above device in conjunction with the accompanying drawings. Figure 1 As shown, the air containing oil fume exhaust gas is introduced from the first air outlet 201 or the second air outlet. A plurality of equalizing plates 5 and generators 8 are installed inside the device. The air to be treated is uniformly introduced through the equalizing plates 5. The equalizing plates 5 intercept large particles of oil and dirt. The remaining air is uniformly sent into the internal space of the device under the action of the equalizing plates 5. Then the device is connected to electricity through a three-phase power supply. After the power is turned on, the generator 8 is energized, the shell 1 and the equalizing plates 5 in contact with the shell are grounded, and the generator 8 operates to generate negative DC high voltage electricity. The DC high voltage electricity is DC electricity greater than 1500 volts. The negative DC high voltage electricity generated by the generator 8 of the present invention is negative 20,000 volts. Since the generator 8 converts the low voltage point into high voltage electricity, the device also has the advantage of energy saving.

[0036] For safety reasons, the generator 8 is mounted on a rear cover 9 with an open bottom, which is connected to the upper part of the housing 1. The emission tip 7 connected to the front end of the generator 8 is welded together by a plurality of circular emission pieces 11 with spikes and a screw. Figure 2 As shown, each emitting piece 11 has a plurality of spikes, such as Figure 3 As shown, the spikes are bent toward both sides of the emitting sheet 11 in sequence, and the bending angle is preferably 30 degrees. The emitting tip 7 extends through the opening at the rear of the housing 1, and an insulating terminal is installed at the connection with the housing 1 for protection.

[0037] After the generator 8 generates a direct current negative high voltage, it is released through the emission tip 7. The emission tip 7 quickly releases a large amount of negative charge into the air and generates ion wind, forming a high-voltage electrostatic field between the grounded shell 1 and the current equalizing plate 5. Since the spikes of the generating sheet are bent in turn to both sides, the ions emitted by it are shot in all directions, and the high-voltage electrostatic field formed is evenly distributed, and the purification effect is better. After the air with oil fume exhaust gas enters the high-voltage electrostatic field, it is ionized under the action of a large number of negative ions. The polluted particles collide and combine with the negative charges in the device to be transformed into charged ions. The charged ions are adsorbed to the inner wall of the shell 1 or the current equalizing plate 5. The emission tip 7 will not adsorb pollutants, so it remains safe and clean, and then settles at the bottom of the shell 1 and is discharged through the plugged oil leak 10. Finally, after the treatment is completed, the air flows out from the first air outlet 201 or the second air outlet 202 at the other end of the device. The left and right doors can be opened by latches to further clean the device.

[0038] In order to achieve a better purification effect, multiple groups of equalizing plates 5 and generators 8 are installed in the device. Each group of generators 8 and emission tips 7 generates an electrostatic field to ensure that there is a sufficiently strong high-voltage electrostatic field everywhere inside the device. The incoming air passes through the equalizing plates 5 in turn and enters the high-voltage electrostatic field generated by different emission tips 7 and generators 8, and after several treatments, better purification is achieved. Among them, according to the internal dimensions of the device, the equalizing plates 5 are preferably 4, and the generators 8 are preferably installed in 3 sets. The distance between the emission tip 7 of the device and the bottom of the shell 1 is preferably 160mm, and the distance between the outer edge of the emission tip 7 and the equalizing plate 5 is preferably 130mm, which not only ensures that a safe distance is maintained between the emission tip 7 with high voltage negative charge and the shell 1 and the equalizing plate 5, but also ensures the normal generation of the high-voltage electrostatic field.

Claims

1. A fume exhaust gas purification device, characterized in that: The invention comprises a shell (1), a first air outlet (201), a second air outlet (202), a left door (3), a right door (4), a flow equalizing plate (5), a flow equalizing plate fixing assembly (6), an emission tip (7), a generator (8), a rear cover (9) and an oil leakage port with a plug (10); the shell (1) is a box body with an open front, the left door (3) and the right door (4) are respectively installed at the two ends of the front of the shell (1), and the ends of the left door (3) and the right door (4) that contact each other when closed are provided with a latch; the left and right ends of the shell (1) are opened, and the first air outlet (201) and the second air outlet (202) are respectively installed at the openings; the bottom of the shell (1) is provided with an oil leakage port with a plug (10); the interior of the shell (1) is provided with a plurality of holes; the oil leakage port (10 ... A plurality of current balancing plates (5) are fixed at equal intervals through a current balancing plate fixing assembly (6); a plurality of openings are provided at the rear of the housing (1), and a rear cover (9) is installed at the rear; a plurality of generators (8) are installed at equal intervals on the inner wall of the rear cover (9); an emission tip (7) extends from the front end of the generator (8); the emission tip (7) extends into the interior of the housing (1) through an opening corresponding to the rear of the housing (1); an insulating terminal is provided at the connection of the openings; the emission tip (7) is located in the center of two current balancing plates (5); the emission tip (7) comprises a screw and a plurality of circular emission sheets (11) with spikes welded thereto; the edge of the emission sheet (11) has a plurality of spikes, and the spikes are bent toward the two side surfaces of the emission sheet (11) in sequence; The current balancing plate fixing assembly (6) has a slot, and two sets of current balancing plate fixing assemblies (6) are symmetrically mounted on the upper wall and the lower wall inside the device, and the current balancing plate (5) is inserted between the two sets of current balancing plate fixing assemblies (6) through the slot, and four current balancing plates (5) are installed; Three generators (8) are installed, and the angle at which the spike of the emitting piece (11) of the emitting tip (7) of the generator (8) is bent toward the two side surfaces of the emitting piece (11) is 30 degrees. The negative direct current high voltage output by the generator (8) is negative 20,000 volts.

2. The oil fume exhaust gas purification device according to claim 1, characterized in that: The distance between the emission tip (7) and the bottom of the housing (1) is 160 mm, and the distance between the edge of the emission tip (7) and the current equalizing plate (5) is 130 mm.

3. The oil fume exhaust gas purification device according to claim 1, characterized in that: The shell (1), the emission tip (7) and the flow equalizing plate (5) are all made of 304# stainless steel.

4. A method for purifying cooking fume waste gas, applied to a cooking fume waste gas purification device according to any one of claims 1 to 3, characterized in that: The method comprises the following steps: (a) introducing air containing oil fume waste gas from a first air port (201) or a second air port (202) at one end of the device; (b) arranging a plurality of flow equalizers (5) in the device, and the air to be treated is uniformly introduced through the flow equalizers (5), the flow equalizers (5) intercept large particles of oil and dirt, and at the same time, the gas is uniformly distributed in space; a plurality of openings are opened at the rear of the housing (1), and a rear cover (9) is installed; a plurality of generators (8) are installed at equal intervals on the inner wall of the rear cover (9), and the front end of the generator (8) extends outward. The emitter tip (7) is configured to extend into the interior of the shell (1) through an opening corresponding to the rear of the shell (1), and an insulating terminal is provided at the connection of the opening. The emitter tip (7) is located between two current equalizing plates (5). After the generator (8) is powered by an external power supply, the shell (1) is grounded, and the current equalizing plates (5) are in direct contact with the shell (1) so that they have the same potential as the shell (1); (c) the generator (8) outputs a negative DC high voltage. The emitter tip (7) connected to the front end of the generator (8) includes a screw and a screw welded thereto. A plurality of circular emitting pieces (11) with spikes are arranged together, and the outer edge of the emitting piece (11) has a plurality of spikes, and the spikes are bent toward the two side surfaces of the emitting piece (11) in sequence, and the DC negative high voltage electricity is released through the emitting tip (7), and a large amount of negative charge is quickly released into the air; (d) the gas particles carrying the oil smoke and exhaust gas enter the high voltage electrostatic field generated by the negative charge released by the emitting tip (7) and are ionized, and the pollutant particles in the gas collide with the negative charge and combine to be negatively charged, and the negatively charged pollutant particles are adsorbed to each of the shell (1) (e) the gas continues to pass through the flow equalizing plate (5) into the next electrostatic field and undergoes multiple treatments of step (d) until the air is discharged from the first air outlet (201) or the second air outlet (202) at the other end of the device after the treatment is completed; (f) the pollutants settled at the bottom of the device are discharged through the oil leakage port (10) with a plug; (h) the left door (3) and the right door (4) are opened by a latch for further cleaning.

5. The method for purifying cooking fume waste gas according to claim 4, characterized in that: In step b, the current balancing plate fixing assembly (6) has a slot, and two groups of current balancing plate fixing assemblies (6) are symmetrically installed on the upper wall and the lower wall inside the device. The current balancing plate (5) is inserted between the two groups of current balancing plate fixing assemblies (6) through the slot, and four current balancing plates (5) are installed.

6. The method for purifying cooking fume waste gas according to claim 4, characterized in that: In step c, the generator is equipped with three emission plates (11) at the emission tip of the generator, and the DC negative high voltage output by the generator (8) is negative 20,000 volts.

7. The method for purifying cooking fume waste gas according to claim 4, characterized in that: The distance between the emission tip (7) and the bottom of the housing (1) is 160 mm, and the distance between the edge of the emission tip (7) and the current equalizing plate (5) is 130 mm.

8. The method for purifying cooking fume waste gas according to claim 4, characterized in that: The shell (1), the emission tip (7) and the flow equalizing plate (5) are all made of 304# stainless steel.

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