Oil smoke removal equipment with automatic washing function and control method thereof

Abstract

The invention discloses lampblack removing equipment with an automatic washing function and a control method thereof.The lampblack removing equipment comprises a shell divided into an upper part and a lower part, an ionization unit and a washing unit are arranged in the shell, the ionization unit is arranged on the upper shell, lampblack concentration sensors are arranged at the two ends of the ionization unit, and the washing unit comprises a rotary spraying, supplying and wastewater recycling mechanism; a control unit is arranged on the front side of the shell; air valves are arranged on the two sides of the upper shell; the air valve on the output end side of the ionization unit is connected with an external fan through an oil fume pipe and is used for extracting kitchen oil fume and sending the kitchen oil fume to the ionization unit for filtration; all the parts are in signal connection with the control unit; according to the invention, the oil smoke concentration on the two sides of the ionization unit is detected in real time, and the corresponding cleaning mode is automatically started according to the purification efficiency and the operation duration of the ionization unit.

Description

Technical Field

[0001] This invention patent relates to the field of air purification, and specifically to an oil fume removal device with automatic water washing and its control method. Background Technique

[0002] The automatic water washing oil fume electrostatic filter is an advanced oil fume treatment device. This device utilizes the electrostatic principle to ionize and adsorb the particulate matter in the oil fume through a high-voltage electric field, thereby achieving the effect of filtering the oil fume. In order to maintain the continuous and efficient operation of the filter, the device is equipped with an automatic water washing system. The automatic water washing system can be automatically started regularly to clean the electrostatic filter, remove the oil stains and impurities attached to the electrode plates, and ensure the permeability and filtration efficiency of the filter.

[0003] The current technical defects of the electrostatic filtering devices with automatic water washing systems commonly found in the market include:

[0004] 1. The spraying method is fixed, and the spray pipes and nozzles are fixed, and it is impossible to control the cleaning method and duration by judging the cleaning effect;

[0005] 2. By setting a fixed cycle for cleaning, although a certain cleaning effect can be achieved, for different types of customers, it is impossible to judge the different oil fume concentrations by themselves. In the fixed cleaning mode, the energy consumption is relatively excessive for users with light oil fume, and relatively insufficient for users with heavy oil fume, and the cleaning effect is limited;

[0006] 3. The degree of intelligence is insufficient. Summary of the Invention

[0007] The purpose of this invention patent is to provide an oil fume removal device with automatic water washing and its control method to solve the problems raised in the above background technique.

[0008] To solve the above technical problems, this invention patent provides the following technical solution: An oil fume removal device with automatic water washing includes a housing. An ionization unit and a water washing unit are arranged inside the housing. The housing includes an upper housing and a lower housing. The ionization unit is installed inside the upper housing. Oil fume concentration sensors are respectively installed on the output side and the input side of the ionization unit. The water washing unit includes a rotating spray mechanism arranged inside the upper housing and a supply mechanism and a waste water recovery mechanism arranged inside the lower housing. The supply mechanism is used to provide a cleaning agent for the rotating spray mechanism. The waste water recovery mechanism is hermetically installed at the top of the lower housing, and the bottom end of its outer wall communicates with the drain pipe of the lower housing through penetration. A control unit is arranged on the front side of the housing. Air valves are symmetrically arranged on the outer walls on both sides of the upper housing. The air valve on the output side of the ionization unit is connected to an external fan through an oil fume pipe. The external fan is used to extract the oil fume generated in the kitchen and transport it to the ionization unit for filtration. The oil fume concentration sensors, the ionization unit, the water washing unit, the air valves and the external fan are all connected to the control unit for signal transmission.

[0009] Furthermore, the ionization unit includes two or more symmetrically arranged ionization groups, the ionization group is composed of one or more ion boxes arranged in parallel, the rotary spray mechanism includes an electric rotary actuator installed in a mirror-symmetrical manner on the input and output ends of the ionization unit, a shunt pipe and a second shunt pipe arranged between the ionization groups, one end of the first shunt pipe is transmission-connected to the execution end of the electric rotary actuator on the corresponding side, and the other end is rotationally connected to the inner wall of the upper shell body, N high-pressure fan-shaped nozzles are provided on the side of the first shunt pipe close to the ionization unit, the two ends of the second shunt pipe are respectively fixedly connected to the inner walls of both sides of the upper shell body, and the top of the second shunt pipe is provided with a 360° automatic rotating nozzle corresponding to the number of ion boxes in each ionization group, and the electric rotary actuator is signal-connected to the control unit.

[0010] Furthermore, the supply mechanism includes a medicine tank, a hot water tank, a transfer tank and a water pump. The transfer box is connected to the first shunt pipe and the second shunt pipe respectively through a shunt pipeline. The transfer box is connected to the output end of the medicine tank and the output end of the hot water tank through the first delivery pipeline and the second delivery pipeline respectively. The water pump is installed on the main line of the shunt pipeline. The main line of the shunt pipeline between the water pump and the rotary spray mechanism, the first delivery pipeline and the second delivery pipeline are respectively provided with a water delivery valve, a medicine valve and a hot water valve. The water pump, the water delivery valve, the medicine valve and the hot water valve are all connected to the control unit signal.

[0011] Furthermore, a backflow funnel sheet metal for adding medicine is rotatably provided on the front side of the top of the medicine box.

[0012] Furthermore, an oil-water separator is installed on the rear side of the lower shell, the sewage inlet of the oil-water separator is connected to the output end of the drain pipe through a drain pipeline, the water circulation interface of the oil-water separator is connected to the transfer box through a circulation pipeline, and the oil-water separator is also provided with an oil drain port and a drain port, and the drain pipeline, circulation pipeline, oil drain port and drain port are all provided with a one-way valve, a circulation valve, an oil drain valve, and a drain valve, and the one-way valve, circulation valve, oil drain valve and drain valve are all connected to the control unit signal.

[0013] Furthermore, the circulation valve is an electromagnetic three-way valve, one end of which is connected to an external water source.

[0014] A method for determining the number of high-pressure fan-shaped nozzles corresponding to each ion box based on an oil fume removal device with automatic water washing: the angle of the high-pressure fan-shaped nozzle water curtain is defined as α, the total length of the ion box is defined as L, the minimum distance between the high-pressure fan-shaped nozzle and the ion box is defined as X, the number of high-pressure fan-shaped nozzles is defined as n, and the formula for the number of high-pressure fan-shaped nozzles is:

[0015]

[0016] A control method implemented based on an oil fume removal device with automatic water washing, comprising the following steps:

[0017] S1: The external fan is started, and a signal is sent to the control unit. The control unit starts the air valve, the ionization unit, and two sensors, and records the operation duration of the electrostatic unit;

[0018] S2: The two sensors detect the oil fume concentration values on the output side and the input side of the ionization unit in real time and feedback them to the control unit;

[0019] S3: The control unit judges the oil fume purification efficiency of the ionization unit according to the real-time oil fume concentration values respectively fed back by the two sensors;

[0020] The oil fume purification efficiency is the oil fume concentration value on the output side of the ionization unit / the oil fume concentration value on the input side of the ionization unit;

[0021] S4: When the oil fume purification efficiency ≤ the standard oil fume purification efficiency, the control unit starts the intelligent cleaning mode according to the current oil fume purification efficiency and the operation duration of the ionization unit;

[0022] The intelligent cleaning mode is that the control unit turns off the external fan, the air valve, and the ionization unit, and starts the water washing unit;

[0023] The quick wash mode: the operation duration of the ionization unit ≤ 55 hours, and the purification efficiency ≤ 90%;

[0024] The standard wash mode: the operation duration of the ionization unit ≥ 110 hours, and the purification efficiency ≤ 80%;

[0025] The super strong wash mode: the operation duration of the ionization unit ≥ 110 hours, and the purification efficiency ≤ 75%;

[0026] The energy-saving wash mode: after the standard wash mode and the super strong wash mode are completed, 55 hours < the operation duration of the ionization unit ≤ 110 hours, and the purification efficiency ≤ 85;

[0027] The operation modes of the quick wash mode, the energy-saving wash mode, the standard wash mode, and the super strong wash mode are respectively:

[0028] The quick wash mode: the control unit starts the water pump, controls the water delivery valve to open, and at the same time controls the circulation valve to connect the external water source and the transfer tank. The water pump pumps the external water source and conveys it to the rotary spraying mechanism to spray cold water on the ionization unit. After the cold water spraying is completed, the control unit turns off the water washing unit and opens the external fan and the air valve. The external fan conveys the external wind energy to dry the inside of the upper shell, the ionization unit, and the rotary spraying mechanism;

[0029] The described standard washing mode: The control unit starts the water pump, controls the opening of the water delivery valve and the chemical agent valve, and at the same time controls the circulation valve to connect the external water source and the transfer tank. The water pump pumps the water from the external water source and the chemical agent in the chemical agent tank and transports it to the rotary spraying mechanism to spray cold water and chemical agent on the ionization unit. After the cold water and chemical agent spraying is completed, the control unit closes the chemical agent valve. The water pump pumps the external water source and transports it to the rotary spraying mechanism to clean the residual chemical agent on the ionization unit. After the cleaning is completed, the control unit closes the water washing unit and opens the external fan and the air valve. The external fan transports the external wind energy to air-dry the interior of the upper shell, the ionization unit and the rotary spraying mechanism;

[0030] The described super strong washing mode: The control unit starts the water pump and controls the water delivery valve, the hot water valve and the chemical agent valve. The water pump pumps the hot water in the hot water tank and the chemical agent in the chemical agent tank to spray hot water and chemical agent on the ionization unit. After the hot water and chemical agent spraying is completed, the control unit closes the chemical agent valve and the hot water valve. At the same time, it controls the circulation valve to connect the external water source and the transfer tank. The water pump pumps the external water source and transports it to the rotary spraying mechanism to clean the residual chemical agent on the ionization unit. After the cleaning is completed, the control unit closes the water washing unit and opens the external fan and the air valve. The external fan transports the external wind energy to air-dry the interior of the upper shell, the ionization unit and the rotary spraying mechanism;

[0031] The described energy-saving washing mode: The control unit starts the water pump and controls the opening of the water delivery valve. At the same time, it controls the circulation valve to connect the oil-water separator and the transfer tank. The water pump pumps the chemical agent-containing water separated in the oil-water separator to spray on the ionization unit. After the spraying is completed, the control unit controls the circulation valve to close the connection between the oil-water separator and the transfer tank, and controls the circulation valve to connect the external water source and the transfer tank. The water pump pumps the external water source and transports it to the rotary spraying mechanism to clean the residual chemical agent-containing water separated in the oil-water separator on the ionization unit. After the cleaning is completed, the control unit closes the water washing unit and opens the external fan and the air valve. The external fan transports the external wind energy to air-dry the interior of the upper shell, the ionization unit and the rotary spraying mechanism.

[0032] The beneficial effects achieved by this invention patent are as follows:

[0033] 1. By real-time detecting the oil fume concentration on both sides of the ionization unit, it can intelligently judge the oil fume purification efficiency, and automatically start the corresponding cleaning mode according to the purification efficiency and the operation duration of the ionization unit. This intelligent monitoring and adaptive cleaning mechanism ensures that the equipment always operates in the best state.

[0034] 2. The water washing unit including a rotary spraying mechanism and a supply mechanism is automatically controlled by a equipped control unit. The rotary spraying mechanism drives the shunt pipe and the high-pressure fan-shaped nozzle to rotate up and down through an electric rotary actuator, ensuring that the cleaning agent can be evenly sprayed onto all corners of the ionization unit, avoiding the problem of cleaning dead corners. At the same time, the supply mechanism can provide cleaning water in different modes for the water washing unit, including cleaning water with added chemicals or hot water, to meet different cleaning requirements.

[0035] 3. The setting of the high-pressure fan-shaped nozzle makes its spraying effect more uniform through the design of its own fan-shaped nozzle, achieving a higher spraying coverage rate. At the same time, the high-pressure setting of the high-pressure fan-shaped nozzle can provide a strong spraying force, which is very effective for removing stubborn oil stains. The reverse flow funnel sheet metal design at the top of the chemical agent tank makes it simple and convenient to replenish the chemical agent.

[0036] 4. The 360° automatic rotating nozzle realizes automatic rotation through the thrust generated during the spraying of the cleaning agent, and then evenly sprays the cleaning agent onto the opposite side of the two ionization groups, further increasing the cleaning efficiency of the water washing unit for the ionization unit.

[0037] 5. Through the setting of the oil-water separator, the equipment can effectively process the oil-containing sewage generated during the cleaning process, which not only helps environmental protection and reduces the environmental pollution caused by oil stains, but also the separated oil and water can be recycled and utilized respectively, improving the utilization rate of resources.

[0038] 6. The chemical agent tank, the hot water tank and the oil-water separator are all equipped with upper liquid level sensors and lower liquid level sensors. These sensors are connected to the control unit and can monitor the liquid level changes in real time. When the liquid level is too low, the control unit will automatically supplement the water source. When the liquid level is too high, it will automatically drain the water, thus ensuring the stable operation of the equipment and reducing the need for manual intervention.

[0039] 7. After each cleaning is completed, the equipment will automatically start the external fan for air drying treatment to ensure the dryness of key components such as the inside of the equipment, the ionization unit and the rotary spraying mechanism, which helps prevent equipment failures and performance degradation caused by moisture.

[0040] 8. According to the method for determining the number of high-pressure fan-shaped nozzles corresponding to each ion tank, the number of high-pressure fan-shaped nozzles that should be equipped for each ion tank can be accurately determined, ensuring that under the configuration of the minimum number of high-pressure fan-shaped nozzles, the side walls of the ion tank can be fully covered and the cleaning agent can be effectively sprayed. Description of the Drawings

[0041] Figure 1 It is a schematic structural diagram of an oil fume removal equipment with automatic water washing in the first embodiment;

[0042] Figure 2Side sectional view of an oil fume removal device with automatic water washing in Embodiment 1;

[0043] Figure 3 Cross-sectional view of an oil fume removal device with automatic water washing in Embodiment 1 in a top view state;

[0044] Figure 4 Front view and top view of the ionization unit and the water washing unit in Embodiment 1;

[0045] Figure 5 Structural schematic diagram of the control method of the lower housing in Embodiment 1;

[0046] Figure 6 Top view of the control method of the lower housing in Embodiment 1;

[0047] Figure 7 Schematic diagram of the water circuit system of the water washing unit in Embodiment 1;

[0048] Figure 8 Geometric schematic diagram of the method for determining the number of high-pressure fan nozzles corresponding to each ion box in Embodiment 2;

[0049] Figure 9 Flow chart of the control method of an oil fume removal device with automatic water washing in Embodiment 3. Detailed implementation manners

[0050] The following further describes the present invention patent with reference to the accompanying drawings.

[0051] Embodiment 1

[0052] As Figures 1-7 shown, the present invention patent discloses an oil fume removal device with automatic water washing, including: an ionization unit and a water washing unit are provided inside the housing, the housing includes an upper housing 1 and a lower housing 2, the ionization unit is installed inside the upper housing 1, an oil fume concentration sensor (not shown in the figure) is respectively installed on the output end side and the input end side of the ionization unit, the water washing unit includes a rotary spraying mechanism 3 provided inside the upper housing 1 and a supply mechanism 4 and a waste water recovery mechanism 21 provided inside the lower housing 2, the supply mechanism 4 is used to provide a cleaning agent for the rotary spraying mechanism 3, the waste water recovery mechanism 21 is hermetically installed at the top end of the lower housing 2, and the bottom end of its outer wall is communicated and penetrated with the drain pipe 22 of the lower housing 2, a control unit 5 is provided on the front side of the housing, air valves 11 are symmetrically provided on both outer walls of the upper housing 1, the air valve 11 on the output end side of the ionization unit is communicated with an external fan (not shown in the figure) through an oil fume pipe (not shown in the figure), the external fan is used to extract the oil fume generated in the kitchen and transport it to the ionization unit for filtration, the oil fume concentration sensor, the ionization unit, the water washing unit, the air valve 11 and the external fan are all signal-connected to the control unit 5;

[0053] Based on the above structure, Figures 1-7 As shown, when in use, the external fan is started and sends a signal to the control unit 5, the control unit 5 opens the two air valves 11, and starts the two sensors and the ionization unit. At the same time, the control unit 5 records the start-up time of the ionization unit, and the two sensors detect the oil fume concentration values on the output side and the input side of the ionization unit in real time, and compare the oil fume concentration difference on the output side and the input side of the ionization unit to determine the oil fume purification efficiency of the ionization unit. When the oil fume purification efficiency is ≤ the standard oil fume purification efficiency, the control unit 5 turns off the external fan, the air valve 11 and the ionization unit, and starts the water washing unit according to the current oil fume purification efficiency and the running time of the ionization unit. The supply mechanism 4 provides detergent to the rotary spray mechanism 3, and the rotary spray mechanism 3 sprays the detergent onto the ionization unit to clean the oil stains on the ionization unit. Due to gravity, the cleaned oil stains fall into the sump 21 with the detergent and are discharged to the outside of the shell through the drain pipe 22.

[0054] Further, such as Figures 2-4 As shown, the ionization unit includes two or more symmetrically arranged ionization groups 7, and the ionization group 7 is composed of one or more ion boxes arranged in parallel. The rotary spray mechanism 3 includes an electric rotary actuator 31, a shunt pipe 32 and a second shunt pipe 34 arranged between the ionization groups 7, which are mirror-symmetrically installed on the input end and the output end side of the ionization unit. One end of the first shunt pipe 32 is transmission-connected to the execution end of the electric rotary actuator 31 on the corresponding side, and the other end is rotationally connected to the inner wall of the upper shell 1. N high-pressure fan-shaped nozzles 33 are provided on the side of the first shunt pipe 32 close to the ionization unit, and the two ends of the second shunt pipe 34 are respectively fixedly connected to the inner walls of both sides of the upper shell 1, and the top of the second shunt pipe 34 is provided with a 360° automatic rotating nozzle 35 corresponding to the number of ion boxes in each group of ionization groups 7, and the electric rotary actuator 31 is signal-connected to the control unit 5;

[0055] Based on the above structure, Figures 2-4 As shown, when the water washing unit is running, the control unit 5 starts the electric rotary actuator 31, and the electric rotary actuator 31 drives the first shunt pipe 32 to rotate up and down, and the first shunt pipe 32 drives the execution end of the high-pressure fan-shaped nozzle 33 to rotate up and down, and at the same time, the supply mechanism 4 delivers the detergent to the first shunt pipe 32, and the detergent is evenly sprayed to both sides of the ionization unit through N high-pressure fan-shaped nozzles 33 to avoid the problem of cleaning dead corners;

[0056] At the same time, the high-pressure fan-shaped nozzle 33 makes its spray effect more uniform through its own fan-shaped nozzle design to achieve a higher spray coverage rate, and the high-pressure setting of the high-pressure fan-shaped nozzle 33 can provide a stronger spray force, which is very effective in removing stubborn oil stains;

[0057] Based on the above structure, Figures 3-4As shown, when the water washing unit is operating, the supply mechanism 4 conveys the cleaning agent to the second shunt pipe 34, and through the thrust generated during the spraying of the cleaning agent by the N 360° automatic rotating nozzles 35, the nozzles achieve automatic rotation, and then evenly spray the cleaning agent onto the opposite sides of the two ionization groups 7, so as to further improve the cleaning efficiency of the water washing unit for the ionization unit.

[0058] Preferably, as Figure 4 shown, each 360° automatic rotating nozzle 35 is arranged between the two ion boxes, and the output end of the 360° automatic rotating nozzle 35 corresponds to the middle position of the ion box, so that the cleaning agent sprayed by the 360° automatic rotating nozzle 35 can be evenly sprayed onto the opposite sides of the two ion boxes, thereby achieving covering cleaning.

[0059] Furthermore, as Figure 2 、 5 -7 shows, the supply mechanism 4 includes a medicine box 41, a hot water box 42, a transfer box 43 and a water pump 44. The transfer box 43 is respectively communicated with the first shunt pipe 32 and the second shunt pipe 34 through a shunt pipeline 431. The transfer box 43 is respectively communicated with the output end of the medicine box 41 and the output end of the hot water box 42 through a first conveying pipeline 411 and a second conveying pipeline 421. The water pump 44 is installed on the main pipeline of the shunt pipeline 431. A water conveying valve 441, a medicine valve 412 and a hot water valve 422 are respectively arranged on the main pipeline of the shunt pipeline 431 between the water pump 44 and the rotary spraying mechanism 3, on the first conveying pipeline 411 and on the second conveying pipeline 421. The water pump 44, the water conveying valve 441, the medicine valve 412 and the hot water valve 422 are all connected to the control unit 5 in a signal connection;

[0060] Based on the above structure, as Figure 2 、 5 -7 shows, when the water washing unit is operating, the control unit 5 starts the water pump 44 and controls the opening of any one or any two of the water conveying valve 441, the medicine valve 412 and the hot water valve 422, so as to provide different cleaning modes for the water washing unit.

[0061] Preferably, as Figures 5-6 shown, in order to facilitate the replenishment of the medicine to the medicine box, a backflow funnel sheet metal 412 for adding medicine is rotatably arranged on the front side of the top of the medicine box 41. When replenishing the medicine, rotate the input end of the backflow funnel sheet metal 412 to the outside of the lower housing 2 and replenish the medicine. After the medicine replenishment is completed, rotate the backflow funnel sheet metal 412 back into the lower housing 2.

[0062] Furthermore, the water pressure is made constant by setting the water pump 44 as a variable frequency constant pressure water pump.

[0063] Furthermore, as Figure 2 、 3As shown in FIGS. 6 and 7, the conventional market electrostatic oil fume removal equipment with a water washing function has limited adaptability to extreme oil fumes. Under extreme cooking conditions (such as a large amount of frying or long-term high-temperature cooking), the purification effect of the electrostatic filter may decrease, and it needs to be frequently cleaned, which not only increases the water consumption cost and environmental protection pressure, but also greatly increases the maintenance workload. To solve the above problems, an oil-water separator 6 is installed at the rear side of the lower housing 2. The sewage inlet 61 of the oil-water separator 6 is connected to the output end of the drain pipe 22 through a drain pipeline 221. The water circulation interface 62 of the oil-water separator 6 is connected to the transfer tank 43 through a circulation pipeline 621. An oil drain port 63 and a drain port 64 are also provided on the oil-water separator 6. Check valves 222, circulation valves 622, oil drain valves 631, and drain valves 641 are provided on the drain pipeline 221, the circulation pipeline 621, the oil drain port 63, and the drain port 64. The check valve 222, the circulation valve 622, the oil drain valve 631, and the drain valve 641 are all signal-connected to the control unit 5;

[0064] Based on the above structure, as Figure 2 、 3 and 7 show, when the water washing unit is running, the control unit 5 opens the check valve 222 and the oil drain valve 631, and at the same time opens either the circulation valve 622 or the drain valve 641 according to the cleaning mode.

[0065] Furthermore, as Figure 7 shown, in order to facilitate the replenishment of water in the chemical agent tank 41 and the hot water tank 42, and in order to increase the cleaning mode, the circulation valve 622 is an electromagnetic three-way valve, and one end of the electromagnetic three-way valve is connected to an external water source;

[0066] Based on the above structure, as Figure 7 shown, when the water in the chemical agent tank 41 or the hot water tank 42 needs to be replenished, the control unit 5 controls the electromagnetic three-way valve to connect the external water source and the transfer tank 43, and at the same time opens either the chemical agent valve 412 or the hot water valve 422. The external water source replenishes water to the chemical agent tank 41 or the hot water tank 42 through the transfer tank 43 and the first conveying pipeline 411 or the second conveying pipeline 421;

[0067] At the same time, the control unit 5 starts the water pump 44, controls the electromagnetic three-way valve to connect the external water source and the transfer tank 43, and opens / closes the chemical agent valve 412 according to the cleaning mode, so as to provide different cleaning modes for the cleaning mode.

[0068] Preferably, the chemical agent tank 41, the hot water tank 42, and the oil-water separator 6 are all provided with an upper liquid level sensor (not shown in the figure) and a lower liquid level sensor (not shown in the figure) that are signal-connected to the control unit 5. When the lower liquid level sensors of the chemical agent tank 41 and the hot water tank 42 are triggered, the control unit 5 controls the electromagnetic three-way valve to connect the external water source and the transfer tank 43, and opens the chemical agent valve 412 or the hot water valve 422 according to the demand, so as to supplement the water in the chemical agent tank 41 and the hot water tank 42. When the upper liquid level sensors of the chemical agent tank 41 or the hot water tank 42 are triggered, the control unit 5 controls the electromagnetic three-way valve to close the external water source and the transfer tank 43, and closes the chemical agent valve 412 or the hot water valve 422 according to the demand. When the upper liquid level sensor of the oil-water separator 6 is triggered, the control unit 5 controls the drain valve 641 to open, and when the lower liquid level sensor of the oil-water separator 6 is triggered, the control unit 5 controls the drain valve 641 to close.

[0069] Embodiment 2

[0070] As shown in 8, the method for determining the number of high-pressure fan-shaped nozzles 33 corresponding to each ion tank in Embodiment 2 is as follows: Define the included angle of the water curtain ejected by the high-pressure fan-shaped nozzle 33 as 2α, the total length of the ion tank as L, the minimum distance from the high-pressure fan-shaped nozzle 33 (output end) to the ion tank as X, and the number of high-pressure fan-shaped nozzles 33 as n. The formula for the number of nozzles is:

[0071]

[0072] Specifically, the derivation process of the number of high-pressure fan-shaped nozzles 33 is as follows:

[0073] 1) Water curtain half angle: The included angle of the water curtain is defined as 2α, so the included angle between the unilateral water curtain and the center line is α (half angle);

[0074] 2) Definition of nozzle spacing: The total length of the ion tank is defined as L, and the number of high-pressure fan-shaped nozzles 33 is n. Then the adjacent nozzle spacing is:

[0075]

[0076] (Each high-pressure fan-shaped nozzle 33 covers both the left and right sides, and the total spacing number is 2n, but the actual number of high-pressure fan-shaped nozzles 33 is n. Therefore, the unilateral spacing is );

[0077] 3) Geometric relationship: According to the trigonometric function relationship, the minimum distance X from the output end of the high-pressure fan-shaped nozzle 33 to the ion tank needs to satisfy:

[0078] X = D·cosα

[0079] ( After arrangement, X = D·cotα);

[0080] 4) Simultaneous solution: Substitute into X = D·cosα, we get:

[0081]

[0082] Solve the equation to obtain the quantity of the high-pressure fan-shaped nozzles 33:

[0083] Based on the above, according to the total length of the ion box, the minimum distance X from the output end of the high-pressure fan-shaped nozzle 33 to the ion box, and the water curtain angle sprayed by the high-pressure fan-shaped nozzle 33, the calculation formula for the number of nozzles can be derived. Through the formula, the number of high-pressure fan-shaped nozzles 33 that should be equipped for each ion box can be accurately determined, ensuring full coverage of the side wall of the ion box and effective spraying of the cleaning agent with the minimum number of high-pressure fan-shaped nozzles 33 configured.

[0084] Embodiment III

[0085] As Figure 8 shown, Embodiment III is a control method for an oil fume removal device with automatic water washing based on Embodiment I, including the following steps:

[0086] S1: The external fan is started, and a signal is sent to the control unit 5. The control unit 5 starts the air valve 11, the ionization unit, and two sensors, and records the operation duration of the electrostatic unit;

[0087] S2: The two sensors detect the oil fume concentration values on the output side and the input side of the ionization unit in real time and feedback them to the control unit 5;

[0088] S3: The control unit 5 determines the oil fume purification efficiency of the ionization unit according to the real-time oil fume concentration values respectively fed back by the two sensors;

[0089] The oil fume purification efficiency is the oil fume concentration value on the output side of the ionization unit / the oil fume concentration value on the input side of the ionization unit;

[0090] S4: When the oil fume purification efficiency ≤ the standard oil fume purification efficiency, the control unit 5 starts the intelligent cleaning mode according to the current oil fume purification efficiency and the operation duration of the ionization unit;

[0091] The intelligent cleaning mode is that the control unit 5 turns off the external fan, the air valve 11, and the ionization unit, and starts the water washing unit;

[0092] The intelligent cleaning mode is that the control unit turns off the external fan, the air valve, and the ionization unit, and starts the water washing unit;

[0093] The starting criteria for the fast washing mode, the energy-saving washing mode, the standard washing mode, and the super strong washing mode are respectively:

[0094] Quick Wash Mode: The operating duration of the ionization unit ≤ 55 hours, and the purification efficiency ≤ 90%;

[0095] Standard Wash Mode: The operating duration of the ionization unit ≥ 110 hours, and the purification efficiency ≤ 80%;

[0096] Super Strong Wash Mode: The operating duration of the ionization unit ≥ 110 hours, and the purification efficiency ≤ 75%;

[0097] Energy Saving Wash Mode: After the Standard Wash Mode and the Super Strong Wash Mode are completed, 55 hours < the operating duration of the ionization unit ≤ 110 hours, and the purification efficiency ≤ 85;

[0098] The operating modes of the Quick Wash Mode, the Energy Saving Wash Mode, the Standard Wash Mode, and the Super Strong Wash Mode are respectively:

[0099] Quick Wash Mode: The control unit 5 starts the water pump 44, controls the water supply valve 441 to open, and at the same time controls the circulation valve 622 to connect the external water source and the transfer tank 43. The water pump 44 pumps the external water source and conveys it to the rotary spray mechanism 3 to perform cold water spraying on the ionization unit. After the cold water spraying is completed, the control unit 5 closes the water washing unit, and turns on the external fan and the air valve 11. The external fan conveys the external wind energy to perform air drying treatment on the inside of the upper housing 1, the ionization unit, and the rotary spray mechanism 3;

[0100] Standard Wash Mode: The control unit 5 starts the water pump 44, controls the water supply valve 441 and the chemical agent valve 412 to open, and at the same time controls the circulation valve 622 to connect the external water source and the transfer tank 43. The water pump 44 pumps the external water source and the chemical agent in the chemical agent tank 41 and conveys it to the rotary spray mechanism 3 to perform cold water chemical agent spraying on the ionization unit. After the cold water chemical agent spraying is completed, the control unit 5 closes the chemical agent valve 412. The water pump 44 pumps the external water source and conveys it to the rotary spray mechanism 3 to clean the residual chemical agent on the ionization unit. After the cleaning is completed, the control unit 5 closes the water washing unit, and turns on the external fan and the air valve 11. The external fan conveys the external wind energy to perform air drying treatment on the inside of the upper housing 1, the ionization unit, and the rotary spray mechanism 3;

[0101] Super Strong Wash Mode: The control unit 5 starts the water pump 44, controls the water supply valve 441, the hot water valve 422, and the chemical agent valve 412. The water pump 44 pumps the hot water in the hot water tank 42 and the chemical agent in the chemical agent tank 41 to perform hot water chemical agent spraying on the ionization unit. After the hot water chemical agent spraying is completed, the control unit 5 closes the chemical agent valve 412 and the hot water valve 412. At the same time, it controls the circulation valve 622 to connect the external water source and the transfer tank 43. The water pump 44 pumps the external water source and conveys it to the rotary spray mechanism 3 to clean the residual chemical agent on the ionization unit. After the cleaning is completed, the control unit 5 closes the water washing unit, and turns on the external fan and the air valve 11. The external fan conveys the external wind energy to perform air drying treatment on the inside of the upper housing 1, the ionization unit, and the rotary spray mechanism 3;

[0102] Energy-saving washing mode: The control unit 5 starts the water pump 44, controls the water delivery valve 441 to open, and at the same time controls the circulation valve 622 to connect the oil-water separator 6 and the transfer tank 43. The water pump 44 pumps the medicated water separated in the oil-water separator 6 to spray the ionization unit. After the spraying is completed, the control unit 5 controls the circulation valve 622 to close the connection between the oil-water separator 6 and the transfer tank 43, and controls the circulation valve 622 to connect the external water source and the transfer tank 43. The water pump 44 pumps the external water source and conveys it to the rotary spraying mechanism 3 to clean the medicated water separated in the oil-water separator 6 remaining on the ionization unit. After the cleaning is completed, the control unit 5 shuts down the water washing unit and opens the external fan and the air valve 11. The external fan conveys external wind energy to air-dry the interior of the upper shell 1, the ionization unit, and the rotary spraying mechanism 3.

[0103] The above is only a preferred specific embodiment of the present invention for patent, but the protection scope of the present invention for patent is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention for patent, according to the technical solution and inventive concept of the present invention for patent, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention for patent.

Claims

1. An oil fume removal device with automatic water washing, comprising a housing, wherein an ionization unit and a water washing unit are arranged in the housing, and it is characterized in that: The housing comprises an upper housing (1) and a lower housing (2); the ionization unit is installed in the upper housing (1); oil fume concentration sensors are installed at the output end side and the input end side of the ionization unit respectively; the water washing unit comprises a rotary spraying mechanism (3) arranged in the upper housing (1) and a supply mechanism (4) and a waste water recovery mechanism (21) arranged in the lower housing (2); the supply mechanism (4) is used to provide a cleaning agent to the rotary spraying mechanism (3); the waste water recovery mechanism (21) is sealed and installed at the top end of the lower housing (2); the bottom end of the outer wall of the waste water recovery mechanism is connected and penetrated with the drain pipe (22) of the lower housing (2); and a control unit (5) is arranged at the front side of the housing; Wherein, air valves (11) are symmetrically arranged on the outer walls of both sides of the upper shell (1); the air valve (11) located at the output end side of the ionization unit is connected to an external fan through an oil fume pipe; the external fan is used to extract the oil fume generated in the kitchen and transport it to the ionization unit for filtration; the oil fume concentration sensor, the ionization unit, the water washing unit, the air valve (11) and the external fan are all connected to the control unit (5) by signal.

2. The oil fume removal device with automatic water washing according to claim 1, wherein: The ionization unit comprises two or more symmetrically arranged ionization groups (7), the ionization group (7) being composed of one or more ion boxes arranged in parallel, the rotary spray mechanism (3) comprising an electric rotary actuator (31) mounted on the input end and the output end of the ionization unit in a mirror-symmetrical manner, a shunt pipe (32) and a second shunt pipe (34) arranged between the ionization groups (7), one end of the first shunt pipe (32) being transmission-connected to the execution end of the electric rotary actuator (31) on the corresponding side, and the other end being rotationally connected to the inner wall of the upper shell (1), the first shunt pipe (32) being provided with N high-pressure fan-shaped nozzles (33) on one side close to the ionization unit, the two ends of the second shunt pipe (34) being respectively fixedly connected to the inner walls of both sides of the upper shell (1), and the top end of the second shunt pipe (34) being provided with a 360° automatic rotary nozzle (35) corresponding to the number of ion boxes in each ionization group (7), and the electric rotary actuator (31) being signal-connected to the control unit (5).

3. The oil fume removal device with automatic water washing according to claim 2, characterized in that: The supply mechanism (4) includes a medicine tank (41), a hot water tank (42), a transfer tank (43) and a water pump (44). The transfer tank (43) is communicated with the first shunt pipe (32) and the second shunt pipe (34) respectively through a shunt pipeline (431). The transfer tank (43) is communicated with the output end of the medicine tank (41) and the output end of the hot water tank (42) through a first conveying pipeline (411) and a second conveying pipeline (421) respectively. The water pump (44) is installed on the main pipeline of the shunt pipeline (431). Water supply valves (441), medicine valves (412) and hot water valves (422) are respectively arranged on the main pipeline of the shunt pipeline (431) between the water pump (44) and the rotary spraying mechanism (3), on the first conveying pipeline (411) and on the second conveying pipeline (421). The water pump (44), the water supply valve (441), the medicine valve (412) and the hot water valve (422) are all connected with the control unit (5) in a signal connection.

4. The oil fume removal device with automatic water washing according to claim 3, characterized in that: The water pump (44) is a variable frequency constant pressure water pump.

5. The oil fume removal device with automatic water washing according to claim 3, characterized in that: An oil-water separator (6) is installed at the rear side of the lower shell (2). The sewage inlet (61) of the oil-water separator (6) is communicated with the output end of the drain pipe (22) through a drain pipeline (221). The water circulation interface (62) of the oil-water separator (6) is communicated with the transfer tank (43) through a circulation pipeline (621). An oil discharge port (63) and a water discharge port (64) are also arranged on the oil-water separator (6). Check valves (222), circulation valves (622), oil discharge valves (631) and water discharge valves (641) are respectively arranged on the drain pipeline (221), the circulation pipeline (621), the oil discharge port (63) and the water discharge port (64). The check valve (222), the circulation valve (622), the oil discharge valve (631) and the water discharge valve (641) are all connected with the control unit (5) in a signal connection.

6. The oil fume removal device with automatic water washing according to claim 5, characterized in that: The circulation valve (622) is an electromagnetic three-way valve, and one end of the electromagnetic three-way valve is connected with an external water source.

7. The oil fume removal device with automatic water washing according to claim 2, characterized in that: The method for determining the number of high-pressure fan nozzles (33) corresponding to each ion box is as follows: Define the included angle of the water curtain ejected by the high-pressure fan nozzle (33) as 2α, the total length of the ion box as L, the minimum distance between the high-pressure fan nozzle (33) and the ion box as X, and the number of high-pressure fan nozzles (33) as n. The formula for the number of high-pressure fan nozzles (33) is:

8. A control method for an oil fume removal device with automatic water washing, characterized in that: It includes the following steps: S1: The external fan is started, and a signal is sent to the control unit (5). The control unit (5) starts the air valve (11), the ionization unit and two sensors, and records the operation duration of the electrostatic unit. S2: The two sensors detect the oil fume concentration values at the output end side and the input end side of the ionization unit in real time and feed them back to the control unit (5). S3: The control unit (5) judges the oil fume purification efficiency of the ionization unit according to the real-time oil fume concentration values respectively fed back by the two sensors. The oil fume purification efficiency is the oil fume concentration value at the output end side of the ionization unit / the oil fume concentration value at the input end side of the ionization unit; S4: When the fume purification efficiency ≤ the standard fume purification efficiency, the control unit (5) starts the intelligent cleaning mode according to the current fume purification efficiency and the operation duration of the ionization unit; The intelligent cleaning mode is that the control unit (5) turns off the external fan, the air valve (11) and the ionization unit, and starts the water washing unit.

9. The control method of an oil fume removal device with automatic water washing according to claim 8, characterized in that: The control unit (5) in step S4 starts the intelligent cleaning mode according to the current fume purification efficiency and the operation duration of the ionization unit, including the quick wash mode, the energy-saving wash mode, the standard wash mode and the super strong wash mode. The start criteria for the quick wash mode, the energy-saving wash mode, the standard wash mode and the super strong wash mode are respectively: The quick wash mode: the operation duration of the ionization unit ≤ 55 hours, and the purification efficiency ≤ 90%; The standard wash mode: the operation duration of the ionization unit ≥ 110 hours, and the purification efficiency ≤ 80%; The super strong wash mode: the operation duration of the ionization unit ≥ 110 hours, and the purification efficiency ≤ 75%. The energy-saving wash mode: after the standard wash mode and the super strong wash mode are completed, 55 hours < the operation duration of the ionization unit ≤ 110 hours, and the purification efficiency ≤ 85.

10. The control method of an oil fume removal device with automatic water washing according to claim 9, characterized in that: The operation modes of the quick wash mode, the energy-saving wash mode, the standard wash mode and the super strong wash mode are respectively: The quick wash mode: the control unit (5) starts the water pump (44), controls the water delivery valve (441) to open, and at the same time controls the circulation valve (622) to connect the external water source and the transfer tank (43). The water pump (44) pumps the external water source and delivers it to the rotary spraying mechanism (3) to spray cold water on the ionization unit. After the cold water spraying is completed, the control unit (5) turns off the water washing unit, and turns on the external fan and the air valve (11). The external fan delivers external wind energy to dry the inside of the upper shell (1), the ionization unit and the rotary spraying mechanism (3); The standard wash mode: the control unit (5) starts the water pump (44), controls the water delivery valve (441) and the chemical agent valve (412) to open, and at the same time controls the circulation valve (622) to connect the external water source and the transfer tank (43). The water pump (44) pumps the external water source and the chemical agent in the chemical agent tank (41) and delivers it to the rotary spraying mechanism (3) to spray cold water with chemical agent on the ionization unit. After the cold water with chemical agent spraying is completed, the control unit (5) turns off the chemical agent valve (412). The water pump (44) pumps the external water source and delivers it to the rotary spraying mechanism (3) to clean the residual chemical agent on the ionization unit. After the cleaning is completed, the control unit (5) turns off the water washing unit, and turns on the external fan and the air valve (11). The external fan delivers external wind energy to dry the inside of the upper shell (1), the ionization unit and the rotary spraying mechanism (3); The super strong washing mode: The control unit (5) starts the water pump (44) and controls the water supply valve (441), the hot water valve (422) and the chemical agent valve (412). The water pump (44) extracts the hot water in the hot water tank (42) and the chemical agent in the chemical agent tank (41) to perform hot water and chemical agent spraying on the ionization unit. After the hot water and chemical agent spraying is completed, the control unit (5) closes the chemical agent valve (412) and the hot water valve (412). At the same time, it controls the circulation valve (622) to connect the external water source and the transfer tank (43). The water pump (44) extracts the external water source and transports it to the rotary spraying mechanism (3) to clean the chemical agent remaining on the ionization unit. After the cleaning is completed, the control unit (5) shuts down the water washing unit and turns on the external fan and the air valve (11). The external fan transports external wind energy to dry the interior of the upper housing (1), the ionization unit and the rotary spraying mechanism (3). The energy-saving washing mode: The control unit (5) starts the water pump (44) and controls the opening of the water supply valve (441). At the same time, it controls the circulation valve (622) to connect the oil-water separator (6) and the transfer tank (43). The water pump (44) extracts the chemical agent-containing water separated in the oil-water separator (6) to spray on the ionization unit. After the spraying is completed, the control unit (5) controls the circulation valve (622) to close the connection between the oil-water separator (6) and the transfer tank (43), and controls the circulation valve (622) to connect the external water source and the transfer tank (43). The water pump (44) extracts the external water source and transports it to the rotary spraying mechanism (3) to clean the chemical agent-containing water separated in the oil-water separator (6) remaining on the ionization unit. After the cleaning is completed, the control unit (5) shuts down the water washing unit and turns on the external fan and the air valve (11). The external fan transports external wind energy to dry the interior of the upper housing (1), the ionization unit and the rotary spraying mechanism (3).

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