An environmentally friendly method and equipment for condensing kitchen fumes.

Abstract

This invention discloses a commercial kitchen fume condensation and environmental protection method and equipment, including a stove body with several cooktops, a side-suction cabinet, and a cleaning device. One side of the side-suction cabinet is close to the cooktops, and the other side is away from the cooktops. The side of the side-suction cabinet close to the cooktops has several refrigerant plates corresponding to the cooktops, each containing an evaporator. Several fans corresponding to the refrigerant plates are installed inside the side-suction cabinet. One side of each fan is connected to the side of the side-suction cabinet away from the cooktops, and the other side of each fan has an air inlet corresponding to a refrigerant plate. The stove body contains a compressor and a water tank, with a condenser inside the water tank. The evaporator, compressor, and condenser are connected via refrigerant piping. An air curtain box is located at the top of the side-suction cabinet, and each fan has an air outlet connected to the air curtain box. The stove body is located at the bottom of the side-suction cabinet, and the cleaning device is located between the refrigerant plates and the cooktops. The beneficial effect of this invention is: highly efficient removal of cooking fumes.

Description

Technical Field

[0001] This invention relates to the field of kitchen fume technology, and in particular to an environmentally friendly method and equipment for condensing commercial kitchen fumes. Background Technology

[0002] With the improvement of people's living standards and living conditions, range hoods (oil fume purification equipment) have become essential kitchen appliances. The function of a range hood is to extract heat, fumes, and steam from the kitchen to the outside. However, current technology often encounters several problems with improper fume handling: the extracted fumes need to pass through a centrifugal fan, and the high temperature of the fumes and steam can affect the lifespan of the centrifugal fan. Furthermore, because the range hood operates in a fume-filled environment, its interior becomes covered in fumes, severely impacting its efficiency and appearance, requiring regular cleaning. The fumes exhausted outdoors pollute the atmosphere. Additionally, the stovetop generates a lot of heat during cooking, causing discomfort, especially in commercial kitchens where these problems are more pronounced. Summary of the Invention

[0003] The present invention aims to overcome the problems of improper oil fume treatment in the prior art and provides an environmentally friendly method and equipment for condensing commercial kitchen oil fumes that can effectively treat commercial kitchen oil fumes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An environmentally friendly method for condensing cooking fumes in commercial kitchens includes the following steps:

[0006] Step 1: Start the equipment. The smoke sensor detects the smoke concentration and transmits the data to the control system.

[0007] Step 2: Determine the operating parameters of fan 1 based on the smoke concentration;

[0008] Step 3: After filtration, the oil fume is detected by an oil fume detector at one of the air outlets of the fan to check whether the gas meets the oil fume emission standards, and the data is transmitted to the control system, which then determines whether the filtered oil fume needs to be filtered again.

[0009] Step four: Discharge the gas through the air outlet pipe to form an air curtain around the stove.

[0010] This commercial kitchen fume condensation and environmental protection equipment monitors the fume concentration in real time using a fume sensor. The control system adjusts the operating speed of the first fan based on the fume concentration, effectively condensing and filtering the fumes while achieving energy conservation and environmental protection. The fume detector detects the gas at the air outlet, ensuring that only gas meeting emission standards is emitted, preventing environmental pollution. The fumes are filtered before being transported by the first fan, extending its lifespan. The emission-compliant gas is then discharged through the exhaust duct to form an air curtain around the stove, effectively preventing fumes generated inside the air curtain from escaping. This allows the first fan to more efficiently remove fumes and isolates the stove from the rest of the kitchen space, preventing a rapid rise in stove temperature that could cause discomfort. This effectively eliminates fume pollution in commercial kitchens.

[0011] Preferably, in step one, the smoke sensor is set to three smoke concentration values: low, medium, and high. By setting different smoke concentration values ​​for the smoke sensor, the operator can facilitate the control system in controlling the operating speed of fan one according to the set values.

[0012] Preferably, in step two, when the smoke sensor detects data within a low concentration range, the fan is controlled to operate at a low speed; when the smoke sensor detects data between a low and medium concentration range, the fan is controlled to operate at a medium speed; when the smoke sensor detects data between a medium and high concentration range, the fan is controlled to operate at a high speed; and when the smoke sensor detects data exceeding a high concentration range, an alarm is triggered and the fan stops operating to remind the operator to inspect the equipment. The control system adjusts the fan speed based on different smoke concentrations, effectively filtering oil fumes while achieving energy conservation and environmental protection.

[0013] Preferably, in step three, the fumes are cooled by the refrigerant plate and adhere to the refrigerant plate to form oil. The gas in the fumes is first deodorized by a deodorizing filter, then filtered to remove impurities by a dust filter, and finally transported by fan one. The fume detector detects the gas at one outlet of fan one. In step four, when the detected data meets the emission standards, the control system controls the gas to be discharged through the exhaust pipe to form an air curtain around the stove through a three-way control valve. If the detected data does not meet the emission standards, the control system controls the gas to be discharged into the alkaline water tank through the three-way control valve for further filtration, and the filtered gas is then transported by fan two through the exhaust pipe to form an air curtain around the stove. When oil fumes are cooled by the refrigerant plate, they form an oily residue that adheres to the plate, effectively removing grease and preventing damage to the fan from high-temperature fumes. The degreased gas is then further filtered through a deodorizing filter and a dust filter before being transported by the fan, providing protection and extending its lifespan. Gas meeting emission standards is then discharged through the exhaust duct to form an air curtain around the stove, effectively preventing fumes generated inside the curtain from escaping. This allows the fan to more efficiently remove fumes and isolates the stove from the rest of the kitchen, preventing a rapid temperature rise that could cause discomfort. This effectively handles fumes in commercial kitchens. The deodorizing filter can be a UV photolysis device.

[0014] This invention also provides a commercial kitchen fume condensation and environmental protection device, comprising a stove body with several cooktops, a side-suction cabinet, and a cleaning device. One side of the side-suction cabinet is close to the cooktops, and the other side is away from the cooktops. The side of the side-suction cabinet close to the cooktops has several refrigerant plates corresponding to the cooktops, and each refrigerant plate contains an evaporator. The side-suction cabinet contains several fans corresponding to the refrigerant plates, with one side of each fan connected to the side of the side-suction cabinet away from the cooktops. The other side of each fan has an air inlet corresponding to the position of the refrigerant plates. The stove body contains a compressor and a water tank, and the water tank contains a condenser. The evaporator, compressor, and condenser are connected sequentially via refrigerant piping. An air curtain box is located at the top of the side-suction cabinet, and each fan has an air outlet connected to the air curtain box via the air outlet. The stove body is located at the bottom of the side-suction cabinet, and the cleaning device is located between the refrigerant plates and the cooktops.

[0015] The cooktop has several cooktops, a side-suction cabinet, and a cleaning device. One side of the side-suction cabinet is close to the cooktop, and the other side is away from the cooktop. On the side of the side-suction cabinet close to the cooktop, there are several refrigerant plates corresponding to the cooktops. An evaporator is installed inside each refrigerant plate. Several fans corresponding to the refrigerant plates are installed inside the side-suction cabinet. One side of each fan is connected to the side of the side-suction cabinet away from the cooktop, and the other side of each fan has an air inlet corresponding to the position of the refrigerant plate. The cooktop contains a compressor and a water tank. A condenser is installed inside the water tank. The evaporator, compressor, and condenser are connected in sequence through refrigerant piping. An air curtain box is installed on the top of the side-suction cabinet. Each fan has an air outlet, which is connected to the air curtain box. The cooktop is located at the bottom of the side-suction cabinet, and the cleaning device is located between the refrigerant plates and the cooktops. Each refrigerant plate and fan individually controls the fumes generated by the corresponding stove. The fumes first pass through the refrigerant plate, which has an internal evaporator. Due to the low temperature of the refrigerant plate, the fumes cool and adhere to it, forming an oily residue. This residue is removed by a cleaning device to prevent oil buildup and extend the lifespan of the refrigerant plate. The condenser dissipates heat, and the water in the tank absorbs the heat, making it usable for kitchen use. Simultaneously, the gas temperature drops after being filtered by the refrigerant plate. When the gas is discharged through the air curtain box around the stove, it effectively prevents the fumes generated by the stove inside from escaping. This allows the fan to more efficiently remove fumes and also helps to isolate the stove from the rest of the kitchen, preventing a rapid rise in kitchen temperature that could cause discomfort. This effectively manages the fumes in commercial kitchens.

[0016] Preferably, the side-suction cabinet is equipped with an odor-removing filter and a dust-removing filter, both of which are detachably connected to the side-suction cabinet. The odor-removing filter is located between the refrigerant plate and the dust-removing filter, while the dust-removing filter is located between the odor-removing filter and the air inlet. The odor-removing filter helps absorb odors; the dust-removing filter helps absorb particulate matter such as smoke, thus purifying the air at the air inlet of the fan, protecting the fan and extending its service life.

[0017] Preferably, the cleaning device includes a roller wrapped with oil-absorbing cotton, which is in contact with the surface of the refrigerant plate. The length of the oil-absorbing cotton is greater than or equal to the sum of the lengths of several refrigerant plates. A pressure sensor is installed on the stove body between the oil-absorbing cotton and the stove body. A gear is provided at the end of the roller, and a rack that meshes with the gear is provided on the side of the side suction cabinet. The length of the rack is greater than or equal to the width of the refrigerant plate. The angle between the rack and the surface of the stove body is the same as the angle between the refrigerant plate and the surface of the stove body. Ball bearings are provided at both ends of the roller, and the gear is located between the ball bearings and the oil-absorbing cotton. A moving block is connected to the roller through the ball bearings. Electric cylinders are provided on both sides of the stove body. The output end of the electric cylinder is fixedly connected to the moving block and is parallel to the rack. This design facilitates the movement of the moving block along the length of the rack by the electric cylinder. The roller rotates through the meshing of the gear and rack, and the oil-absorbing cotton cleans the surface of the refrigerant plate, preventing oil from accumulating on the refrigerant plate and affecting its use, thus extending the service life of the refrigerant plate. At the same time, since the weight of the oil-absorbing cotton increases after absorbing oil, the pressure sensor sets a pressure value. When the oil-absorbing cotton reaches the set pressure value, the control system issues a command to require the operator to replace the oil-absorbing cotton. This effectively prevents oil leakage due to oversaturation of the oil-absorbing cotton, which is beneficial for cleaning the stove and extending the service life of the equipment.

[0018] Preferably, the stove body includes a filter chamber, a second fan, and a circulation pump. The filter chamber contains an alkaline water tank and a filter screen. The alkaline water tank is located below the filter screen, and a water pipe is located above the filter screen. Several nozzles are installed on the water pipe. The bottom of the alkaline water tank has a liquid outlet and a liquid level sensor. The filter screen is located above the top of the alkaline water tank. One end of the circulation pump passes through the filter chamber and is connected to the liquid outlet. The other end of the circulation pump is connected to a connecting pipe. One end of the water pipe is sealed, and the other end of the water pipe passes through the filter chamber and is connected to the connecting pipe. The second fan has a second air inlet and a second air outlet. The second air inlet has an air inlet pipe with a one-way valve. One end of the air inlet pipe is connected to the second air inlet, and the other end of the air inlet pipe is connected to the filter chamber through the one-way valve. The end of the air inlet pipe connected to the filter chamber is located above the filter screen. The second air outlet of the second fan has an air outlet pipe with a one-way valve. The second fan passes through the side suction cabinet and is connected to the air curtain box through the air outlet pipe. A liquid level sensor is used to detect the liquid level. When the liquid level is too low, the sensor transmits a signal to the control system, prompting the addition of alkali solution to ensure the normal operation of the alkali tank. The alkali tank contains alkali detergent, which is pumped to the water pipes via a circulation pump. The detergent is then sprayed and atomized through nozzles. Fan 1 is activated to extract the fumes and delivers gas that does not meet emission standards from the fan 1 outlet to the filter chamber. The alkali solution comes into contact with the gas containing fumes, and the contaminated mixture is filtered through a filter screen to remove impurities and returned to the alkali tank for reuse. The purified gas is then delivered to the air curtain box by Fan 2. New alkali solution is added to the alkali tank when it is depleted. The alkali solution absorbs most of the harmful substances in the fumes, converting them into clean air. This design ensures that the emitted gas is safer and will not harm human health or the environment.

[0019] Preferably, the air curtain box is rectangular in shape and equipped with several smoke sensors corresponding to the positions of the stove. The air curtain box contains three air curtain chambers. One edge of the air curtain box connects to the side-suction cabinet, and the three air curtain chambers are located at the remaining edges of the air curtain box. The top of each air curtain chamber is away from the stove, while the bottom is close to the stove. An exhaust vent is located at the bottom of each air curtain chamber. One end of the exhaust pipe is connected to each of the three air curtain chambers, and the other end is connected to the second exhaust vent on the second fan. This design facilitates the exhaust of purified air from the air curtain chambers through the exhaust vents, forming an air curtain that surrounds the stove, completely isolating the internal heat source and fumes from the outside air. The smoke sensors monitor the smoke concentration in real time, and the control system adjusts the operating speed of the first fan based on the smoke concentration.

[0020] Preferably, the air outlet of fan one is equipped with an air supply pipe. One end of the air supply pipe is connected to the air outlet of several fans one. The other end of the air supply pipe passes through the filter chamber and is located between the water pipe and the filter screen. An oil fume detector is installed inside the air supply pipe. A three-way control valve is installed on the air supply pipe. The oil fume detector is located at the end of the air supply pipe near the air outlet one. The three-way control valve is located at the end of the air supply pipe away from the air outlet one. A connecting pipe two is installed on the three-way control valve. One end of the connecting pipe two is connected to the three-way control valve. The other end of the connecting pipe two is connected to the air outlet pipe. A one-way valve two is located between the connecting pipe two and the air outlet two. The gas from the outlet of fan one is first tested by an oil fume detector. If the gas meets the oil fume emission standards, the control system controls the three-way control valve to connect the air supply pipe to the connecting pipe two, delivering the gas through the outlet pipe to each air curtain chamber, and then discharging it through the exhaust port to form an air curtain. At this time, the one-way valve two is closed to prevent gas from flowing back into fan two. If the gas does not meet the oil fume emission standards, the control system controls the three-way control valve to deliver the gas to the filter chamber for a second filtration. The one-way valves one and two are opened, and the gas, after the second filtration, is delivered through the outlet pipe to each air curtain chamber, and then discharging it through the exhaust port to form an air curtain. The structure is simple, and the oil fumes are filtered multiple times, achieving zero-pollution emissions.

[0021] The beneficial effects of this invention are: efficient removal of oil fumes; prevention of discomfort caused by a rapid rise in kitchen stove temperature; prevention of oil accumulation and extension of equipment lifespan; simple structure, with oil fumes filtered multiple times to achieve zero pollution emissions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 yes Figure 2 Sectional view of AA;

[0025] Figure 4 yes Figure 2 Sectional view of BB;

[0026] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0027] In the diagram: 1. Stove body, 2. Stove platform, 3. Side-suction cabinet, 4. Cleaning device, 5. Refrigerant plate, 6. Fan 1, 7. Air inlet pipe, 8. Compressor, 9. Water tank, 10. Condenser, 11. Air curtain box, 12. One-way valve 1, 13. Odor removal filter, 14. Dust removal filter, 15. Roller, 16. Oil-absorbing cotton, 17. Pressure sensor, 18. Gear, 19. Rack, 20. Ball bearing, 21. Moving block, 22. 23. Electric cylinder, 24. Filter chamber, 25. Fan 2, 26. Circulating pump, 27. Alkali water tank, 28. Filter screen, 29. Water pipe, 20. Nozzle, 30. Liquid outlet, 31. Liquid level sensor, 32. Connecting pipe 1, 33. Air outlet pipe, 34. One-way valve 2, 35. Smoke sensor, 36. Air curtain cavity, 37. Exhaust outlet, 38. Air supply pipe, 39. Oil fume detector, 40. Three-way control valve, 41. Connecting pipe 2. Detailed Implementation

[0028] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 , Figure 2 In the embodiments described above, a commercial kitchen oil fume condensation and environmental protection method includes the following steps:

[0030] Step 1: Start the equipment. The smoke sensor 35 detects the smoke concentration and transmits the data to the control system.

[0031] Step 2: Determine the operating parameters of fan 6 based on the smoke concentration;

[0032] Step 3: After filtration, the oil fume is detected by the oil fume detector 39 at the air outlet of fan 6 to see if the gas meets the oil fume emission standards, and the data is transmitted to the control system, which then determines whether the filtered oil fume needs to be filtered again.

[0033] Step four: The gas is discharged through the air outlet pipe 33 to form an air curtain around the stove body 1.

[0034] In step one, the smoke sensor 35 is set to three smoke concentration values: low concentration, medium concentration, and high concentration.

[0035] In step two, when the data detected by the smoke sensor 35 is within the low concentration range, the fan 6 is controlled to operate at a low speed; when the data detected by the smoke sensor 35 is between the low and medium concentration values, the fan 6 is controlled to operate at a medium speed; when the data detected by the smoke sensor 35 is between the medium and high concentration values, the fan 6 is controlled to operate at a high speed; when the data detected by the smoke sensor 35 is higher than the high concentration value, an alarm is triggered and the fan 6 is stopped to remind the operator to inspect the equipment.

[0036] like Figure 2 , Figure 3 As shown, in step three, the fumes are cooled by the refrigerant plate 5 and adhere to the refrigerant plate 5 to form oil. The gas in the fumes is first deodorized by the deodorizing filter 13, then filtered by the dust removal filter 14 to remove impurities, and finally transported by the fan 6. The fume detector 39 detects the gas at the outlet of the fan 6. In step four, when the detected data meets the emission standards, the control system controls the gas to be discharged through the exhaust pipe 33 to form an air curtain around the stove 1 through the three-way control valve 40. If the detected data does not meet the emission standards, the control system controls the gas to be discharged into the alkaline water tank 26 through the three-way control valve 40 for another filtration, and the filtered gas is transported by the fan 24 and discharged through the exhaust pipe 33 to form an air curtain around the stove 1.

[0037] like Figure 1 As shown, the present invention also provides a commercial kitchen fume condensation and environmental protection device, which includes a stove body 1, a plurality of stovetops 2, a side-suction cabinet 3, and a cleaning device 4 on the stove body 1. One side of the side-suction cabinet 3 is close to the stovetops 2, and the other side of the side-suction cabinet 3 is away from the stovetops 2. The side of the side-suction cabinet 3 close to the stovetops 2 is provided with a plurality of refrigerant plates 5 corresponding to the stovetops 2. An evaporator is provided inside the refrigerant plate 5, such as... Figure 2 , Figure 3 and Figure 4 As shown, the side-suction cabinet 3 is equipped with several fans 6 corresponding to the refrigerant plate 5. One side of the fan 6 is connected to the side of the side-suction cabinet 3 away from the stove 2. The other side of the fan 6 is equipped with an air inlet corresponding to the position of the refrigerant plate 5. The stove 1 is equipped with a compressor 8 and a water tank 9. The water tank 9 is equipped with a condenser 10. The evaporator, compressor 8 and condenser 10 are connected in sequence through refrigerant pipelines. The top of the side-suction cabinet 3 is equipped with an air curtain box 11. The fan 6 is equipped with an air outlet. The fan 6 is connected to the air curtain box 11 through the air outlet. The stove 1 is located at the bottom of the side-suction cabinet 3. The cleaning device 4 is located between the refrigerant plate 5 and the stove 2.

[0038] like Figure 2 As shown, the side-suction cabinet 3 is equipped with an odor removal filter 13 and a dust removal filter 14. Both the odor removal filter 13 and the dust removal filter 14 are detachably connected to the side-suction cabinet 3. The odor removal filter 13 is located between the refrigerant plate 5 and the dust removal filter 14, and the dust removal filter 14 is located between the odor removal filter 13 and the air inlet 1.

[0039] like Figure 2 , Figure 4As shown, the cleaning device 4 includes a roller 15, on which oil-absorbing cotton 16 is wrapped. The oil-absorbing cotton 16 is in contact with the surface of the refrigerant plate 5. The length of the oil-absorbing cotton 16 is greater than or equal to the sum of the lengths of several refrigerant plates 5. A pressure sensor 17 is provided on the stove body 1, and the pressure sensor 17 is installed between the oil-absorbing cotton 16 and the stove body 1. Figure 2 As shown, the end of the roller 15 is provided with a gear 18, and the side of the side suction cabinet 3 is provided with a rack 19 that meshes with the gear 18. The length of the rack 19 is greater than or equal to the width of the refrigerant plate 5, and the angle between the rack 19 and the surface of the stove body 1 is the same as the angle between the refrigerant plate 5 and the surface of the stove body 1. Figure 4 , Figure 5 As shown, both ends of the roller 15 are provided with ball bearings 20, the gear 18 is located between the ball bearings 20 and the oil-absorbing cotton 16, the roller 15 is connected to the moving block 21 through the ball bearings 20, and both sides of the stove body 1 are provided with electric cylinders 22. The output end of the electric cylinder 22 is fixedly connected to the moving block 21 and is parallel to the rack 19.

[0040] like Figure 3 , Figure 4 As shown, the stove body 1 contains a filter chamber 23, a second fan 24, and a circulation pump 25. The filter chamber 23 contains an alkaline water tank 26 and a filter screen 27. The alkaline water tank 26 is located below the filter screen 27, and a water pipe 28 is located above the filter screen 27. Several nozzles 29 are installed on the water pipe 28. An outlet 30 and a level sensor 31 are located at the bottom of the alkaline water tank 26. The filter screen 27 is located above the top of the alkaline water tank 26. One end of the circulation pump 25 passes through the filter chamber 23 and is connected to the outlet 30. The other end of the circulation pump 25 is connected to a connecting pipe 32. One end of the water pipe 28 is sealed, and the other end of the water pipe 28... The end of the filter chamber 23 is connected to the connecting pipe 32. The second fan 24 is provided with an air inlet 2 and an air outlet 2. The air inlet 2 is provided with an air inlet pipe 7. The air inlet pipe 7 is provided with a one-way valve 12. One end of the air inlet pipe 7 is connected to the air inlet 2. The other end of the air inlet pipe 7 is connected to the filter chamber 23 through the one-way valve 12. The end of the air inlet pipe 7 connected to the filter chamber 23 is located above the filter screen 27. The air outlet 2 of the second fan 24 is provided with an air outlet pipe 33. The air outlet 33 is provided with a one-way valve 34. The second fan 24 is connected to the air curtain box 11 through the side suction cabinet 3 via the air outlet pipe 33.

[0041] like Figure 2 , Figure 3 and Figure 4As shown, the air curtain box 11 is rectangular in shape. Several smoke sensors 35 corresponding to the positions of the stove 2 are provided on the air curtain box 11. Three air curtain chambers 36 are provided inside the air curtain box 11. One side edge of the air curtain box 11 is connected to the side suction cabinet 3. The three air curtain chambers 36 are located at the other side edges of the air curtain box 11. The top of the air curtain chamber 36 is away from the stove 2, and the bottom of the air curtain chamber 36 is close to the stove 2. An exhaust port 37 is provided at the bottom of the air curtain chamber 36. One end of the exhaust pipe 33 is connected to the three air curtain chambers 36 respectively, and the other end of the exhaust pipe 33 is connected to the second exhaust port on the second fan 24.

[0042] like Figure 2 , Figure 3 and Figure 4 As shown, an air supply pipe 38 is provided on the air outlet of fan 6. One end of the air supply pipe 38 is connected to the air outlet of several fans 6, and the other end of the air supply pipe 38 passes through the filter chamber 23 and is located between the water pipe 28 and the filter screen 27. Figure 3 As shown, an oil fume detector 39 is installed inside the air supply duct 38, and a three-way control valve 40 is installed on the air supply duct 38. The oil fume detector 39 is located at the end of the air supply duct 38 near the first air outlet, and the three-way control valve 40 is located at the end of the air supply duct 38 away from the first air outlet. A connecting pipe 41 is installed on the three-way control valve 40. One end of the connecting pipe 41 is connected to the three-way control valve 40, and the other end of the connecting pipe 41 is connected to the air outlet 33. A one-way valve 34 is located between the connecting pipe 41 and the second air outlet.

[0043] During operation, select one of the stoves 2 to work, turn on the corresponding equipment, and the corresponding smoke sensor 35 will detect the smoke concentration in real time. When the data detected by the smoke sensor 35 is within the low concentration range, control the fan 6 to run at a low speed; when the data detected by the smoke sensor 35 is between the low and medium concentration values, control the fan 6 to run at a medium speed; when the data detected by the smoke sensor 35 is between the medium and high concentration values, control the fan 6 to run at a high speed; when the data detected by the smoke sensor 35 is higher than the high concentration value, an alarm will sound and control the fan 6 to stop running, so as to remind the operator to check the equipment.

[0044] Under the action of fan 6, the oil fumes are first cooled by the refrigerant plate 5 and adhere to the refrigerant plate 5 to form oil. The gas in the oil fumes is first deodorized by the deodorizing filter 13, then filtered by the dust filter 14 to remove impurities in the gas, and finally transported by fan 6. At this time, the oil fume detector 39 detects the gas at the air outlet of fan 6. When the detected data meets the emission standards, the control system controls the gas to be discharged through the air outlet pipe 33 to form an air curtain around the stove body 1 through the three-way control valve 40. If the detected data does not meet the emission standards, the control system controls the gas to be discharged into the alkaline water tank 26 through the three-way control valve 40 for a second filtration, and the filtered gas is transported by fan 24 and discharged through the air outlet pipe 33 to form an air curtain around the stove body 1.

[0045] Due to the high viscosity of the oil, some oil inevitably accumulates on the refrigerant plate 5. At this time, the cleaning device 4 needs to be activated to remove the oil stains from the refrigerant plate 5: the electric cylinder 22 drives the moving block 21 to move along the length of the rack 19, and the roller 15 rotates by meshing with the rack 19 through the gear 18. The oil absorbent cotton 16 cleans the surface of the refrigerant plate 5. At the same time, since the weight of the oil absorbent cotton 16 increases after absorbing the oil stains, the pressure sensor 17 sets a pressure value. When the oil absorbent cotton 16 reaches the set pressure value, the control system issues a command to require the operator to replace the oil absorbent cotton 16. This can effectively prevent the oil absorbent cotton 16 from leaking oil due to oversaturation, which is beneficial to the cleaning of the stove body 1 and extends the service life of the equipment.

Claims

1. An environmentally friendly method for condensing cooking fumes in commercial kitchens, characterized in that, Includes the following steps: Step 1: Start the equipment. The smoke sensor (35) detects the smoke concentration and transmits the data to the control system. Step 2: Determine the operating parameters of fan 1 (6) based on the smoke concentration; Step 3: After the oil fume is filtered, the gas is detected by the oil fume detector (39) at the air outlet of the fan (6) to see if the gas meets the oil fume emission standard, and the data is transmitted to the control system, which then determines whether the filtered oil fume needs to be filtered again. Step four: The gas is discharged through the air outlet pipe (33) to form an air curtain around the stove body (1); The system includes a stove body (1), which has several stovetops (2), a side-suction cabinet (3), and a cleaning device (4). One side of the side-suction cabinet (3) is close to the stovetops (2), and the other side is away from the stovetops (2). The side of the side-suction cabinet (3) close to the stovetops (2) has several refrigerant plates (5) corresponding to the stovetops (2). An evaporator is installed inside the refrigerant plates (5). The side-suction cabinet (3) has several fans (6) corresponding to the refrigerant plates (5). One side of the fans (6) is connected to the side of the side-suction cabinet (3) away from the stovetops (2). On the other side of the first (6), there is an air inlet corresponding to the position of the refrigerant plate (5). The stove body (1) is equipped with a compressor (8) and a water tank (9). The water tank (9) is equipped with a condenser (10). The evaporator, compressor (8) and condenser (10) are connected in sequence through refrigerant pipes. The top of the side suction cabinet (3) is equipped with an air curtain box (11). The first fan (6) is equipped with an air outlet. The first fan (6) is connected to the air curtain box (11) through the air outlet. The stove body (1) is located at the bottom of the side suction cabinet (3). The cleaning device (4) is located between the refrigerant plate (5) and the stove (2). The cleaning device (4) includes a roller (15) wrapped with oil-absorbing cotton (16). The oil-absorbing cotton (16) is in contact with the surface of the refrigerant plate (5). The length of the oil-absorbing cotton (16) is greater than or equal to the sum of the lengths of several refrigerant plates (5). The stove body (1) is equipped with a pressure sensor (17), which is installed between the oil-absorbing cotton (16) and the stove body (1). The end of the roller (15) is equipped with a gear (18). The side of the side suction cabinet (3) is equipped with a rack (19) that meshes with the gear (18). The length of (19) is greater than or equal to the width of the refrigerant plate (5). The angle between the rack (19) and the surface of the stove body (1) is the same as the angle between the refrigerant plate (5) and the surface of the stove body (1). Both ends of the roller (15) are provided with ball bearings (20). The gear (18) is located between the ball bearings (20) and the oil-absorbing cotton (16). The roller (15) is connected to a moving block (21) through the ball bearings (20). Both sides of the stove body (1) are provided with electric cylinders (22). The output end of the electric cylinder (22) is fixedly connected to the moving block (21) and is parallel to the rack (19).

2. The environmentally friendly method for condensing cooking fumes in commercial kitchens according to claim 1, characterized in that, In step one, the smoke sensor (35) is set to three smoke concentration values, namely low concentration, medium concentration and high concentration.

3. The environmentally friendly method for condensing commercial kitchen fumes according to claim 2, characterized in that, in In step two, when the data detected by the smoke sensor (35) is within the low concentration range, the fan (6) is controlled to run at a low speed; when the data detected by the smoke sensor (35) is between the low and medium concentration values, the fan (6) is controlled to run at a medium speed; when the data detected by the smoke sensor (35) is between the medium and high concentration values, the fan (6) is controlled to run at a high speed; when the data detected by the smoke sensor (35) is higher than the high concentration value, an alarm is triggered and the fan (6) is stopped to remind the operator to inspect the equipment.

4. A commercial kitchen fume condensation and environmental protection method according to claim 1, 2, or 3, characterized in that, in In step three, the fumes are cooled by the refrigerant plate (5) and adhere to the refrigerant plate (5) to form oil. The gas in the fumes is first deodorized by the deodorizing filter (13), then filtered by the dust filter (14) to remove impurities in the gas, and finally transported by the first fan (6). The fume detector (39) detects the gas at one of the air outlets of the first fan (6). In step four, when the detected data meets the emission standards, the control system controls the gas to be discharged through the air outlet pipe (33) to form an air curtain around the stove (1) through the three-way control valve (40). If the detected data does not meet the emission standards, the control system controls the gas to be discharged into the alkaline water tank (26) through the three-way control valve (40) for another filtration, and the filtered gas is transported by the second fan (24) and discharged through the air outlet pipe (33) to form an air curtain around the stove (1).

5. A commercial kitchen fume condensation and environmental protection method according to claim 1, 2, or 3, characterized in that, The side-suction cabinet (3) is equipped with an odor removal filter (13) and a dust removal filter (14). The odor removal filter (13) and the dust removal filter (14) are detachably connected to the side-suction cabinet (3). The odor removal filter (13) is located between the refrigerant plate (5) and the dust removal filter (14). The dust removal filter (14) is located between the odor removal filter (13) and the air inlet.

6. A commercial kitchen fume condensation and environmental protection method according to claim 1, 2, or 3, characterized in that, The stove body (1) is equipped with a filter chamber (23), a second fan (24), and a circulation pump (25). The filter chamber (23) is equipped with an alkaline water tank (26) and a filter screen (27). The alkaline water tank (26) is located below the filter screen (27). A water pipe (28) is located above the filter screen (27). Several nozzles (29) are provided on the water pipe (28). The bottom of the alkaline water tank (26) is equipped with a liquid outlet (30) and a liquid level sensor (31). The filter screen (27) is located above the top of the alkaline water tank (26). One end of the circulation pump (25) passes through the filter chamber (23) and is connected to the liquid outlet (30). The other end of the circulation pump (25) is equipped with a connecting pipe (32). One end of the water pipe (28) is sealed. The other end of the fan (24) passes through the filter chamber (23) and is connected to the connecting pipe (32). The fan (24) is provided with an air inlet (2) and an air outlet (2). The air inlet (2) is provided with an air inlet pipe (7). The air inlet pipe (7) is provided with a one-way valve (12). One end of the air inlet pipe (7) is connected to the air inlet (2). The other end of the air inlet pipe (7) is connected to the filter chamber (23) through the one-way valve (12). The end of the air inlet pipe (7) connected to the filter chamber (23) is located above the filter screen (27). The air outlet (24) of the fan (24) is provided with an air outlet pipe (33). The air outlet pipe (33) is provided with a one-way valve (34). The fan (24) passes through the side suction cabinet (3) and is connected to the air curtain box (11) through the air outlet pipe (33).

7. The environmentally friendly method for condensing commercial kitchen fumes according to claim 6, characterized in that, The air curtain box (11) is rectangular in shape. The air curtain box (11) is equipped with several smoke sensors (35) corresponding to the position of the stove (2). The air curtain box (11) is equipped with three air curtain cavities (36). One side edge of the air curtain box (11) is connected to the side suction cabinet (3). The three air curtain cavities (36) are located at the other side edges of the air curtain box (11). The top of the air curtain cavity (36) is far away from the stove (2). The bottom of the air curtain cavity (36) is close to the stove (2). The bottom of the air curtain cavity (36) is equipped with an exhaust port (37). One end of the air outlet pipe (33) is connected to the three air curtain cavities (36). The other end of the air outlet pipe (33) is connected to the second air outlet on the second fan (24).

8. The environmentally friendly method for condensing cooking fumes in commercial kitchens according to claim 7, characterized in that, The air outlet of the fan (6) is provided with an air supply pipe (38). One end of the air supply pipe (38) is connected to the air outlet of several fans (6). The other end of the air supply pipe (38) passes through the filter chamber (23) and is located between the water pipe (28) and the filter screen (27). An oil fume detector (39) is provided inside the air supply pipe (38). A three-way control valve (40) is provided on the air supply pipe (38). Located on the air supply pipe (38) near the first air outlet, the three-way control valve (40) is located on the air supply pipe (38) away from the first air outlet. The three-way control valve (40) is provided with a connecting pipe two (41). One end of the connecting pipe two (41) is connected to the three-way control valve (40), and the other end of the connecting pipe two (41) is connected to the air outlet pipe (33). The one-way valve two (34) is located between the connecting pipe two (41) and the second air outlet.

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