CN108006773B - A range hood flue gas energy recovery and utilization device - Google Patents

Abstract

The invention discloses a smoke energy recycling device of a range hood. The invention comprises a power generation device, a water utilization device and a filtering device. The whole set of device is externally connected with the exhaust pipe of the kitchen smoke extractor from front to back, when the gas with higher flow velocity and heat passes through the air inlet of the lower bottom shell, the oil smoke emits a large amount of heat, and the emitted heat is absorbed by the thermoelectric generation sheet. The thermoelectric generation piece passes through high temperature oil smoke on one side, and passes through cold water on the other side, and the two forms the difference in temperature, plays thermoelectric generation's purpose. The electric power that the thermoelectric generation piece produced drives the fan to rotate, and the wind-force of production makes the oil smoke strike on three filter, and the oil smoke after the filtration gets into the water storage box through the filtration mouth, and most harmful gas in the oil smoke dissolves in water, and the remaining will get into the blast pipe through the device again. The invention makes the oil fume treatment feasible by means of the high-temperature and pressure oil fume discharged by the kitchen fume extractor.

Description

A range hood flue gas energy recovery and utilization device

Technical field

The invention relates to a range hood flue gas energy recovery and utilization device, specifically a device that generates self-generated electricity to filter the oil fume.

Background technique

Kitchen fume is one of the major hidden hazards in life, containing more than 300 harmful substances. The fume gas formed by fuel burning and grease heating in the kitchen contains carbon monoxide, carbon dioxide, nitrogen oxides, and benzopyrene, which is highly carcinogenic, and many other substances that are seriously harmful to the human body. Ordinary range hoods currently on the market can only perform simple filtration of oil fume, and can only remove some harmful substances, mainly oil stains. They still cannot effectively remove gas compounds such as carbon monoxide, nitrogen oxides and benzene. Some range hoods even discharge incompletely filtered oil fumes directly into the atmosphere, aggravating air pollution and causing serious harm to people's health. In reality, the cooking fumes, food residues and sewage emitted by restaurants will have negative effects on the environment. With the adjustment of my country's industrial structure, the service industry accounts for an increasing proportion of GDP, and the environmental problems caused by it will become more prominent. In addition, every household emits a large amount of oil smoke every day. my country's oil smoke pollution has already increasingly serious.

In addition, because the oil fume emitted by the range hood has the characteristics of high heat and fast air flow, the oil fume itself has a certain amount of energy. The reasonable recovery and utilization of the oil fume energy will form a new form of green energy. Ordinary range hoods on the market today do not consider recycling the energy of the exhaust fume. Usually, untreated oil fume is discharged directly into the atmosphere, which is not only a kind of pollution, but also a waste of energy. Based on this, a self-generated device for filtering oil fume was designed. It uses the heat and flow rate of oil fume to generate electricity and filter the oil fume at the same time. It does not consume energy and can solve the pollution problem of kitchen oil fume.

Contents of the invention

The object of the present invention is to provide a range hood flue gas energy recovery and utilization device in view of the shortcomings of the existing technology.

The technical solutions adopted by the present invention to solve the technical problems are as follows:

A range hood flue gas energy recovery and utilization device, including a power generation device, a water utilization device and a filtering device. The power generation device is composed of a thermoelectric power generation piece; the water utilization device includes a water cooling box, a water storage box, a switch I, a switch II, and a water pipe II. and water pipe III; the filter device includes filter plate I, filter plate II, filter plate III, water pipe I and filter port;

The water-cooling box is equipped with three interfaces. The interface in the same direction as switch III is connected to switch III through water pipe II. When switch III is opened, the water transmitted through water pipe II will be transmitted into the water storage box through water pipe III; fan, filter plate I , filter plate II, filter plate III and multiple thermoelectric generators are placed in the corresponding grooves of the lower shell; and filter plate I, filter plate II, filter plate III are placed in the order that filter plate III is closest to the fan, filter plate Plate Ⅰ is farthest from the fan; the filter port is a filter pipe with a gradually narrowing mouth and a downward curve. The oil fume inlet of the filter port is set at the fan port, and the oil fume outlet is immersed in the water level in the water storage box; the bottom of the water storage box There is a filtered water outlet, and there is a water inlet and a water level observation hole on the wall of the water storage box; there are switches I and II under the water storage box, and the two ends of the water pipe I are connected to the switch I and the installation switch on the water storage box respectively. There is a lower bottom shell with a filtering device; the two ends of the water pipe II are respectively connected to the water cooling box and the switch III installed on the lower bottom shell, and the two ends of the water pipe III are respectively connected to the water storage box and the lower bottom shell equipped with the filter device.

Further, a plurality of thermoelectric power generating sheets are evenly distributed in the corresponding slots of the lower shell. One side of the thermoelectric generating sheet is high-temperature oil fume, and the other side is a water-cooling box. The two form a temperature difference. The thermoelectric generating sheet generates electricity, and the generated electricity is superimposed and passes through. Fan power supply line I and fan power supply line II are passed into the fan.

Furthermore, the water storage box is also provided with a through hole, which is connected with the exhaust pipe.

Furthermore, since the water in the water storage box has a large water pressure, the water in the water storage box must be drained before turning on the switch I to prevent the water in the water storage box from rushing into the device along the water pipe I.

Furthermore, the fixing ring is a circular ring with a special cut-out. The fixing ring can fit the water storage box on the lower bottom shell and the upper top shell. When the fixing ring fits well, the fixing ring is fixed by welding. , while the fixed ring is externally connected to the exhaust pipe.

Furthermore, the water level observation hole is seamlessly connected by a pre-designed glass, which is used to observe the water level and water quality in the water storage box.

Further, the grooves for placing filter plate I, filter plate II, and filter plate III in the lower bottom shell are evenly spaced; at the same time, the inter-plate gaps between filter plate I, filter plate II, and filter plate III gradually become smaller; The gap between filter plate I is the largest, and the gap between filter plate III is the smallest.

Further, when the upper top shell and the lower bottom shell are aligned, they are fixed through the bolt and nut fixing holes, and sealant must be applied to all joints between the upper top shell and the lower bottom shell.

Furthermore, the water-cooling box has three interfaces. The interface in the same direction as switch III is connected to switch III through water pipe II. The other two are the kitchen water pipe inlet and the kitchen water pipe outlet; the water in the water-cooling box is connected through water pipe II. Switch III, when the switch III is in the open state, the water flowing through the switch III flows to the water storage box through the water pipe III for the water supply of the water storage box; when the water level is almost the same, close the switch III.

Further, the oil stains filtered by filter plate I, filter plate II and filter plate III will flow into water pipe I through filter plate I, filter plate II and the oil storage tank under the filter plate respectively; switch I will be used for the outlet of water pipe I. Control, when the switch I is closed, the oil stains in the water pipe I cannot enter the switch II; the sewage in the water storage box directly passes through the switch I and is controlled by the switch II. When the switch II is opened, the sewage in the water storage box will be released directly. When the switch When switch I and switch II are opened at the same time, the sewage in water pipe I will also be released.

Technical effects of the present invention:

The present invention makes use of the high-temperature and pressured oil fume emitted from the kitchen range hood to make oil fume treatment feasible. The use of thermoelectric generators and water-cooling boxes make full use of the high temperature of the oil fume, and the acceleration of the fan allows the oil fume to better hit the filter plate. , it is not easy to cause blockage in the device, and it can enter the water storage box faster. The use of three filter plates and a water storage box allows most of the harmful substances in the oil fume to be removed. The design of the switch and water filling pipe makes the entire device more feasible in terms of drainage and sewage discharge.

Description of the drawings

Figure 1 is a partially planed right rear side view of the self-generated oil fume filtering device;

Figure 2 is a partially planed left rear side view of the self-generated oil fume filtering device;

Figure 3 is an overall view of the self-generated oil fume filtering device;

Figure 4 is a detailed view of the filter plate of the device;

Figure 5 is a detailed view of the thermoelectric power generation sheet of the device.

Among them, lower bottom shell 1, water cooling box 2, bolt and nut fixing holes 3, filter plate I4, filter plate II5, filter plate III6, fan 7, filter port 8, water storage box 9, fixing ring 10, water level observation hole 11, Switch I12, switch II13, water pipe I14, switch III15, thermoelectric generator piece 16, water pipe II17, water pipe III18, fan power supply line I19, fan power supply line II20 and upper top shell 21.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and examples.

As shown in Figure 1-5, a range hood flue gas energy recovery and utilization device includes a lower bottom shell 1, a water-cooling box 2, bolt and nut fixing holes 3, filter plate I4, filter plate II5, filter plate III6, fan 7, Filter port 8, water storage box 9, fixed ring 10, water level observation hole 11, switch I12, switch II13, water pipe I14, switch III15, thermoelectric generator 16, water pipe II17, water pipe III18, fan power supply line I19, fan power supply line II20 and upper top shell 21.

As shown in Figure 1, the fan 7, filter plate I4, filter plate II5, and filter plate III6 are placed in the corresponding grooves of the lower bottom shell 1, and the lower bottom shell 1 is used to place the filter plate I4, filter plate II5, and filter plate The grooves of plate III6 are evenly spaced; at the same time, the placement order of filter plate I4, filter plate II5, and filter plate III6 is that filter plate III6 is closest to fan 7, and filter plate I4 is farthest from fan 7. The inter-plate gaps between filter plate I4, filter plate II5 and filter plate III6 gradually become smaller. The gap between filter plate I4 is the largest, and the gap between filter plate III6 is the smallest. See Figure 4.

As shown in Figure 2, the filter port 8 is a filter pipe with a mouth that gradually narrows and bends downward. The oil fume inlet of the filter port 8 is set at the fan port 7, and the oil fume outlet is immersed in the water level in the water storage box 9;

As shown in Figure 1, since the water in the water storage box 9 has a large water pressure, the water in the water storage box 9 must be drained first before turning on the switch I12 to prevent the water in the water storage box 9 from flowing along the water pipe I14 Rush into the device.

As shown in Figures 1 and 3, the water storage box 9 is a water storage device for loading filtered water. The bottom of the water storage box 9 is provided with a filtered water outlet. The water storage box 9 has a water inlet and a water outlet on the wall of the pool. The water level observation hole 11 is made of a pre-designed glass and is used to observe the water level and water quality in the water storage box 9 .

As shown in Figure 3, when the upper top shell 21 and the lower bottom shell 1 are aligned, the five bolt and nut fixing holes 3 will also be fixed. However, since the entire device must have tight sealing, there are no gaps between the upper top shell 21 and the lower bottom shell 1. All joints of the bottom housing 1 must be coated with sealant. When the gas with high flow velocity and heat passes through the air inlet of the lower bottom housing 1, due to the sudden narrowing of the space, the oil fume dissipates a large amount of heat, and the dissipated heat is absorbed by the thermoelectric generating sheet 16. A plurality of thermoelectric power generating sheets 16 are arranged in the corresponding slots of the lower shell 1. One side of the thermoelectric generating sheet (16) is high-temperature oil fume, and the other side is the water-cooled box 2. The two form a temperature difference. The thermoelectric generating sheets 16 generate electricity, which is superimposed and then transmitted Fan 7. The fan 7 flaps, accelerating the speed of the oil fume so that it hits the filter plate I4, the filter plate II5, and the filter plate III6 at high speed. Finally, the oil fume is accelerated by the fan 7 and enters the filter port 8. The gas outlet of the filter port 8 is immersed in the water in the water storage box 9. Most of the harmful gases in the oil fume will be dissolved in the water, and the rest will enter the exhaust gas again through the device. in the tube. The water-cooling box 2 is provided with three interfaces. One interface in the same direction as the switch III15 is connected to the switch III15 through the water pipe II17. One of the other two interfaces is connected to the kitchen water pipe inlet, and the other is connected to the kitchen water pipe outlet. The specific water inlet and outlet are It depends on the actual situation of the kitchen. When the switch III15 is opened, the water transmitted through the water pipe II17 will be transmitted into the water storage box 9 through the water pipe III18. The water level observation hole 11 of the water storage box 9 can observe the water level of the water storage box 9. The oil stains filtered through filter plate I4, filter plate II5, and filter plate III6 will flow into the water pipe 114. The switch 112 will be used to control the outlet of the water pipe I14, and the switch II13 will be used for the sewage in the water storage box 9 and the oil stains discharged from the water pipe I14. export control.

The working process of the present invention is as follows:

The lower bottom shell 1 of the present invention is used to carry all the components of the entire device. When all the components are installed, the upper top shell 21 is covered. The upper top shell 21 and the lower bottom shell 1 each have five bolt and nut fixing holes 3. When the top shell is installed, When the shell 21 and the lower shell 1 are aligned, the five bolt and nut fixing holes 3 will also be aligned. At this time, the upper shell 21 and the lower bottom shell 1 can be fixed with bolts and nuts through the bolt and nut fixing holes 3. Since the entire device must have good sealing performance, sealant must be applied to all joints of the upper housing 21 and the lower housing 1 . The exhaust pipe is connected to the front and rear of the entire device. The place close to the water-cooling box 2 is the exhaust pipe air inlet, and the far away end is the exhaust pipe air outlet. When the high-temperature and high-speed oil smoke extracted from the range hood passes through the air inlet of the exhaust pipe, it is gathered at the thermoelectric generator 16, and a large amount of heat is accumulated. The emitted heat is absorbed by the thermoelectric generator 16. In the slot, one side of the thermoelectric power generating sheet 16 is high-temperature oil fume, and the other side is the water-cooling box 2. The two form a temperature difference, and the thermoelectric generating sheet 16 generates electricity. There are six thermoelectric power generation pieces 16 in total, and the generated power is superimposed and transmitted to the fan 7 through the fan power supply line I19 and the fan power supply line II20. Fan 7, filter plate I4, filter plate II5, filter plate III6 and filter port 8 are all installed on the corresponding channels of the lower bottom housing 1. The fan 7 rotates, accelerating the speed of the oil fume so that it hits the filter plate I4, filter plate II5 and filter plate III6 at high speed. Among them, the gaps between filter plate I4, filter plate II5, and filter plate III6 gradually become smaller. The gap between filter plate I4 is the largest, and the gap between filter plate III6 is the smallest. The combination of the three can filter oil fume to the maximum extent. When the oil fume passes through the fan 7, it is accelerated into the filter port 8. The filter port 8 is a filter pipe with a gradually narrowing mouth and a downward bend. The oil fume outlet of the filter port 8 is immersed in the water level in the water storage box 9, so that It can make the oil smoke better contact with water and better filter the toxic substances in the oil smoke. The water storage box 9 is a water storage device for loading filtered water. The bottom of the water storage box 9 has a filtered water outlet. The wall of the water storage box 9 has a water inlet and a water level observation hole 11. The water level observation hole 11 is seamlessly connected by a pre-designed glass and is used to observe the water level and water quality in the water storage box 9 . When the gas is filtered by the water in the water storage box 9, it passes through the through hole of the water storage box 9 and then enters the exhaust pipe through the fixing ring 10. The fixing ring 10 is a circular ring with a special cut-out. The fixing ring 10 can fit the water storage box 9 on the lower bottom shell 1 and the upper top shell 21. When the fixing ring 10 is well fitted, it is welded. The fixed ring 10 is fixed, and at the same time, the fixed ring 10 is externally connected to the exhaust pipe and plays a role in conducting gas. There are three interfaces in the water-cooling box 2. The interface in the same direction as the switch III15 is connected to the switch III15 through the water pipe II17. The other two are the kitchen water pipe inlet and the kitchen water pipe outlet. The specific water inlet and outlet are selected according to the kitchen. It depends on the actual situation. When the water in the kitchen water pipe flows through the water-cooling box 2, the water-cooling box 2 has the function of water cooling and can be used for temperature difference power generation. At the same time, the water in the water-cooling box 2 can also be used to supply water to the water storage box 9. The water in the water cooling box 2 is connected to the switch III15 through the water pipe II17. When the switch III15 is in the open state, the water flowing through the switch III15 flows through the water pipe III18 to the water storage box 9, which is used for the water supply of the water storage box 9. It can be observed through the water level observation hole 11. The water level of the water storage box 9, when the water level is almost the same, turn off the switch III15. The oil filtered by filter plate I4, filter plate II5 and filter plate III6 will flow into water pipe I14 through the oil storage tank under filter plate I4, filter plate II5 and filter plate 36 respectively. The switch I12 will be used to control the outlet of the water pipe I14. When the switch 112 is closed, the oil stains in the water pipe I14 cannot enter the switch II13. The sewage in the water storage box 9 can directly pass through the switch I12 and is controlled by the switch II13. When the switch II13 is opened, the sewage in the water storage box 9 will be directly released. When the switch I12 and the switch II13 are opened at the same time, the sewage in the water pipe I14 will also be released. release. Since the water in the water storage box 9 has a large water pressure, the water in the water storage box 9 must be drained first and then the switch I12 is turned on to prevent the water in the water storage box 9 from rushing into the device along the water pipe I14.

Claims (9)

1. The smoke energy recycling device of the range hood is characterized by comprising a power generation device, a water utilization device and a filtering device, wherein the power generation device is composed of a thermoelectric generation sheet (16); the water utilization device comprises a water cooling tank (2), a water storage box (9), a switch I (12), a switch II (13), a water pipe II (17) and a water pipe III (18); the filtering device comprises a filter plate I (4), a filter plate II (5), a filter plate III (6), a water pipe I (14) and a filtering port (8);

the water cooling box (2) is provided with three interfaces, one interface which is in the same direction as the switch III (15) is connected with the switch III (15) through a water pipe II (17), and when the switch III (15) is opened, water transmitted through the water pipe II (17) is transmitted into the water storage box (9) through a water pipe III (18); the fan (7), the filter plate I (4), the filter plate II (5), the filter plate III (6) and the plurality of thermoelectric generation pieces (16) are arranged in grooves corresponding to the lower bottom shell (1); the placement order of the filter plates I (4), II (5) and III (6) is that the filter plate III (6) is closest to the fan (7), and the filter plate I (4) is farthest from the fan (7); the filter port (8) is a filter pipeline with a gradually narrowed port and a downward bending, the oil fume inlet of the filter port (8) is arranged at the port of the fan (7), and the oil fume outlet is immersed in the water level in the water storage box (9); the bottom of the water storage box (9) is provided with a filtered water outlet, and the tank wall of the water storage box (9) is provided with a water inlet and a water level observation hole (11); a switch I (12) and a switch II (13) are arranged below the water storage box (9), and two ends of a water pipe I (14) are respectively connected with the switch I (12) on the water storage box (9) and a lower bottom shell (1) provided with a filtering device; two ends of a water pipe II (17) are respectively connected with a water cooling box (2) and a switch III (15) arranged on the lower bottom shell (1), and two ends of a water pipe III (18) are respectively connected with a water storage box (9) and the lower bottom shell (1) provided with a filtering device;

the front and the back of the whole set of device are connected with exhaust pipes, the place close to the water cooling box (2) is an exhaust pipe air inlet, and the far end is an exhaust pipe air outlet; the temperature difference generating pieces (16) are uniformly distributed in the corresponding notch of the lower bottom shell (1), one surface of each temperature difference generating piece (16) is high-temperature oil fume, the other surface of each temperature difference generating piece is a water cooling box (2), the temperature difference generating pieces and the water cooling boxes form a temperature difference, the temperature difference generating pieces (16) generate electric power, and the generated electric power is superposed and then transmitted into the fan (7) through the fan power supply line I (19) and the fan power supply line II (20).

2. The smoke energy recycling device of the range hood according to claim 1, wherein the water storage box (9) is further provided with a through hole, and the through hole is communicated with the exhaust pipe.

3. The smoke energy recycling device of the range hood according to claim 1 is characterized in that water in the water storage box (9) has larger water pressure, so that the water in the water storage box (9) is needed to be put first, then the switch I (12) is turned on, and water in the water storage box (9) is prevented from being flushed into the device along the water pipe I (14).

4. The smoke energy recycling device of the range hood according to claim 2, wherein the fixing ring (10) is a circular ring with a specially-made cutting opening, the fixing ring (10) can be attached to the water storage box (9) on the lower bottom shell (1) and the upper top shell (21), the fixing ring (10) is fixed in a welding mode when the fixing ring (10) is attached, and meanwhile the fixing ring (10) is externally connected with an exhaust pipe.

5. The smoke energy recycling device of the range hood according to claim 1, wherein the water level observation hole (11) is formed by a piece of glass which is designed in advance in a seamless fit mode and is used for observing the water level condition and the water quality condition in the water storage box (9).

6. The smoke energy recycling device of the range hood according to claim 1 is characterized in that grooves for placing a filter plate I (4), a filter plate II (5) and a filter plate III (6) in a lower bottom shell (1) are evenly spaced; meanwhile, gaps among the filter plates I (4), the filter plates II (5) and the filter plates III (6) are gradually reduced; the gaps among the filter plates I (4) are the largest, and the gaps among the filter plates III (6) are the smallest.

7. A smoke energy recycling device for a range hood according to claim 1, characterized in that the smoke energy recycling device is fixed by bolt and nut fixing holes (3) after the upper top shell (21) and the lower bottom shell (1) are aligned, and all joints of the upper top shell (21) and the lower bottom shell (1) must be coated with sealant.

8. The smoke energy recycling device of the range hood according to claim 1, wherein the water cooling box (2) is provided with three interfaces, the interfaces which are in the same direction with the switch III (15) are connected to the switch III (15) through a water pipe II (17), and the other two interfaces are kitchen water pipe inlets and kitchen water pipe outlets; the water of the water cooling tank (2) is connected with the switch III (15) through the water pipe II (17), and when the switch III (15) is in an on state, the water flowing through the switch III (15) flows to the water storage box (9) through the water pipe III (18) for supplying water to the water storage box (9); when the water level is almost the same, the switch III (15) is closed.

9. The smoke energy recycling device of the range hood according to claim 1, wherein oil stains filtered by the filter plate I (4), the filter plate II (5) and the filter plate III (6) flow into the water pipe I (14) through oil storage grooves below the filter plate I (4), the filter plate II (5) and the filter plate 3 (6) respectively; wherein the switch I (12) is used for controlling the outlet of the water pipe I (14), and when the switch I (12) is closed, oil in the water pipe I (14) cannot enter the switch II (13); the sewage of the water storage box (9) directly passes through the switch I (12) and is controlled by the switch II (13), when the switch II (13) is opened, the sewage of the water storage box (9) is directly discharged, and when the switch Guan (12) and the switch II (13) are simultaneously opened, the sewage in the water pipe I (14) is also discharged.