Fireproof kitchen fume purification device

Abstract

The utility model discloses a fireproof kitchen oil fume purification device, which is characterized in that a fume collecting and discharging mechanism is arranged above a cooking range, comprises a fume collecting hood, a purification throat pipe, a fume collecting box and an exhaust pipeline, and is used for collecting, purifying and collecting oil fume, conveying the oil fume into a spiral-flow type purification fan for secondary purification and discharging the oil fume; the circulating water mechanism comprises a purification water tank, a first-stage circulating purification assembly and a second-stage circulating purification assembly, the first-stage circulating purification assembly is communicated with the interior of the purification throat pipe, and the second-stage circulating purification assembly is communicated with the spiral-flow type purification fan; an air inlet of the spiral-flow type purification fan is communicated with one end, far away from the smoke collecting box, of the exhaust pipeline, a silencer and an exhaust pipe communicated with the outside are fixedly connected to an air outlet of the spiral-flow type purification fan in sequence, and the spiral-flow type purification fan is used for secondarily purifying the oil smoke in the exhaust pipeline and then exhausting the oil smoke to the outside. The fireproof kitchen oil fume purification device disclosed by the utility model is good in oil fume purification effect, low in energy consumption and high in safety performance.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen fume purification equipment, in particular to a fire-proof kitchen fume purification device. Background Art

[0002] At present, the kitchen fume purification equipment in catering industry, government agencies, schools, hospitals, hotels and other units mainly adopts traditional equipment, namely: fume hood + exhaust duct + high-power centrifugal fan + high-low voltage electrostatic purifier. This equipment configuration has huge fire hazards, unstable purification rate, difficult cleaning, secondary pollution and other defects; specifically, the exhaust duct grease ignites: the fire overflowed from the wok into the exhaust duct, causing the exhaust duct grease to ignite, thus causing a fire; in addition, the grease accumulated in the exhaust duct is difficult to clean. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a fire-proof kitchen fume purification device.

[0004] The utility model provides a fire-proof kitchen fume purification device, which includes a smoke collecting and exhausting mechanism, a circulating water mechanism and a cyclone-type purification fan; wherein:

[0005] The smoke collecting and exhausting mechanism is arranged above the stove, and includes a smoke collecting hood, a purification throat, a smoke collecting box and an exhaust duct which are connected in sequence, and is used to collect, purify and collect the oil smoke, and then transport it to the inside of the cyclone purification fan for secondary purification before being discharged;

[0006] The circulating water mechanism includes a purified water tank and a primary circulating purification component and a secondary circulating purification component connected thereto for purifying oil smoke, the primary circulating purification component is connected to the interior of the purification throat, and the secondary circulating purification component is connected to the cyclone purification fan;

[0007] The cyclone purification fan has an air inlet connected to one end of the exhaust duct away from the smoke collecting box, and an air outlet is fixedly connected with a muffler and an exhaust pipe connected to the outside in sequence, so as to perform secondary purification on the oil smoke inside the exhaust duct and then discharge it to the outside.

[0008] Preferably, the purification throat is fixedly arranged below one side of the smoke outlet of the smoke collecting hood, and a water spray fire wall is fixedly arranged at the smoke outlet of the smoke collecting hood and located inside the purification throat.

[0009] Preferably, the smoke collecting box is fixedly arranged on the top surface of the smoke collecting hood, and the exhaust duct is fixedly arranged above the top surface of the smoke collecting box; the bottom inlet of the smoke collecting box is connected to the top outlet of the purification throat, and the top outlet of the smoke collecting box is connected to the inlet of the exhaust duct.

[0010] Preferably, the purified water tank comprises a tank body, a circulating water pump, an oil discharge assembly and a water inlet control valve; wherein,

[0011] The box body has a drain outlet at the bottom;

[0012] The circulating water pump is fixedly arranged on the bottom surface of the box body and is used to provide power for the water circulation inside the box body;

[0013] The oil drain assembly comprises an oil drain pipe arranged in a vertical direction inside the box, the bottom end of the oil drain pipe is sealed and connected to the drain port via a grommet, and the top end of the oil drain pipe is fixedly provided with an expanded oil drain port;

[0014] The water inlet control valve is arranged at the water inlet on the upper wall of the box body, and is used to control the amount of water entering the box body.

[0015] Preferably, the primary circulation purification component includes a hood upper water pipe, one end of which is connected to the water outlet of the circulating water pump, and the other end is inserted into the interior of the purification throat; a high-pressure water nozzle is fixedly provided at one end of the hood upper water pipe located inside the purification throat; a hood return water pipe connected to the interior of the purification throat is fixedly provided at the bottom of the purification throat, and the hood return water pipe has one end away from the purification throat and is inserted into the interior of the box.

[0016] Preferably, the secondary circulation purification component includes a fan upper water pipe and a fan return water pipe; wherein, one end of the fan upper water pipe is connected to the hood upper water pipe, and the other end is connected to the water inlet of the cyclone purification fan; one end of the fan return water pipe is connected to the water outlet of the cyclone purification fan, and the other end is connected to the interior of the box.

[0017] Preferably, the range of the water column sprayed by the high-pressure water nozzle covers the air inlet of the purification throat.

[0018] Preferably, flow control valves are respectively provided on the water pipe on the hood and the water pipe on the fan.

[0019] Preferably, the bottom end of the smoke hood water return pipe is disposed deep into the lower part of the box body.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The fireproof kitchen fume purification device of the utility model cooperates with the smoke collecting and exhausting mechanism, the circulating water mechanism and the cyclone type purification fan to combine the gas sent into the purification throat pipe with water to realize a water washing type purification mode, wash out the fume, particulate matter and non-methane total hydrocarbons (part) in the gas, and then purify the gas, realize the primary purification and secondary purification of the stove fume, and have a good purification effect. The purified gas is then discharged from the exhaust duct, avoiding the disadvantage of heavy oil scale adhering to the inner wall of the exhaust duct, and saving the heavy work of regular cleaning of the exhaust duct.

[0022] In addition, a high-pressure water nozzle is installed at the oil fume inlet of the smoke hood to form a water column-like firewall, which effectively intercepts sparks generated by the stove, oil pan, and wok, preventing them from entering the exhaust duct. This ensures that a fire in the oil pan cannot be transmitted to the exhaust duct, eliminates the hidden danger of fire in the duct, and improves safety performance.

[0023] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0024] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 A schematic diagram of the structure of a fire-proof kitchen fume purification device provided by an embodiment of the utility model;

[0027] Numbers in the figure: 1. Smoke hood; 2. Purification throat; 3. Smoke collection box; 4. Exhaust duct; 5. Water spray firewall; 6. Purification water tank; 61. Box; 62. Circulating water pump; 63. Oil drainage assembly; 631. Oil drainage pipe; 632. Oil drain port; 64. Water inlet control valve; 65. Drain port; 7. Water pipe on the hood; 8. High-pressure water nozzle; 9. Water return pipe of the hood; 10. Water pipe on the fan; 11. Water return pipe of the fan; 12. Flow control valve; 13. Cyclone purification fan; 14. Muffler; 15. Exhaust pipe; 16. Ground drainage ditch; A. The path trajectory of high-temperature oil smoke. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Please refer to Figure 1 The embodiment of the utility model provides a fire-proof kitchen fume purification device, including a smoke collecting and exhausting mechanism, a circulating water mechanism and a cyclone purification fan; wherein,

[0031] The smoke collecting and exhausting mechanism is arranged above the stove, and comprises a smoke collecting hood 1, a purification throat 2, a smoke collecting box 3 and an exhaust duct 4 which are connected in sequence, and is used to collect, purify and collect the oil smoke, and then transport it to the inside of the cyclone type purification fan 13 for secondary purification before being discharged;

[0032] In a preferred embodiment, the purification throat 2 is fixedly arranged below one side of the smoke outlet of the smoke hood 1, and a water spray fire wall 5 is fixedly arranged inside the purification throat 2 at the smoke outlet of the smoke hood 1; wherein the smoke hood 3 collects the oil smoke generated by the stove in a cavity, is connected to the air inlet of the purification throat 2, the smoke collecting box 3, and the exhaust duct 4, and the oil smoke is sent to the inside of the cyclone purification fan 13 under the power of the cyclone purification fan 13; the purification throat 2 and the water spray fire wall 5 are key structural components, the purification throat 2 is arranged on the outlet side of the smoke hood 3 and is designed to be sunken, on the one hand, for storing water, on the other hand, for increasing the path of oil smoke transmission, that is, increasing the combination time and area of ​​oil smoke and water, and improving the water washing purification effect; the setting of the water spray fire wall 5 can limit the range of water spraying on the one hand, and prevent the sparks generated by the stove from entering the smoke collecting box 3 or the exhaust duct 4 through the purification throat 2, eliminating the hidden danger of fire.

[0033] In a preferred embodiment, the smoke collecting box 3 is fixedly arranged on the top surface of the smoke collecting hood 1, and the exhaust duct 4 is fixedly arranged above the top surface of the smoke collecting box 3; the bottom inlet of the smoke collecting box 3 is connected to the top outlet of the purification throat 2, and the top outlet of the smoke collecting box 3 is connected to the inlet of the exhaust duct 4.

[0034] The smoke collecting box 3 is also a static pressure box, which distributes the air power generated by the cyclone purification fan 13 to multiple required points, so that the oil smoke generated at multiple points enters the exhaust duct 4 evenly.

[0035] The circulating water mechanism includes a purified water tank 6 and a primary circulating purification component and a secondary circulating purification component connected thereto for purifying oil smoke, the primary circulating purification component being connected to the inside of the purification throat 2, and the secondary circulating purification component being connected to the cyclone purification fan 13;

[0036] In a preferred embodiment, the purified water tank 6 is used to store circulating water for purification, and includes a tank body 61, a circulating water pump 62, an oil discharge assembly 63, and a water inlet control valve 64; oil entering the purified water tank 6 will float on the water surface, so the oil discharge assembly 63 is provided to discharge the oil; wherein,

[0037] The box body 61 has a drain port 65 at the bottom, and the drain port 65 is connected to the ground drain ditch 16 through an external drain pipe; the specific volume and shape of the box body 61 can be determined according to the on-site installation conditions, and in principle, a single machine shall not be less than 200L;

[0038] The circulating water pump 62 is fixedly arranged on the bottom surface of the box body 61. The water pump is equipped according to the water consumption and lift of the unit, and is used to provide power for the water circulation inside the box body 61.

[0039] The oil drain assembly 63 includes an oil drain pipe 631 arranged in a vertical direction inside the box body 61. The bottom end of the oil drain pipe 631 is connected to the drain port 65 by a screw seal. The top end of the oil drain pipe 631 is fixedly provided with an expanded oil drain port 632.

[0040] When the water level inside the box 61 is higher than the oil drain port 632, the oil floating on the water surface enters the oil drain port 632 and is discharged along the oil drain pipe 631;

[0041] When the box body 61 needs to drain water, the oil drain port 632 and the oil drain pipe 631 are rotated counterclockwise, and the drain port 65 is opened to drain water to the ground drain ditch 16;

[0042] The water inlet control valve 64 is arranged at the water inlet on the upper wall of the box body 61 and is connected to the external water inlet pipe to control the amount of water entering the box body 61; the water inlet control valve 64 adopts a float valve, and the water inlet control valve is completely closed when the float rises to the upper dead point.

[0043] Among them, the water level line inside the box body 61 must ensure that the water level and the oil drain port 632 are at the same level (or slightly lower than the oil drain port) after the water inlet control valve 64 is closed to ensure that the floating oil is drained into the oil drain pipe 631 when the water level rises; at the same time, it must ensure that the water inlet control valve 64 can be completely closed when shutting down.

[0044] In a preferred embodiment, the primary circulation purification component includes a hood upper water pipe 7, one end of which is connected to the water outlet of the circulating water pump 62, and the other end is inserted into the interior of the purification throat 2; a high-pressure water nozzle 8 is fixedly provided at one end of the hood upper water pipe 7 located inside the purification throat 2, and the water column sprayed by the high-pressure water nozzle 8 covers the air inlet of the purification throat 2; a hood return water pipe 9 connected to the interior of the purification throat 2 is fixedly provided at the bottom of the purification throat 2, and the hood return water pipe 9 is inserted into the interior of the box body 61 at one end away from the purification throat 2.

[0045] Among them, according to the length of the smoke hood 1 (generally set to 2 meters long), two groups of purification throats 2 are configured, and multiple groups of high-pressure water nozzles 8 are configured inside each group of purification throats 2, so that the water column sprayed by the high-pressure water nozzles 8 completely covers the air inlet of the purification throat 2, and the oil smoke entering from its air inlet is fully in contact with the water column.

[0046] In a preferred embodiment, the secondary circulation purification component includes a fan upper water pipe 10 and a fan return water pipe 11; wherein, one end of the fan upper water pipe 10 is connected to the hood upper water pipe 7, and the other end is connected to the water inlet of the cyclone purification fan 13; one end of the fan return water pipe 11 is connected to the water outlet of the cyclone purification fan 13, and the other end is connected to the interior of the box body 61.

[0047] In a preferred embodiment, flow control valves 12 are respectively provided on the hood upper water pipe 7 and the fan upper water pipe 10 for regulating the water flow entering the purification throat pipe 2 and the cyclone purification fan 13 respectively.

[0048] In a preferred embodiment, the bottom end of the smoke hood water return pipe 7 is disposed deep into the lower part of the box body 61 .

[0049] The cyclone purification fan 13 has an air inlet connected to one end of the exhaust duct 4 away from the smoke collecting box 3, and a muffler 14 and an exhaust pipe 15 connected to the outside are fixedly connected at its air outlet in sequence, so as to discharge the oil smoke inside the exhaust duct 4 to the outside after secondary purification; the setting of the muffler 14 can reduce the wind noise and the resonance noise generated by the fan noise and the pipeline.

[0050] Among them, the cyclone purification fan 13 is a wet purification fan, including a cabin, and the interior of the cabin is provided with components such as a motor, a water distribution tray, an impeller, an air duct, a guide plate, a purification ring, an emulsification bin, a dehydration bin, and an electric system; the motor drives the tower impeller to rotate, generating radial and axial power, and through the action of the water distribution tray and the fan power, the circulating water enters the cabin to form water mist, and under the action of the fan power, the oil smoke enters the cabin, and the oil smoke and the water mist are fully emulsified, and the oil smoke is secondary purified, and the contaminated liquid enters the water collection tank and flows back to the purified water tank 6 through the fan return pipe 11, and the clean gas is discharged from the air outlet; the cyclone purification fan 13 is used as the exhaust power and purification equipment of the kitchen oil fume purification equipment system, so that the purification rate is improved, the kinetic energy consumption is reduced, the use of electrostatic purifiers is eliminated, and the fireproof performance of the kitchen smoke purification system is guaranteed.

[0051] The smoke hood 1, purification throat 2, smoke collection box 3, exhaust duct 4, cyclone purification fan 13, smoke hood upper water pipe 7, fan upper water pipe 10, smoke hood return pipe 9, fan return pipe 11 and other components in the present technical solution are all fixed on the wall, roof or the wall surface of the adjacent components through connecting components to ensure the stability of the overall structure. These are technical means commonly used by technicians in this field and will not be repeated here.

[0052] The working principle of this utility model:

[0053] The high-temperature oil smoke generated on the stove (the arrow line A in the figure is the path trajectory of the high-temperature oil smoke) is collected through the smoke hood 1 under the drive of the cyclone purification fan 13, and enters the high-pressure water spray coverage area of ​​the purification throat 2 through the air outlet of the smoke hood 1. The high-pressure water nozzle 8 sprays a water column to completely cover the connecting port between the smoke hood 1 and the purification throat 2. At this time, the high-temperature oil smoke is fully in contact with the water column and is quickly cooled down, and the entrained sparks are extinguished at the same time; when the oil smoke passes through the purification throat 2 (air inlet), it is subjected to a process of pressure concentration to pressure release, and is combined with water mist to obtain a first-level purification, so that large particles of oil smoke dust remain in the water; the water containing oil pollution flows back to the inside of the purification water tank 6 through the smoke hood return pipe 9.

[0054] After the primary purification, the oil smoke, under the action of the fan power, enters the smoke collecting box 3 through the channel on the side of the water spray firewall 5 inside the purification throat 2 away from the smoke collecting hood 1, and evenly enters the inside of the exhaust duct 4 and then enters the cabin of the cyclone purification fan 13. Through the action of the water distribution tray and the fan power, the circulating water in the fan upper water pipe 10 enters the cabin to form water mist. The high-speed rotating tower impeller prompts the water mist and the oil smoke to immediately complete the emulsification process in the cabin to form a polluted liquid. At the same time, it enters the dehydration process under the impetus of the fan power. The dehydrator composed of the guide plate and the purification ring (dehydration ring) fully separates the polluted liquid from the air. The polluted liquid enters the water collection tank and flows back to the purification water tank 6 through the fan return pipe 11. The clean gas is discharged from the air outlet;

[0055] The whole process of kitchen fume fire prevention and purification is now completed.

[0056] The utility model has the following advantages:

[0057] 1. The purification method is changed from the traditional filtering and intercepting method to water washing. That is, the oil smoke, particulate matter, and non-methane total hydrocarbons (part) in the air are washed out by water washing to make the air clean. The purification effect is achieved: oil smoke 0.5mg / m 3 , particulate matter 2.5mg / m 3 , non-methane total hydrocarbons 4.5mg / m 3 ; This purification rate has been stable for a long time and is in a leading position in the country.

[0058] 2. Fire prevention, no-cleaning fireproof smoke hood: The oil fume suction port is fully covered by high-pressure water mist, and a firewall is set up for the smoke exhaust duct.

[0059] 3. The cyclone purification fan is installed near the smoke hood, changing the traditional end purification to front purification, saving a lot of kinetic energy required for smoke exhaust and reducing the motor power by 50%.

[0060] 4. The ultra-high purification efficiency enables the purified air to meet the direct discharge standard, that is, there is no need to install high-altitude discharge pipes.

[0061] 5. Brand-new purification technology eliminates the need for an electrostatic purifier, thus eliminating the potential fire hazard caused by static electricity.

[0062] 6. The fan and purifier are integrated into one, eliminating the need for large outdoor fans.

[0063] 7. No fans, no pipes, no electrostatic purifiers, and no cleaning; eliminating the arduous work of regular cleaning.

[0064] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fireproof kitchen fume purification device, characterized in that: It includes smoke collection and exhaust mechanism, circulating water mechanism and cyclone purification fan; among which, The smoke collecting and exhausting mechanism is arranged above the stove, and includes a smoke collecting hood, a purification throat, a smoke collecting box and an exhaust duct which are connected in sequence, and is used to collect, purify and collect the oil smoke, and then transport it to the inside of the cyclone purification fan for secondary purification before being discharged; The circulating water mechanism includes a purified water tank and a primary circulating purification component and a secondary circulating purification component connected thereto for purifying oil smoke, the primary circulating purification component is connected to the interior of the purification throat, and the secondary circulating purification component is connected to the cyclone purification fan; The cyclone purification fan has an air inlet connected to one end of the exhaust duct away from the smoke collecting box, and an air outlet is fixedly connected with a muffler and an exhaust pipe connected to the outside in sequence, so as to perform secondary purification on the oil smoke inside the exhaust duct and then discharge it to the outside.

2. The fireproof kitchen fume purification device according to claim 1, characterized in that: The purification throat is fixedly arranged below one side of the smoke outlet of the smoke collecting hood, and a water spray fire wall is fixedly arranged inside the purification throat at the smoke outlet of the smoke collecting hood.

3. The fireproof kitchen fume purification device according to claim 1, characterized in that: The smoke collecting box is fixedly arranged on the top surface of the smoke collecting hood, and the exhaust duct is fixedly arranged above the top surface of the smoke collecting box; the bottom inlet of the smoke collecting box is connected to the top outlet of the purification throat, and the top outlet of the smoke collecting box is connected to the inlet of the exhaust duct.

4. The fireproof kitchen fume purification device according to claim 1, characterized in that: The purified water tank comprises a tank body, a circulating water pump, an oil discharge assembly and a water inlet control valve; wherein, The box body has a drain outlet at the bottom; The circulating water pump is fixedly arranged on the bottom surface of the box body and is used to provide power for the water circulation inside the box body; The oil drain assembly comprises an oil drain pipe arranged in a vertical direction inside the box, the bottom end of the oil drain pipe is sealed and connected to the drain port via a grommet, and the top end of the oil drain pipe is fixedly provided with an expanded oil drain port; The water inlet control valve is arranged at the water inlet on the upper wall of the box body, and is used to control the amount of water entering the box body.

5. The fireproof kitchen fume purification device according to claim 4, characterized in that: The primary circulation purification component includes a hood upper water pipe, one end of which is connected to the water outlet of the circulating water pump, and the other end is inserted into the interior of the purification throat; a high-pressure water nozzle is fixedly provided at one end of the hood upper water pipe located inside the purification throat; a hood return water pipe connected to the interior of the purification throat is fixedly provided at the bottom of the purification throat, and the hood return water pipe is inserted into the interior of the box at one end away from the purification throat.

6. The fireproof kitchen fume purification device according to claim 5, characterized in that: The secondary circulation purification component includes a fan upper water pipe and a fan return water pipe; wherein, one end of the fan upper water pipe is connected to the hood upper water pipe, and the other end is connected to the water inlet of the cyclone purification fan; one end of the fan return water pipe is connected to the water outlet of the cyclone purification fan, and the other end is connected to the interior of the box.

7. The fireproof kitchen fume purification device according to claim 5, characterized in that: The water column sprayed by the high-pressure water spray nozzle covers the air inlet of the purification throat.

8. The fireproof kitchen fume purification device according to claim 6, characterized in that: The water pipe on the smoke hood and the water pipe on the fan are respectively provided with flow control valves.

9. The fireproof kitchen fume purification device according to claim 5, characterized in that: The bottom end of the smoke hood water return pipe is disposed deep into the lower part of the box body.

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