CN219222580U - Oil smoke purifier and oil smoke absorption equipment - Google Patents

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a lampblack purifying device and lampblack absorbing equipment, wherein the lampblack purifying device comprises an outer cylinder, an inner cylinder and a spraying assembly, a purifying air inlet is formed in the bottom of the outer cylinder, and the outer cylinder can be arranged on a lampblack absorber so that the purifying air inlet is communicated with a fan air outlet of the lampblack absorber; the inner cylinder is arranged in the outer cylinder in a suspending manner, a spraying cavity is arranged in the inner cylinder, an inner cylinder inlet is formed in the top of the inner cylinder, a purifying air inlet is communicated with the spraying cavity sequentially through the interval between the outer cylinder and the inner cylinder inlet, a sedimentation tank is arranged at the bottom of the inner cylinder, a purifying air outlet is arranged at the side part of the inner cylinder, and the purifying air outlet passes through the outer cylinder and is communicated with the outside; the spray assembly is arranged on the outer cylinder and is used for spraying atomized liquid to the inlet of the inner cylinder. The fume exhaust device comprises a fume exhaust fan and the fume purifying device, wherein the outer cylinder is arranged on the fume exhaust fan, and the purifying air inlet is communicated with the air outlet of the blower fan of the fume exhaust fan. The utility model optimizes the purifying effect and reduces pollution.

Description

Oil smoke purifier and oil smoke absorption equipment

Technical Field

The utility model belongs to the technical field of kitchen appliances, and particularly relates to an oil smoke purifying device and oil smoke absorbing equipment.

Background

The kitchen ventilator is an electric appliance such as cooking fume generated when cooking is sucked and cleaned.

At present, in order to purify oil drops, small particles and some harmful gases in oil smoke, a spray type oil smoke purifying device is added on some range hoods in the market, for example, chinese patent CN203810500U and CN110030605A, and the spray type oil smoke purifying device enables the oil drops, the small particles, the harmful gases and the atomized liquid in the oil smoke to be mixed and condensed into liquid through a separation channel filled with the atomized liquid, so that the effect of purifying the oil smoke is achieved. However, in the existing spray type oil fume purification device, the atomized liquid is sprayed downwards from the upper end of the separation channel, and the oil fume enters from the bottom end of the separation channel and then is mixed and contacted with the atomized liquid, so that the concentration of the atomized liquid in the separation channel gradually decreases from the top end to the bottom end, and the concentration of the oil fume in the separation channel gradually increases from the top end to the bottom end, so that the atomized liquid with high concentration is mixed and contacted with the oil fume with low concentration, and the atomized liquid with low concentration is mixed and contacted with the oil fume with high concentration, thereby resulting in poor oil fume purification effect, and the purification effect still needs to be improved.

Therefore, there is a need for a fume purification device and a fume exhaust apparatus that solve the above-mentioned technical problems.

Disclosure of Invention

The utility model aims to provide an oil smoke purifying device and oil smoke absorbing equipment, which are used for solving the technical problems that the oil smoke purifying effect is poor and the purifying effect is still to be improved in the prior art.

To achieve the purpose, the utility model adopts the following technical scheme:

a fume purification device comprising:

the outer barrel is provided with a purification air inlet at the bottom, and can be arranged on the range hood so that the purification air inlet is communicated with a fan air outlet of the range hood;

the inner barrel is suspended in the outer barrel, a spraying cavity is arranged in the inner barrel, an inner barrel inlet is formed in the top of the inner barrel, the purifying air inlet is communicated with the spraying cavity sequentially through the interval between the outer barrel and the inner barrel inlet, a sedimentation tank is arranged at the bottom of the inner barrel, a purifying air outlet is arranged at the side part of the inner barrel, and the purifying air outlet penetrates through the outer barrel to be communicated with the outside;

the spraying assembly is arranged on the outer cylinder and is used for spraying atomized liquid to the inlet of the inner cylinder.

As a preferred technical scheme of the oil fume purifying device, the oil fume purifying device further comprises a venturi, the venturi is suspended in the inner cylinder, the top opening of the venturi is communicated with the inlet of the inner cylinder, the bottom opening of the venturi faces the sedimentation tank, and the inner cavity of the venturi is the spraying cavity.

As a preferred technical scheme of above-mentioned oil smoke purifier, the venturi includes from the top down in proper order the receipts neck section, even section and the diffusion section of connecting, along from the top down's direction, the internal diameter of receipts neck section reduces gradually, the internal diameter of even section is unchangeable, the internal diameter of diffusion section increases gradually.

As a preferable technical scheme of the oil fume purifying device, the spraying assembly comprises an atomizing nozzle and a liquid supply assembly, wherein the atomizing nozzle is arranged at the inner top of the outer cylinder, and the liquid supply assembly is communicated with the atomizing nozzle and is used for supplying atomized liquid to the atomizing nozzle.

As a preferable technical solution of the above-mentioned fume purification device, the liquid supply assembly includes:

one end of the water inlet pipe is communicated with the atomizing nozzle;

one end of the water pumping pipe is communicated with the bottom of the sedimentation tank;

and the circulating water pump is communicated between the other end of the water inlet pipe and the other end of the water suction pipe and is used for pumping atomized liquid from the bottom of the sedimentation tank into the atomizing nozzle.

As an optimized technical scheme of the oil fume purifying device, the oil fume purifying device further comprises an overflow pipe and an oil discharge pipe, one end of the overflow pipe is communicated with the top of the sedimentation tank, and the other end of the overflow pipe is communicated with an oil box of the range hood through the oil discharge pipe.

As an optimized technical scheme of the oil fume purifying device, the oil fume purifying device further comprises a three-way reversing valve, the water inlet pipe comprises a first water inlet section and a second water inlet section, two end interfaces of the three-way reversing valve are respectively communicated with one end of the first water inlet section and one end of the second water inlet section, the other end interface of the three-way reversing valve is communicated with the oil discharge pipe, the other end of the first water inlet section and the other end of the second water inlet section are respectively communicated with the atomizing nozzle and the circulating water pump, and the three-way reversing valve can be adjusted to the first water inlet section and the second water inlet section to be communicated with each other or to the oil discharge pipe and the second water inlet section to be communicated with each other.

As a preferable technical scheme of the oil fume purifying device, the top of the outer cylinder is provided with a liquid injection port, the liquid injection port is used for injecting atomized liquid into the sedimentation tank, and the liquid injection port is covered with a liquid injection cover.

As a preferable technical scheme of the oil fume purifying device, the outer cylinder is of a cylindrical structure or a square cylindrical structure.

The utility model provides a range hood equipment, includes the lampblack absorber, still includes foretell oil smoke purifier, the urceolus install in the lampblack absorber, just purify the air intake intercommunication in the fan air outlet of lampblack absorber.

The utility model has the beneficial effects that:

the utility model provides a lampblack purifying device, which is connected with a fan air outlet of a lampblack absorber when in use and is used for purifying smoke exhausted from the fan air outlet. The smog gets into from the purification air intake of urceolus bottom, moves up through the interval between urceolus and the inner tube, gets into through the inner tube entry after removing the top and sprays the intracavity, including barrel entry department, spray the subassembly spray atomized liquid, smog through the inner tube entry begins and atomized liquid contacts, gradually condenses along with the downshifting, oil droplet, particulate matter and atomized liquid condense into big liquid droplet, gradually the drip in the sedimentation tank, the clean gas of lighter quality is discharged from the purification air outlet, so, oil droplet and particulate matter in the smog are purified effectively, the pollution to the air has been reduced. And, atomized liquid sprays into from the top of spraying the chamber, and smog also gets into from the top of spraying the chamber, that is, sprays the concentration of atomized liquid in the chamber from the top down and reduces gradually, and sprays the concentration of smog in the chamber from the top down and also reduces gradually, consequently, atomized liquid and the smog of heavy concentration mix the condensation, atomized liquid and the smog of little concentration mix the condensation for it is more abundant to mix the condensation, and purifying effect is better.

The fume purifying device provided by the utility model further comprises a venturi, wherein the venturi is nested with the inner cylinder, so that the change of the airflow speed in the spraying cavity is facilitated, the fume and the atomized liquid are fully mixed, the condensation effect is further optimized, and the venturi also prevents the fume from escaping from the top.

The utility model also provides the oil fume exhaust equipment which comprises the oil fume exhaust fan and the oil fume purifying device, and the oil fume exhaust equipment optimizes the purifying effect on oil fume and reduces the pollution on air more due to the arrangement of the oil fume purifying device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic view of a range hood according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a fume purifying device according to an embodiment of the present utility model.

In the figure:

10. a range hood; 101. an air outlet of the fan; 102. an oil box;

1. an outer cylinder; 2. an inner cylinder; 3. a venturi; 5. an overflow pipe; 6. a three-way reversing valve; 7. an oil drain pipe; 8. a liquid injection cover;

11. a purifying air inlet; 21. purifying an air outlet; 22. a sedimentation tank; 41. an atomizing nozzle; 421. a water inlet pipe; 422. a water pumping pipe; 423. and (3) a circulating water pump.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "mounted" are to be construed broadly, and may be, for example, mounted, connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or may be in communication with one another or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment provides a range hood device, which includes a range hood 10 and a range hood purifying device, where the range hood purifying device is installed at a fan air outlet 101 of the range hood 10 and is used for purifying smoke exhausted from the fan air outlet 101 of the range hood 10, so as to reduce pollution to air and reduce potential safety hazards caused by deposition of a large amount of oil drops in a flue.

Specifically, as shown in fig. 1 and 2, the oil fume purifying device provided in this embodiment includes an outer cylinder 1, an inner cylinder 2, and a spray assembly, a purifying air inlet 11 is provided at the bottom of the outer cylinder 1, and the outer cylinder 1 can be mounted on a range hood 10, so that the purifying air inlet 11 is communicated with a fan air outlet 101 of the range hood 10; the inner cylinder 2 is arranged in the outer cylinder 1 in a suspending manner, a spraying cavity is arranged in the inner cylinder 2, an inner cylinder inlet is formed in the top of the inner cylinder 2, a purifying air inlet 11 is communicated with the spraying cavity sequentially through the interval between the outer cylinder 1 and the inner cylinder 2 and the inner cylinder inlet, a sedimentation tank 22 is arranged at the bottom of the inner cylinder 2, a purifying air outlet 21 is arranged at the side part of the inner cylinder 2, and the purifying air outlet 21 passes through the outer cylinder 1 to be communicated with the outside; the spray assembly is arranged on the outer cylinder 1 and is used for spraying atomized liquid to the inlet of the inner cylinder.

The oil smoke purifying device provided in this embodiment is connected to the fan air outlet 101 of the range hood 10 when in use, and is used for purifying smoke exhausted from the fan air outlet 101. Specifically, smog gets into from the purification air intake 11 of urceolus 1 bottom, moves up through the interval between urceolus 1 and the inner tube 2, gets into through the inner tube entry after removing the top and sprays the intracavity, including barrel entry department, spray the subassembly and spray the atomized liquid, smog through the inner tube entry begins and atomized liquid contact, gradually condense along with the downshifting, oil droplet, particulate matter and atomized liquid condense into big liquid droplet, gradually the drip is in sedimentation tank 22, the clean gas of lighter quality is discharged from purifying air outlet 21, so, oil droplet and particulate matter in with smog are purified effectively, the pollution to the air has been reduced. And, atomized liquid sprays into from the top of spraying the chamber, and smog also gets into from the top of spraying the chamber, that is, sprays the concentration of atomized liquid in the chamber from the top down and reduces gradually, and sprays the concentration of smog in the chamber from the top down and also reduces gradually, consequently, atomized liquid and the smog of heavy concentration mix the condensation, atomized liquid and the smog of little concentration mix the condensation for it is more abundant to mix the condensation, and purifying effect is better.

Specifically, in the present embodiment, the outer cylinder 1 of the range hood 10 is mounted on the range hood 10, and the purification air inlet 11 is communicated with the fan air outlet 101 of the range hood 10, so that smoke can smoothly enter the outer cylinder 1 from the fan air outlet 101.

Specifically, the range hood 10 is an electrical appliance well known to those skilled in the art, and the specific structure and operation principle will not be described in detail herein.

More specifically, the purification air outlet 21 is sleeved with a telescopic smoke exhaust pipe, and the telescopic smoke exhaust pipe is convenient to install and discharge gas.

Specifically, the lampblack purifying device further comprises a venturi tube 3, the venturi tube 3 is arranged in the inner cylinder 2 in a suspending mode, the top opening of the venturi tube 3 is communicated with the inlet of the inner cylinder, the bottom opening of the venturi tube 3 is arranged towards the sedimentation tank 22, and the inner cavity of the venturi tube 3 is a spraying cavity. The venturi 3 is arranged, so that the airflow speed in the spraying cavity can be changed, the oil smoke and the atomized liquid are fully mixed, the condensation effect is further optimized, and the venturi 3 also prevents the oil smoke from escaping from the top. Specifically, smog gets into the spray cavity through venturi tube 3's top opening, and oil droplet, particulate matter and atomized liquid condense into big liquid drop, and under the action of gravity, big liquid drop drips sedimentation tank 22 through venturi tube 3's bottom opening, and lighter clean flue gas is insoluble in atomized liquid, can be pushed by continuous air current, and the bottom opening of follow venturi tube 3 is diffused all around in the centre back along inner tube 2 inner wall climbing, is discharged from purifying air outlet 21 again, consequently, venturi tube 3's setting has prolonged the setting time, has further optimized the effect of condensing.

More specifically, venturi 3 includes a neck section, a uniform section and a diffusion section connected in order from the top down, and along the direction from the top down, the inner diameter of the neck section gradually decreases, the inner diameter of the uniform section is unchanged, and the inner diameter of the diffusion section gradually increases. The oil mist firstly enters the neck collecting section through the top opening of the venturi tube 3, the flow speed of gas in the oil mist is accelerated along with the reduction of the flow area, so that the flow speed of large oil drops and small oil drops in the oil mist is accelerated, the acceleration of the large oil drops is smaller than the acceleration of the small oil drops due to the influence of inertia and mass, namely, the speed of the small oil drops in the neck collecting section is larger than that of the large oil drops, so that the large oil drops and the small oil drops collide, the coagulation is more facilitated, and meanwhile, the small oil drops and the large oil drops collide with an atomized liquid due to the difference of the speeds, and the coagulation is facilitated; in the even section, the speed difference of big oil drop, oil drop and atomized liquid leads to collision each other, even section gives longer collision time, through the collision in the even section, big oil drop, oil drop and atomized liquid's speed difference can be more and more little, therefore, set up the diffuser at even section's bottom, after getting into the diffuser, along with the increase of flow area, the flow velocity of gas in the oil mist slows down, make the flow velocity of big oil drop and oil drop in the oil mist slow down, also because inertia and mass's influence, the speed of big oil drop reduces comparatively slowly, the speed of oil drop reduces comparatively more fast, namely, big oil drop's speed is greater than the oil drop, because the speed difference, big oil drop and oil drop bump, equally, because the speed difference makes oil drop and big oil drop collide with atomized liquid, be favorable to the coalescing more. In the whole circulation process in the venturi tube 3, the speed is increased and reduced, so that the sufficient collision of the speed difference is ensured to be condensed, the speed difference between the speed of entering the venturi tube 3 and the speed of exiting the venturi tube 3 is not great, and the phenomenon that some oil liquid in the sedimentation tank 22 is brought out due to the too great speed of discharge is avoided.

Specifically, the spray assembly includes an atomizing nozzle 41 and a liquid supply assembly, the atomizing nozzle 41 is disposed at the inner top of the outer cylinder 1, and the liquid supply assembly is communicated with the atomizing nozzle 41 for supplying the atomizing nozzle 41 with atomized liquid. The structure and operation of the atomizing nozzle 41 can be referred to in the prior art, and will not be described herein.

Specifically, the liquid supply assembly includes a water inlet pipe 421, a water suction pipe 422, and a circulating water pump 423, wherein one end of the water inlet pipe 421 is communicated with the atomizing nozzle 41; one end of the water pumping pipe 422 is communicated with the bottom of the sedimentation tank 22; the circulating water pump 423 is connected between the other end of the water inlet pipe 421 and the other end of the water pumping pipe 422, and pumps the atomized liquid from the bottom of the sedimentation tank 22 into the atomized nozzle 41. The oil-water mixture dropped into the sedimentation tank 22, because the density of the oil is less than that of the water, the oil floats on the water, so the water pumping pipe 422 is communicated with the bottom of the sedimentation tank 22, and the water positioned below the sedimentation tank 22 can be supplied to the atomizing nozzle 41 through the water pumping pipe 422 and the water inlet pipe 421 under the suction action of the circulating water pump 423, thereby realizing the recycling of the water.

More specifically, the fume purification device further comprises an overflow pipe 5 and an oil drain pipe 7, wherein one end of the overflow pipe 5 is communicated with the top of the sedimentation tank 22, and the other end of the overflow pipe is communicated with the oil box 102 of the fume exhaust fan 10 through the oil drain pipe 7. Because the oil in the sedimentation tank 22 floats on the water, the oil spilling pipe 5 is communicated with the top of the sedimentation tank 22, when the oil-water mixture in the sedimentation tank 22 is too full, the oil can flow into the oil box 102 through the oil spilling pipe 5, and the oil is discharged.

Specifically, the lampblack purifying device further comprises a three-way reversing valve 6, the water inlet pipe 421 comprises a first water inlet section and a second water inlet section, the interfaces at the two ends of the three-way reversing valve 6 are respectively communicated with one end of the first water inlet section and one end of the second water inlet section, the interface at the other end of the three-way reversing valve 6 is communicated with an oil discharge pipe 7, the other end of the first water inlet section and the other end of the second water inlet section are respectively communicated with an atomizing nozzle 41 and a circulating water pump 423, and the three-way reversing valve 6 can be adjusted to be communicated with the first water inlet section and the second water inlet section or to be communicated with the oil discharge pipe 7 and the second water inlet section. When the three-way reversing valve 6 is regulated to the state that the first water inlet section and the second water inlet section are communicated, the circulating water pump 423 drives water in the sedimentation tank 22 to flow to the atomizing nozzle 41 through the water suction pipe 422, the second water inlet section and the first water inlet section in sequence by suction, so that the recycling of the water in the sedimentation tank 22 is realized; when the three-way reversing valve 6 is adjusted to the connection state of the oil drain pipe 7 and the second water inlet section, the circulating water pump 423 drives water in the sedimentation tank 22 to flow into the oil box 102 through the water suction pipe 422, the second water inlet section and the oil drain pipe 7 in sequence through suction, so that the discharge of the oil-water mixed liquid is realized. That is, the oil fume purifying device provided in this embodiment can realize the discharge of oil through the oil spill pipe 5 and the oil drain pipe 7, and can also periodically realize the discharge of the oil-water mixture through the circulating water pump 423 and the oil drain pipe 7.

Specifically, the top of urceolus 1 has seted up notes liquid mouth, annotates the liquid mouth and is used for injecting the atomized liquid to sedimentation tank 22 in, annotates the liquid mouth and covers and have notes liquid lid 8. After a period of circulating purification, the circulating water will gradually decrease, so that water needs to be added into the sedimentation tank 22 periodically, in this embodiment, when water needs to be added, the liquid injection cover 8 is opened, atomized liquid is injected into the sedimentation tank 22 through the liquid injection port, under the action of gravity, the atomized liquid will flow into the sedimentation tank, after the liquid injection is completed, the liquid injection cover 8 is covered, and foreign matters are prevented from entering.

Alternatively, the outer cylinder 1 is a cylindrical tubular structure, and the inner cylinder 2 is a cylindrical tubular structure. The purification air inlet 11 is a circular opening, and the fan air outlet 101 of the range hood 10 is a circular opening matched with the purification air inlet 11.

Alternatively, the outer cylinder 1 has a square cylindrical structure, and the inner cylinder 2 has a square cylindrical structure. The purification air inlet 11 is a square opening, and the fan air outlet 101 of the range hood 10 is a square opening matched with the purification air inlet 11.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. An oil fume purification device, comprising:

the outer cylinder (1) is provided with a purifying air inlet (11) at the bottom, and the outer cylinder (1) can be installed on the range hood (10) so that the purifying air inlet (11) is communicated with a fan air outlet (101) of the range hood (10);

the inner barrel (2) is arranged in the outer barrel (1) in a suspending manner, a spraying cavity is formed in the inner barrel (2), an inner barrel inlet is formed in the top of the inner barrel (2), the purifying air inlet (11) is communicated with the spraying cavity sequentially through the interval between the outer barrel (1) and the inner barrel (2) and the inner barrel inlet, a sedimentation tank (22) is arranged at the bottom of the inner barrel (2), a purifying air outlet (21) is formed in the side part of the inner barrel (2), and the purifying air outlet (21) penetrates through the outer barrel (1) to be communicated with the outside;

the spraying assembly is arranged on the outer cylinder (1) and is used for spraying atomized liquid to the inlet of the inner cylinder.

2. The oil fume purifying device according to claim 1, further comprising a venturi (3), wherein the venturi (3) is suspended in the inner cylinder (2), a top opening of the venturi (3) is communicated with the inlet of the inner cylinder, a bottom opening of the venturi (3) is arranged towards the sedimentation tank (22), and an inner cavity of the venturi (3) is the spraying cavity.

3. The fume purification device according to claim 2, wherein said venturi tube (3) comprises a neck-receiving section, a uniform section and a diffusion section which are sequentially connected from top to bottom, the inner diameter of said neck-receiving section gradually decreases along the direction from top to bottom, the inner diameter of said uniform section is unchanged, and the inner diameter of said diffusion section gradually increases.

4. The oil fume purification device according to claim 1, wherein the spray assembly comprises an atomizing nozzle (41) and a liquid supply assembly, the atomizing nozzle (41) is arranged at the inner top of the outer cylinder (1), and the liquid supply assembly is communicated with the atomizing nozzle (41) and is used for supplying atomized liquid to the atomizing nozzle (41).

5. The oil soot cleaning device of claim 4, wherein said liquid supply assembly comprises:

a water inlet pipe (421) one end of which is communicated with the atomizing nozzle (41);

one end of the water pumping pipe (422) is communicated with the bottom of the sedimentation tank (22);

and the circulating water pump (423) is communicated between the other end of the water inlet pipe (421) and the other end of the water suction pipe (422) and is used for pumping atomized liquid from the bottom of the sedimentation tank (22) into the atomizing nozzle (41).

6. The oil fume purification device according to claim 5, further comprising an overflow pipe (5) and an oil drain pipe (7), wherein one end of the overflow pipe (5) is communicated with the top of the sedimentation tank (22), and the other end is communicated with an oil box (102) of the range hood (10) through the oil drain pipe (7).

7. The oil fume purification device according to claim 6, further comprising a three-way reversing valve (6), wherein the water inlet pipe (421) comprises a first water inlet section and a second water inlet section, two end interfaces of the three-way reversing valve (6) are respectively communicated with one end of the first water inlet section and one end of the second water inlet section, the other end interface of the three-way reversing valve (6) is communicated with the oil drain pipe (7), the other end of the first water inlet section and the other end of the second water inlet section are respectively communicated with the atomizing nozzle (41) and the circulating water pump (423), and the three-way reversing valve (6) can be adjusted to enable the first water inlet section and the second water inlet section to be communicated with each other or to enable the oil drain pipe (7) and the second water inlet section to be communicated with each other.

8. The oil fume purifying device according to claim 5, wherein the top of the outer cylinder (1) is provided with a liquid injection port, the liquid injection port is used for injecting atomized liquid into the sedimentation tank (22), and the liquid injection port is covered with a liquid injection cover (8).

9. A fume purification device according to any one of claims 1-8, wherein said outer cylinder (1) is of cylindrical or square cylindrical configuration.

10. A range hood device comprising a range hood (10), and further comprising a range hood purification device according to any one of claims 1-9, wherein the outer cylinder (1) is mounted to the range hood (10), and the purification air inlet (11) is communicated with a fan air outlet (101) of the range hood (10).

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