CN212481424U - Smoke hood machine with fireproof and heat insulation functions - Google Patents

Abstract

The utility model discloses a petticoat pipe machine with thermal-insulated function of fire prevention for to the purification of flue gas, set up delivery pipe, aeration net and water receiving basin through top-down in the petticoat pipe of oil smoke purifying box below, be provided with the shower nozzle on the delivery pipe, and delivery pipe one end connection water pump, the clearance that leaves the flue gas process between water receiving basin and the petticoat pipe inner wall all around forms "inlet channel". When the water-saving device is used, water is sprayed onto the aeration net from the spray head through the water supply pipe, and due to the influence of negative pressure of the fan, the water cannot immediately drop on the water receiving basin, but a layer of water vapor bubble film is formed on the upper surface of the aeration net, and the water vapor bubble film plays a role in blocking oil drops, hot air, open fire, peculiar smell and the like, and plays a role in preliminary purification; because the smoke is a mixed gas containing a plurality of substance components, part of the gas is soluble in water, such as chlorine which forms the main component of odor, and the like, and when passing through the water vapor bubble film, the gas is contacted with water and dissolved in the water, and is carried away by the water, so that the gas purification effect is achieved.

Description

Smoke hood machine with fireproof and heat insulation functions

Technical Field

The utility model relates to an air purification technical field, in particular to petticoat pipe machine with thermal-insulated function of fire prevention.

Background

In the catering industry, a large amount of oil smoke can be produced in the cooking process, in order to reduce the damage of the oil smoke to the health of people, a smoke hood machine is generally installed above a cooking range in the prior art, and the smoke hood machine is discharged outdoors by rapidly pumping away waste gas produced by combustion of the cooking range and the oil smoke produced in the cooking process so as to reduce the harm of the smoke to indoor personnel. In industrial production, gases are also produced which contain substances or influence the quality of the air. In order to protect the environment better and make the exhausted smoke reach the exhaust standard, a smoke purifying device communicated with the smoke hood machine is generally arranged on the smoke hood machine to purify the oil smoke which is ready to be exhausted outdoors.

However, the existing smoke hood machine throws out the oil stain in the smoke through the oil-water separator under the centrifugal force action of the oil-water separator rotating at a high speed, and then collects the oil stain to realize purification. Therefore, the existing smoke hood machine does not have the functions of heat insulation and flame isolation, and when high temperature or flame strings enter the smoke purification device, the smoke purification device is easy to catch fire. Moreover, odor gas needs to be removed in the flue gas purification device, so that the purification load of the flue gas purification device is increased.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies of the prior art, the object of the present invention is to: the utility model provides a petticoat pipe machine with thermal-insulated function of fire prevention solves the problem that current petticoat pipe machine does not possess the function thermal-insulated, keep apart the flame.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a smoke hood machine with fireproof and heat insulation functions comprises a smoke hood and an oil smoke purification box arranged at the top of the smoke hood, wherein the oil smoke purification box is provided with a through hole communicated with the smoke hood, one end of the oil smoke purification box far away from the through hole is provided with an air outlet, and a purification unit and a fan are sequentially arranged between the through hole and the air outlet; the gas hood lower extreme is the air inlet, and the air inlet upper berth is equipped with the water receiving basin, and the bottom of water receiving basin is equipped with the outlet, and water receiving basin top is provided with the aeration net, and water receiving basin and aeration net are fixed on the inner wall of gas hood, and are equipped with inlet channel between the border of water receiving basin and the inner wall of gas hood, and aeration net top is provided with the delivery pipe, is fixed with the shower nozzle on the delivery pipe, and the water spray direction of shower nozzle is towards the upper surface of aeration net, and delivery pipe one end is connected with the.

In the smoke hood machine with the fireproof and heat insulation functions, the water supply pipes are fixed on the lower end face of the oil smoke purification box, the number of the water supply pipes is one or more, the spray heads on each water supply pipe are provided with a plurality of water supply pipes, and one ends of the water supply pipes, which are far away from the water inlet pipeline, are sealed.

In the smoke hood machine with the fireproof and heat insulation functions, the number of the water supply pipes is two or more, the water pump is connected between the water supply pipes and the water inlet pipeline, the shunt pipes are connected between the water supply pipes and the water pump, and the shunt pipes and the water pump are fixed on the lower end face of the oil smoke purification box.

In the smoke hood machine with the fireproof heat insulation function, a gap is reserved between at least one edge of the water receiving basin and the inner wall of the smoke hood, the gap forms the air inlet channel, the water receiving basin is fixedly provided with a connecting plate on one side edge of the air inlet channel, and the other end of the connecting plate is fixedly connected with the inner wall surface of the smoke hood.

In the smoke hood machine with the fireproof and heat insulation functions, the overlook projection of the aeration net is arranged in the overlook projection of the water receiving basin.

In the smoke hood machine with the fireproof and heat insulation functions, an access hole is formed in front of the smoke purification box, an access door is connected to the access hole, an electric cabinet is installed on the front side of the access door, a water pump is connected with the electric cabinet through wires, and a timer for controlling the water pump to be started is arranged in the electric cabinet.

In the smoke hood machine with the fireproof and heat insulation functions, the water-stop plate is fixed on the through hole.

In the smoke hood machine with the fireproof and heat insulation functions, the oil fume purification box is horizontal, the through hole is formed in the bottom of one end of the oil fume purification box, guide rails are arranged on the upper end face and the lower end face of the oil fume purification box between the through hole and the air outlet, the purification unit is fixed on the guide rails, and the oil passing through hole is formed in the guide rails arranged on the lower end face of the oil fume purification box.

In the smoke hood machine with the fireproof and heat insulation functions, the oil smoke purifying box is vertical, the through hole is formed in the bottom, the air outlet is formed in the top, the guide rail is arranged on the inner wall surface of the oil smoke purifying box between the through hole and the air outlet, and the purifying unit is fixed on the guide rail.

In the smoke hood machine with the fireproof and heat insulation functions, the purification unit comprises an ultraviolet lamp tube and an electrostatic purification electric field, and the electrostatic purification electric field is one or two combinations of a honeycomb purification electric field and a plate purification electric field.

Has the advantages that: 1. a water supply pipe, an aeration net and a water receiving basin are arranged from top to bottom in the smoke hood below the oil smoke purifying box, a spray head is arranged on the water supply pipe, one end of the water supply pipe is connected with a water pump, and a gap through which smoke passes is reserved between the water receiving basin and the inner wall of the smoke hood to form an air inlet channel. When the device is used, water is sprayed onto the aeration net from the spray head through the water supply pipe, and under the influence of negative pressure of the fan, the water cannot immediately drop on the water receiving basin, but a layer of water vapor bubble film is formed on the upper surface of the aeration net, the water vapor bubble film plays a role in blocking oil stains, peculiar smell and the like, and plays a role in blocking flames and hot air;

2. because the smoke is a mixed gas containing a plurality of substance components, part of the gas is soluble in water, such as chlorine which forms the main component of odor, and the like, and when passing through the water vapor bubble film, the gas is contacted with water and dissolved in the water, and is carried away by the water, so that the gas purification effect is achieved.

Drawings

Fig. 1 is an explosion diagram of a smoke hood machine with fireproof and heat insulation functions provided by the utility model.

Fig. 2 is an exploded view of the hood machine with fireproof and heat insulation functions provided by the utility model in another direction.

Fig. 3 is a left side view of a smoke hood machine with a fire-proof and heat-insulation function provided by the first embodiment.

Fig. 4 is a cross-sectional view of fig. 3 in the direction a-a, the direction indicated by the arrows being the direction of flow of the flue gas.

Fig. 5 is a plan view of fig. 4, in which the top surface of the lampblack purification box is removed.

Fig. 6 is a left side view of the hood machine with the fireproof and heat insulation functions provided by the second embodiment.

Fig. 7 is a cross-sectional view of fig. 6 in the direction B-B, the direction indicated by the arrows being the direction of flow of the flue gas.

Description of the main element symbols: 1-lampblack purification box, 11-access door, 12-guide rail, 13-electric control box, 14-oil through hole, 15-purification unit, 151-electrostatic purification electric field, 152-ultraviolet lamp tube, 16-air outlet, 17-through hole, 2-smoke hood, 21-air inlet, 3-water receiving basin, 31-water outlet, 32-connecting plate, 4-aeration net, 51-water supply pipe, 52-spray head, 54-water pump, 53-shunt pipe and 6-fan.

Detailed Description

The utility model provides a petticoat pipe for having fire prevention function that insulates against heat, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and it is right that the following refers to the drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

Referring to fig. 1, 2, 3, 4, 5, 6 and 7, a hood machine with fireproof and heat insulation functions comprises a hood 2 and a fume purifying box 1 arranged on the top of the hood 2, wherein one end of the fume purifying box 1 is provided with a through hole 17 communicated with the hood 2, the other end of the fume purifying box is provided with an air outlet 16, and a purifying unit 15 and a fan 6 are sequentially arranged between the through hole 17 and the air outlet 16; the air outlet of the fan 6 is connected with the air outlet 16; when making fan 6 rotate, form the negative pressure in petticoat pipe 2 and the oil smoke purifying box 1, and then drive the flue gas of petticoat pipe 2 below from having the inside process of the petticoat pipe 2 machine that prevents fires thermal-insulated function, realize the purification of oil smoke purifying box 1 to the flue gas.

Referring to fig. 2, in a preferred embodiment, the cross section of the upper end edge of the smoke hood 2 is in an L shape, the oil smoke purifying box 1 is buckled on the belly of the L shape, and the upper end of the smoke hood 2 is in a quadrilateral shape, so that the oil smoke purifying box 1 is buckled behind the belly of the L shape, the lower end edge of the oil smoke purifying box 1 is attached to the upper end edge of the smoke hood 2, the lower end surface is abutted against the smoke hood 2, and the oil smoke purifying box is further detachably fixed through screws, so that the oil smoke purifying box is convenient to disassemble and assemble.

Referring to fig. 1, the lower end of the smoke hood 2 is an air inlet 21, a water receiving basin 3 is laid on the air inlet 21, a water outlet 31 is arranged at the bottom of the water receiving basin 3, an aeration net 4 is arranged above the water receiving basin 3, the water receiving basin 3 and the aeration net 4 are fixed on the inner wall of the smoke hood 2, and an air inlet channel is arranged between the edge of the water receiving basin 3 and the inner wall of the smoke hood 2. Wherein, leave the clearance between at least one border of water collector 3 and the inner wall of petticoat pipe 2, this clearance forms inlet channel (corresponding to the position of connecting plate 32 in the picture), water collector 3 is fixed with connecting plate 32 on inlet channel one side, the other end of connecting plate 32 and the internal wall fixed connection of petticoat pipe 2. Preferably, a gap is reserved between the four sides or three sides of the water receiving basin 3 and the inner wall of the smoke hood 2, so that the smoke can completely and rapidly enter the smoke hood 2 from the air inlet channel. In this embodiment, when a gap is left between the periphery of the water receiving basin 3 and the inner wall of the smoke hood 2, preferably, the inner wall of the back of the smoke hood 2 is directly and fixedly connected with the water receiving basin 3.

An aeration net 4 is arranged above the water receiving basin 3, the edge of the aeration net 4 is fixed with the inner wall of the smoke hood 2 in a sealing way, and fine vent holes through which gas and water can pass are distributed in the middle of the aeration net 4, so that smoke can pass through the aeration net 4 and enter the smoke purifying box 1 above.

A water supply pipe 51 is arranged above the aeration net 4, the water supply pipe 51 is fixed on the lower end surface of the lampblack purification box 1, a spray head 52 is fixed on the water supply pipe 51, the water spraying direction of the spray head 52 faces the upper surface of the aeration net 4, one end of the water supply pipe 51 is connected with a water pump 54, the water pump 54 is connected with a water inlet pipeline, the water inlet pipeline is connected with a water source, and the water source can be a water tank or tap water. When the water inlet pipeline is connected with a water source with certain pressure like tap water, the water pump can be omitted, or the water pump is replaced by the control valve.

In the foregoing, when using, start fan 6, at the inside negative pressure that forms of petticoat pipe 2, make the flue gas get into inside the petticoat pipe 2, and then start water pump 54, make water spout aeration net 4 from shower nozzle 52 through delivery pipe 51 on, because the air vent on the aeration net 4 is tiny, and by the influence of fan 6 negative pressure, therefore, water can not drip on water collector 3 at once, but the surface distribution forms one deck vapor bubble membrane on aeration net 4, this vapor bubble membrane plays the separation greasy dirt, peculiar smell etc., play preliminary purification's effect, and the vapor bubble membrane can play the effect of separation flame and steam. When the smoke passes through the steam bubble film, as the smoke is mixed gas containing a plurality of substance components, part of the gas is soluble in water, such as chlorine and the like which form the main components of odor, and when the smoke passes through the steam bubble film, the gas is contacted with water and dissolved in the water and is carried away by the water; and like the material of greasy dirt, when passing through the vapor bubble membrane, the vapor bubble membrane plays and blocks the effect for part of material such as greasy dirt is separated the shelves, realizes preliminary purification, and the material such as the greasy dirt that is not purified by the vapor bubble membrane gets into in oil smoke purifying box 1 to carry out secondary purification in oil smoke purifying box 1, reach better purifying effect.

In practical application, the water amount sprayed by the spray nozzle 52 can be adjusted by the water pump 54 or the control valve, and corresponding data of the tension of the water vapor bubble film, different negative pressures formed by the fan 6 on the smoke hood 2 and the balance amount of the force of breaking the water vapor bubble film when smoke passes through are detected. When in use, the data of the smoke extracted by the fan 6 is fed back to the water pump 54, and the water pump 54 is controlled to adjust the water amount sprayed by the spray head 52 according to the corresponding data, so that the better purification effect can be achieved when in use.

Of course, when in use, water can be sprayed on the aeration net 4 at first, the water flows under the characteristic of fluid, a water vapor bubble film is formed on the surface of the aeration net 4, and then the fan is started to enable smoke to pass through the aeration net 4 under the action of negative pressure formed by the fan.

In a preferred embodiment, the water pump or the control valve is connected with a timer for controlling the timing start of the water pump or the control valve to replenish the water quantity to the aeration net 4, and the timer is arranged on the electric cabinet. When the tension of the water vapor bubble film, the negative pressure formed by the fan 6 on the smoke hood 2 and the force of the smoke passing through and breaking the water vapor bubble film reach the balance amount, the water loss amount of the formed water vapor bubble film is less, therefore, the aeration net 4 is supplemented with water at regular time without continuous water supply.

In the foregoing, after the outlet 31 of the water receiving basin 3 is discharged, the clean water can be reused for the purification of the hood 2 machine with the fireproof and heat insulation functions after being filtered by the filtering device, and the clean water after being filtered is connected to the water tank or the water inlet pipeline.

Specifically, the overlook projection area of the aeration net 4 is arranged in the overlook projection area of the water receiving basin 3. In other words, the projections of the positions of the through holes 17 on the aeration net 4 are all inside the water receiving basin 3, that is, all water passing through the through holes 17 falls into the water receiving basin 3, so that the water is prevented from dripping from the side of the water receiving basin 3 and dripping from the air inlet 21 onto materials such as a cooking bench, and the work of a user is prevented from being influenced. Wherein, the aeration net 4 is in a net bag shape, the side wall of the aeration net is fixed with the inner side wall of the smoke cover 2, and the aeration net is arranged on the bottom surface in the net bag shape. In this way, it is ensured that the water drips vertically, rather than in a parabolic manner. And the side wall of the aeration net 4 has a certain height, so that a water vapor bubble film with a certain thickness can be formed, water cannot submerge to the connecting position of the inner side wall of the aeration net 4 and the smoke hood 2, and leakage cannot be generated when the water is not in sealing connection.

In a preferred embodiment, the number of the water supply pipes 51 is one or more, the spray heads 52 on each water supply pipe 51 are provided in a plurality, and the water supply pipes 51 are sealed at the end far from the water pump 54. Preferably, the area covered by the water sprayed by the spray head 52 is larger than or equal to the area of the position of the aeration holes of the aeration net 4, so that the water sprayed by the spray head 52 can quickly form a water vapor bubble film on the aeration net 4.

In the above embodiment, when the number of the water supply pipes 51 is two or more, a bypass pipe 53 is connected between the water supply pipe 51 and the water pump 54, and the bypass pipe 53 is used to bypass the water output from the water pump 54 to the water supply pipes 51. Wherein, the shunt pipe 53 and the water pump 54 are both fixed on the lower end surface of the lampblack purification box 1.

Specifically, in order to facilitate installation and maintenance of the electrostatic purification electric field 151, an access hole is formed in front of the oil fume purification box 1, an access door 11 is connected to the access hole, and an electric cabinet 13 is installed on the front face of the access door 11. The water pump 54 is connected with the electric control box 13 through electric wires. The installation mode is the same as the installation mode of the access door 11 of the existing hood 2 machine with the fireproof and heat insulation functions, and the installation mode is not described in detail herein.

The first embodiment is as follows: referring to fig. 1 to 5, the lampblack purification box 1 is horizontal, a through hole is formed in the bottom of one end of the lampblack purification box, guide rails 12 are arranged on the upper end face and the lower end face of the lampblack purification box 1 between the through hole 17 and the air outlet 16, and the purification unit 15 is fixed on the guide rails 12. When purifying unit 15 installation, purifying unit 15's the corresponding guide rail 12 position in four corners, will purify unit 15 and advance and reach the mounted position along guide rail 12 from access hole department, and then fix, consequently can remove just like the drawer when purifying unit 15 installation, make things convenient for purifying unit 15's dismouting, and then make things convenient for purifying unit 15's maintenance, clearance. The guide rail 12 arranged on the lower end face of the oil fume purification box 1 is provided with an oil through hole 14, and the oil through hole 14 is used for discharging oil stains collected by the oil fume purification box 1.

Example two: referring to fig. 6 and 7, the oil fume purification box 1 is vertical, the through hole 17 is arranged at the bottom, the air outlet 16 is arranged at the top, the guide rail 12 is arranged on the inner wall surface of the oil fume purification box 1 between the through hole 17 and the air outlet 16, and the purification unit 15 is fixed on the guide rail. In this embodiment, the number of the oil smoke purification boxes can be one, two or more (two are taken as an example in the figure), and the internal purification units and the through holes are also arranged corresponding to the number of the oil smoke purification boxes.

In the first and second embodiments, the air outlet may be disposed at a position of the exhaust duct actually connected to the lampblack purification box, that is, at the top, the back, or other side surfaces.

In the above embodiment, the number and the position of the aeration nets 4 may correspond to the through holes 17, that is, the aeration nets 4 may be installed by fixing an installation plate on the inner wall of the smoke hood 2, providing holes for installing the aeration nets 4 on the installation plate, placing the aeration nets 4 in the holes, and fixing by screws and other structures.

In practical application, the air inlet 21 border of petticoat pipe 2 will set up the hem and form the recess usually, and the lower terminal surface of water collector 3 is the inclined plane for the greasy dirt of lower terminal surface accumulation at water collector 3 can drip in this recess, collects, and sets up the oil drain port on the recess. In order to simplify the connection of the pipelines, the oil through holes 14 can be directly connected to the grooves through the pipelines, so that the oil dirt is collected at the grooves and then uniformly discharged.

In a preferred embodiment, the purification unit 15 includes an ultraviolet lamp 152 and an electrostatic purification electric field 151, and the electrostatic purification electric field 151 is preferably one or a combination of a honeycomb purification electric field and a plate purification electric field. The lampblack purification box 1 is provided with guide rails 12 between the through holes 17 and the air outlet 16, and the purification unit 15 is fixed on the guide rails 12, that is, the ultraviolet lamp 152 and the electrostatic purification electric field 151 are respectively fixed on the corresponding guide rails 12. Oil smoke purifying box 1 lower terminal surface is equipped with oil through hole 14 for the greasy dirt that electrostatic purification electric field 151 collected can be in the same place through oil through hole 14 is concentrated, and then collects through the profit of first oil-out and collection of petticoat pipe 2, concentrates the discharge at last.

In the above, the fixing connection may be welding, screw connection, or the like.

Preferably, a water-stop plate (not shown in the figure) is fixed on the through hole, the water-stop plate is provided with a hole for air to pass through, and the water-stop plate is used for preventing excessive moisture from entering the inside of the oil fume purification box.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.

Claims (10)

1. A smoke hood machine with fireproof and heat insulation functions comprises a smoke hood and an oil smoke purification box arranged at the top of the smoke hood, and is characterized in that the oil smoke purification box is provided with a through hole communicated with the smoke hood, one end of the oil smoke purification box far away from the through hole is provided with an air outlet, and a purification unit and a fan are sequentially arranged between the through hole and the air outlet; the gas hood lower extreme is the air inlet, and the air inlet upper berth is equipped with the water receiving basin, and the bottom of water receiving basin is equipped with the outlet, and water receiving basin top is provided with the aeration net, and water receiving basin and aeration net are fixed on the inner wall of gas hood, and are equipped with inlet channel between the border of water receiving basin and the inner wall of gas hood, and aeration net top is provided with the delivery pipe, is fixed with the shower nozzle on the delivery pipe, and the water spray direction of shower nozzle is towards the upper surface of aeration net, and delivery pipe one end is connected with the.

2. The hood machine with fireproof and heat insulation functions according to claim 1, wherein one or more water supply pipes are fixed on the lower end face of the lampblack purification box, a plurality of spray heads are arranged on each water supply pipe, and the water supply pipes are closed at one ends far away from the water inlet pipelines.

3. The hood machine with fireproof and heat insulation functions according to claim 2, wherein the number of the water supply pipes is two or more, a water pump is connected between the water supply pipes and the water inlet pipeline, a shunt pipe is connected between the water supply pipes and the water pump, and the shunt pipe and the water pump are both fixed on the lower end face of the lampblack purification box.

4. The hood machine with the fireproof and heat insulation functions according to claim 3, wherein a gap is reserved between at least one edge of the water receiving basin and the inner wall of the hood, the gap forms the air inlet channel, the water receiving basin is fixedly provided with a connecting plate on one side edge of the air inlet channel, and the other end of the connecting plate is fixedly connected with the inner wall surface of the hood.

5. The hood machine with fireproof and heat insulation functions according to claim 4, wherein a top view projection of the aeration net is placed in a top view projection of the water receiving basin.

6. The smoke hood machine with the functions of fire prevention and heat insulation according to claim 5, wherein an access hole is formed in the front of the smoke purification box, an access door is connected to the access hole, an electric cabinet is installed on the front face of the access door, the water pump is connected with the electric cabinet through an electric wire, and a timer for controlling the start of the water pump in a timing mode is arranged in the electric cabinet.

7. The hood machine with fireproof and heat insulation functions according to claim 6, wherein a water-stop sheet is fixed on the through hole.

8. The hood machine with fireproof and heat-insulating functions according to claim 7, wherein the oil fume purification box is horizontal, the through hole is formed in the bottom of one end of the oil fume purification box, guide rails are arranged on the upper end face and the lower end face of the oil fume purification box between the through hole and the air outlet, the purification unit is fixed on the guide rails, and the oil through hole is formed in the guide rail arranged on the lower end face of the oil fume purification box.

9. The hood machine with fireproof and heat insulation functions according to claim 7, wherein the oil fume purification box is vertical, the through hole is formed in the bottom, the air outlet is formed in the top, a guide rail is arranged on the inner wall surface of the oil fume purification box between the through hole and the air outlet, and the purification unit is fixed on the guide rail.

10. A hood machine with fireproof and heat insulation functions according to claim 8 or 9, wherein the purifying unit comprises an ultraviolet lamp tube and an electrostatic purifying electric field, and the electrostatic purifying electric field is one or two combination of a honeycomb purifying electric field and a plate purifying electric field.

Images