Smoking room

Abstract

The utility model discloses a smoking room and belongs to the technical field of air purification. The smoking chamber comprises a cabin and a purification table, a first air inlet duct is arranged at the top of the cabin, and a smoke outlet is formed in the top face of the cabin. The purification table is arranged in the cabin body, and a flue gas inlet is formed in the side edge of the top of a purification table body; the second air inlet duct is arranged in the machine body and is communicated with the flue gas inlet; the air outlet duct is arranged in the machine body and communicates with the first air inlet duct and the smoke air outlet. A filtering layer is arranged in the filtering channel, the filtering channel is communicated with the air inlet channel and the air outlet channel, and the sectional area of the filtering channel is larger than that of the air inlet channel and that of the air outlet channel; the centrifugal fan is arranged in the machine body and located behind the filtering layer, and after the centrifugal fan sucks smoke into the first air inlet channel and the filtering channel from the smoke inlet, the purified smoke is discharged to the first air inlet channel and the smoke outlet from the air outlet channel.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, and particularly relates to a smoking room. Background Art

[0002] Second-hand smoke is the most widespread and serious indoor air pollutant in indoor air. Second-hand smoke refers to the passive inhalation of tobacco smoke floating in indoor air, which is a form of involuntary "smoking". This tobacco smoke is mostly generated from indoor smoking and further releases harmful substances as the tobacco burns. These harmful substances exist in the indoor air and are inhaled into the human lung tissue together with the air, which will cause certain harm to the body tissues. Only a small part of the combustion of tobacco smoke is inhaled into the smoker's body as first-hand smoke, and the vast majority is directly discharged into the indoor air as second-hand smoke. Due to the high requirements for airtightness in modern buildings, these pollutants floating in the indoor air, even in a relatively large space, cannot be completely dissipated in a short time because the air cannot circulate. These undissipated second-hand smokes will cause damage to the human body. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a smoking room, which can purify the second-hand smoke in the indoor air, purify the air and protect human health.

[0004] The smoking room according to the embodiment of the utility model includes a cabin body and a purification table. A first air inlet duct is arranged at the top of the cabin body, and a flue gas outlet is arranged on the top surface. One end of the first air inlet duct is communicated with the inside of the cabin body, and the other end is communicated with the flue gas outlet. The purification table is arranged in the cabin body and includes a body, a second air inlet duct, an air outlet duct, a filtering channel and a centrifugal fan. A flue gas inlet is opened at the side of the top of the body. The second air inlet duct is arranged inside the body and is communicated with the flue gas inlet. The air outlet duct is arranged inside the body and is communicated with the first air inlet duct and the flue gas outlet. A filtering layer is arranged in the filtering channel, and the filtering channel is communicated with the second air inlet duct and the air outlet duct, and the cross-sectional area of the filtering channel is larger than that of the second air inlet duct and the air outlet duct. The centrifugal fan is arranged inside the body, behind the filtering layer. The centrifugal fan sucks the flue gas from the flue gas inlet into the second air inlet duct and the filtering channel, and then discharges the purified flue gas from the air outlet duct to the first air inlet duct and the flue gas outlet.

[0005] According to the smoking room of the embodiment of the present utility model, by such setting, at least the following beneficial effects can be achieved: a good air inlet and outlet mode. By arranging a flue gas inlet on the side of the top of the machine body and a flue gas outlet on the top surface, the air inlet is from the upper side of the front part and the air supply is from the top. The air inlet from the upper side of the front part takes into account the smoking behavior of the smoking group around the purification table and the principle that the released flue gas flows upward naturally, which is beneficial to the rapid entry of the flue gas into the purification air duct. The air flow sent by the top air supply structure will not form a turbulent flow on the low-section flue gas on the one hand, and can construct a large-circulation air flow structure on the other hand. The design that the cross-sectional area of the filtering channel is larger than that of the air inlet duct and the air outlet duct, that is, the duct structure is small at both ends and large in the middle, makes the cross-section of the middle filtering channel large, thereby reducing the wind speed of the flue gas in the filtering channel and enabling the filtering layer to fully contact the flowing flue gas, and further obtaining a better single purification effect. At the same time, the purified flue gas enters the air outlet duct, a part of which is discharged from the flue gas outlet to the outside of the smoking room, and the other part flows back into the cabin from the first air inlet duct to form a push-pull air flow, which promotes the flue gas in the cabin to accelerate and enter the second air inlet duct and the filtering channel through the flue gas inlet for filtering.

[0006] According to some embodiments of the present utility model, one end of the first air inlet duct connected to the inside of the cabin and the purification table are respectively arranged opposite to each other on both sides of the cabin, so that the outlet of the first air inlet duct faces the purification table.

[0007] According to some embodiments of the present utility model, it further includes a glass door, the glass door and the purification table are respectively arranged on both sides of the cabin, and the glass door is arranged below the outlet of the first air inlet duct.

[0008] According to some embodiments of the present utility model, a smoking tabletop is arranged in the middle of the machine body, an ashtray is embedded on the smoking tabletop, a cigarette bucket is arranged below the smoking tabletop, and a through hole communicating with the cigarette bucket is arranged at the bottom of the ashtray.

[0009] According to some embodiments of the present utility model, a slide rail is arranged at the bottom of the smoking tabletop in the direction of the side of the machine body, and the cigarette bucket is slidably connected with the slide rail, and the cigarette bucket is pushed into or pulled out of the machine body through the slide rail.

[0010] According to some embodiments of the present utility model, it further includes a ventilation hose, and the ventilation hose is communicated with the cigarette bucket and the second air inlet duct.

[0011] According to some embodiments of the present utility model, the filtering layer is provided with a pre-filter layer, a high-voltage electrostatic filtering layer, a fiberglass filter paper filtering layer, a physical adsorption layer, a chemical adsorption layer and a gas phase oxidation layer along the air inlet direction.

[0012] According to some embodiments of the utility model, the pre-filter layer includes a metal grid mesh, and polyester fiber cotton is arranged in the metal grid mesh; the high-voltage electrostatic filter layer includes a cathode wire and an aluminum plate, the cathode wire is evenly arranged in the first section of the high-voltage electrostatic filter layer, and high voltage discharge is performed through the cathode wire. The aluminum plate is arranged in the second section of the high-voltage electrostatic filter layer, and the aluminum plate includes a cross-arranged high-voltage aluminum plate and a grounded aluminum plate; the frame of the glass fiber filter paper filter layer is made of aluminum profiles, and the joint between the frame and the glass fiber filter paper is sealed by hot melt glue filling, and the physical adsorption layer uses coal columnar carbon for adsorption; the gas phase oxidation layer is potassium permanganate loaded on activated alumina.

[0013] According to some embodiments of the utility model, the inner wall of the second air inlet duct and / or the air outlet duct is provided with sound-absorbing and noise-reducing cotton, and a smoke sensor is provided in the duct.

[0014] According to some embodiments of the present utility model, an infrared human sensor is also provided.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a front view of a smoking room according to an embodiment of the utility model;

[0018] Figure 2 is a side view of a smoking room according to an embodiment of the utility model;

[0019] Figure 3 is a cross-sectional view of a smoking room according to an embodiment of the utility model;

[0020] Figure 4 is a cross-sectional view of a clean bench in a smoking room according to an embodiment of the utility model;

[0021] Figure 5 is a top view of a smoking room according to an embodiment of the utility model;

[0022] Figure 6 is a bottom view of a smoking room according to an embodiment of the utility model;

[0023] Reference numerals:

[0024] The body 100, the second air inlet duct 110, the air outlet duct 120, the filtration channel 130, the pre-filter layer 131, the high-voltage electrostatic filtration layer 132, the fiberglass filter paper filtration layer 133, the physical adsorption layer 134, the chemical adsorption layer 135, the gas-phase oxidation layer 136, the reticular structure 140, the centrifugal fan 200, the smoking tabletop 300, the ashtray 310, the ashtray barrel 320, the slide rail 330, the smoke sensor 400, the infrared human sensor 500, the LED lamp 600, the cabin 700, the first air inlet duct 710, the glass door 720, the support feet 730, the rubber soft pads 740. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0029] The following will be described with reference to Figures 1 to 6 the smoking room according to the embodiments of the present utility model.

[0030] According to the smoking room of the embodiment of the present utility model, it includes a cabin body 700 and a purification table. A first air inlet duct 710 is provided at the top of the cabin body 700, and a flue gas outlet is provided on the top surface. One end of the first air inlet duct 710 is connected to the inside of the cabin body 700, and the other end is connected to the flue gas outlet; the purification table is arranged inside the cabin body 700, and the purification table includes a body 100, a second air inlet duct 110, an air outlet duct 120, a filtering channel 130, and a centrifugal fan 200. A flue gas inlet is opened at the top side of the body 100; the second air inlet duct 110 is arranged inside the body 100 and is connected to the flue gas inlet; the air outlet duct 120 is arranged inside the body 100 and is connected to the first air inlet duct 710 and the flue gas outlet; a filtering layer is arranged inside the filtering channel 130, the filtering channel 130 is connected to the air inlet duct and the air outlet duct 120, and the cross-sectional area of the filtering channel 130 is larger than the cross-sectional areas of the air inlet duct and the air outlet duct 120; the centrifugal fan 200 is arranged inside the body 100 and is located behind the filtering layer. The centrifugal fan 200 sucks the flue gas from the flue gas inlet into the first air inlet duct 710 and the filtering channel 130, and then discharges the purified flue gas from the air outlet duct 120 to the first air inlet duct 710 and the flue gas outlet.

[0031] For example Figures 1 to 4 As shown, according to the smoking room of the embodiment of the present utility model, by setting like this, at least the following beneficial effects can be obtained: a good air inlet and outlet mode. By arranging the flue gas inlet at the top side of the body 100 and the flue gas outlet on the top surface, the air inlet is from the upper front part and the air is sent from the top. The air inlet from the upper front part takes into account the smoking behavior of the smoking group around the purification table and the principle that the flue gas is released and flows upward naturally, which is beneficial to the rapid entry of the flue gas into the purification air duct. The air flow sent by the top air supply structure will not form a turbulent flow for the low-section flue gas on the one hand, and on the other hand, it can construct a large-circulation air flow structure. The design that the cross-sectional area of the filtering channel 130 is larger than the cross-sectional areas of the air inlet duct and the air outlet duct 120, that is, the air duct structure is small at both ends and large in the middle, makes the cross-section of the middle filtering channel 130 large, thereby reducing the wind speed of the flue gas in the filtering channel 130 and enabling the filtering layer to fully contact the flowing flue gas, and further obtaining a better single purification effect. At the same time, the purified flue gas enters the air outlet duct 120. Part of it is discharged from the flue gas outlet to the outside of the smoking room, and the other part flows back into the cabin body 700 from the first air inlet duct 710, forming a push-pull air flow, which promotes the flue gas in the cabin body 700 to accelerate and enter the second air inlet duct 110 and the filtering channel 130 for filtering from the flue gas inlet.

[0032] In some specific embodiments of the present utility model, one end of the first air inlet duct 710 connected to the inside of the cabin body 700 and the purification table are arranged opposite to each other on both sides of the cabin body 700, so that the outlet of the first air inlet duct 710 faces the purification table.

[0033] For example Figure 3 As shown, one end of the first air inlet duct 710 connected to the interior of the cabin 700 and the purification table are respectively arranged opposite to each other on both sides of the cabin 700, so that the outlet of the first air inlet duct 710 faces the purification table. Thus, after the purified flue gas enters the first air inlet duct 710 from the air outlet duct 120, the air coming out can be blown from the outlet of the first air inlet duct 710 towards the air inlet of the second air inlet duct 110, thereby forming a push-pull air flow, which can accelerate the flow of unfiltered flue gas towards the second air inlet duct 110 and the filtration channel 130 for filtration.

[0034] At the same time, due to the suction of the centrifugal fan 200, the interior of the cabin 700 is always in a negative pressure state, resulting in no overflow of the flue gas in the cabin 700. Most of the filtered flue gas flows out of the flue gas outlet of the air outlet duct 120 into the outdoor atmosphere, and a small part re-enters the interior of the cabin 700 from the first air inlet duct 710 to form a push-pull air flow.

[0035] Furthermore, smoke inlet openings are provided on the top three sides of the body 100 of the purification table. Considering the behavior of smokers surrounding the purification table to smoke, smoke inlet openings are provided on the three sides of the top, which can suck in the flue gas from the smoke inlet openings to the maximum extent, so as to purify the flue gas.

[0036] Furthermore, a mesh structure body 140 is covered and arranged at both the smoke inlet opening and the smoke outlet opening. The mesh structure body 140 arranged at the smoke inlet opening can evenly distribute the incoming smoke air flow. The mesh structure body 140 arranged at the smoke outlet opening can, on the one hand, prevent falling objects from the top, and on the other hand, has the effects of evenly distributing the air flow and reducing noise.

[0037] In some specific embodiments of the present utility model, a glass door 720 is further included. The glass door 720 and the purification table are respectively arranged on both sides of the cabin 700, and the glass door 720 is arranged below the outlet of the first air inlet duct 710.

[0038] For example Figures 1 to 3 As shown, the glass door 720 and the purification table are respectively arranged on both sides of the cabin 700, and the glass door 720 is arranged below the outlet of the first air inlet duct 710. The air outlet direction of the first air inlet duct 710 is arranged to be inclined downward, facing the direction of the smoke inlet opening of the purification table, which is conducive to forming a push-pull air flow.

[0039] In some specific embodiments of the present utility model, a smoking table surface 300 is arranged in the middle of the body 100. An ashtray 310 is embedded on the smoking table surface 300, a cigarette bucket 320 is arranged below the smoking table surface 300, and a through hole communicating with the cigarette bucket 320 is arranged at the bottom of the ashtray 310.

[0040] For exampleFigure 4 As shown, a smoking tabletop 300 is provided in the middle of the body 100. Two ashtrays 310 are embedded in the smoking tabletop 300, which can be used by smokers to flick cigarette ash. After smoking, the cigarette butts can be thrown into the ashtrays 310 to prevent pollution of the external environment. A cigarette bucket 320 is provided below the smoking tabletop 300. A through hole communicating with the cigarette bucket 320 is provided at the bottom of the ashtray 310, so that the cigarette ash and cigarette butts can fall into the cigarette bucket 320 through this through hole, facilitating the collection of cigarette ash and cigarette butts in the cigarette bucket 320, and it can be cleaned regularly.

[0041] In some specific embodiments of the present invention, a slide rail 330 is provided at the bottom of the smoking tabletop 300 in the direction towards the side of the body 100. The cigarette bucket 320 is slidably connected to the slide rail 330, and the cigarette bucket 320 is pushed into or pulled out of the body 100 through the slide rail 330.

[0042] For example Figure 4 As shown, a slide rail 330 is provided at the bottom of the smoking tabletop 300 in the direction towards the side of the body 100. The cigarette bucket 320 is slidably connected to the slide rail 330, and the cigarette bucket 320 can be pushed into or pulled out of the body 100 through the slide rail 330, so as to clean the cigarette ash and cigarette butts in the cigarette bucket 320.

[0043] In some specific embodiments of the present invention, a ventilation hose is further included. The ventilation hose communicates with the cigarette bucket 320 and the second air inlet duct 110.

[0044] For example Figure 4 As shown, by using the ventilation hose to communicate the cigarette bucket 320 and the second air inlet duct 110, the centrifugal fan 200 can continuously draw the air in the cigarette bucket 320 into the second air inlet duct 110, so that the air in the cigarette bucket 320 becomes thin, so that the unburned cigarette butts thrown in will automatically go out after a certain time, thus reducing the risk of fire. The setting of the ventilation hose can also prevent the smell emitted by the cigarette butts inside the cigarette bucket 320 from overflowing.

[0045] In some specific embodiments of the present invention, the filter layer is provided with a pre-filter layer 131, a high-voltage electrostatic filter layer 132, a fiberglass filter paper filter layer 133, a physical adsorption layer 134, a chemical adsorption layer 135 and a gas phase oxidation layer 136 along the air inlet direction.

[0046] For example Figure 4 As shown, the filter layer is provided with a pre-filter layer 131, a high-voltage electrostatic filter layer 132, a fiberglass filter paper filter layer 133, a physical adsorption layer 134, a chemical adsorption layer 135 and a gas phase oxidation layer 136 along the air inlet direction, which can filter the flue gas sufficiently and then discharge it, thus minimizing the impact on air quality.

[0047] In some specific embodiments of the present utility model, the pre-filter layer 131 includes a metal grille, and polyester fiber cotton is disposed inside the metal grille; the high-voltage electrostatic filter layer 132 includes a cathode wire and an aluminum plate. The cathode wire is uniformly disposed in the first section of the high-voltage electrostatic filter layer 132, and high-voltage discharge is carried out through the cathode wire. The aluminum plate is disposed in the second section of the high-voltage electrostatic filter layer 132. The aluminum plate includes high-voltage aluminum plates and grounded aluminum plates arranged in a cross pattern; the frame of the fiberglass filter paper layer 133 is made of aluminum profiles, and the joint between the frame and the fiberglass filter paper is sealed by hot melt adhesive potting. The physical adsorption layer 134 uses coal-based columnar carbon for adsorption; the gas-phase oxidation layer 136 is activated alumina loaded with potassium permanganate.

[0048] For example Figure 4 As shown, polyester fiber cotton is disposed inside the metal grille, and the polyester fiber cotton can filter out particulate matter in the air with a diameter of more than 0.5 μm.

[0049] The high-voltage electrostatic filter layer 132 includes a cathode wire and an aluminum plate. The cathode wire is uniformly disposed in the first section of the high-voltage electrostatic filter layer 132, and high-voltage discharge is carried out through the cathode wire. The uniform arrangement of the cathode wire can completely cover the entire flow cross-section of the high-voltage electrostatic filter layer 132 in the discharge area. The aluminum plate is disposed in the second section of the high-voltage electrostatic filter layer 132. The aluminum plate includes high-voltage aluminum plates and grounded aluminum plates arranged in a cross pattern. When the high-voltage aluminum plates and the grounded aluminum plates are arranged in a cross pattern and are energized, a potential difference will be formed. Particulate matter in the air is charged after passing through the first section. When the charged particulate matter passes through the second section along with the air flow, it will deflect upward due to the traction of the Coulomb force. Further, the particulate matter will move in a curved path and land on the aluminum plate. The particulate matter in the air finally landing on the aluminum plate is regarded as being captured. The distance between the cathode wire and the aluminum plate can be obtained through strict calculation.

[0050] Using fiberglass filter paper as the filter material, the filtration efficiency for particles with a particle size of 0.3 μm is as high as 99.95%. The combination of the aluminum profile production and the hot melt adhesive potting to seal the joint between the filter paper and the frame makes the fiberglass filter paper layer 133 have a certain air resistance, and the air resistance will increase after being used for a certain period of time. When the final resistance reaches about 3 times the initial resistance, the fiberglass filter paper can be replaced.

[0051] The physical adsorption layer 134, the chemical adsorption layer 135, and the gas-phase oxidation layer 136 are all for gas adsorption. The physical adsorption layer 134 uses coal-based columnar carbon for adsorption, and reverse desorption can also occur during the adsorption process due to changes in the physical state of the air flow. The physical adsorption layer 134 can adsorb most harmful gases, and no more gas will be adsorbed after the adsorption and desorption processes of the physical adsorption layer 134 reach equilibrium. The chemical adsorption layer 135 is loaded with specific chemical substances on coal-based carbon, and the chemical substances can react with certain specific gases in the air. The gas-phase oxidation layer 136 is loaded with active components such as potassium permanganate on activated bauxite, and the gas-phase oxidation layer 136 can react with harmful reducing gases in the air, and the reaction can remove harmful gases such as hydrogen sulfide, sulfur dioxide, ammonia, and formaldehyde.

[0052] In some specific embodiments of the present invention, the inner walls of the second air inlet duct 110 and / or the air outlet duct 120 are provided with sound-absorbing and noise-reducing cotton, and a smoke sensor 400 is provided in the duct.

[0053] For example Figure 4 As shown, the inner walls of the second air inlet duct 110 and the air outlet duct 120 are provided with sound-absorbing and noise-reducing cotton, which can reduce the noise during the operation of the purification table. And a smoke sensor 400 is provided in the second air inlet duct 110, which can monitor the smoke concentration in the duct in real time, so that when no one is smoking, the purification table can be automatically closed or enter the sleep state. The glass door 720 of the cabin 700 can also be automatically closed.

[0054] In some specific embodiments of the present invention, an infrared human sensor 500 is also provided.

[0055] For example Figure 4 As shown, the smoking room can also be provided with an infrared human sensor 500. When someone is detected near the purification table, the glass door 720 automatically opens for people to enter, and the purification table can also be automatically started. When the infrared human sensor 500 of the purification table detects that the person has left the purification table and there is no one smoking near the purification table, the glass door 720 and the purification table can be automatically closed or enter the sleep state.

[0056] Furthermore, an LED lamp 600 is also provided on the top of the purification table, so that people can also go to the purification table to smoke at night, playing a lighting role.

[0057] Furthermore, the smoking room is also provided with feet 730. For example Figure 6 As shown, the height of the feet 730 can be adjusted, so that the height of the smoking room can be adjusted, and the stability of the smoking room can be increased.

[0058] Furthermore, a rubber soft pad 740 is also provided on the bottom surface of the smoking room to prevent the smoking room from sliding on the bottom surface and increase the stability of the smoking room.

[0059] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0060] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A smoking room, characterized in that: include: A cabin (700), wherein a first air inlet duct (710) is disposed on the top of the cabin (700), and a smoke outlet is disposed on the top surface, wherein one end of the first air inlet duct (710) is connected to the interior of the cabin (700), and the other end is connected to the smoke outlet; A purification station, the purification station is arranged in the cabin (700), the purification station comprises a body (100), a second air inlet duct (110), an air outlet duct (120), a filter channel (130) and a centrifugal fan (200), a smoke inlet opening is provided on the top side of the body (100); the second air inlet duct (110) is arranged inside the body (100) and is connected to the smoke inlet opening; the air outlet duct (120) is arranged inside the body (100) and is connected to the first air inlet duct (710) and the smoke outlet; a filter layer is arranged in the filter channel (130); The filter channel (130) is connected to the second air inlet duct (110) and the air outlet duct (120), and the cross-sectional area of ​​the filter channel (130) is greater than the cross-sectional area of ​​the second air inlet duct (110) and the air outlet duct (120); the centrifugal fan (200) is arranged in the body (100) and is located after the filter layer. After the centrifugal fan (200) sucks the smoke from the smoke inlet into the second air inlet duct (110) and the filter channel (130), the purified smoke is discharged from the air outlet duct (120) to the first air inlet duct (710) and the smoke outlet.

2. The smoking room according to claim 1, characterized in that: One end of the first air inlet duct (710) connected to the interior of the cabin (700) and the clean bench are respectively located on two sides of the cabin (700) and arranged opposite to each other, so that the outlet of the first air inlet duct (710) faces the clean bench.

3. The smoking room according to claim 1, characterized in that: It also includes a glass door (720), wherein the glass door (720) and the clean bench are respectively arranged on both sides of the cabin body (700), and the glass door (720) is arranged below the outlet of the first air inlet duct (710).

4. The smoking room according to claim 1, characterized in that: A smoking table (300) is arranged in the middle of the body (100), an ashtray (310) is embedded on the smoking table (300), a ashtray (320) is arranged below the smoking table (300), and a through hole connected to the ashtray (320) is arranged at the bottom of the ashtray (310).

5. The smoking room according to claim 4, characterized in that: A slide rail (330) is provided at the bottom of the smoking table (300) toward the side of the machine body (100), and the smoke barrel (320) is slidably connected to the slide rail (330), and the smoke barrel (320) is pushed into or pulled out of the machine body (100) through the slide rail (330).

6. The smoking room according to claim 4, characterized in that: It also includes a ventilation hose, which is connected to the smoke barrel (320) and the second air inlet duct (110).

7. The smoking room according to claim 1, characterized in that: The filter layer is provided with a pre-filter layer (131), a high-voltage electrostatic filter layer (132), a glass fiber filter paper filter layer (133), a physical adsorption layer (134), a chemical adsorption layer (135) and a gas phase oxidation layer (136) along the air inlet direction.

8. The smoking room according to claim 7, characterized in that: The pre-filter layer (131) includes a metal grid mesh, and polyester fiber cotton is arranged in the metal grid mesh; the high-voltage electrostatic filter layer (132) includes a cathode wire and an aluminum plate, the cathode wire is evenly arranged in the first section of the high-voltage electrostatic filter layer (132), and high voltage discharge is performed through the cathode wire. The aluminum plate is arranged in the second section of the high-voltage electrostatic filter layer (132), and the aluminum plate includes a cross-arranged high-voltage aluminum plate and a grounding aluminum plate; the frame of the glass fiber filter paper filter layer (133) is made of aluminum profiles, and the joint between the frame and the glass fiber filter paper is sealed by hot melt glue injection. The physical adsorption layer (134) uses coal columnar carbon for adsorption; the gas phase oxidation layer (136) is potassium permanganate loaded on activated alumina.

9. The smoking room according to claim 1, characterized in that: The inner wall of the second air inlet duct (110) and / or the air outlet duct (120) is provided with sound-absorbing and noise-reducing cotton, and a smoke sensor (400) is provided in the duct.

10. The smoking room according to claim 1, characterized in that: An infrared human sensor (500) is also provided.

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